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Profits Interest Incentive Plan | 3 Months Ended
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Mar. 31, 2021
Share-based Payment Arrangement [Abstract] |
Profits Interest Incentive Plan | 7. Profits Interest Incentive Plan Prior to the Corporate Reorganization in July 2020, the Company maintained a Profits Interest Incentive Plan (the “Plan”) for selected employees, consultants and other service providers. The Class B units generally vested over four years, were subject to continued service requirements, and only provide the participants with benefits (in the form of distributions) if the distributions from BioAtla exceed specified threshold values. Generally, upon termination of services, all unvested Class B units were forfeited to the Company and the Company had the right, but not the obligation, to repurchase the vested Class B units within two years at the termination date fair value. The Class B unit repurchase would be settled in cash, at all times at the option of the Company, and the holder did not have the right to put the Class B units to the Company under any condition. Vested Class B units that are neither repurchased by the Company nor forfeited remained subject to the terms of the Company’s operating agreement. The Class B units were not subject to sale, assignment, transfer, pledge, or allowed to be otherwise encumbered or disposed of without prior written consent of the Company. The Class B units were liability awards pursuant to authoritative guidance, which required the Company to record a liability based on the fair value of the Class B units as of each reporting period. Through the date of the Corporate Reorganization, the fair value of the liability awards was determined based on the Company’s estimated enterprise value, which was allocated based on a hybrid model that, in addition to the option pricing model, considering the Company’s expected IPO. Under the option pricing method, units were valued by creating a series of call options with exercise prices based on the liquidation preferences and conversion terms of each unit class. The allocation of equity-based compensation for all Class B units is as follows (in thousands):
|  | Three Months Ended March 31, 2020 |
Research and development |  | $ | (2,523 | )
General and administrative |  |  | (3,180 | )
Total |  | $ | (5,703 | )

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