X0508 4 2026-03-01 0 0001320461 Cooper-Standard Holdings Inc. CPS 0001762564 Clark Patrick 40300 TRADITIONS DRIVE NORTHVILLE MI 48168 0 1 0 0 See Remarks 0 Common stock 2026-03-01 4 M 0 6826 A 6826 D Common stock 2026-03-01 4 F 0 2977 38.44 D 3849 D Common stock 2026-03-01 4 M 0 6234 A 10083 D Common stock 2026-03-01 4 F 0 2719 38.44 D 7364 D Common stock 2026-03-01 4 M 0 7026 A 14390 D Common stock 2026-03-01 4 F 0 3064 38.44 D 11326 D Common stock 2026-03-01 4 G 0 11326 0 D 0 D Common stock 2026-03-01 4 G 0 11326 0 A 53820 I By Trust Restricted Stock Units 2026-03-01 4 M 0 6826 0 D Common stock 6826 0 D Restricted Stock Units 2026-03-01 4 M 0 6234 0 D Common stock 6234 6235 D Restricted Stock Units 2026-03-01 4 M 0 7026 0 D Common stock 7026 14054 D The company settles such RSUs by making an appropriate book entry in the reporting person's name for a number of shares equal to the number of RSU's that have vested. Revocable family trust for which Reporting Person is the sole trustee. These are time-based restricted stock units (RSUs) granted to the reporting person on February 15, 2023, under Cooper-Standard Holdings Inc. 2021 Omnibus Incentive Plan. Subject to the reporting person's continued employment with the company or its affiliates through the applicable vesting date, one third of these RSUs shall vest and no longer be subject to forfeiture on each of the first three anniversaries of March 1, 2023 These are time-based restricted stock units (RSUs) granted to the reporting person on February 14, 2024, under Cooper-Standard Holdings Inc. 2021 Omnibus Incentive Plan , as amended and restated. Subject to the reporting person's continued employment with the company or its affiliates through the applicable vesting date, one third of these RSUs shall vest and no longer be subject to forfeiture on each of the first three anniversaries of March 1, 2024. These are time-based restricted stock units (RSUs) granted to the reporting person on February 12, 2025, under Cooper-Standard Holdings Inc. 2021 Omnibus Incentive Plan, as amended and restated. Subject to the reporting person's continued employment with the company or its affiliates through the applicable vesting date, one third of these RSUs shall vest and no longer be subject to forfeiture on each of the first three anniversaries of the date of March 1, 2025. President, Sealing Systems and Chief Manufacturing Officer /s/ Denise Balog, on behalf of Patrick Clark, under Power of Attorney 2026-03-03