X0508 4 2025-02-04 false 0000040211 GATX CORP GATX 0001632764 Young Jeffery R. 233 S. WACKER DR. CHICAGO IL 60606 false true false false SVP, Chief Tax Officer false Common Stock 2025-02-04 4 M false 867.00 103.15 A 7932.00 D Common Stock 2025-02-04 4 M false 1200.00 113.28 A 9132.00 D Common Stock 2025-02-04 4 M false 900.00 126.468 A 10032.00 D Common Stock 2025-02-04 4 F false 2373.00 164.79 D 7659.00 D Common Stock 2025-02-05 4 S false 293.00 164.6155 D 7366.00 D Common Stock 2025-02-05 4 S false 4.00 165.813 D 7362.00 D Common Stock 401(k) 271.00 I 401(k) 2022 NQ Stock Option (Right to Buy) 103.15 2025-02-04 4 M false 867.00 0.00 D 2023-01-28 2029-01-28 Common Stock 867.00 0.00 D 2023 NQ Stock Option (Right to Buy) 113.28 2025-02-04 4 M false 1200.00 0.00 D 2024-01-26 2030-01-26 Common Stock 1200.00 1200.00 D 2024 NQ Stock Option (Right to Buy) 126.468 2025-02-04 4 M false 900.00 0.00 D 2025-01-25 2031-01-25 Common Stock 900.00 1800.00 D Represents the weighted average sale price. The highest price at which shares were sold was $164.8946 and the lowest price at which shares were sold was $164.3300. Information regarding the number of shares sold at each separate price will be made available from the reporting person upon request by the SEC, the issuer or its shareholders. Lisa M. Ibarra, by Power of Attorney on behalf of Jeffery R. Young 2025-02-06