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, 2023

OR

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

For the transition period from ______to _______

Commission File Number: 001-35737

NORTHWEST BIOTHERAPEUTICS, INC.

(Exact name of registrant as specified in its charter)

Delaware	94-3306718
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

4800 Montgomery Lane, Suite 800, Bethesda, MD 20814

(Address of principal executive offices) (Zip Code)

(240) 497-9024

(Registrant’s telephone number)

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 such files). Yes  ☒      No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See 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	☐

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

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.  ☐

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, par value $0.001 per share	NWBO	OTCQB

As of August 7, 2023, the total number of shares of common stock, par value $0.001 per share, outstanding was 1,121,070,972.

NORTHWEST BIOTHERAPEUTICS, INC.

FORM 10-Q

TABLE OF CONTENTS

PART I - FINANCIAL INFORMATION		3
Item 1.	Condensed Consolidated Interim Financial Statements (Unaudited)
	Condensed Consolidated Balance Sheets as of June 30, 2023 and December 31, 2022	3
	Condensed Consolidated Statements of Operations and Comprehensive Loss for the three and six months ended June 30, 2023 and 2022	4
	Condensed Consolidated Statements of Stockholders’ Deficit for the three and six months ended June 30, 2023 and 2022	5
	Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2023 and 2022	7
	Notes to Condensed Consolidated Financial Statements	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	26
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	31
Item 4.	Controls and Procedures	32
PART II - OTHER INFORMATION		33
Item 1.	Legal Proceedings	33
Item 1A.	Risk Factors	33
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	33
Item 3.	Defaults Upon Senior Securities	33
Item 4.	Mine Safety Disclosures	33
Item 5.	Other Information	33
Item 6.	Exhibits	34
SIGNATURES		35

2

PART I - FINANCIAL INFORMATION

NORTHWEST BIOTHERAPEUTICS, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per share amounts)

	June 30,		December 31,
	2023		2022
	(Unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	1,424	$	6,965
Prepaid expenses and other current assets		3,218		2,460
Total current assets		4,642		9,425
Non-current assets:
Property, plant and equipment, net		17,286		13,418
Construction in progress		—		2,028
Right-of-use asset, net		4,231		4,189
Indefinite-lived intangible asset		1,292		1,292
Goodwill		626		626
Other assets		361		345
Total non-current assets		23,796		21,898
TOTAL ASSETS	$	28,438	$	31,323
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS’ DEFICIT
Current liabilities:
Accounts payable and accrued expenses	$	12,107	$	10,687
Accounts payable and accrued expenses to related parties and affiliates		6,551		6,955
Convertible notes, net		1,858		135
Notes payable, net		8,403		15,403
Contingent payable derivative liability		8,706		8,668
Warrant liability		1,083		80,559
Investor advances		609		2,566
Share liability		223		678
Lease liabilities		385		354
Total current liabilities		39,925		126,005
Non-current liabilities:
Notes payable, net of current portion, net		15,743		5,991
Lease liabilities, net of current portion		4,369		4,370
Contingent payment obligation		4,050		—
Total non-current liabilities		24,162		10,361
Total liabilities		64,087		136,366
COMMITMENTS AND CONTINGENCIES (Note 12)
Mezzanine equity:
Series C Convertible Preferred Stock, 10,000,000 shares designated; 1.5 million and 1.4 million shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively; aggregate liquidation preference of $23.7 million		25,385		23,060
Stockholders’ deficit:
Preferred stock ($0.001 par value); 100,000,000 shares authorized as of June 30, 2023 and December 31, 2022, respectively		—		—
Common stock ($0.001 par value); 1,700,000,000 shares authorized; 1,115.2 million and 1,068.4 million shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively		1,115		1,068
Additional paid-in capital		1,258,259		1,164,885
Stock subscription receivable		(79)		(79)
Accumulated deficit		(1,322,222)		(1,297,122)
Accumulated other comprehensive income		1,893		3,145
Total stockholders’ deficit		(61,034)		(128,103)
TOTAL LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS’ DEFICIT	$	28,438	$	31,323

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

3

NORTHWEST BIOTHERAPEUTICS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

(in thousands, except per share amounts)

(Unaudited)

	For the three months ended				For the six months ended
	June 30,				June 30,
	2023		2022		2023		2022
Revenues:
Research and other	$	201	$	477	$	1,081	$	880
Total revenues		201		477		1,081		880
Operating costs and expenses:
Research and development		6,214		13,645		13,075		18,465
General and administrative		7,564		7,931		14,547		15,800
Total operating costs and expenses		13,778		21,576		27,622		34,265
Loss from operations		(13,577)		(21,099)		(26,541)		(33,385)
Other income (expense):
Change in fair value of derivative liabilities		107		(4,254)		3,987		(3,714)
Change in fair value of share liabilities		99		—		47		—
(Loss) gain from extinguishment of debt		(472)		(110)		(1,880)		300
Interest expense		(1,302)		(1,432)		(2,329)		(3,335)
Foreign currency transaction gain (loss)		697		(2,773)		1,616		(3,748)
Total other income (loss)		(871)		(8,569)		1,441		(10,497)
Net loss		(14,448)		(29,668)		(25,100)		(43,882)
Deemed dividend related to warrant modification		(519)		—		(914)		—
Net loss attributable to common stockholders	$	(14,967)	$	(29,668)	$	(26,014)	$	(43,882)
Other comprehensive income (loss)
Foreign currency translation adjustment		(502)		2,375		(1,252)		3,183
Total comprehensive loss	$	(15,469)	$	(27,293)	$	(27,266)	$	(40,699)
Net loss per share applicable to common stockholders
Basic	$	(0.01)	$	(0.01)	$	(0.02)	$	0.21
Diluted	$	(0.01)	$	(0.01)	$	(0.02)	$	(0.06)
Weighted average shares used in computing basic loss per share		1,108,420		1,003,976		1,091,754		981,737
Weighted average shares used in computing diluted loss per share		1,108,420		1,003,976		1,091,754		981,737

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

4

NORTHWEST BIOTHERAPEUTICS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT

(in thousands)

(Unaudited)

	For the Three Months Ended June 30, 2023
	Mezzanine equity												Accumulated
	Series C Convertible						Additional						Other		Total
	Preferred Stock			Common Stock			Paid-in		Subscription		Accumulated		Comprehensive		Stockholders'
	Shares	Amount		Shares	Par value		Capital		Receivable		Deficit		Income		Deficit
Balances at April 1, 2023	1,416	$	23,752	1,083,084	$	1,083	$	1,248,397	$	(79)	$	(1,307,774)	$	2,395	$	(55,978)
Issuance of Series C convertible preferred stock for cash	176		2,371	—		—		—		—		—		—		—
Issuance of Series C convertible preferred stock in lieu of debt redemption	13		207	—		—		—		—		—		—		—
Series C convertible preferred stock conversion	(59)		(945)	1,484		2		943		—		—		—		945
Warrants exercised for cash	—		—	11,553		11		2,510		—		—		—		2,521
Cashless warrants and stock options exercise	—		—	9,169		9		(9)		—		—		—		—
Issuance of common stock for conversion of debt and accrued interest	—		—	6,893		7		3,941		—		—		—		3,948
Stock-based compensation	—		—	3,000		3		187		—		—		—		190
Reclass issued milestone shares from liability to equity	—		—	—		—		2,130		—		—		—		2,130
Net loss	—		—	—		—		—		—		(14,448)		—		(14,448)
Warrants modification	—		—	—		—		679		—		—		—		679
Deemed dividend related to warrants modification	—		—	—		—		(519)		—		—		—		(519)
Cumulative translation adjustment	—		—	—		—		—		—		—		(502)		(502)
Balances at June 30, 2023	1,546	$	25,385	1,115,183	$	1,115	$	1,258,259	$	(79)	$	(1,322,222)	$	1,893	$	(61,034)

	For the Three Months Ended June 30, 2022
										Accumulated
				Additional						Other		Total
	Common Stock			Paid-in		Subscription		Accumulated		Comprehensive		Stockholders'
	Shares	Par value		Capital		Receivable		Deficit		Income		Deficit
Balances at April 1, 2022	969,697	$	970	$	1,083,723	$	(79)	$	(1,206,304)	$	1,165	$	(120,525)
Issuance of common stock for cash	8,584		8		6,317		—		—		—		6,325
Warrants exercised for cash	23,747		24		5,347		—		—		—		5,371
Reclassification of warrant liabilities related to warrants exercised for cash	—		—		11,973		—		—		—		11,973
Cashless warrants and stock options exercise	28,877		29		(29)		—		—		—		—
Reclassification of warrant liabilities related to cashless warrants exercise	—		—		25,375		—		—		—		25,375
Issuance of common stock conversion of debt and accrued interest	2,070		2		1,343		—		—		—		1,345
Stock-based compensation	1,500		1		5,762		—		—		—		5,763
Net loss	—		—		—		—		(29,668)		—		(29,668)
Cumulative translation adjustment	—		—		—		—		—		2,375		2,375
Balances at June 30, 2022	1,034,475	$	1,034	$	1,139,811	$	(79)	$	(1,235,972)	$	3,540	$	(91,666)

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

5

NORTHWEST BIOTHERAPEUTICS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ DEFICIT

(in thousands)

(Unaudited)

	For the Six Months Ended June 30, 2023
	Mezzanine equity												Accumulated
	Series C Convertible						Additional						Other		Total
	Preferred Stock			Common Stock			Paid-in		Subscription		Accumulated		Comprehensive		Stockholders’
	Shares	Amount		Shares	Par value		Capital		Receivable		Deficit		Income		Deficit
Balances at January 1, 2023	1,415	$	23,060	1,068,394	$	1,068	$	1,164,885	$	(79)	$	(1,297,122)	$	3,145	$	(128,103)
Issuance of Series C convertible preferred stock for cash	324		4,756	—		—		—		—		—		—		—
Issuance of Series C convertible preferred stock in lieu of debt redemption	56		1,013	—		—		—		—		—		—		—
Series C convertible preferred stock conversion	(257)		(3,562)	6,430		7		3,555		—		—		—		3,562
Warrants exercised for cash	—		—	12,320		12		2,757		—		—		—		2,769
Cashless warrants and stock options exercise	—		—	9,879		10		(10)		—		—		—		—
Reclassification of warrant liabilities to stockholders’ deficit	—		—	—		—		76,258		—		—		—		76,258
Issuance of common stock for conversion of debt and accrued interest	—		—	15,160		15		9,549		—		—		—		9,564
Stock-based compensation	8		118	3,000		3		1,105		—		—		—		1,108
Net loss	—		—	—		—		—		—		(25,100)		—		(25,100)
Warrants modification	—		—	—		—		1,074		—		—		—		1,074
Deemed dividend related to warrants modification	—		—	—		—		(914)		—		—		—		(914)
Cumulative translation adjustment	—		—	—		—		—		—		—		(1,252)		(1,252)
Balances at June 30, 2023	1,546	$	25,385	1,115,183	$	1,115	$	1,258,259	$	(79)	$	(1,322,222)	$	1,893	$	(61,034)

	For the Six Months Ended June 30, 2022
										Accumulated
				Additional						Other		Total
	Common Stock			Paid-in		Subscription		Accumulated		Comprehensive		Stockholders’
	Shares	Par value		Capital		Receivable		Deficit		Income		Deficit
Balances at January 1, 2022	948,445	$	948	$	1,066,873	$	(79)	$	(1,192,090)	$	357	$	(123,991)
Issuance of common stock for cash	13,137		13		9,676		—		—		—		9,689
Warrants exercised for cash	39,003		39		9,517		—		—		—		9,556
Reclassification of warrant liabilities related to warrants exercised for cash	—		—		19,688		—		—		—		19,688
Cashless warrants and stock options exercise	28,903		29		(29)		—		—		—		—
Reclassification of warrant liabilities related to cashless warrants exercise	—		—		25,379		—		—		—		25,379
Issuance of common stock conversion of debt and accrued interest	3,482		4		2,328		—		—		—		2,332
Stock-based compensation	1,505		1		6,379		—		—		—		6,380
Net loss	—		—		—		—		(43,882)		—		(43,882)
Cumulative translation adjustment	—		—		—		—		—		3,183		3,183
Balances at June 30, 2022	1,034,475	$	1,034	$	1,139,811	$	(79)	$	(1,235,972)	$	3,540	$	(91,666)

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

6

NORTHWEST BIOTHERAPEUTICS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(Unaudited)

	For the six months ended
	June 30,
	2023		2022
Cash Flows from Operating Activities:
Net loss	$	(25,100)	$	(43,882)
Reconciliation of net loss to net cash used in operating activities:
Depreciation and amortization		685		624
Amortization of debt discount		1,276		1,509
Change in fair value of derivatives		(3,987)		3,714
Change in fair value of share liability		(47)		—
Loss (gain) from extinguishment of debt		1,880		(300)
Amortization of operating lease right-of-use asset		138		121
Stock-based compensation for services		1,211		6,380
Subtotal of non-cash charges		1,156		12,048
Changes in operating assets and liabilities:
Prepaid expenses and other current assets		(681)		(286)
Other non-current assets		(14)		660
Accounts payable and accrued expenses		2,206		1,533
Related party accounts payable and accrued expenses		(404)		2,056
Lease liabilities		77		63
Net cash used in operating activities		(22,760)		(27,808)
Cash Flows from Investing Activities:
Purchase of equipment and construction in progress		(2,582)		(466)
Net cash used in investing activities		(2,582)		(466)
Cash Flows from Financing Activities:
Proceeds from issuance of Series C convertible preferred stock		4,756		—
Proceeds from issuance of common stock		—		9,465
Proceeds from exercise of warrants		1,566		9,556
Proceeds from investor advance		7		—
Proceeds from issuance of notes payable, net		10,000		600
Proceeds from issuance of convertible notes payable, net		1,149		—
Proceeds from contingent payment obligation		4,050		—
Repayment of notes payable		(208)		(5,290)
Repayment of investor advances		(100)		—
Net cash provided by financing activities		21,220		14,331
Effect of exchange rate changes on cash and cash equivalents		(1,419)		3,605
Net decrease in cash and cash equivalents		(5,541)		(10,338)
Cash and cash equivalents, beginning of the period		6,965		15,169
Cash and cash equivalents, end of the period	$	1,424	$	4,831
Supplemental disclosure of cash flow information
Interest payments on notes payable	$	(30)	$	(876)

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements

7

NORTHWEST BIOTHERAPEUTICS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(Unaudited)

	For the six months ended
	June 30,
	2023		2022
Supplemental schedule of non-cash investing and financing activities:
Cashless warrants and stock options exercise	$	10	$	29
Reclassification of warrant liabilities related to warrants exercised for cash	$	—	$	19,688
Reclassification of warrant liabilities to stockholders’ deficit	$	76,258	$	—
Reclassification of warrant liabilities related to cashless warrants exercise	$	—	$	25,379
Reclassification of investor advances to convertible notes payable	$	661	$	—
Reclassification of investor advances to stockholders' deficit	$	1,203	$	—
Issuance of common stock for conversion of debt and accrued interest	$	9,564	$	2,229
Issuance of Series C convertible preferred stock in lieu of debt redemption	$	1,013	$	—
Series C convertible preferred stock conversion	$	3,562	$	—
Capital expenditures included in accounts payable	$	266	$	49
Reclassification between shares payable and equity	$	—	$	250
Deemed dividend related to warrant modification	$	914	$	—

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

8

NORTHWEST BIOTHERAPEUTICS, INC.

NOTES TO CONDENSED CONSOLIDATED STATEMENTS

1. Organization and Description of Business

Northwest Biotherapeutics, Inc. and its wholly owned subsidiaries Flaskworks, Northwest Biotherapeutics Limited (formerly known as Aracaris Ltd), Aracaris Capital, Ltd, Northwest Biotherapeutics B.V., and NW Bio GmbH (collectively, the “Company”, “we”, “us” and “our”) were organized to discover and develop innovative immunotherapies for cancer. The Company has developed DCVax® platform technologies for both operable and inoperable solid tumor cancers. The Company has wholly owned subsidiaries in Boston, the U.K., the Netherlands and Germany. On August 28, 2020, the Company acquired Flaskworks, LLC (“Flaskworks”), a company that has developed a system designed to close and automate the manufacturing of cell therapy products such as DCVax®. On July 24, 2023, the Company’s wholly-owned subsidiary changed its name from Aracaris Ltd to Northwest Biotherapeutics Limited.

The Company relies upon contract manufacturers for production of its DCVax products, research and development services, distribution and logistics, and related services, in compliance with the Company’s specifications and the applicable regulatory requirements.

The Company has completed a Phase 3 clinical trial of its DCVax®-L product for glioblastoma brain cancer, has publicly reported the results in a peer reviewed publication in a medical journal as well as at a medical conference, and is working on prerequisites and preparations for filing an application for regulatory approval of the product.

2. Financial Condition, Going Concern and Management Plans

The Company has incurred annual net operating losses since its inception. The Company had a net loss of $25.1 million for the six months ended June 30, 2023. The Company used approximately $22.8 million of cash in its operating activities during the six months ended June 30, 2023.

The Company does not expect to generate material revenue in the near future from the sale of products and is subject to all of the risks and uncertainties that are typically faced by biotechnology companies that devote substantially all of their efforts to research and development (“R&D”) and clinical trials and do not yet have commercial products. The Company expects to continue incurring annual losses for the foreseeable future. The Company’s existing liquidity is not sufficient to fund its operations, anticipated capital expenditures, working capital and other financing requirements until the Company reaches significant revenues. Until that time, the Company will need to obtain additional equity and/or debt financing, especially if the Company experiences downturns in its business that are more severe or longer than anticipated, or if the Company experiences significant increases in expense levels resulting from being a publicly-traded company or from expansion of operations. If the Company attempts to obtain additional equity or debt financing, the Company cannot assume that such financing will be available to the Company on favorable terms, or at all.

Because of recurring operating losses and operating cash flow deficits, there is substantial doubt about the Company’s ability to continue as a going concern for at least one year from the date of this filing. The consolidated financial statements have been prepared assuming that the Company will continue as a going concern, however, they do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets, or the amounts and classification of liabilities that may result from the outcome of this uncertainty.

3. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated interim financial statements include the accounts of the Company and its subsidiaries. All intercompany balances and transactions have been eliminated. Certain immaterial reclassifications have been made to prior period amounts to conform to the current period presentation.

9

NORTHWEST BIOTHERAPEUTICS, INC.

NOTES TO CONDENSED CONSOLIDATED STATEMENTS

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with the accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Article 8 of Regulation S-X of the Securities and Exchange Commission (“SEC”) and on the same basis as the Company uses to prepare its annual audited consolidated financial statements. The condensed consolidated balance sheet as of June 30, 2023, condensed consolidated statements of operations and comprehensive loss for the three and six months ended June 30, 2023 and 2022, condensed consolidated statement of stockholders’ deficit for the three and six months ended June 30, 2023 and 2022, and the condensed consolidated statements of cash flows for the six months ended June 30, 2023 and 2022 are unaudited, but include all adjustments, consisting only of normal recurring adjustments, which the Company considers necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The results for the three and six months ended June 30, 2023 are not necessarily indicative of results to be expected for the year ending December 31, 2023 or for any future interim period. The condensed consolidated balance sheet at December 31, 2022 has been derived from audited financial statements; however, it does not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2022 and notes thereto included in the Company’s annual report on Form 10-K (the “2022 Annual Report”), which was filed with the SEC on February 28, 2023.

Use of Estimates

In preparing condensed consolidated financial statements in conformity with U.S. GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of expenses during the reporting period. Due to inherent uncertainty involved in making estimates, actual results reported in future periods may be affected by changes in these estimates.

On an ongoing basis, the Company evaluates its estimates and judgments, including valuing equity securities in share-based payment arrangements, estimating the fair value of financial instruments recorded as derivative liabilities, useful lives of depreciable assets, and whether impairment charges may apply. The Company bases its estimates on historical experience and on various other assumptions that it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the reported amounts of revenues and expenses that are not readily apparent from other sources. Actual results could differ from those estimates, particularly given the significant social and economic disruptions and uncertainties associated with the ongoing coronavirus pandemic (“COVID-19”) and the COVID-19 control responses.

Significant Accounting Policies

There have been no material changes in the Company’s significant accounting policies from those previously disclosed in the 2022 Annual Report other than those discussed below.

Sequencing

The Company adopted a sequencing policy under ASC 815-40-35 to determine if reclassification of contracts from equity to liabilities is necessary pursuant to ASC 815 due to the Company’s inability to demonstrate it has sufficient authorized shares. Certain contracts were classified as liabilities as the result of the instruments containing a potentially indeterminable number of shares and, most recently, due to the Company entering into agreements providing for the potential issuance of more shares than authorized. While temporary suspensions are in place to keep the potential exercises beneath the number authorized, certain instruments are classified as liabilities, after allocating available authorized shares on the basis of the earliest grant date of potentially dilutive instruments. Pursuant to ASC 815, issuance of stock-based awards to the Company’s employees, nonemployees or directors are not subject to the sequencing policy.

On January 9, 2023, the Company filed a Certificate of Amendment of its Seventh Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of the State of Delaware, which effected an increase in the Company’s authorized shares of common stock, from 1.2 billion to 1.7 billion, par value $0.001 per share. As a result of this increase in authorized shares, the liability-classified warrants were reclassified to equity. Approximately 141 million warrants, with a value of approximately $76.3 million, to purchase shares of the Company’s common stock were reclassified from liabilities to equity on January 9, 2023. The remaining balance of $1.1 million in warrant liability as of June 30, 2023 was related to certain conditional rights to independently purchase shares from the Company in a future raise of capital (the “Piggy-back Rights”).

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Modification of Equity Classified Warrants

A change in the terms or conditions of a warrant is accounted for as a modification. For a warrant modification accounted for under ASC 815, the effect of a modification shall be measured as the difference between the fair value of the modified warrant and the fair value of the original warrant immediately before its terms are modified, with each measured on the modification date. The accounting for incremental fair value of the modified warrants over the original warrants is based on the specific facts and circumstances related to the modification. When a modification is directly attributable to an equity offering, the incremental change in fair value of the warrants is accounted for as an equity issuance cost. When a modification is directly attributable to a debt offering, the incremental change in fair value of the warrants is accounted for as a debt discount or debt issuance cost. For all other modifications, the incremental change in fair value is recognized as a deemed dividend.

Recently Issued Accounting Standards Not Yet Adopted

Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions

In June 2022, the FASB issued ASU 2022-03, ASC Subtopic 820 “Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions”. The FASB is issuing this Update (1) to clarify the guidance in Topic 820, Fair Value Measurement, when measuring the fair value of an equity security subject to contractual restrictions that prohibit the sale of an equity security, (2) to amend a related illustrative example, and (3) to introduce new disclosure requirements for equity securities subject to contractual sale restrictions that are measured at fair value in accordance with Topic 820.

For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance.

The Company is still evaluating the impact of this pronouncement on the consolidated financial statements.

4. Fair Value Measurements

In accordance with ASC 820 (Fair Value Measurements and Disclosures), the Company uses various inputs to measure the fair value of liabilities related to certain outstanding warrants, certain embedded conversion features associated with convertible debt and the contingent payable to Cognate BioServices on a recurring basis to determine the fair value of these liabilities. ASC 820 establishes a hierarchy categorizing inputs into three levels used to measure and disclose fair value. The hierarchy gives the highest priority to quoted prices available in active markets and the lowest priority to unobservable inputs. An explanation of each level in the hierarchy is described below:

Level 1 - Unadjusted quoted prices in active markets for identical instruments that are accessible by the Company on the measurement date.

Level 2 - Quoted prices in markets that are not active or inputs which are either directly or indirectly observable.

Level 3 - Unobservable inputs for the instrument requiring the development of assumptions by the Company.

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The following table classifies the Company’s liabilities measured at fair value on a recurring basis into the fair value hierarchy as of June 30, 2023 and December 31, 2022 (in thousands):

	Fair value measured at June 30, 2023
			Quoted prices in active		Significant other		Significant
	Fair value at		markets		observable inputs		unobservable inputs
	June 30, 2023		(Level 1)		(Level 2)		(Level 3)
Warrant liability	$	1,083	$	—	$	—	$	1,083
Contingent payable derivative liability		8,706		—		—		8,706
Share liability		223		—		—		223
Total fair value	$	10,012	$	—	$	—	$	10,012

	Fair value measured at December 31, 2022
			Quoted prices in active		Significant other		Significant
	Fair value at		markets		observable inputs		unobservable inputs
	December 31, 2022		(Level 1)		(Level 2)		(Level 3)
Warrant liability	$	80,559	$	—	$	—	$	80,559
Embedded redemption option		807		—		—		807
Contingent payable derivative liability		8,668		—		—		8,668
Share liability		678		—		—		678
Total fair value	$	90,712	$	—	$	—	$	90,712

There were no transfers between Level 1, 2 or 3 during the six-month period ended June 30, 2023.

The following table presents changes in Level 3 liabilities measured at fair value for the six-month period ended June 30, 2023. Both observable and unobservable inputs were used to determine the fair value of positions that the Company has classified within the Level 3 category. Unrealized gains and losses associated with liabilities within the Level 3 category include changes in fair value that were attributable to both observable (e.g., changes in market interest rates) and unobservable (e.g., changes in unobservable long- dated volatilities) inputs (in thousands).

	Warrant			Embedded		Contingent Payable		Share
	Liability			Redemption Option		Derivative Liability		Liability		Total
Balance - January 1, 2023	$	80,559		$	807	$	8,668	$	678	$	90,712
Additional share liability		—			—		—		663		663
Redemption of share liability		—			—		—		(1,071)		(1,071)
Reclassification of warrant liabilities		(76,258)			—		—		—		(76,258)
Change in fair value		(3,218)			(807)		38		(47)		(4,034)
Balance - June 30, 2023	$	1,083	(1)	$	—	$	8,706	$	223	$	10,012

(1) The remaining balance of $1.1 million in warrant liability as of June 30, 2023 was related to certain conditional rights to independently purchase shares from the Company in a future raise of capital (the “Piggy-back Rights”). The Company accounted for the Piggy-back Rights as a freestanding financial instrument, which was classified as a liability at fair value on the Condensed Consolidated Balance Sheet

On January 9, 2023, the Company reclassified the fair value of the warrant liability of $76.3 million into the additional paid-in capital. The change in fair value of the common stock warrant liability of $2.3 million between December 31, 2022 and January 9, 2023 is reflected in “Change in fair value of derivative liabilities” in the accompanying condensed consolidated statements of comprehensive loss for the six months ended June 30, 2023.

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A summary of the weighted average (in aggregate) significant unobservable inputs (Level 3 inputs) used in measuring the Company’s warrant liabilities and embedded conversion feature that are categorized within Level 3 of the fair value hierarchy as of June 30, 2023, January 9, 2023 (the reclassification date) and December 31, 2022 is as follows:

	As of June 30, 2023						As of January 9, 2023
	Share			Contingent Payable			Warrant
	Liability			Derivative Liability			Liability
Strike price	$	0.60		$	0.57	*	$	0.31
Contractual term (years)		0.07			1.24			1.46
Volatility (annual)		60	%		61	%		87	%
Risk-free rate		4.3	%		5.5	%		4.3	%
Dividend yield (per share)		0	%		0	%		0	%

	As of December 31, 2022
	Warrant			Share			Contingent Payable
	Liability			Liability			Derivative Liability
Strike price	$	0.31		$	0.78	*	$	0.78	*
Contractual term (years)		1.5			0.1			0.6
Volatility (annual)		86	%		76	%		77	%
Risk-free rate		4.3	%		2.0	%		4.8	%
Dividend yield (per share)		0	%		0	%		0	%

* The strike price assumes the current stock price as of June 30, 2023 and December 31, 2022

The key unobservable inputs for Piggy-back rights that was included in the warrant liability as of June 30, 2023 and December 31, 2022 was the assumption of the estimated remaining life which was based on the estimate of the next qualified financing.

5. Stock-based Compensation

The following table summarizes total stock-based compensation expense for the three and six months ended June 30, 2023 and 2022 (in thousands).

	For the three months ended				For the six months ended
	June 30,				June 30,
	2023		2022		2023		2022
Research and development	$	147	$	641	$	444	$	1,151
Research and development - related party
Milestones achieved (1)		—		1,410		520		1,410
Future milestones (2)		40		3,930		140		3,930
General and administrative		90		(218)		107		(111)
Total stock-based compensation expense	$	277	$	5,763	$	1,211	$	6,380

The related party amounts were for milestone incentives that either were earned or are deemed probable to be achieved in the future and become issuable at that time (as detailed below in Restricted Stock Awards).

(1) During the six months ended June 30, 2023, the Company recognized the remaining $0.5 million stock-based compensation related to the achieved milestone (obtaining a commercial manufacturing license from the MHRA). The Company had previously recognized $1.6 million stock-based compensation as of December 31, 2022.

The $1.4 million expense recognized in 2022 covers 2 one-time milestones: 2 required licenses for the Sawston facility (licenses from the Human Tissue Authority and from the MHRA for manufacturing for clinical trials and compassionate use cases).

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(2) During the three and six months ended June 30, 2023, the Company recognized and expensed (but did not issue shares for) the pro-rata portion of the remaining one-time milestone stock awards for drafting key portions of the application for product approval of $40,000 and $140,000, respectively.

During the three and six months ended June 30, 2022, the Company recognized and expensed (but did not issue shares for) the pro-rata portion of 6 one-time milestones: 5 workstreams (Comparability, Stability, Potency, Product Profile and Fill/Finish) and one-time milestone for drafting key portions of the application for product approval of $3.9 million and $3.9 million, respectively.

The total unrecognized stock compensation cost was approximately $0.5 million as of June 30, 2023 and will be recognized over the next 1.5 years.

Stock Options

The following table summarizes stock option activity for the Company’s option plans during the six months ended June 30, 2023 (amount in thousands, except per share number):

				Weighted Average
		Weighted		Remaining
	Number of	Average		Contractual Life	Total Intrinsic
	Shares	Exercise Price		(in years)	Value
Outstanding as of January 1, 2023	301,263	$	0.34	7.0	$	135,225
Cashless exercised	(1,827)		0.41	—		—
Outstanding as of June 30, 2023	299,436	$	0.33	6.5	$	73,083
Options vested (1)	281,278	$	0.33	6.5	$	69,223

(1) An aggregate 153 million stock options held by Ms. Linda Powers, the Company’s Chief Executive Officer, and Mr. Leslie Goldman, the Company’s Senior Vice President, are subject to an agreement (the “Blocker Letter Agreement”) under which they cannot exercise any options or warrants except upon at least 61 days’ prior notice.

Restricted Stock Awards

During April 2022, the Company’s Board approved, and the Company entered into a Statement of Work #6 (the “SOW 6”) with Advent BioServices, a related party of the Company, for five workstreams that are prerequisites for an application for regulatory approval of DCVax-L, for three required licenses for the Sawston facility , and for drafting of key portions of the application for approval. The SOW provides for baseline costs and for milestone incentives for successful completion of each of the workstreams, for the completion and submission of each application for product approval, and for obtaining regulatory approval of each of the three Sawston licenses. The milestone incentives will be a combination of cash and stock and are not paid until they are achieved. On September 26, 2022, the Company amended the SOW6 (the “Amended SOW6”) to (1) extend the service period through September 30, 2023, and (2) clarify the assessment and application of the milestones, and (3) add a sixth workstream. (The potential cost for all unearned stock awards for milestones not yet achieved was re-measured on the modification date and will be further re-measured until the date the milestone award is achieved and the stock awards are earned.) If all of the 10 one-time milestones are achieved (i.e., for all six workstreams that are prerequisites for an application for product approval, for obtaining all three licenses required for the Sawston facility, and for the completion of key portions of the application for product approval), the aggregate stock-based compensation under the Amended SOW 6 will be 13.5 million shares (including the shares already earned and issued for the milestones already achieved) for an aggregate fair value of $10.1 million.

As of December 31, 2022, seven milestones were completed, including five of the workstreams, and the regulatory approvals of two licenses required for the Sawston facility. An eighth milestone was partly completed and the stock component of that milestone was earned, but the cash portion of that eighth milestone was not yet earned.

During the six months ended June 30, 2023, the eighth milestone workstream for Mechanism of Action and the milestone for obtaining the commercial manufacturing license from the MHRA were completed. For this manufacturing license milestone, the Company

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NOTES TO CONDENSED CONSOLIDATED STATEMENTS

recognized the remaining $0.5 million in expense in the condensed consolidated statements of operations and comprehensive loss and issued 3.0 million common shares.

For the remaining one-time milestone that is anticipated to be achieved and earned in the future, the Company recognized and expensed (but did not issue) the pro-rata portion of the remaining potential milestone stock awards during the three and six months ended June 30, 2023, of $40,000 and $0.1 million, respectively.

Other Service Agreement

On March 16, 2023, the Company issued 8,000 shares of Series C convertible preferred stock to an unrelated vendor who provided professional services for the Company. The fair value of the Series C convertible preferred stock on the issuance date was approximately $0.1 million, which will be expensed over a four-month service period. During the three and six months ended June 30, 2023, the Company recognized approximately $89,000 and $0.1 million, respectively as part of general and administrative expenses.

6. Property, Plant and Equipment

Property, plant and equipment consist of the following at June 30, 2023 and December 31, 2022 (in thousands):

	June 30,		December 31,		Estimated
	2023		2022		Useful Life
Leasehold improvements	$	17,250	$	13,070	Lesser of lease term or estimated useful life
Office furniture and equipment		455		300	3-5 years
Computer and manufacturing equipment and software		2,495		2,238	3-5 years
Land in the United Kingdom		86		82	NA
		20,286		15,690	NA
Less: accumulated depreciation		(3,000)		(2,272)
Total property, plant and equipment, net	$	17,286	$	13,418
Construction in progress	$	—	$	2,028

The construction works related to expanding the operational portion of its UK facility (Phase 1B) were completed and placed in service as of June 30, 2023. All costs associated with the Phase 1B build out were reclassified from construction in progress to leasehold improvements effective June 2023 and are being amortized over the estimated useful life of the facility.

Depreciation expense was approximately $0.7 million and $0.6 million for the six months ended June 30, 2023, and 2022, respectively.

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NOTES TO CONDENSED CONSOLIDATED STATEMENTS

7. Outstanding Debt

The following two tables summarize outstanding debt as of June 30, 2023 and December 31, 2022, respectively (amount in thousands):

		Stated
		Interest			Conversion					Remaining		Carrying
	Maturity Date	Rate			Price			Face Value		Debt Discount		Value
Short term convertible notes payable
6% unsecured	Due		6	%	$	3.09		$	135	$	—	$	135
8% unsecured	1/31/2024		8	%		0.55	*		900		(177)		723
8% unsecured	6/30/2024		8	%		0.50	*		1,000		—		1,000
									2,035		(177)		1,858
Short term notes payable
8% unsecured	Various		8	%		N/A			8,253		(413)		7,840
12% unsecured	On Demand		12	%		N/A			562		—		562
									8,815		(413)		8,402
Long term notes payable
8% unsecured	7/26/2024		8	%		N/A			16,117		(1,121)		14,996
6% secured	3/25/2025		6	%		N/A			748		—		748
									16,865		(1,121)		15,744
Ending balance as of June 30, 2023								$	27,715	$	(1,711)	$	26,004

*The 8% convertible notes are convertible into Series C preferred shares at $12.50 - $13.75 per share. Each Series C preferred share is convertible into common shares with 30 days’ restriction period. The conversion price in common share equivalent is at $0.50 and $0.55 per share.

		Stated									Embedded
		Interest			Conversion				Remaining		Redemption		Carrying
	Maturity Date	Rate			Price		Face Value		Debt Discount		Option		Value
Short term convertible notes payable
6% unsecured	Due		6	%	$	3.09	$	135	$	—	$	—	$	135
								135		—		—		135
Short term notes payable
8% unsecured	Various		8	%		N/A		14,540		(1,300)		807		14,047
9% unsecured	Various		9	%		N/A		793		—		—		793
12% unsecured	On Demand		12	%		N/A		563		—		—		563
								15,896		(1,300)		807		15,403
Long term notes payable
8% unsecured	7/26/2024		8	%		N/A		5,505		(432)		—		5,073
6% secured	3/25/2025		6	%		N/A		918		—		—		918
								6,423		(432)		—		5,991
Ending balance as of December 31, 2022							$	22,454	$	(1,732)	$	807	$	21,529

On March 2, 2023, the Company entered into a Commercial Loan Agreement (the “Commercial Loan”) with a commercial lender for an aggregate principal amount of $11.0 million. The Commercial Loan bears interest at 8% per annum with a 22-month term. There are no principal repayments during the first eight months of the term. The Commercial Loan is amortized in 14 installments starting on November 2, 2023. The Commercial Loan carries an original issue discount of $1.0 million.

In April 2023, the Company entered into several ten-month convertible notes (the “April Convertible Notes”) with multiple investors (the “Holders”) with an aggregate principal amount of $0.9 million for a purchase price of $0.8 million. The April Convertible Notes bear interest at 8% per annum, and are convertible into Series C preferred shares at $13.75 per share at the Holders’ sole option. The Series C preferred shares are convertible into common stock 30 days after the debt conversion date. Each Series C preferred share is convertible into 25 shares of common stock. The Company reclassed $0.7 million Investor advances that was received from the Holders in December 2022 to Convertible notes payable on the condensed consolidated balance sheet as of June 30, 2023. As a result, the Company received net cash proceeds of $0.1 million.

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As consideration for entering into the convertible note agreements, the Company also agreed to amend the investors’ existing outstanding warrants. The exercise price of certain warrants was amended from $2.00 per share to $0.55 per share, and the maturity date was extended for additional 9 months. The incremental change in fair value resulting from the amendment was approximately $0.2 million, which was recognized as an additional debt discount to the April Convertible Notes.

On June 30, 2023, the Company entered into a one-year convertible note (the “June Convertible Note”) with an individual investor (the “Holder”) with an aggregate principal amount of $1.0 million. The Company received $1.0 million cash from the June Convertible Note. The June Convertible Note bears interest at 8% per annum, and is convertible into Series C preferred shares at $12.50 per share at the Holder's sole option. The Series C preferred shares are convertible into common stock 30 days after the debt conversion date. Each Series C preferred share is convertible into 25 shares of common stock.

During the six months ended June 30, 2023, the Company issued approximately 15.2 million shares of common stock with a fair value of $9.6 million to certain lenders in lieu of cash payments of $7.4 million of debt, including $0.7 million of accrued interest. In addition, pursuant to exchange agreements executed with various holders, the Company is required to potentially issue additional common stock (the “Share liability”) if the stock price is less than the price defined in the exchange agreement as of the true-up date. During the six months ended June 30, 2023, the Company extinguished Share liabilities of $1.1 million and recognized an additional $0.7 million in Share liabilities. The Company recognized an approximately $1.8 million debt extinguishment loss during the six months ended June 30, 2023 from the debt redemption.

During the six months ended June 30, 2023, the Company recognized $0.8 million change in fair value of embedded redemption option as this embedded feature had de minimis value based on the remaining life of the note and the next qualified financing.

During the six months ended June 30, 2023, the Company issued approximately 56,000 shares of Series C preferred stock with a fair value of $1.0 million to certain lenders in lieu of cash payments of $0.9 million in debt, including $0.1 million of accrued interest. The Company recognized an approximately $0.1 million debt extinguishment loss.

For the three months ended June 30, 2023 and 2022, interest expense related to outstanding debt totaled approximately $1.3 million and $1.4 million including amortization of debt discounts totaling $0.7 million and $0.7 million, respectively.

For the six months ended June 30, 2023 and 2022, interest expense related to outstanding debt totaled approximately $2.3 million and $3.3 million including amortization of debt discounts totaling $1.3 million and $1.5 million, respectively.

8. Net Loss per Share Applicable to Common Stockholders

Basic loss per common share is computed by dividing net loss by the weighted average number of common shares outstanding during the reporting period. Diluted loss per common share would be computed similar to basic loss per common share except that it reflects the potential dilution that could occur if dilutive securities or other obligations to issue common stock were exercised or converted into common stock. Because of the net loss from operations for each period, inclusion of such securities in the computation of loss per share would be anti-dilutive and thus they are excluded. Potentially dilutive weighted average common shares include common stock potentially issuable under the Company’s convertible notes and preferred stock, warrants and vested and unvested stock options.

The following securities were not included in the diluted net loss per share calculation because their effect was anti-dilutive as of the periods presented (in thousands):

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NOTES TO CONDENSED CONSOLIDATED STATEMENTS

	For the six months ended
	June 30,
	2023	2022
Series C convertible preferred stock	38,638	—
Common stock options	299,436	309,512
Common stock warrants	117,863	153,110
Convertible notes and accrued interest	3,748	76
Potentially dilutive securities	459,685	462,698

9. Related Party Transactions

The Company had three operational programs with Advent: (a) an ongoing manufacturing program at the GMP facility in London, (b) an ongoing development and manufacturing program at the Sawston GMP facility, and (c) a one-time program for specialized work, organized into 10 sets of one-time milestones, for the following:

● Qualifying for and obtaining 3 required licenses for the Sawston facility: a license from the Human Tissue Authority to collect and process human cells and tissues, a license from the MHRA for manufacturing for clinical trials and compassionate use cases, and a license from the MHRA for commercial manufacturing.

● 6 workstreams relating to product matters required for an application for regulatory approval of DCVax-L, including Comparability, Stability, Potency, Product Profile, Mechanism of Action and Fill/Finish.

● Drafting of key portions of the application for product approval itself.

Each of the three operational programs is covered by a separate contract. The ongoing manufacturing in the London facility is covered by a Manufacturing Services Agreement (“MSA”) entered into on May 14, 2018. The development and manufacturing program at the Sawston facility is covered by an Ancillary Services Agreement entered into on November 18, 2019. The specialized work associated with the 10 one-time milestones is covered by an SOW 6 entered into under the Ancillary Services Agreement as of April 1, 2022 and amended on September 26, 2022.

The Ancillary Services Agreement establishes a structure under which the Company and Advent negotiate and agree upon the scope and terms for Statements of Work (“SOWs”) for facility development activities and compassionate use program activities. After an SOW is agreed and approved by the Company, Advent will proceed with, or continue, the applicable services and will invoice the Company pursuant to the SOW. Since both the facility development and the compassionate use program involve pioneering and uncertainties in most aspects, the invoicing under the Ancillary Services Agreement is on the basis of costs incurred plus fifteen percent. The SOWs may involve ongoing activities or specialized one-time projects and related one-time milestone payments. The current Ancillary Services Agreement ended in September 2023. The Company subsequently extended the term by 12 months to July 2024 with no other changes.

SOW 6 provides for ongoing baseline costs for manufacturing at the Sawston facility and one-time milestone incentives for (a) regulatory approval of each of the 3 licenses required for the Sawston facility, (b) successful completion of each of the 6 workstreams and (c) completion of drafting key portions of an application for product approval. The milestone incentives are a combination of cash and stock, and are not paid until the milestone is achieved and earned.

During the six months ended June 30, 2023, the Company paid an aggregate of $2.0 million in cash, of which $1.0 million was related to two milestones that were completed and fully expensed but unpaid as of December 31, 2022, and the other $1.0 million was partial payment for one milestone (obtaining a commercial manufacturing license from the MHRA) that was completed as of March 20, 2023. The Company issued 3.0 million common shares as a result of completion of the one-time milestone (obtaining a commercial manufacturing license from the MHRA) at fair value of $2.1 million, of which $0.5 million was recognized during the six months ended June 30, 2023 and $1.6 million had already been recognized (but not paid) in 2022. During the six months ended June 30, 2023, the Company also expensed (but did not pay) an aggregate of $0.5 million related to completed cash milestone payments; the Company also expensed (but did not pay) an aggregate of $0.2 million related to future cash milestone payments that the Company anticipates will be

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achieved and earned, and $0.1 million related to fair value of future shares milestone payments that the Company anticipates will be achieved and earned over the course of the contract period.

The following table summarizes total research and development costs from Advent for the three and six months ended June 30, 2023 and 2022, respectively (in thousands).

	For the three months ended				For the six months ended
	June 30,				June 30,
	2023		2022		2023		2022
Advent BioServices
Manufacturing cost in London	$	1,660	$	1,424	$	3,303	$	2,827
Manufacturing cost at Sawston facility		2,098		1,276		3,810		2,701
SOW 6 one-time milestones - Shares
Expensed and paid (milestone complete) (1)		—		1,410		520		1,410
Expensed but unpaid, not yet due (milestone not yet complete) (2)(3)		40		3,930		140		3,930
SOW 6 one-time milestones - Cash
Expensed and paid (milestone complete) (4)		—		500		—		500
Expensed and due, but unpaid (milestone complete) (5)		—		1,000		550		1,000
Expensed but unpaid, not yet due (milestone not yet complete) (6)		60		2,314		210		2,314
Total	$	3,858	$	11,854	$	8,533	$	14,682

(1) The payment for the six months ended June 30, 2023 covers the one-time milestone for obtaining a commercial manufacturing license from the MHRA. The payment for the six months ended June 30, 2022 also covers 2 other one-time milestones: 2 required licenses for the Sawston facility (licenses from the Human Tissue Authority and from the MHRA for manufacturing for clinical trials and compassionate use cases).

(2) The expense for the six months ended June 30, 2023 covers the one-time milestone for drafting key portions of the application for product approval.

(3) The expense for the six months ended June 30, 2022 covers 6 one-time milestones: 5 workstreams (Comparability, Stability, Potency, Product Profile and Fill/Finish) and 1 one-time milestone for drafting key portions of the application for product approval.

(4) This covers one-time milestone: a required license for the Sawston facility from the Human Tissue Authority.

(5) The expense for the six months ended June 30, 2023 covers the one-time milestone workstream: Mechanism of Action. The expense for the six months ended June 30, 2022 covers one-time milestone: a required license for the Sawston facility from the MHRA for manufacturing for clinical trials and compassionate use cases.

(6) The expense for the six months ended June 30, 2023 covers the one-time milestone for drafting key portions of the application for product approval. The expense for the six months ended June 30, 2022 covers 6 one-time milestones: 5 workstreams (Comparability, Stability, Potency, Product Profile and Fill/Finish) and one-time milestone for drafting key portions of the application for product approval.

Advent BioServices Sublease Agreement

On December 31, 2021, the Company entered into a Sub-lease Agreement (the “Agreement”) with Advent. The Agreement permits use by Advent of a portion of the space in the Sawston facility, which is leased by the Company under a separate head lease with a different counterparty (Huawei) that commenced on December 14, 2018. The Company subleased approximately 14,459 square feet of the 88,000 square foot building interior space, plus corresponding exterior support space and parking. The lease payments amount under the Agreement are two times the amount payable by the Company under the head lease (which is currently  £5.75 or approximately $7.28 per square foot based on exchange rate as of June 30, 2023), but subject to a cap of $10 per square foot. Accordingly, the monthly lease payments under the Sublease are based on $145,000 annually for 2023. The total lease payments paid by the Company to Huawei for the 88,000 square foot facility, exterior spaces and parking under the head lease are £500,000 (approximately $633,000) per year. The term of the Agreement shall end on the same date as the head lease term ends.

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NORTHWEST BIOTHERAPEUTICS, INC.

NOTES TO CONDENSED CONSOLIDATED STATEMENTS

During the three and six months ended June 30, 2023, the Company recognized sub-lease income of $36,000 and $72,000, respectively.

Related Party Accounts Payable

As of June 30, 2023, there was approximately $0.2 million of unpaid board compensation to one of our Directors that was included in the accounts payable to related party on the condensed consolidated balance sheets.

As of June 30, 2023, there were outstanding unpaid accounts payable and accrued expenses owed to Advent as summarized in the following table (in thousands). These unpaid amounts are part of the Related Party expenses reported in the above section.

	June 30,		December 31,
	2023		2022
Advent BioServices - amount invoiced but unpaid	$	2,855	$	1,844
Advent BioServices - amount accrued but unpaid		3,496		4,736
Total payable and accrued, but unpaid to Advent BioServices	$	6,351	$	6,580

10. Preferred Stock

Series C Convertible Preferred Stock

During the six months ended June 30, 2023, the Company entered into various Subscription Agreements (the “Series C Subscription Agreements”) with certain investors (the “Series C Investors”). Pursuant to the Series C Subscription Agreements, the Company issued the Series C Investors an aggregate of 0.3 million shares of the Company’s Series C convertible preferred stock, par value $0.001 per share (the “Series C Shares”), at a weighted purchase price of $14.69 per share for proceeds of approximately $4.8 million.

During the six months ended June 30, 2023, the Company issued approximately 56,000 Series C Shares with a fair value of $1.0 million to certain lenders in lieu of cash payments of $0.9 million in debt, including $0.1 million accrued interest. The Company recognized an approximately $0.1 million debt extinguishment loss.

During the six months ended June 30, 2023, approximately 0.3 million Series C Shares with a book value of $3.6 million were converted into 6.4 million common shares at a ratio of 1:25.

The Company determined that the Series C Shares contain contingent redemption provisions allowing redemption by the holder upon certain defined events (“deemed liquidation events”). As the event that may trigger the redemption of the Series C Shares is not solely within the Company’s control, the Series C Shares are classified as mezzanine equity (temporary equity) in the Company’s condensed consolidated balance sheets.

11. Stockholders’ Deficit

Common Stock

On January 9, 2023, the Company filed a Certificate of Amendment of its Seventh Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of the State of Delaware, which effected an increase in the Company’s authorized shares of common stock, from 1.2  billion to 1.7 billion, par value $0.001 per share.

During the six months ended June 30, 2023, the Company received $2.8 million from the exercise of outstanding warrants with an exercise price between $0.153 and $0.85, of which $1.2 million was received in December 2022 as investor advances. The Company issued approximately 12.3 million shares of common stock upon these warrant exercises.

During the six months ended June 30, 2023, certain options and warrants holders elected to exercise some of their options and warrants pursuant to cashless exercise formulas. The Company issued approximately 9.9 million shares of common stock upon exercise of 10.6 million warrants and 1.5 million options at exercise prices between $0.20 and $0.35.

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NORTHWEST BIOTHERAPEUTICS, INC.

NOTES TO CONDENSED CONSOLIDATED STATEMENTS

During the six months ended June 30, the Company issued approximately 15.2 million shares of common stock to certain lenders in lieu of cash payments on $7.4 million of outstanding debt, including $0.7 million interest, and settled $1.1 million true-up provision (see Note 7).

Stock Purchase Warrants

The following is a summary of warrant activity for the three months ended March 31, 2023 (dollars in thousands, except per share data):

	Number of	Weighted Average		Remaining
	Warrants	Exercise Price		Contractual Term
Outstanding as of January 1, 2023	141,048	$	0.31	1.16
Warrants exercised for cash	(12,320)		0.22	—
Cashless warrrants exercise	(10,615)		0.20	—
Warrants expired and cancellation	(250)		1.36	—
Outstanding as of June 30, 2023	117,863	$	0.31	1.72

The options and warrants held by Ms. Powers and Mr. Goldman are subject to an ongoing suspension on a rolling basis pursuant to the Blocker Letter Agreement.

At June 30, 2023, of the approximately 118 million total outstanding warrants listed above, approximately 98 million warrants were under the Blocker Letter Agreement or suspension agreements.

Warrant Modifications

Between January 10 and June 30, 2023, the Company amended multiple warrants whereby the maturity dates of certain warrants were extended for an additional approximately 3 months. The value of these modifications were calculated using the Black-Scholes-Merton option pricing model based on the following weighted average assumptions.

	Post-modification			Pre-modification
Exercise price	$	0.29		$	0.30
Expected term (in years)		1.9			1.6
Volatility		70	%		72	%
Risk-free interest rate		4.7	%		4.6	%
Dividend yield		0	%		0	%

The incremental fair value attributable to the modified awards compared to the original awards immediately prior to the modification was calculated at $1.1 million, of which $0.2 million was associated with debt financing and was recognized as an additional debt discount (see Note 7), and the remaining $0.9 million was treated as a deemed dividend and is reflected as “Deemed dividend related to warrant modifications” in the accompanying condensed consolidated statement of operations and comprehensive loss.

12. Commitments and Contingencies

Operating Lease- Lessee Arrangements

The Company has operating leases for corporate offices in the U.S. and U.K., and for manufacturing facilities in the U.K. Leases with an initial term of 12 months or less are not recorded in the balance sheet. The Company has elected the practical expedient to account for each separate lease component of a contract and its associated non-lease components as a single lease component, thus causing all fixed payments to be capitalized. The Company also elected the package of practical expedients permitted within the new standard, which among other things, allows the Company to carry forward historical lease classification. The lease renewal options have not been included in the calculation of the lease liabilities and right-of-use (“ROU”) assets as the Company has not yet determined whether to exercise the options. Variable lease payment amounts that cannot be determined at the commencement of the lease such as increases in lease payments based on changes in index rates or usage, are not included in the ROU assets or liabilities. These are expensed as incurred and recorded as variable lease expense.

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NORTHWEST BIOTHERAPEUTICS, INC.

NOTES TO CONDENSED CONSOLIDATED STATEMENTS

At June 30, 2023, the Company had operating lease liabilities of approximately $4.8 million for both the 20-year lease of the building for the manufacturing facility in Sawston, U.K., and the current office lease in the U.S. and ROU assets of approximately $4.2 million for the Sawston lease and U.S. office lease are included in the condensed consolidated balance sheet.

The following summarizes quantitative information about the Company’s operating leases (amount in thousands):

	For the six months ended
	June 30, 2023
	U.K			U.S			Total
Lease cost
Operating lease cost	$	293		$	124		$	417
Short-term lease cost		49			—			49
Variable lease cost		—			7			7
Sub-lease income		(72)			—			(72)
Total	$	270		$	131		$	401
Other information
Operating cash flows from operating leases	$	(308)		$	(148)		$	(457)
Weighted-average remaining lease term – operating leases		8.2			0.9
Weighted-average discount rate – operating leases		12	%		12	%

	For the Six Months ended
	June 30, 2022
	U.K			U.S			Total
Lease cost
Operating lease cost	$	309		$	130		$	439
Short-term lease cost		34			—			34
Variable lease cost		—			12			12
Total		(73)			—			(73)
	$	270		$	142		$	412
Other information
Operating cash flows from operating leases	$	(325)		$	(144)		$	(469)
Weighted-average remaining lease term – operating leases		8.7			1.5
Weighted-average discount rate – operating leases		12	%		12	%

The Company recorded lease costs as a component of general and administrative expense during the six months ended June 30, 2023 and 2022, respectively.

Maturities of our operating leases, excluding short-term leases and sublease agreement, are as follows:

Six months ended December 31, 2023	$	466
Year ended December 31, 2024		838
Year ended December 31, 2025		633
Year ended December 31, 2026		633
Year ended December 31, 2027		633
Thereafter		6,947
Total		10,151
Less present value discount		(5,397)
Operating lease liabilities included in the Condensed Consolidated Balance Sheet at June 30, 2023	$	4,754

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NORTHWEST BIOTHERAPEUTICS, INC.

NOTES TO CONDENSED CONSOLIDATED STATEMENTS

Maturities of our operating leases under the sublease agreement, are as follows:

Six months ended December 31, 2023	$	73
Year ended December 31, 2024		145
Year ended December 31, 2025		145
Year ended December 31, 2026		145
Thereafter		1,740
Total	$	2,248

Advent BioServices Services Agreement

On May 14, 2018, the Company entered into a DCVax®-L Manufacturing and Services Agreement (“MSA”) with Advent BioServices, a related party which was formerly part of Cognate BioServices and was spun off separately as part of an institutional financing of Cognate. The MSA provides for manufacturing of DCVax-L products at an existing facility in London. The MSA is structured in the same manner as the Company’s prior agreements with Cognate BioServices. The MSA provides for certain payments for achievement of milestones and, as was the case under the prior agreement with Cognate BioServices, the Company is required to pay certain fees for dedicated production capacity reserved exclusively for DCVax production and pay for manufacturing of DCVax-L products for a certain minimum number of patients, whether or not the Company fully utilizes the dedicated capacity and number of patients. The MSA remains in force until five years after the first commercial sales of DCVax-L products pursuant to a marketing authorization, accelerated approval or other commercial approval, unless cancelled. Either party may terminate the MSA on twelve months’ notice, to allow for transition arrangements by both parties. During the notice period services would still be provided. Minimum required payments for this notice period are anticipated to total approximately £4.4 million ($5.6 million).

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NORTHWEST BIOTHERAPEUTICS, INC.

NOTES TO CONDENSED CONSOLIDATED STATEMENTS

The Company entered into SOW 6 with Advent, which was incorporated into the Ancillary Services Agreement on April 1, 2022 and amended it on September 26, 2022. The milestone incentives involve a combination of cash and stock and are not paid until they are achieved and earned, as described in Note 9.

German Tax Matter

The German tax authorities have audited our wholly owned subsidiary, NW Bio GmbH, for 2013-2015 and assessed additional tax against the subsidiary. NW Bio GmbH submitted substantial documentation to refute certain aspects of the assessments and the German tax authorities agreed in principle with the Company’s proposed revised approach and settlement offer. A final settlement bill was received from the German Tax Authority confirming that only a portion of the original bill was owed, €277,000 (approximately $329,000), for corporate taxes, interest, and reduced penalty for the period under audit, which the Company paid on September 2, 2021. The Company also received and paid the final settlement bill from the local authority for trade taxes for the audit period in the amount of €231,000 (approximately $251,000). On November 4, 2021, the Company received a letter from the local tax authorities asking for additional late fees of €513,000 (now approximately $558,000) on reimbursable withholding taxes that had been waived during the settlement process. On December 8, 2021, the Company appealed the assessment of additional late fees. Additionally, the Company requested that NW Bio GmbH be deregistered from the trade register, as it no longer had current operations. The deregistration was granted effective December 31, 2021. Between January 2022 and July 2022, the Company received tax bills for the corporate and trade taxes for the 2016-2020 tax years that totaled approximately €222,000 (approximately $241,000). On July 27, 2022, the Company was informed that the German Tax Authorities were prepared to waive €135,000 (approximately $147,000) of the penalties. The Company offered to pay this reduced penalty if an extended payment plan was approved. A response was received dated November 14, 2022 indicating that the tax authority would not be able to grant a further deferral of payment of these penalties. In a letter dated December 27, 2022, the Leipzig tax authority sent letters to the former and current managing directors of NW Bio GmbH giving 30 days to respond to a tax liability questionnaire. Based on the responses to the liability questionnaires the tax authorities have currently not directed any further measures against former and current managing directors of NW Bio GmbH with respect to tax liability proceedings. The Company currently has accrued for the current amounts owed for these penalties of €377,000 (approximately $410,000) as well as for all unpaid taxes as of June 30, 2023. Based on the Company’s current operating state in Germany and the negotiations, the Company believes, based on its evaluation under ASC 740, that the resolution of these tax matters will not likely result in a net material charge to the Company.

Other Contingent Payment Obligation

Between May and June 2023, the Company entered into certain non-dilutive funding agreements with multiple investors, pursuant to which the Company received funding of $4.1 million related to a gain contingency. These agreements are accounted for under ASC 470 and are recognized as contingent payment obligations on the Company’s condensed consolidated balance sheet. The Company’s payment obligations only apply when such are received by the Company.

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NORTHWEST BIOTHERAPEUTICS, INC.

NOTES TO CONDENSED CONSOLIDATED STATEMENTS

13. Subsequent Events

Between July 1, 2023 and August 9, 2023, the Company received $2.1 million in funding from the sale of preferred shares and proceeds of debt arrangements and proceeds related to a gain contingency.

Between July 1, 2023 and August 9, 2023, the Company issued approximately 84,000 shares of Series C preferred stock for proceeds of $1.1 million.

In July 2023, approximately 24,000 Series C Shares with a book value of $0.4 million were converted into 0.6 million common shares in accordance with their terms at a ratio of 1:25.

Between July and August 2, 2023, the Company issued approximately 4.9 million shares of common stock to a lender in lieu of cash payments on $2.5 million of outstanding debt, including $0.1 million interest. The Company also issued 0.3 million shares of common stock to that lender to extinguish $0.2 million Share liability.

On July 11, 2023, the Company entered into a one-year convertible note (the “July Convertible Note”) with an individual investor (the “Holder”) with an aggregate principal amount of $0.5 million. The Company received $0.5 million cash from the July Convertible Note. The July Convertible Note bears interest at 10% per annum, and is convertible into Series C preferred shares at $12.50 per share at the Holder’s sole option. The Series C preferred shares are convertible into common stock 30 days after the debt conversion date. Each Series C preferred share is convertible into 25 shares of common stock.

Between July 1, 2023 and August 9, 2023, the Company received $0.5 million in additional non-dilutive funding related to a gain contingency.

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

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our unaudited condensed consolidated financial statements and the notes to those statements included with this report. In addition to historical information, this report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those projected. The words “believe,” “expect,” “intend,” “anticipate,” and similar expressions are used to identify forward-looking statements, but some forward-looking statements are expressed differently. Many factors could affect our actual results, including those factors described under “Risk Factors” in our Form 10-K for the year ended December 31, 2022 and in Part II Item 1A of this report. These factors, among others, could cause results to differ materially from those presently anticipated by us. You should not place undue reliance on these forward-looking statements.

Overview

We are a biotechnology company focused on developing personalized immune therapies for cancer. We have developed a platform technology, DCVax®, which uses activated dendritic cells to mobilize a patient’s own immune system to attack their cancer.

Our lead product, DCVax®-L, is designed to treat solid tumor cancers in which the tumor can be surgically removed. We have completed a 331-patient international Phase III trial of DCVax-L for glioblastoma brain cancer (GBM).

The trial results were presented at a scientific conference in May 2022, and were reported in a peer reviewed publication in JAMA Oncology, a top scientific and medical journal.

In June 2023, the Company presented substantial information from analyses conducted by independent experts on the underlying biology and mechanism of action of its DCVax technology at an Industry Theater presentation during the ASCO (American Society of Clinical Oncology) conference. The Company is pursuing further analyses by independent experts, and plans to present further information at an appropriate future conference.

The Company is now in the final stages of preparing an application for regulatory approval of DCVax-L. The Company is working with teams of specialized consultants on preparation of the application package as well as related activities. One of the pre-requisites - obtaining regulatory approval of a Pediatric Investigation Plan (PIP) - was completed during 2022 on an accelerated basis, including regulatory approval to use the same trial design with external controls as was used in the Company’s Phase 3 trial.

In parallel with preparing the application for approval of DCVax-L, the Company is working with the contract research organization (CRO) and with specialized consultants on preparing the Trial Master File and sites to be inspection-ready for regulators.

The Company and the CRO continue to conduct long-term follow-up in connection with the Phase III trial of DCVax-L, as there are still patients alive.

The Company and Advent are working together to prepare for potential commercial operations. The buildout of Phase 1B of the Sawston facility, which had been under way since last year, has been completed. On July 24, 2023 the Company changed the name of its UK subsidiary from Aracaris Limited to Northwest Biotherapeutics Limited.

The Company’s wholly owned subsidiary, Flaskworks, is continuing its development work to optimize a system for closed and automated manufacturing of DCVax-L products, including optimizing yields. The Company views this as a centerpiece of efforts toward scale-up for potential commercial operations.

Supply chain issues and equipment backlogs continue to be factors affecting operations both for Advent and for Flaskworks. This includes months-long backlogs for certain equipment and materials. However, the work is progressing in spite of the backlogs.

The Company is in active discussions in regard to certain combination treatment regimens, and is planning for certain strategic trials with such combination treatments.

In the future, we plan to conduct clinical trials of DCVax-L for other types of solid tumor cancers, beyond brain cancer, when resources permit. Our second product, DCVax®-Direct, is designed to treat inoperable solid tumors. A 40-patient Phase I trial has been completed

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and it included treatment of a diverse range of more than a dozen types of cancers. We plan to work on preparations for Phase II trials of DCVax-Direct as resources permit.

Critical Accounting Policies and Estimates

Our discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of these financial statements requires us to make estimates and judgments that affect our reported amounts of assets, liabilities, revenues and expenses.

On an ongoing basis, we evaluate our estimates and judgments, including those related to derivative liabilities, accrued expenses and stock-based compensation. We based our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the reported amounts of revenues and expenses that are not readily apparent from other sources. Actual results could differ from those estimates, particularly given the significant social and economic disruptions and uncertainties associated with the lingering effects from the coronavirus pandemic (“COVID-19”) and the COVID-19 control responses.

Our critical accounting policies and significant estimates are detailed in our Annual Report on Form 10-K for the year ended December 31, 2022. Our critical accounting policies and significant estimates have not changed substantially from those previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2022 other than those included below.

Sequencing

The Company adopted a sequencing policy under ASC 815-40-35 to determine if reclassification of contracts from equity to liabilities is necessary pursuant to ASC 815 due to the Company’s inability to demonstrate if it has sufficient authorized shares. Certain contracts were classified as liabilities as the result of the instruments containing a potentially indeterminable number of shares and, most recently, due to the Company entering into agreements providing for the potential issuance of more shares than authorized. While temporary agreements are in place to keep the potential exercises beneath the number authorized, certain instruments are classified as liabilities, after allocating available authorized shares on the basis of the earliest grant date of potentially dilutive instruments. Pursuant to ASC 815, issuance of stock-based awards to the Company’s employees, nonemployees or directors are not subject to the sequencing policy.

On January 9, 2023, the Company filed a Certificate of Amendment of its Seventh Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of the State of Delaware, which effected an increase in the Company’s authorized shares of common stock, from 1.2 billion to 1.7 billion, par value $0.001 per share. As a result of this increase in authorized shares, the liability-classified warrants were reclassified to equity. Approximate 141 million warrants to purchase shares of the Company’s common stock were classified as liabilities through January 8, 2023.

Modification of Equity Classified Warrants

A change in the terms or conditions of a warrant is accounted for as a modification. For a warrant modification accounted for under ASC 815, the effect of a modification shall be measured as the difference between the fair value of the modified warrant over and the fair value of the original warrant immediately before its terms are modified, with each measured on the modification date. The accounting for any incremental fair value of the modified warrants over the original warrants is based on the specific facts and circumstances related to the modification. When a modification is directly attributable to an equity offering, the incremental change in fair value of the warrants is accounted for as an equity issuance cost. When a modification is directly attributable to a debt financing, the incremental change in fair value of the warrants is accounted for as a debt discount or debt issuance cost. For all other modifications, the incremental change in fair value is recognized as a deemed dividend.

Results of Operations

Operating costs:

Our operating costs and expenses consist primarily of research and development (R&D) expenses. R&D expenses include clinical trial expenses, and increased costs after completion of a Phase III trial, especially for the extensive preparations, and teams of expert consultants, required for an application for product approval.

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In addition to clinical trial and post-trial costs, our operating costs may include ongoing work relating to our DCVax products, including R&D, product characterization, manufacturing process development, quality control process development, and related matters. Additional substantial costs relate to the development and expansion of manufacturing capacity.

Our operating costs also include the costs of preparations for the launch of new or expanded clinical trial programs, such as our anticipated trials of combination treatment regimens. The preparation costs include payments to regulatory consultants, lawyers, statisticians, sites and others, evaluation of potential investigators, the clinical trial sites and the CROs managing the trials and other service providers, and expenses related to institutional approvals, clinical trial agreements (business contracts with sites), training of medical and other site personnel, trial supplies and other.

Our operating costs also include legal and accounting costs in operating the Company.

The foregoing operating costs include the costs for Flaskworks’ ongoing operations and intellectual property filings, and the operations of our subsidiaries in the U.K., the Netherlands and Germany.

Research and development:

R&D expenses include costs for substantial external scientific personnel, technical and regulatory advisers, and others, costs of laboratory supplies used in our internal research and development projects, travel, regulatory compliance, and expenditures for preclinical and clinical trial operation and management when we are actively engaged in clinical trials.

Because we are a pre-revenue company, we do not allocate R&D costs on a project basis. We adopted this policy, in part, due to the unreasonable cost burden associated with accounting at such a level of detail and our limited number of financial and personnel resources.

General and administrative:

General and administrative expenses include personnel related salary and benefit expenses, cost of facilities, insurance, travel, legal services, property and equipment and amortization of stock options and warrants.

Three Months Ended June 30, 2023 and 2022

We recognized a net loss of $14.4 million and $29.7 million for the three months ended June 30, 2023 and 2022, respectively.

Research and Development Expense

For the three months ended June 30, 2023 and 2022, research and development expense was $6.2 million and $13.6 million, respectively. The decrease in 2023 was mainly related to the following factors:

● We incurred $0.1 million and $9.1 million R&D expense related to one-time milestone activities under the SOW 6 with Advent BioServices for the three months ended June 30, 2023 and 2022, respectively. We completed 9 out of the total 10 one-time milestones as of March 31, 2023, and therefore, we only expensed $0.1 million for the three months ended June 30, 2023 related to the remaining one milestone. During the three months ended June 30, 2022, we expensed $3.8 million (but only paid $0.5 million) for one-time cash milestones and $5.3 million (but only issued 1.5 million shares of common stock at fair value of $1.4 million) for one-time stock-based milestones that we believe are probable to be achieved and hence to become payable during the contract period.  

● The stock-based compensation in research and development related to stock options and Flaskworks performance-based awards were reduced by $0.5 million during the three months ended June 30, 2023 compared to the same period in 2022, which was related to less amortization related to previously granted awards.

● An increased level of research and development activities in 2023 compared to 2022, which resulted in other R&D expenses increased by approximate $2.0 million.

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General and Administrative Expense

For the three months ended June 30, 2023 and 2022, general and administrative expenses was $7.6 million and $7.9 million, respectively. The decrease in 2023 was mainly related to a decrease of $0.3 million in consulting expense and $0.4 million in travel and conference expenses, which is partly offset by an increase of $0.2 million in stock-based compensation.

Change in Fair Value of Derivatives

We recognized a non-cash gain of $0.1 million and a non-cash loss of $4.3 million for the three months ended June 30, 2023 and 2022, respectively. The non-cash gain in 2023 was primarily due to the decrease of our stock price.

The 2022 loss was primarily due to the extension of the exercise periods of certain warrants and offset by a decrease of stock price as of June 30, 2022 compared to March 31, 2022.

Debt Extinguishment

During the three months ended June 30, 2023, we issued approximately 6.9 million shares of common stock with a fair value of $3.9 million to certain lenders in lieu of cash payments of $3.2 million of debt, including $0.5 million accrued interest. In addition, pursuant to exchange agreements executed with various holders, the Company is required to potentially issue additional common stock (the “Share liability”) if the stock price is less than the price defined in the exchange agreement as of the true-up date. During the three months ended June 30, 2023, we extinguished Share liabilities of $0.4 million and recognized an additional $0.1 million of Share liabilities. We recognized an approximately $0.4 million debt extinguishment loss during the three months ended June 30, 2023 from the debt redemption.

During the three months ended June 30, 2023, we issued approximately 13,000 shares of Series C preferred stock at fair value of $0.2 million to certain lenders in lieu of cash payments of $0.2 million debt, including $25,000 accrued interest. We recognized an approximately $24,000 debt extinguishment loss.

Interest Expense

During the three months ended and June 30, 2023 and 2022, we recorded interest expense of $1.3 million and $1.4 million, respectively. The decrease in interest expense in 2023 was mainly related to a decrease of outstanding debt as a result of the redemption of approximate $18.1 million debt in 2022.

Foreign currency transaction gain (loss)

During the three months ended and June 30, 2023 and 2022, we recognized foreign currency transaction gain of $0.7 million and loss of $2.8 million, respectively. The gain during the three months ended June 30, 2023 was due to the weakening of the U.S. dollar relative to the British pound sterling, while the loss during the three months ended March 31, 2022 was due to the strengthening of the U.S. dollar relative to the British pound sterling.

Six Months Ended June 30, 2023 and 2022

We recognized a net loss of $25.1 million and $43.9 million for the six months ended June 30, 2023 and 2022, respectively.

Research and Development Expense

For the six months ended June 30, 2023 and 2022, research and development expense was $13.1 million and $18.5 million, respectively. The decrease in 2023 was mainly related to the followings:

● We incurred $1.4 million and $9.1 million R&D expense related to one-time milestone activities under the SOW 6 with Advent BioServices for the six months ended June 30, 2023 and 2022, respectively. Advent had completed 7 out of the total 10 one-time milestones as of December 31, 2022, and majority of the one-time R&D expense was recognized in 2022. Therefore, we only expensed $1.4 million for the six months ended June 30, 2023 related to the remaining 3 milestones. During the six months ended June 30, 2022, we expensed $3.8 million (but only paid $0.5 million) for one-time cash milestones and $5.3 million (but only issued

29

1.5 million shares of common stock at fair value of $1.4 million) for one-time stock-based milestones that we believe are probable to be achieved and hence to become payable during the contract period.

● The stock-based compensation in research and development related to stock options and Flaskworks performance-based awards were reduced by $0.8 million during the six months ended June 30, 2023 compared to the same period in 2022, which was related to less amortization related to previously granted awards.

● An increased level of research and development activities in 2023 compared to 2022, which resulted in other R&D expenses increasing by approximately $3.0 million.

General and Administrative Expense

For the six months ended June 30, 2023 and 2022, general and administrative expenses was $14.5 million and $15.8 million, respectively. The decrease in 2023 was mainly related to a decrease of $1.2 million in consulting expense and $0.4 million in travel and conference expenses, which is offset by an increase of $0.1 million in stock-based compensation.

Change in Fair Value of Derivatives

We recognized a non-cash gain of $4.0 million and a non-cash loss of $3.7 million for the six months ended June 30, 2023 and 2022, respectively. The non-cash gain in 2023 was primarily due to the decrease of our stock price.

The 2022 loss was primarily due to the extension of the exercise periods of certain warrants and offset by a decrease of stock price as of June 30, 2022 compared to December 31, 2021.

Debt Extinguishment

During the six months ended June 30, 2023, we issued approximately 15.2 million shares of common stock with a fair value of $9.6 million to certain lenders in lieu of cash payments of $7.4 million of debt, including $0.7 million accrued interest. In addition, pursuant to exchange agreements executed with various holders, the Company is required to potentially issue additional common stock (the “Share liability”) if the stock price is less than the price defined in the exchange agreement as of the true-up date. During the six months ended June 30, 2023, we extinguished Share liabilities of $1.1 million and recognized an additional $0.6 million of Share liabilities. We recognized an approximately $1.8 million debt extinguishment loss during the six months ended June 30, 2023 from the debt redemption.

During the six months ended June 30, 2023, we issued approximately 56,000 shares of Series C preferred stock at fair value of $1.0 million to certain lenders in lieu of cash payments of $0.9 million debt, including $0.1 million accrued interest. We recognized an approximately $0.1 million debt extinguishment loss.

Interest Expense

During the six months ended and June 30, 2023 and 2022, we recorded interest expense of $2.3 million and $3.3 million, respectively. The decrease in interest expense in 2023 was mainly related to a decrease of outstanding debt as a result of the redemption of approximate $18.1 million debt in 2022.

Foreign currency transaction gain (loss)

During the three months ended and June 30, 2023 and 2022, we recognized foreign currency transaction gain of $1.6 million and loss of $3.7 million, respectively. The gain during the six months ended June 30, 2023 was due to the weakening of the U.S. dollar relative to the British pound sterling, while the loss during the six months ended June 30, 2022 was due to the strengthening of the U.S. dollar relative to the British pound sterling.

Liquidity and Capital Resources

We have experienced recurring losses from operations since inception. We have not yet established an ongoing source of revenues and must cover our operating expenses through debt and equity financings to allow us to continue as a going concern. Our ability to continue

30

as a going concern depends on the ability to obtain adequate capital to fund operating losses until we generate adequate cash flows from operations to fund our operating costs and obligations. If we are unable to obtain adequate capital, we could be forced to cease operations.

We depend upon our ability, and will continue to attempt, to secure equity and/or debt financing. We cannot be certain that additional funding will be available on acceptable terms, or at all. Our management determined that there was substantial doubt about our ability to continue as a going concern for at least one year after the annual consolidated financial statements were issued, and management’s concerns about our ability to continue as a going concern within the year following this report persist.

Cash Flow

Operating Activities

During the six months ended June 30, 2023 and 2022, net cash outflows from operations were approximately $22.8 million and $27.8 million, respectively. The decrease in cash used in operating activities was primarily attributable to a decrease of $4.2 million in payments to external service providers and a decrease of $0.8 million interest payments to note holders.

Investing Activities

We spent approximately $2.6 million and $0.5 million in cash for the purchase of additional equipment and our build out in Sawston, UK during the six months ended June 30, 2023 and 2022, respectively.

Financing Activities

We received approximately $4.8 million of cash from issuance of 0.3 million shares of Series C convertible preferred stock during the six months ended June 30, 2023.

During the six months ended June 30, 2023, we received approximately $10.0 million in cash proceeds from the issuance of a loan to a commercial lender, and during the six months ended June 30, 2022, we received approximately $0.6 million in cash proceeds from the issuance of multiple loans to individual lenders.  

We received approximately $1.6 million and $9.6 million of cash from the exercise of warrants during the three months ended June 30, 2023 and 2022, respectively.

We received approximately $9.5 million of cash from issuance of 13.1 million shares of common stock during the six months ended June 30, 2022.

We received approximately $1.1 million of cash from issuance of convertible notes to individual lenders during the six months ended June 30, 2023.

We received $4.1 million from issuance of non-dilutive funding agreements during the six months ended June 30, 2023.

We made aggregate debt payments of $0.2 million and $5.3 million during the six months ended June 30, 2023 and 2022, respectively.

We made repayment of $0.1 million of investor advances during the six months ended June 30, 2023.

Other factors affecting our ongoing funding requirements include the number of staff we employ, the number of sites, number of patients and amount of activity in our clinical trial programs, the costs of further product and process development work relating to our DCVax products, the costs of preparations for Phase II trials, the costs of expansion of manufacturing, and unanticipated developments. The extent of resources available to us will determine which programs can move forward and at what pace.

Off-Balance Sheet Arrangements

Since our inception, we have not engaged in any off-balance sheet arrangements, as defined in the rules and regulations of the SEC.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Market risk represents the risk of loss that may result from the change in value of financial instruments due to fluctuations in its market price. Market risk is inherent in all financial instruments. Market risk may be exacerbated in times of trading illiquidity when market

31

participants refrain from transacting in normal quantities and/or at normal bid-offer spreads. Our exposure to market risk is directly related to derivatives, debt and equity linked instruments related to our financing activities.

Our assets and liabilities are overwhelmingly denominated in U.S. dollars. We do not use foreign currency contracts or other derivative instruments to manage changes in currency rates. We do not now, nor do we plan to, use derivative financial instruments for speculative or trading purposes. However, these circumstances might change.

The primary quantifiable market risk associated with our financial instruments is sensitivity to changes in interest rates. Interest rate risk represents the potential loss from adverse changes in market interest rates. We use an interest rate sensitivity simulation to assess our interest rate risk exposure. For purposes of presenting the possible earnings effect of a hypothetical, adverse change in interest rates over the 12-month period from our reporting date, we assume that all interest rate sensitive financial instruments will be impacted by a hypothetical, immediate 100 basis point increase in interest rates as of the beginning of the period. The sensitivity is based upon the hypothetical assumption that all relevant types of interest rates that affect our results would increase instantaneously, simultaneously and to the same degree. We do not believe that our cash and equivalents have significant risk of default or illiquidity.

The sensitivity analyses of the interest rate sensitive financial instruments are hypothetical and should be used with caution. Changes in fair value based on a 1% or 2% variation in an estimate generally cannot be extrapolated because the relationship of the change in the estimate to the change in fair value may not be linear. Also, the effect of a variation in a particular estimate on the fair value of financial instruments is calculated independent of changes in any other estimate; in practice, changes in one factor may result in changes in another factor, which might magnify or counteract the sensitivities. In addition, the sensitivity analyses do not consider any action that we may take to mitigate the impact of any adverse changes in the key estimates.

Based on our analysis, as of June 30, 2023, the effect of a 100+/- basis point change in interest rates on the value of our financial instruments and the resultant effect on our net loss are considered immaterial.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation as of June 30, 2023, of the design and operation of our disclosure controls and procedures, as such terms are defined in Exchange Act Rules 13a-15(e) and 15d-15(e). Based on this evaluation, management concluded that, as of such date, our disclosure controls and procedures are effective to ensure that information required to be disclosed by us in our Exchange Act reports is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

No change in internal control over financial reporting occurred during the most recent quarter with respect to our operations, which materially affected, or is reasonable likely to materially affect, our internal controls over financial reporting.

32

Part II - Other Information

Item 1. Legal Proceedings

On December 1, 2022, we filed a Complaint in the United States District Court for the Southern District of New York against certain market makers. The Complaint alleges that the defendants engaged in manipulation of the Company’s stock, in violation of the Securities Exchange Act of 1934 and common law fraud, over a period of years. On March 20, 2023, the defendants filed a Motion to Dismiss the Complaint.  On April 10, 2023, we filed an Amended Complaint against Canaccord Genuity LLC, Citadel Securities LLC, G1 Execution Services LLC, GTS Securities LLC, Instinet LLC, Lime Trading Corp., and Virtu Americas LLC (Northwest Biotherapeutics Inc. v. Canaccord, et al., No. 1:22-cv-10185-GHW-GWG).  The Company plans to pursue this case vigorously.

As previously reported, three stockholders filed in the Delaware Court of Chancery three similar derivative lawsuits against the Company and certain of its directors and officers, including J. Cofer Black, Marnix L. Bosch, Alton L. Boynton, Leslie J. Goldman, Jerry Jasinowski, Navid Malik, and Linda F. Powers (the “Individual Defendants”), alleging the Individual Defendants (i) breached their fiduciary duties, and (ii) were unjustly enriched by director and officer compensation awarded to the Individual Defendants—notwithstanding the fact that approximately 90% of shareholders voted to approve of the Company’s executive compensation (the same compensation that these three stockholders are seeking to challenge) through its Say on Pay vote, and the director awards are subject to shareholder approval. On March 31, 2022, the Delaware Court of Chancery consolidated these actions into a single action under the caption In re Northwest Biotherapeutics, Inc. Stockholder Litigation (the “Derivative Action”).

The Company believes these cases are baseless and is vigorously contesting the Derivative Action.On December 30, 2022, shareholders approved the challenged grants to the directors and ratified the challenged awards to the officers. On February 22, 2023, the Company filed a Motion to Dismiss the case. The parties fully briefed the motion in April 2023 and oral argument on the motion is scheduled for September 2023.

Item 1A. Risk Factors

Applicable risk factors are set forth in the Company’s report on Form 10-K for 2022.

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

None.

Item 3. Defaults Upon Senior Securities

Not Applicable.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

33

Item 6. Exhibits

21.1	Subsidiaries of the Registrant
21.2	Certificate of Incorporation on Change of Name
31.1	Certification of President (Principal Executive Officer and Principal Financial and Accounting Officer), Pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of President, Chief Executive Officer and Principal Financial and Accounting Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	Inline XBRL Instance Document.
101.SCH	Inline XBRL Schema Document.
101.CAL	Inline XBRL Calculation Linkbase Document.
101.DEF	Inline XBRL Definition Linkbase Document.
101.LAB	Inline XBRL Label Linkbase Document.
101.PRE	Inline XBRL Presentation Linkbase Document.
104	The cover page from the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, formatted in Inline XBRL (included as Exhibit 101).

*    Filed herewith

**  Furnished herewith

34

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.

	NORTHWEST BIOTHERAPEUTICS, INC
Dated: August 9, 2023	By:	/s/ Linda F. Powers
		Name:	Linda F. Powers
		Title:	President and Chief Executive Officer
			Principal Executive Officer
			Principal Financial and Accounting Officer

35

EX-21.1

EXHIBIT 21.1

Subsidiaries of the Registrant

Name:	Jurisdiction
Northwest Biotherapeutics Limited	United Kingdom
Aracaris Capital, Ltd.	United Kingdom
NW Bio Gmbh	Germany
Northwest Biotherapeutics B.V.	Netherlands
Flaskworks LLC	United States

EX-21.2

EXHIBIT 21.2

CERTIFICATE OF INCORPORATION

ON CHANGE OF NAME

Company Number 9103355

The Registrar of Companies for England and Wales hereby certifies that under the Companies Act 2006:

ARACARIS LIMITED

a company incorporated as private limited by shares, having its registered office situated in England and Wales, has changed its name to:

NORTHWEST BIOTHERAPEUTICS LIMITED

Given at Companies House on 24th July 2023.

The above information was communicated by electronic means and authenticated by

the Registrar of Companies under section 1115 of the Companies Act 2006.

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Linda F. Powers, certify that:

(1) I have reviewed this quarterly report on Form 10-Q of Northwest Biotherapeutics, Inc.;

(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) I am 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 my supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to me 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 my 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) I have disclosed, based on my 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 9, 2023
	By:	/s/ Linda F. Powers
		Name:	Linda F. Powers
		Title:	President and Chief Executive Officer
			Principal Executive Officer
			Principal Financial and Accounting 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 quarterly report of Northwest Biotherapeutics, Inc. (the “Company”) on Form 10-Q for the quarter ended June 30, 2023, as filed with the Securities and Exchange Commission (the “Report”), I, Linda F. Powers, 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.

Date: August 9, 2023
	By:	/s/ Linda F. Powers
		Name:	Linda F. Powers
		Title:	President and Chief Executive Officer
			Principal Executive Officer
			Principal Financial and Accounting Officer

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2023	Aug. 07, 2023
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-35737
Entity Registrant Name	NORTHWEST BIOTHERAPEUTICS, INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-3306718
Entity Address, Address Line One	4800 Montgomery Lane
Entity Address, Address Line Two	Suite 800
Entity Address, City or Town	Bethesda
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	20814
City Area Code	240
Local Phone Number	497-9024
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	NWBO
Security Exchange Name	NONE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,121,070,972
Entity Central Index Key	0001072379
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--12-31
Amendment Flag	false

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 1,424	$ 6,965
Prepaid expenses and other current assets	3,218	2,460
Total current assets	4,642	9,425
Non-current assets:
Property, plant and equipment, net	17,286	13,418
Construction in progress		2,028
Right-of-use asset, net	4,231	4,189
Indefinite-lived intangible asset	1,292	1,292
Goodwill	626	626
Other assets	361	345
Total non-current assets	23,796	21,898
TOTAL ASSETS	28,438	31,323
Current liabilities:
Accounts payable and accrued expenses	12,107	10,687
Accounts payable and accrued expenses to related parties and affiliates	6,551	6,955
Convertible notes, net	1,858	135
Notes payable, net	8,403	15,403
Contingent payable derivative liability	8,706	8,668
Warrant liability	1,083	80,559
Investor advances	609	2,566
Share liability	223	678
Lease liabilities	385	354
Total current liabilities	39,925	126,005
Non-current liabilities:
Notes payable, net of current portion, net	15,743	5,991
Lease liabilities, net of current portion	4,369	4,370
Contingent payment obligation	4,050
Total non-current liabilities	24,162	10,361
Total liabilities	64,087	136,366
COMMITMENTS AND CONTINGENCIES
Stockholders' deficit:
Preferred stock ($0.001 par value); 100,000,000 shares authorized as of June 30, 2023 and December 31, 2022, respectively
Common stock ($0.001 par value); 1,700,000,000 shares authorized; 1,115.2 million and 1,068.4 million shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	1,115	1,068
Additional paid-in capital	1,258,259	1,164,885
Stock subscription receivable	(79)	(79)
Accumulated deficit	(1,322,222)	(1,297,122)
Accumulated other comprehensive income	1,893	3,145
Total stockholders' deficit	(61,034)	(128,103)
TOTAL LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS' DEFICIT	28,438	31,323
Series C Convertible Preferred Stock
Mezzanine equity:
Series C Convertible Preferred Stock, 10,000,000 shares designated; 1.5 million and 1.4 million shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively; aggregate liquidation preference of $23.7 million	$ 25,385	$ 23,060

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	100,000,000	100,000,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	1,700,000,000	1,700,000,000
Common stock, shares issued	1,115,200,000	1,068,400,000
Common stock, shares outstanding	1,115,200,000	1,068,400,000
Series C Convertible Preferred Stock
Temporary equity, shares designated	10,000,000	10,000,000
Temporary equity, shares issued	1,500,000	1,400,000
Temporary equity, shares outstanding	1,546,000	1,415,000
Temporary equity, aggregate liquidation preference	$ 23.7	$ 23.7

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues:
Research and other	$ 201	$ 477	$ 1,081	$ 880
Total revenues	201	477	1,081	880
Operating costs and expenses:
Research and development	6,214	13,645	13,075	18,465
General and administrative	7,564	7,931	14,547	15,800
Total operating costs and expenses	13,778	21,576	27,622	34,265
Loss from operations	(13,577)	(21,099)	(26,541)	(33,385)
Other income (expense):
Change in fair value of derivative liabilities	107	(4,254)	3,987	(3,714)
Change in fair value of share liabilities	99		47
(Loss) gain from extinguishment of debt	(472)	(110)	(1,880)	300
Interest expense	(1,302)	(1,432)	(2,329)	(3,335)
Foreign currency transaction gain (loss)	697	(2,773)	1,616	(3,748)
Total other income (loss)	(871)	(8,569)	1,441	(10,497)
Net loss	(14,448)	(29,668)	(25,100)	(43,882)
Deemed dividend related to warrant modification	519		914
Net loss attributable to common stockholders	(14,967)	(29,668)	(26,014)	(43,882)
Other comprehensive income (loss)
Foreign currency translation adjustment	(502)	2,375	(1,252)	3,183
Total comprehensive loss	$ (15,469)	$ (27,293)	$ (27,266)	$ (40,699)
Net loss per share applicable to common stockholders, Basic	$ (0.01)	$ (0.01)	$ (0.02)	$ 0.21
Net loss per share applicable to common stockholders, Diluted	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.06)
Weighted average shares used in computing basic loss per share	1,108,420	1,003,976	1,091,754	981,737
Weighted average shares used in computing diluted loss per share	1,108,420	1,003,976	1,091,754	981,737

XML

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT - USD ($) shares in Thousands, $ in Thousands	Series C Convertible Preferred Stock	Common Stock [Member]	Additional Paid-in Capital [Member]	Subscription Receivable [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss)	Total
Increase (Decrease) in Temporary Equity Deficit
Reclassification of warrant liabilities related to warrants exercised for cash			$ 25,379				$ 25,379
Balance at the beginning at Dec. 31, 2021		$ 948	1,066,873	$ (79)	$ (1,192,090)	$ 357	(123,991)
Balance at the beginning (in shares) at Dec. 31, 2021		948,445
Increase (Decrease) in Stockholders' Deficit
Issuance of common stock for cash		$ 13	9,676				9,689
Issuance of common stock for cash ( in shares)		13,137
Warrants exercised for cash		$ 39	9,517				9,556
Warrants exercised for cash (in shares)		39,003
Reclassification of warrant liabilities related to warrants exercised for cash			$ 19,688				19,688
Cashless Warrants Exercised		29	(29)
Cashless warrants and stock options exercise (in shares)		28,903
Stock-based compensation		$ 1	$ 6,379				6,380
Stock-based compensation (in shares)		1,505
Cumulative translation adjustment						3,183	3,183
Net loss					(43,882)		(43,882)
Balance at the end at Jun. 30, 2022		$ 1,034	1,139,811	(79)	(1,235,972)	3,540	(91,666)
Balance at the end (in shares) at Jun. 30, 2022		1,034,475
Balance at the end (in shares) at Dec. 31, 2022	1,415
Balance at the end at Dec. 31, 2022	$ 23,060
Balance at the beginning at Dec. 31, 2021		$ 948	1,066,873	(79)	(1,192,090)	357	(123,991)
Balance at the beginning (in shares) at Dec. 31, 2021		948,445
Increase (Decrease) in Stockholders' Deficit
Issuance of common stock and warrants for conversion of debt and accrued interest		$ 4	2,328				2,332
Issuance of common stock and warrants for conversion of debt and accrued interest (in shares)		3,482
Balance at the end at Dec. 31, 2022		$ 1,068	1,164,885	(79)	(1,297,122)	3,145	(128,103)
Balance at the end (in shares) at Dec. 31, 2022		1,068,394
Increase (Decrease) in Temporary Equity Deficit
Issuance of stock for cash (in shares)		8,584
Issuance of stock for cash		$ 8	6,317				6,325
Balance at the beginning at Mar. 31, 2022		$ 970	1,083,723	(79)	(1,206,304)	1,165	(120,525)
Balance at the beginning (in shares) at Mar. 31, 2022		969,697
Increase (Decrease) in Stockholders' Deficit
Issuance of stock for cash		$ 8	6,317				6,325
Issuance of stock for cash (in shares)		8,584
Warrants exercised for cash		$ 24	5,347				5,371
Warrants exercised for cash (in shares)		23,747
Issuance of common stock and warrants for conversion of debt and accrued interest		$ 2	1,343				1,345
Issuance of common stock and warrants for conversion of debt and accrued interest (in shares)		2,070
Reclassification of warrant liabilities related to warrants exercised for cash			11,973				11,973
Cashless warrants and stock options exercise		$ 29	(29)
Cashless warrants and stock options exercise (in shares)		28,877
Stock-based compensation		$ 1	5,762				5,763
Stock-based compensation (in shares)		1,500
Reclassification of warrant liabilities related to cashless warrants exercise			25,375				25,375
Cumulative translation adjustment						2,375	2,375
Net loss					(29,668)		(29,668)
Balance at the end at Jun. 30, 2022		$ 1,034	1,139,811	(79)	(1,235,972)	3,540	(91,666)
Balance at the end (in shares) at Jun. 30, 2022		1,034,475
Increase (Decrease) in Temporary Equity Deficit
Issuance of stock for cash (in shares)	324
Issuance of stock for cash	$ 4,756
Issuance of stock in lieu of debt redemption (in shares)	56
Issuance of stock in lieu of debt redemption	$ 1,013
Issuance of stock by common stock warrant exercise (in shares)	(257)	6,430
Issuance of stock by common stock warrant exercise	$ (3,562)	$ 7	3,555				3,562
Stock Based Compensation	$ 118
Balance at the end (in shares) at Jun. 30, 2023	1,546	1,115,183
Balance at the end at Jun. 30, 2023	$ 25,385
Balance at the beginning at Dec. 31, 2022		$ 1,068	1,164,885	(79)	(1,297,122)	3,145	(128,103)
Balance at the beginning (in shares) at Dec. 31, 2022		1,068,394
Increase (Decrease) in Stockholders' Deficit
Issuance of stock for cash	$ 4,756
Issuance of stock for cash (in shares)	324
Issuance of stock in lieu of debt redemption	$ 1,013
Issuance of stock in lieu of debt redemption (in shares)	56
Issuance of stock by common stock warrant exercise	$ (3,562)	$ 7	3,555				3,562
Issuance of stock by common stock warrant exercise (in shares)	(257)	6,430
Warrants exercised for cash		$ 12	2,757				$ 2,769
Warrants exercised for cash (in shares)		12,320
Cashless stock options exercise		$ 10	(10)
Cashless stock options exercise (in shares)		9,879					1,827
Reclassification of warrant liabilities to stockholders' deficit			76,258				$ 76,258
Issuance of common stock and warrants for conversion of debt and accrued interest		$ 15	9,549				9,564
Issuance of common stock and warrants for conversion of debt and accrued interest (in shares)		15,160
Stock-based compensation		$ 3	1,105				1,108
Stock-based compensation (in shares)		3,000
Cumulative translation adjustment						(1,252)	(1,252)
Warrants modification			1,074				1,074
Deemed dividend related to warrants modification			(914)				(914)
Net loss					(25,100)		(25,100)
Balance at the end at Jun. 30, 2023		$ 1,115	1,258,259	(79)	(1,322,222)	1,893	(61,034)
Balance at the end (in shares) at Jun. 30, 2023		1,115,183
Balance at the beginning (in shares) at Mar. 31, 2023	1,416
Balance at the beginning at Mar. 31, 2023	$ 23,752
Increase (Decrease) in Temporary Equity Deficit
Issuance of stock for cash (in shares)	176
Issuance of stock for cash	$ 2,371
Issuance of stock in lieu of debt redemption (in shares)	13
Issuance of stock in lieu of debt redemption	$ 207
Issuance of stock by common stock warrant exercise (in shares)	(59)	1,484
Issuance of stock by common stock warrant exercise	$ (945)	$ 2	943				945
Balance at the end (in shares) at Jun. 30, 2023	1,546	1,115,183
Balance at the end at Jun. 30, 2023	$ 25,385
Balance at the beginning at Mar. 31, 2023		$ 1,083	1,248,397	(79)	(1,307,774)	2,395	(55,978)
Balance at the beginning (in shares) at Mar. 31, 2023		1,083,084
Increase (Decrease) in Stockholders' Deficit
Issuance of stock for cash	$ 2,371
Issuance of stock for cash (in shares)	176
Issuance of stock in lieu of debt redemption	$ 207
Issuance of stock in lieu of debt redemption (in shares)	13
Issuance of stock by common stock warrant exercise	$ (945)	$ 2	943				945
Issuance of stock by common stock warrant exercise (in shares)	(59)	1,484
Warrants exercised for cash		$ 11	2,510				2,521
Warrants exercised for cash (in shares)		11,553
Cashless stock options exercise		$ 9	(9)
Cashless stock options exercise (in shares)		9,169
Issuance of common stock and warrants for conversion of debt and accrued interest		$ 7	3,941				3,948
Issuance of common stock and warrants for conversion of debt and accrued interest (in shares)		6,893
Stock-based compensation		$ 3	187				190
Stock-based compensation (in shares)		3,000
Reclass issued milestone shares from liability to equity			2,130				2,130
Cumulative translation adjustment						(502)	(502)
Warrants modification			679				679
Deemed dividend related to warrants modification			(519)				(519)
Net loss					(14,448)		(14,448)
Balance at the end at Jun. 30, 2023		$ 1,115	$ 1,258,259	$ (79)	$ (1,322,222)	$ 1,893	$ (61,034)
Balance at the end (in shares) at Jun. 30, 2023		1,115,183
Increase (Decrease) in Temporary Equity Deficit
Stock Based Compensation( in shares)	8

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash Flows from Operating Activities:
Net loss	$ (25,100)	$ (43,882)
Reconciliation of net loss to net cash used in operating activities:
Depreciation and amortization	685	624
Amortization of debt discount	1,276	1,509
Change in fair value of derivatives	(3,987)	3,714
Change in fair value of share liability	(47)
Loss (gain) from extinguishment of debt	1,880	(300)
Amortization of operating lease right-of-use asset	138	121
Stock-based compensation for services	1,211	6,380
Subtotal of non-cash charges	1,156	12,048
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(681)	(286)
Other non-current assets	(14)	660
Accounts payable and accrued expenses	2,206	1,533
Related party accounts payable and accrued expenses	(404)	2,056
Lease liabilities	77	63
Net cash used in operating activities	(22,760)	(27,808)
Cash Flows from Investing Activities:
Purchase of equipment and construction in progress	(2,582)	(466)
Net cash used in investing activities	(2,582)	(466)
Cash Flows from Financing Activities:
Proceeds from issuance of common stock		9,465
Proceeds from exercise of warrants	1,566	9,556
Proceeds from investor advance	7
Proceeds from issuance of notes payable, net	10,000	600
Proceeds from issuance of convertible notes payable, net	1,149
Proceeds from contingent payment obligation	4,050
Repayment of notes payable	(208)	(5,290)
Repayment of investor advances	(100)
Net cash provided by financing activities	21,220	14,331
Effect of exchange rate changes on cash and cash equivalents	(1,419)	3,605
Net decrease in cash and cash equivalents	(5,541)	(10,338)
Cash and cash equivalents, beginning of the period	6,965	15,169
Cash and cash equivalents, end of the period	1,424	4,831
Supplemental schedule of non-cash investing and financing activities:
Cashless warrants and stock options exercise	10	29
Reclassification of warrant liabilities related to warrants exercised for cash		19,688
Reclassification of warrant liabilities to stockholders' deficit	76,258
Reclassification of warrant liabilities related to cashless warrants exercise		25,379
Reclassification of investor advances to convertible notes payable	661
Reclassification of investor advances to stockholders' deficit	1,203
Issuance of common stock for conversion of debt and accrued interest	9,564	2,229
Issuance of Series C convertible preferred stock in lieu of debt redemption	1,013
Series C convertible preferred stock conversion	3,562
Capital expenditures included in accounts payable	266	49
Reclassification between shares payable and equity		250
Deemed dividend related to warrant modification	914
Convertible notes payable
Supplemental disclosure of cash flow information
Interest payments on notes payable	(30)	$ (876)
Series C convertible preferred stock
Cash Flows from Financing Activities:
Proceeds from issuance of Series C convertible preferred stock	$ 4,756

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Organization and Description of Business

6 Months Ended

Jun. 30, 2023

Organization and Description of Business

Organization and Description of Business

1. Organization and Description of Business

Northwest Biotherapeutics, Inc. and its wholly owned subsidiaries Flaskworks, Northwest Biotherapeutics Limited (formerly known as Aracaris Ltd), Aracaris Capital, Ltd, Northwest Biotherapeutics B.V., and NW Bio GmbH (collectively, the “Company”, “we”, “us” and “our”) were organized to discover and develop innovative immunotherapies for cancer. The Company has developed DCVax® platform technologies for both operable and inoperable solid tumor cancers. The Company has wholly owned subsidiaries in Boston, the U.K., the Netherlands and Germany. On August 28, 2020, the Company acquired Flaskworks, LLC (“Flaskworks”), a company that has developed a system designed to close and automate the manufacturing of cell therapy products such as DCVax®. On July 24, 2023, the Company’s wholly-owned subsidiary changed its name from Aracaris Ltd to Northwest Biotherapeutics Limited.

The Company relies upon contract manufacturers for production of its DCVax products, research and development services, distribution and logistics, and related services, in compliance with the Company’s specifications and the applicable regulatory requirements.

The Company has completed a Phase 3 clinical trial of its DCVax®-L product for glioblastoma brain cancer, has publicly reported the results in a peer reviewed publication in a medical journal as well as at a medical conference, and is working on prerequisites and preparations for filing an application for regulatory approval of the product.

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Financial Condition, Going Concern and Management Plans

6 Months Ended

Jun. 30, 2023

Financial Condition, Going Concern and Management Plans

Financial Condition, Going Concern and Management Plans

2. Financial Condition, Going Concern and Management Plans

The Company has incurred annual net operating losses since its inception. The Company had a net loss of $25.1 million for the six months ended June 30, 2023. The Company used approximately $22.8 million of cash in its operating activities during the six months ended June 30, 2023.

The Company does not expect to generate material revenue in the near future from the sale of products and is subject to all of the risks and uncertainties that are typically faced by biotechnology companies that devote substantially all of their efforts to research and development (“R&D”) and clinical trials and do not yet have commercial products. The Company expects to continue incurring annual losses for the foreseeable future. The Company’s existing liquidity is not sufficient to fund its operations, anticipated capital expenditures, working capital and other financing requirements until the Company reaches significant revenues. Until that time, the Company will need to obtain additional equity and/or debt financing, especially if the Company experiences downturns in its business that are more severe or longer than anticipated, or if the Company experiences significant increases in expense levels resulting from being a publicly-traded company or from expansion of operations. If the Company attempts to obtain additional equity or debt financing, the Company cannot assume that such financing will be available to the Company on favorable terms, or at all.

Because of recurring operating losses and operating cash flow deficits, there is substantial doubt about the Company’s ability to continue as a going concern for at least one year from the date of this filing. The consolidated financial statements have been prepared assuming that the Company will continue as a going concern, however, they do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets, or the amounts and classification of liabilities that may result from the outcome of this uncertainty.

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2023

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

3. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated interim financial statements include the accounts of the Company and its subsidiaries. All intercompany balances and transactions have been eliminated. Certain immaterial reclassifications have been made to prior period amounts to conform to the current period presentation.

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with the accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Article 8 of Regulation S-X of the Securities and Exchange Commission (“SEC”) and on the same basis as the Company uses to prepare its annual audited consolidated financial statements. The condensed consolidated balance sheet as of June 30, 2023, condensed consolidated statements of operations and comprehensive loss for the three and six months ended June 30, 2023 and 2022, condensed consolidated statement of stockholders’ deficit for the three and six months ended June 30, 2023 and 2022, and the condensed consolidated statements of cash flows for the six months ended June 30, 2023 and 2022 are unaudited, but include all adjustments, consisting only of normal recurring adjustments, which the Company considers necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The results for the three and six months ended June 30, 2023 are not necessarily indicative of results to be expected for the year ending December 31, 2023 or for any future interim period. The condensed consolidated balance sheet at December 31, 2022 has been derived from audited financial statements; however, it does not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2022 and notes thereto included in the Company’s annual report on Form 10-K (the “2022 Annual Report”), which was filed with the SEC on February 28, 2023.

Use of Estimates

In preparing condensed consolidated financial statements in conformity with U.S. GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of expenses during the reporting period. Due to inherent uncertainty involved in making estimates, actual results reported in future periods may be affected by changes in these estimates.

On an ongoing basis, the Company evaluates its estimates and judgments, including valuing equity securities in share-based payment arrangements, estimating the fair value of financial instruments recorded as derivative liabilities, useful lives of depreciable assets, and whether impairment charges may apply. The Company bases its estimates on historical experience and on various other assumptions that it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the reported amounts of revenues and expenses that are not readily apparent from other sources. Actual results could differ from those estimates, particularly given the significant social and economic disruptions and uncertainties associated with the ongoing coronavirus pandemic (“COVID-19”) and the COVID-19 control responses.

Significant Accounting Policies

There have been no material changes in the Company’s significant accounting policies from those previously disclosed in the 2022 Annual Report other than those discussed below.

Sequencing

The Company adopted a sequencing policy under ASC 815-40-35 to determine if reclassification of contracts from equity to liabilities is necessary pursuant to ASC 815 due to the Company’s inability to demonstrate it has sufficient authorized shares. Certain contracts were classified as liabilities as the result of the instruments containing a potentially indeterminable number of shares and, most recently, due to the Company entering into agreements providing for the potential issuance of more shares than authorized. While temporary suspensions are in place to keep the potential exercises beneath the number authorized, certain instruments are classified as liabilities, after allocating available authorized shares on the basis of the earliest grant date of potentially dilutive instruments. Pursuant to ASC 815, issuance of stock-based awards to the Company’s employees, nonemployees or directors are not subject to the sequencing policy.

On January 9, 2023, the Company filed a Certificate of Amendment of its Seventh Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of the State of Delaware, which effected an increase in the Company’s authorized shares of common stock, from 1.2 billion to 1.7 billion, par value $0.001 per share. As a result of this increase in authorized shares, the liability-classified warrants were reclassified to equity. Approximately 141 million warrants, with a value of approximately $76.3 million, to purchase shares of the Company’s common stock were reclassified from liabilities to equity on January 9, 2023. The remaining balance of $1.1 million in warrant liability as of June 30, 2023 was related to certain conditional rights to independently purchase shares from the Company in a future raise of capital (the “Piggy-back Rights”).

Modification of Equity Classified Warrants

A change in the terms or conditions of a warrant is accounted for as a modification. For a warrant modification accounted for under ASC 815, the effect of a modification shall be measured as the difference between the fair value of the modified warrant and the fair value of the original warrant immediately before its terms are modified, with each measured on the modification date. The accounting for incremental fair value of the modified warrants over the original warrants is based on the specific facts and circumstances related to the modification. When a modification is directly attributable to an equity offering, the incremental change in fair value of the warrants is accounted for as an equity issuance cost. When a modification is directly attributable to a debt offering, the incremental change in fair value of the warrants is accounted for as a debt discount or debt issuance cost. For all other modifications, the incremental change in fair value is recognized as a deemed dividend.

Recently Issued Accounting Standards Not Yet Adopted

Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions

In June 2022, the FASB issued ASU 2022-03, ASC Subtopic 820 “Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions”. The FASB is issuing this Update (1) to clarify the guidance in Topic 820, Fair Value Measurement, when measuring the fair value of an equity security subject to contractual restrictions that prohibit the sale of an equity security, (2) to amend a related illustrative example, and (3) to introduce new disclosure requirements for equity securities subject to contractual sale restrictions that are measured at fair value in accordance with Topic 820.

For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance.

The Company is still evaluating the impact of this pronouncement on the consolidated financial statements.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2023

Fair Value Measurements

Fair Value Measurements

4. Fair Value Measurements

In accordance with ASC 820 (Fair Value Measurements and Disclosures), the Company uses various inputs to measure the fair value of liabilities related to certain outstanding warrants, certain embedded conversion features associated with convertible debt and the contingent payable to Cognate BioServices on a recurring basis to determine the fair value of these liabilities. ASC 820 establishes a hierarchy categorizing inputs into three levels used to measure and disclose fair value. The hierarchy gives the highest priority to quoted prices available in active markets and the lowest priority to unobservable inputs. An explanation of each level in the hierarchy is described below:

Level 1 - Unadjusted quoted prices in active markets for identical instruments that are accessible by the Company on the measurement date.

Level 2 - Quoted prices in markets that are not active or inputs which are either directly or indirectly observable.

Level 3 - Unobservable inputs for the instrument requiring the development of assumptions by the Company.

The following table classifies the Company’s liabilities measured at fair value on a recurring basis into the fair value hierarchy as of June 30, 2023 and December 31, 2022 (in thousands):

	Fair value measured at June 30, 2023
			Quoted prices in active		Significant other		Significant
	Fair value at		markets		observable inputs		unobservable inputs
	June 30, 2023		(Level 1)		(Level 2)		(Level 3)
Warrant liability	$	1,083	$	—	$	—	$	1,083
Contingent payable derivative liability		8,706		—		—		8,706
Share liability		223		—		—		223
Total fair value	$	10,012	$	—	$	—	$	10,012

	Fair value measured at December 31, 2022
			Quoted prices in active		Significant other		Significant
	Fair value at		markets		observable inputs		unobservable inputs
	December 31, 2022		(Level 1)		(Level 2)		(Level 3)
Warrant liability	$	80,559	$	—	$	—	$	80,559
Embedded redemption option		807		—		—		807
Contingent payable derivative liability		8,668		—		—		8,668
Share liability		678		—		—		678
Total fair value	$	90,712	$	—	$	—	$	90,712

There were no transfers between Level 1, 2 or 3 during the six-month period ended June 30, 2023.

The following table presents changes in Level 3 liabilities measured at fair value for the six-month period ended June 30, 2023. Both observable and unobservable inputs were used to determine the fair value of positions that the Company has classified within the Level 3 category. Unrealized gains and losses associated with liabilities within the Level 3 category include changes in fair value that were attributable to both observable (e.g., changes in market interest rates) and unobservable (e.g., changes in unobservable long- dated volatilities) inputs (in thousands).

	Warrant			Embedded		Contingent Payable		Share
	Liability			Redemption Option		Derivative Liability		Liability		Total
Balance - January 1, 2023	$	80,559		$	807	$	8,668	$	678	$	90,712
Additional share liability		—			—		—		663		663
Redemption of share liability		—			—		—		(1,071)		(1,071)
Reclassification of warrant liabilities		(76,258)			—		—		—		(76,258)
Change in fair value		(3,218)			(807)		38		(47)		(4,034)
Balance - June 30, 2023	$	1,083	(1)	$	—	$	8,706	$	223	$	10,012

(1) The remaining balance of $1.1 million in warrant liability as of June 30, 2023 was related to certain conditional rights to independently purchase shares from the Company in a future raise of capital (the “Piggy-back Rights”). The Company accounted for the Piggy-back Rights as a freestanding financial instrument, which was classified as a liability at fair value on the Condensed Consolidated Balance Sheet

On January 9, 2023, the Company reclassified the fair value of the warrant liability of $76.3 million into the additional paid-in capital. The change in fair value of the common stock warrant liability of $2.3 million between December 31, 2022 and January 9, 2023 is reflected in “Change in fair value of derivative liabilities” in the accompanying condensed consolidated statements of comprehensive loss for the six months ended June 30, 2023.

A summary of the weighted average (in aggregate) significant unobservable inputs (Level 3 inputs) used in measuring the Company’s warrant liabilities and embedded conversion feature that are categorized within Level 3 of the fair value hierarchy as of June 30, 2023, January 9, 2023 (the reclassification date) and December 31, 2022 is as follows:

	As of June 30, 2023						As of January 9, 2023
	Share			Contingent Payable			Warrant
	Liability			Derivative Liability			Liability
Strike price	$	0.60		$	0.57	*	$	0.31
Contractual term (years)		0.07			1.24			1.46
Volatility (annual)		60	%		61	%		87	%
Risk-free rate		4.3	%		5.5	%		4.3	%
Dividend yield (per share)		0	%		0	%		0	%

	As of December 31, 2022
	Warrant			Share			Contingent Payable
	Liability			Liability			Derivative Liability
Strike price	$	0.31		$	0.78	*	$	0.78	*
Contractual term (years)		1.5			0.1			0.6
Volatility (annual)		86	%		76	%		77	%
Risk-free rate		4.3	%		2.0	%		4.8	%
Dividend yield (per share)		0	%		0	%		0	%

* The strike price assumes the current stock price as of June 30, 2023 and December 31, 2022

The key unobservable inputs for Piggy-back rights that was included in the warrant liability as of June 30, 2023 and December 31, 2022 was the assumption of the estimated remaining life which was based on the estimate of the next qualified financing.

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Stock-based Compensation

6 Months Ended

Jun. 30, 2023

Stock-based Compensation

Stock-based Compensation

5. Stock-based Compensation

The following table summarizes total stock-based compensation expense for the three and six months ended June 30, 2023 and 2022 (in thousands).

	For the three months ended				For the six months ended
	June 30,				June 30,
	2023		2022		2023		2022
Research and development	$	147	$	641	$	444	$	1,151
Research and development - related party
Milestones achieved (1)		—		1,410		520		1,410
Future milestones (2)		40		3,930		140		3,930
General and administrative		90		(218)		107		(111)
Total stock-based compensation expense	$	277	$	5,763	$	1,211	$	6,380

The related party amounts were for milestone incentives that either were earned or are deemed probable to be achieved in the future and become issuable at that time (as detailed below in Restricted Stock Awards).

(1) During the six months ended June 30, 2023, the Company recognized the remaining $0.5 million stock-based compensation related to the achieved milestone (obtaining a commercial manufacturing license from the MHRA). The Company had previously recognized $1.6 million stock-based compensation as of December 31, 2022.

The $1.4 million expense recognized in 2022 covers 2 one-time milestones: 2 required licenses for the Sawston facility (licenses from the Human Tissue Authority and from the MHRA for manufacturing for clinical trials and compassionate use cases).

(2) During the three and six months ended June 30, 2023, the Company recognized and expensed (but did not issue shares for) the pro-rata portion of the remaining one-time milestone stock awards for drafting key portions of the application for product approval of $40,000 and $140,000, respectively.

During the three and six months ended June 30, 2022, the Company recognized and expensed (but did not issue shares for) the pro-rata portion of 6 one-time milestones: 5 workstreams (Comparability, Stability, Potency, Product Profile and Fill/Finish) and one-time milestone for drafting key portions of the application for product approval of $3.9 million and $3.9 million, respectively.

The total unrecognized stock compensation cost was approximately $0.5 million as of June 30, 2023 and will be recognized over the next 1.5 years.

Stock Options

The following table summarizes stock option activity for the Company’s option plans during the six months ended June 30, 2023 (amount in thousands, except per share number):

				Weighted Average
		Weighted		Remaining
	Number of	Average		Contractual Life	Total Intrinsic
	Shares	Exercise Price		(in years)	Value
Outstanding as of January 1, 2023	301,263	$	0.34	7.0	$	135,225
Cashless exercised	(1,827)		0.41	—		—
Outstanding as of June 30, 2023	299,436	$	0.33	6.5	$	73,083
Options vested (1)	281,278	$	0.33	6.5	$	69,223

(1) An aggregate 153 million stock options held by Ms. Linda Powers, the Company’s Chief Executive Officer, and Mr. Leslie Goldman, the Company’s Senior Vice President, are subject to an agreement (the “Blocker Letter Agreement”) under which they cannot exercise any options or warrants except upon at least 61 days’ prior notice.

Restricted Stock Awards

During April 2022, the Company’s Board approved, and the Company entered into a Statement of Work #6 (the “SOW 6”) with Advent BioServices, a related party of the Company, for five workstreams that are prerequisites for an application for regulatory approval of DCVax-L, for three required licenses for the Sawston facility , and for drafting of key portions of the application for approval. The SOW provides for baseline costs and for milestone incentives for successful completion of each of the workstreams, for the completion and submission of each application for product approval, and for obtaining regulatory approval of each of the three Sawston licenses. The milestone incentives will be a combination of cash and stock and are not paid until they are achieved. On September 26, 2022, the Company amended the SOW6 (the “Amended SOW6”) to (1) extend the service period through September 30, 2023, and (2) clarify the assessment and application of the milestones, and (3) add a sixth workstream. (The potential cost for all unearned stock awards for milestones not yet achieved was re-measured on the modification date and will be further re-measured until the date the milestone award is achieved and the stock awards are earned.) If all of the 10 one-time milestones are achieved (i.e., for all six workstreams that are prerequisites for an application for product approval, for obtaining all three licenses required for the Sawston facility, and for the completion of key portions of the application for product approval), the aggregate stock-based compensation under the Amended SOW 6 will be 13.5 million shares (including the shares already earned and issued for the milestones already achieved) for an aggregate fair value of $10.1 million.

As of December 31, 2022, seven milestones were completed, including five of the workstreams, and the regulatory approvals of two licenses required for the Sawston facility. An eighth milestone was partly completed and the stock component of that milestone was earned, but the cash portion of that eighth milestone was not yet earned.

During the six months ended June 30, 2023, the eighth milestone workstream for Mechanism of Action and the milestone for obtaining the commercial manufacturing license from the MHRA were completed. For this manufacturing license milestone, the Company

recognized the remaining $0.5 million in expense in the condensed consolidated statements of operations and comprehensive loss and issued 3.0 million common shares.

For the remaining one-time milestone that is anticipated to be achieved and earned in the future, the Company recognized and expensed (but did not issue) the pro-rata portion of the remaining potential milestone stock awards during the three and six months ended June 30, 2023, of $40,000 and $0.1 million, respectively.

Other Service Agreement

On March 16, 2023, the Company issued 8,000 shares of Series C convertible preferred stock to an unrelated vendor who provided professional services for the Company. The fair value of the Series C convertible preferred stock on the issuance date was approximately $0.1 million, which will be expensed over a four-month service period. During the three and six months ended June 30, 2023, the Company recognized approximately $89,000 and $0.1 million, respectively as part of general and administrative expenses.

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Property, Plant and Equipment

6 Months Ended

Jun. 30, 2023

Property, Plant and Equipment

Property, Plant and Equipment

6. Property, Plant and Equipment

Property, plant and equipment consist of the following at June 30, 2023 and December 31, 2022 (in thousands):

	June 30,		December 31,		Estimated
	2023		2022		Useful Life
Leasehold improvements	$	17,250	$	13,070	Lesser of lease term or estimated useful life
Office furniture and equipment		455		300	3-5 years
Computer and manufacturing equipment and software		2,495		2,238	3-5 years
Land in the United Kingdom		86		82	NA
		20,286		15,690	NA
Less: accumulated depreciation		(3,000)		(2,272)
Total property, plant and equipment, net	$	17,286	$	13,418
Construction in progress	$	—	$	2,028

The construction works related to expanding the operational portion of its UK facility (Phase 1B) were completed and placed in service as of June 30, 2023. All costs associated with the Phase 1B build out were reclassified from construction in progress to leasehold improvements effective June 2023 and are being amortized over the estimated useful life of the facility.

Depreciation expense was approximately $0.7 million and $0.6 million for the six months ended June 30, 2023, and 2022, respectively.

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Outstanding Debt

6 Months Ended

Jun. 30, 2023

Outstanding Debt

Outstanding Debt

7. Outstanding Debt

The following two tables summarize outstanding debt as of June 30, 2023 and December 31, 2022, respectively (amount in thousands):

		Stated
		Interest			Conversion					Remaining		Carrying
	Maturity Date	Rate			Price			Face Value		Debt Discount		Value
Short term convertible notes payable
6% unsecured	Due		6	%	$	3.09		$	135	$	—	$	135
8% unsecured	1/31/2024		8	%		0.55	*		900		(177)		723
8% unsecured	6/30/2024		8	%		0.50	*		1,000		—		1,000
									2,035		(177)		1,858
Short term notes payable
8% unsecured	Various		8	%		N/A			8,253		(413)		7,840
12% unsecured	On Demand		12	%		N/A			562		—		562
									8,815		(413)		8,402
Long term notes payable
8% unsecured	7/26/2024		8	%		N/A			16,117		(1,121)		14,996
6% secured	3/25/2025		6	%		N/A			748		—		748
									16,865		(1,121)		15,744
Ending balance as of June 30, 2023								$	27,715	$	(1,711)	$	26,004

*The 8% convertible notes are convertible into Series C preferred shares at $12.50 - $13.75 per share. Each Series C preferred share is convertible into common shares with 30 days’ restriction period. The conversion price in common share equivalent is at $0.50 and $0.55 per share.

		Stated									Embedded
		Interest			Conversion				Remaining		Redemption		Carrying
	Maturity Date	Rate			Price		Face Value		Debt Discount		Option		Value
Short term convertible notes payable
6% unsecured	Due		6	%	$	3.09	$	135	$	—	$	—	$	135
								135		—		—		135
Short term notes payable
8% unsecured	Various		8	%		N/A		14,540		(1,300)		807		14,047
9% unsecured	Various		9	%		N/A		793		—		—		793
12% unsecured	On Demand		12	%		N/A		563		—		—		563
								15,896		(1,300)		807		15,403
Long term notes payable
8% unsecured	7/26/2024		8	%		N/A		5,505		(432)		—		5,073
6% secured	3/25/2025		6	%		N/A		918		—		—		918
								6,423		(432)		—		5,991
Ending balance as of December 31, 2022							$	22,454	$	(1,732)	$	807	$	21,529

On March 2, 2023, the Company entered into a Commercial Loan Agreement (the “Commercial Loan”) with a commercial lender for an aggregate principal amount of $11.0 million. The Commercial Loan bears interest at 8% per annum with a 22-month term. There are no principal repayments during the first eight months of the term. The Commercial Loan is amortized in 14 installments starting on November 2, 2023. The Commercial Loan carries an original issue discount of $1.0 million.

In April 2023, the Company entered into several ten-month convertible notes (the “April Convertible Notes”) with multiple investors (the “Holders”) with an aggregate principal amount of $0.9 million for a purchase price of $0.8 million. The April Convertible Notes bear interest at 8% per annum, and are convertible into Series C preferred shares at $13.75 per share at the Holders’ sole option. The Series C preferred shares are convertible into common stock 30 days after the debt conversion date. Each Series C preferred share is convertible into 25 shares of common stock. The Company reclassed $0.7 million Investor advances that was received from the Holders in December 2022 to Convertible notes payable on the condensed consolidated balance sheet as of June 30, 2023. As a result, the Company received net cash proceeds of $0.1 million.

As consideration for entering into the convertible note agreements, the Company also agreed to amend the investors’ existing outstanding warrants. The exercise price of certain warrants was amended from $2.00 per share to $0.55 per share, and the maturity date was extended for additional 9 months. The incremental change in fair value resulting from the amendment was approximately $0.2 million, which was recognized as an additional debt discount to the April Convertible Notes.

On June 30, 2023, the Company entered into a one-year convertible note (the “June Convertible Note”) with an individual investor (the “Holder”) with an aggregate principal amount of $1.0 million. The Company received $1.0 million cash from the June Convertible Note. The June Convertible Note bears interest at 8% per annum, and is convertible into Series C preferred shares at $12.50 per share at the Holder's sole option. The Series C preferred shares are convertible into common stock 30 days after the debt conversion date. Each Series C preferred share is convertible into 25 shares of common stock.

During the six months ended June 30, 2023, the Company issued approximately 15.2 million shares of common stock with a fair value of $9.6 million to certain lenders in lieu of cash payments of $7.4 million of debt, including $0.7 million of accrued interest. In addition, pursuant to exchange agreements executed with various holders, the Company is required to potentially issue additional common stock (the “Share liability”) if the stock price is less than the price defined in the exchange agreement as of the true-up date. During the six months ended June 30, 2023, the Company extinguished Share liabilities of $1.1 million and recognized an additional $0.7 million in Share liabilities. The Company recognized an approximately $1.8 million debt extinguishment loss during the six months ended June 30, 2023 from the debt redemption.

During the six months ended June 30, 2023, the Company recognized $0.8 million change in fair value of embedded redemption option as this embedded feature had de minimis value based on the remaining life of the note and the next qualified financing.

During the six months ended June 30, 2023, the Company issued approximately 56,000 shares of Series C preferred stock with a fair value of $1.0 million to certain lenders in lieu of cash payments of $0.9 million in debt, including $0.1 million of accrued interest. The Company recognized an approximately $0.1 million debt extinguishment loss.

For the three months ended June 30, 2023 and 2022, interest expense related to outstanding debt totaled approximately $1.3 million and $1.4 million including amortization of debt discounts totaling $0.7 million and $0.7 million, respectively.

For the six months ended June 30, 2023 and 2022, interest expense related to outstanding debt totaled approximately $2.3 million and $3.3 million including amortization of debt discounts totaling $1.3 million and $1.5 million, respectively.

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Net Loss per Share Applicable to Common Stockholders

6 Months Ended

Jun. 30, 2023

Net Loss per Share Applicable to Common Stockholders

Net Loss per Share Applicable to Common Stockholders

8. Net Loss per Share Applicable to Common Stockholders

Basic loss per common share is computed by dividing net loss by the weighted average number of common shares outstanding during the reporting period. Diluted loss per common share would be computed similar to basic loss per common share except that it reflects the potential dilution that could occur if dilutive securities or other obligations to issue common stock were exercised or converted into common stock. Because of the net loss from operations for each period, inclusion of such securities in the computation of loss per share would be anti-dilutive and thus they are excluded. Potentially dilutive weighted average common shares include common stock potentially issuable under the Company’s convertible notes and preferred stock, warrants and vested and unvested stock options.

The following securities were not included in the diluted net loss per share calculation because their effect was anti-dilutive as of the periods presented (in thousands):

	For the six months ended
	June 30,
	2023	2022
Series C convertible preferred stock	38,638	—
Common stock options	299,436	309,512
Common stock warrants	117,863	153,110
Convertible notes and accrued interest	3,748	76
Potentially dilutive securities	459,685	462,698

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Related Party Transactions

6 Months Ended

Jun. 30, 2023

Related Party Transactions

Related Party Transactions

9. Related Party Transactions

The Company had three operational programs with Advent: (a) an ongoing manufacturing program at the GMP facility in London, (b) an ongoing development and manufacturing program at the Sawston GMP facility, and (c) a one-time program for specialized work, organized into 10 sets of one-time milestones, for the following:

● Qualifying for and obtaining 3 required licenses for the Sawston facility: a license from the Human Tissue Authority to collect and process human cells and tissues, a license from the MHRA for manufacturing for clinical trials and compassionate use cases, and a license from the MHRA for commercial manufacturing.

● 6 workstreams relating to product matters required for an application for regulatory approval of DCVax-L, including Comparability, Stability, Potency, Product Profile, Mechanism of Action and Fill/Finish.

● Drafting of key portions of the application for product approval itself.

Each of the three operational programs is covered by a separate contract. The ongoing manufacturing in the London facility is covered by a Manufacturing Services Agreement (“MSA”) entered into on May 14, 2018. The development and manufacturing program at the Sawston facility is covered by an Ancillary Services Agreement entered into on November 18, 2019. The specialized work associated with the 10 one-time milestones is covered by an SOW 6 entered into under the Ancillary Services Agreement as of April 1, 2022 and amended on September 26, 2022.

The Ancillary Services Agreement establishes a structure under which the Company and Advent negotiate and agree upon the scope and terms for Statements of Work (“SOWs”) for facility development activities and compassionate use program activities. After an SOW is agreed and approved by the Company, Advent will proceed with, or continue, the applicable services and will invoice the Company pursuant to the SOW. Since both the facility development and the compassionate use program involve pioneering and uncertainties in most aspects, the invoicing under the Ancillary Services Agreement is on the basis of costs incurred plus fifteen percent. The SOWs may involve ongoing activities or specialized one-time projects and related one-time milestone payments. The current Ancillary Services Agreement ended in September 2023. The Company subsequently extended the term by 12 months to July 2024 with no other changes.

SOW 6 provides for ongoing baseline costs for manufacturing at the Sawston facility and one-time milestone incentives for (a) regulatory approval of each of the 3 licenses required for the Sawston facility, (b) successful completion of each of the 6 workstreams and (c) completion of drafting key portions of an application for product approval. The milestone incentives are a combination of cash and stock, and are not paid until the milestone is achieved and earned.

During the six months ended June 30, 2023, the Company paid an aggregate of $2.0 million in cash, of which $1.0 million was related to two milestones that were completed and fully expensed but unpaid as of December 31, 2022, and the other $1.0 million was partial payment for one milestone (obtaining a commercial manufacturing license from the MHRA) that was completed as of March 20, 2023. The Company issued 3.0 million common shares as a result of completion of the one-time milestone (obtaining a commercial manufacturing license from the MHRA) at fair value of $2.1 million, of which $0.5 million was recognized during the six months ended June 30, 2023 and $1.6 million had already been recognized (but not paid) in 2022. During the six months ended June 30, 2023, the Company also expensed (but did not pay) an aggregate of $0.5 million related to completed cash milestone payments; the Company also expensed (but did not pay) an aggregate of $0.2 million related to future cash milestone payments that the Company anticipates will be

achieved and earned, and $0.1 million related to fair value of future shares milestone payments that the Company anticipates will be achieved and earned over the course of the contract period.

The following table summarizes total research and development costs from Advent for the three and six months ended June 30, 2023 and 2022, respectively (in thousands).

	For the three months ended				For the six months ended
	June 30,				June 30,
	2023		2022		2023		2022
Advent BioServices
Manufacturing cost in London	$	1,660	$	1,424	$	3,303	$	2,827
Manufacturing cost at Sawston facility		2,098		1,276		3,810		2,701
SOW 6 one-time milestones - Shares
Expensed and paid (milestone complete) (1)		—		1,410		520		1,410
Expensed but unpaid, not yet due (milestone not yet complete) (2)(3)		40		3,930		140		3,930
SOW 6 one-time milestones - Cash
Expensed and paid (milestone complete) (4)		—		500		—		500
Expensed and due, but unpaid (milestone complete) (5)		—		1,000		550		1,000
Expensed but unpaid, not yet due (milestone not yet complete) (6)		60		2,314		210		2,314
Total	$	3,858	$	11,854	$	8,533	$	14,682

(1) The payment for the six months ended June 30, 2023 covers the one-time milestone for obtaining a commercial manufacturing license from the MHRA. The payment for the six months ended June 30, 2022 also covers 2 other one-time milestones: 2 required licenses for the Sawston facility (licenses from the Human Tissue Authority and from the MHRA for manufacturing for clinical trials and compassionate use cases).

(2) The expense for the six months ended June 30, 2023 covers the one-time milestone for drafting key portions of the application for product approval.

(3) The expense for the six months ended June 30, 2022 covers 6 one-time milestones: 5 workstreams (Comparability, Stability, Potency, Product Profile and Fill/Finish) and 1 one-time milestone for drafting key portions of the application for product approval.

(4) This covers one-time milestone: a required license for the Sawston facility from the Human Tissue Authority.

(5) The expense for the six months ended June 30, 2023 covers the one-time milestone workstream: Mechanism of Action. The expense for the six months ended June 30, 2022 covers one-time milestone: a required license for the Sawston facility from the MHRA for manufacturing for clinical trials and compassionate use cases.

(6) The expense for the six months ended June 30, 2023 covers the one-time milestone for drafting key portions of the application for product approval. The expense for the six months ended June 30, 2022 covers 6 one-time milestones: 5 workstreams (Comparability, Stability, Potency, Product Profile and Fill/Finish) and one-time milestone for drafting key portions of the application for product approval.

Advent BioServices Sublease Agreement

On December 31, 2021, the Company entered into a Sub-lease Agreement (the “Agreement”) with Advent. The Agreement permits use by Advent of a portion of the space in the Sawston facility, which is leased by the Company under a separate head lease with a different counterparty (Huawei) that commenced on December 14, 2018. The Company subleased approximately 14,459 square feet of the 88,000 square foot building interior space, plus corresponding exterior support space and parking. The lease payments amount under the Agreement are two times the amount payable by the Company under the head lease (which is currently  £5.75 or approximately $7.28 per square foot based on exchange rate as of June 30, 2023), but subject to a cap of $10 per square foot. Accordingly, the monthly lease payments under the Sublease are based on $145,000 annually for 2023. The total lease payments paid by the Company to Huawei for the 88,000 square foot facility, exterior spaces and parking under the head lease are £500,000 (approximately $633,000) per year. The term of the Agreement shall end on the same date as the head lease term ends.

During the three and six months ended June 30, 2023, the Company recognized sub-lease income of $36,000 and $72,000, respectively.

Related Party Accounts Payable

As of June 30, 2023, there was approximately $0.2 million of unpaid board compensation to one of our Directors that was included in the accounts payable to related party on the condensed consolidated balance sheets.

As of June 30, 2023, there were outstanding unpaid accounts payable and accrued expenses owed to Advent as summarized in the following table (in thousands). These unpaid amounts are part of the Related Party expenses reported in the above section.

	June 30,		December 31,
	2023		2022
Advent BioServices - amount invoiced but unpaid	$	2,855	$	1,844
Advent BioServices - amount accrued but unpaid		3,496		4,736
Total payable and accrued, but unpaid to Advent BioServices	$	6,351	$	6,580

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Preferred Stock

6 Months Ended

Jun. 30, 2023

Preferred Stock.

Preferred Stock

10. Preferred Stock

Series C Convertible Preferred Stock

During the six months ended June 30, 2023, the Company entered into various Subscription Agreements (the “Series C Subscription Agreements”) with certain investors (the “Series C Investors”). Pursuant to the Series C Subscription Agreements, the Company issued the Series C Investors an aggregate of 0.3 million shares of the Company’s Series C convertible preferred stock, par value $0.001 per share (the “Series C Shares”), at a weighted purchase price of $14.69 per share for proceeds of approximately $4.8 million.

During the six months ended June 30, 2023, the Company issued approximately 56,000 Series C Shares with a fair value of $1.0 million to certain lenders in lieu of cash payments of $0.9 million in debt, including $0.1 million accrued interest. The Company recognized an approximately $0.1 million debt extinguishment loss.

During the six months ended June 30, 2023, approximately 0.3 million Series C Shares with a book value of $3.6 million were converted into 6.4 million common shares at a ratio of 1:25.

The Company determined that the Series C Shares contain contingent redemption provisions allowing redemption by the holder upon certain defined events (“deemed liquidation events”). As the event that may trigger the redemption of the Series C Shares is not solely within the Company’s control, the Series C Shares are classified as mezzanine equity (temporary equity) in the Company’s condensed consolidated balance sheets.

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Stockholders' Deficit

6 Months Ended

Jun. 30, 2023

Stockholders' Deficit

Stockholders' Deficit

11. Stockholders’ Deficit

Common Stock

On January 9, 2023, the Company filed a Certificate of Amendment of its Seventh Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of the State of Delaware, which effected an increase in the Company’s authorized shares of common stock, from 1.2  billion to 1.7 billion, par value $0.001 per share.

During the six months ended June 30, 2023, the Company received $2.8 million from the exercise of outstanding warrants with an exercise price between $0.153 and $0.85, of which $1.2 million was received in December 2022 as investor advances. The Company issued approximately 12.3 million shares of common stock upon these warrant exercises.

During the six months ended June 30, 2023, certain options and warrants holders elected to exercise some of their options and warrants pursuant to cashless exercise formulas. The Company issued approximately 9.9 million shares of common stock upon exercise of 10.6 million warrants and 1.5 million options at exercise prices between $0.20 and $0.35.

During the six months ended June 30, the Company issued approximately 15.2 million shares of common stock to certain lenders in lieu of cash payments on $7.4 million of outstanding debt, including $0.7 million interest, and settled $1.1 million true-up provision (see Note 7).

Stock Purchase Warrants

The following is a summary of warrant activity for the three months ended March 31, 2023 (dollars in thousands, except per share data):

	Number of	Weighted Average		Remaining
	Warrants	Exercise Price		Contractual Term
Outstanding as of January 1, 2023	141,048	$	0.31	1.16
Warrants exercised for cash	(12,320)		0.22	—
Cashless warrrants exercise	(10,615)		0.20	—
Warrants expired and cancellation	(250)		1.36	—
Outstanding as of June 30, 2023	117,863	$	0.31	1.72

The options and warrants held by Ms. Powers and Mr. Goldman are subject to an ongoing suspension on a rolling basis pursuant to the Blocker Letter Agreement.

At June 30, 2023, of the approximately 118 million total outstanding warrants listed above, approximately 98 million warrants were under the Blocker Letter Agreement or suspension agreements.

Warrant Modifications

Between January 10 and June 30, 2023, the Company amended multiple warrants whereby the maturity dates of certain warrants were extended for an additional approximately 3 months. The value of these modifications were calculated using the Black-Scholes-Merton option pricing model based on the following weighted average assumptions.

	Post-modification			Pre-modification
Exercise price	$	0.29		$	0.30
Expected term (in years)		1.9			1.6
Volatility		70	%		72	%
Risk-free interest rate		4.7	%		4.6	%
Dividend yield		0	%		0	%

The incremental fair value attributable to the modified awards compared to the original awards immediately prior to the modification was calculated at $1.1 million, of which $0.2 million was associated with debt financing and was recognized as an additional debt discount (see Note 7), and the remaining $0.9 million was treated as a deemed dividend and is reflected as “Deemed dividend related to warrant modifications” in the accompanying condensed consolidated statement of operations and comprehensive loss.

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2023

Commitments and Contingencies.

Commitments and Contingencies

12. Commitments and Contingencies

Operating Lease- Lessee Arrangements

The Company has operating leases for corporate offices in the U.S. and U.K., and for manufacturing facilities in the U.K. Leases with an initial term of 12 months or less are not recorded in the balance sheet. The Company has elected the practical expedient to account for each separate lease component of a contract and its associated non-lease components as a single lease component, thus causing all fixed payments to be capitalized. The Company also elected the package of practical expedients permitted within the new standard, which among other things, allows the Company to carry forward historical lease classification. The lease renewal options have not been included in the calculation of the lease liabilities and right-of-use (“ROU”) assets as the Company has not yet determined whether to exercise the options. Variable lease payment amounts that cannot be determined at the commencement of the lease such as increases in lease payments based on changes in index rates or usage, are not included in the ROU assets or liabilities. These are expensed as incurred and recorded as variable lease expense.

At June 30, 2023, the Company had operating lease liabilities of approximately $4.8 million for both the 20-year lease of the building for the manufacturing facility in Sawston, U.K., and the current office lease in the U.S. and ROU assets of approximately $4.2 million for the Sawston lease and U.S. office lease are included in the condensed consolidated balance sheet.

The following summarizes quantitative information about the Company’s operating leases (amount in thousands):

	For the six months ended
	June 30, 2023
	U.K			U.S			Total
Lease cost
Operating lease cost	$	293		$	124		$	417
Short-term lease cost		49			—			49
Variable lease cost		—			7			7
Sub-lease income		(72)			—			(72)
Total	$	270		$	131		$	401
Other information
Operating cash flows from operating leases	$	(308)		$	(148)		$	(457)
Weighted-average remaining lease term – operating leases		8.2			0.9
Weighted-average discount rate – operating leases		12	%		12	%

	For the Six Months ended
	June 30, 2022
	U.K			U.S			Total
Lease cost
Operating lease cost	$	309		$	130		$	439
Short-term lease cost		34			—			34
Variable lease cost		—			12			12
Total		(73)			—			(73)
	$	270		$	142		$	412
Other information
Operating cash flows from operating leases	$	(325)		$	(144)		$	(469)
Weighted-average remaining lease term – operating leases		8.7			1.5
Weighted-average discount rate – operating leases		12	%		12	%

The Company recorded lease costs as a component of general and administrative expense during the six months ended June 30, 2023 and 2022, respectively.

Maturities of our operating leases, excluding short-term leases and sublease agreement, are as follows:

Six months ended December 31, 2023	$	466
Year ended December 31, 2024		838
Year ended December 31, 2025		633
Year ended December 31, 2026		633
Year ended December 31, 2027		633
Thereafter		6,947
Total		10,151
Less present value discount		(5,397)
Operating lease liabilities included in the Condensed Consolidated Balance Sheet at June 30, 2023	$	4,754

Maturities of our operating leases under the sublease agreement, are as follows:

Six months ended December 31, 2023	$	73
Year ended December 31, 2024		145
Year ended December 31, 2025		145
Year ended December 31, 2026		145
Thereafter		1,740
Total	$	2,248

Advent BioServices Services Agreement

On May 14, 2018, the Company entered into a DCVax®-L Manufacturing and Services Agreement (“MSA”) with Advent BioServices, a related party which was formerly part of Cognate BioServices and was spun off separately as part of an institutional financing of Cognate. The MSA provides for manufacturing of DCVax-L products at an existing facility in London. The MSA is structured in the same manner as the Company’s prior agreements with Cognate BioServices. The MSA provides for certain payments for achievement of milestones and, as was the case under the prior agreement with Cognate BioServices, the Company is required to pay certain fees for dedicated production capacity reserved exclusively for DCVax production and pay for manufacturing of DCVax-L products for a certain minimum number of patients, whether or not the Company fully utilizes the dedicated capacity and number of patients. The MSA remains in force until five years after the first commercial sales of DCVax-L products pursuant to a marketing authorization, accelerated approval or other commercial approval, unless cancelled. Either party may terminate the MSA on twelve months’ notice, to allow for transition arrangements by both parties. During the notice period services would still be provided. Minimum required payments for this notice period are anticipated to total approximately £4.4 million ($5.6 million).

The Company entered into SOW 6 with Advent, which was incorporated into the Ancillary Services Agreement on April 1, 2022 and amended it on September 26, 2022. The milestone incentives involve a combination of cash and stock and are not paid until they are achieved and earned, as described in Note 9.

German Tax Matter

The German tax authorities have audited our wholly owned subsidiary, NW Bio GmbH, for 2013-2015 and assessed additional tax against the subsidiary. NW Bio GmbH submitted substantial documentation to refute certain aspects of the assessments and the German tax authorities agreed in principle with the Company’s proposed revised approach and settlement offer. A final settlement bill was received from the German Tax Authority confirming that only a portion of the original bill was owed, €277,000 (approximately $329,000), for corporate taxes, interest, and reduced penalty for the period under audit, which the Company paid on September 2, 2021. The Company also received and paid the final settlement bill from the local authority for trade taxes for the audit period in the amount of €231,000 (approximately $251,000). On November 4, 2021, the Company received a letter from the local tax authorities asking for additional late fees of €513,000 (now approximately $558,000) on reimbursable withholding taxes that had been waived during the settlement process. On December 8, 2021, the Company appealed the assessment of additional late fees. Additionally, the Company requested that NW Bio GmbH be deregistered from the trade register, as it no longer had current operations. The deregistration was granted effective December 31, 2021. Between January 2022 and July 2022, the Company received tax bills for the corporate and trade taxes for the 2016-2020 tax years that totaled approximately €222,000 (approximately $241,000). On July 27, 2022, the Company was informed that the German Tax Authorities were prepared to waive €135,000 (approximately $147,000) of the penalties. The Company offered to pay this reduced penalty if an extended payment plan was approved. A response was received dated November 14, 2022 indicating that the tax authority would not be able to grant a further deferral of payment of these penalties. In a letter dated December 27, 2022, the Leipzig tax authority sent letters to the former and current managing directors of NW Bio GmbH giving 30 days to respond to a tax liability questionnaire. Based on the responses to the liability questionnaires the tax authorities have currently not directed any further measures against former and current managing directors of NW Bio GmbH with respect to tax liability proceedings. The Company currently has accrued for the current amounts owed for these penalties of €377,000 (approximately $410,000) as well as for all unpaid taxes as of June 30, 2023. Based on the Company’s current operating state in Germany and the negotiations, the Company believes, based on its evaluation under ASC 740, that the resolution of these tax matters will not likely result in a net material charge to the Company.

Other Contingent Payment Obligation

Between May and June 2023, the Company entered into certain non-dilutive funding agreements with multiple investors, pursuant to which the Company received funding of $4.1 million related to a gain contingency. These agreements are accounted for under ASC 470 and are recognized as contingent payment obligations on the Company’s condensed consolidated balance sheet. The Company’s payment obligations only apply when such are received by the Company.

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Subsequent Events

6 Months Ended

Jun. 30, 2023

Subsequent Events

Subsequent Events

13. Subsequent Events

Between July 1, 2023 and August 9, 2023, the Company received $2.1 million in funding from the sale of preferred shares and proceeds of debt arrangements and proceeds related to a gain contingency.

Between July 1, 2023 and August 9, 2023, the Company issued approximately 84,000 shares of Series C preferred stock for proceeds of $1.1 million.

In July 2023, approximately 24,000 Series C Shares with a book value of $0.4 million were converted into 0.6 million common shares in accordance with their terms at a ratio of 1:25.

Between July and August 2, 2023, the Company issued approximately 4.9 million shares of common stock to a lender in lieu of cash payments on $2.5 million of outstanding debt, including $0.1 million interest. The Company also issued 0.3 million shares of common stock to that lender to extinguish $0.2 million Share liability.

On July 11, 2023, the Company entered into a one-year convertible note (the “July Convertible Note”) with an individual investor (the “Holder”) with an aggregate principal amount of $0.5 million. The Company received $0.5 million cash from the July Convertible Note. The July Convertible Note bears interest at 10% per annum, and is convertible into Series C preferred shares at $12.50 per share at the Holder’s sole option. The Series C preferred shares are convertible into common stock 30 days after the debt conversion date. Each Series C preferred share is convertible into 25 shares of common stock.

Between July 1, 2023 and August 9, 2023, the Company received $0.5 million in additional non-dilutive funding related to a gain contingency.

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2023

Summary of Significant Accounting Policies

Basis of Presentation

Basis of Presentation

The accompanying unaudited condensed consolidated interim financial statements include the accounts of the Company and its subsidiaries. All intercompany balances and transactions have been eliminated. Certain immaterial reclassifications have been made to prior period amounts to conform to the current period presentation.

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with the accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Article 8 of Regulation S-X of the Securities and Exchange Commission (“SEC”) and on the same basis as the Company uses to prepare its annual audited consolidated financial statements. The condensed consolidated balance sheet as of June 30, 2023, condensed consolidated statements of operations and comprehensive loss for the three and six months ended June 30, 2023 and 2022, condensed consolidated statement of stockholders’ deficit for the three and six months ended June 30, 2023 and 2022, and the condensed consolidated statements of cash flows for the six months ended June 30, 2023 and 2022 are unaudited, but include all adjustments, consisting only of normal recurring adjustments, which the Company considers necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The results for the three and six months ended June 30, 2023 are not necessarily indicative of results to be expected for the year ending December 31, 2023 or for any future interim period. The condensed consolidated balance sheet at December 31, 2022 has been derived from audited financial statements; however, it does not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2022 and notes thereto included in the Company’s annual report on Form 10-K (the “2022 Annual Report”), which was filed with the SEC on February 28, 2023.

Use of Estimates

Use of Estimates

In preparing condensed consolidated financial statements in conformity with U.S. GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of expenses during the reporting period. Due to inherent uncertainty involved in making estimates, actual results reported in future periods may be affected by changes in these estimates.

On an ongoing basis, the Company evaluates its estimates and judgments, including valuing equity securities in share-based payment arrangements, estimating the fair value of financial instruments recorded as derivative liabilities, useful lives of depreciable assets, and whether impairment charges may apply. The Company bases its estimates on historical experience and on various other assumptions that it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the reported amounts of revenues and expenses that are not readily apparent from other sources. Actual results could differ from those estimates, particularly given the significant social and economic disruptions and uncertainties associated with the ongoing coronavirus pandemic (“COVID-19”) and the COVID-19 control responses.

Significant Accounting Policies

Significant Accounting Policies

There have been no material changes in the Company’s significant accounting policies from those previously disclosed in the 2022 Annual Report other than those discussed below.

Sequencing

Sequencing

The Company adopted a sequencing policy under ASC 815-40-35 to determine if reclassification of contracts from equity to liabilities is necessary pursuant to ASC 815 due to the Company’s inability to demonstrate it has sufficient authorized shares. Certain contracts were classified as liabilities as the result of the instruments containing a potentially indeterminable number of shares and, most recently, due to the Company entering into agreements providing for the potential issuance of more shares than authorized. While temporary suspensions are in place to keep the potential exercises beneath the number authorized, certain instruments are classified as liabilities, after allocating available authorized shares on the basis of the earliest grant date of potentially dilutive instruments. Pursuant to ASC 815, issuance of stock-based awards to the Company’s employees, nonemployees or directors are not subject to the sequencing policy.

On January 9, 2023, the Company filed a Certificate of Amendment of its Seventh Amended and Restated Certificate of Incorporation (the “Certificate of Amendment”) with the Secretary of the State of Delaware, which effected an increase in the Company’s authorized shares of common stock, from 1.2 billion to 1.7 billion, par value $0.001 per share. As a result of this increase in authorized shares, the liability-classified warrants were reclassified to equity. Approximately 141 million warrants, with a value of approximately $76.3 million, to purchase shares of the Company’s common stock were reclassified from liabilities to equity on January 9, 2023. The remaining balance of $1.1 million in warrant liability as of June 30, 2023 was related to certain conditional rights to independently purchase shares from the Company in a future raise of capital (the “Piggy-back Rights”).

Modification of Equity Classified Warrants

Modification of Equity Classified Warrants

A change in the terms or conditions of a warrant is accounted for as a modification. For a warrant modification accounted for under ASC 815, the effect of a modification shall be measured as the difference between the fair value of the modified warrant and the fair value of the original warrant immediately before its terms are modified, with each measured on the modification date. The accounting for incremental fair value of the modified warrants over the original warrants is based on the specific facts and circumstances related to the modification. When a modification is directly attributable to an equity offering, the incremental change in fair value of the warrants is accounted for as an equity issuance cost. When a modification is directly attributable to a debt offering, the incremental change in fair value of the warrants is accounted for as a debt discount or debt issuance cost. For all other modifications, the incremental change in fair value is recognized as a deemed dividend.

Recently Issued Accounting Standards Not Yet Adopted

Recently Issued Accounting Standards Not Yet Adopted

Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions

In June 2022, the FASB issued ASU 2022-03, ASC Subtopic 820 “Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions”. The FASB is issuing this Update (1) to clarify the guidance in Topic 820, Fair Value Measurement, when measuring the fair value of an equity security subject to contractual restrictions that prohibit the sale of an equity security, (2) to amend a related illustrative example, and (3) to introduce new disclosure requirements for equity securities subject to contractual sale restrictions that are measured at fair value in accordance with Topic 820.

For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance.

The Company is still evaluating the impact of this pronouncement on the consolidated financial statements.

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2023

Fair Value Measurements

Summary of fair value assets and liabilities measured on recurring basis

The following table classifies the Company’s liabilities measured at fair value on a recurring basis into the fair value hierarchy as of June 30, 2023 and December 31, 2022 (in thousands):

	Fair value measured at June 30, 2023
			Quoted prices in active		Significant other		Significant
	Fair value at		markets		observable inputs		unobservable inputs
	June 30, 2023		(Level 1)		(Level 2)		(Level 3)
Warrant liability	$	1,083	$	—	$	—	$	1,083
Contingent payable derivative liability		8,706		—		—		8,706
Share liability		223		—		—		223
Total fair value	$	10,012	$	—	$	—	$	10,012

	Fair value measured at December 31, 2022
			Quoted prices in active		Significant other		Significant
	Fair value at		markets		observable inputs		unobservable inputs
	December 31, 2022		(Level 1)		(Level 2)		(Level 3)
Warrant liability	$	80,559	$	—	$	—	$	80,559
Embedded redemption option		807		—		—		807
Contingent payable derivative liability		8,668		—		—		8,668
Share liability		678		—		—		678
Total fair value	$	90,712	$	—	$	—	$	90,712

Summary of changes in Level 3 liabilities measured at fair value

The following table presents changes in Level 3 liabilities measured at fair value for the six-month period ended June 30, 2023. Both observable and unobservable inputs were used to determine the fair value of positions that the Company has classified within the Level 3 category. Unrealized gains and losses associated with liabilities within the Level 3 category include changes in fair value that were attributable to both observable (e.g., changes in market interest rates) and unobservable (e.g., changes in unobservable long- dated volatilities) inputs (in thousands).

	Warrant			Embedded		Contingent Payable		Share
	Liability			Redemption Option		Derivative Liability		Liability		Total
Balance - January 1, 2023	$	80,559		$	807	$	8,668	$	678	$	90,712
Additional share liability		—			—		—		663		663
Redemption of share liability		—			—		—		(1,071)		(1,071)
Reclassification of warrant liabilities		(76,258)			—		—		—		(76,258)
Change in fair value		(3,218)			(807)		38		(47)		(4,034)
Balance - June 30, 2023	$	1,083	(1)	$	—	$	8,706	$	223	$	10,012

(1) The remaining balance of $1.1 million in warrant liability as of June 30, 2023 was related to certain conditional rights to independently purchase shares from the Company in a future raise of capital (the “Piggy-back Rights”). The Company accounted for the Piggy-back Rights as a freestanding financial instrument, which was classified as a liability at fair value on the Condensed Consolidated Balance Sheet

Summary of Company's warrant liabilities and embedded conversion feature that are categorized within Level 3 of the fair value hierarchy

	As of June 30, 2023						As of January 9, 2023
	Share			Contingent Payable			Warrant
	Liability			Derivative Liability			Liability
Strike price	$	0.60		$	0.57	*	$	0.31
Contractual term (years)		0.07			1.24			1.46
Volatility (annual)		60	%		61	%		87	%
Risk-free rate		4.3	%		5.5	%		4.3	%
Dividend yield (per share)		0	%		0	%		0	%

	As of December 31, 2022
	Warrant			Share			Contingent Payable
	Liability			Liability			Derivative Liability
Strike price	$	0.31		$	0.78	*	$	0.78	*
Contractual term (years)		1.5			0.1			0.6
Volatility (annual)		86	%		76	%		77	%
Risk-free rate		4.3	%		2.0	%		4.8	%
Dividend yield (per share)		0	%		0	%		0	%

* The strike price assumes the current stock price as of June 30, 2023 and December 31, 2022

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Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2023

Stock-based Compensation

Summary of total stock based compensation expense

The following table summarizes total stock-based compensation expense for the three and six months ended June 30, 2023 and 2022 (in thousands).

	For the three months ended				For the six months ended
	June 30,				June 30,
	2023		2022		2023		2022
Research and development	$	147	$	641	$	444	$	1,151
Research and development - related party
Milestones achieved (1)		—		1,410		520		1,410
Future milestones (2)		40		3,930		140		3,930
General and administrative		90		(218)		107		(111)
Total stock-based compensation expense	$	277	$	5,763	$	1,211	$	6,380

The related party amounts were for milestone incentives that either were earned or are deemed probable to be achieved in the future and become issuable at that time (as detailed below in Restricted Stock Awards).

(1) During the six months ended June 30, 2023, the Company recognized the remaining $0.5 million stock-based compensation related to the achieved milestone (obtaining a commercial manufacturing license from the MHRA). The Company had previously recognized $1.6 million stock-based compensation as of December 31, 2022.

The $1.4 million expense recognized in 2022 covers 2 one-time milestones: 2 required licenses for the Sawston facility (licenses from the Human Tissue Authority and from the MHRA for manufacturing for clinical trials and compassionate use cases).

(2) During the three and six months ended June 30, 2023, the Company recognized and expensed (but did not issue shares for) the pro-rata portion of the remaining one-time milestone stock awards for drafting key portions of the application for product approval of $40,000 and $140,000, respectively.

During the three and six months ended June 30, 2022, the Company recognized and expensed (but did not issue shares for) the pro-rata portion of 6 one-time milestones: 5 workstreams (Comparability, Stability, Potency, Product Profile and Fill/Finish) and one-time milestone for drafting key portions of the application for product approval of $3.9 million and $3.9 million, respectively.

Summary of stock option activity

The following table summarizes stock option activity for the Company’s option plans during the six months ended June 30, 2023 (amount in thousands, except per share number):

				Weighted Average
		Weighted		Remaining
	Number of	Average		Contractual Life	Total Intrinsic
	Shares	Exercise Price		(in years)	Value
Outstanding as of January 1, 2023	301,263	$	0.34	7.0	$	135,225
Cashless exercised	(1,827)		0.41	—		—
Outstanding as of June 30, 2023	299,436	$	0.33	6.5	$	73,083
Options vested (1)	281,278	$	0.33	6.5	$	69,223

(1) An aggregate 153 million stock options held by Ms. Linda Powers, the Company’s Chief Executive Officer, and Mr. Leslie Goldman, the Company’s Senior Vice President, are subject to an agreement (the “Blocker Letter Agreement”) under which they cannot exercise any options or warrants except upon at least 61 days’ prior notice.

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Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2023

Property, Plant and Equipment

Schedule of property and equipment

Property, plant and equipment consist of the following at June 30, 2023 and December 31, 2022 (in thousands):

	June 30,		December 31,		Estimated
	2023		2022		Useful Life
Leasehold improvements	$	17,250	$	13,070	Lesser of lease term or estimated useful life
Office furniture and equipment		455		300	3-5 years
Computer and manufacturing equipment and software		2,495		2,238	3-5 years
Land in the United Kingdom		86		82	NA
		20,286		15,690	NA
Less: accumulated depreciation		(3,000)		(2,272)
Total property, plant and equipment, net	$	17,286	$	13,418
Construction in progress	$	—	$	2,028

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Outstanding Debt (Tables)

6 Months Ended

Jun. 30, 2023

Outstanding Debt

Schedule of outstanding debt

The following two tables summarize outstanding debt as of June 30, 2023 and December 31, 2022, respectively (amount in thousands):

		Stated
		Interest			Conversion					Remaining		Carrying
	Maturity Date	Rate			Price			Face Value		Debt Discount		Value
Short term convertible notes payable
6% unsecured	Due		6	%	$	3.09		$	135	$	—	$	135
8% unsecured	1/31/2024		8	%		0.55	*		900		(177)		723
8% unsecured	6/30/2024		8	%		0.50	*		1,000		—		1,000
									2,035		(177)		1,858
Short term notes payable
8% unsecured	Various		8	%		N/A			8,253		(413)		7,840
12% unsecured	On Demand		12	%		N/A			562		—		562
									8,815		(413)		8,402
Long term notes payable
8% unsecured	7/26/2024		8	%		N/A			16,117		(1,121)		14,996
6% secured	3/25/2025		6	%		N/A			748		—		748
									16,865		(1,121)		15,744
Ending balance as of June 30, 2023								$	27,715	$	(1,711)	$	26,004

*The 8% convertible notes are convertible into Series C preferred shares at $12.50 - $13.75 per share. Each Series C preferred share is convertible into common shares with 30 days’ restriction period. The conversion price in common share equivalent is at $0.50 and $0.55 per share.

		Stated									Embedded
		Interest			Conversion				Remaining		Redemption		Carrying
	Maturity Date	Rate			Price		Face Value		Debt Discount		Option		Value
Short term convertible notes payable
6% unsecured	Due		6	%	$	3.09	$	135	$	—	$	—	$	135
								135		—		—		135
Short term notes payable
8% unsecured	Various		8	%		N/A		14,540		(1,300)		807		14,047
9% unsecured	Various		9	%		N/A		793		—		—		793
12% unsecured	On Demand		12	%		N/A		563		—		—		563
								15,896		(1,300)		807		15,403
Long term notes payable
8% unsecured	7/26/2024		8	%		N/A		5,505		(432)		—		5,073
6% secured	3/25/2025		6	%		N/A		918		—		—		918
								6,423		(432)		—		5,991
Ending balance as of December 31, 2022							$	22,454	$	(1,732)	$	807	$	21,529

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Net Loss per Share Applicable to Common Stockholders (Tables)

6 Months Ended

Jun. 30, 2023

Net Loss per Share Applicable to Common Stockholders

Schedule of antidilutive securities were not included in the diluted net earnings (loss) per share

The following securities were not included in the diluted net loss per share calculation because their effect was anti-dilutive as of the periods presented (in thousands):

	For the six months ended
	June 30,
	2023	2022
Series C convertible preferred stock	38,638	—
Common stock options	299,436	309,512
Common stock warrants	117,863	153,110
Convertible notes and accrued interest	3,748	76
Potentially dilutive securities	459,685	462,698

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Related Party Transactions (Tables)

6 Months Ended

Jun. 30, 2023

Related Party Transactions

Summary of total research and development costs from related party

The following table summarizes total research and development costs from Advent for the three and six months ended June 30, 2023 and 2022, respectively (in thousands).

	For the three months ended				For the six months ended
	June 30,				June 30,
	2023		2022		2023		2022
Advent BioServices
Manufacturing cost in London	$	1,660	$	1,424	$	3,303	$	2,827
Manufacturing cost at Sawston facility		2,098		1,276		3,810		2,701
SOW 6 one-time milestones - Shares
Expensed and paid (milestone complete) (1)		—		1,410		520		1,410
Expensed but unpaid, not yet due (milestone not yet complete) (2)(3)		40		3,930		140		3,930
SOW 6 one-time milestones - Cash
Expensed and paid (milestone complete) (4)		—		500		—		500
Expensed and due, but unpaid (milestone complete) (5)		—		1,000		550		1,000
Expensed but unpaid, not yet due (milestone not yet complete) (6)		60		2,314		210		2,314
Total	$	3,858	$	11,854	$	8,533	$	14,682

(1) The payment for the six months ended June 30, 2023 covers the one-time milestone for obtaining a commercial manufacturing license from the MHRA. The payment for the six months ended June 30, 2022 also covers 2 other one-time milestones: 2 required licenses for the Sawston facility (licenses from the Human Tissue Authority and from the MHRA for manufacturing for clinical trials and compassionate use cases).

(2) The expense for the six months ended June 30, 2023 covers the one-time milestone for drafting key portions of the application for product approval.

(3) The expense for the six months ended June 30, 2022 covers 6 one-time milestones: 5 workstreams (Comparability, Stability, Potency, Product Profile and Fill/Finish) and 1 one-time milestone for drafting key portions of the application for product approval.

(4) This covers one-time milestone: a required license for the Sawston facility from the Human Tissue Authority.

(5) The expense for the six months ended June 30, 2023 covers the one-time milestone workstream: Mechanism of Action. The expense for the six months ended June 30, 2022 covers one-time milestone: a required license for the Sawston facility from the MHRA for manufacturing for clinical trials and compassionate use cases.

(6) The expense for the six months ended June 30, 2023 covers the one-time milestone for drafting key portions of the application for product approval. The expense for the six months ended June 30, 2022 covers 6 one-time milestones: 5 workstreams (Comparability, Stability, Potency, Product Profile and Fill/Finish) and one-time milestone for drafting key portions of the application for product approval.

Summary of outstanding unpaid accounts payable and accrued expenses held by related parties

As of June 30, 2023, there were outstanding unpaid accounts payable and accrued expenses owed to Advent as summarized in the following table (in thousands). These unpaid amounts are part of the Related Party expenses reported in the above section.

	June 30,		December 31,
	2023		2022
Advent BioServices - amount invoiced but unpaid	$	2,855	$	1,844
Advent BioServices - amount accrued but unpaid		3,496		4,736
Total payable and accrued, but unpaid to Advent BioServices	$	6,351	$	6,580

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Stockholders' Deficit (Tables)

6 Months Ended

Jun. 30, 2023

Stockholders' Deficit

Schedule of warrant activity

The following is a summary of warrant activity for the three months ended March 31, 2023 (dollars in thousands, except per share data):

	Number of	Weighted Average		Remaining
	Warrants	Exercise Price		Contractual Term
Outstanding as of January 1, 2023	141,048	$	0.31	1.16
Warrants exercised for cash	(12,320)		0.22	—
Cashless warrrants exercise	(10,615)		0.20	—
Warrants expired and cancellation	(250)		1.36	—
Outstanding as of June 30, 2023	117,863	$	0.31	1.72

Schedule of modifications to the warrants following weighted average assumptions

	As of June 30, 2023						As of January 9, 2023
	Share			Contingent Payable			Warrant
	Liability			Derivative Liability			Liability
Strike price	$	0.60		$	0.57	*	$	0.31
Contractual term (years)		0.07			1.24			1.46
Volatility (annual)		60	%		61	%		87	%
Risk-free rate		4.3	%		5.5	%		4.3	%
Dividend yield (per share)		0	%		0	%		0	%

	As of December 31, 2022
	Warrant			Share			Contingent Payable
	Liability			Liability			Derivative Liability
Strike price	$	0.31		$	0.78	*	$	0.78	*
Contractual term (years)		1.5			0.1			0.6
Volatility (annual)		86	%		76	%		77	%
Risk-free rate		4.3	%		2.0	%		4.8	%
Dividend yield (per share)		0	%		0	%		0	%

* The strike price assumes the current stock price as of June 30, 2023 and December 31, 2022

Warrants

Stockholders' Deficit

Schedule of modifications to the warrants following weighted average assumptions

	Post-modification			Pre-modification
Exercise price	$	0.29		$	0.30
Expected term (in years)		1.9			1.6
Volatility		70	%		72	%
Risk-free interest rate		4.7	%		4.6	%
Dividend yield		0	%		0	%

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2023

Commitments and Contingencies.

Schedule of quantitative information about the company's operating leases

The following summarizes quantitative information about the Company’s operating leases (amount in thousands):

	For the six months ended
	June 30, 2023
	U.K			U.S			Total
Lease cost
Operating lease cost	$	293		$	124		$	417
Short-term lease cost		49			—			49
Variable lease cost		—			7			7
Sub-lease income		(72)			—			(72)
Total	$	270		$	131		$	401
Other information
Operating cash flows from operating leases	$	(308)		$	(148)		$	(457)
Weighted-average remaining lease term – operating leases		8.2			0.9
Weighted-average discount rate – operating leases		12	%		12	%

	For the Six Months ended
	June 30, 2022
	U.K			U.S			Total
Lease cost
Operating lease cost	$	309		$	130		$	439
Short-term lease cost		34			—			34
Variable lease cost		—			12			12
Total		(73)			—			(73)
	$	270		$	142		$	412
Other information
Operating cash flows from operating leases	$	(325)		$	(144)		$	(469)
Weighted-average remaining lease term – operating leases		8.7			1.5
Weighted-average discount rate – operating leases		12	%		12	%

Schedule of maturities of our operating leases, excluding short-term leases

Maturities of our operating leases, excluding short-term leases and sublease agreement, are as follows:

Six months ended December 31, 2023	$	466
Year ended December 31, 2024		838
Year ended December 31, 2025		633
Year ended December 31, 2026		633
Year ended December 31, 2027		633
Thereafter		6,947
Total		10,151
Less present value discount		(5,397)
Operating lease liabilities included in the Condensed Consolidated Balance Sheet at June 30, 2023	$	4,754

Maturities of our operating leases under the sublease agreement, are as follows:

Six months ended December 31, 2023	$	73
Year ended December 31, 2024		145
Year ended December 31, 2025		145
Year ended December 31, 2026		145
Thereafter		1,740
Total	$	2,248

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Financial Condition, Going Concern and Management Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Financial Condition, Going Concern and Management Plans
Net loss	$ (14,448)	$ (29,668)	$ (25,100)	$ (43,882)
Payments for operating activities			$ 22,800

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Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Millions	Jan. 09, 2023	Jun. 30, 2023	Jan. 08, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Common stock, shares authorized	1,700,000,000	1,700,000,000	1,200,000,000	1,700,000,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001		$ 0.001
Number of warrants to purchase shares of common stock reclassified from liability to equity	141,000,000
Reclassification of fair value of the warrant liability to equity	$ 76.3
Remaining balance in warrant liability		$ 1.1

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Fair Value Measurements (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Fair Value Measurements
Warrant liability	$ 1,083	$ 80,559
Embedded redemption option		807
Contingent payable derivative liability	8,706	8,668
Share liability	223	678
Total fair value	10,012	90,712
Fair value, transfer between level 1, 2 or 3	0
Level 3
Fair Value Measurements
Warrant liability	1,083	80,559
Embedded redemption option		807
Contingent payable derivative liability	8,706	8,668
Share liability	223	678
Total fair value	$ 10,012	$ 90,712

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Fair Value Measurements - Changes in Level 3 liabilities (Details) - USD ($) $ in Thousands		6 Months Ended
	Jan. 09, 2023	Jun. 30, 2023
Fair Value Measurements
Balance		$ 90,712
Additional share liability		663
Redemption of share liability		(1,071)
Reclassification of warrant liabilities		(76,258)
Change in fair value		(4,034)
Balance		10,012
Warrant liability related to purchase shares in a future raise of capital		1,100
Reclassification of fair value of the warrant liability into the additional paid-in capital	$ 76,300
Change in fair value of the common stock warrant liability	$ 2,300
Warrant Liability
Fair Value Measurements
Balance		80,559
Reclassification of warrant liabilities		(76,258)
Change in fair value		(3,218)
Balance		1,083
Embedded Redemption Option
Fair Value Measurements
Balance		807
Change in fair value		(807)
Contingent Payable Derivative Liability
Fair Value Measurements
Balance		8,668
Change in fair value		38
Balance		8,706
Share liability
Fair Value Measurements
Balance		678
Additional share liability		663
Redemption of share liability		(1,071)
Change in fair value		(47)
Balance		$ 223

XML

Fair Value Measurements - Weighted average (in aggregate) significant unobservable inputs (Details) - $ / shares		6 Months Ended	12 Months Ended
	Jan. 09, 2023	Jun. 30, 2023	Dec. 31, 2022
Warrant Liability
Fair Value Measurements
Strike price	$ 0.31
Contractual term (years)	1 year 5 months 15 days
Volatility (annual)	87.00%
Risk-free rate	4.30%
Dividend yield (per share)	0.00%
Contingent Payable Derivative Liability
Fair Value Measurements
Strike price		$ 0.57
Contractual term (years)		1 year 2 months 26 days
Volatility (annual)		61.00%
Risk-free rate		5.50%
Dividend yield (per share)		0.00%
Share liability
Fair Value Measurements
Strike price		$ 0.60
Contractual term (years)		25 days
Volatility (annual)		60.00%
Risk-free rate		4.30%
Dividend yield (per share)		0.00%
Level 3 | Warrant Liability
Fair Value Measurements
Strike price			$ 0.31
Contractual term (years)			1 year 6 months
Volatility (annual)			86.00%
Risk-free rate			4.30%
Dividend yield (per share)			0.00%
Level 3 | Contingent Payable Derivative Liability
Fair Value Measurements
Strike price			$ 0.78
Contractual term (years)			7 months 6 days
Volatility (annual)			77.00%
Risk-free rate			4.80%
Dividend yield (per share)			0.00%
Level 3 | Share liability
Fair Value Measurements
Strike price			$ 0.78
Contractual term (years)			1 month 6 days
Volatility (annual)			76.00%
Risk-free rate			2.00%
Dividend yield (per share)			0.00%

XML

Stock-based Compensation - Summary of stock-based compensation expense (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($) item Milestone	Jun. 30, 2023 USD ($) Milestone	Jun. 30, 2022 USD ($) item Milestone	Dec. 31, 2022 USD ($) item Milestone
Stock-based Compensation
Number of milestones completed | Milestone			2
Total stock-based compensation expense	$ 277,000	$ 5,763,000	$ 1,211,000	$ 6,380,000
Total unrecognized stock compensation cost	500,000		500,000
Stock based compensation					$ 1,600,000
Stock based compensation recognized and expensed but not yet paid	500,000		500,000
Milestone achieved
Stock-based Compensation
Total stock-based compensation expense			500,000
Research and development
Stock-based Compensation
Total stock-based compensation expense	147,000	641,000	444,000	1,151,000
Milestone achieved
Stock-based Compensation
Number of milestones | Milestone					2
Number of required licenses for the Sawston facility | item					2
Total stock-based compensation expense		$ 1,410,000	520,000	$ 1,410,000	$ 1,400,000
Future milestone
Stock-based Compensation
Number of milestones | Milestone		6		6
Number of workstreams | item		5		5
Total stock-based compensation expense	40,000	$ 3,930,000	140,000	$ 3,930,000
General and administrative
Stock-based Compensation
Total stock-based compensation expense	$ 90,000	$ (218,000)	$ 107,000	$ (111,000)

XML

Stock-based Compensation - Stock option activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares
Stock-based Compensation
Number of Shares, Outstanding | shares	301,263
Number of Shares, Cashless exercised | shares	(1,827)
Number of Shares, Outstanding | shares	299,436	301,263
Number of Shares, Options vested | shares	281,278
Weighted Average Exercise Price, Outstanding | $ / shares	$ 0.34
Weighted Average Exercise Price, Cashless exercised | $ / shares	0.41
Weighted Average Exercise Price, Outstanding | $ / shares	0.33	$ 0.34
Weighted Average Exercise Price, Options vested | $ / shares	$ 0.33
Weighted Average Remaining Contractual Life (in years), Outstanding	6 years 6 months	7 years
Weighted Average Remaining Contractual Life (in years), Options vested	6 years 6 months
Total Intrinsic Value, Outstanding | $	$ 135,225
Total Intrinsic Value, Outstanding | $	73,083	$ 135,225
Total Intrinsic Value, Options vested | $	$ 69,223

XML

Stock-based Compensation - Restricted Stock Awards (Details)			1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 16, 2023 USD ($) shares	Sep. 26, 2022 USD ($) item Milestone shares	Apr. 30, 2022 item	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($) shares	Dec. 31, 2022 USD ($) Milestone item
Stock-based Compensation
Proceeds from issuance of common stock to investors							$ 9,689,000
Stock-based compensation				$ 277,000	$ 5,763,000	$ 1,211,000	$ 6,380,000
Total intrinsic value of all outstanding options				73,083,000		73,083,000		$ 135,225,000
Common Stock
Stock-based Compensation
Number of shares issued during the period | shares							13,137,000
Proceeds from issuance of common stock to investors							$ 13,000
Amended Statement of Work 6
Stock-based Compensation
Number of milestones | Milestone		10
Other Service Agreement
Stock-based Compensation
Service period	4 months
General and administrative
Stock-based Compensation
Stock-based compensation				90,000	$ (218,000)	107,000	$ (111,000)
General and administrative | Other Service Agreement
Stock-based Compensation
Stock-based compensation				89,000		100,000
Restricted Stock Awards
Stock-based Compensation
Number of milestones | Milestone								7
Number of workstreams | Milestone								5
Number of required licenses for the Sawston facility | item								2
Amount recognized and expensed related to stock component				$ 40,000		100,000
Total intrinsic value of all outstanding options		$ 10,100,000
Restricted Stock Awards | Statement of Work 6
Stock-based Compensation
Number of workstreams | item		6
Restricted Stock Awards | Amended Statement of Work 6
Stock-based Compensation
Number of required licenses for the Sawston facility | item		3
Amount recognized and expensed related to cash component						500,000
Share based compensation arrangement by share based payment award number of shares available for grant | shares		13,500,000
Restricted Stock Awards | Amended Statement of Work 6 | Common Stock
Stock-based Compensation
Stock issued						$ 3,000,000.0
Restricted Stock Awards | Other Service Agreement
Stock-based Compensation
Number of shares issued during the period | shares	8,000
Proceeds from issuance of common stock to investors	$ 100,000
Restricted Stock Awards | Advent BioServices | Statement of Work 6
Stock-based Compensation
Number of workstreams | item			5
Number of required licenses for the Sawston facility | item			3

XML

Stock-based Compensation - Additional Information (Details) shares in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($) shares
Stock-based Compensation
Total unrecognized stock compensation cost | $	$ 0.5
Unrecognized compensation cost recognized period (in years)	1 year 6 months
Notice for exercising any option or warrant (in days)	61 days
Employee Stock Option
Stock-based Compensation
Number of Shares, Vested | shares	153

XML

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment
Construction in progress		$ 2,028
Property, plant and equipment, net	$ 17,286	13,418
Domestic
Property, Plant and Equipment
Property, plant and equipment, gross	20,286	15,690
Less: accumulated depreciation	(3,000)	(2,272)
Construction in progress		2,028
Leasehold improvements | Domestic
Property, Plant and Equipment
Property, plant and equipment, gross	$ 17,250	13,070
Leasehold improvements useful life	Lesser of lease term or estimated useful life
Office furniture and equipment | Maximum
Property, Plant and Equipment
Property, plant and equipment, useful life	5 years
Office furniture and equipment | Minimum
Property, Plant and Equipment
Property, plant and equipment, useful life	3 years
Office furniture and equipment | Domestic
Property, Plant and Equipment
Property, plant and equipment, gross	$ 455	300
Computer and manufacturing equipment and software | Maximum
Property, Plant and Equipment
Property, plant and equipment, useful life	5 years
Computer and manufacturing equipment and software | Minimum
Property, Plant and Equipment
Property, plant and equipment, useful life	3 years
Computer and manufacturing equipment and software | Domestic
Property, Plant and Equipment
Property, plant and equipment, gross	$ 2,495	2,238
Land | U.K
Property, Plant and Equipment
Property, plant and equipment, gross	$ 86	$ 82

XML

Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Property, Plant and Equipment
Depreciation	$ 0.7	$ 0.6

XML

Outstanding Debt (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Outstanding Debt
Face Value	$ 27,715	$ 22,454
Remaining Debt Discount	(1,711)	(1,732)
Embedded Redemption Option		807
Carrying Value	26,004	21,529
Short term convertible notes payable
Outstanding Debt
Face Value	2,035	135
Remaining Debt Discount	(177)
Carrying Value	$ 1,858	$ 135
Short term convertible notes payable | 6% unsecured
Outstanding Debt
Maturity Date	Due	Due
Stated Interest Rate	6.00%	6.00%
Conversion price	$ 3.09
Face Value	$ 135	$ 135
Carrying Value	$ 135	135
Short term convertible notes payable | 8% unsecured
Outstanding Debt
Stated Interest Rate	8.00%
Short term convertible notes payable | 8% unsecured due 1/31/2024
Outstanding Debt
Maturity Date	1/31/2024
Stated Interest Rate	8.00%
Conversion price	$ 0.55
Face Value	$ 900
Remaining Debt Discount	(177)
Carrying Value	$ 723
Short term convertible notes payable | 8% unsecured due 6/30/2024
Outstanding Debt
Maturity Date	6/30/2024
Stated Interest Rate	8.00%
Conversion price	$ 0.50
Face Value	$ 1,000
Carrying Value	1,000
Short term notes payable
Outstanding Debt
Face Value	8,815	15,896
Remaining Debt Discount	(413)	(1,300)
Embedded Redemption Option		807
Carrying Value	$ 8,402	$ 15,403
Short term notes payable | 8% unsecured
Outstanding Debt
Maturity Date	Various	Various
Stated Interest Rate	8.00%	8.00%
Face Value	$ 8,253	$ 14,540
Remaining Debt Discount	(413)	(1,300)
Embedded Redemption Option		807
Carrying Value	$ 7,840	$ 14,047
Short term notes payable | 9% unsecured
Outstanding Debt
Maturity Date		Various
Stated Interest Rate		9.00%
Face Value		$ 793
Carrying Value		$ 793
Short term notes payable | 12% unsecured
Outstanding Debt
Maturity Date	On Demand	On Demand
Stated Interest Rate	12.00%	12.00%
Face Value	$ 562	$ 563
Carrying Value	562	563
Long term notes payable
Outstanding Debt
Face Value	16,865	6,423
Remaining Debt Discount	(1,121)	(432)
Carrying Value	$ 15,744	$ 5,991
Long term notes payable | 8% unsecured
Outstanding Debt
Maturity Date	7/26/2024	7/26/2024
Stated Interest Rate	8.00%	8.00%
Face Value	$ 16,117	$ 5,505
Remaining Debt Discount	(1,121)	(432)
Carrying Value	$ 14,996	$ 5,073
Long term notes payable | 6% secured
Outstanding Debt
Maturity Date	3/25/2025	3/25/2025
Stated Interest Rate	6.00%	6.00%
Face Value	$ 748	$ 918
Carrying Value	$ 748	$ 918

XML

Outstanding Debt - Additional Information (Details) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended		6 Months Ended
	Mar. 02, 2023 USD ($) installment	Jun. 30, 2023 USD ($) item $ / shares	Apr. 30, 2023 USD ($) item $ / shares	Jun. 30, 2023 USD ($) $ / shares	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2022 USD ($)	Mar. 31, 2023 $ / shares	Dec. 31, 2022 USD ($)
Notes Payable
Debt discount		$ 1,711		$ 1,711		$ 1,711			$ 1,732
Fair value of debt converted		2,100		2,100		2,100
Share liabilities extinguished						1,100
Additional share liability recognized						700
Gain (loss) from debt extinguishment						1,800
Change in fair value of embedded redemption option		800		800		800
Interest expense including amortization of debt discount					$ 1,400	2,300	$ 3,300
Amortization of debt discount					700	1,300	$ 1,500
Aggregate principal amount		27,715		27,715		27,715			22,454
Amount reclassed from investor advances to convertible notes payable		1,858		1,858		1,858			135
Gain contingency		4,100		4,100		4,100
Short term convertible notes payable
Notes Payable
Debt discount		177		177		177
Aggregate principal amount		$ 2,035		$ 2,035		$ 2,035			$ 135
8% unsecured [Member] | Short term convertible notes payable
Notes Payable
Interest rate (in percent)		8.00%		8.00%		8.00%
Period of which preferred stock can convert into common shares						30 days
8% unsecured due 1/31/2024 | Short term convertible notes payable
Notes Payable
Debt discount		$ 177		$ 177		$ 177
Aggregate principal amount		$ 900		$ 900		$ 900
Interest rate (in percent)		8.00%		8.00%		8.00%
Conversion price | $ / shares		$ 0.55		$ 0.55		$ 0.55
8% unsecured due 6/30/2024 | Short term convertible notes payable
Notes Payable
Aggregate principal amount		$ 1,000		$ 1,000		$ 1,000
Interest rate (in percent)		8.00%		8.00%		8.00%
Conversion price | $ / shares		$ 0.50		$ 0.50		$ 0.50
Minimum
Notes Payable
Exercise price | $ / shares		0.153		0.153		0.153
Minimum | 8% unsecured [Member] | Short term convertible notes payable | Series C convertible preferred stock
Notes Payable
Conversion price | $ / shares		12.50		12.50		12.50
Maximum
Notes Payable
Exercise price | $ / shares		0.85		0.85		0.85
Maximum | 8% unsecured [Member] | Short term convertible notes payable | Series C convertible preferred stock
Notes Payable
Conversion price | $ / shares		$ 13.75		$ 13.75		$ 13.75
Notes
Notes Payable
Cash payments						$ 7,400
Number of shares issued to lenders in lieu of cash payments | shares						15,200,000
Conversion of share settled debt into common stock						$ 9,600
Accrued interest expense on debt						700
Interest expense including amortization of debt discount				$ 1,300
Amortization of debt discount				700	$ 700
Notes | Series C convertible preferred stock
Notes Payable
Accrued interest expense on debt						100
Gain (loss) from debt extinguishment						100
Aggregate principal amount		$ 900		$ 900		$ 900
Notes | Senior Convertible Notes [Member]
Notes Payable
Number of shares issued to lenders in lieu of cash payments | shares						56,000
Conversion of share settled debt into common stock						$ 1,000
Commercial Loan
Notes Payable
Term of debt instrument	22 months
Aggregate principal amount	$ 11,000
Interest rate (in percent)	8.00%
Term when no principal repayments was made	8 months
Number of installments for amortization | installment	14
Original issue discount	$ 1,000
April convertible Notes
Notes Payable
Exercise price | $ / shares		$ 0.55		$ 0.55		$ 0.55		$ 2.00
Additional term (in months)						9 months
Debt discount		$ 200		$ 200		$ 200
Term of debt instrument			10 months
Aggregate principal amount			$ 900
Purchase price			$ 800
Interest rate (in percent)			8.00%
Amount reclassed from investor advances to convertible notes payable			$ 700
Cash proceeds						100
April convertible Notes | Series C convertible preferred stock
Notes Payable
Conversion price | $ / shares			$ 13.75
Period of which preferred stock can convert into common shares			30 days
Number of common stock shares issued upon conversion | item			25
June Convertible Note
Notes Payable
Term of debt instrument		1 year
Aggregate principal amount		$ 1,000		1,000		1,000
Purchase price		$ 1,000		$ 1,000		$ 1,000
Interest rate (in percent)		8.00%		8.00%		8.00%
June Convertible Note | Series C convertible preferred stock
Notes Payable
Conversion price | $ / shares		$ 12.50		$ 12.50		$ 12.50
Period of which preferred stock can convert into common shares		30 days
Number of common stock shares issued upon conversion | item		25

XML

Net Loss per Share Applicable to Common Stockholders (Details) - shares shares in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Net Loss per Share Applicable to Common Stockholders
Potentially dilutive securities	459,685	462,698
Series C convertible preferred stock
Net Loss per Share Applicable to Common Stockholders
Potentially dilutive securities	38,638
Common stock options
Net Loss per Share Applicable to Common Stockholders
Potentially dilutive securities	299,436	309,512
Common stock warrants
Net Loss per Share Applicable to Common Stockholders
Potentially dilutive securities	117,863	153,110
Convertible notes and accrued interest
Net Loss per Share Applicable to Common Stockholders
Potentially dilutive securities	3,748	76

XML

Related Party Transactions (Details) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($) Program Milestone item shares	Dec. 31, 2022 USD ($)
Related Party Transactions
Percentage of margin	15.00%
Additional term of agreement	12 months
Amount paid in cash for milestones	$ 2.0
Number of milestones completed | Milestone	2
Amount of payment for milestone completed and fully expensed but unpaid	$ 1.0
Partial payment for milestone completed	$ 1.0
Shares issued for completion of milestone | shares	3.0
Fair value of debt converted	$ 2.1
Stock-based compensation related to the achieved milestone	0.5	$ 1.6
Stock based compensation recognized and expensed but not yet paid	0.5
Amount related to future cash milestone payments anticipated to achieve and earn	0.2
Fair value of future shares milestone payments anticipate to achieve and earn	$ 0.1
Advent Bio services agreement
Related Party Transactions
Number of operational programs | Program	3
Number of sets of one-time milestones | Milestone	10
Number of required licenses for the Sawston facility | item	3

XML

Related Party Transactions - Research and development Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Related Party Transactions
Related party costs, SOW 6 one-time milestones - Cash	$ 60	$ 2,314	$ 210	$ 2,314
Total operating costs and expenses	13,778	21,576	27,622	34,265
Advent BioServices
Related Party Transactions
Total operating costs and expenses	3,858	11,854	$ 8,533	$ 14,682
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]			us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Advent BioServices | Manufacturing cost in London
Related Party Transactions
Related party costs, Manufacturing costs	1,660	1,424	$ 3,303	$ 2,827
Advent BioServices | Manufacturing cost at Sawston facility
Related Party Transactions
Related party costs, Manufacturing costs	2,098	1,276	3,810	2,701
Advent BioServices | Expensed and paid (milestone complete)
Related Party Transactions
Related party costs, SOW 6 one-time milestones - Shares		1,410	520	1,410
Advent BioServices | Expensed and paid (partial milestone earned)
Related Party Transactions
Related party costs, SOW 6 one-time milestones - Cash		500		500
Advent BioServices | Expensed and due, but unpaid (milestone complete)
Related Party Transactions
Related party costs, SOW 6 one-time milestones - Shares	$ 40	3,930	140	3,930
Related party costs, SOW 6 one-time milestones - Cash		$ 1,000	$ 550	$ 1,000

XML

Related Party Transactions - Advent BioServices Sublease Agreement (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2023 USD ($) ft² item	Jun. 30, 2023 GBP (£) ft² item	Jun. 30, 2023 USD ($) ft² item	Jun. 30, 2022 USD ($)
Related Party Transactions
Total area of lease (in sqft) | ft²	88,000	88,000	88,000
Lease payments			$ 457,000	$ 469,000
Sub-lease income	$ 36,000		$ 72,000	$ 73,000
Advent BioServices
Related Party Transactions
Area of sublease (in sqft) | item	14,459	14,459	14,459
Total area of lease (in sqft) | ft²	88,000	88,000	88,000
Number of times calculated for lease payment under sub-lease | item		2	2
Rate per square foot under sub-lease		£ 5.75	$ 7.28
Cap rate per square foot under sub-lease			10
Sub-lease payments receivable			145,000
Lease payments | £		£ 500,000
Approximate lease payments			$ 633,000

XML

Related Party Transactions - Related Party Accounts Payable (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Related Party Transactions
Fair value of debt converted	$ 2,100
Accounts payable to related party
Related Party Transactions
Unpaid board compensation	200
Advent BioServices - amount invoiced
Related Party Transactions
Invoiced but unpaid	2,855	$ 1,844
Advent BioServices - amount invoiced but unpaid
Related Party Transactions
Accrued and unpaid	3,496	4,736
Advent BioServices
Related Party Transactions
Accounts payable and accrued expenses	$ 6,351	$ 6,580
Accounts Payable, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember

XML

Preferred Stock (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2022 shares	Jun. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) shares
Preferred Stock
Settled true-up provision			$ 1,100,000
Proceeds from exercise of warrants			1,566,000	$ 9,556,000
Aggregate principal amount	$ 27,715,000		27,715,000		$ 22,454,000
Gain (loss) from debt extinguishment			$ 1,800,000
Notes
Preferred Stock
Number of shares issued to lenders in lieu of cash payments | shares			15,200,000
Conversion of share settled debt into common stock			$ 9,600,000
Accrued interest expense on debt			$ 700,000
Notes | Senior Convertible Notes [Member]
Preferred Stock
Number of shares issued to lenders in lieu of cash payments | shares			56,000
Conversion of share settled debt into common stock			$ 1,000,000.0
Common Stock
Preferred Stock
Issuance of stock for cash (in shares) | shares		8,584,000
Minimum
Preferred Stock
Warrants exercise price | $ / shares	$ 0.153		$ 0.153
Maximum
Preferred Stock
Warrants exercise price | $ / shares	0.85		0.85
Series C Subscription Agreements | Series C Investors
Preferred Stock
Temporary equity, par value | $ / shares	$ 0.001		$ 0.001
Series C Convertible Preferred Stock
Preferred Stock
Issuance of stock for cash (in shares) | shares	176,000		324,000
Temporary equity, shares designated | shares	10,000,000		10,000,000		10,000,000
Proceeds from issuance of Series C convertible preferred stock			$ 4,756,000
Series C Convertible Preferred Stock | Notes
Preferred Stock
Aggregate principal amount	$ 900,000		900,000
Accrued interest expense on debt			100,000
Gain (loss) from debt extinguishment			$ 100,000
Series C Convertible Preferred Stock | Common Stock
Preferred Stock
Number of shares converted | shares			300,000
Value of shares converted			$ 3,600,000
Number of shares issued on conversion | shares	6,400,000		6,400,000
Conversion ratio from preferred stock to common stock	0.04		0.04
Series C Convertible Preferred Stock | Series C Subscription Agreements | Series C Investors
Preferred Stock
Issuance of stock for cash (in shares) | shares			300,000
Purchase price | $ / shares	$ 14.69		$ 14.69
Gross proceeds from issuance of shares			$ 4,800,000
Price per share | $ / shares	$ 14.69		$ 14.69

XML

Stockholders' Deficit - Stock Purchase Warrants (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Stockholders' Deficit
Number of Warrants, Outstanding	141,048
Number of Warrants, Warrants exercised for cash	(12,320)
Number of Warrants, Cashless warrants exercise	(10,615)
Weighted Average Exercise Price, Cashless warrants exercise	$ 0.20
Number of Warrants, Warrants expired and cancellations	(250)
Number of Warrants, Outstanding	117,863	141,048
Weighted Average Exercise Price - Outstanding	$ 0.31
Weighted Average Exercise Price - Warrants exercised for cash	0.22
Weighted Average Exercise Price, Warrants expired and cancellations	1.36
Weighted Average Exercise Price - Outstanding	$ 0.31	$ 0.31
Remaining Contractual Term	1 year 8 months 19 days	1 year 1 month 28 days

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Stockholders' Deficit - Warrant Modifications (Details) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023 USD ($) $ / shares	Jun. 30, 2023 USD ($) $ / shares
Stock-based Compensation
Deemed dividend related to warrant modification | $	$ 519	$ 914
Post Modification
Stock-based Compensation
Exercise price	$ 0.29	$ 0.29
Expected term (in years)		1 year 10 months 24 days
Volatility		70.00%
Risk-free interest rate		4.70%
Dividend yield		0.00%
Pre Modification
Stock-based Compensation
Exercise price	$ 0.30	$ 0.30
Expected term (in years)		1 year 7 months 6 days
Volatility		72.00%
Risk-free interest rate		4.60%
Dividend yield		0.00%

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Stockholders' Deficit - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Jan. 09, 2023	Jan. 08, 2023
Stockholders' Deficit
Common stock, shares authorized	1,700,000,000	1,700,000,000	1,700,000,000	1,700,000,000	1,200,000,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Proceeds from exercise of outstanding warrants		$ 2,800
Proceeds from investor advances for exercise of warrants			$ 1,200
Stock issued on exercise of warrants		12,300,000
Number of options exercised in cashless		1,500,000
Number of Warrants, cashless warrants exercise		10,615
Number of shares issued for repayments of debt		15,200,000
Amount of debt redeemed from issuance of shares		$ 7,400
Settled true-up provision		1,100
Amount of interest on debt redeemed from issuance of shares		$ 700
Number of warrants outstanding	117,863	117,863	141,048
Class of warrant or right, extended in suspension		98,000,000
Modification cost associated with debt financing		$ 200
Deemed dividend related to warrant modification	$ 519	914
Pre Modification
Stockholders' Deficit
Incremental stock-based compensation for stock options modification		$ 1,100
Warrants issued as consideration for warrants suspension
Stockholders' Deficit
Number of warrants outstanding	118,000,000	118,000,000
Cashless Warrants Exercise
Stockholders' Deficit
Number of Warrants, cashless warrants exercise		10,600,000
Common Stock
Stockholders' Deficit
Shares of common stock issued on exercise of warrants and options		9,900,000
Minimum
Stockholders' Deficit
Warrants exercise price	$ 0.153	$ 0.153
Minimum | Common Stock | Cashless Warrants Exercise
Stockholders' Deficit
Warrants exercise price	0.20	0.20
Maximum
Stockholders' Deficit
Warrants exercise price	0.85	0.85
Maximum | Common Stock | Cashless Warrants Exercise
Stockholders' Deficit
Warrants exercise price	$ 0.35	$ 0.35

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Commitments and Contingencies (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Jun. 30, 2022
Lease cost
Operating lease cost		$ 417,000	$ 439,000
Short-term lease cost		49,000	34,000
Variable lease cost		7,000	12,000
Sub-lease income	$ (36,000)	(72,000)	(73,000)
Total		401,000	412,000
Other information
Operating cash flows from operating leases		(457,000)	(469,000)
U.K
Lease cost
Operating lease cost		293,000	309,000
Short-term lease cost		49,000	34,000
Sub-lease income		(72,000)	(73,000)
Total		270,000	270,000
Other information
Operating cash flows from operating leases		$ (308,000)	$ (325,000)
Weighted-average remaining lease term - operating leases	8 years 2 months 12 days	8 years 2 months 12 days	8 years 8 months 12 days
Weighted-average discount rate - operating leases	12.00%	12.00%	12.00%
U.S
Lease cost
Operating lease cost		$ 124,000	$ 130,000
Variable lease cost		7,000	12,000
Total		131,000	142,000
Other information
Operating cash flows from operating leases		$ (148,000)	$ (144,000)
Weighted-average remaining lease term - operating leases	10 months 24 days	10 months 24 days	1 year 6 months
Weighted-average discount rate - operating leases	12.00%	12.00%	12.00%

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Commitments and Contingencies - Maturities of our operating leases (Details) $ in Thousands	Jun. 30, 2023 USD ($)
Commitments and Contingencies
Six months ended December 31, 2023	$ 466
Year ended December 31, 2024	838
Year ended December 31, 2025	633
Year ended December 31, 2026	633
Year ended December 31, 2027	633
Thereafter	6,947
Total	10,151
Less present value discount	(5,397)
Operating lease liabilities included in the Condensed Consolidated Balance Sheet at June 30, 2023	4,754
Sublease agreement
Commitments and Contingencies
Six months ended December 31, 2023	73
Year ended December 31, 2024	145
Year ended December 31, 2025	145
Year ended December 31, 2026	145
Thereafter	1,740
Total	$ 2,248

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Commitments and Contingencies - Additional Information (Details) £ in Millions							6 Months Ended
	Jul. 27, 2022 USD ($)	Jul. 27, 2022 EUR (€)	Nov. 04, 2021 USD ($)	Nov. 04, 2021 EUR (€)	May 14, 2018 USD ($)	May 14, 2018 GBP (£)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 EUR (€)	Jun. 30, 2022 USD ($)	Jun. 30, 2022 EUR (€)	Jun. 30, 2023 EUR (€)	Dec. 31, 2022 USD ($)
Commitments and Contingencies
Operating lease liabilities							$ 4,754,000
Lease, practical expedient, lessor single lease component [true false]							true				true
Operating lease, term of contract							20 years				20 years
ROU asset							$ 4,231,000					$ 4,189,000
Litigation settlement waiver of penalty	$ 147,000	€ 135,000
Loss contingency accrual							410,000				€ 377,000
Advent Bio services agreement
Commitments and Contingencies
Term of agreement					12 months	12 months
Advent Bio services agreement | Minimum
Commitments and Contingencies
Minimum required payments for this notice period					$ 5,600,000	£ 4.4
German tax authority
Commitments and Contingencies
Settlement expense							329,000	€ 277,000
Received tax bills									$ 241,000	€ 222,000
State and local jurisdiction
Commitments and Contingencies
Settlement expense							$ 251,000	€ 231,000
Additional late fees			$ 558,000	€ 513,000

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Subsequent Events (Details) $ / shares in Units, $ in Thousands		1 Months Ended			6 Months Ended
	Jul. 11, 2023 USD ($) item $ / shares	Aug. 09, 2023 USD ($) shares	Aug. 02, 2023 USD ($) shares	Jul. 31, 2023 USD ($) shares	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 shares	Dec. 31, 2022 USD ($)
Subsequent Events
Aggregate principal amount					$ 27,715		$ 22,454
Amount of funding received from contingent obligation					$ 4,050
Non-dilutive funding agreements
Subsequent Events
Amount of funding received from contingent obligation		$ 500
Common Stock
Subsequent Events
Number of shares issued during the period | shares						13,137,000
Series C convertible preferred stock | Common Stock
Subsequent Events
Number of shares converted | shares					300,000
Value of shares converted					$ 3,600
Number of shares issued on conversion | shares					6,400,000
Conversion ratio from preferred stock to common stock					0.04
Subsequent event
Subsequent Events
Amount of funding from the sale of shares and proceeds of debt arrangements and contingent liability obligations		$ 2,100
Subsequent event | July Convertible Note
Subsequent Events
Term of debt	1 year
Aggregate principal amount	$ 500
Cash proceeds	$ 500
Interest rate (in percent)	10.00%
Subsequent event | Common Stock
Subsequent Events
Number of shares issued during the period | shares			300,000
Cash payments			$ 200
Subsequent event | Common Stock | Lieu
Subsequent Events
Number of shares issued during the period | shares			4,900,000
Cash payments			$ 2,500
Interest			$ 100
Subsequent event | Series C convertible preferred stock
Subsequent Events
Preferred stock, shares issued | shares		84,000
Proceeds for preferred stock		$ 1,100
Value of shares converted				$ 400
Subsequent event | Series C convertible preferred stock | July Convertible Note
Subsequent Events
Conversion price | $ / shares	$ 12.50
Period of which preferred stock can convert into common shares	30 days
Number of common stock shares issued upon conversion | item	25
Subsequent event | Series C convertible preferred stock | Common Stock
Subsequent Events
Number of shares converted | shares				24,000
Number of shares issued on conversion | shares				600,000
Conversion ratio from preferred stock to common stock				0.04

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ (14,448)	$ (29,668)	$ (25,100)	$ (43,882)

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Insider Trading Arrangements	6 Months Ended
	Jun. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false