ATI Inc.

NYSE-ATI

Assets	LTM	Dec '24	Dec '23	Dec '22	Dec '21	Dec '20	Dec '19	Dec '18	Dec '17	Dec '16	Dec '15
Cash and Cash Equivalents	372.2	721.2	743.9	584	687.7	645.9	490.8	382	141.6	229.6	149.8
Cash and Cash Equivalents
Total Cash and Cash Equivalents	372.2	721.2	743.9	584	687.7	645.9	490.8	382	141.6	229.6	149.8
Accounts Receivable	709.9	709.2	625	579.2	470	345.8	554.1	527.8	545.3	452.1	400.3
Accounts Receivable, Net
Total Trade Receivables	709.9	709.2	625	579.2	470	345.8	554.1	527.8	545.3	452.1	400.3
Inventories	1,405.6	1,353	1,247.5	1,195.7	1,046.3	997.1	1,155.3	1,211.1	1,176.1	1,037	1,271.6
Inventories, Net
Other Current Assets	172.1	161.6	121.3	117.5	102.7	77.2	102.8	125.8	52.7	47.8	45.9
Short-Term Contract Assets
Deferred Income Taxes
Prepaid Expenses and Other Current Assets
Total Current Assets	2,659.8	2,945	2,737.7	2,476.4	2,306.7	2,066	2,303	2,246.7	1,915.7	1,766.5	1,867.6
Total Current Assets
Net Property, Plant & Equipment	1,853.2	1,776.9	1,665.9	1,549.1	1,528.5	1,469.2	2,450.1	2,475	2,495.7	2,498.9	2,928.2
Property, Plant and Equipment, Net
Goodwill	225.2	227.2	227.2	227.2	227.9	240.7	525.8	534.7	531.4	641.9	651.4
Goodwill
Other Long-Term Assets	264.5	281.5	354.3	192.9	222.1	259	355.7	245.4	242.6	262.7	304.5
Deferred Income Taxes
Prepaid Pension Asset
Deferred Income Taxes
Other Assets
Total Assets	5,002.7	5,230.6	4,985.1	4,445.6	4,285.2	4,034.9	5,634.6	5,501.8	5,185.4	5,170	5,751.7
Total Assets

Liabilities	LTM	Dec '24	Dec '23	Dec '22	Dec '21	Dec '20	Dec '19	Dec '18	Dec '17	Dec '16	Dec '15
Accounts Payable	493.5	609.1	524.8	553.3	375.5	290.6	521.2	498.8	420.1	294.3	380.8
Accounts Payable
Accrued Expenses	—	—	—	—	—	—	—	—	282.4	309.3	301.8
Accrued Liabilities
Short-Term Debt	191.7	180.4	31.9	41.7	131.3	17.8	11.5	6.6	10.1	105.1	3.9
Short-Term Debt and Current Portion of Long-Term Debt
Unearned Revenue	159.2	169.4	163.6	149.1	116.2	111.8	78.7	71.4	—	—	—
Short-Term Contract Liabilities
Other Current Liabilities	218.7	249.6	256.8	219.8	233.4	233.1	237.8	260.1	—	—	—
Deferred Income Taxes
Other Current Liabilities
Total Current Liabilities	1,063.1	1,208.5	977.1	963.9	856.4	653.3	849.2	836.9	712.6	708.7	686.5
Total Current Liabilities
Long-Term Debt	1,715.2	1,714.9	2,147.7	1,706.3	1,711.6	1,550	1,387.4	1,535.5	1,530.6	1,771.9	1,491.8
Long-Term Debt
Other Long-Term Liabilities	398.6	352	379.8	618.2	884.5	1,190.2	1,204.8	1,137.8	1,097.7	1,244.6	1,376.9
Deferred Income Taxes
Retirement Benefits
Accrued Postretirement Benefits
Pension Liabilities
Deferred Income Taxes
Other Long-Term Liabilities
Total Long-Term Liabilities	2,113.8	2,066.9	2,527.5	2,324.5	2,596.1	2,740.2	2,592.2	2,673.3	2,628.3	3,016.5	2,868.7
Total Liabilities	3,176.9	3,275.4	3,504.6	3,288.4	3,452.5	3,393.5	3,441.4	3,510.2	3,340.9	3,725.2	3,555.2
Total Liabilities

Equity	LTM	Dec '24	Dec '23	Dec '22	Dec '21	Dec '20	Dec '19	Dec '18	Dec '17	Dec '16	Dec '15
Common Stock	14.3	14.3	13.2	13.1	12.7	12.7	12.7	12.7	12.7	11	11
Common Stock
Treasury Stock	-507.4	-82.6	-184	-480.9	-4.8	—	-18.2	-30.6	-26.1	-28	-21.3
Treasury Stock
Additional Paid-in Capital	1,886.8	1,943.9	1,697.1	1,668.1	1,596.7	1,625.5	1,618	1,615.4	1,596.3	1,188.8	1,161.7
Additional Paid-in Capital
Accumulated Other Comprehensive Income	-58.9	-89.5	-83.2	-67.4	-991.7	-1,223.6	-1,201.7	-1,133.8	-1,027.8	-1,093.7	-1,014.5
Accumulated Other Comprehensive Loss, Net of Tax
Retained Earnings	372.2	64.3	-70.1	-87	72.7	106.5	1,679.3	1,422	1,184.3	1,277.1	1,945.9
Retained Earnings
Total Common Shareholders' Equity	1,707	1,850.4	1,373	1,045.9	685.6	521.1	2,090.1	1,885.7	1,739.4	1,355.2	2,082.8
Total ATI Stockholders' Equity
Minority Interests and Other	118.8	104.8	107.5	111.3	147.1	120.3	103.1	105.9	105.1	89.6	113.7
Redeemable Noncontrolling Interest
Noncontrolling Interests
Total Shareholders' Equity	1,825.8	1,955.2	1,480.5	1,157.2	832.7	641.4	2,193.2	1,991.6	1,844.5	1,444.8	2,196.5
Total Liabilities and Shareholders' Equity	5,002.7	5,230.6	4,985.1	4,445.6	4,285.2	4,034.9	5,634.6	5,501.8	5,185.4	5,170	5,751.7
Total Liabilities and Equity