Company: ATRA
Filing Date: 2025-03-07
Form Type: 10-K
Source: 0000950170-25-035507
Chunk: 233

Company: Atara Biotherapeutics, Inc.
Filing Date: 2025-03-07
Form: 10-K
Item: Item 1B
Chunk 233
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 seven to ten years. We have granted performance-based stock options to certain of our employees that provide for the issuance of a right to purchase a share of common stock if specified Company performance criteria related to tab-cel regulatory milestones are achieved. The vesting of performance-based stock options depends upon if and when the performance criteria are achieved, as well as the employee’s continuous service, as defined in the 2014 EIP and 2024 EIP, through the date of vesting.As of December 31, 2024, a total of 554,974 shares of common stock were reserved for issuance under the 2014 EIP, of which all were subject to outstanding options and RSUs, including performance-based awards. As of December 31, 2024, a total of 392,571 shares of common stock were reserved for issuance under the 2024 EIP, of which 347,571 shares were available for future grant and 45,000 shares were subject to outstanding options and RSUs. . In February 2018, we adopted the 2018 Inducement Plan (Inducement Plan), under which we may grant options, stock appreciation rights, RSAs and RSUs to new employees. In November 2020, September 2021 and June 2022, we amended the Inducement Plan to reserve an additional 60,000 shares of the Company’s common stock for issuance under the Inducement Plan in each case. As of December 31, 2024, 170,873 shares of common stock were reserved for issuance under the Inducement Plan, of which 122,234 shares were available for future grant and 48,639 shares were subject to outstanding options and RSUs. 

124

Restricted Stock Units The following is a summary of RSU activity under our 2014 EIP, 2024 EIP and Inducement Plan:

        RSUs

        Shares

        WeightedAverageGrant DateFair Value

        Balance as of December 31, 2023

        250,709

        $
        158.00

        Granted

        548,990

        $
        13.76

        Forfeited

        (70,120
        )
         
        $
        86.29

        Vested

        (315,109
        )
         
        $
        79.06

        Balance as of December 31, 2024

        414,470