10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

__________________________________

FORM 10-Q

__________________________________

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2024

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number: 001-41862

__________________________________

Hamilton Insurance Group, Ltd.

(Exact name of registrant as specified in its charter)

__________________________________

Bermuda		98-1153847
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)
	Wellesley House North, 1st Floor, 90 Pitts Bay Road Pembroke HM 08 Bermuda
	(Address of Principal Executive Offices and Zip Code)

(441) 405-5200

Registrant's telephone number, including area code

Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Class B common shares, par value $0.01 per share	HG	New York Stock Exchange

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days. ☒ Yes ☐ No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

☒ Yes ☐ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☐	Accelerated filer	☐
Non-accelerated filer	☒	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). ☐ Yes ☒ No

The registrant's number of Class B common shares outstanding as of August 1, 2024 was 61,338,501.

Hamilton Insurance Group, Ltd.

Table of Contents

	Page
Part I. Financial Information
Item 1. Financial Statements	4
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	33
Item 3. Quantitative and Qualitative Disclosures About Market Risk	79
Item 4. Controls and Procedures	79
Part II. Other Information
Item 1. Legal Proceedings	80
Item 1A. Risk Factors	80
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	80
Item 3. Defaults Upon Senior Securities	80
Item 4. Mine Safety Disclosures	80
Item 5. Other Information	80
Item 6. Exhibits	81
Signatures	82

1

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q of Hamilton Insurance Group, Inc. (“Quarterly Report”) includes “forward looking statements” pursuant to the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. Forward-looking statements can be identified by the use of terms such as “believes,” “expects,” “may,” “will,” “target,” “should,” “could,” “would,” “seeks,” “intends,” “plans,” “contemplates,” “estimates,” or “anticipates,” or similar expressions which concern our strategy, plans, projections or intentions. These forward-looking statements appear in a number of places throughout this Quarterly Report and relate to matters such as our industry, growth strategy, goals and expectations concerning our market position, future operations, margins, profitability, capital expenditures, liquidity and capital resources and other financial and operating information. By their nature, forward-looking statements: speak only as of the date they are made; are not statements of historical fact or guarantees of future performance; and are subject to risks, uncertainties, assumptions, or changes in circumstances that are difficult to predict or quantify. Our expectations, beliefs, and projections are expressed in good faith and we believe there is a reasonable basis for them. However, there can be no assurance that management’s expectations, beliefs and projections will be achieved and actual results may vary materially from what is expressed in or indicated by the forward-looking statements.

There are a number of risks, uncertainties, and other important factors that could cause our actual results to differ materially from the forward-looking statements contained in this Quarterly Report. Such risks, uncertainties, and other important factors include, among others, the risks, uncertainties and factors set forth in “Risk Factors” included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 (the “Form 10-K”) and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in this Quarterly Report and the following:

•our results of operations and financial condition could be adversely affected by unpredictable catastrophic events, global climate change or emerging claim and coverage issues;

•our business could be materially adversely affected if we do not accurately assess our underwriting risk, our reserves are inadequate to cover our actual losses, our models or assessments and pricing of risks are incorrect or we lose important broker relationships;

•the insurance and reinsurance business is historically cyclical and the pricing and terms for our products may decline, which would affect our profitability and ability to maintain or grow premiums;

•we have significant foreign operations that expose us to certain additional risks, including foreign currency risks and political risk;

•we do not control the allocations to and/or the performance of the Two Sigma Hamilton Fund, LLC ("TS Hamilton Fund")’s investment portfolio, and its performance depends on the ability of its investment manager, Two Sigma Investments, LP ("Two Sigma"), to select and manage appropriate investments and we have a limited ability to withdraw our capital accounts;

•Two Sigma Principals, LLC, Two Sigma and their respective affiliates have potential conflicts of interest that could adversely affect us;

•the historical performance of Two Sigma is not necessarily indicative of the future results of the TS Hamilton Fund’s investment portfolio or of our future results;

•our ability to manage risks associated with macroeconomic conditions resulting from geopolitical and global economic events, including public health crises, current or anticipated military conflicts, terrorism, sanctions, rising energy prices, inflation and interest rates and other global events;

•our ability to compete successfully with more established competitors and risks relating to consolidation in the reinsurance and insurance industries;

•downgrades, potential downgrades or other negative actions by rating agencies;

•our dependence on key executives, including the potential loss of Bermudian personnel as a result of Bermuda employment restrictions, and the inability to attract qualified personnel, particularly in very competitive hiring conditions;

•our dependence on letter of credit facilities that may not be available on commercially acceptable terms;

•our potential need for additional capital in the future and the potential unavailability of such capital to us on favorable terms or at all;

•the suspension or revocation of our subsidiaries’ insurance licenses;

•risks associated with our investment strategy, including such risks being greater than those faced by competitors;

2

•changes in the regulatory environment and the potential for greater regulatory scrutiny of the Company going forward;

•a cyclical downturn of the reinsurance industry;

•operational failures, failure of information systems or failure to protect the confidentiality of customer information, including by service providers, or losses due to defaults, errors or omissions by third parties or our affiliates;

•we are a holding company with no direct operations, and our insurance and reinsurance subsidiaries’ ability to pay dividends and other distributions to us is restricted by law;

•risks relating to our ability to identify and execute opportunities for growth or our ability to complete transactions as planned or realize the anticipated benefits of our acquisitions or other investments;

•our potentially becoming subject to U.S. federal income taxation, Bermuda taxation or other taxes as a result of a change of tax laws or otherwise;

•the potential characterization of us and/or any of our subsidiaries as a passive foreign investment company, or PFIC;

•our potentially becoming subject to U.S. withholding and information reporting requirements under the U.S. Foreign Account Tax Compliance Act, or FATCA, provisions;

•our costs will increase as a result of operating as a public company, and our management will be required to devote substantial time to complying with public company regulations;

•if we were to identify a material weakness and were unable to remediate such material weakness, or fail to achieve and maintain effective internal controls, our operating results and financial condition could be impacted and the market price of our Class B common shares may be negatively affected;

•the lack of a prior public market for our Class B common shares means our share price may be volatile and anti-takeover provisions contained in our organizational documents could delay management changes;

•the potential that the market price of our Class B common shares could decline due to future sales of shares by our existing shareholders;

•applicable insurance laws, which could make it difficult to effect a change of control of our company; and

•investors may have difficulties in serving process or enforcing judgments against us in the United States.

There may be other factors that could cause our actual results to differ materially from the forward-looking statements, including factors disclosed under the sections entitled “Risk Factors” in the Form 10-K and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in this Quarterly Report. You should evaluate all forward-looking statements made in this Quarterly Report in the context of these risks and uncertainties.

You should read this Quarterly Report completely and with the understanding that actual future results may be materially different from expectations. We caution you that the risks, uncertainties, and other factors referenced above may not contain all of the risks, uncertainties and other factors that are important to you. In addition, we cannot assure you that we will realize the results, benefits, or developments that we expect or anticipate or, even if substantially realized, that they will result in the consequences or affect us or our business in the way expected. All forward-looking statements in this Quarterly Report apply only as of the date of this Quarterly Report and are expressly qualified in their entirety by these cautionary statements. We undertake no obligation to publicly update or revise any forward-looking statements to reflect subsequent events or circumstances.

3

Part I. Financial Information

Item 1. Financial Statements

Index To Unaudited Condensed Consolidated Financial Statements

	Page
Unaudited Condensed Consolidated Balance Sheets	5
Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss)	6
Unaudited Condensed Consolidated Statements of Shareholders’ Equity	7
Unaudited Condensed Consolidated Statements of Cash Flows	8
Notes to the Unaudited Condensed Consolidated Financial Statements
Note 1. Organization	9
Note 2. Summary of Significant Accounting Policies	10
Note 3. Investments	11
Note 4. Fair Value	15
Note 5. Variable Interest Entities	17
Note 6. Reinsurance	18
Note 7. Reserve for Losses and Loss Adjustment Expenses	21
Note 8. Segment Reporting	22
Note 9. Debt and Credit Facilities	27
Note 10. Share Capital	29
Note 11. Earnings Per Share	31
Note 12. Subsequent Events	32

4

Hamilton Insurance Group, Ltd.

Unaudited Condensed Consolidated Balance Sheets

($ in thousands, except share information)	June 30, 2024		December 31, 2023
Assets
Fixed maturity investments, at fair value    (amortized cost 2024: $2,119,739; 2023: $1,867,499)	$	2,068,930	$	1,831,268
Short-term investments, at fair value (amortized cost 2024: $461,525; 2023: $427,437)	463,542		428,878
Investments in Two Sigma Funds, at fair value (cost 2024: $711,236; 2023: $770,191)	923,682		851,470
Total investments	3,456,154		3,111,616
Cash and cash equivalents	1,016,573		794,509
Restricted cash and cash equivalents	98,279		106,351
Premiums receivable	933,211		658,363
Paid losses recoverable	147,690		145,202
Deferred acquisition costs	203,279		156,895
Unpaid losses and loss adjustment expenses recoverable	1,160,309		1,161,077
Receivables for investments sold	12,307		42,419
Prepaid reinsurance	299,574		194,306
Intangible assets	94,410		90,996
Other assets	201,317		209,621
Total assets	$	7,623,103	$	6,671,355
Liabilities, non-controlling interest, and shareholders’ equity
Liabilities
Reserve for losses and loss adjustment expenses	$	3,242,893	$	3,030,037
Unearned premiums	1,202,371		911,222
Reinsurance balances payable	399,633		272,310
Payables for investments purchased	111,280		66,606
Term loan, net of issuance costs	149,887		149,830
Accounts payable and accrued expenses	158,187		186,887
Payables to related parties	43,030		6,480
Total liabilities	5,307,281		4,623,372
Non-controlling interest – TS Hamilton Fund	77,275		133
Shareholders’ equity
Common shares:
Class A, authorized (2024 and 2023: 28,644,807), par value $0.01;    issued and outstanding (2024: 19,520,078 and 2023: 28,644,807)	195		286
Class B, authorized (2024: 72,837,352 and 2023: 72,337,352), par value $0.01;    issued and outstanding (2024: 57,358,464 and 2023: 56,036,067)	574		560
Class C, authorized (2024: 25,044,229 and 2023: 25,544,229), par value $0.01;    issued and outstanding (2024: 25,044,229 and 2023: 25,544,229)	250		255
Additional paid-in capital	1,171,585		1,249,817
Accumulated other comprehensive loss	(4,441)		(4,441)
Retained earnings	1,070,384		801,373
Total shareholders’ equity	2,238,547		2,047,850
Total liabilities, non-controlling interest, and shareholders’ equity	$	7,623,103	$	6,671,355

See accompanying notes to the unaudited condensed consolidated financial statements.

5

Hamilton Insurance Group, Ltd.

Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss)

For the Three and Six Months Ended June 30, 2024 and 2023

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands, except per share information)	2024		2023		2024		2023
Revenues
Gross premiums written	$	603,304	$	504,960	$	1,325,245	$	1,043,124
Reinsurance premiums ceded	(128,236)		(120,252)		(335,297)		(309,918)
Net premiums written	475,068		384,708		989,948		733,206
Net change in unearned premiums	(56,304)		(53,248)		(185,881)		(117,844)
Net premiums earned	418,764		331,460		804,067		615,362
Net realized and unrealized gains (losses) on investments	151,251		19,406		406,622		54,539
Net investment income (loss)	13,720		7,291		26,338		9,650
Total net realized and unrealized gains (losses) on investments and net investment income (loss)	164,971		26,697		432,960		64,189
Other income (loss)	5,989		2,420		13,470		5,452
Net foreign exchange gains (losses)	(1,782)		(3,341)		(3,911)		(5,387)
Total revenues	587,942		357,236		1,246,586		679,616
Expenses
Losses and loss adjustment expenses	214,494		179,416		446,846		327,977
Acquisition costs	96,305		76,856		180,858		141,995
General and administrative expenses	64,917		49,234		119,772		95,040
Amortization of intangible assets	3,317		2,305		6,569		5,075
Interest expense	6,031		5,189		11,738		10,718
Total expenses	385,064		313,000		765,783		580,805
Income (loss) before income tax	202,878		44,236		480,803		98,811
Income tax expense (benefit)	2,496		2,948		3,089		4,521
Net income (loss)	200,382		41,288		477,714		94,290
Net income (loss) attributable to non-controlling interest	69,297		4,501		189,455		6,011
Net income (loss) and other comprehensive income (loss) attributable to common shareholders	$	131,085	$	36,787	$	288,259	$	88,279
Per share data
Basic income (loss) per share attributable to common shareholders	$	1.24	$	0.35	$	2.66	$	0.85
Diluted income (loss) per share attributable to common shareholders	$	1.20	$	0.35	$	2.57	$	0.84

See accompanying notes to the unaudited condensed consolidated financial statements.

6

Hamilton Insurance Group, Ltd.

Unaudited Condensed Consolidated Statements of Shareholders' Equity

For the Three and Six Months Ended June 30, 2024 and 2023

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Common shares
Balance, beginning of period	$	1,109	$	1,037	$	1,101	$	1,030
Issuance of common shares	1		1		11		8
Repurchases of common shares	(91)		(2)		(93)		(2)
Balance, end of period	1,019		1,036		1,019		1,036
Additional paid-in capital
Balance, beginning of period	1,255,055		1,121,334		1,249,817		1,120,242
Issuance of common shares	(1)		—		386		(7)
Repurchases of common shares	(91,602)		(502)		(94,044)		(1,776)
Share compensation expense	8,133		3,734		15,426		6,107
Balance, end of period	1,171,585		1,124,566		1,171,585		1,124,566
Accumulated other comprehensive income (loss)
Balance, beginning and end of period	(4,441)		(4,441)		(4,441)		(4,441)
Retained earnings
Balance, beginning of period	957,782		598,510		801,373		547,352
Net income (loss)	200,382		41,288		477,714		94,290
Net income attributable to non-controlling interest	(69,297)		(4,501)		(189,455)		(6,011)
Share compensation expense	—		(4,169)		—		(4,169)
Repurchases of common shares	(18,483)		(135)		(19,248)		(469)
Balance, end of period	1,070,384		630,993		1,070,384		630,993
Total shareholders’ equity	$	2,238,547	$	1,752,154	$	2,238,547	$	1,752,154

See accompanying notes to the unaudited condensed consolidated financial statements.

7

Hamilton Insurance Group, Ltd.

Unaudited Condensed Consolidated Statements of Cash Flows

For the Six Months Ended June 30, 2024 and 2023

($ in thousands)	2024		2023
Operating activities
Net income (loss)	$	477,714	$	94,290
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	7,455		5,794
Share compensation expense	15,426		6,107
Net realized (gains) losses on investments	(288,934)		10,040
Change in net unrealized (gains) losses on investments	(117,688)		(64,579)
Other items	1,648		(2,802)
Change in:
Premiums receivable	(274,848)		(233,605)
Paid losses recoverable	(2,488)		(41,873)
Deferred acquisition costs	(46,384)		(30,133)
Prepaid reinsurance	(105,268)		(87,505)
Unpaid losses and loss adjustment expenses recoverable	768		14,923
Other assets	8,018		6,235
Reserve for losses and loss adjustment expenses	212,856		42,825
Unearned premiums	291,149		206,535
Reinsurance balances payable	127,323		137,358
Accounts payable and accrued expenses and other	7,891		12,301
Net cash provided by (used in) operating activities	314,638		75,911
Investing activities
Proceeds from redemptions from Two Sigma Funds	1,518,920		1,267,647
Contributions to Two Sigma Funds	(1,186,327)		(1,349,973)
Purchases of fixed maturity investments	(910,380)		(476,046)
Proceeds from sales, redemptions and maturity of fixed maturity investments	657,390		284,572
Purchases of short-term investments	(819,859)		(732,261)
Proceeds from sales of short-term investments	806,005		690,970
Change in receivables for investments sold	30,112		335
Change in payables for investments purchased	44,674		(29,425)
Other	(10,626)		(7,741)
Net cash provided by (used in) investing activities	129,909		(351,922)
Financing activities
Issuance of common shares	11		8
Repurchases of common shares	(113,385)		(2,247)
Contribution of additional paid-in capital	386		(7)
Withdrawal of non-controlling interest	(112,313)		(6,006)
Net cash provided by (used in) financing activities	(225,301)		(8,252)
Effect of exchange rate changes on cash and cash equivalents and restricted cash and cash equivalents	(5,254)		2,278
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	213,992		(281,985)
Cash and cash equivalents and restricted cash and cash equivalents, beginning of period	900,860		1,207,203
Cash and cash equivalents and restricted cash and cash equivalents, end of period	$	1,114,852	$	925,218

See accompanying notes to the unaudited condensed consolidated financial statements.

8

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

1. Organization

Hamilton Insurance Group, Ltd. ("Hamilton Group", the "Group" or the "Company"), the ultimate group holding company, was incorporated on September 4, 2013, under the laws of Bermuda. On November 14, 2023, the Company consummated an initial public offering ("IPO") of its Class B common shares, which are listed on the NYSE.

Our Bermuda operations are led by Hamilton Re, Ltd. ("Hamilton Re"), a registered Class 4 insurer incorporated in Bermuda. Hamilton Re writes property, casualty, and specialty insurance and reinsurance on a global basis.

Hamilton Re US is a tax partnership that was formed pursuant to an arrangement between Hamilton Re and its Bermuda-incorporated affiliate, Hamilton ILS Holdings Limited. The tax partnership is treated as a U.S. corporation for U.S. tax purposes and is registered with the U.S. Internal Revenue Service, such that underwriting and investment income derived from capital allocated to Hamilton Re US are subject to U.S. taxation.

Ada Capital Management Limited ("ACML"), a wholly owned insurance agent incorporated and regulated in Bermuda, is authorized to underwrite on behalf of Ada Re, Ltd. ("Ada Re").

Our London operations are comprised of Hamilton Managing Agency Limited ("HMA"), a Lloyd’s managing agency, which manages our wholly aligned Syndicate 4000 and a third-party funded Lloyd’s Syndicate. Syndicate 4000 operates in the Lloyd’s market and underwrites property, casualty, and specialty insurance and reinsurance business on a subscription basis.

Our Dublin operations are comprised of Hamilton Insurance Designated Activity Company ("HIDAC"), a Dublin-based insurer with a U.K. branch and extensive licensing in the United States, including excess and surplus lines and reinsurance in all 50 states.

Hamilton Managing General Agency Americas LLC ("HMGA Americas") is licensed throughout the United States and underwrites on behalf of the Group's London, Dublin and Bermuda operations solely in respect of Hamilton Re US, providing access from the U.S. to the Lloyd's market, the Group's rated Irish carrier and the Group's Bermuda balance sheet, respectively.

Hamilton Select Insurance Inc. ("Hamilton Select") is a U.S. domestic excess and surplus lines carrier incorporated in Delaware and authorized to write excess and surplus business in all 50 states.

Two Sigma Hamilton Fund, LLC ("TS Hamilton Fund"), is a Delaware limited liability company. In 2013, Hamilton Re entered into a limited liability company agreement with TS Hamilton Fund and Two Sigma Principals, LLC (the "Managing Member") as the managing member of TS Hamilton Fund. Effective July 1, 2023, Hamilton Re has committed to an investment in TS Hamilton Fund in an amount up to the lesser of (i) $1.8 billion or (ii) 60% of Hamilton Group’s net tangible assets (previously equal to a minimum of 95% of the consolidated net tangible assets of Hamilton Group). TS Hamilton Fund has engaged Two Sigma Investments, LP ("Two Sigma"), a related party Delaware limited partnership, to serve as its investment manager. Two Sigma is a United States Securities and Exchange Commission registered investment adviser specializing in quantitative analysis (see Note 3, Investments for further details).

Unconsolidated Related Parties

Ada Re is a special purpose insurer funded by third party investors and formed to provide fully collateralized reinsurance and retrocession to both Hamilton Group and third-party cedants.

Easton Re has issued an industry loss index-triggered catastrophe bond that provides the Company's operating platforms with multi-year risk transfer capacity to protect against named storm risk in the United States and earthquake risk in the United States and Canada. See Note 6, Reinsurance, for further details.

9

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

2. Summary of Significant Accounting Policies

There have been no material changes to the Company's significant accounting policies as described in its Annual Report on Form 10-K for the year ended December 31, 2023, (the "Form 10-K"), except as described below.

a.Basis of Presentation

These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and Article 10 of Regulation S-X, for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In addition, the year-end balance sheet data was derived from audited financial statements but does not include all disclosures required by GAAP. In the opinion of management, these unaudited condensed consolidated financial statements reflect all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the Company's financial position and results of operations as at the end of, and for, the periods presented.

These financial statements include the accounts of Hamilton Group, Hamilton Re, Hamilton U.K. Holdings Limited, Hamilton Select, HMGA Americas, ACML, and TS Hamilton Fund (collectively the "Company"). All significant intercompany transactions and balances have been eliminated on consolidation. Certain comparative information has been reclassified to conform to the current year presentation.

b.Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The major estimates recorded in the Company’s financial statements include, but are not limited to, premiums written, provisions for estimated future credit losses, the reserve for losses and loss adjustment expenses and the fair value of investments.

c.Recent Accounting Pronouncements

Recently Issued Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07 Segment Reporting, which enhances the qualitative and quantitative disclosures related to reportable segments. The guidance is effective for annual periods beginning after December 15, 2023 and interim periods beginning after December 15, 2024. Early adoption is permitted. This guidance will not have a material impact on the Company's results of operations, financial position, or cash flows.

In December 2023, the FASB issued ASU 2023-09 Income Taxes, which enhances the quantitative annual disclosures related to tax rate reconciliations and income taxes paid and requires additional qualitative discussion of applicable tax jurisdictions and the nature of certain reconciling items. The guidance is effective for annual periods beginning after December 15, 2024. Early adoption is permitted. This guidance will not have a material impact on the Company's results of operations, financial position, or cash flows.

10

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

3. Investments

Fixed Maturity and Short-Term Investments - Trading

The Company’s fixed maturity and short-term investments at June 30, 2024 and December 31, 2023 are as follows:

	2024
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Fixed maturities:
U.S. government treasuries	$	702,657	$	966	$	(15,523)	$	688,100
U.S. states, territories and municipalities	4,477		—		(235)		4,242
Non-U.S. sovereign governments and supranationals	74,597		615		(1,508)		73,704
Corporate	1,023,626		3,243		(20,357)		1,006,512
Residential mortgage-backed securities - Agency	236,874		93		(16,231)		220,736
Residential mortgage-backed securities - Non-agency	5,961		9		(674)		5,296
Commercial mortgage-backed securities - Non-agency	33,355		4		(1,033)		32,326
Other asset-backed securities	38,192		52		(230)		38,014
Total fixed maturities	2,119,739		4,982		(55,791)		2,068,930
Short-term investments	461,525		2,017		—		463,542
Total	$	2,581,264	$	6,999	$	(55,791)	$	2,532,472

	2023
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Fixed maturities:
U.S. government treasuries	$	717,134	$	5,137	$	(14,021)	$	708,250
U.S. states, territories and municipalities	4,656		—		(286)		4,370
Non-U.S. sovereign governments and supranationals	55,662		2,175		(1,591)		56,246
Corporate	877,493		8,443		(22,060)		863,876
Residential mortgage-backed securities - Agency	180,661		435		(12,583)		168,513
Residential mortgage-backed securities - Non-agency	5,639		16		(671)		4,984
Commercial mortgage-backed securities - Non-agency	11,473		—		(1,050)		10,423
Other asset-backed securities	14,781		20		(195)		14,606
Total fixed maturities	1,867,499		16,226		(52,457)		1,831,268
Short-term investments	427,437		1,441		—		428,878
Total	$	2,294,936	$	17,667	$	(52,457)	$	2,260,146

11

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

Contractual Maturities Summary

The following table presents contractual maturities of fixed maturity securities at June 30, 2024. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	2024
($ in thousands)	Amortized Cost		Fair Value
Due less than one year	$	134,327	$	131,817
Due after one through five years	1,405,050		1,377,669
Due after five through ten years	262,173		259,858
Due after ten years	3,807		3,214
Mortgage-backed	276,190		258,358
Asset-backed	38,192		38,014
Total	$	2,119,739	$	2,068,930

Investments in Two Sigma Funds

The Company’s investments in Two Sigma Funds at June 30, 2024 and December 31, 2023 are as follows:

	2024						2023
($ in thousands)	Cost		Net Unrealized Gains (Losses)		Fair Value		Cost		Net Unrealized Gains (Losses)		Fair Value
Two Sigma Futures Portfolio, LLC (FTV)	$	319,216	$	52,179	$	371,395	$	433,911	$	(38,105)	$	395,806
Two Sigma Spectrum Portfolio, LLC (STV)	231,538		115,187		346,725		193,299		88,228		281,527
Two Sigma Equity Spectrum Portfolio, LLC    (ESTV)	160,482		45,080		205,562		142,981		31,156		174,137
Total	$	711,236	$	212,446	$	923,682	$	770,191	$	81,279	$	851,470

The Company, through its investments in FTV, STV and ESTV, seeks to achieve absolute dollar-denominated returns on a substantial capital base, primarily by combining multiple hedged and leveraged systematic investment strategies with proprietary risk management and execution techniques. These systematic strategies include, but are not limited to, technical and statistically-based, fundamental-based, event-based, market condition-based and spread-based strategies as well as contributor-based and/or sentiment-based strategies and blended strategies. FTV primarily utilizes systematic strategies to gain broad macro exposure to FX, fixed income, equity and credit indices, and commodities, predominantly by trading futures, spots, forwards, options, swaps, cash bonds and exchange traded products. STV primarily utilizes systematic strategies to trade U.S.-listed equity securities and related instruments and derivatives. ESTV primarily utilizes systematic strategies to trade non-U.S.-listed equity securities and related instruments and derivatives. At June 30, 2024, the Company owns an 18.4%, 18.1% and 10.0% interest in each of the FTV, STV and ESTV funds, respectively.

The following table summarizes certain investments of FTV, STV and ESTV where TS Hamilton Fund’s proportionate share of the fair value of the investment represents more than 5% of TS Hamilton Fund’s members’ equity at June 30, 2024:

	2024
($ in thousands)	Principal / Shares (1)	Fair Value (1)		% of Members' Equity
State Street Treasury Obligations Money Market Fund	183,197	$	183,197	9.6	%
U.S. Treasury Securities, 0.0000%- 4.6250%, due 7/2/2024 - 5/15/2054	2,026,171	$	2,024,274	106.1	%
U.S. Treasury Securities, 4.2500%- 4.6250%, due 6/30/2026 - 5/15/2054	(338,908)	$	(338,626)	(17.8)	%

(1) Values represent TS Hamilton Fund’s proportionate share of the aggregate of FTV, STV and ESTV total holdings.

12

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

Two Sigma and the Managing Member are related parties to the Company as described further in Note 1, Organization. Effective July 1, 2023, a revised investment management agreement with Two Sigma requires TS Hamilton Fund to incur a management fee of 2.5% of the non-managing members' equity in the net asset value of the TS Hamilton Fund per annum (previously 3%). The management fee for the three months ended June 30, 2024 and 2023 was $11.9 million and $12.1 million, respectively, and the management fee for the six months ended June 30, 2024 and 2023 was $23.2 million and $24.0 million, respectively.

Under the terms of the revised limited liability company agreement between Hamilton Re and the Managing Member, the Managing Member remains entitled to an incentive allocation equal to 30% of TS Hamilton Fund’s net profits, subject to high watermark provisions, and adjusted for withdrawals and any incentive allocation to the Managing Member. In the event there is a net loss during a quarter and a net profit during any subsequent quarter, the Managing Member is entitled to a modified incentive allocation whereby the regular incentive allocation will be reduced by 50% until subsequent cumulative net profits are credited in an amount equal to 200% of the previously allocated net losses. The Managing Member is also entitled to receive a revised additional incentive allocation as of the end of each fiscal year (or on any date Hamilton Re withdraws all or a portion of its capital), in an amount equal to 25% of the Excess Profits (previously 20%). "Excess Profits" for any given fiscal year (or other such accounting period) means the net profits over 10% for such fiscal year (previously 15%), net of management fees and expenses and gross of incentive allocations, but only after recouping previously unrecouped net losses. To the extent Hamilton Re contributes capital other than at the beginning of a fiscal year or withdraws capital other than at the end of a fiscal year, the additional incentive allocation hurdle with respect to such capital is prorated. The aggregate incentive allocation (inclusive of the additional incentive allocation) for the three months ended June 30, 2024 and 2023 was $69.3 million and $4.5 million, respectively, and the aggregate incentive allocation (inclusive of the additional incentive allocation) for the six months ended June 30, 2024 and 2023 was $189.4 million and $6.0 million, respectively.

Hamilton Re has a commitment with TS Hamilton Fund to maintain an amount up to the lesser of (i) $1.8 billion or

(ii) 60% of Hamilton Insurance Group’s net tangible assets in TS Hamilton Fund, such lesser amount, the "Minimum Commitment Amount", for a three-year period (the "Initial Term") and for rolling three-year periods thereafter (each such three-year period the "Commitment Period"), subject to certain circumstances and the liquidity options described below, with the Commitment Period ending on June 30, 2026. The Commitment Period consists of a 3-year rolling term that automatically renews on an annual basis unless Hamilton Re or the Managing Member provide advance notice of non-renewal.

The TS Hamilton Fund generally has two liquidity options, subject to Hamilton Re’s minimum investment commitment, which are as follows:

•Monthly liquidity - Subject to certain conditions, Hamilton Re may request a whole or partial withdrawal of its capital account, no later than fifteen days prior to the end of a calendar month, effective as of the last day of such calendar month.

•Daily liquidity - Subject to certain limited circumstances, including the need to meet obligations pursuant to Hamilton Re’s underwriting operations, Hamilton Re may request a withdrawal of all or a portion of its capital account upon at least one business day’s written notice of such withdrawal request date to the Managing Member.

At its discretion, the Managing Member may permit or require Hamilton Re to withdraw all or any portion of its respective capital account at other times, or waive or reduce certain notice periods, or allow a notice to be revoked. The Managing Member may withdraw all or any portion of its capital account at any time.

13

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

Total Net Realized and Unrealized Gains (Losses) on Investments and Net Investment Income (Loss)

The components of total net realized and unrealized gains (losses) on investments and net investment income (loss) for the three and six months ended June 30, 2024 and 2023 are as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Net realized and unrealized gains (losses) on investments:
Net realized gains (losses) on investments	$	139,489	$	27,612	$	288,934	$	(10,040)
Change in net unrealized gains (losses) on investments	11,762		(8,206)		117,688		64,579
Net realized and unrealized gains (losses) on investments	151,251		19,406		406,622		54,539
Net investment income (loss):
Fixed maturities	19,009		10,815		35,960		18,970
Short-term investments	41		98		40		249
TS Hamilton Fund	2,917		6,025		5,932		9,912
Cash and cash equivalents	4,095		2,412		8,210		4,725
Other	415		697		1,167		1,120
Interest and other	26,477		20,047		51,309		34,976
Management fees	(12,482)		(12,515)		(24,433)		(24,849)
Other expenses	(275)		(241)		(538)		(477)
Net investment income (loss)	13,720		7,291		26,338		9,650
Total net realized and unrealized gains (losses) on investments and net investment income (loss)	$	164,971	$	26,697	$	432,960	$	64,189

Net Realized Gains (Losses) on Investments

The components of net realized gains (losses) on investments for the three and six months ended June 30, 2024 and 2023 are as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Fixed maturities and short-term investments	$	(1,695)	$	2,574	$	(4,636)	$	(3,108)
TS Hamilton Fund	140,900		24,827		293,286		(7,143)
Other	284		211		284		211
Net realized gains (losses) on investments	$	139,489	$	27,612	$	288,934	$	(10,040)

14

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

Net Unrealized Gains (Losses) on Investments

The components of net unrealized gains (losses) on investments for the three and six months ended June 30, 2024 and 2023 are as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Fixed maturities and short-term investments	$	(1,608)	$	(19,539)	$	(14,599)	$	3,019
TS Hamilton Fund	13,370		11,333		132,287		61,560
Net unrealized gains (losses) on investments	$	11,762	$	(8,206)	$	117,688	$	64,579

Pledged Assets

At June 30, 2024 and December 31, 2023, pledged investments at fair value were comprised of $237.9 million and $232.2 million, respectively, securing a portion of the capital requirements for business written at Lloyd's, $88.2 million and $54.1 million, respectively, held in trust accounts for the benefit of U.S. state regulatory authorities and $36.6 million and $37.2 million respectively, securing other underwriting obligations. In addition, certain investments were pledged as security for letter of credit facilities as described further in Note 9, Debt and Credit Facilities.

At June 30, 2024 and December 31, 2023, restricted cash and cash equivalents balances were comprised of $94.1 million and $97.4 million, respectively, securing other underwriting obligations, $2.7 million and $7.2 million, respectively, securing a portion of the capital requirements for business written at Lloyd's, $1.5 million and $1.5 million, respectively, in trust accounts for the benefit of regulatory authorities, and $Nil and $0.3 million, respectively, of escrow funds.

Total cash and cash equivalents and restricted cash and cash equivalents of $1.1 billion presented in the statement of cash flows was comprised of cash and cash equivalents of $1.0 billion and restricted cash and cash equivalents of $98.3 million on the balance sheet at June 30, 2024. Total cash and cash equivalents and restricted cash and cash equivalents of $900.9 million presented in the statement of cash flows at December 31, 2023 was comprised of cash and cash equivalents of $794.5 million and restricted cash and cash equivalents of $106.4 million on the balance sheet.

4. Fair Value

Financial Instruments Subject to Fair Value Measurements

Accounting guidance over fair value measurements requires that a fair value measurement reflect the assumptions market participants would use in pricing an asset or liability based on the best information available. Assumptions include the risks inherent in a particular valuation technique (such as a pricing model) and/or the risks inherent in the inputs to the model. The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the "exit price"). Instruments that the Company owns are marked to bid prices.

Basis of Fair Value Measurements

Fair value measurement accounting guidance also establishes a fair value hierarchy that prioritizes the inputs to the respective valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). An asset or liability’s classification within the fair value hierarchy is based on the lowest level of significant input to its valuation. The three levels of the fair value hierarchy are:

15

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

•Level 1 - Inputs that reflect unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date;

•Level 2 - Inputs other than quoted prices included within Level 1 that are observable for the asset or liability either directly or indirectly, including inputs in markets that are not considered to be active; and

•Level 3 - Inputs that are both significant to the fair value measurement and unobservable.

Assets Recorded at Fair Value - Fixed Maturity and Short-term Investments

The following section describes the valuation methodologies used to determine the fair value of the Company’s fixed maturity and short-term investments by asset class:

•U.S. government treasuries: fair value based on observable market inputs such as quoted prices, reported trades, quoted prices for similar issuances and benchmark yields;

•U.S. states, territories and municipalities: fair value based on observable market inputs such as quoted market prices, quoted prices for similar securities, benchmark yields and credit spreads;

•Non-U.S. sovereign governments and supranationals: fair value based on observable market inputs such as quoted market prices, quoted prices for similar securities and models with observable inputs such as benchmark yields and credit spreads, and then, where applicable, converted to U.S. dollars using an exchange rate from a nationally recognized source;

•Corporate: fair value based on observable market inputs such as quoted market prices, quoted prices for similar securities, benchmark yields and credit spreads;

•Asset-backed and mortgage-backed securities: fair value based on observable inputs such as quoted prices, reported trades, quoted prices for similar issuances or benchmark yields and cash flow models using observable inputs such as prepayment speeds, collateral performance and default spreads; and

•Short-term investments: fair value based on observable market inputs such as quoted prices, reported trades, quoted prices for similar issuances and benchmark yields.

The following table presents the financial instruments measured at fair value on a recurring basis at June 30, 2024 and December 31, 2023:

	2024
($ in thousands)	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. government treasuries	$	—	$	688,100	$	—	$	688,100
U.S. states, territories and municipalities	—		4,242		—		4,242
Non-U.S. sovereign governments and supranationals	—		73,704		—		73,704
Corporate	—		1,006,512		—		1,006,512
Residential mortgage-backed securities - Agency	—		220,736		—		220,736
Residential mortgage-backed securities - Non-agency	—		5,296		—		5,296
Commercial mortgage-backed securities - Non-agency	—		32,326		—		32,326
Other asset-backed securities	—		38,014		—		38,014
Total fixed maturities	—		2,068,930		—		2,068,930
Short-term investments	—		463,542		—		463,542
Total	$	—	$	2,532,472	$	—	$	2,532,472

16

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

	2023
($ in thousands)	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. government treasuries	$	—	$	708,250	$	—	$	708,250
U.S. states, territories and municipalities	—		4,370		—		4,370
Non-U.S. sovereign governments and supranationals	—		56,246		—		56,246
Corporate	—		863,876		—		863,876
Residential mortgage-backed securities - Agency	—		168,513		—		168,513
Residential mortgage-backed securities - Non-agency	—		4,984		—		4,984
Commercial mortgage-backed securities - Non-agency	—		10,423		—		10,423
Other asset-backed securities	—		14,606		—		14,606
Total fixed maturities	—		1,831,268		—		1,831,268
Short-term investments	—		428,878		—		428,878
Total	$	—	$	2,260,146	$	—	$	2,260,146

The carrying values of cash and cash equivalents, restricted cash and cash equivalents, accrued investment income, receivables for investments sold, certain other assets, payables for investments purchased, and certain other liabilities approximate their fair values.

5. Variable Interest Entities

TS Hamilton Fund

TS Hamilton Fund meets the definition of a variable interest entity ("VIE") principally because the Managing Member does not hold substantive equity at risk in the entity but controls all of the decision making authority over it. Therefore, the Company assessed its ownership in the VIE to determine if it is the primary beneficiary. The Managing Member is a related party to the Company and collectively they hold all of the variable interest. The Company performed an assessment of all relevant facts and circumstances and determined that it is the entity within the related party group for whom substantially all of the activities of the VIE are conducted. As a result, the Company concluded that it is the primary beneficiary of TS Hamilton Fund.

Activity in the non-controlling interest of TS Hamilton Fund for the three and six months ended June 30, 2024 and 2023 was as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Balance - beginning of period	$	54,727	$	120	$	133	$	119
Withdrawals	(46,749)		(4,497)		(112,313)		(6,006)
Equity in earnings	13		4		34		5
Incentive allocation	69,284		4,497		189,421		6,006
Balance - end of period	$	77,275	$	124	$	77,275	$	124

17

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

The following table presents the total assets and total liabilities of TS Hamilton Fund at June 30, 2024 and December 31, 2023. Creditors or beneficial interest holders of TS Hamilton Fund have no recourse to the general credit of the Company as the Company’s obligation is limited to the amount of its committed investment.

($ in thousands)	2024		2023
Assets
Cash and cash equivalents	$	650,671	$	479,255
Short-term investments	463,542		428,878
Investments in Two Sigma Funds, at fair value	923,682		851,470
Receivables for investments sold	—		41,087
Interest and dividends receivable	1,029		966
Total assets	2,038,924		1,801,656
Liabilities
Accounts payable and accrued expenses	177		191
Withdrawal payable	43,030		6,480
Payable for investments purchased	87,716		62,440
Total liabilities	130,923		69,111
Total net assets managed by TS Hamilton Fund	$	1,908,001	$	1,732,545

6. Reinsurance

The Company purchases reinsurance and other protection to manage its risk portfolio and to reduce its exposure to large losses. The Company currently has in place contracts that provide for recovery of a portion of certain loss and loss adjustment expenses, generally in excess of various retentions or on a proportional basis. Amounts recoverable under reinsurance contracts are recorded as assets. The Company remains liable to the extent that any reinsurance company fails to meet its obligations.

Allowance for Expected Credit Losses

Premiums receivable, paid losses recoverable, and unpaid losses and loss adjustment expenses recoverable comprise the Company's most significant credit exposures not carried at fair value. The Company has not historically experienced significant credit losses. In determining an allowance for these assets, the Company considers historical information in combination with counterparty financial strength ratings and the extent to which balances are collateralized. The Company assesses the risk of future default by evaluating current market conditions for the likelihood of default and calculates its provision for current expected credit losses under the probability of default and loss given default methodology.

Premiums Receivable

Premiums receivable are estimated based on policy terms and reports received from the underlying counterparties, supplemented by management's judgment. Due to the nature of the (re)insurance business, the Company routinely receives reports and premiums subsequent to the inception of the coverage period. At June 30, 2024, the Company’s premiums receivable balance, net of credit provisions of $2.0 million, was $933.2 million. At December 31, 2023, the Company’s premiums receivable balance, net of credit provisions of $3.0 million, was $658.4 million.

18

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

The following table provides a roll forward of the provision for current expected credit losses of the Company's premiums receivable for the three and six months ended June 30, 2024 and 2023:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Beginning balance	$	2,153	$	3,136	$	3,000	$	2,856
Increase (decrease) in allowance	(191)		(38)		(1,038)		242
Ending balance	$	1,962	$	3,098	$	1,962	$	3,098

Reinsurance Balances Recoverable

Reinsurance balances recoverable is comprised of amounts due from reinsurers based on the claim liabilities associated with the reinsured policy. The Company accrues amounts due from reinsurers based on estimated ultimate contract losses. At June 30, 2024, the Company’s paid and unpaid reinsurance recoverable balances net of credit provisions were $147.7 million and $1.2 billion, respectively, with a total corresponding provision for current expected credit losses of $0.8 million. At December 31, 2023, the Company’s paid and unpaid reinsurance recoverable balances net of credit provisions were $145.2 million and $1.2 billion, respectively, with a total corresponding provision for current expected credit losses of $0.7 million.

The following table provides a roll forward of the provision for current expected credit losses of the Company's reinsurance recoverable for the three and six months ended June 30, 2024 and 2023:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Beginning balance	$	709	$	792	$	687	$	777
Increase (decrease) in allowance	46		28		68		43
Ending balance	$	755	$	820	$	755	$	820

At June 30, 2024 and December 31, 2023, the distribution of the Company’s paid losses recoverable and unpaid losses and loss adjustment expenses recoverable as categorized by major rating agencies were as follows:

Classification	2024		2023
Collateralized	25.7	%	28.5	%
A- or better	74.0	%	71.0	%
Below A-	0.3	%	0.5	%
Total	100.0	%	100.0	%

At June 30, 2024 and December 31, 2023, the three largest balances by reinsurer accounted for 25%, 22% and 12%, and 27%, 20% and 12%, respectively, of paid losses recoverable and unpaid losses and loss adjustment expenses recoverable.

19

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

Loss Portfolio Transfer

On February 6, 2020, the Company entered into a loss portfolio transfer agreement (the "LPT"), under which the insurance liabilities arising from certain casualty risks for the Lloyd's Years of Account ("YOA") 2016, 2017 and 2018 were retroceded to a third party in exchange for total premium of $72.1 million. This transaction was accounted for as retroactive reinsurance under which cumulative ceded losses exceeding the LPT premium are recognized as a deferred gain liability and amortized into income over the settlement period of the ceded reserves in proportion to cumulative losses collected over the estimated ultimate reinsurance recoverable. The amount of the deferral is recalculated each reporting period based on updated ultimate loss estimates. Consequently, cumulative adverse development subsequent to the signing of the LPT may result in significant losses from operations until periods when the deferred gain is recognized as a benefit to earnings.

At June 30, 2024 and December 31, 2023, the balance of reinsurance recoverable on unpaid losses due under this LPT was $45.7 million and $49.8 million, respectively. Amortization of the deferred gain was income of $1.0 million and $3.1 million during the three months ended June 30, 2024 and 2023, respectively, and income of $1.9 million and $3.4 million during the six months ended June 30, 2024 and 2023, respectively, which was recorded through losses and loss adjustment expenses in accordance with the actual loss payments and updated estimates of ultimate losses of the subject business.

Catastrophe Bond Reinsurance

In December 2023, Hamilton Group sponsored an industry loss index-triggered catastrophe bond through the issuance of Series 2024-1 Class A Principal-at-Risk Variable Rate Notes by Bermuda-domiciled Easton Re Ltd. ("Easton Re"), which provide the Company's operating platforms with multi-year risk transfer capacity of $200 million to protect against named storm risk in the United States and earthquake risk in the United States and Canada. The risk period for Easton Re is from January 1, 2024 to December 31, 2026. The Company recorded reinsurance premiums ceded of $Nil and $14.6 million during the three and six months ended June 30, 2024, respectively.

In December 2020, Hamilton Group sponsored an industry loss index-triggered catastrophe bond through the issuance of Series 2020-1 Class A Principal-at-Risk Variable Rate Notes by Singapore-domiciled Easton Re Pte, Ltd. (also "Easton Re"). Easton Re provided the Company's operating platforms with multi-year risk transfer capacity of $150 million to protect against named storm and earthquake risk in the United States. The risk period for Easton Re was from January 1, 2021 to December 31, 2023. The Company recorded reinsurance premiums ceded of $Nil and $7.2 million during the three and six months ended June 30, 2023, respectively.

20

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

7. Reserve for Losses and Loss Adjustment Expenses

The following table presents a reconciliation of unpaid losses and loss adjustment expenses ("LAE") for the six months ended June 30, 2024 and 2023:

($ in thousands)	2024		2023
Gross unpaid losses and loss adjustment expenses, beginning of period	$	3,030,037	$	2,856,275
Reinsurance recoverable on unpaid losses	1,161,077		1,177,863
Net unpaid losses and loss adjustment expenses, beginning of period	1,868,960		1,678,412
Net losses and loss adjustment expenses incurred in respect of losses occurring in:
Current year	436,348		330,458
Prior years	10,498		(2,481)
Total incurred	446,846		327,977
Net losses and loss adjustment expenses paid in respect of losses occurring in:
Current year	6,787		10,431
Prior years	224,576		282,252
Total paid	231,363		292,683
Foreign currency revaluation and other	(1,859)		22,454
Net unpaid losses and loss adjustment expenses, end of period	2,082,584		1,736,160
Reinsurance recoverable on unpaid losses	1,160,309		1,162,940
Gross unpaid losses and loss adjustment expenses, end of period	$	3,242,893	$	2,899,100

Net unfavorable prior year development of $10.5 million for the six months ended June 30, 2024 was primarily driven by attritional losses. See below for further details:

•Net unfavorable development of $12.6 million on specialty contracts, primarily driven by two specific large losses; and

•Net unfavorable development of $3.9 million on casualty contracts, due to higher than expected claims development across certain classes; partially offset by

•Net favorable development of $4.4 million on property contracts, driven by overall lower than expected claims development across various classes; and

•In addition, casualty business protected by the LPT discussed in Note 6, Reinsurance, benefited from $1.9 million in amortization of the associated deferred gain, partially offset by unfavorable development in the underlying reserves of $0.3 million, for a total net positive earnings impact of $1.6 million.

Net favorable prior year development of $2.5 million for the six months ended June 30, 2023 was comprised of $3.6 million of favorable prior year development on attritional losses and $1.1 million of unfavorable prior year development on catastrophe losses. See below for further details:

•Net favorable development of $5.3 million on specialty contracts, driven by lower than expected claims development across various classes; and

•Net favorable development of $1.2 million on casualty lines of business, primarily related to lower than expected claims development across various classes; offset by

•Net unfavorable development of $6.1 million on property contracts, primarily driven by higher than expected claims development relating to Winterstorm Elliot, as well as development in exited lines; and

•In addition, casualty business protected by the LPT discussed in Note 6, Reinsurance, benefited from $3.4 million in amortization of the associated deferred gain, partially offset by unfavorable development in the underlying reserves of $1.3 million, for a total net positive earnings impact of $2.1 million.

21

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

Reinsurance recoverable on unpaid losses related to the LPT discussed in Note 6, Reinsurance, was recognized for each of the six months ended June 30, 2024 and 2023 in the reconciliation of beginning and ending gross and net loss and LAE reserves presented above.

The Company amortized acquisition costs of $96.3 million and $76.9 million for the three months ended June 30, 2024 and 2023, respectively, and $180.9 million and $142.0 million for the six months ended June 30, 2024 and 2023, respectively.

Baltimore Bridge

The estimate of net reserves for losses and loss adjustment expenses related to the Francis Scott Key Baltimore Bridge collapse on March 26, 2024 is subject to significant uncertainty. As at June 30, 2024 and December 31, 2023, our recorded reserves totaled $37.9 million and $Nil, respectively.

Ukraine Conflict

Our net reserves for losses and loss adjustment expenses related to the ongoing Ukraine conflict also remain subject to significant uncertainty. As at June 30, 2024 and December 31, 2023, our recorded reserves totaled $64.1 million and $64.9 million, respectively.

Covid-19

Our Covid-19 losses also remain subject to significant uncertainty. As at June 30, 2024 and December 31, 2023, our recorded reserves relating to Covid-19 totaled $15.6 million and $14.1 million, respectively.

While the Company believes, based on current facts and circumstances, that its estimates of net reserves for losses and loss adjustment expenses are adequate for losses and loss adjustment expenses that have been incurred at June 30, 2024, the Company will continue to monitor its assumptions as new information becomes available and will adjust its estimate of net reserves for losses and loss adjustment expenses as appropriate. Actual ultimate losses for these events may differ materially from the Company's current estimates.

8. Segment Reporting

The Company has determined its reportable business segments based on the information used by management in assessing performance and allocating resources to underwriting operations and has identified two reportable business segments - International and Bermuda. Each of the Company's identified reportable segments has a Chief Executive Officer who is responsible for the overall profitability of their segment and who regularly reports and is directly accountable to the chief operating decision maker: the Chief Executive Officer of the consolidated group.

The Company evaluates the performance of reportable segments based on their respective underwriting income or loss. Underwriting income or loss is calculated as net premiums earned less losses and loss adjustment expenses, acquisition costs, and other underwriting expenses, net of third party fee income. General and administrative expenses not incurred by the reportable segments are included in corporate and other expenses as part of the reconciliation of net underwriting income or loss to net income or loss attributable to common shareholders. As the Company does not manage its assets by reportable segment, investment income and assets are not allocated to reportable segments.

The Company's core business is underwriting and its underwriting results are reflected in its reportable segments: (1) International, which is comprised of property, casualty and specialty insurance and reinsurance classes of business originating from the Company’s London, Dublin, and Hamilton Select operations; and (2) Bermuda, which is comprised of property, casualty and specialty insurance and reinsurance classes of business originating from Hamilton Re, Bermuda and Hamilton Re US and subsidiaries. The Company considers many factors, including the nature of each segment’s products, client types, production sources, distribution methods and the regulatory environment, in determining the aggregated operating segments.

Corporate includes net realized and unrealized gains (losses) on investments, net investment income (loss), other income (loss) not incurred by the reportable segments, net foreign exchange gains (losses), general and administrative expenses not incurred by the reportable segments, amortization of intangible assets, interest expense, and income tax expense (benefit).

22

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

($ in thousands)
Three Months Ended June 30, 2024	International			Bermuda			Corporate		Total
Gross premiums written	$	311,616		$	291,688		$	—	$	603,304
Net premiums written	$	234,305		$	240,763		$	—	$	475,068
Net premiums earned	$	215,643		$	203,121		$	—	$	418,764
Third party fee income	3,798			2,191			—		5,989
Losses and loss adjustment expenses	112,884			101,610			—		214,494
Acquisition costs	53,157			43,148			—		96,305
Other underwriting expenses	33,972			14,683			—		48,655
Underwriting income (loss)	$	19,428		$	45,871		$	—	$	65,299
Net realized and unrealized gains (losses) on investments							151,251		151,251
Net investment income (loss)							13,720		13,720
Net foreign exchange gains (losses)							(1,782)		(1,782)
Corporate expenses							(16,262)		(16,262)
Amortization of intangible assets							(3,317)		(3,317)
Interest expense							(6,031)		(6,031)
Income (loss) before income tax									202,878
Income tax (expense) benefit							(2,496)		(2,496)
Net income (loss)									200,382
Net income (loss) attributable to non-controlling interest							69,297		69,297
Net income (loss) attributable to common shareholders									$	131,085
Key Ratios
Attritional loss ratio - current year	52.5		%	50.5		%			51.6		%
Attritional loss ratio - prior year development	(0.2)		%	(0.5)		%			(0.4)		%
Catastrophe loss ratio - current year	0.0		%	0.0		%			0.0		%
Catastrophe loss ratio - prior year development	0.0		%	0.0		%			0.0		%
Loss and loss adjustment expense ratio	52.3		%	50.0		%			51.2		%
Acquisition cost ratio	24.7		%	21.2		%			23.0		%
Other underwriting expense ratio	14.0		%	6.2		%			10.2		%
Combined ratio	91.0		%	77.4		%			84.4		%

23

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

($ in thousands)
Three Months Ended June 30, 2023	International			Bermuda			Corporate		Total
Gross premiums written	$	277,796		$	227,164		$	—	$	504,960
Net premiums written	$	197,047		$	187,661		$	—	$	384,708
Net premiums earned	$	176,636		$	154,824		$	—	$	331,460
Third party fee income	2,401			48			—		2,449
Losses and loss adjustment expenses	87,575			91,841			—		179,416
Acquisition costs	47,260			29,596			—		76,856
Other underwriting expenses	29,540			13,203			—		42,743
Underwriting income (loss)	$	14,662		$	20,232		$	—	$	34,894
Net realized and unrealized gains (losses) on investments							19,406		19,406
Net investment income (loss)							7,291		7,291
Other income (loss), excluding third party fee income							(29)		(29)
Net foreign exchange gains (losses)							(3,341)		(3,341)
Corporate expenses							(6,491)		(6,491)
Amortization of intangible assets							(2,305)		(2,305)
Interest expense							(5,189)		(5,189)
Income (loss) before income tax									44,236
Income tax (expense) benefit							(2,948)		(2,948)
Net income (loss)									41,288
Net income (loss) attributable to non-controlling interest							4,501		4,501
Net income (loss) attributable to common shareholders									$	36,787
Key Ratios
Attritional loss ratio - current year	52.9		%	48.9		%			51.0		%
Attritional loss ratio - prior year development	(3.3)		%	0.3		%			(1.6)		%
Catastrophe loss ratio - current year	0.9		%	9.8		%			5.0		%
Catastrophe loss ratio - prior year development	(0.9)		%	0.3		%			(0.3)		%
Loss and loss adjustment expense ratio	49.6		%	59.3		%			54.1		%
Acquisition cost ratio	26.8		%	19.1		%			23.2		%
Other underwriting expense ratio	15.4		%	8.5		%			12.2		%
Combined ratio	91.8		%	86.9		%			89.5		%

24

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

($ in thousands)
Six Months Ended June 30, 2024	International			Bermuda			Corporate		Total
Gross premiums written	$	632,457		$	692,788		$	—	$	1,325,245
Net premiums written	$	419,338		$	570,610		$	—	$	989,948
Net premiums earned	$	412,456		$	391,611		$	—	$	804,067
Third party fee income	7,387			6,083			—		13,470
Losses and loss adjustment expenses	229,046			217,800			—		446,846
Acquisition costs	100,876			79,982			—		180,858
Other underwriting expenses	65,174			26,834			—		92,008
Underwriting income (loss)	$	24,747		$	73,078		$	—	$	97,825
Net realized and unrealized gains (losses) on investments							406,622		406,622
Net investment income (loss)							26,338		26,338
Net foreign exchange gains (losses)							(3,911)		(3,911)
Corporate expenses							(27,764)		(27,764)
Amortization of intangible assets							(6,569)		(6,569)
Interest expense							(11,738)		(11,738)
Income (loss) before income tax									480,803
Income tax (expense) benefit							(3,089)		(3,089)
Net income (loss)									477,714
Net income (loss) attributable to non-controlling interest							189,455		189,455
Net income (loss) attributable to common shareholders									$	288,259
Key Ratios
Attritional loss ratio - current year	54.2		%	54.3		%			54.3		%
Attritional loss ratio - prior year development	1.3		%	1.3		%			1.3		%
Catastrophe loss ratio - current year	0.0		%	0.0		%			0.0		%
Catastrophe loss ratio - prior year development	0.0		%	0.0		%			0.0		%
Loss and loss adjustment expense ratio	55.5		%	55.6		%			55.6		%
Acquisition cost ratio	24.5		%	20.4		%			22.5		%
Other underwriting expense ratio	14.0		%	5.3		%			9.8		%
Combined ratio	94.0		%	81.3		%			87.9		%

25

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

($ in thousands)
Six Months Ended June 30, 2023	International			Bermuda			Corporate		Total
Gross premiums written	$	524,909		$	518,215		$	—	$	1,043,124
Net premiums written	$	319,067		$	414,139		$	—	$	733,206
Net premiums earned	$	326,151		$	289,211		$	—	$	615,362
Third party fee income	5,302			150			—		5,452
Losses and loss adjustment expenses	157,967			170,010			—		327,977
Acquisition costs	84,452			57,543			—		141,995
Other underwriting expenses	58,002			23,884			—		81,886
Underwriting income (loss)	$	31,032		$	37,924		$	—	$	68,956
Net realized and unrealized gains (losses) on investments							54,539		54,539
Net investment income (loss)							9,650		9,650
Net foreign exchange gains (losses)							(5,387)		(5,387)
Corporate expenses							(13,154)		(13,154)
Amortization of intangible assets							(5,075)		(5,075)
Interest expense							(10,718)		(10,718)
Income (loss) before income tax									98,811
Income tax (expense) benefit							(4,521)		(4,521)
Net income (loss)									94,290
Net income (loss) attributable to non-controlling interest							6,011		6,011
Net income (loss) attributable to common shareholders									$	88,279
Key Ratios
Attritional loss ratio - current year	51.6		%	48.5		%			50.1		%
Attritional loss ratio - prior year development	(3.8)		%	3.0		%			(0.6)		%
Catastrophe loss ratio - current year	0.4		%	7.1		%			3.6		%
Catastrophe loss ratio - prior year development	0.2		%	0.2		%			0.2		%
Loss and loss adjustment expense ratio	48.4		%	58.8		%			53.3		%
Acquisition cost ratio	25.9		%	19.9		%			23.1		%
Other underwriting expense ratio	16.2		%	8.2		%			12.4		%
Combined ratio	90.5		%	86.9		%			88.8		%

The following table presents gross premiums written by the geographical location of the Company's subsidiaries for the three and six months ended June 30, 2024 and 2023:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
International
Lloyd's of London	$	199,378	$	169,463	$	397,959	$	318,171
Ireland	85,053		90,968		184,126		174,731
U.S.	27,185		17,365		50,372		32,007
Total International	311,616		277,796		632,457		524,909
Bermuda	291,688		227,164		692,788		518,215
Total	$	603,304	$	504,960	$	1,325,245	$	1,043,124

26

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

9. Debt and Credit Facilities

Debt

On June 23, 2022, Hamilton Group renewed its unsecured $150 million term loan credit arrangement, as amended from time to time (the "Facility"), with various lenders as arranged by Wells Fargo Securities, LLC. All or a portion of the loan issued under the Facility bears interest at either (a) the Base Rate plus the Applicable Margin or (b) the Adjusted Term Secured Overnight Financing Rate ("SOFR") plus the Applicable Margin, at Hamilton Group's discretion. In the event of default, an additional 2% interest in excess of (a) or (b) will be levied, not to exceed the highest rate permissible under applicable law, and certain types of loans may not be available for borrowing by Hamilton Group under the Facility. The Facility matures on June 23, 2025, unless accelerated pursuant to the terms of the Facility, and it contains usual and customary representations, warranties, conditions and covenants for bank loan facilities of this type. The Facility also contains certain financial covenants which cap the ratio of consolidated debt to capital and require that Hamilton Group maintain a certain minimum consolidated net worth. The net worth requirement is recalculated effective as of the end of each fiscal quarter. As at June 30, 2024, the Company was in compliance with all covenants.

The following table presents the gross outstanding loan balance, loan fair value and unamortized loan issuance costs at June 30, 2024 and December 31, 2023:

($ in thousands)	2024		2023
Outstanding loan balance	$	150,000	$	150,000
Loan fair value	150,600		151,000
Unamortized loan issuance costs	$	113	$	170

Debt issuance costs are amortized over the period during which the Facility is outstanding, as an offset to net investment income (loss). The Company amortized debt issuance costs of less than $0.1 million in each of the three and six months ended June 30, 2024 and 2023. The Company’s debt is classified as Level 3 within the fair value hierarchy because it is valued using an income approach, which utilizes a discounted cash flow technique that considers the credit profile of the Company.

Credit Facilities

The Company has several available letter of credit facilities and a revolving loan facility provided by commercial banks. The letter of credit facilities are utilized to provide collateral to reinsureds of Hamilton Re and its affiliates to the extent required under insurance and reinsurance agreements and to support capital requirements at Lloyd’s.

On December 5, 2018 and December 27, 2018, Hamilton Re entered into a Master Agreement for Issuance of Payment Instruments and a Facility Letter for Issuance of Payment Instruments respectively, with CitiBank Europe Plc ("CitiBank Europe"), under which CitiBank Europe agreed to provide an uncommitted secured letter of credit facility for the issuance of standby letters of credit or similar instruments in multiple currencies. On August 8, 2023, letter of credit capacity under this facility was increased to $200 million. At all times during which it is a party to the facility, Hamilton Re is obligated to pledge to CitiBank Europe cash and/or securities with a value that equals or exceeds the aggregate face amount of its then-outstanding letters of credit. The Master Agreement contains events of default customary for facilities of this type. In the facility letter, Hamilton Re makes representations and warranties that are customary for facilities of this type and agrees that it will comply with certain informational and other undertakings.

27

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

On June 23, 2022, Hamilton Group and Hamilton Re amended and restated their unsecured credit agreement with a syndication of lenders (the "Unsecured Facility"). Under the Unsecured Facility, the lenders have agreed to provide up to an aggregate of $415 million of letter of credit capacity for Hamilton Re, up to $150 million of which may be utilized for revolving loans to be issued to Hamilton Group. At June 30, 2024, there were no loan amounts outstanding under this facility. Margin rates reflect contractually agreed rates, which are based on Hamilton Re’s current Financial Strength Rating as assigned by A.M. Best. As of April 30, 2024, letters of credit issued under the facility bear interest at a rate of 137.5 basis points (previously 150 basis points), while revolving loans if issued are subject to a fee of SOFR plus a margin of 162.5 basis points (previously 185 basis points). To the extent such loans are issued, the available letter of credit capacity shall decrease proportionally, such that the aggregate credit exposure for the lenders under the credit agreement is $415 million. Amounts unutilized under the facility are subject to a fee of 17.5 basis points (previously 22.5 basis points). Capacity is provided by Wells Fargo, National Association, Truist Bank, BMO Harris Bank N.A., Commerzbank AG, New York Branch, HSBC Bank USA, N.A., and Barclays Bank PLC. Unless renewed or otherwise terminated in accordance with its terms, the Unsecured Facility is scheduled to terminate on June 23, 2025.

On August 11, 2023, Hamilton Re and HIDAC amended their committed letter of credit facility agreement with Bank of Montreal ("BMO"), with Hamilton Group as guarantor, under which BMO agreed to make available a secured letter of credit facility of $50 million for a term that will expire on August 13, 2024. The facility bears a fee of 40 basis points for letters of credit issued and 15 basis points on any unutilized portion of the facility.

On October 26, 2023, Hamilton Re amended its letter of credit facility agreement with UBS AG ("UBS") under which UBS and certain of its affiliates agreed to make available to Hamilton Re a secured letter of credit facility of $100 million for a term that will expire on October 26, 2024. The facility bears a fee of 140 basis points on the total available capacity.

In addition, on October 27, 2023, Hamilton Re amended the unsecured letter of credit facility agreement that it utilizes to provide Funds at Lloyd's ("FAL") ("FAL LOC Facility") to support the FAL requirements of Syndicate 4000. Capacity is provided by Barclays Bank PLC, ING Bank N.V., London Branch, and Bank of Montreal, London Branch. The FAL LOC Facility was increased to $230 million for an additional one year term that expires on October 27, 2024. The facility bears a fee of 162.5 basis points on the borrowed amount.

The Company’s obligations under its credit facilities require Hamilton Group, Hamilton Re and the other parties thereto to comply with various financial and reporting covenants. All applicable entities were in compliance with all such covenants at June 30, 2024.

Certain of the Company's credit facilities are secured by pledged interests in the TS Hamilton Fund, the Company's fixed income security portfolio, or cash. The Company’s credit facilities at June 30, 2024, and associated securities pledged, were as follows:

($ in thousands)	2024
Available letter of credit and revolving loan facilities - commitments	$	995,000
Available letter of credit and revolving loan facilities - in use	731,472
Security pledged under letter of credit and revolving loan facilities:
Pledged interests in TS Hamilton Fund	$	233,014
Pledged interests in fixed income portfolio	252,056
Cash	4,017

The Company has recognized interest expense related to the above debt and credit facilities of $6.0 million and $5.2 million for the three months ended June 30, 2024 and 2023, respectively, and $11.7 million and $10.7 million for the six months ended June 30, 2024 and 2023, respectively.

28

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

10. Share Capital

Authorized and Issued

Hamilton Group’s share capital at June 30, 2024 and December 31, 2023, is comprised as follows:

($ in thousands, except share information)
Authorized:
Common shares of $0.01 par value each (2024 and 2023: 150,000,000)
Issued, outstanding and fully paid:	2024		2023
Class A common shares (2024: 19,520,078 and 2023: 28,644,807)	$	195	$	286
Class B common shares (2024: 57,358,464 and 2023: 56,036,067)	574		560
Class C common shares (2024: 25,044,229 and 2023: 25,544,229)	250		255
Total	$	1,019	$	1,101

The following is a summary of the activity related to common shares authorized for the three months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Unclassified	Total
Balance - March 31, 2024	28,644,807	72,337,352	25,544,229	23,473,612	150,000,000
Share class conversions	—	500,000	(500,000)	—	—
Balance - June 30, 2024	28,644,807	72,837,352	25,044,229	23,473,612	150,000,000

	Class A	Class B	Class C	Unclassified	Total
Balance - March 31, 2023	53,993,690	50,480,684	30,525,626	—	135,000,000
Balance - June 30, 2023	53,993,690	50,480,684	30,525,626	—	135,000,000

The following is a summary of the activity related to common shares authorized for the six months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Unclassified	Total
Balance - December 31, 2023	28,644,807	72,337,352	25,544,229	23,473,612	150,000,000
Share class conversions	—	500,000	(500,000)	—	—
Balance - June 30, 2024	28,644,807	72,837,352	25,044,229	23,473,612	150,000,000

	Class A	Class B	Class C	Unclassified	Total
Balance - December 31, 2022	53,993,690	50,480,684	30,525,626	—	135,000,000
Balance - June 30, 2023	53,993,690	50,480,684	30,525,626	—	135,000,000

29

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

The following is a summary of the activity related to common shares issued and outstanding for the three months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Total
Balance - March 31, 2024	28,644,807	56,813,977	25,544,229	111,003,013
Share class conversions	—	500,000	(500,000)	—
Exercise of warrants	—	44,487	—	44,487
Share repurchases	(9,124,729)	—	—	(9,124,729)
Balance - June 30, 2024	19,520,078	57,358,464	25,044,229	101,922,771

	Class A	Class B	Class C	Total
Balance - March 31, 2023	30,520,078	42,684,738	30,525,626	103,730,442
Share repurchases	—	(46,548)	—	(46,548)
Balance - June 30, 2023	30,520,078	42,638,190	30,525,626	103,683,894

The following is a summary of the activity related to common shares issued and outstanding for the six months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Total
Balance - December 31, 2023	28,644,807	56,036,067	25,544,229	110,225,103
Share class conversions	—	500,000	(500,000)	—
Vesting of awards	—	761,261	—	761,261
Exercise of warrants	—	245,779	—	245,779
Director share awards granted	—	20,383	—	20,383
Share repurchases	(9,124,729)	(205,026)	—	(9,329,755)
Balance - June 30, 2024	19,520,078	57,358,464	25,044,229	101,922,771

	Class A	Class B	Class C	Total
Balance - December 31, 2022	30,520,078	42,042,155	30,525,626	103,087,859
Vesting of awards	—	735,013	—	735,013
Director share awards granted	—	24,780	—	24,780
Share repurchases	—	(163,758)	—	(163,758)
Balance - June 30, 2023	30,520,078	42,638,190	30,525,626	103,683,894

On May 8, 2024, the Company entered into an agreement to repurchase 9,124,729 Class A common shares at $12.00 per share (the "Share Repurchase"). The total purchase price was $109.5 million. The common shares purchased by the Company were cancelled following the repurchase transaction.

In general, holders of Class A common shares and Class B common shares have one vote for each common share held while the Class C common shares have no voting rights, except as required by law. However, each holder of Class A common shares and Class B common shares is limited to voting (directly, indirectly or constructively, as determined for U.S. federal income tax purposes) that number of common shares equal to 9.5% of the total combined voting power of all classes of shares of the Company (or, in the case of a class vote by the holders of our Class B common shares, such as in respect of the election or removal of directors other than for directors who are appointed by certain shareholders pursuant to the Shareholders Agreement and our Bye-laws, a maximum of 14.92% of the total combined voting power). In addition, the Board of Directors may limit a shareholder’s voting rights when it deems it appropriate to do so to avoid certain material adverse tax, legal or regulatory consequences to the Company or any direct or indirect shareholder or its affiliates.

30

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

The Company Bye-laws provide for the automatic redesignation of shares upon any transfer, whether or not for value, from (i) Class A common shares to Class B common shares and from (ii) Class C common shares to Class B common shares. Upon notice from a Class A Member to the Company that certain Class B common shares are held by a Class A Member or a Permitted Transferee thereof, if so requested by the Class A Member and upon approval by a Simple Majority of the Board, such Class B common shares shall convert automatically into the same number of Class A common shares. The number of authorized and issued Class B common shares shall be reduced by the aggregate number of such issued Class B common shares so converted and the number of authorized and issued Class A common shares shall be correspondingly increased by the same amount. Upon notice from a Class A Member and/or Class B Member to the Company and upon approval by a Simple Majority of the Board, such consent not to be unreasonably withheld or unduly delayed, such Class A common shares and/or Class B common shares shall be redesignated as Class C common shares. In such instance, the authorized and issued number of Class A common shares and/or Class B common shares shall be reduced by the aggregate number of such shares so converted and the number of Class C common shares shall be correspondingly increased by the same amount. Upon notice from a Class C Member to the Company and upon approval of a Simple Majority of the Board, such consent not to be unreasonably withheld or unduly delayed, such Class C common shares shall be redesignated Class B common shares. In such instance, the authorized and issued number of Class C common shares shall be reduced by the aggregate number of such Class C common shares so converted and the number of authorized and issued Class B common shares shall be correspondingly increased by the same amount.

11. Earnings Per Share

The following table sets forth the computation of basic and diluted income (loss) per common share for the three and six months ended June 30, 2024 and 2023, respectively:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands, except per share information)	2024		2023		2024		2023
Numerator:
Net income (loss) attributable to common shareholders	$	131,085	$	36,787	$	288,259	$	88,279
Denominator:
Weighted average common shares outstanding - basic	105,909		103,732		108,416		103,714
Effect of dilutive securities	3,694		1,163		3,656		1,027
Weighted average common shares outstanding - diluted	109,603		104,895		112,072		104,741
Basic income (loss) per share attributable to common shareholders	$	1.24	$	0.35	$	2.66	$	0.85
Diluted income (loss) per share attributable to common shareholders	$	1.20	$	0.35	$	2.57	$	0.84

For the three and six months ended June 30, 2024, there were 0.3 million and 0.2 million common shares, respectively, available for issuance under share-based compensation plans that were excluded from the calculation of diluted income (loss) per share because the assumed exercise or issuance of such shares would be anti-dilutive.

For each of the three and six months ended June 30, 2023, there were no common shares available for issuance under share-based compensation plans that were excluded from the calculation of diluted income (loss) per share because the assumed exercise or issuance of such shares would be anti-dilutive.

31

Hamilton Insurance Group, Ltd.

Notes to the Unaudited Condensed Consolidated Financial Statements

12. Subsequent Events

On August 7, 2024, the Board of Directors authorized the repurchase of the Company's common shares in the aggregate amount of $150 million (“Authorization”). The Company may repurchase shares through open market repurchases and/or privately negotiated transactions. The Authorization will expire when the Company has repurchased the full value of shares authorized, unless terminated earlier by the Board of Directors.

32

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis should be read in conjunction with the "Selected Consolidated Financial Data" and our audited consolidated financial statements and related notes thereto included in the Group's Annual Report on Form 10-K for the year ended December 31, 2023 (the "Form 10-K"). In addition to historical information, this discussion contains forward-looking statements that involve risks, uncertainties and assumptions that could cause actual results to differ materially from management’s expectations. Factors that could cause such differences are discussed in the sections entitled "Special Note Regarding Forward-Looking Statements" in this Quarterly Report and "Risk Factors" included in the Form 10-K. We do not undertake any obligation to update any forward-looking statements or other statements we may make in the following discussion or elsewhere in this document even though these statements may be affected by events or circumstances occurring after the forward-looking statements or other statements were made.

33

Index To Management's Discussion and Analysis of Financial Condition and Results of Operations

	Page
Overview	35
Summary of Critical Accounting Estimates	37
Summary Results of Operations	38
Key Operating and Financial Metrics	65
Non-GAAP Measures	67
Financial Condition, Liquidity and Capital Resources	69
Financial Condition	69
Cash and Investments	69
Liquidity and Capital Resources	73
Financial Strength Ratings	78
Reserve for Losses and Loss Adjustment Expenses	78
Recent Accounting Pronouncements	79

34

Overview

We are a global specialty insurance and reinsurance company founded in Bermuda in 2013, enhanced by data and technology, focused on producing sustainable underwriting profitability and delivering significant shareholder value. We intend to continue growing our diverse book of business by responding to changing market conditions, prudently managing our capital, and driving sustainable shareholder returns.

We harness multiple drivers to create shareholder value, including diverse underwriting operations supported by proprietary technology and a team of over 550 full-time employees, a strong balance sheet, and a unique investment management relationship with Two Sigma. We operate globally, with underwriting operations in Lloyd’s, Ireland, Bermuda, and the United States.

We operate three principal underwriting platforms (Hamilton Global Specialty, Hamilton Select and Hamilton Re) that are categorized into two reporting business segments (International and Bermuda):

•International: International consists of business written out of our Lloyd’s syndicate and subsidiaries based in the United Kingdom, Ireland, and the United States, and includes the Hamilton Global Specialty and Hamilton Select platforms.

•Hamilton Global Specialty focuses predominantly on commercial specialty and casualty insurance for medium to large-sized accounts and specialty reinsurance products written by Lloyd’s Syndicate 4000 and HIDAC. Syndicate 4000, a leading Lloyd’s syndicate, generates a significant portion of premium from the U.S. E&S market and has ranked among the most profitable and least volatile syndicates at Lloyd’s over the last 10 years.

•Hamilton Select, our recently launched U.S. domestic E&S carrier, writes casualty insurance for small to mid-sized clients in the hard-to-place niche of the U.S. E&S market. We believe it presents meaningful and profitable growth opportunities in the near to long term, further expanding our footprint in the U.S. E&S market.

•Bermuda: Bermuda consists of the Hamilton Re platform, made up of Hamilton Re and Hamilton Re US. Hamilton Re writes property, casualty and specialty reinsurance business on a global basis and also offers high excess Bermuda market specialty insurance products, predominantly for large U.S. commercial risks. Hamilton Re US writes casualty and specialty reinsurance business on a global basis.

We seek to prudently manage our capital with the objective of effectively navigating different market conditions and generating strong underwriting margins throughout all market cycles. Our scaled and diversified platforms and product offerings and our broad industry relationships provide significant opportunity to underwrite our chosen classes of property, casualty and specialty insurance and reinsurance as market opportunities arise. Leveraging our disciplined underwriting approach, balance sheet strength and flexibility, and real-time technology prowess, we can respond dynamically to capture opportunities as markets evolve.

One of our key strategic priorities is sustainable underwriting profitability on the business we write. Our data-driven and disciplined underwriting processes position us to intelligently price and structure our products and our business portfolio. We maintain trusted and long-standing relationships with our clients and brokers, who we believe will continue to provide us with increased access to attractive business.

We see growth opportunities in both the insurance and reinsurance markets in which we operate and intend to pursue disciplined growth across our underwriting platforms. In recent years the E&S market has benefited from a strong rate environment and increased submissions as business has shifted into the non-admitted market from the admitted market. Non-admitted insurers are able to cover unique and hard-to-place risks because they have flexibility of rate and form and can accommodate the unique needs of insureds who are unable to obtain coverage from admitted carriers. We believe the access our three underwriting platforms have to U.S. E&S insurance business will allow us to build a robust and diversified book of business and achieve our profitable growth objectives throughout various market cycles.

35

Reinsurance business offers a particularly attractive opportunity given the continued favorable rating environment and discipline in the market and is expected to accelerate growth opportunities for us in the near term in many areas. A number of factors, including economic and social inflation and continued high interest rates are driving the most favorable market conditions seen in decades. We are a recognized market with deep client and broker relationships and have low counter-party credit concentration with many of our insurance partners, providing ample headroom for us to grow. We are well positioned to deploy capital quickly, efficiently and profitably through writing more reinsurance business, as well as retaining more of our own business.

Our strong, sustainable underwriting operations are complemented by our unique investment portfolio, which consists of the Two Sigma Hamilton Fund ("TS Hamilton Fund" or "TSHF"), and our investment grade fixed income portfolio, which is currently benefiting from strong interest rates. We plan to continue to optimize our investment portfolio through a balanced allocation of invested assets and maintain the flexibility to adjust this allocation as needed. We believe our strategy of disciplined underwriting growth, balanced with our investment platform, will drive our ability to create shareholder value.

We have a unique and long-term investment management relationship with Two Sigma. Founded in 2001, Two Sigma is a premier investment manager with a strong track record, driven by a differentiated application of technology and data science. The TS Hamilton Fund is a dedicated fund-of-one managed by Two Sigma with exposures to certain Two Sigma macro and equity strategies and is designed to provide low-correlated absolute returns, primarily by combining multiple hedged and leveraged systematic investment strategies with proprietary risk management investment optimization and execution techniques. The TS Hamilton Fund invests in a broad set of financial instruments and is primarily focused on liquid strategies in global equity, FX markets, exchange-listed and over the counter options (and their underlying instruments) and other derivatives. This liquidity profile fits well with our business, while also providing the benefit of access to a dedicated fund-of-one.

Two Sigma has broad discretion to allocate invested assets to different opportunities. Its current investments include Two Sigma Futures Portfolio, LLC ("FTV"), Two Sigma Spectrum Portfolio, LLC ("STV") and Two Sigma Equity Spectrum Portfolio, LLC ("ESTV"). The TS Hamilton Fund’s trading and investment activities are not limited to these strategies and techniques and the TS Hamilton Fund is permitted to pursue any investment strategy and/or technique that Two Sigma determines in its sole discretion to be appropriate for the TS Hamilton Fund from time to time.

Effects of Inflation

Historically, inflation has not had a material effect on the Company’s consolidated results of operations. However, global economic inflation has recently increased and there is a risk that it will remain elevated for an extended period. Inflation is subject to many macroeconomic factors beyond our control, including global banking policy, political risks, and supply chain issues. An inflationary economy may result in higher losses and loss adjustment expenses, negatively impact the performance of our fixed income security investment portfolio, or increase our operating expenses, among other unfavorable effects. The ultimate effects of an inflationary or deflationary period are subject to high uncertainty and cannot be accurately estimated until the actual costs are known.

In the wake of a catastrophe loss there is a risk of specific inflationary pressures in the local economy, which is considered in our catastrophe loss models. Similarly, the Company incorporates the anticipated effects of inflation in our ultimate estimate of the reserves for unpaid losses and loss adjustment expenses on certain long-tail lines of business. As with general economic inflation, the actual effects of inflation on reserves for losses and loss adjustment expenses and results of operations cannot be accurately known until all of the underlying claims are ultimately settled.

36

Taxes

On December 27, 2023, the Bermuda Government enacted a 15% corporate income tax that will generally become effective for Bermuda domiciled entities on or after January 1, 2025. The legislation defers the effective date until January 1, 2030 for so long as the consolidated group operates in six or fewer jurisdictions, has less than €50 million in tangible assets and none of its Bermuda entities are subject to the Income Inclusion Rule in any other jurisdiction. The act is a response to the OECD Pillar 2 worldwide minimum tax that would otherwise require a top-up tax be paid on Bermuda-sourced income to non-Bermuda jurisdictions such that a 15% minimum effective tax rate is achieved for Hamilton Group’s Bermuda entities. Hamilton Group expects to be exempt from the worldwide minimum tax until January 1, 2030, pursuant to an exemption similar to that available in Bermuda. The act includes a provision referred to as the economic transition adjustment, which is intended to provide a fair and equitable transition into the tax regime, and, as a result, the Company recorded a deferred tax benefit of $35.1 million in the year ended December 31, 2023.

Summary of Critical Accounting Estimates

Our critical accounting estimates include "Reserve for Losses and Loss Adjustment Expenses", "Premiums Written and Earned", "Ceded Reinsurance and Unpaid Losses and Loss Adjustment Expenses Recoverable", and "Fair Value of Investments" and are discussed in Management’s Discussion and Analysis of Financial Condition and Results of Operations in the Group’s Form 10-K for the year ended December 31, 2023. There have been no material changes to our critical accounting estimates as disclosed in the Form 10-K for the year ended December 31, 2023.

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Summary Results of Operations

Consolidated Results of Operations

The following is a comparison of selected data for our consolidated results of operations for the three months ended June 30, 2024 and 2023.

	For the Three Months Ended
($ in thousands, except per share amounts)	June 30, 2024			June 30, 2023
Gross premiums written	$	603,304		$	504,960
Net premiums written	$	475,068		$	384,708
Net premiums earned	$	418,764		$	331,460
Third party fee income(1)	5,989			2,449
Claims and Expenses
Losses and loss adjustment expenses	214,494			179,416
Acquisition costs	96,305			76,856
Other underwriting expenses(2)	48,655			42,743
Underwriting income (loss)(3)	65,299			34,894
Net realized and unrealized gains (losses) on investments	151,251			19,406
Net investment income (loss)(4)	13,720			7,291
Total net realized and unrealized gains (losses) on    investments and net investment income (loss)	164,971			26,697
Other income (loss), excluding third party fee income(1)	—			(29)
Net foreign exchange gains (losses)	(1,782)			(3,341)
Corporate expenses(2)	16,262			6,491
Amortization of intangible assets	3,317			2,305
Interest expense	6,031			5,189
Income tax expense (benefit)	2,496			2,948
Net income (loss)	200,382			41,288
Net income (loss) attributable to non-controlling interest(5)	69,297			4,501
Net income (loss) attributable to common shareholders	$	131,085		$	36,787
Diluted income (loss) per share attributable to common shareholders	$	1.20		$	0.35
Key Ratios
Attritional loss ratio - current year	51.6		%	51.0		%
Attritional loss ratio - prior year development	(0.4)		%	(1.6)		%
Catastrophe loss ratio - current year	0.0		%	5.0		%
Catastrophe loss ratio - prior year development	0.0		%	(0.3)		%
Loss and loss adjustment expense ratio	51.2		%	54.1		%
Acquisition cost ratio	23.0		%	23.2		%
Other underwriting expense ratio	10.2		%	12.2		%
Combined ratio	84.4		%	89.5		%
Return on average common shareholders' equity	5.9		%	2.1		%

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The following table summarizes book value per share and balance sheet data as at June 30, 2024 and March 31, 2024.

	As at
Book Value	June 30, 2024			March 31, 2024
Tangible book value per common share	$	21.04		$	19.07
Change in tangible book value per common share	10.3		%
Book value per common share	$	21.96		$	19.90
Change in book value per common share	10.4		%
Balance Sheet Data
Total assets	$	7,623,103		$	7,349,025
Total shareholders' equity	$	2,238,547		$	2,209,505

(1) Third party fee income is a non-GAAP financial measure as defined in Item 10(e) of SEC Regulation S-K. The reconciliation to other income (loss), the most comparable GAAP financial measure, also included other income (loss), excluding third party fee income of less than $0.1 million for each of the three months ended June 30, 2024 and 2023. Refer to 'Management’s Discussion and Analysis of Financial Condition and Results of Operations – Non-GAAP Measures' for further details.

(2) Other underwriting expenses is a non-GAAP financial measure as defined in Item 10(e) of SEC Regulation S-K. The reconciliation to general and administrative expenses, the most comparable GAAP financial measure, also included corporate expenses of $16.3 million, and $6.5 million for the three months ended June 30, 2024 and 2023, respectively. Refer to 'Management’s Discussion and Analysis of Financial Condition and Results of Operations – Non-GAAP Measures' for further details.

(3) Underwriting income (loss) is a non-GAAP financial measure as defined in Item 10(e) of SEC Regulation S-K. Refer to 'Management’s Discussion and Analysis of Financial Condition and Results of Operations – Non-GAAP Measures' for further details.

(4) Net investment income (loss) is presented net of investment management fees.

(5) Refer to 'Management’s Discussion and Analysis of Financial Condition and Results of Operations—Consolidated Results of Operations—Corporate and Other' for further details.

Operating Highlights

The following significant items impacted the consolidated results of operations for the three months ended June 30, 2024 and 2023:

Gross premiums written Gross premiums written were $603.3 million and $505.0 million for the three months ended June 30, 2024 and 2023, respectively. The increase in gross premiums written was primarily driven by our casualty and property reinsurance and casualty, specialty and property insurance classes. The increase was a result of new business, increased participations on existing business and a strong rate environment across multiple classes of business.

Underwriting results The combined ratio was 84.4% and 89.5% for the three months ended June 30, 2024 and 2023, respectively. The decrease was primarily driven by a decrease in the catastrophe loss ratio, other underwriting expense ratio, and acquisition cost ratio, partially offset by an increase in the attritional loss ratio.

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Losses and Loss Adjustment Expenses

	For the Three Months Ended
($ in thousands)	Current year		% of net premiums earned		Prior year development		% of net premiums earned		Losses and loss adjustment expenses		% of net premiums earned
June 30, 2024
Attritional losses	$	216,053	51.6	%	$	(1,591)	(0.4)	%	$	214,462	51.2	%
Catastrophe losses	—		0.0	%	32		0.0	%	32		0.0	%
Total	$	216,053	51.6	%	$	(1,559)	(0.4)	%	$	214,494	51.2	%
June 30, 2023
Attritional losses	$	169,177	51.0	%	$	(5,435)	(1.6)	%	$	163,742	49.4	%
Catastrophe losses	16,725		5.0	%	(1,051)		(0.3)	%	15,674		4.7	%
Total	$	185,902	56.0	%	$	(6,486)	(1.9)	%	$	179,416	54.1	%

Attritional loss ratio - current year for the three months ended June 30, 2024 was 51.6% compared to 51.0% for the three months ended June 30, 2023, an increase of 0.6 percentage points. The modest increase was primarily driven by a change in business mix, with no large losses for either the three months ended June 30, 2024 or 2023.

Attritional loss ratio - prior year for the three months ended June 30, 2024 was a favorable 0.4% compared to a favorable 1.6% for the three months ended June 30, 2023, an increase of 1.2 percentage points. The attritional loss ratio - prior year for the three months ended June 30, 2024 was primarily driven by favorable development in property classes in both our International and Bermuda segments, casualty classes in our International segment, and specialty classes in our Bermuda segment, partially offset by unfavorable development in specialty classes in our International segment. In addition, casualty business protected by the loss portfolio transfer ("LPT") discussed in Note 6, Reinsurance benefited from $1.0 million in amortization of the associated deferred gain, partially offset by unfavorable development in the underlying reserves of $0.2 million, for a total net positive earnings impact of $0.8 million. The attritional loss ratio - prior year for the three months ended June 30, 2023 was primarily driven by favorable development in property classes in our International segment and specialty classes in our Bermuda segment, partially offset by unfavorable development in specialty classes in our International segment and certain large losses in the Bermuda segment's property and specialty classes.

Catastrophe losses - current year and prior year development for the three months ended June 30, 2024 included $Nil current year losses and an insignificant movement on prior year. Catastrophe losses of $15.7 million for the three months ended June 30, 2023 were driven by severe convective storms in June 2023 ($14.6 million), the wind and thunderstorm events which impacted states in both the Southern and Midwest U.S. during March 2023 ($2.1 million), partially offset by favorable prior year development of $1.0 million.

Total Net Realized and Unrealized Gains (Losses) on Investments and Net Investment Income (Loss)

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Total net realized and unrealized gains (losses) on investments and net investment income (loss) - TSHF(1)	$	145,183	$	29,981
Total net realized and unrealized gains (losses) on investments and net investment income (loss) - other	19,788		(3,284)
	$	164,971	$	26,697
Net income (loss) attributable to non-controlling interest - TSHF	$	69,297	$	4,501

(1) Prior to non-controlling interest performance incentive allocation

40

Total net realized and unrealized gains (losses) on investments and net investment income (loss) - TSHF, prior to non-controlling interest, returned income of $145.2 million and $30.0 million for the three months ended June 30, 2024 and 2023, respectively. This includes the fund's returns, net of investment management fees.

Net investment income, net of non-controlling interest - TSHF, returned income of $75.9 million and $25.5 million for the three months ended June 30, 2024 and 2023, respectively. This includes the fund's returns, net of investment management fees and performance incentive allocations. The aggregate incentive allocation to which the investment manager is entitled is included in "Net income attributable to non-controlling interests" in our GAAP financial statements.

TS Hamilton Fund produced returns, net of investment management fees and performance incentive allocations, of 4.3% and 1.6% for the three months ended June 30, 2024 and 2023, respectively.

For the three months ended June 30, 2024, gains in TSHF were led by single name equities trading within Two Sigma Spectrum Portfolio, LLC ("STV") and Two Sigma Equity Spectrum Portfolio, LLC (“ESTV”). In single name equities trading, gains were led by U.S. equities within STV, followed by non-U.S. equities within ESTV. Within ESTV, East Asia, China, Europe and Pan-America all made positive contributions to gains. Macroeconomic trading in Two Sigma Futures Portfolio, LLC (“FTV”) also positively contributed to gains in TSHF. Within FTV, equities and currencies made positive contributions to gains, while losses were experienced in commodities, fixed income and credit.

For the three months ended June 30, 2023, gains in TSHF were led by non-U.S. single name equities trading within ESTV. Within ESTV, East Asia and Europe made positive contributions to gains, while losses were experienced in China and Pan America. U.S. single name equities trading within STV also positively contributed to gains. Macroeconomic trading in FTV also experienced gains, led primarily by equities.

Total net realized and unrealized gains (losses) on investments and net investment income (loss) - other, returned income of $19.8 million and a loss of $3.3 million for the three months ended June 30, 2024 and 2023, respectively. Income for the three months ended June 30, 2024 was primarily driven by investment income on higher yielding assets, partially offset by negative price returns as a result of rising U.S. treasury interest rates in the second quarter of 2024. Losses for the three months ended June 30, 2023 were primarily driven by negative price returns as a result of rising U.S. treasury interest rates, partially offset by investment income on higher yielding assets.

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Segment Information

We have determined our reportable business segments based on the information used by management in assessing performance and allocating resources to underwriting operations. We have identified two reportable business segments - International and Bermuda. Each of our identified reportable segments has a Chief Executive Officer who is responsible for the overall profitability of their segment and who regularly reports and is directly accountable to the chief operating decision maker: the Chief Executive Officer of the consolidated group.

We evaluate the performance of reportable segments based on their respective underwriting income or loss. Underwriting income or loss is calculated as net premiums earned less losses and loss adjustment expenses, acquisition costs, and other underwriting expenses (net of third party fee income). General and administrative expenses not incurred by the reportable segments are included in corporate and other expenses as part of the reconciliation of net underwriting income or loss to net income or loss attributable to common shareholders. As we do not manage our assets by reportable segment, investment income and assets are not allocated to reportable segments.

Our core business is underwriting and our underwriting results are reflected in our reportable segments: (1) International, which is comprised of property, casualty and specialty insurance and reinsurance classes of business originating from the Company’s London, Dublin, and Hamilton Select operations; and (2) Bermuda, which is comprised of property, casualty and specialty insurance and reinsurance classes of business originating from Hamilton Re, Bermuda and Hamilton Re US and subsidiaries. We consider many factors, including the nature of each segment’s products, client types, production sources, distribution methods and the regulatory environment, in determining the aggregated operating segments.

Corporate includes net realized and unrealized gains (losses) on investments, net investment income (loss), other income (loss) not incurred by the reportable segments, net foreign exchange gains (losses), general and administrative expenses not incurred by the reportable segments, amortization of intangible assets, interest expense, and income tax expense (benefit).

42

International Segment

	For the Three Months Ended
($ in thousands)	June 30, 2024			June 30, 2023
Gross premiums written	$	311,616		$	277,796
Net premiums written	$	234,305		$	197,047
Net premiums earned	$	215,643		$	176,636
Third party fee income	3,798			2,401
Claims and Expenses
Losses and loss adjustment expenses	112,884			87,575
Acquisition costs	53,157			47,260
Other underwriting expenses	33,972			29,540
Underwriting income (loss)	$	19,428		$	14,662
Attritional losses - current year	$	113,400		$	93,523
Attritional losses - prior year development	(521)			(5,908)
Catastrophe losses - current year	—			1,500
Catastrophe losses - prior year development	5			(1,540)
Losses and loss adjustment expenses	$	112,884		$	87,575
Attritional loss ratio - current year	52.5		%	52.9		%
Attritional loss ratio - prior year development	(0.2)		%	(3.3)		%
Catastrophe loss ratio - current year	0.0		%	0.9		%
Catastrophe loss ratio - prior year development	0.0		%	(0.9)		%
Losses and loss adjustment expense ratio	52.3		%	49.6		%
Acquisition cost ratio	24.7		%	26.8		%
Other underwriting expense ratio	14.0		%	15.4		%
Combined ratio	91.0		%	91.8		%

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Gross Premiums Written

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Property	$	53,540	$	43,188
Casualty	132,129		119,846
Specialty	125,947		114,762
Total	$	311,616	$	277,796

Gross premiums written increased by $33.8 million, or 12.2%, from $277.8 million for the three months ended June 30, 2023 to $311.6 million for the three months ended June 30, 2024, primarily driven by growth, improved pricing and new business in specialty, casualty and property insurance classes.

Net Premiums Earned

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Property	$	32,689	$	25,452
Casualty	75,770		70,826
Specialty	107,184		80,358
Total	$	215,643	$	176,636

Net premiums earned increased by $39.0 million, or 22.1%, from $176.6 million for the three months ended June 30, 2023 to $215.6 million for the three months ended June 30, 2024, primarily driven by growth in specialty and property insurance classes. Specialty insurance growth was driven by accident & health, fine art & specie, political violence and marine & energy. Property insurance growth was driven by property binders and D&F.

Third Party Fee Income

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Third party fee income	$	3,798	$	2,401

Third party fee income increased by $1.4 million, or 58.2%, from $2.4 million for the three months ended June 30, 2023 to $3.8 million for the three months ended June 30, 2024. The increase was primarily due to more favorable terms of a renewed syndicate management arrangement and an increase in consortium fees.

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Losses and Loss Adjustment Expenses

	For the Three Months Ended
($ in thousands)	Current year		% of net premiums earned		Prior year development		% of net premiums earned		Losses and loss adjustment expenses		% of net premiums earned
June 30, 2024
Attritional losses	$	113,400	52.5	%	$	(521)	(0.2)	%	$	112,879	52.3	%
Catastrophe losses	—		0.0	%	5		0.0	%	5		0.0	%
Total	$	113,400	52.5	%	$	(516)	(0.2)	%	$	112,884	52.3	%
June 30, 2023
Attritional losses	$	93,523	52.9	%	$	(5,908)	(3.3)	%	$	87,615	49.6	%
Catastrophe losses	1,500		0.9	%	(1,540)		(0.9)	%	(40)		0.0	%
Total	$	95,023	53.8	%	$	(7,448)	(4.2)	%	$	87,575	49.6	%

The loss ratio for the three months ended June 30, 2024 was 52.3%, compared to 49.6% for the three months ended June 30, 2023, an increase of 2.7 percentage points. The increase was primarily as a result of modest favorable prior year attritional and catastrophe loss development of 0.2% for the three months ended June 30, 2024, compared to favorable prior year attritional and catastrophe loss development of 4.2% for the three months ended June 30, 2023.

Attritional loss ratio - current year for the three months ended June 30, 2024 was 52.5% compared to 52.9% for the three months ended June 30, 2023, a decrease of 0.4 percentage points.

Attritional loss ratio - prior year for the three months ended June 30, 2024 was a favorable 0.2% compared to a favorable 3.3% for the three months ended June 30, 2023, an increase of 3.1 percentage points. The favorable attritional loss ratio - prior year was primarily driven by modest favorable development in property insurance and reinsurance classes, partially offset by unfavorable development in specialty classes. In addition, casualty business protected by the loss portfolio transfer ("LPT") discussed in Note 6, Reinsurance benefited from $1.0 million in amortization of the associated deferred gain, partially offset by unfavorable development in the underlying reserves of $0.2 million, for a total net positive earnings impact of $0.8 million.

Catastrophe losses - current year and prior year for the three months ended June 30, 2024 included $Nil current year losses and an insignificant movement on prior year. Catastrophe losses - current year and prior year of less than $0.1 million for the three months ended June 30, 2023 were primarily driven by the severe convective storms in June 2023 ($1.5 million) offset by favorable prior year development of $1.5 million.

Acquisition Costs

	For the Three Months Ended
	Acquisition Costs				% of Net Premiums Earned
($ in thousands)	June 30, 2024		June 30, 2023		June 30, 2024		June 30, 2023		'24 vs '23 point r
Property	$	10,854	$	8,264	33.2	%	32.5	%	0.7
Casualty	12,470		16,076		16.5	%	22.7	%	(6.2)
Specialty	29,833		22,920		27.8	%	28.5	%	(0.7)
Total	$	53,157	$	47,260	24.7	%	26.8	%	(2.1)

For the three months ended June 30, 2024, the acquisition cost ratio was 24.7%, compared to 26.8% for the three months ended June 30, 2023, a decrease of 2.1 percentage points. The decrease was primarily driven by casualty insurance, as a result of a change in the business mix and non-recurring profit commissions recorded in the three months ended June 30, 2023.

45

Other Underwriting Expenses and Other Underwriting Expense Ratios

	For the Three Months Ended
($ in thousands)	June 30, 2024			June 30, 2023
Other underwriting expenses	$	33,972		$	29,540
Other underwriting expense ratio	14.0		%	15.4		%

Other underwriting expenses are general and administrative costs incurred by our reportable segments.

Other underwriting expenses for the three months ended June 30, 2024 were $34.0 million, an increase of $4.4 million, or 15.0%, compared to $29.5 million for the three months ended June 30, 2023. The increase was primarily driven by increased headcount as we built out underwriting teams supporting the corresponding increase in premium volume.

The other underwriting expense ratio for the three months ended June 30, 2024 and 2023 decreased from 15.4% to 14.0%, as a result of the growth in the premium base.

46

Bermuda Segment

	For the Three Months Ended
($ in thousands)	June 30, 2024			June 30, 2023
Gross premiums written	$	291,688		$	227,164
Net premiums written	$	240,763		$	187,661
Net premiums earned	$	203,121		$	154,824
Third party fee income	2,191			48
Claims and Expenses
Losses and loss adjustment expenses	101,610			91,841
Acquisition costs	43,148			29,596
Other underwriting expenses	14,683			13,203
Underwriting income (loss)	$	45,871		$	20,232
Attritional losses - current year	$	102,653		$	75,654
Attritional losses - prior year development	(1,070)			473
Catastrophe losses - current year	—			15,225
Catastrophe losses - prior year development	27			489
Losses and loss adjustment expenses	$	101,610		$	91,841
Attritional loss ratio - current year	50.5		%	48.9		%
Attritional loss ratio - prior year development	(0.5)		%	0.3		%
Catastrophe loss ratio - current year	0.0		%	9.8		%
Catastrophe loss ratio - prior year development	0.0		%	0.3		%
Losses and loss adjustment expense ratio	50.0		%	59.3		%
Acquisition cost ratio	21.2		%	19.1		%
Other underwriting expense ratio	6.2		%	8.5		%
Combined ratio	77.4		%	86.9		%

Gross Premiums Written

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Property	$	135,021	$	111,487
Casualty	123,498		87,993
Specialty	33,169		27,684
Total	$	291,688	$	227,164

For the three months ended June 30, 2024, gross premiums written increased by $64.5 million, or 28.4%, from $227.2 million for the three months ended June 30, 2023 to $291.7 million for the three months ended June 30, 2024. The increase was primarily driven by new business, increased participations and a strong rate environment in both our casualty reinsurance and property reinsurance classes.

47

Net Premiums Earned

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Property	$	73,864	$	56,326
Casualty	99,467		69,613
Specialty	29,790		28,885
Total	$	203,121	$	154,824

For the three months ended June 30, 2024, the Bermuda segment's net premiums earned increased by $48.3 million, or 31.2%, from $154.8 million for the three months ended June 30, 2023 to $203.1 million for the three months ended June 30, 2024. The increase was primarily driven by new business, volume growth and rate increases in casualty and property reinsurance. The most significant drivers of the increase were general liability, professional lines and property treaty classes.

Third Party Fee Income

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Third party fee income	$	2,191	$	48

Third party fee income increased by $2.1 million, from less than $0.1 million for the three months ended June 30, 2023 to $2.2 million for the three months ended June 30, 2024. The increase was primarily driven by certain performance based management fees recognized by Ada Capital Management Limited for services provided to Ada Re, Ltd.

Losses and Loss Adjustment Expenses

	For the Three Months Ended
($ in thousands)	Current year		% of net premiums earned		Prior year development		% of net premiums earned		Losses and loss adjustment expenses		% of net premiums earned
June 30, 2024
Attritional losses	$	102,653	50.5	%	$	(1,070)	(0.5)	%	$	101,583	50.0	%
Catastrophe losses	—		0.0	%	27		0.0	%	27		0.0	%
Total	$	102,653	50.5	%	$	(1,043)	(0.5)	%	$	101,610	50.0	%
June 30, 2023
Attritional losses	$	75,654	48.9	%	$	473	0.3	%	$	76,127	49.2	%
Catastrophe losses	15,225		9.8	%	489		0.3	%	15,714		10.1	%
Total	$	90,879	58.7	%	$	962	0.6	%	$	91,841	59.3	%

The loss ratio for the three months ended June 30, 2024 was 50.0%, compared to 59.3% for the three months ended June 30, 2023, a decrease of 9.3 percentage points. The decrease was primarily driven by lower catastrophe losses for the three months ended June 30, 2024.

Attritional loss ratio - current year for the three months ended June 30, 2024 was 50.5% compared to 48.9% for the three months ended June 30, 2023, an increase of 1.6 percentage points. The increase was primarily driven by a change in business mix, including more proportional business, with no large losses for either the three months ended June 30, 2024 or 2023.

48

Attritional loss ratio - prior year for the three months ended June 30, 2024 was a favorable 0.5%, compared to an unfavorable 0.3% for the three months ended June 30, 2023, a decrease of 0.8 percentage points. The favorable attritional loss ratio - prior year is primarily driven by modest favorable development across property and specialty classes.

Catastrophe losses - current year and prior year for the three months ended June 30, 2024 included $Nil current year losses and an insignificant movement on prior year. Catastrophe losses - current year and prior year of $15.7 million for the three months ended June 30, 2023 were primarily driven by severe convective storms in June 2023 ($13.1 million), wind and thunderstorm events which impacted states in both the Southern and Midwest U.S. during March 2023 ($2.1 million), in addition to unfavorable prior year development of $0.5 million.

Acquisition Costs

	For the Three Months Ended
	Acquisition Costs				% of Net Premiums Earned
($ in thousands)	June 30, 2024		June 30, 2023		June 30, 2024		June 30, 2023		'24 vs '23 point r
Property	$	9,510	$	6,888	12.9	%	12.2	%	0.7
Casualty	25,545		15,025		25.7	%	21.6	%	4.1
Specialty	8,093		7,683		27.2	%	26.6	%	0.6
Total	$	43,148	$	29,596	21.2	%	19.1	%	2.1

The acquisition cost ratio for the three months ended June 30, 2024 increased to 21.2%, compared to 19.1% for the three months ended June 30, 2023, reflecting the change in the mix of business, including more proportional business written in our casualty reinsurance classes.

Other Underwriting Expenses and Other Underwriting Expense Ratios

	For the Three Months Ended
($ in thousands)	June 30, 2024			June 30, 2023
Other underwriting expenses	$	14,683		$	13,203
Other underwriting expense ratio	6.2		%	8.5		%

Other underwriting expenses are general and administrative costs incurred by our reportable segments.

For the three months ended June 30, 2024, other underwriting expenses increased by $1.5 million or 11.2%, from $13.2 million for the three months ended June 30, 2023 to $14.7 million for the three months ended June 30, 2024. The increase was primarily driven by an increase in salary and compensation costs and professional fees.

The other underwriting expense ratios for the three months ended June 30, 2024 and 2023 decreased over the same period from 8.5% for the three months ended June 30, 2023 to 6.2% for the three months ended June 30, 2024, primarily as a result of the growth in premium base and certain performance based management fees recognized by Ada Capital Management Limited in the current quarter for services provided to Ada Re, Ltd.

49

Corporate and Other

Total Net Realized and Unrealized Gains (Losses) on Investments and Net Investment Income (Loss)

The components of total net realized and unrealized gains (losses) on investments and net investment income (loss) are as follows:

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Total net realized and unrealized gains (losses) on investments and net investment income (loss) - TSHF(1)	$	145,183	$	29,981
Total net realized and unrealized gains (losses) on investments and net investment income (loss) - other	19,788		(3,284)
	$	164,971	$	26,697
Net income (loss) attributable to non-controlling interest - TSHF	$	69,297	$	4,501

(1) Prior to non-controlling interest performance incentive allocation

Total net realized and unrealized gains (losses) on investments and net investment income (loss) - TSHF, prior to non-controlling interest, returned income of $145.2 million and $30.0 million for the three months ended June 30, 2024 and 2023, respectively. This includes the fund's returns, net of investment management fees.

Net investment income, net of non-controlling interest - TSHF, returned income of $75.9 million and $25.5 million for the three months ended June 30, 2024 and 2023, respectively. This includes the fund's returns, net of investment management fees and performance incentive allocations. The aggregate incentive allocation to which the investment manager is entitled is included in "Net income attributable to non-controlling interests" in our GAAP financial statements.

TS Hamilton Fund produced returns, net of investment management fees and performance incentive allocations, of 4.3% and 1.6% for the three months ended June 30, 2024 and 2023, respectively.

For the three months ended June 30, 2024, gains in TSHF were led by single name equities trading within STV and ESTV. In single name equities trading, gains were led by U.S. equities within STV, followed by non-U.S. equities within ESTV. Within ESTV, East Asia, China, Europe and Pan-America all made positive contributions to gains. Macroeconomic trading in FTV also positively contributed to gains in TSHF. Within FTV, equities and currencies made positive contributions to gains, while losses were experienced in commodities, fixed income and credit.

For the three months ended June 30, 2023, gains in TSHF were led by non-U.S. single name equities trading within ESTV. Within ESTV, East Asia and Europe made positive contributions to gains, while losses were experienced in China and Pan America. U.S. single name equities trading within STV also positively contributed to gains. Macroeconomic trading in FTV also experienced gains, led primarily by equities.

Total net realized and unrealized gains (losses) on investments and net investment income (loss) - other, returned income of $19.8 million and a loss of $3.3 million for the three months ended June 30, 2024 and 2023, respectively. Income for the three months ended June 30, 2024 was primarily driven by investment income on higher yielding assets, partially offset by negative price returns as a result of rising U.S. treasury interest rates in the second quarter of 2024. Losses for the three months ended June 30, 2023 were primarily driven by negative price returns as a result of rising U.S. treasury interest rates, partially offset by investment income on higher yielding assets.

50

Other Income (Loss)

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Other income (loss), excluding third party fee income	$	—	$	(29)

Other income (loss), excluding third party fee income, consists of varying insignificant items in each period.

Net Foreign Exchange Gains (Losses)

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Net foreign exchange gains (losses)	$	(1,782)	$	(3,341)

Our functional currency is the U.S. Dollar. We may conduct routine underwriting operations or invest a portion of our cash and other investable assets in currencies other than U.S. Dollars. Consequently, we may incur foreign exchange gains and losses in our results of operations.

Foreign exchange losses of $1.8 million and $3.3 million for the three months ended June 30, 2024 and 2023, respectively, primarily related to the remeasurement of insurance-related assets and liabilities denominated in British Pounds, Euro, Japanese Yen, and Australian and Canadian Dollars.

Corporate Expenses

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Corporate expenses	$	16,262	$	6,491

Corporate expenses for the three months ended June 30, 2024 were $16.3 million, compared to $6.5 million for the three months ended June 30, 2023, an increase of $9.8 million. The increase was primarily driven by $2.5 million of Value Appreciation Pool ("VAP") expense, certain variable performance based compensation costs, an increased headcount and an increase in professional fees associated with operating as a public company.

Amortization of Intangible Assets

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Amortization of intangible assets	$	3,317	$	2,305

Amortization of intangible assets of $3.3 million and $2.3 million for the three months ended June 30, 2024 and 2023, respectively, relates to internally developed software and intangible assets acquired in a business combination. Amortization expense increased due to the incremental expense associated with additional technology projects.

51

Interest Expense

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Interest expense	$	6,031	$	5,189

Interest expense of $6.0 million and $5.2 million for the three months ended June 30, 2024 and 2023, respectively, relates to interest payments and certain administrative fees associated with our term loan and letter of credit facilities. The increase in interest expense is primarily driven by the increase in the Secured Overnight Financing Rate ("SOFR"), which underlies the floating rate associated with the term loan.

Income Tax Expense (Benefit)

	For the Three Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Income tax expense (benefit)	$	2,496	$	2,948

Income tax expense for the three months ended June 30, 2024 was an expense of $2.5 million, compared to an expense of $2.9 million for the three months ended June 30, 2023, a decrease of $0.5 million. Tax expense for both the three months ended June 30, 2024 and 2023 is primarily driven by withholding taxes on investment income from TS Hamilton Fund.

52

Consolidated Results of Operations

The following is a comparison of selected data for our consolidated results of operations for the six months ended June 30, 2024 and 2023.

	For the Six Months Ended
($ in thousands, except per share amounts)	June 30, 2024			June 30, 2023
Gross premiums written	$	1,325,245		$	1,043,124
Net premiums written	$	989,948		$	733,206
Net premiums earned	$	804,067		$	615,362
Third party fee income(1)	13,470			5,452
Claims and Expenses
Losses and loss adjustment expenses	446,846			327,977
Acquisition costs	180,858			141,995
Other underwriting expenses(2)	92,008			81,886
Underwriting income (loss)(3)	97,825			68,956
Net realized and unrealized gains (losses) on investments	406,622			54,539
Net investment income (loss)(4)	26,338			9,650
Total net realized and unrealized gains (losses) on    investments and net investment income (loss)	432,960			64,189
Other income (loss), excluding third party fee income(1)	—			—
Net foreign exchange gains (losses)	(3,911)			(5,387)
Corporate expenses(2)	27,764			13,154
Amortization of intangible assets	6,569			5,075
Interest expense	11,738			10,718
Income tax expense (benefit)	3,089			4,521
Net income (loss)	477,714			94,290
Net income (loss) attributable to non-controlling interest(5)	189,455			6,011
Net income (loss) attributable to common shareholders	$	288,259		$	88,279
Diluted income (loss) per share attributable to common shareholders	$	2.57		$	0.84
Key Ratios
Attritional loss ratio - current year	54.3		%	50.1		%
Attritional loss ratio - prior year development	1.3		%	(0.6)		%
Catastrophe loss ratio - current year	0.0		%	3.6		%
Catastrophe loss ratio - prior year development	0.0		%	0.2		%
Loss and loss adjustment expense ratio	55.6		%	53.3		%
Acquisition cost ratio	22.5		%	23.1		%
Other underwriting expense ratio	9.8		%	12.4		%
Combined ratio	87.9		%	88.8		%
Return on average common shareholders' equity	13.4		%	5.2		%

53

The following table summarizes book value per share and balance sheet data as at June 30, 2024 and December 31, 2023.

	As at
Book Value	June 30, 2024			December 31, 2023
Tangible book value per common share	$	21.04		$	17.75
Change in tangible book value per common share	18.5		%
Book value per common share	$	21.96		$	18.58
Change in book value per common share	18.2		%
Balance Sheet Data
Total assets	$	7,623,103		$	6,671,355
Total shareholders' equity	$	2,238,547		$	2,047,850

(1) Third party fee income is a non-GAAP financial measure as defined in Item 10(e) of SEC Regulation S-K. The reconciliation to other income (loss), the most comparable GAAP financial measure, also included other income (loss), excluding third party fee income of $Nil for each of the six months ended June 30, 2024 and 2023. Refer to "Management’s Discussion and Analysis of Financial Condition and Results of Operations – Non-GAAP Measures" for further details.

(2) Other underwriting expenses is a non-GAAP financial measure as defined in Item 10(e) of SEC Regulation S-K. The reconciliation to general and administrative expenses, the most comparable GAAP financial measure, also included corporate expenses of $27.8 million and $13.2 million for the six months ended June 30, 2024 and 2023, respectively. Refer to "Management’s Discussion and Analysis of Financial Condition and Results of Operations – Non-GAAP Measures" for further details.

(3) Underwriting income (loss) is a non-GAAP financial measure as defined in Item 10(e) of SEC Regulation S-K. Refer to "Management’s Discussion and Analysis of Financial Condition and Results of Operations – Non-GAAP Measures"' for further details.

(4) Net investment income (loss) is presented net of investment management fees.

(5) Refer to "Management’s Discussion and Analysis of Financial Condition and Results of Operations—Consolidated Results of Operations—Corporate and Other" for further details.

Operating Highlights

The following significant items impacted the consolidated results of operations for the six months ended June 30, 2024 and 2023:

Gross premiums written Gross premiums written were $1.3 billion and $1.0 billion for the six months ended June 30, 2024 and 2023, respectively. The increase in gross premiums written was primarily driven by our property reinsurance, specialty reinsurance and casualty insurance and reinsurance business. The growth was a result of new business, increased participations on existing business and a strong rate environment across multiple classes of business.

Underwriting results The combined ratio was 87.9% and 88.8% for the six months ended June 30, 2024 and 2023, respectively. The decrease was largely driven by a decrease in the catastrophe loss ratio, other underwriting expense ratio and acquisition cost ratio, partially offset by an increase in the attritional loss ratio.

54

Losses and Loss Adjustment Expenses

	For the Six Months Ended
($ in thousands)	Current year		% of net premiums earned		Prior year development		% of net premiums earned		Losses and loss adjustment expenses		% of net premiums earned
June 30, 2024
Attritional losses	$	436,348	54.3	%	$	10,301	1.3	%	$	446,649	55.6	%
Catastrophe losses	—		—	%	197		—	%	197		—	%
Total	$	436,348	54.3	%	$	10,498	1.3	%	$	446,846	55.6	%
June 30, 2023
Attritional losses	$	308,452	50.1	%	$	(3,638)	(0.6)	%	$	304,814	49.5	%
Catastrophe losses	22,006		3.6	%	1,157		0.2	%	23,163		3.8	%
Total	$	330,458	53.7	%	$	(2,481)	(0.4)	%	$	327,977	53.3	%

Attritional loss ratio - current year for the six months ended June 30, 2024 was 54.3% compared to 50.1% for the six months ended June 30, 2023, an increase of 4.2 percentage points. The increase is primarily driven by losses of $37.9 million arising from the Francis Scott Key Baltimore Bridge collapse, which impacted our insurance and reinsurance classes in both our International and Bermuda segments.

Attritional loss ratio - prior year for the six months ended June 30, 2024 was an unfavorable 1.3% compared to favorable 0.6% for the six months ended June 30, 2023, an increase of 1.9 percentage points. The unfavorable attritional loss ratio - prior year for the six months ended June 30, 2024 was primarily driven by unfavorable development in specialty classes in both our International and Bermuda segments, primarily related to two specific large losses, partially offset by favorable development in our International property insurance and reinsurance classes. In addition, casualty business protected by the LPT benefited from $1.9 million in amortization of the associated deferred gain, partially offset by unfavorable development in the underlying reserves of $0.3 million, for a total net positive earnings impact of $1.6 million. The attritional loss ratio - prior year for the six months ended June 30, 2023 was primarily driven by favorable prior year development in specialty classes in the Bermuda segment and property classes in the International segment, partially offset by unfavorable development in our Bermuda property and casualty classes.

Catastrophe losses - current year and prior year development were $0.2 million and $23.2 million for the six months ended June 30, 2024 and 2023, respectively. Catastrophe losses for the six months ended June 30, 2024 included $Nil current year losses and an insignificant movement on prior year. Catastrophe losses (current and prior year development) for the six months ended June 30, 2023 were driven by severe convective storms in June 2023 ($14.6 million), the wind and thunderstorm events which impacted states in both the Southern and Midwest U.S. during March 2023 ($7.4 million), and unfavorable prior year development of $1.2 million.

Total Net Realized and Unrealized Gains (Losses) on Investments and Net Investment Income (Loss)

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Total net realized and unrealized gains (losses) on investments and net investment income (loss) - TSHF(1)	$	408,002	$	40,045
Total net realized and unrealized gains (losses) on investments and net investment income (loss) - other	24,958		24,144
	$	432,960	$	64,189
Net income (loss) attributable to non-controlling interest - TSHF	$	189,455	$	6,011

(1) Prior to non-controlling interest performance incentive allocation

55

Total net realized and unrealized gains (losses) on investments and net investment income (loss) - TSHF, prior to non-controlling interest, returned income of $408.0 million and $40.0 million for the six months ended June 30, 2024 and 2023, respectively. This includes the fund's returns, net of investment management fees.

Net investment income, net of non-controlling interest - TSHF, net of non-controlling interest, returned income of $218.5 million and $34.0 million for the six months ended June 30, 2024 and 2023, respectively. This includes the fund's returns, net of investment management fees and performance incentive allocations. The aggregate incentive allocation to which the investment manager is entitled is included in "Net income attributable to non-controlling interests" in our GAAP financial statements.

TS Hamilton Fund produced returns, net of investment management fees and performance incentive allocations, of 12.9% and 2.1% for the six months ended June 30, 2024 and 2023, respectively.

For the six months ended June 30, 2024, gains in TSHF were led by macroeconomic trading in FTV. Within FTV, gains were achieved in equities, fixed income, commodities, and currencies while losses were experienced in credit. TSHF also saw gains from single name equities trading within STV and ESTV. In single name equities trading, gains were led by U.S. equities within STV, followed by non-U.S. equities within ESTV. Within ESTV, East Asia, Europe, China, and Pan-America all made positive contributions to gains.

For the six months ended June 30, 2023, TSHF received positive contributions from single name equities trading which was partially offset by losses experienced from macroeconomic trading in FTV. In STV and ESTV, both non-U.S. and U.S. portfolios have contributed positively. In FTV, losses were driven by fixed income and commodities, with equities and currencies trading contributing positive results.

Total net realized and unrealized gains (losses) on investments and net investment income (loss) - other returned income of $25.0 million and $24.1 million for the six months ended June 30, 2024 and 2023, respectively. The returns are primarily driven by investment income on higher yielding assets, partially offset by negative price returns as a result of rising U.S. treasury interest rates in the year to date.

56

International Segment

	For the Six Months Ended
($ in thousands)	June 30, 2024			June 30, 2023
Gross premiums written	$	632,457		$	524,909
Net premiums written	$	419,338		$	319,067
Net premiums earned	$	412,456		$	326,151
Third party fee income	7,387			5,302
Claims and Expenses
Losses and loss adjustment expenses	229,046			157,967
Acquisition costs	100,876			84,452
Other underwriting expenses	65,174			58,002
Underwriting income (loss)	$	24,747		$	31,032
Attritional losses - current year	$	223,598		$	168,153
Attritional losses - prior year development	5,251			(12,241)
Catastrophe losses - current year	—			1,500
Catastrophe losses - prior year development	197			555
Losses and loss adjustment expenses	$	229,046		$	157,967
Attritional loss ratio - current year	54.2		%	51.6		%
Attritional loss ratio - prior year development	1.3		%	(3.8)		%
Catastrophe loss ratio - current year	0.0		%	0.4		%
Catastrophe loss ratio - prior year development	0.0		%	0.2		%
Losses and loss adjustment expense ratio	55.5		%	48.4		%
Acquisition cost ratio	24.5		%	25.9		%
Other underwriting expense ratio	14.0		%	16.2		%
Combined ratio	94.0		%	90.5		%

Gross Premiums Written

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Property	$	91,244	$	67,096
Casualty	253,294		212,427
Specialty	287,919		245,386
Total	$	632,457	$	524,909

Gross premiums written increased by $107.5 million, or 20.5%, from $524.9 million for the six months ended June 30, 2023 to $632.5 million for the six months ended June 30, 2024, primarily driven by growth, improved pricing and new business in casualty insurance, specialty insurance and reinsurance and property insurance classes.

57

Net Premiums Earned

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Property	$	67,664	$	48,369
Casualty	148,698		128,321
Specialty	196,094		149,461
Total	$	412,456	$	326,151

For the six months ended June 30, 2024, net premiums earned increased by $86.3 million, or 26.5%, from $326.2 million for the six months ended June 30, 2023 to $412.5 million for the six months ended June 30, 2024. The increase was primarily driven by growth in our specialty insurance classes, in addition to growth in property and casualty insurance classes and specialty reinsurance. Specialty insurance growth was driven by accident & health, fine art & specie, political violence and marine & energy; property insurance growth was driven by property binders and D&F; casualty insurance growth was primarily driven by U.S. excess and surplus lines, professional lines and excess casualty; and specialty reinsurance growth was primarily attributable to treaty reinsurance and surety reinsurance.

Third Party Fee Income

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Third party fee income	$	7,387	$	5,302

For the six months ended June 30, 2024, fee income increased by $2.1 million, or 39.3%, from $5.3 million for the six months ended June 30, 2023 to $7.4 million for the six months ended June 30, 2024. The increase was primarily due to more favorable terms of a renewed syndicate management arrangement and an increase in consortium fees.

Losses and Loss Adjustment Expenses

	For the Six Months Ended
($ in thousands)	Current year		% of net premiums earned		Prior year development		% of net premiums earned		Losses and loss adjustment expenses		% of net premiums earned
June 30, 2024
Attritional losses	$	223,598	54.2	%	$	5,251	1.3	%	$	228,849	55.5	%
Catastrophe losses	—		0.0	%	197		0.0	%	197		0.0	%
Total	$	223,598	54.2	%	$	5,448	1.3	%	$	229,046	55.5	%
June 30, 2023
Attritional losses	$	168,153	51.6	%	$	(12,241)	(3.8)	%	$	155,912	47.8	%
Catastrophe losses	1,500		0.4	%	555		0.2	%	2,055		0.6	%
Total	$	169,653	52.0	%	$	(11,686)	(3.6)	%	$	157,967	48.4	%

The loss ratio for the six months ended June 30, 2024 was 55.5%, compared to 48.4% for the six months ended June 30, 2023, an increase of 7.1 percentage points. The increase was driven by higher current year attritional losses and unfavorable prior year attritional loss development for the six months ended June 30, 2024, partially offset by a lower level of catastrophe losses for the six months ended June 30, 2024.

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Attritional loss ratio - current year for the six months ended June 30, 2024 was 54.2% compared to 51.6% for the six months ended June 30, 2023, an increase of 2.6 percentage points. The increase in the current year attritional loss ratio was primarily driven by $11.8 million of losses arising from the Baltimore Bridge collapse, which impacted our insurance and reinsurance classes, with no comparable large losses for the six months ended June 30, 2023.

Attritional loss ratio - prior year for the six months ended June 30, 2024 was an unfavorable 1.3% compared to a favorable 3.8% for the six months ended June 30, 2023, a decrease of 5.1 percentage points. The unfavorable attritional loss ratio - prior year for the six months ended June 30, 2024 is primarily driven by unfavorable development on two large losses in our specialty insurance class, partially offset by favorable development in our property insurance and reinsurance classes. In addition, casualty business protected by the LPT benefited from $1.9 million in amortization of the associated deferred gain, partially offset by unfavorable development in the underlying reserves of $0.3 million, for a total net positive earnings impact of $1.6 million.

Catastrophe losses - current year and prior year of $0.2 million for the six months ended June 30, 2024 were driven by modest unfavorable prior year development of $0.2 million. Catastrophe losses - current year and prior year of $2.1 million for the six months ended June 30, 2023 were primarily driven by the severe convective storms in June 2023 of $1.5 million and unfavorable prior year development of $0.6 million.

Acquisition Costs

	For the Six Months Ended
	Acquisition Costs				% of Net Premiums Earned
($ in thousands)	June 30, 2024		June 30, 2023		June 30, 2024		June 30, 2023		'24 vs '23 point r
Property	$	22,389	$	16,469	33.1	%	34.0	%	(0.9)
Casualty	22,212		22,896		14.9	%	17.8	%	(2.9)
Specialty	56,275		45,087		28.7	%	30.2	%	(1.5)
Total	$	100,876	$	84,452	24.5	%	25.9	%	(1.4)

The acquisition cost ratio for the six months ended June 30, 2024 was 24.5%, compared to 25.9% for the six months ended June 30, 2023, a decrease of 1.4 percentage points. The decrease was primarily driven by casualty insurance, as a result of a change in the business mix and non-recurring profit commissions recorded in the six months ended June 30, 2023.

Other Underwriting Expenses and Other Underwriting Expense Ratios

	For the Six Months Ended
($ in thousands)	June 30, 2024			June 30, 2023
Other underwriting expenses	$	65,174		$	58,002
Other underwriting expense ratio	14.0		%	16.2		%

Other underwriting expenses are general and administrative costs incurred by our reportable segments.

Other underwriting expenses were $65.2 million for the six months ended June 30, 2024, an increase of $7.2 million, or 12.4%, compared to $58.0 million for the six months ended June 30, 2023. The increase was primarily driven by increases in headcount as we built out underwriting teams supporting the corresponding increase in premium volume, and certain growth related professional and IT costs.

The other underwriting expense ratios for the six months ended June 30, 2024 and 2023 decreased from 16.2% to 14.0% over the same period, as a result of growth in the premium base.

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Bermuda Segment

	For the Six Months Ended
($ in thousands)	June 30, 2024			June 30, 2023
Gross premiums written	$	692,788		$	518,215
Net premiums written	$	570,610		$	414,139
Net premiums earned	$	391,611		$	289,211
Third party fee income	6,083			150
Claims and Expenses
Losses and loss adjustment expenses	217,800			170,010
Acquisition costs	79,982			57,543
Other underwriting expenses	26,834			23,884
Underwriting income (loss)	$	73,078		$	37,924
Attritional losses - current year	$	212,750		$	140,299
Attritional losses - prior year development	5,050			8,603
Catastrophe losses - current year	—			20,506
Catastrophe losses - prior year development	—			602
Losses and loss adjustment expenses	$	217,800		$	170,010
Attritional loss ratio - current year	54.3		%	48.5		%
Attritional loss ratio - prior year development	1.3		%	3.0		%
Catastrophe loss ratio - current year	0.0		%	7.1		%
Catastrophe loss ratio - prior year development	0.0		%	0.2		%
Losses and loss adjustment expense ratio	55.6		%	58.8		%
Acquisition cost ratio	20.4		%	19.9		%
Other underwriting expense ratio	5.3		%	8.2		%
Combined ratio	81.3		%	86.9		%

Gross Premiums Written

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Property	$	325,493	$	243,569
Casualty	254,226		188,818
Specialty	113,069		85,828
Total	$	692,788	$	518,215

Gross premiums written for the six months ended June 30, 2024 increased by $174.6 million, or 33.7%, from $518.2 million for the six months ended June 30, 2023 to $692.8 million for the six months ended June 30, 2024. The increase was primarily driven by new business, expanded participations and rate increases in property and casualty reinsurance classes. Specialty reinsurance also increased, primarily driven by new business and non-recurring reinstatement premiums.

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Net Premiums Earned

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Property	$	145,598	$	103,867
Casualty	185,649		131,540
Specialty	60,364		53,804
Total	$	391,611	$	289,211

Net premiums earned for the six months ended June 30, 2024 increased by $102.4 million, or 35.4%, from $289.2 million for the six months ended June 30, 2023 to $391.6 million for the six months ended June 30, 2024. The increase was primarily driven by new business, volume growth and rate increases in our casualty and property reinsurance classes. The most significant drivers of this increase were general liability, professional lines and property treaty classes.

Losses and Loss Adjustment Expenses

	For the Six Months Ended
($ in thousands)	Current year		% of net premiums earned		Prior year development		% of net premiums earned		Losses and loss adjustment expenses		% of net premiums earned
June 30, 2024
Attritional losses	$	212,750	54.3	%	$	5,050	1.3	%	$	217,800	55.6	%
Catastrophe losses	—		0.0	%	—		0.0	%	—		0.0	%
Total	$	212,750	54.3	%	$	5,050	1.3	%	$	217,800	55.6	%
June 30, 2023
Attritional losses	$	140,299	48.5	%	$	8,603	3.0	%	$	148,902	51.5	%
Catastrophe losses	20,506		7.1	%	602		0.2	%	21,108		7.3	%
Total	$	160,805	55.6	%	$	9,205	3.2	%	$	170,010	58.8	%

The loss ratio for the six months ended June 30, 2024 was 55.6%, compared to 58.8% for the six months ended June 30, 2023, a decrease of 3.2 percentage points. The decrease was primarily driven by a lower level of catastrophe losses for the six months ended June 30, 2024.

Attritional loss ratio - current year for the six months ended June 30, 2024 was 54.3% compared to 48.5% for the six months ended June 30, 2023, an increase of 5.8 percentage points. The increase in the current year attritional loss ratio was primarily driven by $26.1 million of losses arising from the Baltimore Bridge collapse, which impacted our insurance and reinsurance classes, with no comparable losses for six months ended June 30, 2023.

Attritional loss ratio - prior year for the six months ended June 30, 2024 was an unfavorable 1.3% compared to an unfavorable 3.0% for the six months ended June 30, 2023, a decrease of 1.7 percentage points. The unfavorable attritional loss ratio - prior year was primarily driven by modest unfavorable development across a variety of casualty reinsurance classes and unfavorable development in specialty reinsurance classes relating to one specific large loss.

Catastrophe losses - current year and prior year for the six months ended June 30, 2024 were $Nil. Catastrophe losses - current year and prior year of $21.1 million for the six months ended June 30, 2023 were primarily driven by severe convective storms in June 2023 ($13.1 million), the wind and thunderstorm events which impacted states in both the Southern and Midwest U.S. during March 2023 ($7.4 million), and unfavorable prior year development of $0.6 million.

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Acquisition Costs

	For the Six Months Ended
	Acquisition Costs				% of Net Premiums Earned
($ in thousands)	June 30, 2024		June 30, 2023		June 30, 2024		June 30, 2023		'24 vs '23 point r
Property	$	18,765	$	13,645	12.9	%	13.1	%	(0.2)
Casualty	46,680		28,892		25.1	%	22.0	%	3.1
Specialty	14,537		15,006		24.1	%	27.9	%	(3.8)
Total	$	79,982	$	57,543	20.4	%	19.9	%	0.5

The acquisition cost ratio for the six months ended June 30, 2024 was 20.4%, compared to 19.9% for the six months ended June 30, 2023. The modest increase was primarily driven by a change in the mix of business, including more proportional business written in our casualty reinsurance classes.

Other Underwriting Expenses and Other Underwriting Expense Ratios

	For the Six Months Ended
($ in thousands)	June 30, 2024			June 30, 2023
Other underwriting expenses	$	26,834		$	23,884
Other underwriting expense ratio	5.3		%	8.2		%

Other underwriting expenses for the six months ended June 30, 2024 increased by $3.0 million, or 12.4%, from $23.9 million for the six months ended June 30, 2023 to $26.8 million for the six months ended June 30, 2024. The increase was primarily driven by an increase in salary and compensation costs, an increased headcount, and professional fees.

The other underwriting expense ratios for the six months ended June 30, 2024 and 2023 decreased over the same period to 5.3% from 8.2%, as a result of the growth in premium base and certain performance based management fees recognized by Ada Capital Management Limited in the current period for services provided to Ada Re, Ltd.

Corporate and Other

Total Net Realized and Unrealized Gains (Losses) on Investments and Net Investment Income (Loss)

The components of total net realized and unrealized gains (losses) on investments and net investment income (loss) are as follows:

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Total net realized and unrealized gains (losses) on investments and net investment income (loss) - TSHF(1)	$	408,002	$	40,045
Total net realized and unrealized gains (losses) on investments and net investment income (loss) - other	24,958		24,144
	$	432,960	$	64,189
Net income (loss) attributable to non-controlling interest - TSHF	$	189,455	$	6,011

(1) Prior to non-controlling interest performance incentive allocation

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Total net realized and unrealized gains (losses) on investments and net investment income (loss) - TSHF, prior to non-controlling interest, returned income of $408.0 million and $40.0 million for the six months ended June 30, 2024 and 2023, respectively. This includes the fund's returns, net of investment management fees.

Net investment income, net of non-controlling interest - TSHF, net of non-controlling interest, returned income of $218.5 million and $34.0 million for the six months ended June 30, 2024 and 2023, respectively. This includes the fund's returns, net of investment management fees and performance incentive allocations. The aggregate incentive allocation to which the investment manager is entitled is included in "Net income attributable to non-controlling interests" in our GAAP financial statements.

TS Hamilton Fund produced returns, net of investment management fees and performance incentive allocations, of 12.9% and 2.1% for the six months ended June 30, 2024 and 2023, respectively.

For the six months ended June 30, 2024, gains in TSHF were led by macroeconomic trading in FTV. Within FTV, gains were achieved in equities, fixed income, commodities, and currencies while losses were experienced in credit. TSHF also saw gains from single name equities trading within STV and ESTV. In single name equities trading, gains were led by U.S. equities within STV, followed by non-U.S. equities within ESTV. Within ESTV, East Asia, Europe, China, and Pan-America all made positive contributions to gains.

For the six months ended June 30, 2023, TSHF received positive contributions from single name equities trading which was partially offset by losses experienced from macroeconomic trading in FTV. In STV and ESTV, both non-U.S. and U.S. portfolios have contributed positively. In FTV, losses were driven by fixed income and commodities, with equities and currencies trading contributing positive results.

Total net realized and unrealized gains (losses) on investments and net investment income (loss) - other returned income of $25.0 million and $24.1 million for the six months ended June 30, 2024 and 2023, respectively. The returns are primarily driven by investment income on higher yielding assets, partially offset by negative price returns as a result of rising U.S. treasury interest rates in the year to date.

Other Income (Loss)

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Other income (loss), excluding third party fee income	$	—	$	—

Other income (loss), excluding third party fee income, consists of varying insignificant items in each period. There was no other income (loss) for the six months ended June 30, 2024 and 2023.

Net Foreign Exchange Gains (Losses)

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Net foreign exchange gains (losses)	$	(3,911)	$	(5,387)

Our functional currency is the U.S. Dollar. We may conduct routine underwriting operations or invest a portion of our cash and other investable assets in currencies other than U.S. Dollars. Consequently, we may incur foreign exchange gains and losses in our results of operations.

Foreign exchange losses of $3.9 million and $5.4 million for the six months ended June 30, 2024 and 2023, respectively, primarily related to the remeasurement of insurance-related assets and liabilities denominated in British Pounds, Euro, Japanese Yen, and Australian and Canadian Dollars.

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Corporate Expenses

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Corporate expenses	$	27,764	$	13,154

Corporate expenses for the six months ended June 30, 2024 were $27.8 million compared to $13.2 million for the six months ended June 30, 2023, an increase of $14.6 million. The increase was primarily driven by $6.2 million of VAP expense, certain variable performance based compensation costs, an increased headcount and an increase in professional fees associated with operating as a public company.

Amortization of Intangible Assets

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Amortization of intangible assets	$	6,569	$	5,075

Amortization of intangible assets of $6.6 million and $5.1 million for the six months ended June 30, 2024 and 2023, respectively, relates to internally developed software and intangible assets acquired in a business combination. Amortization expense increased due to the incremental expense associated with additional technology projects.

Interest Expense

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Interest expense	$	11,738	$	10,718

Interest expense of $11.7 million and $10.7 million for the six months ended June 30, 2024 and 2023, respectively, relates to interest payments and certain administrative fees associated with our term loan and letter of credit facilities. The increase in interest expense is primarily driven by the increase in the Secured Overnight Financing Rate ("SOFR"), which underlies the floating rate associated with the term loan.

Income Tax Expense (Benefit)

	For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023
Income tax expense (benefit)	$	3,089	$	4,521

Income tax expense of $3.1 million and $4.5 million for the six months ended June 30, 2024 and 2023, respectively, primarily relates to withholding taxes on investment income from TS Hamilton Fund.

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Key Operating and Financial Metrics

The Company has identified the following metrics as key measures of the Company’s performance:

Book Value per Common Share

Management believes that book value is an important indicator of value provided to common shareholders and aligns the Company’s and most investors’ long term objectives. We calculate book value per common share as total common shareholders’ equity divided by the total number of common shares outstanding at the point in time.

	As at
($ in thousands, except per share amounts)	June 30, 2024		December 31, 2023
Closing common shareholders' equity	$	2,238,547	$	2,047,850
Closing common shares outstanding	101,922,771		110,225,103
Book value per common share	$	21.96	$	18.58

Book value per common share was $21.96 at June 30, 2024, a $3.38 or 18.2% increase from the Company’s book value per common share of $18.58 at December 31, 2023. The increase was primarily driven by both the Company’s net income attributable to common shareholders of $288.3 million and the accretive impact of the Share Repurchase (see Note 10, Share Capital in the accompanying unaudited condensed financial statements for further details).

Tangible Book Value per Common Share

Management believes that tangible book value is an important indicator of value provided to common shareholders and aligns the Company’s and most investors’ long term objectives. We calculate tangible book value per common share as total common shareholders’ equity less intangible assets, divided by the total number of common shares outstanding at the point in time.

	As at
($ in thousands, except per share amounts)	June 30, 2024		December 31, 2023
Closing common shareholders' equity	$	2,238,547	$	2,047,850
Intangible assets	94,410		90,996
Closing common shareholders' equity, less intangible assets	$	2,144,137	$	1,956,854
Closing common shares outstanding	101,922,771		110,225,103
Tangible book value per common share	$	21.04	$	17.75

Tangible book value per common share was $21.04 at June 30, 2024, a $3.29 or 18.5% increase from the Company’s tangible book value per common share of $17.75 at December 31, 2023. The increase was primarily driven by the Company’s net income attributable to common shareholders of $288.3 million and the accretive impact of the Share Repurchase (see Note 10, Share Capital in the accompanying unaudited condensed financial statements for further details).

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Return on Average Common Shareholders' Equity

Management believes that return on average common shareholders’ equity or ("ROACE") is an important indicator of the Company’s profitability and financial efficiency. We calculate it by dividing net income (loss) attributable to common shareholders by average common shareholders' equity for the corresponding period.

	For the Three Months Ended						For the Six Months Ended
($ in thousands)	June 30, 2024			June 30, 2023			June 30, 2024			June 30, 2023
Net income (loss) attributable to common shareholders	$	131,085		$	36,787		$	288,259		$	88,279
Average common shareholders' equity for the period	$	2,224,026		$	1,734,297		$	2,143,199		$	1,708,169
Return on average common shareholders' equity	5.9		%	2.1		%	13.4		%	5.2		%

ROACE was 5.9% for the three months ended June 30, 2024 compared to 2.1% for the three months ended June 30, 2023. The increase was primarily driven by the higher net income attributable to common shareholders for the three months ended June 30, 2024 compared to the three months ended June 30, 2023.

ROACE was 13.4% for the six months ended June 30, 2024 compared to 5.2% for the six months ended June 30, 2023. The increase was primarily driven by the higher net income attributable to common shareholders reported for the six months ended June 30, 2024 compared to six months ended June 30, 2023.

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Non-GAAP Measures

We present our results of operations in a way that we believe will be the most meaningful and useful to investors, analysts, rating agencies and others who use our financial information to evaluate our performance. Some of the measurements are considered non-GAAP financial measures under SEC rules and regulations. In this Form 10-Q, we present underwriting

income (loss), a non-GAAP financial measure as defined in Item 10(e) of SEC Regulation S-K. We believe that non-GAAP financial measures, which may be defined and calculated differently by other companies, help explain and enhance the understanding of our results of operations. However, these measures should not be viewed as a substitute for those determined in accordance with U.S. GAAP. Where appropriate, reconciliations of our non-GAAP measures to the most comparable GAAP figures are included below.

Underwriting Income (Loss)

We calculate underwriting income (loss) on a pre-tax basis as net premiums earned less losses and loss adjustment expenses, acquisition costs and other underwriting expenses (net of third party fee income). We believe that this measure of our performance focuses on the core fundamental performance of the Company’s reportable segments in any given period and is not distorted by investment market conditions, corporate expense allocations or income tax effects.

The table below reconciles underwriting income (loss) to net income (loss), the most comparable GAAP financial measure:

	For the Three Months Ended				For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023		June 30, 2024		June 30, 2023
Underwriting income (loss)	$	65,299	$	34,894	$	97,825	$	68,956
Total net realized and unrealized gains (losses) on investments and net investment income (loss)	164,971		26,697		432,960		64,189
Other income (loss), excluding third party fee income	—		(29)		—		—
Net foreign exchange gains (losses)	(1,782)		(3,341)		(3,911)		(5,387)
Corporate expenses	(16,262)		(6,491)		(27,764)		(13,154)
Amortization of intangible assets	(3,317)		(2,305)		(6,569)		(5,075)
Interest expense	(6,031)		(5,189)		(11,738)		(10,718)
Income tax (expense) benefit	(2,496)		(2,948)		(3,089)		(4,521)
Net income (loss), prior to non-controlling interest	$	200,382	$	41,288	$	477,714	$	94,290

Third Party Fee Income

Third party fee income includes income that is incremental and/or directly attributable to our underwriting operations. It is primarily comprised of fees earned by the International segment for management services provided to third party syndicates and consortia and by the Bermuda segment for performance based management fees generated by our third party capital manager, Ada Capital Management Ltd. We believe that this measure is a relevant component of our underwriting income (loss).

The table below reconciles third party fee income to other income, the most comparable GAAP financial measure:

	For the Three Months Ended				For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023		June 30, 2024		June 30, 2023
Third party fee income	$	5,989	$	2,449	$	13,470	$	5,452
Other income (loss), excluding third party fee income	—		(29)		—		—
Other income (loss)	$	5,989	$	2,420	$	13,470	$	5,452

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Other Underwriting Expenses

Other underwriting expenses include those general and administrative expenses that are incremental and/or directly attributable to our underwriting operations. While this measure is presented in Note 8, Segment Reporting, it is considered a non-GAAP financial measure when presented elsewhere.

Corporate expenses include holding company costs necessary to support our reportable segments. As these costs are not incremental and/or directly attributable to our underwriting operations, these costs are excluded from other underwriting expenses, and therefore, underwriting income (loss). General and administrative expenses, the most comparable GAAP financial measure to other underwriting expenses, also includes corporate expenses.

The table below reconciles other underwriting expenses to general and administrative expenses, the most comparable GAAP financial measure:

	For the Three Months Ended				For the Six Months Ended
($ in thousands)	June 30, 2024		June 30, 2023		June 30, 2024		June 30, 2023
Other underwriting expenses	$	48,655	$	42,743	$	92,008	$	81,886
Corporate expenses	16,262		6,491		27,764		13,154
General and administrative expenses	$	64,917	$	49,234	$	119,772	$	95,040

Other Underwriting Expense Ratio

Other Underwriting Expense Ratio is a measure of the other underwriting expenses (net of third party fee income) incurred by the Company and is expressed as a percentage of net premiums earned.

Loss Ratio

Attritional Loss Ratio – current year is the attritional losses incurred by the company relating to the current year divided by net premiums earned.

Attritional Loss Ratio – prior year development is the attritional losses incurred by the company relating to prior years divided by net premiums earned.

Catastrophe Loss Ratio – current year is the catastrophe losses incurred by the company relating to the current year divided by net premiums earned.

Catastrophe Loss Ratio – prior year development is the catastrophe losses incurred by the company relating to prior years divided by net premiums earned.

Combined Ratio

Combined Ratio is a measure of our underwriting profitability and is expressed as the sum of the loss and loss adjustment expense ratio, acquisition cost ratio and other underwriting expense ratio. A combined ratio under 100% indicates an underwriting profit, while a combined ratio over 100% indicates an underwriting loss.

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Financial Condition, Liquidity and Capital Resources

Financial Condition

Investment Philosophy

The Company maintains two segregated investment portfolios: a fixed maturities and short-term investments trading portfolio and an investment in Two Sigma Hamilton Fund ("TS Hamilton Fund").

The Company's high quality and liquid fixed maturities and short-term investments portfolio is structured to focus primarily on the preservation of capital and the availability of liquidity to meet the Company’s claims obligations, to be well diversified across market sectors, and to generate relatively attractive returns on a risk-adjusted basis over time. The Company’s investments are subject to market-wide risks and fluctuations, as well as to risks inherent in particular securities.

The Company also invests in TS Hamilton Fund, a Delaware limited liability company. Hamilton Re has a commitment with TS Hamilton Fund to maintain an amount up to the lesser of (i) $1.8 billion or (ii) 60% of Hamilton Insurance Group’s net tangible assets in TS Hamilton Fund, such lesser amount, the "Minimum Commitment Amount", for a three-year period (the "Initial Term") and for rolling three-year periods thereafter (each such three-year period the "Commitment Period"), subject to certain circumstances and the liquidity options described below, with the Commitment Period ending on June 30, 2026. The Commitment Period consists of a 3-year rolling term that automatically renews on an annual basis unless Hamilton Re or the Managing Member provide advance notice of non-renewal. Two Sigma is a United States Securities and Exchange Commission registered investment adviser specializing in quantitative analysis. The TS Hamilton Fund investment strategy is focused on delivering non-market correlated investment income and total return through all market cycles while maintaining appropriate portfolio liquidity and credit quality to meet the requirements of customers, rating agencies and regulators.

Cash and Investments

At June 30, 2024 and December 31, 2023, total cash and investments was $4.6 billion and $4.0 billion, respectively. However, a significant portion of the total cash and investments balances held were invested in TS Hamilton Fund as collateral for the investments held by the underlying trading vehicles, as shown in the tables under the "TS Hamilton Fund" discussion.

	As at
($ in thousands)	June 30, 2024				December 31, 2023
Fixed maturity investments, at fair value	$	2,068,930	46	%	$	1,831,268	46	%
Short-term investments, at fair value	463,542		10	%	428,878		11	%
	2,532,472		56	%	2,260,146		57	%
Investments in Two Sigma Funds, at fair value	923,682		20	%	851,470		21	%
Total investments	3,456,154		76	%	3,111,616		78	%
Cash and cash equivalents	1,016,573		22	%	794,509		20	%
Restricted cash	98,279		2	%	106,351		2	%
Total cash	1,114,852		24	%	900,860		22	%
Total cash & investments	$	4,571,006	100	%	$	4,012,476	100	%

Total cash and investments increased from $4.0 billion at December 31, 2023 to $4.6 billion at June 30, 2024. The increase was driven by both the TS Hamilton Fund, primarily due to positive investment returns for the six months ended June 30, 2024, and fixed maturity investments as we deployed more cash into the fixed maturity trading portfolio to take advantage of higher interest rates. The TS Hamilton Fund represents $2.0 billion and $1.8 billion of the total cash and investments as at June 30, 2024 and December 31, 2023, respectively.

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Fixed Maturity and Short-term Investments - Trading

The Company’s fixed maturity trading portfolio and short-term investments at June 30, 2024 and December 31, 2023 are as follows:

	2024
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Fixed maturities:
U.S. government treasuries	$	702,657	$	966	$	(15,523)	$	688,100
U.S. states, territories and municipalities	4,477		—		(235)		4,242
Non-U.S. sovereign governments and supranationals	74,597		615		(1,508)		73,704
Corporate	1,023,626		3,243		(20,357)		1,006,512
Residential mortgage-backed securities - Agency	236,874		93		(16,231)		220,736
Residential mortgage-backed securities - Non-agency	5,961		9		(674)		5,296
Commercial mortgage-backed securities - Non-agency	33,355		4		(1,033)		32,326
Other asset-backed securities	38,192		52		(230)		38,014
Total fixed maturities	2,119,739		4,982		(55,791)		2,068,930
Short-term investments	461,525		2,017		—		463,542
Total	$	2,581,264	$	6,999	$	(55,791)	$	2,532,472

	2023
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Fixed maturities:
U.S. government treasuries	$	717,134	$	5,137	$	(14,021)	$	708,250
U.S. states, territories and municipalities	4,656		—		(286)		4,370
Non-U.S. sovereign governments and supranationals	55,662		2,175		(1,591)		56,246
Corporate	877,493		8,443		(22,060)		863,876
Residential mortgage-backed securities - Agency	180,661		435		(12,583)		168,513
Residential mortgage-backed securities - Non-agency	5,639		16		(671)		4,984
Commercial mortgage-backed securities - Non-agency	11,473		—		(1,050)		10,423
Other asset-backed securities	14,781		20		(195)		14,606
Total fixed maturities	1,867,499		16,226		(52,457)		1,831,268
Short-term investments	427,437		1,441		—		428,878
Total	$	2,294,936	$	17,667	$	(52,457)	$	2,260,146

The fair value of the Company’s fixed maturity trading portfolio and short-term investments increased from $2.3 billion at December 31, 2023 to $2.5 billion at June 30, 2024, due to increases in the fixed maturity trading portfolio and the short-term investments held by TS Hamilton Fund.

Short-term investments of $463.5 million and $428.9 million at June 30, 2024 and December 31, 2023, respectively, are held within TS Hamilton Fund. The cash and short-term investment balances within TS Hamilton Fund are not managed by the Company, nor can they be removed from TS Hamilton Fund as they support the underlying investment strategies within the three trading vehicles. The balance may fluctuate significantly from period to period as a result of movements in the underlying funds. See discussion below for further details on assets within TS Hamilton Fund.

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The fair values and weighted-average credit ratings of our fixed maturity trading portfolio and short-term investments by type at June 30, 2024 and December 31, 2023 were as follows:

	2024					2023
($ in thousands)	Fair Value		% of Total		Weighted average credit rating	Fair Value		% of Total		Weighted average credit rating
Fixed maturities:
U.S. government treasuries	$	688,100	27	%	Aaa	$	708,250	31	%	Aaa
U.S. states, territories and municipalities	4,242		0	%	Aa2	4,370		0	%	Aa2
Non-U.S. sovereign governments and supranationals	73,704		3	%	Aa2	56,246		2	%	Aa2
Corporate	1,006,512		40	%	A3	863,876		39	%	A3
Residential mortgage-backed securities - Agency	220,736		9	%	Aaa	168,513		7	%	Aaa
Residential mortgage-backed securities - Non-agency	5,296		0	%	Aaa	4,984		0	%	Aaa
Commercial mortgage-backed securities - Non-agency	32,326		1	%	Aaa	10,423		1	%	Aa1
Other asset-backed securities	38,014		2	%	Aaa	14,606		1	%	Aaa
Total fixed maturities	2,068,930		82	%	Aa3	1,831,268		81	%	Aa3
Short-term investments	463,542		18	%	Aaa	428,878		19	%	Aaa
Total fixed maturities and short-term investments	$	2,532,472	100	%	Aa2	$	2,260,146	100	%	Aa2
Fixed maturity and short-term investments credit quality summary:
Investment grade			100.0	%				100	%
Non-investment grade			0.0	%				0	%
Total			100.0	%				100	%

The average credit quality, the average yield to maturity and the expected average duration of the Company’s fixed maturities and short-term investments trading portfolio at June 30, 2024 and December 31, 2023, excluding short-term investments held by the TS Hamilton Fund, were as follows:

	2024		2023
Average credit quality	Aa3		Aa3
Average yield to maturity	5.0	%	4.5	%
Expected average duration (in years)	3.3		3.3

At June 30, 2024 and December 31, 2023, approximately 100% of the Company’s fixed maturities and short-term investments trading portfolio was rated investment grade (Baa2 or higher) by third party rating services. There were no non-investment grade securities in the fixed maturities and short-term investments trading portfolio. The average credit quality of the Company’s fixed maturities and short-term investments trading portfolio at June 30, 2024 and December 31, 2023, excluding short-term investments held by the TS Hamilton Fund, was Aa3.

The average yield to maturity on the Company’s fixed maturities and short-term investments trading portfolio increased to 5.0% at June 30, 2024 from 4.5% at December 31, 2023.

The expected average duration of the Company’s fixed maturities and short-term investments trading portfolio was 3.3 years at both June 30, 2024 and December 31, 2023, respectively.

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TS Hamilton Fund

Although Two Sigma has broad discretion to allocate invested assets to different opportunities, the current strategy is focused on highly diversified liquid positions in global equities, futures and foreign exchange markets. Through its investments in Two Sigma Futures Portfolio, LLC ("FTV"), Two Sigma Spectrum Portfolio, LLC ("STV") and Two Sigma Equity Spectrum Portfolio, LLC ("ESTV"), we seek to achieve absolute dollar denominated returns on a substantial capital base primarily by combining multiple hedged and leveraged systematic investment strategies with proprietary risk management and execution techniques. These systematic strategies include, but are not limited to, technical and statistically-based, fundamental-based, event-based, market condition-based and spread-based strategies as well as contributor-based and/or sentiment-based strategies and blended strategies. FTV primarily utilizes systematic strategies to gain broad macro exposure to FX, fixed income, equity and credit indices, and commodities, predominantly by trading futures, spots, forwards, options, swaps, cash bonds and exchange traded products. STV primarily utilizes systematic strategies to trade U.S.-listed equity securities and related instruments and derivatives. ESTV primarily utilizes systematic strategies to trade non-U.S.-listed equity securities and related instruments and derivatives. At June 30, 2024, the Company owns an 18.4%, 18.1% and 10.0%, interest in each of the FTV, STV and ESTV funds, respectively.

TS Hamilton Fund invests in Two Sigma Funds ("Two Sigma Funds"), which are stated at their estimated fair values, which generally represent the Company’s proportionate interest in the members’ equity of the Two Sigma Funds as reported by the respective funds based on the net asset value ("NAV") provided by the fund administrator. The Company accounts for its investment in Two Sigma Funds under the variable interest model at NAV as a practical expedient for fair value in the consolidated balance sheets.

The Company’s investments in Two Sigma Funds at June 30, 2024 and December 31, 2023 are as follows:

	2024						2023
($ in thousands)	Cost		Net Unrealized Gains (Losses)		Fair Value		Cost		Net Unrealized Gains (Losses)		Fair Value
Two Sigma Futures Portfolio, LLC (FTV)	$	319,216	$	52,179	$	371,395	$	433,911	$	(38,105)	$	395,806
Two Sigma Spectrum Portfolio, LLC (STV)	231,538		115,187		346,725		193,299		88,228		281,527
Two Sigma Equity Spectrum Portfolio, LLC (ESTV)	160,482		45,080		205,562		142,981		31,156		174,137
Total	$	711,236	$	212,446	$	923,682	$	770,191	$	81,279	$	851,470

The increase in the total fair value of the Company’s investments in Two Sigma Funds from $851.5 million at December 31, 2023 to $923.7 million at June 30, 2024 is primarily driven by investment gains and collateral management within TS Hamilton Fund. The total net assets managed in TS Hamilton Fund represent our investment in and exposure to Two Sigma Funds’ investment strategies. However, as part of Two Sigma’s collateral management processes, any capital not required to be held within one of the specific trading vehicles is held in cash or short-term investments within TS Hamilton Fund as shown in the following table. The cash and short-term investment balances are not managed by the Company, nor can they be removed from TS Hamilton Fund as they support the underlying investment strategies within the three trading vehicles.

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The following table represents the total assets and total liabilities of TS Hamilton Fund at June 30, 2024 and December 31, 2023. Creditors or beneficial interest holders of TS Hamilton Fund have no recourse to the general credit of the Company as the Company’s obligation is limited to the amount of its committed investment.

($ in thousands)	2024		2023
Assets
Cash and cash equivalents	$	650,671	$	479,255
Short-term investments	463,542		428,878
Investments in Two Sigma Funds, at fair value	923,682		851,470
Receivables for investments sold	—		41,087
Interest and dividends receivable	1,029		966
Total assets	2,038,924		1,801,656
Liabilities
Accounts payable and accrued expenses	177		191
Withdrawal payable	43,030		6,480
Payable for investments purchased	87,716		62,440
Total liabilities	130,923		69,111
Total net assets managed by TS Hamilton Fund	$	1,908,001	$	1,732,545

Total net assets in TS Hamilton Fund were $1.9 billion and $1.7 billion at June 30, 2024 and December 31, 2023, respectively.

Liquidity and Capital Resources

Liquidity

Liquidity is a measure of a company’s ability to generate cash flows sufficient to meet the short-term and long-term cash requirements of its business operations. The Company manages liquidity at the holding company and operating subsidiary level.

Management believes that its significant cash flows from operations and high quality liquid investment portfolio will provide sufficient liquidity for the foreseeable future. At June 30, 2024 and December 31, 2023, total unrestricted cash and cash equivalents were $1.0 billion and $794.5 million, respectively, and total restricted cash and cash equivalents were $98.3 million and $106.4 million, respectively.

Holding Company

As a holding company, Hamilton Insurance Group, Ltd. has no operations of its own and its assets consist primarily of investments in its subsidiaries. Accordingly, Hamilton Insurance Group, Ltd.’s future cash flows depend on the availability of dividends or other statutorily permissible distributions, such as returns of capital, from its subsidiaries. The ability to pay such dividends and/or distributions is limited by the applicable laws and regulations of the various countries and states in which the Company’s subsidiaries operate (refer to Note 18, Statutory Requirements in the audited consolidated financial statements included in our Form 10-K for the year ended December 31, 2023 for further details), as well as the need to maintain capital levels to adequately support insurance and reinsurance operations, and to preserve financial strength ratings issued by independent rating agencies.

During the six months ended June 30, 2024 and 2023, Hamilton Insurance Group, Ltd. received $137.5 million and $7.0 million, respectively, of distributions from its subsidiaries. Hamilton Insurance Group, Ltd.’s primary use of funds is interest payments on debt and credit facilities, capital investments in subsidiaries, and payment of corporate operating expenses. In addition, on May 8, 2024, the Company entered into an agreement to repurchase 9,124,729 Class A common shares at $12.00 per share. The total purchase price was $109.5 million. The common shares purchased by the Company were cancelled following the repurchase transaction. Management believes the dividend distribution capacity of Hamilton Insurance Group, Ltd.’s subsidiaries, which was estimated at $471.6 million at December 31, 2023, will provide Hamilton Insurance Group, Ltd. with sufficient liquidity for the foreseeable future.

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Operating Subsidiaries

Hamilton Insurance Group, Ltd.’s operating subsidiaries primarily derive cash from the net inflow of premiums less claim payments related to underwriting activities and from net investment income. Historically, these cash receipts have been sufficient to fund the operating expenses of these subsidiaries, as well as to fund dividend payments to Hamilton Insurance Group, Ltd. The subsidiaries’ remaining cash flows are generally invested into the investment portfolio. The remaining cash flows have also been used to fund common share repurchases and to fund acquisitions.

The operating subsidiaries’ insurance and reinsurance business inherently provides liquidity, as premiums are received in advance (sometimes substantially in advance) of the time losses are paid. However, the amount of cash required to fund loss payments can fluctuate significantly from period to period, due to the low frequency and high severity nature of certain types of business written. As such, cash flows from operating activities may vary significantly between periods.

The payment of dividends by operating subsidiaries is, under certain circumstances, limited by the applicable laws and regulations in the various jurisdictions in which the subsidiaries operate. In addition, insurance laws require the insurance subsidiaries to maintain certain measures of solvency and liquidity. Management believes that each of the Company’s insurance subsidiaries and branches exceeded the minimum solvency, capital and surplus requirements in their applicable jurisdictions at December 31, 2023. Certain of the subsidiaries and branches are required to file Financial Condition Reports ("FCR"), with their regulators, which provide details on solvency and financial performance. Where required, these FCRs are posted on the Company’s website.

The regulations governing the Company’s principal operating subsidiaries’ ability to pay dividends and to maintain certain measures of solvency and liquidity are discussed in Note 18, Statutory Requirements in the Company’s audited consolidated financial statements as included in our Form 10-K for the year ended December 31, 2023.

Consolidated Cash Flows

Consolidated cash flows from operating, investing and financing activities for the six months ended June 30, 2024 and 2023 were as follows:

($ in thousands)	2024		2023
Total cash provided by (used in):
Operating activities	$	314,638	$	75,911
Investing activities	129,909		(351,922)
Financing activities	(225,301)		(8,252)
Effect of exchange rate changes on cash	(5,254)		2,278
Net increase (decrease) in cash and cash equivalents	$	213,992	$	(281,985)

Net cash provided by (used in) operating activities was $314.6 million and $75.9 million in the six months ended June 30, 2024 and 2023, respectively. Cash inflows from insurance and reinsurance operations typically include premiums, net of acquisition costs, and reinsurance recoverables. Cash outflows principally include payments of losses and loss expenses, payments of premiums to reinsurers and operating expenses. Cash provided by operating activities fluctuates due to timing differences between the collection of premiums and reinsurance recoverables and the payment of losses and loss adjustment expenses, and the payment of premiums to reinsurers.

Net cash provided by (used in) investing activities was $129.9 million and $(351.9) million in the six months ended June 30, 2024 and 2023, respectively, primarily driven by the timing of investing activities and the net proceeds of turnover in our fixed maturities and short-term investments.

Net cash provided by (used in) financing activities was $(225.3) million and $(8.3) million in the six months ended June 30, 2024 and 2023, respectively. Net cash used in financing activities for the six months ended June 30, 2024 was driven by the Share Repurchase (see Note 10, Share Capital in the accompanying unaudited condensed financial statements for further

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details) and incentive allocations paid to TS Hamilton Fund. The net cash used in financing activities for the six months ended June 30, 2023 was also driven by incentive allocations paid to TS Hamilton Fund and share repurchases.

The Company believes that annual positive cash flows from operating activities will be sufficient to cover claims payments, absent a series of additional large catastrophic losses. However, should claim payment obligations accelerate beyond the Company’s ability to fund payments from operating cash flows, the Company would utilize cash and cash equivalent balances and/or liquidate a portion of the Company’s fixed maturities and short term investments trading portfolio and/or access certain credit facilities. The Company’s fixed maturities and short term investments trading portfolio is heavily weighted towards conservative, high quality and highly liquid securities.

In addition, if necessary, the Company generally has two options related to liquidating a portion of the investment portfolio in the TS Hamilton Fund, subject to Hamilton Re’s minimum investment commitment, which are as follows:

•Monthly liquidity - Subject to certain conditions, Hamilton Re may request a whole or partial withdrawal of its capital account, no later than fifteen days prior to the end of a calendar month, effective as of the last day of such calendar month.

•Daily liquidity - Subject to certain limited circumstances, including the need to meet obligations pursuant to Hamilton Re’s underwriting operations, Hamilton Re may request a withdrawal of all or a portion of its capital account upon at least one business day’s written notice of such withdrawal request date to the Managing Member. Claim payments pertaining to any such large catastrophic event would be paid out over a period spanning many months.

Management expects that, if necessary, the full value of cash, fixed income and short-term investments at June 30, 2024 could be available in one to three business days under normal market conditions, except for $461.0 million of restricted cash and investments which primarily support the Company’s obligations in regulatory jurisdictions where it operates as a non-admitted carrier (refer to Note 3, Investments in the unaudited condensed consolidated financial statements) and $256.1 million of restricted cash and investments which primarily support the Company’s letter of credit facilities (refer to Note 9, Debt and Credit Facilities in the unaudited condensed consolidated financial statements).

Capital Resources

Management monitors the Company’s capital adequacy on a regular basis and seeks to adjust its capital according to the needs of the business. In particular, the Company requires capital sufficient to meet or exceed the capital adequacy ratios established by rating agencies for maintenance of appropriate financial strength ratings and the capital adequacy tests performed by regulatory authorities. From time to time, rating agencies and regulatory authorities may make changes in their models and methodologies, which could increase the amount of capital the Company requires. The Company may seek to raise additional capital or return capital to shareholders through some combination of common share repurchases and cash dividends. In the normal course of operations, management may from time to time evaluate additional share or debt issuances given prevailing market conditions and capital management strategies. In addition, the Company enters into agreements with financial institutions to obtain letter of credit facilities for the benefit of its operating subsidiaries to support their business operations. Management believes that the Company holds sufficient capital to allow it to take advantage of market opportunities and to maintain its financial strength ratings and comply with various local statutory regulations.

The following table summarizes our consolidated total capital at June 30, 2024 and December 31, 2023:

($ in thousands)	2024		2023
Shareholders' equity	$	2,238,547	$	2,047,850

The Company’s total capital was $2.2 billion at June 30, 2024, a 9.3% increase compared to $2.0 billion at December 31, 2023. The primary driver of the increase in total capital was the Company’s net income attributable to common shareholders of $288.3 million for the six months ended June 30, 2024, partially offset by the Share Repurchase (see Note 10, Share Capital in the accompanying unaudited condensed financial statements for further details).

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Debt

On June 23, 2022, the Company renewed its unsecured $150 million term loan credit arrangement, as amended from time to time (the "Facility"), with various lenders as arranged by Wells Fargo Securities, LLC. All or a portion of the loan issued under the Facility bears interest at either (a) the Base Rate plus the Applicable Margin or (b) the Adjusted Term Secured Overnight Financing Rate ("SOFR") plus the Applicable Margin, at the Company's discretion. In the event of default, an additional 2% interest in excess of (a) or (b) will be levied, not to exceed the highest rate permissible under applicable law, and certain types of loans may not be available for borrowing by the Company under the Facility. The Facility matures on June 23, 2025, unless accelerated pursuant to the terms of the Facility, and it contains usual and customary representations, warranties, conditions and covenants for bank loan facilities of this type. The Facility also contains certain financial covenants which cap the ratio of consolidated debt to capital and require that the Company maintain a certain minimum consolidated net worth. The net worth requirement is recalculated effective as of the end of each fiscal quarter. As at June 30, 2024, the Company was in compliance with all covenants.

	As at
($ in thousands)	June 30, 2024		December 31, 2023
Outstanding loan balance	$	150,000	$	150,000
Loan fair value	150,600		151,000
Unamortized loan issuance costs	$	113	$	170

Debt issuance costs are amortized over the period during which the Facility is outstanding, as an offset to net investment income (loss). The Company amortized debt issuance costs of less than $0.1 million or less in each of the three and six months ended June 30, 2024 and 2023.

Common Shares

The Company’s authorized and issued share capital at June 30, 2024 and December 31, 2023 is comprised as follows:

($ in thousands, except share and per share amounts)
Authorized:
Common shares of $0.01 par value each (2024 and 2023: 150,000,000)
Issued, outstanding and fully paid:	2024		2023
Class A common shares (2024: 19,520,078 and 2023: 28,644,807)	$	195	$	286
Class B common shares (2024: 57,358,464 and 2023: 56,036,067)	574		560
Class C common shares (2024: 25,044,229 and 2023: 25,544,229)	250		255
Total	$	1,019	$	1,101

On May 8, 2024, the Company entered into an agreement to repurchase 9,124,729 Class A common shares at $12.00 per share (the "Share Repurchase"). The total purchase price was $109.5 million. The common shares purchased by the Company were cancelled following the repurchase transaction.

In general, holders of Class A common shares and Class B common shares have one vote for each common share held while the Class C common shares have no voting rights, except as required by law. However, each holder of Class A common shares and Class B common shares is limited to voting (directly, indirectly or constructively, as determined for U.S. federal income tax purposes) that number of common shares equal to 9.5% of the total combined voting power of all classes of shares of the Company (or, in the case of a class vote by the holders of our Class B common shares, such as in respect of the election or removal of directors other than for directors who are appointed by certain shareholders pursuant to the Shareholders Agreement and our Bye-laws, a maximum of 14.92% of the total combined voting power). In addition, the Board of Directors may limit a shareholder’s voting rights when it deems it appropriate to do so to avoid certain material adverse tax, legal or regulatory consequences to the Company or any direct or indirect shareholder or its affiliates.

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Credit Facilities

The Company has several available letter of credit facilities and a revolving loan facility provided by commercial banks. The letter of credit facilities are utilized to provide collateral to reinsureds of Hamilton Re and its affiliates to the extent required under insurance and reinsurance agreements and to support capital requirements at Lloyd’s.

On December 5, 2018 and December 27, 2018, Hamilton Re Ltd entered into a Master Agreement for Issuance of Payment Instruments and a Facility Letter for Issuance of Payment Instruments respectively, with CitiBank Europe Plc ("CitiBank Europe"), under which CitiBank Europe agreed to provide an uncommitted secured letter of credit facility for the issuance of standby letters of credit or similar instruments in multiple currencies. On August 8, 2023, letter of credit capacity under this facility was increased to $200 million. At all times during which it is a party to the facility, Hamilton Re is obligated to pledge to CitiBank Europe cash and/or securities with a value that equals or exceeds the aggregate face amount of its then-outstanding letters of credit. The Master Agreement contains events of default customary for facilities of this type. In the facility letter, Hamilton Re makes representations and warranties that are customary for facilities of this type and agrees that it will comply with certain informational and other undertakings.

On June 23, 2022, the Company and Hamilton Re amended and restated their unsecured credit agreement with a syndication of lenders (the "Unsecured Facility"). Under the Unsecured Facility, the lenders have agreed to provide up to an aggregate of $415 million of letter of credit capacity for Hamilton Re, up to $150 million of which may be utilized for revolving loans to be issued to the Company. At June 30, 2024, there were no loan amounts outstanding under this facility. Margin rates reflect contractually agreed rates, which are based on Hamilton Re’s current Financial Strength Rating as assigned by A.M. Best. As of April 30, 2024, letters of credit issued under the facility bear interest at a rate of 137.5 basis points (previously 150 basis points), while revolving loans if issued are subject to a fee of SOFR plus a margin of 162.5 basis points (previously 185 basis points). To the extent such loans are issued, the available letter of credit capacity shall decrease proportionally, such that the aggregate credit exposure for the lenders under the credit agreement is $415 million. Amounts unutilized under the facility are subject to a fee of 17.5 basis points (previously 22.5 basis points). Capacity is provided by Wells Fargo, National Association, Truist Bank, BMO Harris Bank N.A., Commerzbank AG, New York Branch, HSBC Bank USA, N.A., and Barclays Bank PLC. Unless renewed or otherwise terminated in accordance with its terms, the Unsecured Facility is scheduled to terminate on June 23, 2025.

On August 11, 2023, Hamilton Re and HIDAC amended their committed letter of credit facility agreement with Bank of Montreal ("BMO"), with the Company as guarantor, under which BMO agreed to make available a secured letter of credit facility of $50 million for a term that will expire on August 13, 2024. The facility bears a fee of 40 basis points for letters of credit issued and 15 basis points on any unutilized portion of the facility.

On October 26, 2023, Hamilton Re amended its letter of credit facility agreement with UBS AG ("UBS") under which UBS and certain of its affiliates agreed to make available to Hamilton Re a secured letter of credit facility of $100 million for a term that will expire on October 26, 2024. The facility bears a fee of 140 basis points on the total available capacity.

In addition, on October 27, 2023, Hamilton Re amended the unsecured letter of credit facility agreement that it utilizes to provide Funds at Lloyd's ("FAL") ("FAL LOC Facility") to support the FAL requirements of Syndicate 4000. Capacity is provided by Barclays Bank PLC, ING Bank N.V., London Branch, and Bank of Montreal, London Branch. The FAL LOC Facility was increased to $230 million for an additional one year term that expires on October 27, 2024. The facility bears a fee of 162.5 basis points on the borrowed amount.

The Company’s obligations under its credit facilities require the Company, Hamilton Re and the other parties thereto to comply with various financial and reporting covenants. All applicable entities were in compliance with all such covenants at June 30, 2024.

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Certain of the Company's credit facilities are secured by pledged interests in the TS Hamilton Fund or the Company's fixed income security portfolio or cash. The Company’s credit facilities at June 30, 2024, and associated securities pledged, were as follows:

($ in thousands)	2024
Available letter of credit and revolving loan facilities - commitments	$	995,000
Available letter of credit and revolving loan facilities - in use	731,472
Security pledged under letter of credit and revolving loan facilities:
Pledged interests in TS Hamilton Fund	$	233,014
Pledged interests in fixed income portfolio	252,056
Cash	4,017

Financial Strength Ratings

The Company’s principal insurance and reinsurance operating subsidiaries are assigned financial strength ratings from internationally recognized rating agencies, including A.M. Best, Fitch Ratings and Kroll Bond Rating Agency. These ratings are publicly announced and are available directly from the agencies' websites.

Financial strength ratings represent the independent opinions of the rating agencies as to the relative creditworthiness of a company and its capacity to meet the obligations of its insurance and reinsurance contracts. Independent ratings are one of the important factors that establish a competitive position in insurance and reinsurance markets. The rating agencies consider many factors in determining the financial strength rating of an insurance company, including the relative level of statutory surplus necessary to support the business operations of the company. These ratings are based on factors considered by the rating agencies to be relevant to policyholders, agents and intermediaries and are not directed toward the protection of investors. Ratings are not recommendations to buy, sell or hold securities.

On April 30, 2024, A.M. Best, a Nationally Recognized Statistical Rating Organization ("NRSRO"), upgraded the Financial Strength Rating to "A" (Excellent) from "A-" (Excellent) and the Long-Term Issuer Credit Ratings ("ICR") of "a" (Excellent) from "a-" (Excellent) of Hamilton Re and HIDAC, each a wholly owned subsidiary of Hamilton. Also, the outlook on these ratings was revised to "stable" from "positive".

On July 2, 2024, Fitch Ratings (“Fitch”), an NRSRO, published Hamilton Re’s Issuer Financial Strength Rating of "A-" (Strong) and Hamilton Insurance Group’s Issuer Default Rating of "BBB+". The rating outlook is "stable".

On July 23, 2024, Kroll Bond Rating Agency, an NRSRO, affirmed the insurance financial strength rating of "A" of Hamilton Re and the "BBB+" issuer rating of Hamilton Insurance Group. The outlook on these ratings was changed to "stable" from "positive" also on July 25, 2024.

On December 13, 2023, S&P Global, an NRSRO, increased its financial strength rating of the Lloyd's market from "A+" to "AA-" with a stable outlook. Our Lloyd’s syndicate benefits from financial strength ratings of “A” (Excellent) from A.M. Best and “AA-” from each of S&P Global, Kroll Bond Rating Agency, or KBRA and Fitch Ratings Inc. ("Fitch").

Reserve for Losses and Loss Adjustment Expenses

Reserve for unpaid losses and loss adjustment expenses

The Company establishes loss reserves using actuarial models, historical insurance industry loss ratio experience and loss development patterns to estimate its ultimate liability of all losses and loss adjustment expenses incurred with respect to premiums earned on the contracts at a given point in time. Loss reserves do not represent an exact calculation of the liability. Estimates of ultimate liabilities are contingent on many future events and the eventual actual outcome of these events may be substantially different from the assumptions underlying the reserve estimates. The Company believes that the recorded reserve for losses and loss adjustment expenses represents management’s best estimate of the cost to settle the ultimate liabilities based on information available at June 30, 2024.

78

See Note 9, Reserve for Losses and Loss Adjustment Expenses to the audited consolidated financial statements as included in our Form 10-K for the year ended December 31, 2023 for the reconciliation of the gross and net reserve for losses and loss adjustment expenses and for a discussion of prior year reserve development.

Paid and unpaid losses and loss adjustment expenses recoverable

In the normal course of business, the Company seeks to reduce the potential amount of loss arising from claim events by reinsuring certain levels of risk with other reinsurers. See Summary of Critical Accounting Estimates – Ceded reinsurance and unpaid losses and loss adjustment expenses recoverable in our Form 10-K for the year ended December 31, 2023 for a detailed discussion of the Company’s risks related to ceded reinsurance agreements and the Company’s process to evaluate the financial condition of its reinsurers.

See Summary of Critical Accounting Estimates — Reserve for Losses and Loss Adjustment Expenses in our Form 10-K for the year ended December 31, 2023 for a detailed discussion of losses and loss adjustment expenses.

Recent Accounting Pronouncements

At June 30, 2024, there were no recently issued accounting pronouncements that have not yet been adopted that management expects could have a material impact on the Company’s results of operations, financial condition or liquidity. See Note 2, Summary of Significant Accounting Policies in the audited consolidated financial statements included in our Form 10-K for the year ended December 31, 2023.

Item 3. Quantitative and Qualitative Disclosures About Market Risk 

We are principally exposed to four types of market risk: interest rate risk, credit spread risk, equity price risk, and foreign currency risk. Our investment guidelines permit, subject to approval, investments in derivative instruments such as futures, options, foreign currency forward contracts and swap agreements, which may be used to assume risks or for hedging purposes. There were no material changes to these market risks, as disclosed in "Part II, Item 7A. Quantitative and Qualitative Disclosures about Market Risk" in our Form 10-K for the year ended December 31, 2023. See "Part II, Item 7A. Quantitative and Qualitative Disclosures about Market Risk," in our Form 10-K for the year ended December 31, 2023 for a discussion of our exposure to these risks.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we have evaluated the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(b) and 15d-15(b) of the Exchange Act, as of the end of the period covered by this report. Based upon that evaluation, our management, including our Chief Executive Officer and Chief Financial Officer, concluded that, at August 8, 2024, our disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed in Company reports filed or submitted under the Exchange Act is (i) recorded, processed, summarized and reported within the time periods specified in the SEC rules and forms and (ii) accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting during the quarter ended June 30, 2024, which were identified in connection with our evaluation required pursuant to Rules 13a-15 or 15d-15 under the Exchange Act, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

79

Part II. Other Information

Item 1. Legal Proceedings

There have been no material changes to the legal proceedings previously disclosed in our Form 10-K for the year ended December 31, 2023.

Item 1A. Risk Factors 

There have been no material changes to the risk factors previously disclosed in our Form 10-K for the year ended December 31, 2023.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table presents share repurchases during the current quarter.

($ in 000s, except per share information)	Shares purchased under publicly announced repurchase program			Other shares purchased(1)			Total shares purchased			Maximum $ amount still available under repurchase program
	Shares	Average price per share		Shares	Average price per share		Shares	Average price per share
Available for repurchase										$	—
April 1 - 30, 2024	—	$	—	—	$	—	—	$	—	$	—
May 1 - 31, 2024	—	$	—	9,124,729	$	12.00	9,124,729	$	12.00	$	—
June 1 - 30, 2024	—	$	—	155,513	$	17.23	155,513	$	17.23	$	—
Total	—			9,280,242			9,280,242			$	—

(1) Other shares purchased represents common shares repurchased and cancelled in the Share Repurchase transaction and in respect of withholding tax obligations on the exercise of warrants. See Note 10, Share Capital, to the unaudited condensed consolidated financial statements as included in our Form 10-Q for the three months ended June 30, 2024 for further details of the Share Repurchase.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures 

Not applicable.

Item 5. Other Information

None.

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Item 6. Exhibits

Exhibit No.	Description
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) or Rule 15(d)-14(a) of the Securities Exchange Act of 1934, as amended.
31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) or Rule 15(d)-14(a) of the Securities Exchange Act of 1934, as amended.
32.1	Certification of Chief Executive Officer furnished pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer furnished pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101	Interactive Data File for the period ended June 30, 2024. The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.
104	Cover Page Interactive Data File. The cover page XBRL tags are embedded within the inline XBRL document and are included in Exhibit 101.

81

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Dated: August 8, 2024
HAMILTON INSURANCE GROUP, LTD.
By:	/s/ Craig Howie
	Craig Howie
	Group Chief Financial Officer
	(Principal Financial Officer)
By:	/s/ Brian Deegan
	Brian Deegan
	Group Chief Accounting Officer
	(Principal Accounting Officer)

82

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Pina Albo, certify that:

1.     I have reviewed this Form 10-Q of Hamilton Insurance Group, Ltd.;

2.     Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.     Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.     The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.     The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 8, 2024	/s/ Pina Albo
		Pina Albo
		Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Craig Howie, certify that:

1.    I have reviewed this Form 10-Q of Hamilton Insurance Group, Ltd.;

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.    The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.    The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 8, 2024	/s/ Craig Howie
		Craig Howie
		Group Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Form 10-Q of Hamilton Insurance Group, Ltd. (the “Company”) for the quarter ended June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Pina Albo, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Pina Albo

Pina Albo

Chief Executive Officer

August 8, 2024

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Form 10-Q of Hamilton Insurance Group, Ltd. (the “Company”) for the quarter ended June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Craig Howie, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Craig Howie

Craig Howie

Group Chief Financial Officer

August 8, 2024

XML

Cover - shares	6 Months Ended
	Jun. 30, 2024	Aug. 01, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-41862
Entity Registrant Name	Hamilton Insurance Group, Ltd.
Entity Incorporation, State or Country Code	D0
Entity Tax Identification Number	98-1153847
Entity Address, Address Line One	Wellesley House North, 1st Floor
Entity Address, Address Line Two	90 Pitts Bay Road
Entity Address, City or Town	Pembroke
Entity Address, Postal Zip Code	HM 08
Entity Address, Country	BM
City Area Code	441
Local Phone Number	405-5200
Title of 12(b) Security	Class B common shares, par value $0.01 per share
Trading Symbol	HG
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		61,338,501
Entity Central Index Key	0001593275
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2

XML

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets
Investments, at fair value	$ 2,532,472	$ 2,260,146
Investments in Two Sigma Funds, at fair value (cost 2024: $711,236; 2023: $770,191)	923,682	851,470
Total investments	3,456,154	3,111,616
Cash and cash equivalents	1,016,573	794,509
Restricted cash and cash equivalents	98,279	106,351
Premiums receivable	933,211	658,363
Paid losses recoverable	147,690	145,202
Deferred acquisition costs	203,279	156,895
Unpaid losses and loss adjustment expenses recoverable	1,160,309	1,161,077
Receivables for investments sold	12,307	42,419
Prepaid reinsurance	299,574	194,306
Intangible assets	94,410	90,996
Other assets	201,317	209,621
Total assets	7,623,103	6,671,355
Liabilities
Reserve for losses and loss adjustment expenses	3,242,893	3,030,037
Unearned premiums	1,202,371	911,222
Reinsurance balances payable	399,633	272,310
Payables for investments purchased	111,280	66,606
Term loan, net of issuance costs	149,887	149,830
Accounts payable and accrued expenses	158,187	186,887
Payables to related parties	43,030	6,480
Total liabilities	5,307,281	4,623,372
Non-controlling interest – TS Hamilton Fund	77,275	133
Shareholders’ equity
Common shares:	1,019	1,101
Additional paid-in capital	1,171,585	1,249,817
Accumulated other comprehensive loss	(4,441)	(4,441)
Retained earnings	1,070,384	801,373
Total shareholders’ equity	2,238,547	2,047,850
Total liabilities, non-controlling interest, and shareholders’ equity	7,623,103	6,671,355
Total fixed maturities
Assets
Investments, at fair value	2,068,930	1,831,268
Short-term investments
Assets
Investments, at fair value	463,542	428,878
Common Class A
Shareholders’ equity
Common shares:	195	286
Common Class B
Shareholders’ equity
Common shares:	574	560
Common Class C
Shareholders’ equity
Common shares:	$ 250	$ 255

XML

Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Investments, amortized cost	$ 2,581,264		$ 2,294,936
Investments in two sigma funds, cost	$ 711,236		$ 770,191
Common stock authorized (in shares)	150,000,000	150,000,000	150,000,000	135,000,000	135,000,000	135,000,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock issued (in shares)	101,922,771	111,003,013	110,225,103	103,683,894	103,730,442	103,087,859
Common stock outstanding (in shares)	101,922,771	111,003,013	110,225,103	103,683,894	103,730,442	103,087,859
Total fixed maturities
Investments, amortized cost	$ 2,119,739		$ 1,867,499
Short-term investments
Investments, amortized cost	$ 461,525		$ 427,437
Common Class A
Common stock authorized (in shares)	28,644,807	28,644,807	28,644,807	53,993,690	53,993,690	53,993,690
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock issued (in shares)	19,520,078	28,644,807	28,644,807	30,520,078	30,520,078	30,520,078
Common stock outstanding (in shares)	19,520,078	28,644,807	28,644,807	30,520,078	30,520,078	30,520,078
Common Class B
Common stock authorized (in shares)	72,837,352	72,337,352	72,337,352	50,480,684	50,480,684	50,480,684
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock issued (in shares)	57,358,464	56,813,977	56,036,067	42,638,190	42,684,738	42,042,155
Common stock outstanding (in shares)	57,358,464	56,813,977	56,036,067	42,638,190	42,684,738	42,042,155
Common Class C
Common stock authorized (in shares)	25,044,229	25,544,229	25,544,229	30,525,626	30,525,626	30,525,626
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock issued (in shares)	25,044,229	25,544,229	25,544,229	30,525,626	30,525,626	30,525,626
Common stock outstanding (in shares)	25,044,229	25,544,229	25,544,229	30,525,626	30,525,626	30,525,626

XML

Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues
Gross premiums written	$ 603,304	$ 504,960	$ 1,325,245	$ 1,043,124
Reinsurance premiums ceded	(128,236)	(120,252)	(335,297)	(309,918)
Net premiums written	475,068	384,708	989,948	733,206
Net change in unearned premiums	(56,304)	(53,248)	(185,881)	(117,844)
Net premiums earned	418,764	331,460	804,067	615,362
Net realized and unrealized gains (losses) on investments	151,251	19,406	406,622	54,539
Net investment income (loss)	13,720	7,291	26,338	9,650
Total net realized and unrealized gains (losses) on investments and net investment income (loss)	164,971	26,697	432,960	64,189
Other income (loss)	5,989	2,420	13,470	5,452
Net foreign exchange gains (losses)	(1,782)	(3,341)	(3,911)	(5,387)
Total revenues	587,942	357,236	1,246,586	679,616
Expenses
Losses and loss adjustment expenses	214,494	179,416	446,846	327,977
Acquisition costs	96,305	76,856	180,858	141,995
General and administrative expenses	64,917	49,234	119,772	95,040
Amortization of intangible assets	3,317	2,305	6,569	5,075
Interest expense	6,031	5,189	11,738	10,718
Total expenses	385,064	313,000	765,783	580,805
Income (loss) before income tax	202,878	44,236	480,803	98,811
Income tax expense (benefit)	2,496	2,948	3,089	4,521
Net income (loss)	200,382	41,288	477,714	94,290
Net income (loss) attributable to non-controlling interest	69,297	4,501	189,455	6,011
Net income (loss) and other comprehensive income (loss) attributable to common shareholders	$ 131,085	$ 36,787	$ 288,259	$ 88,279
Per share data
Basic income (loss) per share attributable to common shareholders (in dollars per share)	$ 1.24	$ 0.35	$ 2.66	$ 0.85
Diluted income (loss) per share attributable to common shareholders (in dollars per share)	$ 1.20	$ 0.35	$ 2.57	$ 0.84

XML

Unaudited Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common shares	Additional paid-in capital	Accumulated other comprehensive income (loss)	Retained earnings
Balance, beginning of period at Dec. 31, 2022		$ 1,030	$ 1,120,242	$ (4,441)	$ 547,352
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares		8	(7)
Repurchases of common shares		(2)	(1,776)		(469)
Share compensation expense			6,107		(4,169)
Net income (loss)	$ 94,290				94,290
Net income attributable to non-controlling interest	(6,011)				(6,011)
Balance, end of period at Jun. 30, 2023	1,752,154	1,036	1,124,566	(4,441)	630,993
Balance, beginning of period at Mar. 31, 2023		1,037	1,121,334	(4,441)	598,510
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares		1	0
Repurchases of common shares		(2)	(502)		(135)
Share compensation expense			3,734		(4,169)
Net income (loss)	41,288				41,288
Net income attributable to non-controlling interest	(4,501)				(4,501)
Balance, end of period at Jun. 30, 2023	1,752,154	1,036	1,124,566	(4,441)	630,993
Balance, beginning of period at Dec. 31, 2023	2,047,850	1,101	1,249,817	(4,441)	801,373
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares		11	386
Repurchases of common shares		(93)	(94,044)		(19,248)
Share compensation expense			15,426		0
Net income (loss)	477,714				477,714
Net income attributable to non-controlling interest	(189,455)				(189,455)
Balance, end of period at Jun. 30, 2024	2,238,547	1,019	1,171,585	(4,441)	1,070,384
Balance, beginning of period at Mar. 31, 2024		1,109	1,255,055	(4,441)	957,782
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares		1	(1)
Repurchases of common shares		(91)	(91,602)		(18,483)
Share compensation expense			8,133		0
Net income (loss)	200,382				200,382
Net income attributable to non-controlling interest	(69,297)				(69,297)
Balance, end of period at Jun. 30, 2024	$ 2,238,547	$ 1,019	$ 1,171,585	$ (4,441)	$ 1,070,384

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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities
Net income (loss)	$ 477,714	$ 94,290
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	7,455	5,794
Share compensation expense	15,426	6,107
Net realized (gains) losses on investments	(288,934)	10,040
Change in net unrealized (gains) losses on investments	(117,688)	(64,579)
Other items	1,648	(2,802)
Change in:
Premiums receivable	(274,848)	(233,605)
Paid losses recoverable	(2,488)	(41,873)
Deferred acquisition costs	(46,384)	(30,133)
Prepaid reinsurance	(105,268)	(87,505)
Unpaid losses and loss adjustment expenses recoverable	768	14,923
Other assets	8,018	6,235
Reserve for losses and loss adjustment expenses	212,856	42,825
Unearned premiums	291,149	206,535
Reinsurance balances payable	127,323	137,358
Accounts payable and accrued expenses and other	7,891	12,301
Net cash provided by (used in) operating activities	314,638	75,911
Investing activities
Proceeds from redemptions from Two Sigma Funds	1,518,920	1,267,647
Contributions to Two Sigma Funds	(1,186,327)	(1,349,973)
Purchases of fixed maturity investments	(910,380)	(476,046)
Proceeds from sales, redemptions and maturity of fixed maturity investments	657,390	284,572
Purchases of short-term investments	(819,859)	(732,261)
Proceeds from sales of short-term investments	806,005	690,970
Change in receivables for investments sold	30,112	335
Change in payables for investments purchased	44,674	(29,425)
Other	(10,626)	(7,741)
Net cash provided by (used in) investing activities	129,909	(351,922)
Financing activities
Issuance of common shares	11	8
Repurchases of common shares	(113,385)	(2,247)
Contribution of additional paid-in capital	386	(7)
Withdrawal of non-controlling interest	(112,313)	(6,006)
Net cash provided by (used in) financing activities	(225,301)	(8,252)
Effect of exchange rate changes on cash and cash equivalents and restricted cash and cash equivalents	(5,254)	2,278
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents	213,992	(281,985)
Cash and cash equivalents and restricted cash and cash equivalents, beginning of period	900,860	1,207,203
Cash and cash equivalents and restricted cash and cash equivalents, end of period	$ 1,114,852	$ 925,218

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Organization

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Organization

Hamilton Insurance Group, Ltd. ("Hamilton Group", the "Group" or the "Company"), the ultimate group holding company, was incorporated on September 4, 2013, under the laws of Bermuda. On November 14, 2023, the Company consummated an initial public offering ("IPO") of its Class B common shares, which are listed on the NYSE.

Our Bermuda operations are led by Hamilton Re, Ltd. ("Hamilton Re"), a registered Class 4 insurer incorporated in Bermuda. Hamilton Re writes property, casualty, and specialty insurance and reinsurance on a global basis.

Hamilton Re US is a tax partnership that was formed pursuant to an arrangement between Hamilton Re and its Bermuda-incorporated affiliate, Hamilton ILS Holdings Limited. The tax partnership is treated as a U.S. corporation for U.S. tax purposes and is registered with the U.S. Internal Revenue Service, such that underwriting and investment income derived from capital allocated to Hamilton Re US are subject to U.S. taxation.

Ada Capital Management Limited ("ACML"), a wholly owned insurance agent incorporated and regulated in Bermuda, is authorized to underwrite on behalf of Ada Re, Ltd. ("Ada Re").

Our London operations are comprised of Hamilton Managing Agency Limited ("HMA"), a Lloyd’s managing agency, which manages our wholly aligned Syndicate 4000 and a third-party funded Lloyd’s Syndicate. Syndicate 4000 operates in the Lloyd’s market and underwrites property, casualty, and specialty insurance and reinsurance business on a subscription basis.

Our Dublin operations are comprised of Hamilton Insurance Designated Activity Company ("HIDAC"), a Dublin-based insurer with a U.K. branch and extensive licensing in the United States, including excess and surplus lines and reinsurance in all 50 states.

Hamilton Managing General Agency Americas LLC ("HMGA Americas") is licensed throughout the United States and underwrites on behalf of the Group's London, Dublin and Bermuda operations solely in respect of Hamilton Re US, providing access from the U.S. to the Lloyd's market, the Group's rated Irish carrier and the Group's Bermuda balance sheet, respectively.

Hamilton Select Insurance Inc. ("Hamilton Select") is a U.S. domestic excess and surplus lines carrier incorporated in Delaware and authorized to write excess and surplus business in all 50 states.

Two Sigma Hamilton Fund, LLC ("TS Hamilton Fund"), is a Delaware limited liability company. In 2013, Hamilton Re entered into a limited liability company agreement with TS Hamilton Fund and Two Sigma Principals, LLC (the "Managing Member") as the managing member of TS Hamilton Fund. Effective July 1, 2023, Hamilton Re has committed to an investment in TS Hamilton Fund in an amount up to the lesser of (i) $1.8 billion or (ii) 60% of Hamilton Group’s net tangible assets (previously equal to a minimum of 95% of the consolidated net tangible assets of Hamilton Group). TS Hamilton Fund has engaged Two Sigma Investments, LP ("Two Sigma"), a related party Delaware limited partnership, to serve as its investment manager. Two Sigma is a United States Securities and Exchange Commission registered investment adviser specializing in quantitative analysis (see Note 3, Investments for further details).

Unconsolidated Related Parties

Ada Re is a special purpose insurer funded by third party investors and formed to provide fully collateralized reinsurance and retrocession to both Hamilton Group and third-party cedants.

Easton Re has issued an industry loss index-triggered catastrophe bond that provides the Company's operating platforms with multi-year risk transfer capacity to protect against named storm risk in the United States and earthquake risk in the United States and Canada. See Note 6, Reinsurance, for further details.

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2024

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

There have been no material changes to the Company's significant accounting policies as described in its Annual Report on Form 10-K for the year ended December 31, 2023, (the "Form 10-K"), except as described below.

a.Basis of Presentation

These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and Article 10 of Regulation S-X, for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In addition, the year-end balance sheet data was derived from audited financial statements but does not include all disclosures required by GAAP. In the opinion of management, these unaudited condensed consolidated financial statements reflect all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the Company's financial position and results of operations as at the end of, and for, the periods presented.

These financial statements include the accounts of Hamilton Group, Hamilton Re, Hamilton U.K. Holdings Limited, Hamilton Select, HMGA Americas, ACML, and TS Hamilton Fund (collectively the "Company"). All significant intercompany transactions and balances have been eliminated on consolidation. Certain comparative information has been reclassified to conform to the current year presentation.

b.Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The major estimates recorded in the Company’s financial statements include, but are not limited to, premiums written, provisions for estimated future credit losses, the reserve for losses and loss adjustment expenses and the fair value of investments.

c.Recent Accounting Pronouncements

Recently Issued Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07 Segment Reporting, which enhances the qualitative and quantitative disclosures related to reportable segments. The guidance is effective for annual periods beginning after December 15, 2023 and interim periods beginning after December 15, 2024. Early adoption is permitted. This guidance will not have a material impact on the Company's results of operations, financial position, or cash flows.

In December 2023, the FASB issued ASU 2023-09 Income Taxes, which enhances the quantitative annual disclosures related to tax rate reconciliations and income taxes paid and requires additional qualitative discussion of applicable tax jurisdictions and the nature of certain reconciling items. The guidance is effective for annual periods beginning after December 15, 2024. Early adoption is permitted. This guidance will not have a material impact on the Company's results of operations, financial position, or cash flows.

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Investments

6 Months Ended

Jun. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Investments

Investments

Fixed Maturity and Short-Term Investments - Trading

The Company’s fixed maturity and short-term investments at June 30, 2024 and December 31, 2023 are as follows:

	2024
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Fixed maturities:
U.S. government treasuries	$	702,657	$	966	$	(15,523)	$	688,100
U.S. states, territories and municipalities	4,477		—		(235)		4,242
Non-U.S. sovereign governments and supranationals	74,597		615		(1,508)		73,704
Corporate	1,023,626		3,243		(20,357)		1,006,512
Residential mortgage-backed securities - Agency	236,874		93		(16,231)		220,736
Residential mortgage-backed securities - Non-agency	5,961		9		(674)		5,296
Commercial mortgage-backed securities - Non-agency	33,355		4		(1,033)		32,326
Other asset-backed securities	38,192		52		(230)		38,014
Total fixed maturities	2,119,739		4,982		(55,791)		2,068,930
Short-term investments	461,525		2,017		—		463,542
Total	$	2,581,264	$	6,999	$	(55,791)	$	2,532,472

	2023
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Fixed maturities:
U.S. government treasuries	$	717,134	$	5,137	$	(14,021)	$	708,250
U.S. states, territories and municipalities	4,656		—		(286)		4,370
Non-U.S. sovereign governments and supranationals	55,662		2,175		(1,591)		56,246
Corporate	877,493		8,443		(22,060)		863,876
Residential mortgage-backed securities - Agency	180,661		435		(12,583)		168,513
Residential mortgage-backed securities - Non-agency	5,639		16		(671)		4,984
Commercial mortgage-backed securities - Non-agency	11,473		—		(1,050)		10,423
Other asset-backed securities	14,781		20		(195)		14,606
Total fixed maturities	1,867,499		16,226		(52,457)		1,831,268
Short-term investments	427,437		1,441		—		428,878
Total	$	2,294,936	$	17,667	$	(52,457)	$	2,260,146

Contractual Maturities Summary

The following table presents contractual maturities of fixed maturity securities at June 30, 2024. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	2024
($ in thousands)	Amortized Cost		Fair Value
Due less than one year	$	134,327	$	131,817
Due after one through five years	1,405,050		1,377,669
Due after five through ten years	262,173		259,858
Due after ten years	3,807		3,214
Mortgage-backed	276,190		258,358
Asset-backed	38,192		38,014
Total	$	2,119,739	$	2,068,930

Investments in Two Sigma Funds

The Company’s investments in Two Sigma Funds at June 30, 2024 and December 31, 2023 are as follows:

	2024						2023
($ in thousands)	Cost		Net Unrealized Gains (Losses)		Fair Value		Cost		Net Unrealized Gains (Losses)		Fair Value
Two Sigma Futures Portfolio, LLC (FTV)	$	319,216	$	52,179	$	371,395	$	433,911	$	(38,105)	$	395,806
Two Sigma Spectrum Portfolio, LLC (STV)	231,538		115,187		346,725		193,299		88,228		281,527
Two Sigma Equity Spectrum Portfolio, LLC    (ESTV)	160,482		45,080		205,562		142,981		31,156		174,137
Total	$	711,236	$	212,446	$	923,682	$	770,191	$	81,279	$	851,470

The Company, through its investments in FTV, STV and ESTV, seeks to achieve absolute dollar-denominated returns on a substantial capital base, primarily by combining multiple hedged and leveraged systematic investment strategies with proprietary risk management and execution techniques. These systematic strategies include, but are not limited to, technical and statistically-based, fundamental-based, event-based, market condition-based and spread-based strategies as well as contributor-based and/or sentiment-based strategies and blended strategies. FTV primarily utilizes systematic strategies to gain broad macro exposure to FX, fixed income, equity and credit indices, and commodities, predominantly by trading futures, spots, forwards, options, swaps, cash bonds and exchange traded products. STV primarily utilizes systematic strategies to trade U.S.-listed equity securities and related instruments and derivatives. ESTV primarily utilizes systematic strategies to trade non-U.S.-listed equity securities and related instruments and derivatives. At June 30, 2024, the Company owns an 18.4%, 18.1% and 10.0% interest in each of the FTV, STV and ESTV funds, respectively.

The following table summarizes certain investments of FTV, STV and ESTV where TS Hamilton Fund’s proportionate share of the fair value of the investment represents more than 5% of TS Hamilton Fund’s members’ equity at June 30, 2024:

	2024
($ in thousands)	Principal / Shares (1)	Fair Value (1)		% of Members' Equity
State Street Treasury Obligations Money Market Fund	183,197	$	183,197	9.6	%
U.S. Treasury Securities, 0.0000%- 4.6250%, due 7/2/2024 - 5/15/2054	2,026,171	$	2,024,274	106.1	%
U.S. Treasury Securities, 4.2500%- 4.6250%, due 6/30/2026 - 5/15/2054	(338,908)	$	(338,626)	(17.8)	%

(1) Values represent TS Hamilton Fund’s proportionate share of the aggregate of FTV, STV and ESTV total holdings.

Two Sigma and the Managing Member are related parties to the Company as described further in Note 1, Organization. Effective July 1, 2023, a revised investment management agreement with Two Sigma requires TS Hamilton Fund to incur a management fee of 2.5% of the non-managing members' equity in the net asset value of the TS Hamilton Fund per annum (previously 3%). The management fee for the three months ended June 30, 2024 and 2023 was $11.9 million and $12.1 million, respectively, and the management fee for the six months ended June 30, 2024 and 2023 was $23.2 million and $24.0 million, respectively.

Under the terms of the revised limited liability company agreement between Hamilton Re and the Managing Member, the Managing Member remains entitled to an incentive allocation equal to 30% of TS Hamilton Fund’s net profits, subject to high watermark provisions, and adjusted for withdrawals and any incentive allocation to the Managing Member. In the event there is a net loss during a quarter and a net profit during any subsequent quarter, the Managing Member is entitled to a modified incentive allocation whereby the regular incentive allocation will be reduced by 50% until subsequent cumulative net profits are credited in an amount equal to 200% of the previously allocated net losses. The Managing Member is also entitled to receive a revised additional incentive allocation as of the end of each fiscal year (or on any date Hamilton Re withdraws all or a portion of its capital), in an amount equal to 25% of the Excess Profits (previously 20%). "Excess Profits" for any given fiscal year (or other such accounting period) means the net profits over 10% for such fiscal year (previously 15%), net of management fees and expenses and gross of incentive allocations, but only after recouping previously unrecouped net losses. To the extent Hamilton Re contributes capital other than at the beginning of a fiscal year or withdraws capital other than at the end of a fiscal year, the additional incentive allocation hurdle with respect to such capital is prorated. The aggregate incentive allocation (inclusive of the additional incentive allocation) for the three months ended June 30, 2024 and 2023 was $69.3 million and $4.5 million, respectively, and the aggregate incentive allocation (inclusive of the additional incentive allocation) for the six months ended June 30, 2024 and 2023 was $189.4 million and $6.0 million, respectively.

Hamilton Re has a commitment with TS Hamilton Fund to maintain an amount up to the lesser of (i) $1.8 billion or

(ii) 60% of Hamilton Insurance Group’s net tangible assets in TS Hamilton Fund, such lesser amount, the "Minimum Commitment Amount", for a three-year period (the "Initial Term") and for rolling three-year periods thereafter (each such three-year period the "Commitment Period"), subject to certain circumstances and the liquidity options described below, with the Commitment Period ending on June 30, 2026. The Commitment Period consists of a 3-year rolling term that automatically renews on an annual basis unless Hamilton Re or the Managing Member provide advance notice of non-renewal.

The TS Hamilton Fund generally has two liquidity options, subject to Hamilton Re’s minimum investment commitment, which are as follows:

•Monthly liquidity - Subject to certain conditions, Hamilton Re may request a whole or partial withdrawal of its capital account, no later than fifteen days prior to the end of a calendar month, effective as of the last day of such calendar month.

•Daily liquidity - Subject to certain limited circumstances, including the need to meet obligations pursuant to Hamilton Re’s underwriting operations, Hamilton Re may request a withdrawal of all or a portion of its capital account upon at least one business day’s written notice of such withdrawal request date to the Managing Member.

At its discretion, the Managing Member may permit or require Hamilton Re to withdraw all or any portion of its respective capital account at other times, or waive or reduce certain notice periods, or allow a notice to be revoked. The Managing Member may withdraw all or any portion of its capital account at any time.

Total Net Realized and Unrealized Gains (Losses) on Investments and Net Investment Income (Loss)

The components of total net realized and unrealized gains (losses) on investments and net investment income (loss) for the three and six months ended June 30, 2024 and 2023 are as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Net realized and unrealized gains (losses) on investments:
Net realized gains (losses) on investments	$	139,489	$	27,612	$	288,934	$	(10,040)
Change in net unrealized gains (losses) on investments	11,762		(8,206)		117,688		64,579
Net realized and unrealized gains (losses) on investments	151,251		19,406		406,622		54,539
Net investment income (loss):
Fixed maturities	19,009		10,815		35,960		18,970
Short-term investments	41		98		40		249
TS Hamilton Fund	2,917		6,025		5,932		9,912
Cash and cash equivalents	4,095		2,412		8,210		4,725
Other	415		697		1,167		1,120
Interest and other	26,477		20,047		51,309		34,976
Management fees	(12,482)		(12,515)		(24,433)		(24,849)
Other expenses	(275)		(241)		(538)		(477)
Net investment income (loss)	13,720		7,291		26,338		9,650
Total net realized and unrealized gains (losses) on investments and net investment income (loss)	$	164,971	$	26,697	$	432,960	$	64,189

Net Realized Gains (Losses) on Investments

The components of net realized gains (losses) on investments for the three and six months ended June 30, 2024 and 2023 are as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Fixed maturities and short-term investments	$	(1,695)	$	2,574	$	(4,636)	$	(3,108)
TS Hamilton Fund	140,900		24,827		293,286		(7,143)
Other	284		211		284		211
Net realized gains (losses) on investments	$	139,489	$	27,612	$	288,934	$	(10,040)

Net Unrealized Gains (Losses) on Investments

The components of net unrealized gains (losses) on investments for the three and six months ended June 30, 2024 and 2023 are as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Fixed maturities and short-term investments	$	(1,608)	$	(19,539)	$	(14,599)	$	3,019
TS Hamilton Fund	13,370		11,333		132,287		61,560
Net unrealized gains (losses) on investments	$	11,762	$	(8,206)	$	117,688	$	64,579

Pledged Assets

At June 30, 2024 and December 31, 2023, pledged investments at fair value were comprised of $237.9 million and $232.2 million, respectively, securing a portion of the capital requirements for business written at Lloyd's, $88.2 million and $54.1 million, respectively, held in trust accounts for the benefit of U.S. state regulatory authorities and $36.6 million and $37.2 million respectively, securing other underwriting obligations. In addition, certain investments were pledged as security for letter of credit facilities as described further in Note 9, Debt and Credit Facilities.

At June 30, 2024 and December 31, 2023, restricted cash and cash equivalents balances were comprised of $94.1 million and $97.4 million, respectively, securing other underwriting obligations, $2.7 million and $7.2 million, respectively, securing a portion of the capital requirements for business written at Lloyd's, $1.5 million and $1.5 million, respectively, in trust accounts for the benefit of regulatory authorities, and $Nil and $0.3 million, respectively, of escrow funds.

Total cash and cash equivalents and restricted cash and cash equivalents of $1.1 billion presented in the statement of cash flows was comprised of cash and cash equivalents of $1.0 billion and restricted cash and cash equivalents of $98.3 million on the balance sheet at June 30, 2024. Total cash and cash equivalents and restricted cash and cash equivalents of $900.9 million presented in the statement of cash flows at December 31, 2023 was comprised of cash and cash equivalents of $794.5 million and restricted cash and cash equivalents of $106.4 million on the balance sheet.

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Fair Value

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value

Fair Value

Financial Instruments Subject to Fair Value Measurements

Accounting guidance over fair value measurements requires that a fair value measurement reflect the assumptions market participants would use in pricing an asset or liability based on the best information available. Assumptions include the risks inherent in a particular valuation technique (such as a pricing model) and/or the risks inherent in the inputs to the model. The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (the "exit price"). Instruments that the Company owns are marked to bid prices.

Basis of Fair Value Measurements

Fair value measurement accounting guidance also establishes a fair value hierarchy that prioritizes the inputs to the respective valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). An asset or liability’s classification within the fair value hierarchy is based on the lowest level of significant input to its valuation. The three levels of the fair value hierarchy are:

•Level 1 - Inputs that reflect unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date;

•Level 2 - Inputs other than quoted prices included within Level 1 that are observable for the asset or liability either directly or indirectly, including inputs in markets that are not considered to be active; and

•Level 3 - Inputs that are both significant to the fair value measurement and unobservable.

Assets Recorded at Fair Value - Fixed Maturity and Short-term Investments

The following section describes the valuation methodologies used to determine the fair value of the Company’s fixed maturity and short-term investments by asset class:

•U.S. government treasuries: fair value based on observable market inputs such as quoted prices, reported trades, quoted prices for similar issuances and benchmark yields;

•U.S. states, territories and municipalities: fair value based on observable market inputs such as quoted market prices, quoted prices for similar securities, benchmark yields and credit spreads;

•Non-U.S. sovereign governments and supranationals: fair value based on observable market inputs such as quoted market prices, quoted prices for similar securities and models with observable inputs such as benchmark yields and credit spreads, and then, where applicable, converted to U.S. dollars using an exchange rate from a nationally recognized source;

•Corporate: fair value based on observable market inputs such as quoted market prices, quoted prices for similar securities, benchmark yields and credit spreads;

•Asset-backed and mortgage-backed securities: fair value based on observable inputs such as quoted prices, reported trades, quoted prices for similar issuances or benchmark yields and cash flow models using observable inputs such as prepayment speeds, collateral performance and default spreads; and

•Short-term investments: fair value based on observable market inputs such as quoted prices, reported trades, quoted prices for similar issuances and benchmark yields.

The following table presents the financial instruments measured at fair value on a recurring basis at June 30, 2024 and December 31, 2023:

	2024
($ in thousands)	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. government treasuries	$	—	$	688,100	$	—	$	688,100
U.S. states, territories and municipalities	—		4,242		—		4,242
Non-U.S. sovereign governments and supranationals	—		73,704		—		73,704
Corporate	—		1,006,512		—		1,006,512
Residential mortgage-backed securities - Agency	—		220,736		—		220,736
Residential mortgage-backed securities - Non-agency	—		5,296		—		5,296
Commercial mortgage-backed securities - Non-agency	—		32,326		—		32,326
Other asset-backed securities	—		38,014		—		38,014
Total fixed maturities	—		2,068,930		—		2,068,930
Short-term investments	—		463,542		—		463,542
Total	$	—	$	2,532,472	$	—	$	2,532,472

	2023
($ in thousands)	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. government treasuries	$	—	$	708,250	$	—	$	708,250
U.S. states, territories and municipalities	—		4,370		—		4,370
Non-U.S. sovereign governments and supranationals	—		56,246		—		56,246
Corporate	—		863,876		—		863,876
Residential mortgage-backed securities - Agency	—		168,513		—		168,513
Residential mortgage-backed securities - Non-agency	—		4,984		—		4,984
Commercial mortgage-backed securities - Non-agency	—		10,423		—		10,423
Other asset-backed securities	—		14,606		—		14,606
Total fixed maturities	—		1,831,268		—		1,831,268
Short-term investments	—		428,878		—		428,878
Total	$	—	$	2,260,146	$	—	$	2,260,146

The carrying values of cash and cash equivalents, restricted cash and cash equivalents, accrued investment income, receivables for investments sold, certain other assets, payables for investments purchased, and certain other liabilities approximate their fair values.

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Variable Interest Entities

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Variable Interest Entities

Variable Interest Entities

TS Hamilton Fund

TS Hamilton Fund meets the definition of a variable interest entity ("VIE") principally because the Managing Member does not hold substantive equity at risk in the entity but controls all of the decision making authority over it. Therefore, the Company assessed its ownership in the VIE to determine if it is the primary beneficiary. The Managing Member is a related party to the Company and collectively they hold all of the variable interest. The Company performed an assessment of all relevant facts and circumstances and determined that it is the entity within the related party group for whom substantially all of the activities of the VIE are conducted. As a result, the Company concluded that it is the primary beneficiary of TS Hamilton Fund.

Activity in the non-controlling interest of TS Hamilton Fund for the three and six months ended June 30, 2024 and 2023 was as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Balance - beginning of period	$	54,727	$	120	$	133	$	119
Withdrawals	(46,749)		(4,497)		(112,313)		(6,006)
Equity in earnings	13		4		34		5
Incentive allocation	69,284		4,497		189,421		6,006
Balance - end of period	$	77,275	$	124	$	77,275	$	124

The following table presents the total assets and total liabilities of TS Hamilton Fund at June 30, 2024 and December 31, 2023. Creditors or beneficial interest holders of TS Hamilton Fund have no recourse to the general credit of the Company as the Company’s obligation is limited to the amount of its committed investment.

($ in thousands)	2024		2023
Assets
Cash and cash equivalents	$	650,671	$	479,255
Short-term investments	463,542		428,878
Investments in Two Sigma Funds, at fair value	923,682		851,470
Receivables for investments sold	—		41,087
Interest and dividends receivable	1,029		966
Total assets	2,038,924		1,801,656
Liabilities
Accounts payable and accrued expenses	177		191
Withdrawal payable	43,030		6,480
Payable for investments purchased	87,716		62,440
Total liabilities	130,923		69,111
Total net assets managed by TS Hamilton Fund	$	1,908,001	$	1,732,545

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Reinsurance

6 Months Ended

Jun. 30, 2024

Insurance [Abstract]

Reinsurance

Reinsurance

The Company purchases reinsurance and other protection to manage its risk portfolio and to reduce its exposure to large losses. The Company currently has in place contracts that provide for recovery of a portion of certain loss and loss adjustment expenses, generally in excess of various retentions or on a proportional basis. Amounts recoverable under reinsurance contracts are recorded as assets. The Company remains liable to the extent that any reinsurance company fails to meet its obligations.

Allowance for Expected Credit Losses

Premiums receivable, paid losses recoverable, and unpaid losses and loss adjustment expenses recoverable comprise the Company's most significant credit exposures not carried at fair value. The Company has not historically experienced significant credit losses. In determining an allowance for these assets, the Company considers historical information in combination with counterparty financial strength ratings and the extent to which balances are collateralized. The Company assesses the risk of future default by evaluating current market conditions for the likelihood of default and calculates its provision for current expected credit losses under the probability of default and loss given default methodology.

Premiums Receivable

Premiums receivable are estimated based on policy terms and reports received from the underlying counterparties, supplemented by management's judgment. Due to the nature of the (re)insurance business, the Company routinely receives reports and premiums subsequent to the inception of the coverage period. At June 30, 2024, the Company’s premiums receivable balance, net of credit provisions of $2.0 million, was $933.2 million. At December 31, 2023, the Company’s premiums receivable balance, net of credit provisions of $3.0 million, was $658.4 million.

The following table provides a roll forward of the provision for current expected credit losses of the Company's premiums receivable for the three and six months ended June 30, 2024 and 2023:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Beginning balance	$	2,153	$	3,136	$	3,000	$	2,856
Increase (decrease) in allowance	(191)		(38)		(1,038)		242
Ending balance	$	1,962	$	3,098	$	1,962	$	3,098

Reinsurance Balances Recoverable

Reinsurance balances recoverable is comprised of amounts due from reinsurers based on the claim liabilities associated with the reinsured policy. The Company accrues amounts due from reinsurers based on estimated ultimate contract losses. At June 30, 2024, the Company’s paid and unpaid reinsurance recoverable balances net of credit provisions were $147.7 million and $1.2 billion, respectively, with a total corresponding provision for current expected credit losses of $0.8 million. At December 31, 2023, the Company’s paid and unpaid reinsurance recoverable balances net of credit provisions were $145.2 million and $1.2 billion, respectively, with a total corresponding provision for current expected credit losses of $0.7 million.

The following table provides a roll forward of the provision for current expected credit losses of the Company's reinsurance recoverable for the three and six months ended June 30, 2024 and 2023:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Beginning balance	$	709	$	792	$	687	$	777
Increase (decrease) in allowance	46		28		68		43
Ending balance	$	755	$	820	$	755	$	820

At June 30, 2024 and December 31, 2023, the distribution of the Company’s paid losses recoverable and unpaid losses and loss adjustment expenses recoverable as categorized by major rating agencies were as follows:

Classification	2024		2023
Collateralized	25.7	%	28.5	%
A- or better	74.0	%	71.0	%
Below A-	0.3	%	0.5	%
Total	100.0	%	100.0	%

At June 30, 2024 and December 31, 2023, the three largest balances by reinsurer accounted for 25%, 22% and 12%, and 27%, 20% and 12%, respectively, of paid losses recoverable and unpaid losses and loss adjustment expenses recoverable.

Loss Portfolio Transfer

On February 6, 2020, the Company entered into a loss portfolio transfer agreement (the "LPT"), under which the insurance liabilities arising from certain casualty risks for the Lloyd's Years of Account ("YOA") 2016, 2017 and 2018 were retroceded to a third party in exchange for total premium of $72.1 million. This transaction was accounted for as retroactive reinsurance under which cumulative ceded losses exceeding the LPT premium are recognized as a deferred gain liability and amortized into income over the settlement period of the ceded reserves in proportion to cumulative losses collected over the estimated ultimate reinsurance recoverable. The amount of the deferral is recalculated each reporting period based on updated ultimate loss estimates. Consequently, cumulative adverse development subsequent to the signing of the LPT may result in significant losses from operations until periods when the deferred gain is recognized as a benefit to earnings.

At June 30, 2024 and December 31, 2023, the balance of reinsurance recoverable on unpaid losses due under this LPT was $45.7 million and $49.8 million, respectively. Amortization of the deferred gain was income of $1.0 million and $3.1 million during the three months ended June 30, 2024 and 2023, respectively, and income of $1.9 million and $3.4 million during the six months ended June 30, 2024 and 2023, respectively, which was recorded through losses and loss adjustment expenses in accordance with the actual loss payments and updated estimates of ultimate losses of the subject business.

Catastrophe Bond Reinsurance

In December 2023, Hamilton Group sponsored an industry loss index-triggered catastrophe bond through the issuance of Series 2024-1 Class A Principal-at-Risk Variable Rate Notes by Bermuda-domiciled Easton Re Ltd. ("Easton Re"), which provide the Company's operating platforms with multi-year risk transfer capacity of $200 million to protect against named storm risk in the United States and earthquake risk in the United States and Canada. The risk period for Easton Re is from January 1, 2024 to December 31, 2026. The Company recorded reinsurance premiums ceded of $Nil and $14.6 million during the three and six months ended June 30, 2024, respectively.

In December 2020, Hamilton Group sponsored an industry loss index-triggered catastrophe bond through the issuance of Series 2020-1 Class A Principal-at-Risk Variable Rate Notes by Singapore-domiciled Easton Re Pte, Ltd. (also "Easton Re"). Easton Re provided the Company's operating platforms with multi-year risk transfer capacity of $150 million to protect against named storm and earthquake risk in the United States. The risk period for Easton Re was from January 1, 2021 to December 31, 2023. The Company recorded reinsurance premiums ceded of $Nil and $7.2 million during the three and six months ended June 30, 2023, respectively.

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Reserve for Losses and Loss Adjustment Expenses

6 Months Ended

Jun. 30, 2024

Insurance [Abstract]

Reserve for Losses and Loss Adjustment Expenses

Reserve for Losses and Loss Adjustment Expenses

The following table presents a reconciliation of unpaid losses and loss adjustment expenses ("LAE") for the six months ended June 30, 2024 and 2023:

($ in thousands)	2024		2023
Gross unpaid losses and loss adjustment expenses, beginning of period	$	3,030,037	$	2,856,275
Reinsurance recoverable on unpaid losses	1,161,077		1,177,863
Net unpaid losses and loss adjustment expenses, beginning of period	1,868,960		1,678,412
Net losses and loss adjustment expenses incurred in respect of losses occurring in:
Current year	436,348		330,458
Prior years	10,498		(2,481)
Total incurred	446,846		327,977
Net losses and loss adjustment expenses paid in respect of losses occurring in:
Current year	6,787		10,431
Prior years	224,576		282,252
Total paid	231,363		292,683
Foreign currency revaluation and other	(1,859)		22,454
Net unpaid losses and loss adjustment expenses, end of period	2,082,584		1,736,160
Reinsurance recoverable on unpaid losses	1,160,309		1,162,940
Gross unpaid losses and loss adjustment expenses, end of period	$	3,242,893	$	2,899,100

Net unfavorable prior year development of $10.5 million for the six months ended June 30, 2024 was primarily driven by attritional losses. See below for further details:

•Net unfavorable development of $12.6 million on specialty contracts, primarily driven by two specific large losses; and

•Net unfavorable development of $3.9 million on casualty contracts, due to higher than expected claims development across certain classes; partially offset by

•Net favorable development of $4.4 million on property contracts, driven by overall lower than expected claims development across various classes; and

•In addition, casualty business protected by the LPT discussed in Note 6, Reinsurance, benefited from $1.9 million in amortization of the associated deferred gain, partially offset by unfavorable development in the underlying reserves of $0.3 million, for a total net positive earnings impact of $1.6 million.

Net favorable prior year development of $2.5 million for the six months ended June 30, 2023 was comprised of $3.6 million of favorable prior year development on attritional losses and $1.1 million of unfavorable prior year development on catastrophe losses. See below for further details:

•Net favorable development of $5.3 million on specialty contracts, driven by lower than expected claims development across various classes; and

•Net favorable development of $1.2 million on casualty lines of business, primarily related to lower than expected claims development across various classes; offset by

•Net unfavorable development of $6.1 million on property contracts, primarily driven by higher than expected claims development relating to Winterstorm Elliot, as well as development in exited lines; and

•In addition, casualty business protected by the LPT discussed in Note 6, Reinsurance, benefited from $3.4 million in amortization of the associated deferred gain, partially offset by unfavorable development in the underlying reserves of $1.3 million, for a total net positive earnings impact of $2.1 million.

Reinsurance recoverable on unpaid losses related to the LPT discussed in Note 6, Reinsurance, was recognized for each of the six months ended June 30, 2024 and 2023 in the reconciliation of beginning and ending gross and net loss and LAE reserves presented above.

The Company amortized acquisition costs of $96.3 million and $76.9 million for the three months ended June 30, 2024 and 2023, respectively, and $180.9 million and $142.0 million for the six months ended June 30, 2024 and 2023, respectively.

Baltimore Bridge

The estimate of net reserves for losses and loss adjustment expenses related to the Francis Scott Key Baltimore Bridge collapse on March 26, 2024 is subject to significant uncertainty. As at June 30, 2024 and December 31, 2023, our recorded reserves totaled $37.9 million and $Nil, respectively.

Ukraine Conflict

Our net reserves for losses and loss adjustment expenses related to the ongoing Ukraine conflict also remain subject to significant uncertainty. As at June 30, 2024 and December 31, 2023, our recorded reserves totaled $64.1 million and $64.9 million, respectively.

Covid-19

Our Covid-19 losses also remain subject to significant uncertainty. As at June 30, 2024 and December 31, 2023, our recorded reserves relating to Covid-19 totaled $15.6 million and $14.1 million, respectively.

While the Company believes, based on current facts and circumstances, that its estimates of net reserves for losses and loss adjustment expenses are adequate for losses and loss adjustment expenses that have been incurred at June 30, 2024, the Company will continue to monitor its assumptions as new information becomes available and will adjust its estimate of net reserves for losses and loss adjustment expenses as appropriate. Actual ultimate losses for these events may differ materially from the Company's current estimates.

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Segment Reporting

6 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Segment Reporting

Segment Reporting

The Company has determined its reportable business segments based on the information used by management in assessing performance and allocating resources to underwriting operations and has identified two reportable business segments - International and Bermuda. Each of the Company's identified reportable segments has a Chief Executive Officer who is responsible for the overall profitability of their segment and who regularly reports and is directly accountable to the chief operating decision maker: the Chief Executive Officer of the consolidated group.

The Company evaluates the performance of reportable segments based on their respective underwriting income or loss. Underwriting income or loss is calculated as net premiums earned less losses and loss adjustment expenses, acquisition costs, and other underwriting expenses, net of third party fee income. General and administrative expenses not incurred by the reportable segments are included in corporate and other expenses as part of the reconciliation of net underwriting income or loss to net income or loss attributable to common shareholders. As the Company does not manage its assets by reportable segment, investment income and assets are not allocated to reportable segments.

The Company's core business is underwriting and its underwriting results are reflected in its reportable segments: (1) International, which is comprised of property, casualty and specialty insurance and reinsurance classes of business originating from the Company’s London, Dublin, and Hamilton Select operations; and (2) Bermuda, which is comprised of property, casualty and specialty insurance and reinsurance classes of business originating from Hamilton Re, Bermuda and Hamilton Re US and subsidiaries. The Company considers many factors, including the nature of each segment’s products, client types, production sources, distribution methods and the regulatory environment, in determining the aggregated operating segments.

Corporate includes net realized and unrealized gains (losses) on investments, net investment income (loss), other income (loss) not incurred by the reportable segments, net foreign exchange gains (losses), general and administrative expenses not incurred by the reportable segments, amortization of intangible assets, interest expense, and income tax expense (benefit).

($ in thousands)
Three Months Ended June 30, 2024	International			Bermuda			Corporate		Total
Gross premiums written	$	311,616		$	291,688		$	—	$	603,304
Net premiums written	$	234,305		$	240,763		$	—	$	475,068
Net premiums earned	$	215,643		$	203,121		$	—	$	418,764
Third party fee income	3,798			2,191			—		5,989
Losses and loss adjustment expenses	112,884			101,610			—		214,494
Acquisition costs	53,157			43,148			—		96,305
Other underwriting expenses	33,972			14,683			—		48,655
Underwriting income (loss)	$	19,428		$	45,871		$	—	$	65,299
Net realized and unrealized gains (losses) on investments							151,251		151,251
Net investment income (loss)							13,720		13,720
Net foreign exchange gains (losses)							(1,782)		(1,782)
Corporate expenses							(16,262)		(16,262)
Amortization of intangible assets							(3,317)		(3,317)
Interest expense							(6,031)		(6,031)
Income (loss) before income tax									202,878
Income tax (expense) benefit							(2,496)		(2,496)
Net income (loss)									200,382
Net income (loss) attributable to non-controlling interest							69,297		69,297
Net income (loss) attributable to common shareholders									$	131,085
Key Ratios
Attritional loss ratio - current year	52.5		%	50.5		%			51.6		%
Attritional loss ratio - prior year development	(0.2)		%	(0.5)		%			(0.4)		%
Catastrophe loss ratio - current year	0.0		%	0.0		%			0.0		%
Catastrophe loss ratio - prior year development	0.0		%	0.0		%			0.0		%
Loss and loss adjustment expense ratio	52.3		%	50.0		%			51.2		%
Acquisition cost ratio	24.7		%	21.2		%			23.0		%
Other underwriting expense ratio	14.0		%	6.2		%			10.2		%
Combined ratio	91.0		%	77.4		%			84.4		%

($ in thousands)
Three Months Ended June 30, 2023	International			Bermuda			Corporate		Total
Gross premiums written	$	277,796		$	227,164		$	—	$	504,960
Net premiums written	$	197,047		$	187,661		$	—	$	384,708
Net premiums earned	$	176,636		$	154,824		$	—	$	331,460
Third party fee income	2,401			48			—		2,449
Losses and loss adjustment expenses	87,575			91,841			—		179,416
Acquisition costs	47,260			29,596			—		76,856
Other underwriting expenses	29,540			13,203			—		42,743
Underwriting income (loss)	$	14,662		$	20,232		$	—	$	34,894
Net realized and unrealized gains (losses) on investments							19,406		19,406
Net investment income (loss)							7,291		7,291
Other income (loss), excluding third party fee income							(29)		(29)
Net foreign exchange gains (losses)							(3,341)		(3,341)
Corporate expenses							(6,491)		(6,491)
Amortization of intangible assets							(2,305)		(2,305)
Interest expense							(5,189)		(5,189)
Income (loss) before income tax									44,236
Income tax (expense) benefit							(2,948)		(2,948)
Net income (loss)									41,288
Net income (loss) attributable to non-controlling interest							4,501		4,501
Net income (loss) attributable to common shareholders									$	36,787
Key Ratios
Attritional loss ratio - current year	52.9		%	48.9		%			51.0		%
Attritional loss ratio - prior year development	(3.3)		%	0.3		%			(1.6)		%
Catastrophe loss ratio - current year	0.9		%	9.8		%			5.0		%
Catastrophe loss ratio - prior year development	(0.9)		%	0.3		%			(0.3)		%
Loss and loss adjustment expense ratio	49.6		%	59.3		%			54.1		%
Acquisition cost ratio	26.8		%	19.1		%			23.2		%
Other underwriting expense ratio	15.4		%	8.5		%			12.2		%
Combined ratio	91.8		%	86.9		%			89.5		%

($ in thousands)
Six Months Ended June 30, 2024	International			Bermuda			Corporate		Total
Gross premiums written	$	632,457		$	692,788		$	—	$	1,325,245
Net premiums written	$	419,338		$	570,610		$	—	$	989,948
Net premiums earned	$	412,456		$	391,611		$	—	$	804,067
Third party fee income	7,387			6,083			—		13,470
Losses and loss adjustment expenses	229,046			217,800			—		446,846
Acquisition costs	100,876			79,982			—		180,858
Other underwriting expenses	65,174			26,834			—		92,008
Underwriting income (loss)	$	24,747		$	73,078		$	—	$	97,825
Net realized and unrealized gains (losses) on investments							406,622		406,622
Net investment income (loss)							26,338		26,338
Net foreign exchange gains (losses)							(3,911)		(3,911)
Corporate expenses							(27,764)		(27,764)
Amortization of intangible assets							(6,569)		(6,569)
Interest expense							(11,738)		(11,738)
Income (loss) before income tax									480,803
Income tax (expense) benefit							(3,089)		(3,089)
Net income (loss)									477,714
Net income (loss) attributable to non-controlling interest							189,455		189,455
Net income (loss) attributable to common shareholders									$	288,259
Key Ratios
Attritional loss ratio - current year	54.2		%	54.3		%			54.3		%
Attritional loss ratio - prior year development	1.3		%	1.3		%			1.3		%
Catastrophe loss ratio - current year	0.0		%	0.0		%			0.0		%
Catastrophe loss ratio - prior year development	0.0		%	0.0		%			0.0		%
Loss and loss adjustment expense ratio	55.5		%	55.6		%			55.6		%
Acquisition cost ratio	24.5		%	20.4		%			22.5		%
Other underwriting expense ratio	14.0		%	5.3		%			9.8		%
Combined ratio	94.0		%	81.3		%			87.9		%

($ in thousands)
Six Months Ended June 30, 2023	International			Bermuda			Corporate		Total
Gross premiums written	$	524,909		$	518,215		$	—	$	1,043,124
Net premiums written	$	319,067		$	414,139		$	—	$	733,206
Net premiums earned	$	326,151		$	289,211		$	—	$	615,362
Third party fee income	5,302			150			—		5,452
Losses and loss adjustment expenses	157,967			170,010			—		327,977
Acquisition costs	84,452			57,543			—		141,995
Other underwriting expenses	58,002			23,884			—		81,886
Underwriting income (loss)	$	31,032		$	37,924		$	—	$	68,956
Net realized and unrealized gains (losses) on investments							54,539		54,539
Net investment income (loss)							9,650		9,650
Net foreign exchange gains (losses)							(5,387)		(5,387)
Corporate expenses							(13,154)		(13,154)
Amortization of intangible assets							(5,075)		(5,075)
Interest expense							(10,718)		(10,718)
Income (loss) before income tax									98,811
Income tax (expense) benefit							(4,521)		(4,521)
Net income (loss)									94,290
Net income (loss) attributable to non-controlling interest							6,011		6,011
Net income (loss) attributable to common shareholders									$	88,279
Key Ratios
Attritional loss ratio - current year	51.6		%	48.5		%			50.1		%
Attritional loss ratio - prior year development	(3.8)		%	3.0		%			(0.6)		%
Catastrophe loss ratio - current year	0.4		%	7.1		%			3.6		%
Catastrophe loss ratio - prior year development	0.2		%	0.2		%			0.2		%
Loss and loss adjustment expense ratio	48.4		%	58.8		%			53.3		%
Acquisition cost ratio	25.9		%	19.9		%			23.1		%
Other underwriting expense ratio	16.2		%	8.2		%			12.4		%
Combined ratio	90.5		%	86.9		%			88.8		%

The following table presents gross premiums written by the geographical location of the Company's subsidiaries for the three and six months ended June 30, 2024 and 2023:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
International
Lloyd's of London	$	199,378	$	169,463	$	397,959	$	318,171
Ireland	85,053		90,968		184,126		174,731
U.S.	27,185		17,365		50,372		32,007
Total International	311,616		277,796		632,457		524,909
Bermuda	291,688		227,164		692,788		518,215
Total	$	603,304	$	504,960	$	1,325,245	$	1,043,124

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Debt and Credit Facilities

6 Months Ended

Jun. 30, 2024

Debt Disclosure [Abstract]

Debt and Credit Facilities

Debt and Credit Facilities

Debt

On June 23, 2022, Hamilton Group renewed its unsecured $150 million term loan credit arrangement, as amended from time to time (the "Facility"), with various lenders as arranged by Wells Fargo Securities, LLC. All or a portion of the loan issued under the Facility bears interest at either (a) the Base Rate plus the Applicable Margin or (b) the Adjusted Term Secured Overnight Financing Rate ("SOFR") plus the Applicable Margin, at Hamilton Group's discretion. In the event of default, an additional 2% interest in excess of (a) or (b) will be levied, not to exceed the highest rate permissible under applicable law, and certain types of loans may not be available for borrowing by Hamilton Group under the Facility. The Facility matures on June 23, 2025, unless accelerated pursuant to the terms of the Facility, and it contains usual and customary representations, warranties, conditions and covenants for bank loan facilities of this type. The Facility also contains certain financial covenants which cap the ratio of consolidated debt to capital and require that Hamilton Group maintain a certain minimum consolidated net worth. The net worth requirement is recalculated effective as of the end of each fiscal quarter. As at June 30, 2024, the Company was in compliance with all covenants.

The following table presents the gross outstanding loan balance, loan fair value and unamortized loan issuance costs at June 30, 2024 and December 31, 2023:

($ in thousands)	2024		2023
Outstanding loan balance	$	150,000	$	150,000
Loan fair value	150,600		151,000
Unamortized loan issuance costs	$	113	$	170

Debt issuance costs are amortized over the period during which the Facility is outstanding, as an offset to net investment income (loss). The Company amortized debt issuance costs of less than $0.1 million in each of the three and six months ended June 30, 2024 and 2023. The Company’s debt is classified as Level 3 within the fair value hierarchy because it is valued using an income approach, which utilizes a discounted cash flow technique that considers the credit profile of the Company.

Credit Facilities

The Company has several available letter of credit facilities and a revolving loan facility provided by commercial banks. The letter of credit facilities are utilized to provide collateral to reinsureds of Hamilton Re and its affiliates to the extent required under insurance and reinsurance agreements and to support capital requirements at Lloyd’s.

On December 5, 2018 and December 27, 2018, Hamilton Re entered into a Master Agreement for Issuance of Payment Instruments and a Facility Letter for Issuance of Payment Instruments respectively, with CitiBank Europe Plc ("CitiBank Europe"), under which CitiBank Europe agreed to provide an uncommitted secured letter of credit facility for the issuance of standby letters of credit or similar instruments in multiple currencies. On August 8, 2023, letter of credit capacity under this facility was increased to $200 million. At all times during which it is a party to the facility, Hamilton Re is obligated to pledge to CitiBank Europe cash and/or securities with a value that equals or exceeds the aggregate face amount of its then-outstanding letters of credit. The Master Agreement contains events of default customary for facilities of this type. In the facility letter, Hamilton Re makes representations and warranties that are customary for facilities of this type and agrees that it will comply with certain informational and other undertakings.

On June 23, 2022, Hamilton Group and Hamilton Re amended and restated their unsecured credit agreement with a syndication of lenders (the "Unsecured Facility"). Under the Unsecured Facility, the lenders have agreed to provide up to an aggregate of $415 million of letter of credit capacity for Hamilton Re, up to $150 million of which may be utilized for revolving loans to be issued to Hamilton Group. At June 30, 2024, there were no loan amounts outstanding under this facility. Margin rates reflect contractually agreed rates, which are based on Hamilton Re’s current Financial Strength Rating as assigned by A.M. Best. As of April 30, 2024, letters of credit issued under the facility bear interest at a rate of 137.5 basis points (previously 150 basis points), while revolving loans if issued are subject to a fee of SOFR plus a margin of 162.5 basis points (previously 185 basis points). To the extent such loans are issued, the available letter of credit capacity shall decrease proportionally, such that the aggregate credit exposure for the lenders under the credit agreement is $415 million. Amounts unutilized under the facility are subject to a fee of 17.5 basis points (previously 22.5 basis points). Capacity is provided by Wells Fargo, National Association, Truist Bank, BMO Harris Bank N.A., Commerzbank AG, New York Branch, HSBC Bank USA, N.A., and Barclays Bank PLC. Unless renewed or otherwise terminated in accordance with its terms, the Unsecured Facility is scheduled to terminate on June 23, 2025.

On August 11, 2023, Hamilton Re and HIDAC amended their committed letter of credit facility agreement with Bank of Montreal ("BMO"), with Hamilton Group as guarantor, under which BMO agreed to make available a secured letter of credit facility of $50 million for a term that will expire on August 13, 2024. The facility bears a fee of 40 basis points for letters of credit issued and 15 basis points on any unutilized portion of the facility.

On October 26, 2023, Hamilton Re amended its letter of credit facility agreement with UBS AG ("UBS") under which UBS and certain of its affiliates agreed to make available to Hamilton Re a secured letter of credit facility of $100 million for a term that will expire on October 26, 2024. The facility bears a fee of 140 basis points on the total available capacity.

In addition, on October 27, 2023, Hamilton Re amended the unsecured letter of credit facility agreement that it utilizes to provide Funds at Lloyd's ("FAL") ("FAL LOC Facility") to support the FAL requirements of Syndicate 4000. Capacity is provided by Barclays Bank PLC, ING Bank N.V., London Branch, and Bank of Montreal, London Branch. The FAL LOC Facility was increased to $230 million for an additional one year term that expires on October 27, 2024. The facility bears a fee of 162.5 basis points on the borrowed amount.

The Company’s obligations under its credit facilities require Hamilton Group, Hamilton Re and the other parties thereto to comply with various financial and reporting covenants. All applicable entities were in compliance with all such covenants at June 30, 2024.

Certain of the Company's credit facilities are secured by pledged interests in the TS Hamilton Fund, the Company's fixed income security portfolio, or cash. The Company’s credit facilities at June 30, 2024, and associated securities pledged, were as follows:

($ in thousands)	2024
Available letter of credit and revolving loan facilities - commitments	$	995,000
Available letter of credit and revolving loan facilities - in use	731,472
Security pledged under letter of credit and revolving loan facilities:
Pledged interests in TS Hamilton Fund	$	233,014
Pledged interests in fixed income portfolio	252,056
Cash	4,017

The Company has recognized interest expense related to the above debt and credit facilities of $6.0 million and $5.2 million for the three months ended June 30, 2024 and 2023, respectively, and $11.7 million and $10.7 million for the six months ended June 30, 2024 and 2023, respectively.

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Share Capital

6 Months Ended

Jun. 30, 2024

Equity [Abstract]

Share Capital

Share Capital

Authorized and Issued

Hamilton Group’s share capital at June 30, 2024 and December 31, 2023, is comprised as follows:

($ in thousands, except share information)
Authorized:
Common shares of $0.01 par value each (2024 and 2023: 150,000,000)
Issued, outstanding and fully paid:	2024		2023
Class A common shares (2024: 19,520,078 and 2023: 28,644,807)	$	195	$	286
Class B common shares (2024: 57,358,464 and 2023: 56,036,067)	574		560
Class C common shares (2024: 25,044,229 and 2023: 25,544,229)	250		255
Total	$	1,019	$	1,101

The following is a summary of the activity related to common shares authorized for the three months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Unclassified	Total
Balance - March 31, 2024	28,644,807	72,337,352	25,544,229	23,473,612	150,000,000
Share class conversions	—	500,000	(500,000)	—	—
Balance - June 30, 2024	28,644,807	72,837,352	25,044,229	23,473,612	150,000,000

	Class A	Class B	Class C	Unclassified	Total
Balance - March 31, 2023	53,993,690	50,480,684	30,525,626	—	135,000,000
Balance - June 30, 2023	53,993,690	50,480,684	30,525,626	—	135,000,000

The following is a summary of the activity related to common shares authorized for the six months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Unclassified	Total
Balance - December 31, 2023	28,644,807	72,337,352	25,544,229	23,473,612	150,000,000
Share class conversions	—	500,000	(500,000)	—	—
Balance - June 30, 2024	28,644,807	72,837,352	25,044,229	23,473,612	150,000,000

	Class A	Class B	Class C	Unclassified	Total
Balance - December 31, 2022	53,993,690	50,480,684	30,525,626	—	135,000,000
Balance - June 30, 2023	53,993,690	50,480,684	30,525,626	—	135,000,000

The following is a summary of the activity related to common shares issued and outstanding for the three months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Total
Balance - March 31, 2024	28,644,807	56,813,977	25,544,229	111,003,013
Share class conversions	—	500,000	(500,000)	—
Exercise of warrants	—	44,487	—	44,487
Share repurchases	(9,124,729)	—	—	(9,124,729)
Balance - June 30, 2024	19,520,078	57,358,464	25,044,229	101,922,771

	Class A	Class B	Class C	Total
Balance - March 31, 2023	30,520,078	42,684,738	30,525,626	103,730,442
Share repurchases	—	(46,548)	—	(46,548)
Balance - June 30, 2023	30,520,078	42,638,190	30,525,626	103,683,894

The following is a summary of the activity related to common shares issued and outstanding for the six months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Total
Balance - December 31, 2023	28,644,807	56,036,067	25,544,229	110,225,103
Share class conversions	—	500,000	(500,000)	—
Vesting of awards	—	761,261	—	761,261
Exercise of warrants	—	245,779	—	245,779
Director share awards granted	—	20,383	—	20,383
Share repurchases	(9,124,729)	(205,026)	—	(9,329,755)
Balance - June 30, 2024	19,520,078	57,358,464	25,044,229	101,922,771

	Class A	Class B	Class C	Total
Balance - December 31, 2022	30,520,078	42,042,155	30,525,626	103,087,859
Vesting of awards	—	735,013	—	735,013
Director share awards granted	—	24,780	—	24,780
Share repurchases	—	(163,758)	—	(163,758)
Balance - June 30, 2023	30,520,078	42,638,190	30,525,626	103,683,894

On May 8, 2024, the Company entered into an agreement to repurchase 9,124,729 Class A common shares at $12.00 per share (the "Share Repurchase"). The total purchase price was $109.5 million. The common shares purchased by the Company were cancelled following the repurchase transaction.

In general, holders of Class A common shares and Class B common shares have one vote for each common share held while the Class C common shares have no voting rights, except as required by law. However, each holder of Class A common shares and Class B common shares is limited to voting (directly, indirectly or constructively, as determined for U.S. federal income tax purposes) that number of common shares equal to 9.5% of the total combined voting power of all classes of shares of the Company (or, in the case of a class vote by the holders of our Class B common shares, such as in respect of the election or removal of directors other than for directors who are appointed by certain shareholders pursuant to the Shareholders Agreement and our Bye-laws, a maximum of 14.92% of the total combined voting power). In addition, the Board of Directors may limit a shareholder’s voting rights when it deems it appropriate to do so to avoid certain material adverse tax, legal or regulatory consequences to the Company or any direct or indirect shareholder or its affiliates.

The Company Bye-laws provide for the automatic redesignation of shares upon any transfer, whether or not for value, from (i) Class A common shares to Class B common shares and from (ii) Class C common shares to Class B common shares. Upon notice from a Class A Member to the Company that certain Class B common shares are held by a Class A Member or a Permitted Transferee thereof, if so requested by the Class A Member and upon approval by a Simple Majority of the Board, such Class B common shares shall convert automatically into the same number of Class A common shares. The number of authorized and issued Class B common shares shall be reduced by the aggregate number of such issued Class B common shares so converted and the number of authorized and issued Class A common shares shall be correspondingly increased by the same amount. Upon notice from a Class A Member and/or Class B Member to the Company and upon approval by a Simple Majority of the Board, such consent not to be unreasonably withheld or unduly delayed, such Class A common shares and/or Class B common shares shall be redesignated as Class C common shares. In such instance, the authorized and issued number of Class A common shares and/or Class B common shares shall be reduced by the aggregate number of such shares so converted and the number of Class C common shares shall be correspondingly increased by the same amount. Upon notice from a Class C Member to the Company and upon approval of a Simple Majority of the Board, such consent not to be unreasonably withheld or unduly delayed, such Class C common shares shall be redesignated Class B common shares. In such instance, the authorized and issued number of Class C common shares shall be reduced by the aggregate number of such Class C common shares so converted and the number of authorized and issued Class B common shares shall be correspondingly increased by the same amount.

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Earnings Per Share

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

The following table sets forth the computation of basic and diluted income (loss) per common share for the three and six months ended June 30, 2024 and 2023, respectively:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands, except per share information)	2024		2023		2024		2023
Numerator:
Net income (loss) attributable to common shareholders	$	131,085	$	36,787	$	288,259	$	88,279
Denominator:
Weighted average common shares outstanding - basic	105,909		103,732		108,416		103,714
Effect of dilutive securities	3,694		1,163		3,656		1,027
Weighted average common shares outstanding - diluted	109,603		104,895		112,072		104,741
Basic income (loss) per share attributable to common shareholders	$	1.24	$	0.35	$	2.66	$	0.85
Diluted income (loss) per share attributable to common shareholders	$	1.20	$	0.35	$	2.57	$	0.84

For the three and six months ended June 30, 2024, there were 0.3 million and 0.2 million common shares, respectively, available for issuance under share-based compensation plans that were excluded from the calculation of diluted income (loss) per share because the assumed exercise or issuance of such shares would be anti-dilutive.

For each of the three and six months ended June 30, 2023, there were no common shares available for issuance under share-based compensation plans that were excluded from the calculation of diluted income (loss) per share because the assumed exercise or issuance of such shares would be anti-dilutive.

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Subsequent Events	6 Months Ended
	Jun. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On August 7, 2024, the Board of Directors authorized the repurchase of the Company's common shares in the aggregate amount of $150 million (“Authorization”). The Company may repurchase shares through open market repurchases and/or privately negotiated transactions. The Authorization will expire when the Company has repurchased the full value of shares authorized, unless terminated earlier by the Board of Directors.

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2024

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation These unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") and Article 10 of Regulation S-X, for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In addition, the year-end balance sheet data was derived from audited financial statements but does not include all disclosures required by GAAP. In the opinion of management, these unaudited condensed consolidated financial statements reflect all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the Company's financial position and results of operations as at the end of, and for, the periods presented.

Basis of Presentation

These financial statements include the accounts of Hamilton Group, Hamilton Re, Hamilton U.K. Holdings Limited, Hamilton Select, HMGA Americas, ACML, and TS Hamilton Fund (collectively the "Company"). All significant intercompany transactions and balances have been eliminated on consolidation. Certain comparative information has been reclassified to conform to the current year presentation.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The major estimates recorded in the Company’s financial statements include, but are not limited to, premiums written, provisions for estimated future credit losses, the reserve for losses and loss adjustment expenses and the fair value of investments.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Recently Issued Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07 Segment Reporting, which enhances the qualitative and quantitative disclosures related to reportable segments. The guidance is effective for annual periods beginning after December 15, 2023 and interim periods beginning after December 15, 2024. Early adoption is permitted. This guidance will not have a material impact on the Company's results of operations, financial position, or cash flows.

In December 2023, the FASB issued ASU 2023-09 Income Taxes, which enhances the quantitative annual disclosures related to tax rate reconciliations and income taxes paid and requires additional qualitative discussion of applicable tax jurisdictions and the nature of certain reconciling items. The guidance is effective for annual periods beginning after December 15, 2024. Early adoption is permitted. This guidance will not have a material impact on the Company's results of operations, financial position, or cash flows.

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Investments (Tables)

6 Months Ended

Jun. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Schedule of Fixed Maturity and Short-Term Investments

The Company’s fixed maturity and short-term investments at June 30, 2024 and December 31, 2023 are as follows:

	2024
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Fixed maturities:
U.S. government treasuries	$	702,657	$	966	$	(15,523)	$	688,100
U.S. states, territories and municipalities	4,477		—		(235)		4,242
Non-U.S. sovereign governments and supranationals	74,597		615		(1,508)		73,704
Corporate	1,023,626		3,243		(20,357)		1,006,512
Residential mortgage-backed securities - Agency	236,874		93		(16,231)		220,736
Residential mortgage-backed securities - Non-agency	5,961		9		(674)		5,296
Commercial mortgage-backed securities - Non-agency	33,355		4		(1,033)		32,326
Other asset-backed securities	38,192		52		(230)		38,014
Total fixed maturities	2,119,739		4,982		(55,791)		2,068,930
Short-term investments	461,525		2,017		—		463,542
Total	$	2,581,264	$	6,999	$	(55,791)	$	2,532,472

	2023
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Fixed maturities:
U.S. government treasuries	$	717,134	$	5,137	$	(14,021)	$	708,250
U.S. states, territories and municipalities	4,656		—		(286)		4,370
Non-U.S. sovereign governments and supranationals	55,662		2,175		(1,591)		56,246
Corporate	877,493		8,443		(22,060)		863,876
Residential mortgage-backed securities - Agency	180,661		435		(12,583)		168,513
Residential mortgage-backed securities - Non-agency	5,639		16		(671)		4,984
Commercial mortgage-backed securities - Non-agency	11,473		—		(1,050)		10,423
Other asset-backed securities	14,781		20		(195)		14,606
Total fixed maturities	1,867,499		16,226		(52,457)		1,831,268
Short-term investments	427,437		1,441		—		428,878
Total	$	2,294,936	$	17,667	$	(52,457)	$	2,260,146

Schedule of Contractual Maturities of Fixed Maturity Securities

The following table presents contractual maturities of fixed maturity securities at June 30, 2024. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	2024
($ in thousands)	Amortized Cost		Fair Value
Due less than one year	$	134,327	$	131,817
Due after one through five years	1,405,050		1,377,669
Due after five through ten years	262,173		259,858
Due after ten years	3,807		3,214
Mortgage-backed	276,190		258,358
Asset-backed	38,192		38,014
Total	$	2,119,739	$	2,068,930

Schedule of Investments in Two Sigma Funds

The Company’s investments in Two Sigma Funds at June 30, 2024 and December 31, 2023 are as follows:

	2024						2023
($ in thousands)	Cost		Net Unrealized Gains (Losses)		Fair Value		Cost		Net Unrealized Gains (Losses)		Fair Value
Two Sigma Futures Portfolio, LLC (FTV)	$	319,216	$	52,179	$	371,395	$	433,911	$	(38,105)	$	395,806
Two Sigma Spectrum Portfolio, LLC (STV)	231,538		115,187		346,725		193,299		88,228		281,527
Two Sigma Equity Spectrum Portfolio, LLC    (ESTV)	160,482		45,080		205,562		142,981		31,156		174,137
Total	$	711,236	$	212,446	$	923,682	$	770,191	$	81,279	$	851,470

Schedule of Certain Investments of FTV, STV and ESTV

The following table summarizes certain investments of FTV, STV and ESTV where TS Hamilton Fund’s proportionate share of the fair value of the investment represents more than 5% of TS Hamilton Fund’s members’ equity at June 30, 2024:

	2024
($ in thousands)	Principal / Shares (1)	Fair Value (1)		% of Members' Equity
State Street Treasury Obligations Money Market Fund	183,197	$	183,197	9.6	%
U.S. Treasury Securities, 0.0000%- 4.6250%, due 7/2/2024 - 5/15/2054	2,026,171	$	2,024,274	106.1	%
U.S. Treasury Securities, 4.2500%- 4.6250%, due 6/30/2026 - 5/15/2054	(338,908)	$	(338,626)	(17.8)	%

(1) Values represent TS Hamilton Fund’s proportionate share of the aggregate of FTV, STV and ESTV total holdings.

Schedule of Realized and Unrealized Gains (Losses) on Investments and Net Investment Income (Loss)

The components of total net realized and unrealized gains (losses) on investments and net investment income (loss) for the three and six months ended June 30, 2024 and 2023 are as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Net realized and unrealized gains (losses) on investments:
Net realized gains (losses) on investments	$	139,489	$	27,612	$	288,934	$	(10,040)
Change in net unrealized gains (losses) on investments	11,762		(8,206)		117,688		64,579
Net realized and unrealized gains (losses) on investments	151,251		19,406		406,622		54,539
Net investment income (loss):
Fixed maturities	19,009		10,815		35,960		18,970
Short-term investments	41		98		40		249
TS Hamilton Fund	2,917		6,025		5,932		9,912
Cash and cash equivalents	4,095		2,412		8,210		4,725
Other	415		697		1,167		1,120
Interest and other	26,477		20,047		51,309		34,976
Management fees	(12,482)		(12,515)		(24,433)		(24,849)
Other expenses	(275)		(241)		(538)		(477)
Net investment income (loss)	13,720		7,291		26,338		9,650
Total net realized and unrealized gains (losses) on investments and net investment income (loss)	$	164,971	$	26,697	$	432,960	$	64,189

Schedule of Realized Gain (Loss) on Investments

The components of net realized gains (losses) on investments for the three and six months ended June 30, 2024 and 2023 are as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Fixed maturities and short-term investments	$	(1,695)	$	2,574	$	(4,636)	$	(3,108)
TS Hamilton Fund	140,900		24,827		293,286		(7,143)
Other	284		211		284		211
Net realized gains (losses) on investments	$	139,489	$	27,612	$	288,934	$	(10,040)

Schedule of Unrealized Gain (Loss) on Investments

The components of net unrealized gains (losses) on investments for the three and six months ended June 30, 2024 and 2023 are as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Fixed maturities and short-term investments	$	(1,608)	$	(19,539)	$	(14,599)	$	3,019
TS Hamilton Fund	13,370		11,333		132,287		61,560
Net unrealized gains (losses) on investments	$	11,762	$	(8,206)	$	117,688	$	64,579

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Fair Value (Tables)

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Measured at Fair Value on a Recurring Basis

The following table presents the financial instruments measured at fair value on a recurring basis at June 30, 2024 and December 31, 2023:

	2024
($ in thousands)	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. government treasuries	$	—	$	688,100	$	—	$	688,100
U.S. states, territories and municipalities	—		4,242		—		4,242
Non-U.S. sovereign governments and supranationals	—		73,704		—		73,704
Corporate	—		1,006,512		—		1,006,512
Residential mortgage-backed securities - Agency	—		220,736		—		220,736
Residential mortgage-backed securities - Non-agency	—		5,296		—		5,296
Commercial mortgage-backed securities - Non-agency	—		32,326		—		32,326
Other asset-backed securities	—		38,014		—		38,014
Total fixed maturities	—		2,068,930		—		2,068,930
Short-term investments	—		463,542		—		463,542
Total	$	—	$	2,532,472	$	—	$	2,532,472

	2023
($ in thousands)	Level 1		Level 2		Level 3		Total
Fixed maturities:
U.S. government treasuries	$	—	$	708,250	$	—	$	708,250
U.S. states, territories and municipalities	—		4,370		—		4,370
Non-U.S. sovereign governments and supranationals	—		56,246		—		56,246
Corporate	—		863,876		—		863,876
Residential mortgage-backed securities - Agency	—		168,513		—		168,513
Residential mortgage-backed securities - Non-agency	—		4,984		—		4,984
Commercial mortgage-backed securities - Non-agency	—		10,423		—		10,423
Other asset-backed securities	—		14,606		—		14,606
Total fixed maturities	—		1,831,268		—		1,831,268
Short-term investments	—		428,878		—		428,878
Total	$	—	$	2,260,146	$	—	$	2,260,146

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Variable Interest Entities (Tables)

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Activity In and Total Assets and Total Liabilities of TS Hamilton Fund

Activity in the non-controlling interest of TS Hamilton Fund for the three and six months ended June 30, 2024 and 2023 was as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Balance - beginning of period	$	54,727	$	120	$	133	$	119
Withdrawals	(46,749)		(4,497)		(112,313)		(6,006)
Equity in earnings	13		4		34		5
Incentive allocation	69,284		4,497		189,421		6,006
Balance - end of period	$	77,275	$	124	$	77,275	$	124

The following table presents the total assets and total liabilities of TS Hamilton Fund at June 30, 2024 and December 31, 2023. Creditors or beneficial interest holders of TS Hamilton Fund have no recourse to the general credit of the Company as the Company’s obligation is limited to the amount of its committed investment.

($ in thousands)	2024		2023
Assets
Cash and cash equivalents	$	650,671	$	479,255
Short-term investments	463,542		428,878
Investments in Two Sigma Funds, at fair value	923,682		851,470
Receivables for investments sold	—		41,087
Interest and dividends receivable	1,029		966
Total assets	2,038,924		1,801,656
Liabilities
Accounts payable and accrued expenses	177		191
Withdrawal payable	43,030		6,480
Payable for investments purchased	87,716		62,440
Total liabilities	130,923		69,111
Total net assets managed by TS Hamilton Fund	$	1,908,001	$	1,732,545

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Reinsurance (Tables)

6 Months Ended

Jun. 30, 2024

Insurance [Abstract]

Rollforward of Provision for Current Expected Credit Losses of Premiums Receivable

The following table provides a roll forward of the provision for current expected credit losses of the Company's premiums receivable for the three and six months ended June 30, 2024 and 2023:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Beginning balance	$	2,153	$	3,136	$	3,000	$	2,856
Increase (decrease) in allowance	(191)		(38)		(1,038)		242
Ending balance	$	1,962	$	3,098	$	1,962	$	3,098

Rollforward of Provision for Current Expected Credit Losses of Reinsurance Recoverable

The following table provides a roll forward of the provision for current expected credit losses of the Company's reinsurance recoverable for the three and six months ended June 30, 2024 and 2023:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
Beginning balance	$	709	$	792	$	687	$	777
Increase (decrease) in allowance	46		28		68		43
Ending balance	$	755	$	820	$	755	$	820

Schedule of Paid and Unpaid Losses and Loss Adjustment Expenses Recoverable

At June 30, 2024 and December 31, 2023, the distribution of the Company’s paid losses recoverable and unpaid losses and loss adjustment expenses recoverable as categorized by major rating agencies were as follows:

Classification	2024		2023
Collateralized	25.7	%	28.5	%
A- or better	74.0	%	71.0	%
Below A-	0.3	%	0.5	%
Total	100.0	%	100.0	%

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Reserve for Losses and Loss Adjustment Expenses (Tables)

6 Months Ended

Jun. 30, 2024

Insurance [Abstract]

Schedule of Reconciliation of Unpaid Losses and Loss Adjustment Expenses

The following table presents a reconciliation of unpaid losses and loss adjustment expenses ("LAE") for the six months ended June 30, 2024 and 2023:

($ in thousands)	2024		2023
Gross unpaid losses and loss adjustment expenses, beginning of period	$	3,030,037	$	2,856,275
Reinsurance recoverable on unpaid losses	1,161,077		1,177,863
Net unpaid losses and loss adjustment expenses, beginning of period	1,868,960		1,678,412
Net losses and loss adjustment expenses incurred in respect of losses occurring in:
Current year	436,348		330,458
Prior years	10,498		(2,481)
Total incurred	446,846		327,977
Net losses and loss adjustment expenses paid in respect of losses occurring in:
Current year	6,787		10,431
Prior years	224,576		282,252
Total paid	231,363		292,683
Foreign currency revaluation and other	(1,859)		22,454
Net unpaid losses and loss adjustment expenses, end of period	2,082,584		1,736,160
Reinsurance recoverable on unpaid losses	1,160,309		1,162,940
Gross unpaid losses and loss adjustment expenses, end of period	$	3,242,893	$	2,899,100

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Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information

($ in thousands)
Three Months Ended June 30, 2024	International			Bermuda			Corporate		Total
Gross premiums written	$	311,616		$	291,688		$	—	$	603,304
Net premiums written	$	234,305		$	240,763		$	—	$	475,068
Net premiums earned	$	215,643		$	203,121		$	—	$	418,764
Third party fee income	3,798			2,191			—		5,989
Losses and loss adjustment expenses	112,884			101,610			—		214,494
Acquisition costs	53,157			43,148			—		96,305
Other underwriting expenses	33,972			14,683			—		48,655
Underwriting income (loss)	$	19,428		$	45,871		$	—	$	65,299
Net realized and unrealized gains (losses) on investments							151,251		151,251
Net investment income (loss)							13,720		13,720
Net foreign exchange gains (losses)							(1,782)		(1,782)
Corporate expenses							(16,262)		(16,262)
Amortization of intangible assets							(3,317)		(3,317)
Interest expense							(6,031)		(6,031)
Income (loss) before income tax									202,878
Income tax (expense) benefit							(2,496)		(2,496)
Net income (loss)									200,382
Net income (loss) attributable to non-controlling interest							69,297		69,297
Net income (loss) attributable to common shareholders									$	131,085
Key Ratios
Attritional loss ratio - current year	52.5		%	50.5		%			51.6		%
Attritional loss ratio - prior year development	(0.2)		%	(0.5)		%			(0.4)		%
Catastrophe loss ratio - current year	0.0		%	0.0		%			0.0		%
Catastrophe loss ratio - prior year development	0.0		%	0.0		%			0.0		%
Loss and loss adjustment expense ratio	52.3		%	50.0		%			51.2		%
Acquisition cost ratio	24.7		%	21.2		%			23.0		%
Other underwriting expense ratio	14.0		%	6.2		%			10.2		%
Combined ratio	91.0		%	77.4		%			84.4		%

($ in thousands)
Three Months Ended June 30, 2023	International			Bermuda			Corporate		Total
Gross premiums written	$	277,796		$	227,164		$	—	$	504,960
Net premiums written	$	197,047		$	187,661		$	—	$	384,708
Net premiums earned	$	176,636		$	154,824		$	—	$	331,460
Third party fee income	2,401			48			—		2,449
Losses and loss adjustment expenses	87,575			91,841			—		179,416
Acquisition costs	47,260			29,596			—		76,856
Other underwriting expenses	29,540			13,203			—		42,743
Underwriting income (loss)	$	14,662		$	20,232		$	—	$	34,894
Net realized and unrealized gains (losses) on investments							19,406		19,406
Net investment income (loss)							7,291		7,291
Other income (loss), excluding third party fee income							(29)		(29)
Net foreign exchange gains (losses)							(3,341)		(3,341)
Corporate expenses							(6,491)		(6,491)
Amortization of intangible assets							(2,305)		(2,305)
Interest expense							(5,189)		(5,189)
Income (loss) before income tax									44,236
Income tax (expense) benefit							(2,948)		(2,948)
Net income (loss)									41,288
Net income (loss) attributable to non-controlling interest							4,501		4,501
Net income (loss) attributable to common shareholders									$	36,787
Key Ratios
Attritional loss ratio - current year	52.9		%	48.9		%			51.0		%
Attritional loss ratio - prior year development	(3.3)		%	0.3		%			(1.6)		%
Catastrophe loss ratio - current year	0.9		%	9.8		%			5.0		%
Catastrophe loss ratio - prior year development	(0.9)		%	0.3		%			(0.3)		%
Loss and loss adjustment expense ratio	49.6		%	59.3		%			54.1		%
Acquisition cost ratio	26.8		%	19.1		%			23.2		%
Other underwriting expense ratio	15.4		%	8.5		%			12.2		%
Combined ratio	91.8		%	86.9		%			89.5		%

($ in thousands)
Six Months Ended June 30, 2024	International			Bermuda			Corporate		Total
Gross premiums written	$	632,457		$	692,788		$	—	$	1,325,245
Net premiums written	$	419,338		$	570,610		$	—	$	989,948
Net premiums earned	$	412,456		$	391,611		$	—	$	804,067
Third party fee income	7,387			6,083			—		13,470
Losses and loss adjustment expenses	229,046			217,800			—		446,846
Acquisition costs	100,876			79,982			—		180,858
Other underwriting expenses	65,174			26,834			—		92,008
Underwriting income (loss)	$	24,747		$	73,078		$	—	$	97,825
Net realized and unrealized gains (losses) on investments							406,622		406,622
Net investment income (loss)							26,338		26,338
Net foreign exchange gains (losses)							(3,911)		(3,911)
Corporate expenses							(27,764)		(27,764)
Amortization of intangible assets							(6,569)		(6,569)
Interest expense							(11,738)		(11,738)
Income (loss) before income tax									480,803
Income tax (expense) benefit							(3,089)		(3,089)
Net income (loss)									477,714
Net income (loss) attributable to non-controlling interest							189,455		189,455
Net income (loss) attributable to common shareholders									$	288,259
Key Ratios
Attritional loss ratio - current year	54.2		%	54.3		%			54.3		%
Attritional loss ratio - prior year development	1.3		%	1.3		%			1.3		%
Catastrophe loss ratio - current year	0.0		%	0.0		%			0.0		%
Catastrophe loss ratio - prior year development	0.0		%	0.0		%			0.0		%
Loss and loss adjustment expense ratio	55.5		%	55.6		%			55.6		%
Acquisition cost ratio	24.5		%	20.4		%			22.5		%
Other underwriting expense ratio	14.0		%	5.3		%			9.8		%
Combined ratio	94.0		%	81.3		%			87.9		%

($ in thousands)
Six Months Ended June 30, 2023	International			Bermuda			Corporate		Total
Gross premiums written	$	524,909		$	518,215		$	—	$	1,043,124
Net premiums written	$	319,067		$	414,139		$	—	$	733,206
Net premiums earned	$	326,151		$	289,211		$	—	$	615,362
Third party fee income	5,302			150			—		5,452
Losses and loss adjustment expenses	157,967			170,010			—		327,977
Acquisition costs	84,452			57,543			—		141,995
Other underwriting expenses	58,002			23,884			—		81,886
Underwriting income (loss)	$	31,032		$	37,924		$	—	$	68,956
Net realized and unrealized gains (losses) on investments							54,539		54,539
Net investment income (loss)							9,650		9,650
Net foreign exchange gains (losses)							(5,387)		(5,387)
Corporate expenses							(13,154)		(13,154)
Amortization of intangible assets							(5,075)		(5,075)
Interest expense							(10,718)		(10,718)
Income (loss) before income tax									98,811
Income tax (expense) benefit							(4,521)		(4,521)
Net income (loss)									94,290
Net income (loss) attributable to non-controlling interest							6,011		6,011
Net income (loss) attributable to common shareholders									$	88,279
Key Ratios
Attritional loss ratio - current year	51.6		%	48.5		%			50.1		%
Attritional loss ratio - prior year development	(3.8)		%	3.0		%			(0.6)		%
Catastrophe loss ratio - current year	0.4		%	7.1		%			3.6		%
Catastrophe loss ratio - prior year development	0.2		%	0.2		%			0.2		%
Loss and loss adjustment expense ratio	48.4		%	58.8		%			53.3		%
Acquisition cost ratio	25.9		%	19.9		%			23.1		%
Other underwriting expense ratio	16.2		%	8.2		%			12.4		%
Combined ratio	90.5		%	86.9		%			88.8		%

Schedule of Revenue from External Customers by Geographic Areas

The following table presents gross premiums written by the geographical location of the Company's subsidiaries for the three and six months ended June 30, 2024 and 2023:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands)	2024		2023		2024		2023
International
Lloyd's of London	$	199,378	$	169,463	$	397,959	$	318,171
Ireland	85,053		90,968		184,126		174,731
U.S.	27,185		17,365		50,372		32,007
Total International	311,616		277,796		632,457		524,909
Bermuda	291,688		227,164		692,788		518,215
Total	$	603,304	$	504,960	$	1,325,245	$	1,043,124

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Debt and Credit Facilities (Tables)

6 Months Ended

Jun. 30, 2024

Debt Disclosure [Abstract]

Schedule of Long-Term Debt Instruments

The following table presents the gross outstanding loan balance, loan fair value and unamortized loan issuance costs at June 30, 2024 and December 31, 2023:

($ in thousands)	2024		2023
Outstanding loan balance	$	150,000	$	150,000
Loan fair value	150,600		151,000
Unamortized loan issuance costs	$	113	$	170

Schedule of Credit Facilities

The Company’s credit facilities at June 30, 2024, and associated securities pledged, were as follows:

($ in thousands)	2024
Available letter of credit and revolving loan facilities - commitments	$	995,000
Available letter of credit and revolving loan facilities - in use	731,472
Security pledged under letter of credit and revolving loan facilities:
Pledged interests in TS Hamilton Fund	$	233,014
Pledged interests in fixed income portfolio	252,056
Cash	4,017

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Share Capital (Tables)

6 Months Ended

Jun. 30, 2024

Equity [Abstract]

Schedule of Share Capital

Hamilton Group’s share capital at June 30, 2024 and December 31, 2023, is comprised as follows:

($ in thousands, except share information)
Authorized:
Common shares of $0.01 par value each (2024 and 2023: 150,000,000)
Issued, outstanding and fully paid:	2024		2023
Class A common shares (2024: 19,520,078 and 2023: 28,644,807)	$	195	$	286
Class B common shares (2024: 57,358,464 and 2023: 56,036,067)	574		560
Class C common shares (2024: 25,044,229 and 2023: 25,544,229)	250		255
Total	$	1,019	$	1,101

Schedule of Activity Related to Common Shares

The following is a summary of the activity related to common shares authorized for the three months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Unclassified	Total
Balance - March 31, 2024	28,644,807	72,337,352	25,544,229	23,473,612	150,000,000
Share class conversions	—	500,000	(500,000)	—	—
Balance - June 30, 2024	28,644,807	72,837,352	25,044,229	23,473,612	150,000,000

	Class A	Class B	Class C	Unclassified	Total
Balance - March 31, 2023	53,993,690	50,480,684	30,525,626	—	135,000,000
Balance - June 30, 2023	53,993,690	50,480,684	30,525,626	—	135,000,000

The following is a summary of the activity related to common shares authorized for the six months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Unclassified	Total
Balance - December 31, 2023	28,644,807	72,337,352	25,544,229	23,473,612	150,000,000
Share class conversions	—	500,000	(500,000)	—	—
Balance - June 30, 2024	28,644,807	72,837,352	25,044,229	23,473,612	150,000,000

	Class A	Class B	Class C	Unclassified	Total
Balance - December 31, 2022	53,993,690	50,480,684	30,525,626	—	135,000,000
Balance - June 30, 2023	53,993,690	50,480,684	30,525,626	—	135,000,000

The following is a summary of the activity related to common shares issued and outstanding for the three months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Total
Balance - March 31, 2024	28,644,807	56,813,977	25,544,229	111,003,013
Share class conversions	—	500,000	(500,000)	—
Exercise of warrants	—	44,487	—	44,487
Share repurchases	(9,124,729)	—	—	(9,124,729)
Balance - June 30, 2024	19,520,078	57,358,464	25,044,229	101,922,771

	Class A	Class B	Class C	Total
Balance - March 31, 2023	30,520,078	42,684,738	30,525,626	103,730,442
Share repurchases	—	(46,548)	—	(46,548)
Balance - June 30, 2023	30,520,078	42,638,190	30,525,626	103,683,894

The following is a summary of the activity related to common shares issued and outstanding for the six months ended June 30, 2024 and 2023:

	Class A	Class B	Class C	Total
Balance - December 31, 2023	28,644,807	56,036,067	25,544,229	110,225,103
Share class conversions	—	500,000	(500,000)	—
Vesting of awards	—	761,261	—	761,261
Exercise of warrants	—	245,779	—	245,779
Director share awards granted	—	20,383	—	20,383
Share repurchases	(9,124,729)	(205,026)	—	(9,329,755)
Balance - June 30, 2024	19,520,078	57,358,464	25,044,229	101,922,771

	Class A	Class B	Class C	Total
Balance - December 31, 2022	30,520,078	42,042,155	30,525,626	103,087,859
Vesting of awards	—	735,013	—	735,013
Director share awards granted	—	24,780	—	24,780
Share repurchases	—	(163,758)	—	(163,758)
Balance - June 30, 2023	30,520,078	42,638,190	30,525,626	103,683,894

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Income (Loss) per Common Share

The following table sets forth the computation of basic and diluted income (loss) per common share for the three and six months ended June 30, 2024 and 2023, respectively:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
($ in thousands, except per share information)	2024		2023		2024		2023
Numerator:
Net income (loss) attributable to common shareholders	$	131,085	$	36,787	$	288,259	$	88,279
Denominator:
Weighted average common shares outstanding - basic	105,909		103,732		108,416		103,714
Effect of dilutive securities	3,694		1,163		3,656		1,027
Weighted average common shares outstanding - diluted	109,603		104,895		112,072		104,741
Basic income (loss) per share attributable to common shareholders	$	1.24	$	0.35	$	2.66	$	0.85
Diluted income (loss) per share attributable to common shareholders	$	1.20	$	0.35	$	2.57	$	0.84

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Organization (Details) - Two Sigma Hamilton Fund, LLC - Hamilton Re - USD ($) $ in Billions	Jul. 01, 2023	Jun. 30, 2023
Schedule of Equity Method Investments [Line Items]
Commitment for investment in Two Sigma Funds	$ 1.8
Investment in Two Sigma Funds, as a percentage of net tangible assets	60.00%	95.00%

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Investments - Schedule of Fixed Maturity and Short-Term Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 2,581,264	$ 2,294,936
Gross Unrealized Gains	6,999	17,667
Gross Unrealized Losses	(55,791)	(52,457)
Investments, at fair value	2,532,472	2,260,146
Total fixed maturities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	2,119,739	1,867,499
Gross Unrealized Gains	4,982	16,226
Gross Unrealized Losses	(55,791)	(52,457)
Investments, at fair value	2,068,930	1,831,268
U.S. government treasuries
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	702,657	717,134
Gross Unrealized Gains	966	5,137
Gross Unrealized Losses	(15,523)	(14,021)
Investments, at fair value	688,100	708,250
U.S. states, territories and municipalities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	4,477	4,656
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(235)	(286)
Investments, at fair value	4,242	4,370
Non-U.S. sovereign governments and supranationals
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	74,597	55,662
Gross Unrealized Gains	615	2,175
Gross Unrealized Losses	(1,508)	(1,591)
Investments, at fair value	73,704	56,246
Corporate
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	1,023,626	877,493
Gross Unrealized Gains	3,243	8,443
Gross Unrealized Losses	(20,357)	(22,060)
Investments, at fair value	1,006,512	863,876
Residential mortgage-backed securities - Agency
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	236,874	180,661
Gross Unrealized Gains	93	435
Gross Unrealized Losses	(16,231)	(12,583)
Investments, at fair value	220,736	168,513
Residential mortgage-backed securities - Non-agency
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	5,961	5,639
Gross Unrealized Gains	9	16
Gross Unrealized Losses	(674)	(671)
Investments, at fair value	5,296	4,984
Commercial mortgage-backed securities - Non-agency
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	33,355	11,473
Gross Unrealized Gains	4	0
Gross Unrealized Losses	(1,033)	(1,050)
Investments, at fair value	32,326	10,423
Other asset-backed securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	38,192	14,781
Gross Unrealized Gains	52	20
Gross Unrealized Losses	(230)	(195)
Investments, at fair value	38,014	14,606
Short-term investments
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	461,525	427,437
Gross Unrealized Gains	2,017	1,441
Gross Unrealized Losses	0	0
Investments, at fair value	$ 463,542	$ 428,878

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Investments - Schedule of Contractual Maturities of Fixed Maturity Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Amortized Cost
Amortized Cost	$ 2,581,264	$ 2,294,936
Fair Value
Fair Value	2,532,472	2,260,146
Total fixed maturities
Amortized Cost
Amortized Cost	2,119,739	1,867,499
Fair Value
Fair Value	2,068,930	$ 1,831,268
Fixed Maturities, Excluding Mortgage-backed and Asset-backed Securities
Amortized Cost
Due less than one year	134,327
Due after one through five years	1,405,050
Due after five through ten years	262,173
Due after ten years	3,807
Fair Value
Due less than one year	131,817
Due after one through five years	1,377,669
Due after five through ten years	259,858
Due after ten years	3,214
Mortgage-backed
Amortized Cost
Mortgage/Asset-backed	276,190
Fair Value
Mortgage/Asset-backed	258,358
Asset-backed
Amortized Cost
Mortgage/Asset-backed	38,192
Fair Value
Mortgage/Asset-backed	$ 38,014

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Investments - Schedule of Investments in Two Sigma Funds (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Cost	$ 711,236	$ 770,191
Investments in Two Sigma Funds, at fair value	923,682	851,470
Two Sigma Funds
Marketable Securities [Line Items]
Net Unrealized Gains (Losses)	212,446	81,279
Investments in Two Sigma Funds, at fair value	923,682	851,470
Two Sigma Futures Portfolio, LLC (FTV)
Marketable Securities [Line Items]
Cost	319,216	433,911
Net Unrealized Gains (Losses)	52,179	(38,105)
Investments in Two Sigma Funds, at fair value	371,395	395,806
Two Sigma Spectrum Portfolio, LLC (STV)
Marketable Securities [Line Items]
Cost	231,538	193,299
Net Unrealized Gains (Losses)	115,187	88,228
Investments in Two Sigma Funds, at fair value	346,725	281,527
Two Sigma Equity Spectrum Portfolio, LLC (ESTV)
Marketable Securities [Line Items]
Cost	160,482	142,981
Net Unrealized Gains (Losses)	45,080	31,156
Investments in Two Sigma Funds, at fair value	$ 205,562	$ 174,137

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Investments - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Net Investment Income [Line Items]
Management fees		$ 12,482	$ 12,515	$ 24,433	$ 24,849
Restricted cash and cash equivalents		98,279		98,279		$ 106,351
Cash, cash equivalents and restricted cash		1,114,852	925,218	1,114,852	$ 925,218	900,860	$ 1,207,203
Cash and cash equivalents		1,016,573		1,016,573		794,509
Capital Requirements | Asset Pledged as Collateral
Net Investment Income [Line Items]
Investments, fair value		237,900		237,900		232,200
Restricted cash and cash equivalents		2,700		2,700		7,200
Trust Accounts | Asset Pledged as Collateral
Net Investment Income [Line Items]
Investments, fair value		88,200		88,200		54,100
Restricted cash and cash equivalents		1,500		1,500		1,500
Underwriting Obligations | Asset Pledged as Collateral
Net Investment Income [Line Items]
Investments, fair value		36,600		36,600		37,200
Restricted cash and cash equivalents		94,100		94,100		97,400
Escrow Funds | Asset Pledged as Collateral
Net Investment Income [Line Items]
Restricted cash and cash equivalents		0		0		300
TS Hamilton Fund
Net Investment Income [Line Items]
Management fee percentage	2.50%				3.00%
Management fees		11,900	12,100	23,200	$ 24,000
Incentive allocation	30.00%
Incentive allocation, reduction (as a percent)	50.00%
Incentive allocation, cumulative net profits (as a percent)	200.00%
Incentive allocation, excess profits (as a percent)	25.00%				20.00%
Incentive allocation, net profits (as a percent)	10.00%				15.00%
Incentive allocation		69,300	$ 4,500	189,400	$ 6,000
Cash and cash equivalents		$ 650,671		$ 650,671		$ 479,255
TS Hamilton Fund | Hamilton Re
Net Investment Income [Line Items]
Initial term		3 years		3 years
Capital account withdrawal, monthly liquidity, number of calendar days prior to month end		15 days		15 days
Capital account withdrawal, daily liquidity, number of business day's written notice		1 day		1 day
Two Sigma Futures Portfolio, LLC (FTV)
Net Investment Income [Line Items]
Percentage of ownership in funds		18.40%		18.40%
Two Sigma Spectrum Portfolio, LLC (STV)
Net Investment Income [Line Items]
Percentage of ownership in funds		18.10%		18.10%
Two Sigma Equity Spectrum Portfolio, LLC (ESTV)
Net Investment Income [Line Items]
Percentage of ownership in funds		10.00%		10.00%
Two Sigma Hamilton Fund, LLC | Hamilton Re
Net Investment Income [Line Items]
Commitment for investment in Two Sigma Funds	$ 1,800,000
Investment in Two Sigma Funds, as a percentage of net tangible assets	60.00%		95.00%		95.00%

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Investments - Schedule of Certain Investments (Details) - USD ($) shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Net Investment Income [Line Items]
Investments in Two Sigma Funds, at fair value	$ 923,682	$ 851,470
TS Hamilton Fund
Net Investment Income [Line Items]
Investments in Two Sigma Funds, at fair value	$ 923,682	$ 851,470
State Street Treasury Obligations Money Market Fund | TS Hamilton Fund | Long
Net Investment Income [Line Items]
Principal / Shares	183,197
Investments in Two Sigma Funds, at fair value	$ 183,197
State Street Treasury Obligations Money Market Fund | Members' Equity | Investment Concentration Risk | TS Hamilton Fund | Long
Net Investment Income [Line Items]
% of Members' Equity	9.60%
U.S. Treasury Securities, 0.0000%- 4.6250%, due 7/2/2024 - 5/15/2054 | TS Hamilton Fund | Long
Net Investment Income [Line Items]
Principal / Shares	2,026,171
Investments in Two Sigma Funds, at fair value	$ 2,024,274
U.S. Treasury Securities, 0.0000%- 4.6250%, due 7/2/2024 - 5/15/2054 | Members' Equity | Investment Concentration Risk | TS Hamilton Fund | Long
Net Investment Income [Line Items]
% of Members' Equity	106.10%
U.S. Treasury Securities, 4.2500%- 4.6250%, due 6/30/2026 - 5/15/2054 | TS Hamilton Fund | Short
Net Investment Income [Line Items]
Principal / Shares	338,908
Investments in Two Sigma Funds, at fair value	$ 338,626
U.S. Treasury Securities, 4.2500%- 4.6250%, due 6/30/2026 - 5/15/2054 | Members' Equity | Investment Concentration Risk | TS Hamilton Fund | Short
Net Investment Income [Line Items]
% of Members' Equity	17.80%

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Investments - Schedule of Realized and Unrealized Gains (Losses) on Investments and Net Investment Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net realized and unrealized gains (losses) on investments:
Net realized gains (losses) on investments	$ 139,489	$ 27,612	$ 288,934	$ (10,040)
Change in net unrealized gains (losses) on investments	11,762	(8,206)	117,688	64,579
Net realized and unrealized gains (losses) on investments	151,251	19,406	406,622	54,539
Net investment income (loss):
Interest and other	26,477	20,047	51,309	34,976
Management fees	(12,482)	(12,515)	(24,433)	(24,849)
Other expenses	(275)	(241)	(538)	(477)
Net investment income (loss)	13,720	7,291	26,338	9,650
Total net realized and unrealized gains (losses) on investments and net investment income (loss)	164,971	26,697	432,960	64,189
Total fixed maturities
Net investment income (loss):
Interest and other	19,009	10,815	35,960	18,970
Short-term investments
Net investment income (loss):
Interest and other	41	98		249
Interest and other			40
TS Hamilton Fund
Net realized and unrealized gains (losses) on investments:
Net realized gains (losses) on investments	140,900	24,827	293,286	(7,143)
Change in net unrealized gains (losses) on investments	13,370	11,333	132,287	61,560
Net investment income (loss):
Interest and other	2,917	6,025	5,932	9,912
Cash and cash equivalents
Net investment income (loss):
Interest and other	4,095	2,412	8,210	4,725
Other
Net investment income (loss):
Interest and other	415	697	1,167	1,120
Fixed maturities and short-term investments
Net realized and unrealized gains (losses) on investments:
Net realized gains (losses) on investments	(1,695)	2,574	(4,636)	(3,108)
Change in net unrealized gains (losses) on investments	(1,608)	(19,539)	(14,599)	3,019
Other
Net realized and unrealized gains (losses) on investments:
Net realized gains (losses) on investments	$ 284	$ 211	$ 284	$ 211

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Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	$ 2,532,472	$ 2,260,146
Total fixed maturities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	2,068,930	1,831,268
U.S. government treasuries
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	688,100	708,250
U.S. states, territories and municipalities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	4,242	4,370
Non-U.S. sovereign governments and supranationals
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	73,704	56,246
Corporate
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	1,006,512	863,876
Residential mortgage-backed securities - Agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	220,736	168,513
Residential mortgage-backed securities - Non-agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	5,296	4,984
Commercial mortgage-backed securities - Non-agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	32,326	10,423
Other asset-backed securities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	38,014	14,606
Short-term investments
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	463,542	428,878
Level 1
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | Total fixed maturities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | U.S. government treasuries
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | U.S. states, territories and municipalities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | Non-U.S. sovereign governments and supranationals
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | Corporate
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | Residential mortgage-backed securities - Agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | Residential mortgage-backed securities - Non-agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | Commercial mortgage-backed securities - Non-agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | Other asset-backed securities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 1 | Short-term investments
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 2
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	2,532,472	2,260,146
Level 2 | Total fixed maturities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	2,068,930	1,831,268
Level 2 | U.S. government treasuries
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	688,100	708,250
Level 2 | U.S. states, territories and municipalities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	4,242	4,370
Level 2 | Non-U.S. sovereign governments and supranationals
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	73,704	56,246
Level 2 | Corporate
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	1,006,512	863,876
Level 2 | Residential mortgage-backed securities - Agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	220,736	168,513
Level 2 | Residential mortgage-backed securities - Non-agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	5,296	4,984
Level 2 | Commercial mortgage-backed securities - Non-agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	32,326	10,423
Level 2 | Other asset-backed securities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	38,014	14,606
Level 2 | Short-term investments
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	463,542	428,878
Level 3
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | Total fixed maturities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | U.S. government treasuries
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | U.S. states, territories and municipalities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | Non-U.S. sovereign governments and supranationals
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | Corporate
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | Residential mortgage-backed securities - Agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | Residential mortgage-backed securities - Non-agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | Commercial mortgage-backed securities - Non-agency
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | Other asset-backed securities
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	0	0
Level 3 | Short-term investments
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]
Investments, at fair value	$ 0	$ 0

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Variable Interest Entities - Schedule of Activity in the Non-Controlling Interest (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance - beginning of period			$ 133
Balance - end of period	$ 77,275		77,275
TS Hamilton Fund
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance - beginning of period	54,727	$ 120	133	$ 119
Withdrawals	(46,749)	(4,497)	(112,313)	(6,006)
Equity in earnings	13	4	34	5
Incentive allocation	69,284	4,497	189,421	6,006
Balance - end of period	$ 77,275	$ 124	$ 77,275	$ 124

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Variable Interest Entities - Schedule of Total Assets and Total Liabilities of TS Hamilton Fund (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 1,016,573	$ 794,509
Short-term investments	2,532,472	2,260,146
Investments in Two Sigma Funds, at fair value	923,682	851,470
Receivables for investments sold	12,307	42,419
Total assets	7,623,103	6,671,355
Liabilities
Accounts payable and accrued expenses	158,187	186,887
Payables for investments purchased	111,280	66,606
Total liabilities	5,307,281	4,623,372
Short-term investments
Assets
Short-term investments	463,542	428,878
TS Hamilton Fund
Assets
Cash and cash equivalents	650,671	479,255
Investments in Two Sigma Funds, at fair value	923,682	851,470
Receivables for investments sold	0	41,087
Interest and dividends receivable	1,029	966
Total assets	2,038,924	1,801,656
Liabilities
Accounts payable and accrued expenses	177	191
Withdrawal payable	43,030	6,480
Payables for investments purchased	87,716	62,440
Total liabilities	130,923	69,111
Total net assets managed by TS Hamilton Fund	1,908,001	1,732,545
TS Hamilton Fund | Short-term investments
Assets
Short-term investments	$ 463,542	$ 428,878

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Reinsurance - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 06, 2020	Dec. 31, 2023	Dec. 31, 2020	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2022
Ceded Credit Risk [Line Items]
Premiums receivable balance, credit provisions		$ 3,000		$ 1,962	$ 3,098	$ 1,962	$ 3,098	$ 3,000	$ 2,153	$ 3,136	$ 2,856
Premiums receivable		658,363		933,211		933,211		658,363
Paid losses recoverable		145,202		147,690		147,690		145,202
Unpaid losses and loss adjustment expenses recoverable		1,161,077		1,160,309	1,162,940	1,160,309	1,162,940	1,161,077			1,177,863
Reinsurance recoverable, provisions		687		755	820	755	820	687	$ 709	$ 792	$ 777
Reinsurance premiums ceded				128,236	120,252	335,297	309,918
Related Party
Ceded Credit Risk [Line Items]
Reinsurance premiums ceded				0	0	14,600	7,200
Risk transfer capacity		200,000	$ 150,000
Reinsurance Contract [Axis]: Loss Portfolio Transfer Agreement
Ceded Credit Risk [Line Items]
Unpaid losses and loss adjustment expenses recoverable		$ 49,800		45,700		45,700		$ 49,800
Reinsurance premiums ceded	$ 72,100
Amortization of the deferred gain				$ 1,000	$ 3,100	$ 1,900	$ 3,400
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk
Ceded Credit Risk [Line Items]
% of total paid and unpaid losses and loss adjustment expenses recoverable						100.00%		100.00%
Reinsurer One | Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk
Ceded Credit Risk [Line Items]
% of total paid and unpaid losses and loss adjustment expenses recoverable						25.00%		27.00%
Reinsurer Two | Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk
Ceded Credit Risk [Line Items]
% of total paid and unpaid losses and loss adjustment expenses recoverable						22.00%		20.00%
Reinsurer Three | Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments | Reinsurer Concentration Risk
Ceded Credit Risk [Line Items]
% of total paid and unpaid losses and loss adjustment expenses recoverable						12.00%		12.00%

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Reinsurance - Schedule of Rollforward of Provision of Company's Premiums Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Schedule of Accounts, Notes, Loans and Financing Receivable [Rollforward]
Beginning balance	$ 2,153	$ 3,136	$ 3,000	$ 2,856
Increase (decrease) in allowance	(191)	(38)	(1,038)	242
Ending balance	$ 1,962	$ 3,098	$ 1,962	$ 3,098

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Reinsurance - Schedule of Rollforward of Provision of Company's Reinsurance Recoverable (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Schedule of Accounts, Notes, Loans and Financing Receivable [Rollforward]
Beginning balance	$ 709	$ 792	$ 687	$ 777
Increase (decrease) in allowance	46	28	68	43
Ending balance	$ 755	$ 820	$ 755	$ 820

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Reinsurance - Schedule of Paid and Unpaid Losses and Loss Adjustment Expenses Recoverable (Details) - Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments - Reinsurer Concentration Risk	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Ceded Credit Risk [Line Items]
% of total paid and unpaid losses and loss adjustment expenses recoverable	100.00%	100.00%
A- or better
Ceded Credit Risk [Line Items]
% of total paid and unpaid losses and loss adjustment expenses recoverable	74.00%	71.00%
Below A-
Ceded Credit Risk [Line Items]
% of total paid and unpaid losses and loss adjustment expenses recoverable	0.30%	0.50%
Collateralized
Ceded Credit Risk [Line Items]
% of total paid and unpaid losses and loss adjustment expenses recoverable	25.70%	28.50%

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Reserve for Losses and Loss Adjustment Expenses - Schedule of Reconciliation of Unpaid Losses and Loss Adjustment Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross unpaid losses and loss adjustment expenses, beginning of period			$ 3,030,037	$ 2,856,275
Reinsurance recoverable on unpaid losses			1,161,077	1,177,863
Net unpaid losses and loss adjustment expenses, beginning of period			1,868,960	1,678,412
Net losses and loss adjustment expenses incurred in respect of losses occurring in:
Current year			436,348	330,458
Prior years			10,498	(2,481)
Total incurred	$ 214,494	$ 179,416	446,846	327,977
Net losses and loss adjustment expenses paid in respect of losses occurring in:
Current year			6,787	10,431
Prior years			224,576	282,252
Total paid			231,363	292,683
Foreign currency revaluation and other			(1,859)	22,454
Net unpaid losses and loss adjustment expenses, end of period	2,082,584	1,736,160	2,082,584	1,736,160
Reinsurance recoverable on unpaid losses	1,160,309	1,162,940	1,160,309	1,162,940
Gross unpaid losses and loss adjustment expenses, end of period	$ 3,242,893	$ 2,899,100	$ 3,242,893	$ 2,899,100

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Reserve for Losses and Loss Adjustment Expenses - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Liability for Claims and Claims Adjustment Expense [Line Items]
Net prior year development, unfavorable (favorable)			$ 10,498	$ (2,481)
Acquisition costs	$ 96,305	$ 76,856	180,858	141,995
Reserve for losses and loss adjustment expenses	3,242,893	2,899,100	3,242,893	2,899,100	$ 3,030,037	$ 2,856,275
Baltimore Bridge
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expenses	37,900		37,900		0
Ukrainian Conflict
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expenses	64,100		64,100		64,900
Covid-19
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expenses	15,600		15,600		$ 14,100
Specialty Contracts
Liability for Claims and Claims Adjustment Expense [Line Items]
Net prior year development, unfavorable (favorable)			12,600	(5,300)
Casualty Lines
Liability for Claims and Claims Adjustment Expense [Line Items]
Net prior year development, unfavorable (favorable)			3,900	(1,200)
Property Contracts
Liability for Claims and Claims Adjustment Expense [Line Items]
Net prior year development, unfavorable (favorable)			(4,400)	6,100
Casualty Lines of Business | Reinsurance Contract [Axis]: Loss Portfolio Transfer Agreement
Liability for Claims and Claims Adjustment Expense [Line Items]
Net prior year development, unfavorable (favorable)			(1,600)	(2,100)
Amortization of the associated deferred gain			1,900	3,400
Net reserves for losses and loss adjustment expenses	$ (300)	$ (1,300)	$ (300)	(1,300)
Attritional Losses
Liability for Claims and Claims Adjustment Expense [Line Items]
Net prior year development, unfavorable (favorable)				(3,600)
Catastrophe Losses
Liability for Claims and Claims Adjustment Expense [Line Items]
Net prior year development, unfavorable (favorable)				$ 1,100

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Segment Reporting - Schedule of Segment Reporting Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) segment	Jun. 30, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			2
Gross premiums written	$ 603,304	$ 504,960	$ 1,325,245	$ 1,043,124
Net premiums written	475,068	384,708	989,948	733,206
Net premiums earned	418,764	331,460	804,067	615,362
Third party fee income	5,989	2,449	13,470	5,452
Losses and loss adjustment expenses	214,494	179,416	446,846	327,977
Acquisition costs	96,305	76,856	180,858	141,995
Other underwriting expenses	48,655	42,743	92,008	81,886
Underwriting income (loss)	65,299	34,894	97,825	68,956
Net realized and unrealized gains (losses) on investments	151,251	19,406	406,622	54,539
Net investment income (loss)	13,720	7,291	26,338	9,650
Other income (loss), excluding third party fee income		(29)
Net foreign exchange gains (losses)	(1,782)	(3,341)	(3,911)	(5,387)
Corporate expenses	(16,262)	(6,491)	(27,764)	(13,154)
Amortization of intangible assets	(3,317)	(2,305)	(6,569)	(5,075)
Interest expense	(6,031)	(5,189)	(11,738)	(10,718)
Income (loss) before income tax	202,878	44,236	480,803	98,811
Income tax expense (benefit)	(2,496)	(2,948)	(3,089)	(4,521)
Net income (loss)	200,382	41,288	477,714	94,290
Net income (loss) attributable to non-controlling interest	69,297	4,501	189,455	6,011
Net income (loss) and other comprehensive income (loss) attributable to common shareholders	$ 131,085	$ 36,787	$ 288,259	$ 88,279
Attritional loss ratio - current year	51.60%	51.00%	54.30%	50.10%
Attritional loss ratio - prior year development	(0.40%)	(1.60%)	1.30%	(0.60%)
Catastrophe loss ratio - current year	0.00%	5.00%	0.00%	3.60%
Catastrophe loss ratio - prior year development	0.00%	(0.30%)	0.00%	0.20%
Loss and loss adjustment expense ratio	51.20%	54.10%	55.60%	53.30%
Acquisition cost ratio	23.00%	23.20%	22.50%	23.10%
Other underwriting expense ratio	10.20%	12.20%	9.80%	12.40%
Combined ratio	84.40%	89.50%	87.90%	88.80%
Operating Segments | International
Segment Reporting Information [Line Items]
Gross premiums written	$ 311,616	$ 277,796	$ 632,457	$ 524,909
Net premiums written	234,305	197,047	419,338	319,067
Net premiums earned	215,643	176,636	412,456	326,151
Third party fee income	3,798	2,401	7,387	5,302
Losses and loss adjustment expenses	112,884	87,575	229,046	157,967
Acquisition costs	53,157	47,260	100,876	84,452
Other underwriting expenses	33,972	29,540	65,174	58,002
Underwriting income (loss)	$ 19,428	$ 14,662	$ 24,747	$ 31,032
Attritional loss ratio - current year	52.50%	52.90%	54.20%	51.60%
Attritional loss ratio - prior year development	(0.20%)	(3.30%)	1.30%	(3.80%)
Catastrophe loss ratio - current year	0.00%	0.90%	0.00%	0.40%
Catastrophe loss ratio - prior year development	0.00%	(0.90%)	0.00%	0.20%
Loss and loss adjustment expense ratio	52.30%	49.60%	55.50%	48.40%
Acquisition cost ratio	24.70%	26.80%	24.50%	25.90%
Other underwriting expense ratio	14.00%	15.40%	14.00%	16.20%
Combined ratio	91.00%	91.80%	94.00%	90.50%
Operating Segments | Bermuda
Segment Reporting Information [Line Items]
Gross premiums written	$ 291,688	$ 227,164	$ 692,788	$ 518,215
Net premiums written	240,763	187,661	570,610	414,139
Net premiums earned	203,121	154,824	391,611	289,211
Third party fee income	2,191	48	6,083	150
Losses and loss adjustment expenses	101,610	91,841	217,800	170,010
Acquisition costs	43,148	29,596	79,982	57,543
Other underwriting expenses	14,683	13,203	26,834	23,884
Underwriting income (loss)	$ 45,871	$ 20,232	$ 73,078	$ 37,924
Attritional loss ratio - current year	50.50%	48.90%	54.30%	48.50%
Attritional loss ratio - prior year development	(0.50%)	0.30%	1.30%	3.00%
Catastrophe loss ratio - current year	0.00%	9.80%	0.00%	7.10%
Catastrophe loss ratio - prior year development	0.00%	0.30%	0.00%	0.20%
Loss and loss adjustment expense ratio	50.00%	59.30%	55.60%	58.80%
Acquisition cost ratio	21.20%	19.10%	20.40%	19.90%
Other underwriting expense ratio	6.20%	8.50%	5.30%	8.20%
Combined ratio	77.40%	86.90%	81.30%	86.90%
Corporate
Segment Reporting Information [Line Items]
Gross premiums written	$ 0	$ 0	$ 0	$ 0
Net premiums written	0	0	0	0
Net premiums earned	0	0	0	0
Third party fee income	0	0	0	0
Losses and loss adjustment expenses	0	0	0	0
Acquisition costs	0	0	0	0
Other underwriting expenses	0	0	0	0
Underwriting income (loss)	0	0	0	0
Net realized and unrealized gains (losses) on investments	151,251	19,406	406,622	54,539
Net investment income (loss)	13,720	7,291	26,338	9,650
Other income (loss), excluding third party fee income		(29)
Net foreign exchange gains (losses)	(1,782)	(3,341)	(3,911)	(5,387)
Corporate expenses	(16,262)	(6,491)	(27,764)	(13,154)
Amortization of intangible assets	(3,317)	(2,305)	(6,569)	(5,075)
Interest expense	(6,031)	(5,189)	(11,738)	(10,718)
Income tax expense (benefit)	(2,496)	(2,948)	(3,089)	(4,521)
Net income (loss) attributable to non-controlling interest	$ 69,297	$ 4,501	$ 189,455	$ 6,011

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Segment Reporting - Schedule of Gross Premiums Written by Geographical Location of Subsidiaries (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	$ 603,304	$ 504,960	$ 1,325,245	$ 1,043,124
Total International
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	311,616	277,796	632,457	524,909
Lloyd's of London
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	199,378	169,463	397,959	318,171
Ireland
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	85,053	90,968	184,126	174,731
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	27,185	17,365	50,372	32,007
Bermuda
Revenues from External Customers and Long-Lived Assets [Line Items]
Gross premiums written	$ 291,688	$ 227,164	$ 692,788	$ 518,215

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Debt and Credit Facilities - Narrative (Details) - USD ($)						3 Months Ended		6 Months Ended
	Apr. 30, 2024	Oct. 27, 2023	Oct. 26, 2023	Aug. 11, 2023	Jun. 23, 2022	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Aug. 08, 2023
Line of Credit Facility [Line Items]
Line of credit facility, outstanding						$ 731,472,000		$ 731,472,000
Interest expense						6,031,000	$ 5,189,000	11,738,000	$ 10,718,000
Unsecured Debt | Facility
Line of Credit Facility [Line Items]
Face amount					$ 150,000,000
Increase in interest rate in event of default					2.00%
Amortization of debt issuance costs						100,000	$ 100,000	100,000	$ 100,000
Line of Credit | Uncommitted Secured Letter Of Credit Facility | Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity										$ 200,000,000
Line of Credit | Unsecured Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity					$ 415,000,000
Line of credit facility, outstanding						$ 0		$ 0
Unused commitment fee percentage	0.175%				0.225%
Line of Credit | Unsecured Facility | Letter of Credit
Line of Credit Facility [Line Items]
Stated interest rate	1.375%				1.50%
Line of Credit | Unsecured Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity					$ 150,000,000
Line of Credit | Bank of Montreal, Letter of Credit Facility | Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity				$ 50,000,000
Unused commitment fee percentage				0.15%
Commitment fee percentage				0.40%
Line of Credit | UBS Letter of Credit Facility | Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			$ 100,000,000
Commitment fee percentage			1.40%
Line of Credit | Unsecured Facility, Lloyd's | Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 230,000,000
Commitment fee percentage		1.625%
Term of debt agreement		1 year
Secured Overnight Financing Rate (SOFR) | Line of Credit | Unsecured Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.625%				1.85%

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Debt and Credit Facilities - Schedule of Company Compliance (Details) - Facility - Unsecured Debt - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Line of Credit Facility [Line Items]
Outstanding loan balance	$ 150,000	$ 150,000
Fair value of debt	150,600	151,000
Unamortized issuance costs	$ 113	$ 170

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Debt and Credit Facilities - Schedule of Credit Facilities (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Line of Credit Facility [Line Items]
Available letter of credit and revolving loan facilities - commitments	$ 995,000
Available letter of credit and revolving loan facilities - in use	731,472
TS Hamilton Fund
Line of Credit Facility [Line Items]
Security pledged under letter of credit and revolving loan facilities:	233,014
Fixed Income Portfolio
Line of Credit Facility [Line Items]
Security pledged under letter of credit and revolving loan facilities:	252,056
Cash
Line of Credit Facility [Line Items]
Security pledged under letter of credit and revolving loan facilities:	$ 4,017

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Share Capital - Schedule of Share Capital (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock authorized (in shares)	150,000,000	150,000,000	150,000,000	135,000,000	135,000,000	135,000,000
Common stock issued (in shares)	101,922,771	111,003,013	110,225,103	103,683,894	103,730,442	103,087,859
Common stock outstanding (in shares)	101,922,771	111,003,013	110,225,103	103,683,894	103,730,442	103,087,859
Common shares	$ 1,019		$ 1,101
Common Class A
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock authorized (in shares)	28,644,807	28,644,807	28,644,807	53,993,690	53,993,690	53,993,690
Common stock issued (in shares)	19,520,078	28,644,807	28,644,807	30,520,078	30,520,078	30,520,078
Common stock outstanding (in shares)	19,520,078	28,644,807	28,644,807	30,520,078	30,520,078	30,520,078
Common shares	$ 195		$ 286
Common Class B
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock authorized (in shares)	72,837,352	72,337,352	72,337,352	50,480,684	50,480,684	50,480,684
Common stock issued (in shares)	57,358,464	56,813,977	56,036,067	42,638,190	42,684,738	42,042,155
Common stock outstanding (in shares)	57,358,464	56,813,977	56,036,067	42,638,190	42,684,738	42,042,155
Common shares	$ 574		$ 560
Common Class C
Class of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock authorized (in shares)	25,044,229	25,544,229	25,544,229	30,525,626	30,525,626	30,525,626
Common stock issued (in shares)	25,044,229	25,544,229	25,544,229	30,525,626	30,525,626	30,525,626
Common stock outstanding (in shares)	25,044,229	25,544,229	25,544,229	30,525,626	30,525,626	30,525,626
Common shares	$ 250		$ 255

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Share Capital - Schedule of Common Stock Authorized (Details) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares - beginning of period (in shares)	150,000,000	150,000,000
Share class conversions (in shares)	0	0
Common shares - end of period (in shares)	150,000,000	150,000,000
Common stock authorized (in shares)	150,000,000	150,000,000	135,000,000	135,000,000	135,000,000
Common Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares - beginning of period (in shares)	28,644,807	28,644,807
Share class conversions (in shares)	0	0
Common shares - end of period (in shares)	28,644,807	28,644,807
Common stock authorized (in shares)	28,644,807	28,644,807	53,993,690	53,993,690	53,993,690
Common Class B
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares - beginning of period (in shares)	72,337,352	72,337,352
Share class conversions (in shares)	500,000	500,000
Common shares - end of period (in shares)	72,837,352	72,837,352
Common stock authorized (in shares)	72,837,352	72,837,352	50,480,684	50,480,684	50,480,684
Common Class C
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares - beginning of period (in shares)	25,544,229	25,544,229
Share class conversions (in shares)	(500,000)	(500,000)
Common shares - end of period (in shares)	25,044,229	25,044,229
Common stock authorized (in shares)	25,044,229	25,044,229	30,525,626	30,525,626	30,525,626
Unclassified Common Class
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares - beginning of period (in shares)	23,473,612	23,473,612
Share class conversions (in shares)	0	0
Common shares - end of period (in shares)	23,473,612	23,473,612
Common stock authorized (in shares)	23,473,612	23,473,612	0	0	0

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Share Capital - Schedule of Common Stock Issued and Outstanding (Details) - shares		3 Months Ended		6 Months Ended
	May 08, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued - beginning of period (in shares)		111,003,013	103,730,442	110,225,103	103,087,859
Common shares outstanding - beginning of period (in shares)		111,003,013	103,730,442	110,225,103	103,087,859
Vesting of awards (in shares)				761,261	735,013
Share class conversions (in shares)		0		0
Exercise of awards (in shares)		44,487		245,779
Director share awards granted (in shares)				20,383	24,780
Share repurchases (in shares)		(9,124,729)	(46,548)	(9,329,755)	(163,758)
Common shares issued - end of period (in shares)		101,922,771	103,683,894	101,922,771	103,683,894
Common shares outstanding - end of period (in shares)		101,922,771	103,683,894	101,922,771	103,683,894
Common Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued - beginning of period (in shares)		28,644,807	30,520,078	28,644,807	30,520,078
Common shares outstanding - beginning of period (in shares)		28,644,807	30,520,078	28,644,807	30,520,078
Vesting of awards (in shares)				0	0
Share class conversions (in shares)		0		0
Exercise of awards (in shares)		0		0
Director share awards granted (in shares)				0	0
Share repurchases (in shares)	(9,124,729)	(9,124,729)	0	(9,124,729)	0
Common shares issued - end of period (in shares)		19,520,078	30,520,078	19,520,078	30,520,078
Common shares outstanding - end of period (in shares)		19,520,078	30,520,078	19,520,078	30,520,078
Common Class B
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued - beginning of period (in shares)		56,813,977	42,684,738	56,036,067	42,042,155
Common shares outstanding - beginning of period (in shares)		56,813,977	42,684,738	56,036,067	42,042,155
Vesting of awards (in shares)				761,261	735,013
Share class conversions (in shares)		500,000		500,000
Exercise of awards (in shares)		44,487		245,779
Director share awards granted (in shares)				20,383	24,780
Share repurchases (in shares)		0	(46,548)	(205,026)	(163,758)
Common shares issued - end of period (in shares)		57,358,464	42,638,190	57,358,464	42,638,190
Common shares outstanding - end of period (in shares)		57,358,464	42,638,190	57,358,464	42,638,190
Common Class C
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued - beginning of period (in shares)		25,544,229	30,525,626	25,544,229	30,525,626
Common shares outstanding - beginning of period (in shares)		25,544,229	30,525,626	25,544,229	30,525,626
Vesting of awards (in shares)				0	0
Share class conversions (in shares)		(500,000)		(500,000)
Exercise of awards (in shares)		0		0
Director share awards granted (in shares)				0	0
Share repurchases (in shares)		0	0	0	0
Common shares issued - end of period (in shares)		25,044,229	30,525,626	25,044,229	30,525,626
Common shares outstanding - end of period (in shares)		25,044,229	30,525,626	25,044,229	30,525,626

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Share Capital - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended
	May 08, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Class of Stock [Line Items]
Share repurchases (in shares)		9,124,729	46,548	9,329,755	163,758
Percent of combined voting power, Class A and Class B		9.50%		9.50%
Common Class A
Class of Stock [Line Items]
Share repurchases (in shares)	9,124,729	9,124,729	0	9,124,729	0
Shares acquired (in dollars per share)	$ 12.00
Share repurchases	$ 109.5
Common Class B
Class of Stock [Line Items]
Share repurchases (in shares)		0	46,548	205,026	163,758
Percent of combined voting power, Class A and Class B		14.92%		14.92%

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Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net income (loss) attributable to common shareholders	$ 131,085	$ 36,787	$ 288,259	$ 88,279
Denominator:
Weighted average common shares outstanding - basic (in shares)	105,909,000	103,732,000	108,416,000	103,714,000
Effect of dilutive securities (in shares)	3,694,000	1,163,000	3,656,000	1,027,000
Weighted average common shares outstanding - diluted (in shares)	109,603,000	104,895,000	112,072,000	104,741,000
Basic income (loss) per share attributable to common shareholders (in dollars per share)	$ 1.24	$ 0.35	$ 2.66	$ 0.85
Diluted income (loss) per share attributable to common shareholders (in dollars per share)	$ 1.20	$ 0.35	$ 2.57	$ 0.84
Anti-dilutive shares excluded from the calculation of diluted income (loss) per share (in shares)	300,000	0	200,000	0

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Subsequent Events - Narrative (Details) $ in Millions	Aug. 07, 2024 USD ($)
Subsequent Event
Subsequent Event [Line Items]
Share repurchase authorization	$ 150