| Accumulated Other Comprehensive Income (Loss) |
Accumulated Other Comprehensive Income (Loss) The changes in AOCI by component, net of tax, for the quarter ended June 28, 2026 were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (In millions) | Post-
retirement
benefit plans | | Currency
translation
adjustment | | Derivatives | | Deferred Tax Asset Valuation Allowance | | Total | | Attributable to ATI: | | | | | | | | | | | | | | | Balance, March 29, 2026 | $ | (31.2) | | | $ | (55.2) | | | $ | 0.2 | | | $ | 23.3 | | | $ | (62.9) | | | OCI before reclassifications | | — | | | | (0.4) | | | | (2.3) | | | | — | | | (2.7) | | | Amounts reclassified from AOCI | (a) | 1.1 | | | | — | | | (b) | (0.3) | | | | — | | | 0.8 | | | Net current-period OCI | | 1.1 | | | | (0.4) | | | | (2.6) | | | | — | | | (1.9) | | | Balance, June 28, 2026 | $ | (30.1) | | | $ | (55.6) | | | $ | (2.4) | | | $ | 23.3 | | | $ | (64.8) | | | Attributable to noncontrolling interests: | | | | | | | | | | | | | | | Balance, March 29, 2026 | $ | — | | | $ | 13.3 | | | $ | — | | | $ | — | | | $ | 13.3 | | | OCI before reclassifications | | — | | | | 2.4 | | | | — | | | | — | | | 2.4 | | | Amounts reclassified from AOCI | | — | | | | — | | | | — | | | | — | | | — | | | Net current-period OCI | | — | | | | 2.4 | | | | — | | | | — | | | 2.4 | | | Balance, June 28, 2026 | $ | — | | | $ | 15.7 | | | $ | — | | | $ | — | | | $ | 15.7 | |
The changes in AOCI by component, net of tax, for the year-to-date period ended June 28, 2026 were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (In millions) | Post-
retirement
benefit plans | | Currency
translation
adjustment | | Derivatives | | Deferred Tax Asset Valuation Allowance | | Total | | Attributable to ATI: | | | | | | | | | | | | | | | Balance, December 28, 2025 | $ | (32.2) | | | $ | (52.1) | | | $ | 0.6 | | | $ | 23.3 | | | $ | (60.4) | | | OCI before reclassifications | | — | | | | (3.5) | | | | (0.5) | | | | — | | | (4.0) | | | Amounts reclassified from AOCI | (a) | 2.1 | | | | — | | | (b) | (2.5) | | | | — | | | (0.4) | | | Net current-period OCI | | 2.1 | | | | (3.5) | | | | (3.0) | | | | — | | | (4.4) | | | Balance, June 28, 2026 | $ | (30.1) | | | $ | (55.6) | | | $ | (2.4) | | | $ | 23.3 | | | $ | (64.8) | | | Attributable to noncontrolling interests: | | | | | | | | | | | | | | | Balance, December 28, 2025 | $ | — | | | $ | 12.0 | | | $ | — | | | $ | — | | | $ | 12.0 | | | OCI before reclassifications | | — | | | | 3.7 | | | | — | | | | — | | | 3.7 | | | Amounts reclassified from AOCI | | — | | | | — | | | | — | | | | — | | | — | | | Net current-period OCI | | — | | | | 3.7 | | | | — | | | | — | | | 3.7 | | | Balance, June 28, 2026 | $ | — | | | $ | 15.7 | | | $ | — | | | $ | — | | | $ | 15.7 | |
(a)Amounts were included in net periodic benefit cost for pension and other postretirement benefit plans (see Note 12). (b)Amounts related to derivatives are included in sales, cost of goods sold or interest expense in the period or periods the hedged item affects earnings (see Note 9). The changes in AOCI by component, net of tax, for the quarter ended June 29, 2025 were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (In millions) | Post-
retirement
benefit plans | | Currency
translation
adjustment | | Derivatives | | Deferred Tax Asset Valuation Allowance | | Total | | Attributable to ATI: | | | | | | | | | | | | | | | Balance, March 30, 2025 | $ | (29.6) | | | $ | (68.5) | | | $ | 3.2 | | | $ | 23.3 | | | $ | (71.6) | | | OCI before reclassifications | | — | | | | 16.5 | | | | (3.4) | | | | — | | | 13.1 | | | Amounts reclassified from AOCI | (a) | 0.8 | | | (b) | — | | | (d) | 1.2 | | | | — | | | 2.0 | | | Net current-period OCI | | 0.8 | | | | 16.5 | | | | (2.2) | | | | — | | | 15.1 | | | Balance, June 29, 2025 | $ | (28.8) | | | $ | (52.0) | | | $ | 1.0 | | | $ | 23.3 | | | $ | (56.5) | | | Attributable to noncontrolling interests: | | | | | | | | | | | | | | | Balance, March 30, 2025 | $ | — | | | $ | 6.9 | | | $ | — | | | $ | — | | | $ | 6.9 | | | OCI before reclassifications | | — | | | | 1.8 | | | | — | | | | — | | | 1.8 | | | Amounts reclassified from AOCI | | — | | | (c) | — | | | | — | | | | — | | | — | | | Net current-period OCI | | — | | | | 1.8 | | | | — | | | | — | | | $ | 1.8 | | | Balance, June 29, 2025 | $ | — | | | $ | 8.7 | | | $ | — | | | $ | — | | | $ | 8.7 | |
The changes in AOCI by component, net of tax, for the year-to-date period ended June 29, 2025 were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (In millions) | Post-
retirement
benefit plans | | Currency
translation
adjustment | | Derivatives | | Deferred Tax Asset Valuation Allowance | | Total | | Attributable to ATI: | | | | | | | | | | | | | | | Balance, December 29, 2024 | $ | (30.5) | | | $ | (79.8) | | | $ | (2.5) | | | $ | 23.3 | | | $ | (89.5) | | | OCI before reclassifications | | — | | | | 22.7 | | | | 1.5 | | | | — | | | 24.2 | | | Amounts reclassified from AOCI | (a) | 1.7 | | | (b) | 5.1 | | | (d) | 2.0 | | | | — | | | 8.8 | | | Net current-period OCI | | 1.7 | | | | 27.8 | | | | 3.5 | | | | — | | | 33.0 | | | Balance, June 29, 2025 | $ | (28.8) | | | $ | (52.0) | | | $ | 1.0 | | | $ | 23.3 | | | $ | (56.5) | | | Attributable to noncontrolling interests: | | | | | | | | | | | | | | | Balance, December 29, 2024 | $ | — | | | $ | 5.7 | | | $ | — | | | $ | — | | | $ | 5.7 | | | OCI before reclassifications | | — | | | | 3.0 | | | | — | | | | — | | | 3.0 | | | Amounts reclassified from AOCI | | — | | | (c) | — | | | | — | | | | — | | | — | | | Net current-period OCI | | — | | | | 3.0 | | | | — | | | | — | | | $ | 3.0 | | | Balance, June 29, 2025 | $ | — | | | $ | 8.7 | | | $ | — | | | $ | — | | | $ | 8.7 | |
(a)Amounts were included in net periodic benefit cost for pension and other postretirement benefit plans (see Note 12). (b)Amounts were included in gain/loss of asset sales and sales of businesses, net, as part of the loss on sale of the Birmingham, UK and Dusseldorf, Germany operations (see Note 5). (c)No amounts were reclassified to earnings. (d)Amounts related to derivatives are included in sales, cost of goods sold or interest expense in the period or periods the hedged item affects earnings (see Note 9). Other comprehensive income (loss) amounts (OCI) reported above by category are net of applicable income tax expense (benefit) for each period presented. Income tax expense (benefit) on OCI items is recorded as a change in a deferred tax asset or liability. Amounts recognized in OCI include the impact of any deferred tax asset valuation allowances, when applicable. Foreign currency translation adjustments, including those pertaining to noncontrolling interests, are generally not adjusted for income taxes as they relate to indefinite investments in non-U.S. subsidiaries.
Reclassifications out of AOCI for the quarter and year-to-date periods ended June 28, 2026 and June 29, 2025 were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (In millions) | Quarter ended | | Year-to-date period ended | | | Details about AOCI Components | June 28, 2026 | | June 29, 2025 | | June 28, 2026 | | June 29, 2025 | | Affected line item in the statements
of operations | | Postretirement benefit plans | | | | | | | | | | | Prior service (cost) credit | $ | — | | | 0.1 | | | $ | (0.1) | | | 0.2 | | (a) | | | Actuarial losses | (1.3) | | | (1.3) | | | (2.6) | | | (2.6) | | (a) | | | (1.3) | | | (1.2) | | | (2.7) | | | (2.4) | | (d) | Total before tax | | (0.2) | | | (0.4) | | | (0.6) | | | (0.7) | | | Tax benefit (e) | | $ | (1.1) | | | $ | (0.8) | | | $ | (2.1) | | | $ | (1.7) | | | Net of tax | | | | | | | | | | | | Currency translation adjustment | $ | — | | | $ | — | | | $ | — | | | $ | (5.1) | | (b,d) | | | | | | | | | | | | | Derivatives | | | | | | | | | | | Nickel and other raw material contracts | $ | 1.5 | | | $ | (1.6) | | | $ | 2.0 | | | $ | (2.9) | | (c) | | | Natural gas contracts | (1.2) | | | — | | | 0.9 | | | 0.2 | | (c) | | | Foreign exchange contracts | 0.1 | | | — | | | 0.4 | | | 0.1 | | (c) | | | | | | | | | | | | | 0.4 | | | (1.6) | | | 3.3 | | | (2.6) | | (d) | Total before tax | | 0.1 | | | (0.4) | | | 0.8 | | | (0.6) | | | Tax benefit (e) | | $ | 0.3 | | | $ | (1.2) | | | $ | 2.5 | | | $ | (2.0) | | | Net of tax |
(a)Amounts are reported in nonoperating retirement benefit expense (see Note 12). (b)Amounts in 2025 were included in gain/loss on asset sales and sales of businesses, net, as part of the loss on sale of the Birmingham, UK and Dusseldorf, Germany operations (see Note 5). (c)Amounts related to derivatives are included in sales or cost of goods sold in the period or periods the hedged item affects earnings. (d)For pre-tax items, positive amounts are income and negative amounts are expense in terms of the impact to net income. Tax effects are presented in conformity with ATI’s presentation in the consolidated statements of operations. (e)These amounts exclude the impact of any deferred tax asset valuation allowances, when applicable.
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