Transaction Details

Footnotes

Represents the deferred stock units ("DSUs") and dividend equivalents payable upon the reporting person's separation from service. The reporting person did not stand for re-election at Allison Transmission Holdings, Inc.'s (the "Company") 2025 annual meeting of stockholders and his term ended on May 7, 2025. | Includes 29,696 DSUs and 1,888 related dividend equivalents. | Each DSU is the economic equivalent of one share of the Company's common stock. The DSUs become payable, in common stock, or at the Company's election cash, at the earlier of the reporting person's separation from service or change in control. DSUs earn dividend equivalents when dividends are declared on the Company's common stock. | On May 10, 2018, the reporting person was granted 2,859 DSUs that vested on May 8, 2019. | Each dividend equivalent right is the economic equivalent of one share of the Company's common stock. | The dividend equivalent rights accrued on previously awarded DSUs and were payable on May 7, 2025, the date of the reporting person's separation from service. | On August 10, 2018, the reporting person was granted 477 DSUs that vested on August 10, 2018. | On November 12, 2018 the reporting person was granted 473 DSUs that vested on November 12, 2018. | On February 11, 2019, the reporting person was granted 464 DSUs that vested on February 11, 2019. | On May 8, 2019 the reporting person was granted 482 DSUs that vested on May 8, 2019. | On May 9, 2019, the reporting person was granted 2,880 DSUs that vested on May 6, 2020. | On August 9, 2019, the reporting person was granted 245 DSUs that vested on August 9, 2019. | On November 8, 2019, the reporting person was granted 227 DSUs that vested on November 8, 2019. | On February 10, 2020, the reporting person was granted 246 DSUs that vested on February 10, 2020. | On May 6, 2020, the reporting person was granted 298 DSUs that vested on May 6, 2020. | On May 7, 2020, the reporting person was granted 3,600 DSUs that vested on May 5, 2021. | On August 7, 2020, the reporting person was granted 283 DSUs that vested on August 7, 2020. | On November 6, 2020, the reporting person was granted 280 DSUs that vested on November 6, 2020. | On February 8, 2021, the reporting person was granted 242 DSUs that vested on February 8, 2021. | On May 5, 2021, the reporting person was granted 249 DSUs that vested on May 5, 2021. | On May 6, 2021, the reporting person was granted 2,927 DSUs that vested on May 4, 2022. | On August 6, 2021, the reporting person was granted 633 DSUs that vested on August 6, 2021. | On November 5, 2021, the reporting person was granted 689 DSUs that vested on November 5, 2021. | On February 4, 2022, the reporting person was granted 631 DSUs that vested on February 4, 2022. | On May 4, 2022, the reporting person was granted 614 DSUs that vested on May 4, 2022. | On May 5, 2022, the reporting person was granted 3,746 DSUs that vested on May 3, 2023. | On August 5, 2022, the reporting person was granted 656 DSUs that vested on August 5, 2022. | On November 4, 2022, the reporting person was granted 577 DSUs that vested on November 4, 2022. | On February 3, 2023, the reporting person was granted 538 DSUs that vested on February 3, 2023. | On May 3, 2023, the reporting person was granted 547 DSUs that vested on May 3, 2023. | On May 4, 2023, the reporting person was granted 3,146 DSUs that vested on May 8, 2024. | On August 3, 2023, the reporting person was granted 547 DSUs that vested on August 3, 2023. | On November 3, 2023, the reporting person was granted 614 DSUs that vested on November 3, 2023. | On February 5, 2024, the reporting person was granted 526 DSUs that vested on February 5, 2024.