The Allstate Corporation Investor Supplement Third Quarter 2024 The condensed consolidated financial statements and financial exhibits included herein are unaudited and should be read in conjunction with the consolidated financial statements and notes thereto included in the most recent Annual Report on Form 10-K and Quarterly Reports on Form 10-Q. The results of operations for interim periods should not be considered indicative of results to be expected for the full year. Measures used in these financial statements and exhibits that are not based on generally accepted accounting principles ("non-GAAP") are denoted with an asterisk (*). These measures are defined on the pages "Definitions of Non-GAAP Measures" and are reconciled to the most directly comparable generally accepted accounting principles ("GAAP") measure herein. Exhibit 99.2

The Allstate Corporation Investor Supplement - Third Quarter 2024 Table of Contents Consolidated Operations Protection Services Condensed Consolidated Statements of Operations 1 Segment Results 11 Contribution to Income 2 Book Value per Common Share and Debt to Capital 3 Allstate Health and Benefits Return on Allstate Common Shareholders' Equity 4 Segment Results and Other Statistics 12 Policies in Force 5 Corporate and Other Property-Liability Segment Results 13 Results 6 Allstate Protection Investments Profitability Measures 7 Investment Position and Results 14 Impact of Net Rate Changes Implemented on Premiums Written 8 Investment Position and Results by Strategy 15 Auto Profitability Measures and Statistics 9 Homeowners Profitability Measures and Statistics 10 Definitions of Non-GAAP Measures 16,17 Glossary 18 Items included in the glossary are denoted with a caret (^) the first time used.

The Allstate Corporation Condensed Consolidated Statements of Operations (In millions, except per share data) Three months ended Nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Revenues Property and casualty insurance premiums ^ $ 14,333 $ 13,952 $ 13,512 $ 13,188 $ 12,839 $ 12,470 $ 12,173 $ 41,797 $ 37,482 Accident and health insurance premiums and contract charges ^ 487 474 478 467 463 453 463 1,439 1,379 Other revenue ^ 781 679 669 650 592 597 561 2,129 1,750 Net investment income 783 712 764 604 689 610 575 2,259 1,874 Net gains (losses) on investments and derivatives 243 (103) (164) (77) (86) (151) 14 (24) (223) Total revenues 16,627 15,714 15,259 14,832 14,497 13,979 13,786 47,600 42,262 Costs and expenses Property and casualty insurance claims and claims expense 10,409 10,801 9,501 8,780 10,237 11,727 10,326 30,711 32,290 Accident, health and other policy benefits 317 291 296 286 262 258 265 904 785 Amortization of deferred policy acquisition costs 2,037 2,001 1,939 1,904 1,841 1,789 1,744 5,977 5,374 Operating costs and expenses 2,217 2,019 1,885 1,864 1,771 1,786 1,716 6,121 5,273 Pension and other postretirement remeasurement (gains) losses 26 (9) (2) (47) 149 (40) (53) 15 56 Restructuring and related charges 28 13 10 28 87 27 27 51 141 Amortization of purchased intangibles 71 70 69 83 83 82 81 210 246 Interest expense 104 98 97 107 88 98 86 299 272 Total costs and expenses 15,209 15,284 13,795 13,005 14,518 15,727 14,192 44,288 44,437 Income (loss) from operations before income tax expense 1,418 430 1,464 1,827 (21) (1,748) (406) 3,312 (2,175) Income tax expense (benefit) 254 83 266 340 (17) (373) (85) 603 (475) Net income (loss) 1,164 347 1,198 1,487 (4) (1,375) (321) 2,709 (1,700) Less: Net income (loss) attributable to noncontrolling interest (26) 16 (20) (2) 1 (23) (1) (30) (23) Net income (loss) attributable to Allstate 1,190 331 1,218 1,489 (5) (1,352) (320) 2,739 (1,677) Less: Preferred stock dividends 29 30 29 29 36 37 26 88 99 Net income (loss) applicable to common shareholders $ 1,161 $ 301 $ 1,189 $ 1,460 $ (41) $ (1,389) $ (346) $ 2,651 $ (1,776) Earnings per common share Net income (loss) applicable to common shareholders per common share - Basic $ 4.39 $ 1.14 $ 4.51 $ 5.57 $ (0.16) $ (5.29) $ (1.31) $ 10.04 $ (6.76) Weighted average common shares - Basic 264.6 264.1 263.5 262.2 261.8 262.6 263.5 264.1 262.6 Net income (loss) applicable to common shareholders per common share - Diluted (1) $ 4.33 $ 1.13 $ 4.46 $ 5.52 $ (0.16) $ (5.29) $ (1.31) $ 9.91 $ (6.76) Weighted average common shares - Diluted (1) 268.0 267.1 266.5 264.7 261.8 262.6 263.5 267.4 262.6 Weighted average dilutive potential common shares excluded due to net loss applicable to common shareholders (1) — — — — 1.5 1.7 2.6 — 1.9 Cash dividends declared per common share $ 0.92 $ 0.92 $ 0.92 $ 0.89 $ 0.89 $ 0.89 $ 0.89 $ 2.76 $ 2.67 (1) In periods where a net loss is reported, weighted average shares for basic earnings per share is used for calculating diluted earnings per share because all dilutive potential common shares are anti-dilutive and are therefore excluded from the calculation. The Allstate Corporation 3Q24 Supplement 1

The Allstate Corporation Contribution to Income (In millions, except per share data) Three months ended Nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Contribution to income Net income (loss) applicable to common shareholders $ 1,161 $ 301 $ 1,189 $ 1,460 $ (41) $ (1,389) $ (346) $ 2,651 $ (1,776) Net (gains) losses on investments and derivatives (243) 103 164 77 86 151 (14) 24 223 Pension and other postretirement remeasurement (gains) losses 26 (9) (2) (47) 149 (40) (53) 15 56 Amortization of purchased intangibles 71 70 69 83 83 82 81 210 246 (Gain) loss on disposition (1) (1) (4) (8) 5 8 (9) (6) 4 Non-recurring costs — — — — — 90 (2) — — 90 (2) Income tax expense (benefit) 34 (35) (49) (24) (68) (64) (1) (50) (133) Adjusted net income (loss) * $ 1,048 $ 429 $ 1,367 $ 1,541 $ 214 $ (1,162) $ (342) $ 2,844 $ (1,290) Income per common share - Diluted Net income (loss) applicable to common shareholders (1) $ 4.33 $ 1.13 $ 4.46 $ 5.52 $ (0.16) $ (5.29) (1.31) $ 9.91 $ (6.76) Net (gains) losses on investments and derivatives (0.91) 0.38 0.62 0.29 0.33 0.58 (0.05) 0.09 0.85 Pension and other postretirement remeasurement (gains) losses 0.10 (0.03) (0.01) (0.18) 0.57 (0.15) (0.20) 0.06 0.21 Amortization of purchased intangibles 0.26 0.26 0.26 0.31 0.31 0.31 0.31 0.79 0.94 (Gain) loss on disposition — — (0.02) (0.03) 0.02 0.03 (0.04) (0.02) 0.02 Non-recurring costs — — — — — 0.34 (2) — — 0.34 (2) Income tax expense (benefit) 0.13 (0.13) (0.18) (0.09) (0.26) (0.24) (0.01) (0.19) (0.51) Adjusted net income (loss) * (1) $ 3.91 $ 1.61 $ 5.13 $ 5.82 $ 0.81 $ (4.42) $ (1.30) $ 10.64 $ (4.91) Weighted average common shares - Diluted (1) 268.0 267.1 266.5 264.7 263.3 262.6 263.5 267.4 262.6 Weighted average dilutive potential common shares excluded due to net loss applicable to common shareholders (1) — — — — 1.5 1.7 2.6 — 1.9 (1) In periods where a net loss or adjusted net loss is reported, weighted average shares for basic earnings per share is used for calculating diluted earnings per share because all dilutive potential common shares are anti-dilutive and are therefore excluded from the calculation. (2) Relates to settlement costs for non-recurring litigation that is outside of the ordinary course of business. The Allstate Corporation 3Q24 Supplement 2

The Allstate Corporation Book Value per Common Share and Debt to Capital ($ in millions, except per share data) Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Book value per common share Numerator: Allstate common shareholders' equity (1) $ 18,876 $ 16,592 $ 16,638 $ 15,769 $ 12,592 $ 13,516 $ 15,524 Denominator: Common shares outstanding and dilutive potential common shares outstanding (2) 268.3 267.0 267.2 265.5 263.5 263.5 264.7 Book value per common share $ 70.35 $ 62.14 $ 62.27 $ 59.39 $ 47.79 $ 51.29 $ 58.65 Book value per common share, excluding the impact of unrealized net capital gains and losses on fixed income securities Numerator: Allstate common shareholders' equity (1) $ 18,876 $ 16,592 $ 16,638 $ 15,769 $ 12,592 $ 13,516 $ 15,524 Less: Unrealized net capital gains and losses on fixed income securities 364 (939) (813) (597) (2,509) (1,843) (1,575) Adjusted Allstate common shareholders' equity $ 18,512 $ 17,531 $ 17,451 $ 16,366 $ 15,101 $ 15,359 $ 17,099 Denominator: Common shares outstanding and dilutive potential common shares outstanding (2) 268.3 267.0 267.2 265.5 263.5 263.5 264.7 Book value per common share, excluding the impact of unrealized net capital gains and losses on fixed income securities * $ 69.00 $ 65.66 $ 65.31 $ 61.64 $ 57.31 $ 58.29 $ 64.60 Total debt $ 8,083 $ 8,082 $ 7,938 $ 7,942 $ 7,946 $ 7,949 $ 8,452 Total capital resources $ 28,960 $ 26,675 $ 26,577 $ 25,712 $ 22,539 $ 23,466 $ 25,946 Ratio of debt to Allstate shareholders' equity 38.7 % 43.5 % 42.6 % 44.7 % 54.5 % 51.2 % 48.3 % Ratio of debt to capital resources 27.9 % 30.3 % 29.9 % 30.9 % 35.3 % 33.9 % 32.6 % (1) Excludes equity related to preferred stock of $2,001 million as of September 30, 2024, June 30, 2024, March 31, 2024, December 31, 2023, September 30, 2023 and June 30, 2023 and $1,970 million as of March 31, 2023. (2) Common shares outstanding were 264,796,275 and 262,496,775 as of September 30, 2024 and December 31, 2023, respectively. The Allstate Corporation 3Q24 Supplement 3

The Allstate Corporation Return on Allstate Common Shareholders' Equity ($ in millions) As of or for the twelve months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Return on Allstate common shareholders' equity Numerator: Net income (loss) applicable to common shareholders $ 4,111 $ 2,909 $ 1,219 $ (316) $ (2,079) $ (2,723) $ (2,374) Denominator: Beginning Allstate common shareholders' equity $ 12,592 $ 13,516 $ 15,524 $ 15,518 $ 15,713 $ 18,094 $ 21,105 Ending Allstate common shareholders' equity (1) 18,876 16,592 16,638 15,769 12,592 13,516 15,524 Average Allstate common shareholders' equity ^ $ 15,734 $ 15,054 $ 16,081 $ 15,644 $ 14,153 $ 15,805 $ 18,315 Return on Allstate common shareholders' equity 26.1 % 19.3 % 7.6 % (2.0) % (14.7) % (17.2) % (13.0) % Adjusted net income (loss) return on Allstate common shareholders' equity Numerator: Adjusted net income (loss) * $ 4,385 $ 3,551 $ 1,960 $ 251 $ (1,641) $ (2,266) $ (1,311) Denominator: Beginning Allstate common shareholders' equity $ 12,592 $ 13,516 $ 15,524 $ 15,518 $ 15,713 $ 18,094 $ 21,105 Less: Unrealized net capital gains and losses (2,512) (1,845) (1,573) (2,255) (2,929) (2,140) (996) Adjusted beginning Allstate common shareholders' equity 15,104 15,361 17,097 17,773 18,642 20,234 22,101 Ending Allstate common shareholders' equity (1) 18,876 16,592 16,638 15,769 12,592 13,516 15,524 Less: Unrealized net capital gains and losses 361 (938) (819) (604) (2,512) (1,845) (1,573) Adjusted ending Allstate common shareholders' equity 18,515 17,530 17,457 16,373 15,104 15,361 17,097 Average adjusted Allstate common shareholders' equity ^ $ 16,810 $ 16,446 $ 17,277 $ 17,073 $ 16,873 $ 17,798 $ 19,599 Adjusted net income (loss) return on Allstate common shareholders' equity * 26.1 % 21.6 % 11.3 % 1.5 % (9.7) % (12.7) % (6.7) % (1) Excludes equity related to preferred stock of $2,001 million as of September 30, 2024, June 30, 2024, March 31, 2024, December 31, 2023, September 30, 2023 and June 30, 2023 and $1,970 million as of March 31, 2023. The Allstate Corporation 3Q24 Supplement 4

The Allstate Corporation Policies in Force Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Policies in force statistics (in thousands) (1) Allstate Protection Auto 24,998 25,124 25,207 25,283 25,376 25,520 25,733 Homeowners 7,483 7,426 7,364 7,338 7,297 7,268 7,262 Other personal lines 4,877 4,871 4,849 4,863 4,884 4,890 4,913 Commercial lines 238 256 273 284 296 307 307 Total 37,596 37,677 37,693 37,768 37,853 37,985 38,215 Protection Services Allstate Protection Plans 156,818 151,172 148,086 145,292 140,648 138,172 136,591 Allstate Dealer Services 3,703 3,733 3,758 3,776 3,813 3,825 3,839 Allstate Roadside 670 604 565 553 554 545 536 Allstate Identity Protection 2,538 2,510 3,031 2,884 2,965 3,222 3,206 Total 163,729 158,019 155,440 152,505 147,980 145,764 144,172 Allstate Health and Benefits Employer voluntary benefits ^ 3,556 3,577 3,594 3,590 3,710 3,736 3,799 Group health ^ 140 148 146 136 134 131 127 Individual health ^ 462 456 453 417 412 406 413 Total 4,158 4,181 4,193 4,143 4,256 4,273 4,339 Total policies in force 205,483 199,877 197,326 194,416 190,089 188,022 186,726 (1) Policy counts are based on items rather than customers. • A multi-car customer would generate multiple item (policy) counts, even if all cars were insured under one policy. • PIF does not reflect banking relationships for our lender-placed insurance products to customers including fire, home and flood products, as well as collateral protection insurance and guaranteed asset protection products for automobiles. • Commercial lines PIF for shared economy agreements reflect contracts that cover multiple drivers as opposed to individual drivers. • Allstate Roadside reflects memberships in force and do not include their wholesale partners as the customer relationship is managed by the wholesale partner. • Allstate Dealer Services reflects service contracts and other products sold in conjunction with auto lending and vehicle sales transactions and do not include their third party administrators ("TPAs") as the customer relationship is managed by the TPAs. • Allstate Protection Plans represents active consumer product protection plans. • Allstate Identity Protection reflects individual customer counts for identity protection products. • Allstate Health and Benefits reflects certificate counts as opposed to group counts. The Allstate Corporation 3Q24 Supplement 5

The Allstate Corporation Property-Liability Results ($ in millions, except ratios) Three months ended Nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Premiums written $ 14,707 $ 14,279 $ 13,183 $ 12,640 $ 13,304 $ 12,620 $ 11,783 $ 42,169 $ 37,707 (Increase) decrease in unearned premiums (1,075) (921) (237) (42) (1,082) (753) (127) (2,233) (1,962) Other 62 (19) (46) 3 48 54 (21) (3) 81 Premiums earned 13,694 13,339 12,900 12,601 12,270 11,921 11,635 39,933 35,826 Other revenue 531 441 430 410 393 389 353 1,402 1,135 Claims and claims expense (10,249) (10,649) (9,349) (8,621) (10,077) (11,575) (10,180) (30,247) (31,832) Amortization of deferred policy acquisition costs (1,696) (1,673) (1,608) (1,589) (1,533) (1,496) (1,452) (4,977) (4,481) Operating costs and expenses (1,710) (1,537) (1,417) (1,394) (1,333) (1,249) (1,279) (4,664) (3,861) Restructuring and related charges (23) (15) (7) (22) (74) (26) (21) (45) (121) Amortization of purchased intangibles (52) (51) (51) (60) (60) (58) (57) (154) (175) Underwriting income (loss) (1) $ 495 $ (145) $ 898 $ 1,325 $ (414) $ (2,094) $ (1,001) $ 1,248 $ (3,509) Catastrophe losses $ (1,703) $ (2,120) $ (731) $ (68) $ (1,181) $ (2,696) $ (1,691) $ (4,554) $ (5,568) Claims expense excluding catastrophe expense ^ (736) (713) (696) (735) (707) (687) (670) (2,145) (2,064) Operating ratios and reconciliations to underlying ratios Loss ratio 74.9 79.8 72.4 68.4 82.2 97.1 87.5 75.8 88.9 Effect of catastrophe losses (12.4) (15.9) (5.7) (0.5) (9.6) (22.6) (14.5) (11.4) (15.5) Effect of non-catastrophe prior year reserve reestimates (0.4) 0.5 (0.1) (1.6) (1.4) (1.6) (0.3) — (1.1) Underlying loss ratio * 62.1 64.4 66.6 66.3 71.2 72.9 72.7 64.4 72.3 Expense ratio ^ 21.5 21.3 20.6 21.1 21.2 20.5 21.1 21.1 20.9 Effect of amortization of purchased intangibles (0.4) (0.4) (0.3) (0.5) (0.5) (0.5) (0.5) (0.4) (0.5) Underlying expense ratio * 21.1 20.9 20.3 20.6 20.7 20.0 20.6 20.7 20.4 Effect of advertising expense (3.8) (3.0) (2.2) (1.5) (1.4) (0.9) (1.3) (3.0) (1.2) Effect of restructuring and related charges (0.1) (0.1) (0.1) (0.2) (0.6) (0.2) (0.2) (0.1) (0.3) Adjusted underwriting expense ratio * 17.2 17.8 18.0 18.9 18.7 18.9 19.1 17.6 18.9 Claims expense ratio excluding catastrophe expense ^ 5.4 5.3 5.4 5.8 5.8 5.8 5.8 5.4 5.8 Adjusted expense ratio * 22.6 23.1 23.4 24.7 24.5 24.7 24.9 23.0 24.7 Combined ratio 96.4 101.1 93.0 89.5 103.4 117.6 108.6 96.9 109.8 Effect of catastrophe losses (12.4) (15.9) (5.7) (0.5) (9.6) (22.6) (14.5) (11.4) (15.5) Effect of non-catastrophe prior year reserve reestimates (0.4) 0.5 (0.1) (1.6) (1.4) (1.6) (0.3) — (1.1) Effect of amortization of purchased intangibles (0.4) (0.4) (0.3) (0.5) (0.5) (0.5) (0.5) (0.4) (0.5) Underlying combined ratio * 83.2 85.3 86.9 86.9 91.9 92.9 93.3 85.1 92.7 Effect of Run-off Property-Liability on combined ratio 0.5 — — 0.1 0.7 0.1 — 0.2 0.3 (1) Underwriting income (loss) Allstate Protection $ 555 $ (142) $ 903 $ 1,331 $ (331) $ (2,092) $ (998) $ 1,316 $ (3,421) Run-off Property-Liability (60) (3) (5) (6) (83) (2) (3) (68) (88) Property-Liability $ 495 $ (145) $ 898 $ 1,325 $ (414) $ (2,094) $ (1,001) $ 1,248 $ (3,509) Other financial information Net investment income $ 708 $ 643 $ 702 $ 538 $ 627 $ 544 $ 509 $ 2,053 $ 1,680 Income tax (expense) benefit on operations (217) (113) (308) (343) (43) 320 91 (638) 368 Net income (loss) attributable to noncontrolling interest, after-tax (25) 16 (20) (2) 2 (23) (1) (29) (22) Amortization of purchased intangibles (52) (51) (51) (60) (60) (58) (57) (154) (175) The Allstate Corporation 3Q24 Supplement 6

The Allstate Corporation Allstate Protection Profitability Measures ($ in millions, except ratios) Three months ended Nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Premiums written Auto $ 9,539 $ 9,284 $ 9,357 $ 8,570 $ 8,770 $ 8,269 $ 8,349 $ 28,180 $ 25,388 Homeowners 4,073 3,845 2,874 3,144 3,525 3,381 2,534 10,792 9,440 Other personal lines 817 845 660 620 676 675 548 2,322 1,899 Commercial lines 104 150 157 153 140 200 227 411 567 Other business lines ^ 174 155 135 153 193 95 125 464 413 Total $ 14,707 $ 14,279 $ 13,183 $ 12,640 $ 13,304 $ 12,620 $ 11,783 $ 42,169 $ 37,707 Net premiums earned Auto $ 9,270 $ 9,079 $ 8,778 $ 8,566 $ 8,345 $ 8,121 $ 7,908 $ 27,127 $ 24,374 Homeowners 3,403 3,255 3,154 3,077 2,969 2,883 2,810 9,812 8,662 Other personal lines 718 701 659 630 608 587 562 2,078 1,757 Commercial lines 151 158 169 183 194 202 232 478 628 Other business lines 152 146 140 145 154 128 123 438 405 Total $ 13,694 $ 13,339 $ 12,900 $ 12,601 $ 12,270 $ 11,921 $ 11,635 $ 39,933 $ 35,826 Underwriting income (loss) Auto $ 486 $ 370 $ 351 $ 93 $ (178) $ (678) $ (346) $ 1,207 $ (1,202) Homeowners 60 (375) 564 1,169 (131) (1,307) (534) 249 (1,972) Other personal lines (18) (55) 7 114 6 (70) (89) (66) (153) Commercial lines (16) (138) (70) (84) (60) (61) (60) (224) (181) Other business lines 40 52 48 37 28 21 29 140 78 Answer Financial 3 4 3 2 4 3 2 10 9 Total $ 555 $ (142) $ 903 $ 1,331 $ (331) $ (2,092) $ (998) $ 1,316 $ (3,421) Claims expense excluding catastrophe expense $ 732 $ 711 $ 695 $ 733 $ 703 $ 685 $ 668 $ 2,138 $ 2,056 Operating ratios and reconciliations to underlying ratios Loss ratio 74.4 79.8 72.4 68.3 81.5 97.0 87.5 75.6 88.6 Effect of catastrophe losses (12.4) (15.9) (5.7) (0.5) (9.6) (22.6) (14.5) (11.4) (15.5) Effect of non-catastrophe prior year reserve reestimates 0.1 0.5 (0.1) (1.5) (0.7) (1.5) (0.3) 0.2 (0.8) Underlying loss ratio * 62.1 64.4 66.6 66.3 71.2 72.9 72.7 64.4 72.3 Expense ratio 21.5 21.3 20.6 21.1 21.2 20.5 21.1 21.1 20.9 Effect of amortization of purchased intangibles (0.4) (0.4) (0.3) (0.5) (0.5) (0.5) (0.5) (0.4) (0.5) Underlying expense ratio * 21.1 20.9 20.3 20.6 20.7 20.0 20.6 20.7 20.4 Effect of advertising expense (3.8) (3.0) (2.2) (1.5) (1.4) (0.9) (1.3) (3.0) (1.2) Effect of restructuring and related charges (0.1) (0.1) (0.1) (0.2) (0.6) (0.2) (0.2) (0.1) (0.3) Adjusted underwriting expense ratio * 17.2 17.8 18.0 18.9 18.7 18.9 19.1 17.6 18.9 Combined ratio 95.9 101.1 93.0 89.4 102.7 117.5 108.6 96.7 109.5 Underlying combined ratio * 83.2 85.3 86.9 86.9 91.9 92.9 93.3 85.1 92.7 Claims expense ratio excluding catastrophe expense 5.3 5.3 5.4 5.8 5.7 5.7 5.7 5.4 5.7 The Allstate Corporation 3Q24 Supplement 7

The Allstate Corporation Allstate Protection Impact of Net Rate Changes Implemented on Premiums Written Three months ended September 30, 2024 Three months ended June 30, 2024 Number of locations (1) Total brand (%) (2) (3) Location specific (%) (4) Number of locations Total brand (%) (3) Location specific (%) Allstate brand Auto 28 2.9 7.8 21 1.0 5.7 Homeowners (5) 13 3.1 17.2 12 1.1 9.9 National General Auto 20 1.7 6.3 27 2.0 11.2 Homeowners (5) 12 2.2 14.6 12 2.3 14.6 Three months ended March 31, 2024 Three months ended December 31, 2023 Number of locations Total brand (%) (3) Location specific (%) Number of locations Total brand (%) (3) Location specific (%) Allstate brand Auto 27 2.4 8.4 33 6.9 13.5 Homeowners (5) 15 3.4 11.7 20 1.8 9.0 National General Auto 27 4.1 9.6 39 4.0 10.2 Homeowners (5) 12 1.6 14.0 17 4.5 18.5 (1) Refers to the number of U.S. states, the District of Columbia or Canadian provinces where rate changes have been implemented. Allstate brand operates in 50 states, the District of Columbia, and 5 Canadian provinces. National General operates in 50 states and the District of Columbia. (2) Represents the impact in the locations where rate changes were implemented during the period as a percentage of total brand prior year-end premiums written. (3) Total Allstate brand implemented auto insurance rate increases totaled $810 million in the third quarter of 2024, $264 million in the second quarter of 2024, $685 million in the first quarter of 2024 and $1.81 billion in the fourth quarter of 2023. (4) Represents the impact in the locations where rate changes were implemented during the period as a percentage of its respective total prior year-end premiums written in those same locations. (5) Excludes the impact to average premium from inflation in insured home replacement costs and other aging factor adjustments, which could be significant. The Allstate Corporation 3Q24 Supplement 8

The Allstate Corporation Auto Profitability Measures and Statistics ($ in millions, except ratios) Three months ended Nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Allstate Protection Premiums written $ 9,539 $ 9,284 $ 9,357 $ 8,570 $ 8,770 $ 8,269 $ 8,349 $ 28,180 $ 25,388 Net premiums earned 9,270 9,079 8,778 8,566 8,345 8,121 7,908 27,127 24,374 Underwriting income (loss) 486 370 351 93 (178) (678) (346) 1,207 (1,202) Operating ratios and reconciliations to underlying ratios Loss ratio 71.9 74.2 75.4 78.5 81.4 87.9 83.4 73.8 84.2 Effect of catastrophe losses (3.0) (3.9) (1.2) (0.3) (2.6) (4.2) (1.2) (2.7) (2.7) Effect of non-catastrophe prior year reserve reestimates ("PYRR") 0.6 1.9 0.7 (1.7) (0.3) (1.4) (0.1) 1.0 (0.5) Underlying loss ratio * 69.5 72.2 74.9 76.5 78.5 82.3 82.1 72.1 81.0 Expense ratio 22.9 21.7 20.6 20.4 20.7 20.4 21.0 21.8 20.7 Effect of amortization of purchased intangibles (0.4) (0.4) (0.4) (0.5) (0.4) (0.5) (0.5) (0.4) (0.5) Underlying expense ratio * 22.5 21.3 20.2 19.9 20.3 19.9 20.5 21.4 20.2 Combined ratio 94.8 95.9 96.0 98.9 102.1 108.3 104.4 95.6 104.9 Effect of catastrophe losses (3.0) (3.9) (1.2) (0.3) (2.6) (4.2) (1.2) (2.7) (2.7) Effect of non-catastrophe PYRR 0.6 1.9 0.7 (1.7) (0.3) (1.4) (0.1) 1.0 (0.5) Effect of amortization of purchased intangibles ("APIA") (0.4) (0.4) (0.4) (0.5) (0.4) (0.5) (0.5) (0.4) (0.5) Underlying combined ratio * 92.0 93.5 95.1 96.4 98.8 102.2 102.6 93.5 101.2 Annualized average earned premium ^ ($) 1,483 1,445 1,393 1,355 1,315 1,273 1,229 1,447 1,281 New issued applications by channel (in thousands) ^ Exclusive agency 675 628 605 549 582 574 589 1,908 1,745 Direct 620 538 510 356 398 415 463 1,668 1,276 Independent agency 597 562 555 493 525 489 482 1,714 1,496 Total 1,892 1,728 1,670 1,398 1,505 1,478 1,534 5,290 4,517 Allstate brand Average premium - gross written ^ ($) 852 841 823 794 772 737 726 839 745 Annualized average earned premium ^ ($) 1,522 1,482 1,432 1,386 1,345 1,301 1,260 1,492 1,320 Annualized average earned premium (% change year-over-year) 13.2 13.9 13.7 14.6 14.6 14.3 13.9 13.0 15.4 Average underlying loss (incurred pure premium) * ($) 1,033 1,073 1,078 1,048 1,057 1,082 1,055 1,070 1,080 Average underlying loss (incurred pure premium) * (% change year-over- year) (2.3) (0.8) 2.2 (2.8) 7.7 17.5 26.5 (0.9) 18.0 Average underlying loss (incurred pure premium) and expense* ($) 1,391 1,406 1,375 1,332 1,335 1,345 1,313 1,402 1,349 Renewal ratio ^ (%) 84.7 85.7 86.0 85.4 84.9 85.5 85.7 85.5 85.4 The Allstate Corporation 3Q24 Supplement 9

The Allstate Corporation Homeowners Profitability Measures and Statistics ($ in millions, except ratios) Three months ended Nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Allstate Protection Premiums written $ 4,073 $ 3,845 $ 2,874 $ 3,144 $ 3,525 $ 3,381 $ 2,534 $ 10,792 $ 9,440 Net premiums earned 3,403 3,255 3,154 3,077 2,969 2,883 2,810 9,812 8,662 Underwriting income (loss) 60 (375) 564 1,169 (131) (1,307) (534) 249 (1,972) Operating ratios and reconciliations to underlying ratios Loss ratio 76.3 90.3 60.3 39.4 82.4 125.0 98.5 75.9 101.8 Effect of catastrophe losses (36.2) (49.6) (17.6) (0.7) (29.6) (75.9) (51.6) (34.7) (52.1) Effect of non-catastrophe prior year reserve reestimates ("PYRR") 0.4 1.9 1.3 0.3 (1.5) (1.4) 0.5 1.1 (0.9) Underlying loss ratio * 40.5 42.6 44.0 39.0 51.3 47.7 47.4 42.3 48.8 Expense ratio 21.9 21.2 21.8 22.6 22.0 20.3 20.5 21.6 21.0 Effect of amortization of purchased intangibles (0.3) (0.3) (0.3) (0.3) (0.4) (0.4) (0.3) (0.3) (0.4) Underlying expense ratio * 21.6 20.9 21.5 22.3 21.6 19.9 20.2 21.3 20.6 Combined ratio 98.2 111.5 82.1 62.0 104.4 145.3 119.0 97.5 122.8 Effect of catastrophe losses (36.2) (49.6) (17.6) (0.7) (29.6) (75.9) (51.6) (34.7) (52.1) Effect of non-catastrophe PYRR 0.4 1.9 1.3 0.3 (1.5) (1.4) 0.5 1.1 (0.9) Effect of amortization of purchased intangibles ("APIA") (0.3) (0.3) (0.3) (0.3) (0.4) (0.4) (0.3) (0.3) (0.4) Underlying combined ratio * 62.1 63.5 65.5 61.3 72.9 67.6 67.6 63.6 69.4 New issued applications by channel (in thousands) Exclusive agency 260 241 218 191 211 202 196 719 609 Direct 39 32 25 19 22 19 19 96 60 Independent agency 63 61 48 54 69 59 50 172 178 Total 362 334 291 264 302 280 265 987 847 Allstate brand Average premium - gross written ($) 2,050 1,993 1,912 1,872 1,851 1,800 1,706 1,991 1,792 Renewal ratio (%) 87.2 87.2 87.1 87.2 86.8 86.3 86.3 87.2 86.5 The Allstate Corporation 3Q24 Supplement 10

The Allstate Corporation Protection Services Segment Results ($ in millions) Three months ended Nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Protection Services Net premiums written $ 678 $ 676 $ 627 $ 728 $ 658 $ 658 $ 619 $ 1,981 $ 1,935 Premiums earned $ 639 $ 613 $ 612 $ 587 $ 569 $ 549 $ 538 $ 1,864 $ 1,656 Other revenue 110 98 85 76 75 84 84 293 243 Intersegment insurance premiums and service fees 49 39 35 36 34 35 33 123 102 Net investment income 24 23 21 20 19 18 16 68 53 Claims and claims expense (166) (157) (158) (160) (166) (153) (153) (481) (472) Amortization of deferred policy acquisition costs (304) (296) (289) (279) (269) (259) (251) (889) (779) Operating costs and expenses (280) (246) (234) (225) (225) (218) (221) (760) (664) Restructuring and related charges — — (1) (2) (3) — (1) (1) (4) Income tax (expense) benefit on operations (15) (19) (17) (49) (8) (15) (11) (51) (34) Less: net income (loss) attributable to noncontrolling interest (1) — — — (1) — — (1) (1) Adjusted net income ^ (1) 58 55 54 4 27 41 34 167 102 Depreciation 5 6 6 6 6 6 6 17 18 Restructuring and related charges — — 1 2 3 — 1 1 4 Income tax expense (benefit) on operations 15 19 17 49 8 15 11 51 34 Adjusted earnings before taxes, depreciation and restructuring * $ 78 $ 80 $ 78 $ 61 $ 44 $ 62 $ 52 $ 236 $ 158 Allstate Protection Plans Net premiums written $ 519 $ 518 $ 470 $ 578 $ 487 $ 481 $ 439 $ 1,507 $ 1,407 Premiums earned $ 480 $ 453 $ 439 $ 414 $ 392 $ 373 $ 361 $ 1,372 $ 1,126 Revenue ^ 512 483 464 439 416 399 385 1,459 1,200 Claims and claims expense (129) (120) (114) (113) (116) (106) (105) (363) (327) Amortization of deferred policy acquisition costs (196) (188) (180) (170) (159) (148) (141) (564) (448) Other costs and expenses ^ (139) (122) (117) (113) (114) (103) (103) (378) (320) Restructuring and related charges — 1 (1) — (1) — — — (1) Income tax (expense) benefit on operations (10) (13) (12) (5) (7) (11) (8) (35) (26) Less: net income (loss) attributable to noncontrolling interest (1) — — — (1) — — (1) (1) Adjusted net income $ 39 $ 41 $ 40 $ 38 $ 20 $ 31 $ 28 $ 120 $ 79 Allstate Dealer Services Revenue $ 146 $ 148 $ 146 $ 146 $ 146 $ 148 $ 148 $ 440 $ 442 Adjusted net income (loss) 5 6 6 (33) 5 6 7 17 18 Allstate Roadside Revenue $ 53 $ 51 $ 66 $ 66 $ 69 $ 66 $ 64 $ 170 $ 199 Adjusted net income 10 8 11 7 7 6 4 29 17 Arity Revenue $ 74 $ 52 $ 39 $ 32 $ 29 $ 35 $ 37 $ 165 $ 101 Adjusted net income (loss) 1 (2) (4) (5) (6) (3) (4) (5) (13) Allstate Identity Protection Revenue $ 37 $ 39 $ 38 $ 36 $ 37 $ 38 $ 37 $ 114 $ 112 Adjusted net income (loss) 3 2 1 (3) 1 1 (1) 6 1 (1) Adjusted net income is the GAAP segment measure. The Allstate Corporation 3Q24 Supplement 11

The Allstate Corporation Allstate Health and Benefits Segment Results and Other Statistics ($ in millions) Three months ended Nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Allstate Health and Benefits Accident and health insurance premiums and contract charges $ 487 $ 474 $ 478 $ 467 $ 463 $ 453 $ 463 $ 1,439 $ 1,379 Other revenue (1) 123 121 134 141 104 101 101 378 306 Net investment income 26 25 23 22 20 21 19 74 60 Accident, health and other policy benefits (317) (291) (296) (286) (262) (258) (265) (904) (785) Amortization of deferred policy acquisition costs (37) (32) (42) (36) (39) (34) (41) (111) (114) Operating costs and expenses (232) (224) (225) (232) (197) (210) (203) (681) (610) Restructuring and related charges (2) — (1) (1) (2) — (4) (3) (6) Income tax expense on operations (11) (15) (15) (15) (18) (16) (14) (41) (48) Adjusted net income $ 37 $ 58 $ 56 $ 60 $ 69 $ 57 $ 56 $ 151 $ 182 Interest credited to contractholder funds (8) (8) (9) (8) (8) (9) (8) (25) (25) Benefit ratio ^ 63.4 % 59.7 % 60.0 % 59.5 % 54.9 % 55.0 % 55.5 % 61.1 % 55.1 % Adjusted net income Employer voluntary benefits $ 19 $ 28 $ 17 $ 24 $ 28 $ 26 $ 22 $ 64 $ 76 Group health and individual health 18 30 39 36 41 31 34 87 106 Total $ 37 $ 58 $ 56 $ 60 $ 69 $ 57 $ 56 $ 151 $ 182 Premiums and contract charges Employer voluntary benefits $ 248 $ 246 $ 248 $ 248 $ 253 $ 245 $ 255 $ 742 $ 753 Group health 120 120 118 112 111 110 107 358 328 Individual health 119 108 112 107 99 98 101 339 298 Total $ 487 $ 474 $ 478 $ 467 $ 463 $ 453 $ 463 $ 1,439 $ 1,379 (1) Reflects commission revenue, administrative fees, agency fees and technology fees from the group health and individual health business. The Allstate Corporation 3Q24 Supplement 12

The Allstate Corporation Corporate and Other Segment Results ($ in millions) Three months ended Nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Other revenue $ 17 $ 19 $ 20 $ 20 $ 20 $ 23 $ 23 $ 56 $ 66 Net investment income 25 21 18 24 23 27 31 64 81 Operating costs and expenses (39) (47) (42) (53) (39) (45) (1) (48) (128) (132) (1) Restructuring and related charges (3) 2 (1) (3) (8) (1) (1) (2) (10) Interest expense (104) (98) (97) (107) (88) (98) (86) (299) (272) Income tax benefit on operations 23 29 25 43 18 20 18 77 56 Preferred stock dividends (29) (30) (29) (29) (36) (37) (26) (88) (99) Adjusted net loss $ (110) $ (104) $ (106) $ (105) $ (110) $ (111) $ (89) $ (320) $ (310) (1) Excludes settlement costs for non-recurring litigation that is outside of the ordinary course of business. The Allstate Corporation 3Q24 Supplement 13

The Allstate Corporation Investment Position and Results ($ in millions) As of or for the three months ended As of or for the nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Investment position Fixed income securities, at fair value $ 53,961 $ 52,576 $ 50,777 $ 48,865 $ 46,771 $ 45,550 $ 44,103 $ 53,961 $ 46,771 Equity securities ^ 2,091 2,216 2,383 2,411 2,419 2,290 2,174 2,091 2,419 Mortgage loans, net 765 815 815 822 830 823 781 765 830 Limited partnership interests ^ 8,925 8,730 8,562 8,380 8,363 8,150 7,971 8,925 8,363 Short-term, at fair value 6,994 5,288 4,318 5,144 3,368 5,137 6,722 6,994 3,368 Other investments, net 866 979 1,004 1,055 1,608 1,718 1,724 866 1,608 Total $ 73,602 $ 70,604 $ 67,859 $ 66,677 $ 63,359 $ 63,668 $ 63,475 $ 73,602 $ 63,359 Net investment income Fixed income securities $ 587 $ 571 $ 526 $ 492 $ 457 $ 422 $ 390 $ 1,684 $ 1,269 Equity securities 17 18 15 28 15 21 11 50 47 Mortgage loans 9 9 9 10 9 8 8 27 25 Limited partnership interests 138 103 199 53 190 122 134 440 446 Short-term investments 87 62 67 59 59 69 66 216 194 Other investments 25 25 21 48 41 39 41 71 121 Investment income, before expense 863 788 837 690 771 681 650 2,488 2,102 Investment expense (80) (76) (73) (86) (82) (71) (75) (229) (228) Net investment income $ 783 $ 712 $ 764 $ 604 $ 689 $ 610 $ 575 $ 2,259 $ 1,874 Pre-tax yields on fixed income securities ^ (1) 4.3 % 4.3 % 4.1 % 4.0 % 3.7 % 3.6 % 3.4 % 4.3 % 3.6 % Net gains (losses) on investments and derivatives, pre-tax by transaction type Sales $ 116 $ (90) $ (111) $ (120) $ (63) $ (130) $ (120) $ (85) $ (313) Credit losses (12) (16) (115) (30) (20) (37) (12) (143) (69) Valuation change of equity investments 119 18 70 129 (34) 23 198 207 187 Valuation change and settlements of derivatives 20 (15) (8) (56) 31 (7) (52) (3) (28) Total $ 243 $ (103) $ (164) $ (77) $ (86) $ (151) $ 14 $ (24) $ (223) Total return on investment portfolio ^ (1) Net investment income 1.1 % 1.0 % 1.1 % 0.9 % 1.1 % 1.0 % 0.9 % 3.2 % 3.0 % Valuation-interest bearing 2.5 (0.3) (0.7) (2) 3.5 (1.5) (0.8) 1.1 1.5 (2) (1.2) Valuation-equity investments 0.1 — 0.1 0.2 — — 0.4 0.3 0.3 Total 3.7 % 0.7 % 0.5 % 4.6 % (0.4) % 0.2 % 2.4 % 5.0 % 2.1 % Fixed income securities portfolio duration ^ (in years) (1) 5.1 4.9 4.8 4.7 4.5 4.4 4.0 Fixed income securities portfolio duration including interest rate derivative positions (in years) (1) 5.3 5.0 4.9 4.8 4.6 4.4 4.0 Fixed income and short-term investments duration including interest rate derivative positions (in years) (1) 4.7 4.6 4.6 4.3 4.3 3.9 3.5 (1) Beginning in the third quarter of 2024 calculations include investments held for sale. (2) Includes (0.2%) impact related to the $123 million credit loss for the carrying value of the surplus notes issued by Adirondack Insurance Exchange and New Jersey Skylands Insurance Association (together “Reciprocal Exchanges”) in the first quarter and first nine months of 2024. The Allstate Corporation 3Q24 Supplement 14

The Allstate Corporation Investment Position and Results by Strategy ($ in millions) As of or for the three months ended As of or for the nine months ended Sept. 30, 2024 June 30, 2024 March 31, 2024 Dec. 31, 2023 Sept. 30, 2023 June 30, 2023 March 31, 2023 Sept. 30, 2024 Sept. 30, 2023 Investment Position Market-based ^ Interest-bearing investments ^ $ 61,747 $ 58,781 $ 56,035 $ 55,025 $ 51,661 $ 52,191 $ 52,337 $ 61,747 $ 51,661 Equity securities 1,400 1,539 1,722 1,768 1,986 1,850 1,765 1,400 1,986 LP and other alternative investments ^ 148 162 158 141 198 201 214 148 198 Total $ 63,295 $ 60,482 $ 57,915 $ 56,934 $ 53,845 $ 54,242 $ 54,316 $ 63,295 $ 53,845 Performance-based ^ Private equity (1) $ 8,191 $ 8,064 $ 7,891 $ 7,752 $ 7,551 $ 7,381 $ 7,168 $ 8,191 $ 7,551 Real estate 2,116 2,058 2,053 1,991 1,963 2,045 1,991 2,116 1,963 Total $ 10,307 $ 10,122 $ 9,944 $ 9,743 $ 9,514 $ 9,426 $ 9,159 $ 10,307 $ 9,514 Investment income Market-based Interest-bearing investments $ 691 $ 649 $ 609 $ 578 $ 546 $ 519 $ 481 $ 1,949 $ 1,546 Equity securities 16 16 13 25 15 16 14 45 45 LP and other alternative investments (2) 1 2 4 1 6 1 12 7 19 Income for yield calculation $ 708 $ 667 $ 626 $ 604 $ 567 $ 536 $ 507 $ 2,001 $ 1,610 Pre-tax yield (3) 4.5 % 4.4 % 4.3 % 4.2 % 4.0 % 3.8 % 3.6 % 4.4 % 3.8 % Performance-based Private equity $ 130 $ 119 $ 196 $ 66 $ 131 $ 112 $ 105 $ 445 $ 348 Real estate 25 2 15 20 71 31 37 42 139 Investment income, before expense 155 121 211 86 202 143 142 487 487 Investee level expenses (12) (14) (10) (26) (16) (16) (16) (36) (48) Income for yield calculation $ 143 $ 107 $ 201 $ 60 $ 186 $ 127 $ 126 $ 451 $ 439 Pre-tax yield 5.6 % 4.3 % 8.2 % 2.5 % 7.9 % 5.5 % 5.5 % 6.0 % 6.3 % Total return on investment portfolio Market-based (3) 4.2 % 0.7 % 0.3 % (4) 5.4 % (0.8) % 0.1 % 2.6 % 5.4 % (4) 1.9 % Performance-based 1.5 1.0 2.3 0.4 2.8 1.0 1.6 4.8 5.4 Internal rate of return ^ Performance-based 10 year 11.2 % 11.5 % 11.7 % 12.0 % 12.5 % 12.6 % 12.7 % 5 year 11.5 11.6 12.1 12.0 12.2 12.1 12.1 3 year 9.4 11.7 14.3 17.3 19.3 19.6 16.0 1 year 4.3 4.9 5.6 4.6 5.7 4.2 5.9 (1) Includes infrastructure investments of $1.21 billion as of September 30, 2024. (2) Net of any investee level expenses. (3) Beginning in the third quarter of 2024 calculations include investments held for sale. (4) Includes (0.2%) impact related to the $123 million credit loss for the carrying value of the surplus notes issued by Adirondack Insurance Exchange and New Jersey Skylands Insurance Association (together “Reciprocal Exchanges”) in the first quarter and first nine months of 2024. The Allstate Corporation 3Q24 Supplement 15

Definitions of Non-GAAP Measures We believe that investors’ understanding of Allstate’s performance is enhanced by our disclosure of the following non-GAAP measures. Our methods for calculating these measures may differ from those used by other companies and therefore comparability may be limited. Adjusted net income is net income (loss) applicable to common shareholders, excluding: • Net gains and losses on investments and derivatives • Pension and other postretirement remeasurement gains and losses • Amortization or impairment of purchased intangibles • Gain or loss on disposition • Adjustments for other significant non-recurring, infrequent or unusual items, when (a) the nature of the charge or gain is such that it is reasonably unlikely to recur within two years, or (b) there has been no similar charge or gain within the prior two years • Related income tax expense or benefit of these items Net income (loss) applicable to common shareholders is the GAAP measure that is most directly comparable to adjusted net income. We use adjusted net income as an important measure to evaluate our results of operations. We believe that the measure provides investors with a valuable measure of the Company’s ongoing performance because it reveals trends in our insurance and financial services business that may be obscured by the net effect of net gains and losses on investments and derivatives, pension and other postretirement remeasurement gains and losses, amortization or impairment of purchased intangibles, gain or loss on disposition and adjustments for other significant non-recurring, infrequent or unusual items and the related tax expense or benefit of these items. Net gains and losses on investments and derivatives, and pension and other postretirement remeasurement gains and losses may vary significantly between periods and are generally driven by business decisions and external economic developments such as capital market conditions, the timing of which is unrelated to the insurance underwriting process. Gain or loss on disposition is excluded because it is non-recurring in nature and the amortization or impairment of purchased intangibles is excluded because it relates to the acquisition purchase price and is not indicative of our underlying business results or trends. Non-recurring items are excluded because, by their nature, they are not indicative of our business or economic trends. Accordingly, adjusted net income excludes the effect of items that tend to be highly variable from period to period and highlights the results from ongoing operations and the underlying profitability of our business. A byproduct of excluding these items to determine adjusted net income is the transparency and understanding of their significance to net income variability and profitability while recognizing these or similar items may recur in subsequent periods. Adjusted net income is used by management along with the other components of net income (loss) applicable to common shareholders to assess our performance. We use adjusted measures of adjusted net income in incentive compensation. Therefore, we believe it is useful for investors to evaluate net income (loss) applicable to common shareholders, adjusted net income and their components separately and in the aggregate when reviewing and evaluating our performance. We note that investors, financial analysts, financial and business media organizations and rating agencies utilize adjusted net income results in their evaluation of our and our industry’s financial performance and in their investment decisions, recommendations and communications as it represents a reliable, representative and consistent measurement of the industry and the Company and management’s performance. We note that the price to earnings multiple commonly used by insurance investors as a forward-looking valuation technique uses adjusted net income as the denominator. Adjusted net income should not be considered a substitute for net income (loss) applicable to common shareholders and does not reflect the overall profitability of our business. A reconciliation of adjusted net income to net income (loss) applicable to common shareholders is provided in the schedule, "Contribution to Income". Underlying loss ratio is a non-GAAP ratio, which is computed as the difference between three GAAP operating ratios: the loss ratio, the effect of catastrophes on the combined ratio, and the effect of prior year non-catastrophe reserve reestimates on the combined ratio. We believe that this ratio is useful to investors, and it is used by management to reveal the trends that may be obscured by catastrophe losses and prior year reserve reestimates. Catastrophe losses cause our loss trends to vary significantly between periods as a result of their incidence of occurrence and magnitude, and can have a significant impact on the combined ratio. Prior year reserve reestimates are caused by unexpected loss development on historical reserves. We believe it is useful for investors to evaluate these components separately and in the aggregate when reviewing our underwriting performance. The most directly comparable GAAP measure is the loss ratio. The underlying loss ratio should not be considered a substitute for the loss ratio and does not reflect the overall loss ratio of our business. A reconciliation of underlying loss ratio is provided in the schedules "Property-Liability Results", "Allstate Protection Profitability Measures", "Auto Profitability Measures" and "Homeowners Profitability Measures". Underlying expense ratio is a non-GAAP ratio, which is computed as the difference between the expense ratio and the effect of amortization or impairment of purchased intangibles on the expense ratio. We believe that the measure provides investors with a valuable measure of ongoing performance because it reveals trends that may be obscured by the amortization or impairment of purchased intangible assets. Amortization or Impairment of purchased intangible assets is excluded because it relates to the acquisition purchase price and is not indicative of our business results or trends. We believe it is useful for investors to evaluate these components separately and in the aggregate when reviewing our underwriting performance. The most directly comparable GAAP measure is the expense ratio. The underlying expense ratio should not be considered a substitute for the expense ratio and does not reflect the overall expense ratio of our business. A reconciliation of underlying expense ratio is provided in the schedules "Property-Liability Results", "Allstate Protection Profitability Measures", "Auto Profitability Measures" and "Homeowners Profitability Measures". Average underlying loss (incurred pure premium) and average underlying loss (incurred pure premium) and expense per policy are calculated as the underlying loss ratio and the underlying combined ratio (non-GAAP ratios), respectively, multiplied by the annualized GAAP earned premium ("annualized average earned premium”). We believe that this measure is useful to investors, and it is used by management for the same reasons noted above for the underlying loss and underlying combined ratios. The components of the calculation are available on the "Auto Profitability Measures and Statistics" page. The Allstate Corporation 3Q24 Supplement 16

Definitions of Non-GAAP Measures (continued) Adjusted underwriting expense ratio is a non-GAAP ratio, which is computed as the difference between the expense ratio and the effect of advertising expense, restructuring and related charges and amortization or impairment of purchased intangibles on the expense ratio. We believe that the measure provides investors with a valuable measure of ongoing performance because it reveals trends that may be obscured by the advertising expense, restructuring and related charges and amortization or impairment of purchased intangibles. Advertising expense is excluded as it may vary significantly from period to period based on business decisions and competitive position. Restructuring and related charges are excluded because these items are not indicative of our business results or trends. Amortization or impairment of purchased intangible assets is excluded because it relates to the acquisition purchase price. These are not indicative of our business results or trends. A reduction in expenses enables investment flexibility that can drive growth. We believe it is useful for investors to evaluate these components separately and in the aggregate when reviewing our underwriting performance. The most directly comparable GAAP measure is the expense ratio. The adjusted underwriting expense ratio should not be considered a substitute for the expense ratio and does not reflect the overall expense ratio of our business. Adjusted expense ratio is a non-GAAP ratio, which is computed as the combination of the adjusted underwriting expense ratio and claims expense ratio excluding catastrophe expense. We believe it is useful for investors to evaluate this ratio which is linked to a long-term expense ratio improvement commitment through 2024. The most directly comparable GAAP measure is the expense ratio. The adjusted expense ratio should not be considered a substitute for the expense ratio and does not reflect the overall expense ratio of our business. Underlying combined ratio is a non-GAAP ratio, which is the sum of the underlying loss and underlying expense ratios. We believe that this ratio is useful to investors, and it is used by management to reveal the trends in our Property-Liability business that may be obscured by catastrophe losses, prior year reserve reestimates and amortization or impairment of purchased intangibles. We believe it is useful for investors to evaluate these components separately and in the aggregate when reviewing our underwriting performance. The most directly comparable GAAP measure is the combined ratio. The underlying combined ratio should not be considered a substitute for the combined ratio and does not reflect the overall underwriting profitability of our business. A reconciliation of the underlying combined ratio to combined ratio is provided in the schedule "Property-Liability Results", "Auto Profitability Measures" and "Homeowners Profitability Measures". Protection Services adjusted earnings before taxes, depreciation and restructuring, is a non-GAAP measure, which is computed as adjusted net income (loss), excluding taxes, depreciation and restructuring. Adjusted net income (loss) is the GAAP measure that is most directly comparable to adjusted earnings before taxes, depreciation and restructuring. We use adjusted earnings before taxes, depreciation and restructuring, as an important measure to evaluate Protection Services' results of operations. We believe that the measure provides investors with a valuable measure of Protection Services' ongoing performance because it reveals trends that may be obscured by the taxes, depreciation and restructuring expenses. Taxes, depreciation and restructuring are excluded because these are not directly attributable to the underlying operating performance of Protection Services' segment. Adjusted earnings before taxes, depreciation and restructuring highlights the results from ongoing operations and the underlying profitability of our business and is used by management along with the other components of adjusted net income (loss) to assess our performance. We believe it is useful for investors to evaluate adjusted net income (loss), adjusted earnings before taxes, depreciation and restructuring, and their components separately and in the aggregate when reviewing and evaluating Protection Services segment’s performance. Adjusted earnings before taxes, depreciation and restructuring should not be considered a substitute for adjusted net income (loss) and does not reflect the overall profitability of our business. A reconciliation of adjusted net income (loss) to adjusted earnings before taxes, depreciation and restructuring, is provided in the schedule, "Protection Services Segment Results". Adjusted net income (loss) return on Allstate common shareholders’ equity is a ratio that uses a non-GAAP measure. It is calculated by dividing the rolling 12-month adjusted net income by the average of Allstate common shareholders’ equity at the beginning and at the end of the 12-months, after excluding the effect of unrealized net capital gains and losses. Return on Allstate common shareholders’ equity is the most directly comparable GAAP measure. We use adjusted net income as the numerator for the same reasons we use adjusted net income, as discussed previously. We use average Allstate common shareholders’ equity excluding the effect of unrealized net capital gains and losses for the denominator as a representation of common shareholders’ equity primarily applicable to Allstate's earned and realized business operations because it eliminates the effect of items that are unrealized and vary significantly between periods due to external economic developments such as capital market conditions like changes in equity prices and interest rates, the amount and timing of which are unrelated to the insurance underwriting process. We use it to supplement our evaluation of net income (loss) applicable to common shareholders and return on Allstate common shareholders’ equity because it excludes the effect of items that tend to be highly variable from period to period. We believe that this measure is useful to investors and that it provides a valuable tool for investors when considered along with return on Allstate common shareholders’ equity because it eliminates the after-tax effects of realized and unrealized net capital gains and losses that can fluctuate significantly from period to period and that are driven by economic developments, the magnitude and timing of which are generally not influenced by management. In addition, it eliminates non-recurring items that are not indicative of our ongoing business or economic trends. A byproduct of excluding the items noted above to determine adjusted net income return on Allstate common shareholders’ equity from return on Allstate common shareholders’ equity is the transparency and understanding of their significance to return on common shareholders’ equity variability and profitability while recognizing these or similar items may recur in subsequent periods. We use adjusted measures of adjusted net income return on Allstate common shareholders’ equity in incentive compensation. Therefore, we believe it is useful for investors to have adjusted net income return on Allstate common shareholders’ equity and return on Allstate common shareholders’ equity when evaluating our performance. We note that investors, financial analysts, financial and business media organizations and rating agencies utilize adjusted net income return on common shareholders’ equity results in their evaluation of our and our industry’s financial performance and in their investment decisions, recommendations and communications as it represents a reliable, representative and consistent measurement of the industry and the company and management’s utilization of capital. Adjusted net income return on Allstate common shareholders’ equity should not be considered a substitute for return on Allstate common shareholders’ equity and does not reflect the overall profitability of our business. A reconciliation of return on Allstate common shareholders' equity and adjusted net income return on Allstate common shareholders' equity can be found in the schedule, "Return on Allstate Common Shareholders' Equity". Book value per common share, excluding the impact of unrealized net capital gains and losses on fixed income securities, is a ratio that uses a non-GAAP measure. It is calculated by dividing Allstate common shareholders’ equity after excluding the impact of unrealized net capital gains and losses on fixed income securities by total common shares outstanding plus dilutive potential common shares outstanding. We use the trend in book value per common share, excluding the impact of unrealized net capital gains and losses on fixed income securities, in conjunction with book value per common share to identify and analyze the change in net worth applicable to management efforts between periods. We believe the non-GAAP ratio is useful to investors because it eliminates the effect of items that can fluctuate significantly from period to period and are generally driven by economic developments, primarily capital market conditions, the magnitude and timing of which are generally not influenced by management, and we believe it enhances understanding and comparability of performance by highlighting underlying business activity and profitability drivers. We note that book value per common share, excluding the impact of unrealized net capital gains and losses on fixed income securities, is a measure commonly used by insurance investors as a valuation technique. Book value per common share is the most directly comparable GAAP measure. Book value per common share, excluding the impact of unrealized net capital gains and losses on fixed income securities, should not be considered a substitute for book value per common share, and does not reflect the recorded net worth of our business. A reconciliation of book value per common share, excluding the impact of unrealized net capital gains on fixed income securities, and book value per common share can be found in the schedule, "Book Value per Common Share and Debt to Capital". The Allstate Corporation 3Q24 Supplement 17

Glossary Consolidated Operations Accident and health insurance premiums and contract charges are reported in the Allstate Health and Benefits segment and include employer voluntary benefits, group health and individual health products. Adjusted net income is the GAAP segment measure used for the Protection Services, Allstate Health and Benefits, and Corporate and Other segments. Average Allstate common shareholders' equity and average adjusted Allstate common shareholders' equity are determined using a two-point average, with the beginning and ending Allstate common shareholders' equity and Allstate adjusted common shareholders' equity, respectively, for the twelve-month period as data points. Other revenue primarily represents fees collected from policyholders relating to premium installment payments, commissions on sales of non-proprietary products, sales of identity protection services, fee-based services and other revenue transactions. Property and casualty insurance premiums are reported in the Allstate Protection and Protection Services segments and include auto, homeowners, other personal lines, commercial lines and other business lines insurance products, as well as consumer product protection plans, roadside assistance and finance and insurance products. Property-Liability Annualized average earned premium is calculated by annualizing net earned premium reported in the quarter and year-to-date divided by policies in force at quarter end. Average premium - gross written: Gross premiums written divided by issued item count. Gross premiums written include the impacts from discounts, surcharges and ceded reinsurance premiums and exclude the impacts from mid- term premium adjustments and premium refund accruals. Average premiums represent the appropriate policy term for each line, which is generally 6 months for auto and 12 months for homeowners. Claims expense ratio excluding catastrophe expense: Incurred loss adjustment expenses, net of reinsurance, excluding expenses related to catastrophes. These expenses are embedded within the loss ratio. Expense ratio: Other revenue is deducted from other costs and expenses in the expense ratio calculation. New issued applications: Item counts of automobile and homeowner insurance applications for insurance policies that were issued during the period, regardless of whether the customer was previously insured by another Allstate Protection brand. Other business lines primarily represent commissions earned and other costs and expenses for Ivantage, non-proprietary life and annuity products, and lender-placed products. Renewal ratio: Renewal policy item counts issued during the period, based on contract effective dates, divided by the total policy item counts issued generally 6 months prior for auto or 12 months prior for homeowners. Protection Services Other costs and expenses may include amortization of deferred policy acquisition costs, operating costs and expenses, and restructuring and related charges. Revenue may include net premiums earned, intersegment insurance premiums and service fees, other revenue, revenue earned from external customers and net investment income. Allstate Health and Benefits Benefit ratio is accident, health and other policy benefits less interest credited to contractholder funds, divided by premiums and contract charges. Employer voluntary benefits includes supplemental life and health products offered through workplace enrollment. Group health includes health products and administrative services sold to employers. Individual health includes short-term medical and other health products sold directly to individuals. Investments Duration measures the price sensitivity of assets and liabilities to changes in interest rates. Equity securities include investments in exchange traded and mutual funds whose underlying investments are fixed income securities. Interest-bearing investments comprise fixed income securities, mortgage loans, short-term investments, and other investments including bank loans and derivatives. Internal rate of return is one of the measures we use to evaluate the performance of these investments. The IRR represents the rate of return on the investments considering the cash flows paid and received and, until the investment is fully liquidated, the estimated value of investment holdings at the end of the measurement period. The calculated IRR for any measurement period is highly influenced by the values of the portfolio at the beginning and end of the period, which reflect the estimated fair values of the investments as of such dates. As a result, the IRR can vary significantly for different measurement periods based on macroeconomic or other events that impact the estimated beginning or ending portfolio value, such as the global financial crisis. Our IRR calculation method may differ from those used by other investors. The timing of the recognition of income in the financial statements may differ significantly from the cash distributions and changes in the value of these investments. Limited partnership interests: Income from equity method of accounting LP is generally recognized on a three-month delay due to the availability of the investee financial statements. LP and other investments comprise limited partnership interests and other alternative investments, including real estate investments classified as other investments. Market-based investments include publicly traded equity securities classified as limited partnerships. Market-based strategy seeks to deliver predictable earnings aligned to business needs and take advantage of short-term opportunities primarily through public and private fixed income investments and public equity securities. Performance-based strategy seeks to deliver attractive risk-adjusted returns and supplement market risk with idiosyncratic risk primarily through investments in private equity, including infrastructure investments, and real estate, most of which were limited partnerships. Pre-tax yields: Quarterly pre-tax yield is calculated as annualized quarterly investment income, before investment expense divided by the average of the ending investment balances of the current and prior quarter. Year-to-date pre-tax yield is calculated as annualized year-to-date investment income, before investment expense divided by the average of investment balances at the beginning of the year and the end of each quarter during the year. For the purposes of the pre-tax yield calculation, income for directly held real estate and other investments is net of investee level expenses (asset level operating expenses reported in investment expense). Fixed income securities investment balances exclude unrealized capital gains and losses. Equity securities investment balances use cost in the calculation. Total return on investment portfolio is calculated from GAAP results, including the total of net investment income, net gains and losses on investments and derivative instruments, the change in unrealized net capital gains and losses, and the change in the difference between fair value and carrying value of mortgage and bank loans divided by the average fair value balances. The Allstate Corporation 3Q24 Supplement 18