On November 15, 2023 (the “Separation Date”), the Company completed the separation of its oncology business into Mural Oncology plc (“Mural”), a new, independent, publicly-traded company (the “Separation”). The Separation was effected by means of a distribution of all of the outstanding ordinary shares of Mural to the Company’s shareholders (the “Distribution”), in which each of the Company’s shareholders received one ordinary share, nominal value $0.01 per share, of Mural for every ten ordinary shares, par value $0.01 per share, of the Company held by such shareholder as of the close of business on November 6, 2023, the record date for the Distribution. The historical results of the oncology business have been reflected as discontinued operations in the Company’s accompanying condensed consolidated financial statements for the three and nine months ended September 30, 2023 and as of December 31, 2023.

In connection with the Separation, the Company entered into a separation agreement with Mural, dated as of November 13, 2023 (the “Separation Agreement”), that, among other things, sets forth the Company’s agreements with Mural regarding the principal actions taken or to be taken in connection with the Separation, including the Distribution. The Separation Agreement identified those assets to be transferred to, liabilities to be assumed by, and contracts to be assigned to Mural, including the operating lease for the office and laboratory space at 852 Winter Street in Waltham, Massachusetts, and it provided for when and how such transfers, assumptions and assignments were to occur. The purpose of the Separation Agreement was to provide Mural and the Company with those assets necessary to operate their respective businesses and to retain or assume the respective liabilities related to those assets.

Each of Mural and the Company agreed to releases with respect to pre-Distribution claims, and cross-indemnities with respect to post-Distribution claims, that were principally designed to place financial responsibility for the obligations and liabilities allocated to Mural under the Separation Agreement, and financial responsibility for the obligations and liabilities allocated to the Company under the Separation Agreement. The Company and Mural are also each subject to certain confidentiality restrictions and information sharing obligations.

The transfer of assets and liabilities to Mural was effected through a contribution in accordance with the Separation Agreement, as summarized below:


(In thousands)	November 15, 2023
ASSETS
Current Assets:
Cash and cash equivalents	$	275,000
Total current assets		275,000
Property, plant and equipment, net		10,096
Right-of-use assets		14,513
Goodwill		7,800
Deferred tax asset		1,799
Total assets	$	309,208
LIABILITIES
Current Liabilities:
Operating lease liabilities—short-term	$	6,036
Total current liabilities		6,036
Operating lease liabilities—long-term		9,412
Total liabilities		15,448
Net assets transferred to Mural	$	293,760

The Company determined that the Separation and the Distribution qualified as tax-free for U.S. federal income tax purposes, which required significant judgment by management. In making such determination, the Company applied U.S. federal tax law to relevant facts and circumstances and obtained: (i) a favorable private letter ruling from the Internal Revenue Service; (ii) a tax opinion; and (iii) other external tax advice related to the concluded tax treatment. If the Separation and Distribution were to ultimately fail to qualify for tax-free treatment for U.S. federal income tax purposes, the Company and/or its shareholders could be subject to significant liabilities, which could have material adverse impacts on the Company’s business, financial condition, results of operations and cash flows in future reporting

periods. Furthermore, other than taxes recorded on the transfer of IP, the Company determined that the Separation and related Distribution qualified as tax-free for Irish tax purposes, which required significant judgment by management. In making such determination, the Company applied Irish tax law to relevant facts and circumstances and obtained: (i) a tax opinion; and (ii) other external tax advice related to the concluded tax treatment. If the Separation and Distribution were to ultimately fail to qualify for tax-free treatment for Irish tax purposes, the Company and/or its shareholders could be subject to significant liabilities, which could have material adverse impacts on the Company’s business, financial condition, results of operations and cash flows in future reporting periods.

In connection with the Separation, the Company also entered into a tax matters agreement with Mural, dated as of November 13, 2023. The tax matters agreement governs the Company’s and Mural’s respective rights, responsibilities and obligations with respect to taxes (including taxes arising in the ordinary course of business and taxes, if any, incurred as a result of any failure of the Distribution, together with certain related transactions, to qualify as tax-free for U.S. federal income tax purposes), tax attributes, the preparation and filing of tax returns, the control of audits and other tax proceedings, and assistance and cooperation in respect of tax matters.

In connection with the Separation, the Company also entered into an employee matters agreement with Mural, dated as of November 13, 2023 (as amended, the “Employee Matters Agreement”). The Employee Matters Agreement governs the Company’s, Mural’s and their respective subsidiaries’ and affiliates’ rights, responsibilities and obligations after the Separation with respect to employment, benefits and compensation matters relating to employees and former employees (and their respective dependents and beneficiaries) who are or were associated with the Company, including those who became employees of Mural in connection with the Separation; the allocation of assets and liabilities generally relating to employees, employment or service-related matters and employee benefit plans; other human resources, employment and employee benefits matters; and the treatment of equity-based awards granted by the Company prior to the Separation.

The Company determined that the Separation met the criteria for classification of the oncology business as discontinued operations in accordance with Topic 205. The following summarizes the loss from discontinued operations for the three and nine months ended September 30, 2024 and 2023:


	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(In thousands)	2024			2023			2024			2023
Operating expenses from discontinued operations
Cost of goods manufactured	$	—		$	11		$	—		$	33
Research and development		481			32,262			6,910			94,692
Selling, general and administrative		—			13,073			—			29,219
Total operating expenses from discontinued operations		481			45,346			6,910			123,944
Operating loss from discontinued operations		(481	)		(45,346	)		(6,910	)		(123,944	)
Income tax benefit from discontinued operations		(67	)		(1,550	)		(1,076	)		(8,317	)
Net loss and comprehensive loss from discontinued operations	$	(414	)	$	(43,796	)	$	(5,834	)	$	(115,627	)

There were no assets and $4.5 million of liabilities related to the Separation at December 31, 2023. All assets related to the Separation were transferred to Mural as of the Separation Date. The $4.5 million of liabilities classified as “Liabilities related to discontinued operations” in the accompanying condensed consolidated balance sheet related to bonus amounts accrued for employees that transferred to Mural during 2023 and through the Separation Date that were paid by the Company in the first quarter of 2024, in accordance with the terms of the Employee Matters Agreement.


	Nine Months Ended
(In thousands)	September 30, 2023
OPERATING ACTIVITIES:
Depreciation	$	365
Share-based compensation expense		5,119
Right-of-use assets		4,289
Operating lease liabilities		(4,391	)

INVESTING ACTIVITIES:
Additions of property, plant and equipment	$	(655	)