X0607 3 2026-08-05 0 0000040211 GATX CORP GATX 0002147835 Doygun Eren false 233 S. WACKER DR. CHICAGO IL 60606 false true false false SVP Chief Plan. & Invest. Off. Common Stock 5323.00 D Common Stock 401(k) 210.00 I 401(k) 2020 NQ Stock Option (Right to Buy) 77.07 2021-01-31 2027-01-31 Common Stock 1000.00 D 2021 NQ Stock Option (Right to Buy) 91.36 2022-01-29 2028-01-29 Common Stock 1600.00 D 2022 NQ Stock Option (Right to Buy) 103.15 2023-01-28 2029-01-28 Common Stock 1500.00 D 2023 NQ Stock Option (Right to Buy) 113.28 2024-01-26 2030-01-26 Common Stock 1300.00 D 2024 NQ Stock Option (Right to Buy) 126.468 2025-01-25 2031-01-25 Common Stock 1300.00 D 2025 NQ Stock Option (Right to Buy) 166.193 2026-01-30 2032-01-30 Common Stock 1300.00 D 2026 NQ Stock Option (Right to Buy) 196.40 2027-02-23 2033-02-23 Common Stock 2400.00 D 33.33% of Stock Option granted may be exercised commencing 1 year from the date of the grant, an additional 33.33% commencing 2 years from the date of the grant and the remaining 33.34% commencing 3 years from the date of the grant. Exhibit List: Exhibit 24 - Power of Attorney Lisa Ibarra, by Power of Attorney on behalf of Eren Doygun 2026-08-13