In October 2021, the Company entered into an option and license agreement with Beam Therapeutics Inc. (Beam), pursuant to which the Company was granted a non-exclusive license to use Beam’s proprietary CRISPR Cas12b nuclease editing technology to research, develop, and commercialize engineered cell therapy products that (i) are directed to certain antigen targets, with respect to the Company’s allogeneic T cell programs, or (ii) comprise certain human cell types, with respect to the Company’s stem cell-derived programs. The Company made an upfront payment of $50.0 million to Beam, which was recorded in research and development expense for the year ended December 31, 2021. Additionally, under the terms of the agreement, the Company may be obligated to pay up to $65.0 million for each licensed product in specified developmental and commercial milestone payments and royalties on licensed products. At the time of the entry into the option and license agreement, a member of the Company’s board of directors was a beneficial owner of greater than 10% of the outstanding shares of Beam. This director is also affiliated with a member of the board of directors of Beam.

In March 2019, the Company entered into an exclusive license agreement with Harvard to access certain intellectual property for the development of hypoimmune-modified cells.

The Company paid to Harvard aggregate consideration of $12.0 million, comprising $9.0 million in common stock and $3.0 million in cash. Under the terms of the agreement, the Company may be required to pay to Harvard up to an aggregate of $175.0 million in success payments, payable in cash, based on increases in the fair value of the Company’s common stock. The potential Harvard Success Payments are based on multiples of increased value ranging from 5x to 40x, based on a comparison of the fair market value of the Company’s common stock relative to the original issuance price of $4.00 per share at ongoing pre-determined valuation measurement dates. The Harvard Success Payments can be achieved over a maximum of 12 years from the effective date of the agreement. If a higher success payment tier is first met at the same time a lower tier is first met, both tiers will be owed. Any previous success payments made to Harvard would be credited against the success payment owed as of any valuation measurement date so that Harvard does not receive multiple success payments in connection with the same threshold. As of December 31, 2023, a Harvard Success Payment had not been triggered.

The following table summarizes the potential success payments and common stock price required for payment:


Multiple of Equity Value at Issuance	5x		10x		20x		30x		40x
Per share common stock price required for payment	$	20.00	$	40.00	$	80.00	$	120.00	$	160.00
Success payment(s) (in millions)	$	5.0	$	15.0	$	30.0	$	50.0	$	75.0

The Harvard Success Payment liabilities are carried at fair value, with the initial value and changes in fair value recognized in research and development related success payments and contingent consideration. As of December 31, 2023 and December 31, 2022, the estimated fair value of the Harvard Success Payment liability was $1.6 million and $2.0, respectively, and was recorded in long-term liabilities. In connection with the change in the estimated fair value of the Harvard Success Payment liability, the Company recognized gains of $0.3 million and $12.2 million, and an expense of $2.4 million, for the years ended December 31, 2023, 2022, and 2021, respectively.