The following tables set forth the fair value of the GATX Corporation Master Trust's assets:


	Assets at Fair Value
	(Level 1) *
	December 31, 2025		December 31, 2024
Mutual funds	$	114,161,653	$	98,986,627
GATX common stock fund	31,944,636		30,869,976
Collective trusts	141,449,235		130,498,282
Total assets at fair value	$	287,555,524	$	260,354,885

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Tabular disclosure of fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

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+ Details