During the first quarter of 2020, Innoviva acquired 8,710,800 shares of common stock as well as warrants to purchase 8,710,800 additional shares of common stock of Armata Pharmaceuticals, Inc. (“Armata”) for approximately $25.0 million in cash. Armata is a clinical stage biotechnology company focused on precisely targeted bacteriophage therapeutics for antibiotic-resistant infections.

During the first quarter of 2021, ISO entered into a securities purchase agreement with Armata to acquire 6,153,847 shares of Armata common stock and warrants to purchase 6,153,847 additional shares of Armata common stock for approximately $20.0 million. Armata also entered into a voting agreement with the Company and ISO, pursuant to which the Company and ISO agreed not to vote or take any action by written consent with respect to any common shares held by the Company and ISO that represent, in the aggregate, more than 49.5% of the total number of shares of Armata’s common stock for voting on the matters related to election or removal of Armata’s board members. The voting agreement will expire the earlier of the second anniversary of the agreement effective date and approval by the FDA of any of Armata’s product candidates for marketing and commercial distribution. During the fourth quarter of 2021, ISO also purchased an additional 1,212,122 shares of Armata common stock for approximately $4.0 million.

On February 9, 2022, ISO entered into a securities purchase agreement with Armata to acquire 9,000,000 shares of Armata common stock and warrants to purchase 4,500,000 additional shares of common stock with an exercise price of $5.00 per share for $45.0 million. The investment closed in two tranches on February 9, 2022 and March 31, 2022. The investment is intended to aid Armata in advancing its clinical pipeline and strengthening its bacteriophage platform. On February 9, 2022, Armata also entered a second amended and restated voting agreement with the Company and ISO, pursuant to which the Company and ISO agreed not to vote or take any action by written consent with respect to any common shares held by the Company and ISO that represent, in the aggregate, more than 49.5% of the total number of shares of Armata’s common stock for voting on the matters related to election or removal of Armata’s board members or amend the bylaws of Armata to reduce the maximum number of directors or set the number of directors who may serve on the board of Armata. The voting agreement will expire the earlier of the second anniversary of the agreement effective date and approval by the FDA of any of Armata’s product candidates for marketing and commercial distribution. In addition, as of February 9, 2022, Armata entered into an amended and restated investor rights agreement with the Company and ISO, pursuant to which for as long as the Company and ISO hold at least 12.5% of the outstanding shares of Armata’s common stock on a fully-diluted, the Company and ISO shall have the right to designate two directors to Armata’s board of directors, and for so long as the Company and ISO hold at least 8%, but less than 12.5%, of the outstanding shares of Armata’s common stock on a fully-diluted basis, the Company and ISO shall have the right to designate one director to Armata’s board of directors, subject to certain conditions and qualifications set forth in the amended and restated investor rights agreement. On July 10, 2023, Armata entered into an amendment to the amended and restated investor rights agreement with the Company and ISO, pursuant to which the Company and ISO agreed that the voting agreement will expire on the earlier of the fifth anniversary of the original agreement's effective date, January 26, 2021, or the approval by the FDA of any of Armata’s product candidates for marketing and commercial distribution. As of March 31, 2024, three of the seven members of Armata’s board of directors are also members of the board of directors of Innoviva. As of March 31, 2024 and December 31, 2023, the Company and ISO owned approximately 69.4%, of Armata’s common stock.

On January 10, 2023, we entered into a Secured Convertible Credit Agreement (the “Credit Agreement”) with Armata, under which we extended a one-year convertible note (the “Armata Convertible Note”) in an aggregate amount of $30.0 million at an interest rate of 8.0% per annum. Pursuant to the Credit Agreement, the balance on the Armata Convertible Note, including all accrued and unpaid interest thereon, will convert into shares of Armata's common stock upon the occurrence of a qualified financing, as defined in the Credit Agreement. Any portion of the balance on the Armata Convertible Note, including all accrued and unpaid interest thereon, may also be converted into shares of Armata's common stock at our option once a registration statement covering the resale of such securities has been declared effective by the SEC. The Armata Convertible Note is secured by substantially all of the assets of Armata and its domestic and foreign material subsidiaries. On July 10, 2023, ISO and Armata executed an amendment to the Armata Convertible Note extending the maturity date from January 10, 2024 to January 10, 2025.

On July 10, 2023, ISO and Armata entered into a Credit and Security Agreement (the “July 2023 Credit and Security Agreement”), under which we extended a term loan to Armata (the “Armata July 2023 Term Loan”) in an aggregate amount of $25.0 million. The Armata July 2023 Term Loan is subject to an interest rate of 14% per annum and is due to mature on January 10, 2025. The July 2023 Credit and Security Agreement is secured by substantially all of the assets of Armata and its domestic and foreign material subsidiaries.

On March 4, 2024, ISO and Armata entered into a Credit and Security Agreement (the “March 2024 Credit and Security Agreement”), under which we extended a term loan to Armata (the “Armata March 2024 Term Loan”) in an aggregate amount of $35.0 million. The Armata March 2024 Term Loan is subject to an interest rate of 14% per annum and is due to mature on June 4, 2025. The March 2024 Credit and Security Agreement is secured by substantially all of the assets of Armata and its domestic and foreign material subsidiaries.

The investments in Armata’s common stock and warrants provide Innoviva and ISO the ability to have significant influence, but not control over Armata’s operations. Armata’s business and affairs are managed under the direction of its board of directors, which Innoviva and ISO do not control. Based on our evaluation, we determined that Armata is a VIE, but Innoviva and ISO are not the primary beneficiary of the VIE. We have not provided financial or other support that we were not previously contractually required to provide during the periods presented. Our maximum exposure to loss is equal to the amount we invested in the entity.

We account for Armata’s common stock and warrants under the equity method using the fair value option. The fair value of Armata’s common stock is measured based on its closing market price. The warrants purchased in 2020, 2021 and 2022 have an exercise price of $2.87, $3.25 and $5.00 per share, respectively. All warrants are exercisable immediately within five years from the issuance date of the warrants and include a cashless exercise option. We use the Black-Scholes-Merton pricing model to estimate the fair value of these warrants with the following input assumptions: Armata’s closing market price on the valuation date, the risk-free interest rate computed based on the U.S. Treasury yield, the remaining contractual term as the expected term, and the expected stock price volatility calculated based on the historical volatility of the common stock of Armata and its peer companies. We account for the Armata Convertible Note as a trading security, measured at fair value using a Monte Carlo simulation model with the probability of certain qualified events and the assumptions of risk-free rate, volatility of stock price and timing of certain qualified events. We account for the Armata July 2023 Term Loan and the Armata March 2024 Term Loan as trading securities, measured at fair value using income approach based on the discounted value of expected future cash flows.

As of March 31, 2024, the fair values of our holdings of Armata common stock, warrants, the Armata Convertible Note, the Armata July 2023 Term Loan and the Armata March 2024 Term Loan were estimated at $104.8 million, $47.1 million, $64.3 million, $27.4 million, and $35.5 million, respectively. As of December 31, 2023, the fair values of our holdings of Armata common stock, warrants, the Armata Convertible Note and the Armata July 2023 Term Loan were estimated at $81.2 million, $35.3 million, $51.9 million and $27.0 million, respectively.

For the Armata common stock and warrants, we recorded $35.3 million and $15.8 million in unrealized gain for the three months ended March 31, 2024 and 2023, respectively, as changes in fair values of equity method investments, net, in the unaudited condensed consolidated statements of income and comprehensive income. For the Armata Convertible Note, we recorded $12.4 million and $2.8 million unrealized gain as changes in fair values of equity and long-term investments, net, in the unaudited condensed consolidated statements of income and comprehensive income for three months ended March 31, 2024 and 2023, respectively. For the July 2023 Armata Term Loan, we recorded $0.4 million unrealized gain as changes in fair values of equity and long-term investments, net, in the unaudited condensed consolidated statements of income and comprehensive income for three months ended March 31, 2024. For the March 2024 Armata Term Loan, we recorded $0.5 million unrealized gain as changes in fair values of equity and long-term investments, net, in the unaudited condensed consolidated statements of income and comprehensive income for three months ended March 31, 2024.

During the third quarter of 2020, TRC purchased 20,469,432 shares of Series C preferred stock and a warrant to purchase 5,117,358 additional shares of Series C preferred stock of InCarda Therapeutics, Inc. (“InCarda”) (the “InCarda 2020 Warrant”) for $15.8 million, which included $0.8 million of transaction costs. InCarda is a privately held biopharmaceutical company focused on developing inhaled therapies for cardiovascular diseases. The investment is intended to fund the ongoing clinical development of InRhythmTM (flecainide for inhalation), InCarda’s lead program, for the treatment of a recent-onset episode of paroxysmal atrial fibrillation. On July 20, 2022, under the terms of the TRC Equity Purchase Agreement, TRC transferred to Innoviva’s wholly-owned subsidiary, Innoviva TRC Holdings, LLC (“ITH”) all of TRC’s ownership interests and investments in InCarda. ITH has the right to designate one member to InCarda’s board of directors. As of March 31, 2024, none of InCarda’s six board members was designated by ITH. We did not exercise the InCarda 2020 Warrant which expired in March 2023 and wrote off its carrying value of $0.1 million during the three months ended March 31, 2023.

On March 9, 2022, TRC entered into a Note and Warrant Purchase Agreement (the “InCarda Agreement”) with InCarda to acquire a convertible promissory note (the “InCarda 2022 Convertible Note”) and warrants (the “InCarda 2022 Warrant”) for $0.7 million. The InCarda 2022 Warrant expires on March 9, 2027 and is measured at fair value.

On June 15, 2022, the principal amount and the accrued interest of the InCarda 2022 Convertible Note were converted into equity securities. In addition, TRC participated in InCarda’s Series D preferred stock financing by investing $2.3 million. In connection with the new round of financing, InCarda recapitalized its equity structure resulting in TRC owning 4,093,886 shares of InCarda’s common stock, 37,350 shares of its Series A-1 preferred stock, 20,469,432 shares of its Series C preferred stock, 8,771,780 shares of its Series D-1 preferred stock, 3,369,802 shares of its Series D-2 preferred stock, a warrant to purchase 5,117,358 shares of its Series C preferred stock at $0.73 per share and a warrant to purchase 2,490,033 shares of its Series D-1 preferred stock at $0.20 per share.

Due to certain changes in InCarda’s business operations during the second quarter of 2023, ITH reassessed the value of its investments in InCarda using the Option Pricing Model methodology. Key assumptions used in the valuation model included an expected holding period of two years, a risk-free interest rate of 4.9%, a dividend yield of 0.0% and an estimated volatility of 114.2%. The estimated volatility was calculated based on the historical volatility of a selected peer group of public companies comparable to InCarda. We recognized an impairment charge of $2.9 million during the second quarter of 2023.

On January 17, 2024, ITH purchased a secured convertible promissory note (the “InCarda Convertible Note”) from InCarda for a total purchase price of $0.4 million. The InCarda Convertible Note bears an annual interest rate of 8% and shall be due and payable upon the earlier to occur of certain events defined in the InCarda Convertible Note. The InCarda Convertible Note will convert into equity securities or shadow equity securities of InCarda depending upon the occurrence of a qualified event or a qualified financing event as also defined in the InCarda Convertible Note. The InCarda Convertible Note is secured by certain intellectual property rights of InCarda.

As of March 31, 2024 and December 31, 2023, we held 8.1% of InCarda equity ownership. Our investment in InCarda does not provide us with the ability to control or have significant influence over InCarda’s operations. Based on our evaluation, we determined that InCarda is a VIE, but we are not the primary beneficiary of the VIE. We have not provided financial or other support that we were not previously contractually required to provide during the periods presented. Our maximum exposure to loss is equal to the amount we invested in the entity.

With the exception of the InCarda Convertible Note and the InCarda Series D Warrants, we account for our investments in InCarda under the measurement alternative. Under the measurement alternative, the equity investment is initially recorded at its allocated cost, but the carrying value may be adjusted through earnings upon an impairment or when there is an observable price change involving the same or a similar investment with the same issuer. Due to InCarda’s equity recapitalization in the second quarter of 2022, TRC reassessed the value of its investments in InCarda using the Option Pricing Model Backsolve valuation methodology. Key assumptions used in the valuation model included an expected holding period of two years, a risk-free interest rate of 3.2%, a dividend yield of 0.0% and an estimated volatility of 122.0%. The estimated volatility was calculated based on the historical volatility of a selected peer group of public companies comparable to InCarda. We recognized an impairment charge of $9.0 million during the second quarter of 2022. We account for the InCarda Convertible Note as a trading security, measured at fair value.

As of March 31, 2024 and December 31, 2023, we recorded as equity and long-term investments in the unaudited condensed consolidated balance sheets $4.8 million in fair value of InCarda’s Series C preferred stock and $0.1 million in fair value of the InCarda Series D Warrants. As of March 31, 2024 and December 31, 2023, we recognized as equity and long-term investments in the unaudited condensed consolidated balance sheets $2.7 million, for InCarda’s Series D-1 preferred stock, Series D-2 preferred stock, and common stock using the measurement alternative. As of March 31, 2024, we recorded $0.4 million in fair value of the InCarda Convertible Note as equity and long-term investments in the unaudited condensed consolidated balance sheet. During the three months ended March 31, 2024, there was immaterial change in the carrying amount of our investments. During the three months ended March 31, 2023, we recorded $0.1 million in net unrealized loss as changes in fair values of equity and long-term investments, net in the unaudited condensed consolidated statements of income and comprehensive income.

On March 18, 2021, TRC entered into a securities purchase agreement with ImaginAb, to purchase 4,051,724 shares of ImaginAb Series C preferred stock for $4.7 million. On the same day, TRC also entered into a securities purchase agreement with one of ImaginAb’s common stockholders to purchase 4,097,157 shares of ImaginAb common stock for $1.3 million. ImaginAb is a privately held biotechnology company focused on clinically managing cancer and autoimmune diseases via molecular imaging. $0.4 million was incurred for investment due diligence costs and execution and recorded as part of the equity investment in the condensed consolidated balance sheets.

On July 20, 2022, under the terms of the TRC Equity Purchase Agreement, TRC transferred to ITH all of TRC’s ownership interests and investments in ImaginAb.

On March 14, 2023, ITH entered into a securities purchase agreement with ImaginAb to purchase 270,568 shares of ImaginAb Series C-2 preferred stock for $0.6 million. On September 14, 2023, ITH entered into a securities purchase agreement with ImaginAb to purchase another 405,852 shares of ImaginAb Series C-2 preferred stock for $0.6 million.

On February 23, 2024, ITH purchased a subordinated convertible promissory note (the “ImaginAb Convertible Note”) from ImaginAb for a total purchase price of $2.7 million. The ImaginAb Convertible Note bears an annual interest rate of 10% and shall be due and payable upon the earlier to occur of January 31, 2025 and certain events defined in the ImaginAb Convertible Note. Under certain circumstances, the ImaginAb Convertible Note is convertible at the option of ITH into ImaginAb’s equity securities at defined conversion prices. The ImaginAb Convertible Note is subordinate to certain existing indebtedness of ImaginAb as defined in the ImaginAb Convertible Note.

As of March 31, 2024, one of ImaginAb’s six board members was designated by ITH. As of March 31, 2024 and December 31, 2023, we held 11.8% and 12.4%, respectively, of ImaginAb equity ownership.

Our investment in ImaginAb does not provide us with the ability to control or have significant influence over ImaginAb’s operations. Based on our evaluation, we determined that ImaginAb is a VIE, but we are not the primary beneficiary of the VIE. We have not provided financial or other support that we were not previously contractually required to provide during the periods presented. Our maximum exposure to loss is equal to the amount we invested in the entity.

Because ImaginAb’s equity securities are not publicly traded and do not have a readily determinable fair value, we account for our investment in ImaginAb’s Series C preferred stock, Series C-2 preferred stock and common stock using the measurement alternative. We account for the ImaginAb Convertible Note as a trading security, measured at fair value using a Monte Carlo simulation model with the probability of certain qualified events and the assumptions of risk-free rate, volatility of stock price and timing of certain qualified events. As of March 31, 2024 and December 31, 2023, our investment in ImaginAb’s Series C preferred stock, Series C-2 preferred stock and common stock amounted to $7.6 million and recorded as equity and long-term investments in the unaudited condensed consolidated balance sheets. As of March 31, 2024, we recorded $2.9 million in fair value of the ImaginAb Convertible Note as equity and long-term investments in the unaudited condensed consolidated balance sheet. During the three months ended March 31, 2024, we recorded $0.2 million in net unrealized loss on the ImaginAb Convertible Note as changes in fair values of equity and long-term investments, net in the unaudited condensed consolidated statements of income and comprehensive income. There was no change in the carrying amount of our equity investments in ImaginAb.

On November 24, 2021, TRC entered into a Convertible Promissory Note Purchase Agreement with Gate to acquire a convertible promissory note (the “Gate Convertible Note”) with a principal amount of $15.0 million. Gate is a privately held biopharmaceutical company focused on developing the next generation of targeted nervous system therapies, leveraging precision medicine approaches to develop breakthrough drugs for psychiatric and neurologic diseases. The investment is intended to fund Gate's ongoing development and research. The Gate Convertible Note bears an annual interest rate of 8% and will convert into shares of common stock of Gate upon a qualified event or into shares of shadow preferred stock of Gate (“Shadow Preferred”) upon a qualified financing. A qualifying event can be a qualified initial price offering, a qualified merger, or a merger with a special-purpose acquisition company (“SPAC”). Shadow Preferred means preferred stock having identical rights, preferences and restrictions as the preferred stock that would be issued in a qualified financing.

The number of common stock shares to be issued in a qualified event shall be equal to the amount due on the conversion date divided by the lesser of a capped conversion price (the “Capped Conversion Price”) and the qualified event price (the “Qualified Event Price”). The Capped Conversion Price is calculated as $50.0 million divided by the number of shares of common stock outstanding at such time on a fully diluted basis. The Qualified Event Price is the price per share determined by the qualified event. A qualified financing is a sale or series of sales of preferred stock where (i) at least 50 percent of counterparties are not existing shareholders, (ii) net proceeds to Gate are at least $35.0 million, and (iii) the stated or implied equity valuation of Gate is at least $80.0 million.

On July 20, 2022, under the terms of the TRC Equity Purchase Agreement, TRC transferred to ITH all of TRC’s debt investments in Gate.

On February 2, 2023, ITH entered into a Note Amendment Agreement (the “Note Amendment Agreement”) with Gate to amend the Gate Convertible Note. Pursuant to the Note Amendment Agreement, the principal amount of the Gate Convertible Note was increased from $15.0 million to $21.5 million, which represents the original principal and accrued interest as of the first amendment date and an additional cash investment of $5.0 million. All other material terms of the Gate Convertible Note were unchanged.

On October 6, 2023, ITH entered into a Second Note Amendment Agreement with Gate to amend the Note Amendment Agreement. Pursuant to the Second Note Amendment Agreement, the principal amount of the Gate Convertible Note was increased from $21.5 million to $27.7 million, which represents the principal and accrued interest as of the second amendment date and an additional cash investment of $5.0 million. All other material terms of the Gate Convertible Note were unchanged.

On February 13, 2024, ITH entered into a Third Note Amendment Agreement with Gate to amend the Gate Convertible Note. Pursuant to the Third Note Amendment Agreement, the principal amount of the Gate Convertible Note was increased from $27.7 million to $33.5 million, which represents the principal and accrued interest as of the third amendment date and an additional cash investment of $5.0 million. All other material terms of the Gate Convertible Note were unchanged.

We have accounted for the Gate Convertible Note as a trading security, measured at fair value using a Monte Carlo simulation model with the probability of certain qualified events and the assumptions of equity value of Gate, risk-free rate, expected stock price, volatility of its peer companies, and the time until a financing is raised. As of March 31, 2024 and December 31, 2023, the fair value of the Gate Convertible Note was estimated at $33.2 million and $28.0 million, respectively, and recorded as equity and long-term investments in the unaudited condensed consolidated balance sheets. We recorded $0.6 million and $0.7 million unrealized loss as changes in fair values of equity and long-term investments, net in the unaudited condensed consolidated statements of income and comprehensive income for the three months ended March 31, 2024 and 2023, respectively.

On February 18, 2022, TRC entered into an investment and shareholders agreement with Nanolive to purchase 18,750,000 shares of Nanolive Series C preferred stock for $9.8 million (equivalent to 9.0 million CHF). Nanolive SA is a Swiss privately held life sciences company focused on developing breakthrough imaging solutions that accelerate research in growth industries such as drug discovery and cell therapy. $0.7 million was incurred for investment due diligence costs and execution and recorded as part of the equity and long-term investment in the condensed consolidated balance sheets. On July 20, 2022, under the terms of the TRC Equity Purchase Agreement, TRC transferred to ITH all of TRC’s ownership interests and investments in Nanolive. ITH has the right to designate one member to Nanolive’s board. ITH also has the right to designate another member, who will be mutually acceptable to ITH and another stockholder, to Nanolive’s board. As of March 31, 2024, no Innoviva designee is serving on Nanolive’s seven-member board. As of March 31, 2024 and December 31, 2023, we held 15.3% of Nanolive equity ownership.

Our investment in Nanolive does not provide us with the ability to control or have significant influence over Nanolive’s operations. Based on our evaluation, we determined that Nanolive is a VIE, but we are not the primary beneficiary of the VIE. We have not provided financial or other support that we were not previously contractually required to provide during the periods presented. Our maximum exposure to loss is equal to the amount we invested in the entity.

Because Nanolive’s equity securities are not publicly traded and do not have a readily determinable fair value, we account for our investment in Nanolive’s Series C preferred stock using the measurement alternative. As of March 31, 2024 and December 31, 2023, $10.6 million was recorded as equity and long-term investments in the unaudited condensed consolidated balance sheets and there was no change to the carrying amount of our investment.

The estimated fair value of available-for-sale securities is based on quoted market prices for these investments that were based on prices obtained from a commercial pricing service. Available-for-sale securities are summarized below:


	March 31, 2024
			Gross		Gross
	Amortized		Unrealized		Unrealized		Estimated
(In thousands)	Cost		Gains		Losses		Fair Value
Money market funds(1)	$	151,836	$	—	$	—	$	151,836
Total	$	151,836	$	—	$	—	$	151,836

(1) Money market funds are included in cash and cash equivalents in the condensed consolidated balance sheets.


	December 31, 2023
			Gross		Gross
	Amortized		Unrealized		Unrealized		Estimated
(In thousands)	Cost		Gains		Losses		Fair Value
Money market funds (1)	$	170,706	$	—	$	—	$	170,706
Total	$	170,706	$	—	$	—	$	170,706

(1) Money market funds are included in cash and cash equivalents in the condensed consolidated balance sheets.

As of March 31, 2024 and December 31, 2023, all investments were money market funds, and there was no credit loss recognized.

Our available-for-sale securities, equity and long-term investments and contingent value rights are measured at fair value on a recurring basis and our debt is carried at amortized cost basis.


	Estimated Fair Value Measurements as of March 31, 2024 Using:
	Quoted Price in Active Markets for		Significant Other		Significant
	Identical		Observable		Unobservable
Types of Instruments	Assets		Inputs		Inputs
(In thousands)	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	151,836	$	—	$	—	$	151,836
Investments held by ISP Fund LP (1)		225,521		—		61,618		287,139
Equity investment - Armata Common Stock		104,821		—		—		104,821
Equity investment - Armata Warrants		—		47,067		—		47,067
Equity investment - InCarda Warrants		—		—		75		75
Convertible debt investment - Armata Note		—		—		64,254		64,254
Term loan investment - Armata July 2023 Term Loan		—		—		27,426		27,426
Term loan investment - Armata March 2024 Term Loan		—		—		35,479		35,479
Convertible debt investment - InCarda Note		—		—		436		436
Convertible debt investment - ImaginAb Note		—		—		2,894		2,894
Convertible debt investment - Gate Note		—		—		33,201		33,201
Total assets measured at estimated fair value	$	482,178	$	47,067	$	225,383	$	754,628
Liabilities
Debt
2025 Notes	$	—	$	205,325	$	—	$	205,325
2028 Notes		—		230,333		—		230,333
Total fair value of debt	$	—	$	435,658	$	—	$	435,658
Contingent value rights		—		—		325		325
Total liabilities measured at estimated fair value	$	—	$	435,658	$	325	$	435,983

(1)

The investments held by ISP Fund LP consisted of $225.7 million in equity investments, which included private placement positions of $61.6 million, and $61.4 million in money market funds, cash and interest receivable. A certain portion of the total capital contribution of $300.0 million is no longer subject to a 36-month lock-up period from the date of such capital contribution. However, we did not elect to make a withdrawal in 2023, thereby extending the lock-up period and withdrawal elections into subsequent years.


	Estimated Fair Value Measurements as of December 31, 2023 Using:
	Quoted Price
	in Active		Significant
	Markets for		Other		Significant
	Identical		Observable		Unobservable
Types of Instruments	Assets		Inputs		Inputs
(In thousands)	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	170,706	$	—	$	—	$	170,706
Investments held by ISP Fund LP (1)		251,207		—		60,605		311,812
Equity investment - Armata Common Stock		81,249		—		—		81,249
Equity investment - Armata Warrants		—		35,297		—		35,297
Convertible debt investment - Armata Note						51,883		51,883
Term loan investment - Armata July 2023 Term Loan		—		—		27,044		27,044
Convertible debt investment - Gate Note		—		—		27,972		27,972
Total assets measured at estimated fair value	$	503,162	$	35,297	$	167,504	$	705,963
Liabilities
Debt
2025 Notes		—		200,407		—		200,407
2028 Notes		—		227,070		—		227,070
Total fair value of debt	$	—	$	427,477	$	—	$	427,477
Contingent value rights		—		—		359		359
Total liabilities at estimated fair value	$	—	$	427,477	$	359	$	427,836

(1)

The investments held by ISP Fund LP, consisted of $248.5 million in equity investments, which included private placement positions of $60.6 million, and $62.9 million in money market funds. A certain portion of the total capital contribution of $300.0 million is no longer subject to a 36-month lock-up period from the date of such capital contribution. However, we did not elect to make a withdrawal in 2023, thereby extending the lock-up period and withdrawal elections into subsequent years.

There were no transfers between Level 1, Level 2 or Level 3 during the periods presented.

The fair values of our equity investments in Armata’s common stock and publicly traded investments held by ISP Fund LP are based on the quoted prices in active markets and are classified as Level 1 financial instruments. The fair values of the warrants in Armata classified within Level 2 are based upon observable inputs that may include benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including market research publications.

The Gate Convertible Note, the Armata Convertible Note, the Armata July 2023 Term Loan, the Armata March 2024 Term Loan, the InCarda Convertible Note, the InCarda Warrants, the ImaginAb Convertible Note, private placement positions held by ISP Fund LP, and contingent value rights are classified as Level 3 financial instruments as these securities are not publicly traded and the assumptions used in the valuation model for valuing these securities are based on significant unobservable and observable inputs including those of publicly traded peer companies. There are uncertainties on the fair value measurement of the instruments classified under Level 3 due to the use of unobservable inputs and interrelationships between these unobservable inputs, which could result in higher or lower fair value measurements.

The fair values of our 2025 Notes and 2028 Notes are based on recent trading prices of the respective instruments.