On May 4, 2021, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Kuur Therapeutics, Inc., a Delaware corporation (“Kuur”) whereby it acquired 100% of the outstanding shares of Kuur (the “Merger”). Under the terms of the Merger Agreement, the Company’s wholly owned subsidiary, Athenex Pharmaceuticals LLC, a Delaware limited liability company, merged with and into Kuur, with Kuur surviving as a wholly owned subsidiary of the Company. Kuur is a leading developer of off-the-shelf CAR-NKT cell immunotherapies for the treatment of solid and hematological malignancies. The Company believes the acquisition strategically combines its TCR technology with the groundbreaking NKT cell platform to provide a solution that may address some of the known limitations associated with the first generation of cell therapy treatments focused on autologous CAR-T.

Pursuant to the Merger Agreement, an upfront fee of $70.0 million was paid to Kuur shareholders and its former employees and directors, comprised primarily of equity in the Company’s common stock. Additionally, Kuur shareholders and its former employees and directors are eligible to receive up to $115.0 million of milestone payments, which may be paid, at the Company’s sole discretion, in either cash or additional common stock of the Company (or a combination of both). On June 10, 2022, the Company's shareholders approved the issuance of shares of common stock as milestone payments under the Merger Agreement.

The Company identified the Merger as a business combination pursuant to ASC 805 and used the acquisition method of accounting to account for the transaction. The purchase price, after adjusted for closing conditions, consisted of 14,228,066 shares of the Company’s common stock issued at $3.71 per share with a fair value of $52.8 million, plus the fair value of the future milestone payments amounting to $19.8 million, recorded as contingent consideration. The Company recorded the fair value of this contingent consideration as a liability based on the probabilities of Kuur achieving the milestones and the present value of such payments. These inputs are not observable in the market and therefore are considered Level 3 inputs.

The Company estimated fair values on May 4, 2021 for the allocation of consideration to the net tangible and intangible assets acquired and liabilities assumed in connection with the Merger. During the measurement period, the Company continued to obtain information to assist in finalizing the fair value of assets acquired and liabilities assumed. Measurement period adjustments were applied in the reporting period in which the adjustments were determined. During the year ended December 31, 2021, the Company recorded a measurement period adjustment to reflect the estimated fair value of in-process research and development ("IPR&D"), as a result of changes in the underlying assumptions, including projected expenses and the estimated discount rate. This measurement period adjustment resulted in the increase of IPR&D of $1.4 million, a decrease in the deferred tax liability assumed of $0.2 million, and a decrease in goodwill of $1.6 million from the initial measurement reported as of June 30, 2021. To estimate the fair value of the identifiable intangible assets acquired, the Company used projected discounted cash flow method, which requires assumptions of projected revenues and expenses and an estimated discount rate, among other inputs, each of which is not observable in the market and thus are considered Level 3 inputs. The Company assumed $8.9 million of transaction incentive liability to Kuur’s key employees and independent company directors, of which $3.3 million was paid in cash and $5.6 million was paid in 1,373,601 shares of the

Company’s common stock at $4.11 per share. The following table summarizes the final purchase price allocation to the fair value of assets and liabilities acquired at the date of acquisition (in thousands):


Allocation of Consideration:
Stock issued (14,228,066 shares at $3.71)	$	52,786
Contingent consideration		19,839
Purchase price:	$	72,625
Net assets acquired:
Cash and cash equivalents	$	1,425
Prepaid expenses and other current assets		133
In-process research & development		64,900
Accounts payable		(39	)
Accrued expenses		(1,037	)
Deferred income tax liability		(12,543	)
Transaction incentive liability		(8,925	)
Total identifiable net assets		43,914
Goodwill		28,711
Total purchase price allocation	$	72,625

Goodwill in the amount of $28.7 million was recorded for the excess of the purchase price over the fair value of the assets acquired and liabilities assumed. The goodwill recorded in connection with this acquisition is not deductible for income tax purposes. A deferred tax liability in the amount of $12.5 million was recorded related to the future taxable income as a result of the book to tax basis difference arising from the IPR&D.

The fair value of the acquired IPR&D relates to two products, including (a) an allogenic product in which NKT cells are engineered with a CAR targeting CD19, and (b) an allogenic product in which NKT cells are engineered with a CAR targeting GPC3. These IPR&D projects were valued using an income approach, specifically a projected discounted cash flow method, adjusted for the probability of technical success (PTS). The projected discounted cash flow models used to estimate the Company’s IPR&D reflect significant assumptions regarding the estimates a market participant would make in order to evaluate a drug development asset including the following:

This acquisition was made to benefit the Company’s R&D efforts, providing synergies with other assets in the Company’s pipeline and therefore, is included in the Oncology Innovation Platform. The operating results of Kuur have been included within the Company’s Oncology Innovation Platform operating segment from the date of acquisition. Kuur added revenue of $0.1 for both the three and six months ended June 30, 2022 and contributed a net loss of $3.7 million and $6.1 million for the three and six months ended June 30, 2022, respectively. Kuur added revenue of $0 for both the three and six months ended June 30, 2021 and contributed a net loss of $0.6 million for the three and six months ended June 30, 2021.

No acquisition-related costs were incurred during the six months ended June 30, 2022. Acquisition-related costs, including legal, regulatory, and consulting costs, amounted to $3.5 million for the six months ended June 30, 2021, and are included within selling, general, and administrative expenses in the Company’s consolidated statement of operations and comprehensive loss.

The following table presents supplemental unaudited pro forma information for the acquisition as if it had occurred on January 1, 2021. The unaudited pro forma financial results for the six months ended June 30, 2022 do not include proforma adjustments, as the results of Kuur have been consolidated within the Company's financial statements for that period. The unaudited pro forma financial results for the three and six months ended June 30, 2021 include the following adjustments: (1) removal of direct acquisition-related costs which would not have been incurred had the businesses been owned on the beginning of the prior reporting period, (2) the

deferred tax effect if the intangible assets and purchase accounting were recorded as of the beginning of the prior reporting period, and (3) the removal of the change in fair value of Kuur convertible debt which was converted prior to the consummation of the acquisition. The pro forma results do not include any anticipated synergies or other expected benefits of the acquisitions. The unaudited pro forma financial information is for informational purposes only and is not necessarily indicative of either future results of operations of the combined entity or results that might have been achieved had the acquisitions been consummated as of the beginning of the prior reporting period. The following table presents the unaudited pro forma consolidated financial information for the three and six months ended June 30, 2022 (in thousands):


Unaudited pro forma financial information	Three Months Ended June 30,						Six Months Ended June 30,
(Athenex and Kuur Consolidated)	2022			2021			2022			2021
Consolidated revenue	$	31,516		$	20,698		$	60,658		$	59,850
Consolidated net loss	$	(32,157	)	$	(31,261	)	$	(49,577	)	$	(58,197	)