CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 29, 2026	Dec. 28, 2025
Current Assets:
Cash and cash equivalents	$ 401.7	$ 416.7
Accounts receivable, net	664.4	686.1
Short-term contract assets	63.1	72.8
Inventories, net	1,580.3	1,403.2
Prepaid expenses and other current assets	95.1	101.2
Total Current Assets	2,804.6	2,680.0
Property, plant and equipment, net	1,951.5	1,940.6
Goodwill	225.2	225.2
Other assets	252.8	253.8
Total Assets	5,234.1	5,099.6
Current Liabilities:
Accounts payable	654.9	568.2
Accrued liabilities	189.1	240.5
Short-term contract liabilities	154.4	146.4
Short-term debt and current portion of long-term debt	33.2	31.1
Other current liabilities	17.9	20.1
Total Current Liabilities	1,049.5	1,006.3
Long-term debt	1,794.7	1,718.3
Accrued postretirement benefits	154.2	158.5
Pension liabilities	42.3	41.4
Other long-term liabilities	307.1	258.4
Total Liabilities	3,347.8	3,182.9
ATI Stockholders’ Equity:
Preferred stock, par value $0.10: authorized-50,000,000 shares; issued-none	0.0	0.0
Common stock, par value $0.10: authorized-500,000,000 shares; issued-142,871,688 shares at March 29, 2026 and 142,871,688 shares at December 28, 2025; outstanding-136,467,940 shares at March 29, 2026 and 135,934,852 shares at December 28, 2025	14.3	14.3
Additional paid-in capital	1,766.7	1,884.6
Retained earnings	586.9	468.7
Treasury stock: 6,403,748 shares at March 29, 2026 and 6,936,836 shares at December 28, 2025	(534.5)	(502.7)
Accumulated other comprehensive loss, net of tax	(62.9)	(60.4)
Total ATI stockholders’ equity	1,770.5	1,804.5
Noncontrolling interests	115.8	112.2
Total Equity	1,886.3	1,916.7
Total Liabilities and Equity	$ 5,234.1	$ 5,099.6