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Shareholders' Equity | 3 Months Ended
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Mar. 31, 2026
Stockholders' Equity Note [Abstract] |
Shareholders' Equity | Shareholders’ Equity AFG is authorized to issue 12.5 million shares of Voting Preferred Stock and 12.5 million shares of Nonvoting Preferred Stock, each without par value. Accumulated Other Comprehensive Income (Loss), Net of Tax (“AOCI”) Comprehensive income is defined as all changes in shareholders’ equity except those arising from transactions with shareholders. Comprehensive income includes net earnings and other comprehensive income (loss), which consists primarily of changes in net unrealized gains or losses on available for sale fixed maturity securities. The progression of the components of accumulated other comprehensive income (loss) is as follows (in millions):
|  |  | Other Comprehensive Income (Loss) |  |  |  |
| AOCI Beginning Balance |  | Pretax |  | Tax |  | Net of tax |  |  |  |  |  |  |  | AOCI Ending Balance
Three months ended March 31, 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net unrealized gains (losses) on securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) on securities arising during the period |  |  | $ | (103) |  |  | $ | 21 |  |  | $ | (82) |  |  |  |  |  |  |  |  |
Reclassification adjustment for realized (gains) losses included in net earnings (*) |  |  | 5 |  |  | (1) |  |  | 4 |  |  |  |  |  |  |  |  |
Total net unrealized gains (losses) on securities | $ | (22) |  |  | (98) |  |  | 20 |  |  | (78) |  |  |  |  |  |  |  |  | $ | (100) |
Net unrealized gains (losses) on cash flow hedges: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) on cash flow hedges arising during the period |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |
Reclassification adjustment for investment income included in net earnings (*) |  |  | 1 |  |  | — |  |  | 1 |  |  |  |  |  |  |  |  |
Total net unrealized gains (losses) on cash flow hedges | (2) |  |  | 1 |  |  | — |  |  | 1 |  |  |  |  |  |  |  |  | (1) |
Foreign currency translation adjustments | (28) |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  | (28) |
Pension and other postretirement plan adjustments | 2 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  | 2 |
Total | $ | (50) |  |  | $ | (97) |  |  | $ | 20 |  |  | $ | (77) |  |  |  |  |  |  |  |  | $ | (127) |
Three months ended March 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net unrealized gains (losses) on securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) on securities arising during the period |  |  | $ | 69 |  |  | $ | (14) |  |  | $ | 55 |  |  |  |  |  |  |  |  |
Reclassification adjustment for realized (gains) losses included in net earnings (*) |  |  | 7 |  |  | (1) |  |  | 6 |  |  |  |  |  |  |  |  |
Total net unrealized gains (losses) on securities | $ | (202) |  |  | 76 |  |  | (15) |  |  | 61 |  |  |  |  |  |  |  |  | $ | (141) |
Net unrealized gains (losses) on cash flow hedges: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains (losses) on cash flow hedges arising during the period |  |  | 1 |  |  | — |  |  | 1 |  |  |  |  |  |  |  |  |
Reclassification adjustment for investment income included in net earnings (*) |  |  | 3 |  |  | (1) |  |  | 2 |  |  |  |  |  |  |  |  |
Total net unrealized gains (losses) on cash flow hedges | (10) |  |  | 4 |  |  | (1) |  |  | 3 |  |  |  |  |  |  |  |  | (7) |
Foreign currency translation adjustments | (30) |  |  | (3) |  |  | — |  |  | (3) |  |  |  |  |  |  |  |  | (33) |
Pension and other postretirement plan adjustments | 2 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  | 2 |
Total | $ | (240) |  |  | $ | 77 |  |  | $ | (16) |  |  | $ | 61 |  |  |  |  |  |  |  |  | $ | (179) |
(*)The reclassification adjustments affected the following lines in AFG’s Statement of Earnings:
| OCI component |  | Affected line in the statement of earnings |
| Pretax - Net unrealized gains (losses) on securities |  | Realized gains (losses) on securities |
| Pretax - Net unrealized gains (losses) on cash flow hedges |  | Net investment income |
| Tax |  | Provision for income taxes |
Stock Incentive Plan Under AFG’s stock incentive plan, employees of AFG and its subsidiaries are eligible to receive equity awards in the form of stock options, stock appreciation rights, restricted stock awards, restricted stock units and stock awards. In the first three months of 2026, AFG issued 150,544 shares of restricted Common Stock (fair value of $132.82 per share) under the stock incentive plan. Total compensation expense related to the stock incentive plan was $5 million and $4 million in the first three months of 2026 and 2025, respectively.

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