Reserves for Losses and Loss Settlement Expenses | RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES Property insurance indemnifies an insured with an interest in physical property for loss of, or damage to, such property or the loss of its income-producing abilities. Casualty insurance is primarily concerned with losses caused by injuries to persons and legal liability imposed on the insured for such injury or for damage to property of others. In most cases, casualty insurance also obligates the insurance company to provide a defense for the insured in litigation, arising out of events covered by the policy. Liabilities for losses and loss settlement expenses reflect management's best estimates at a given point in time of what we expect to pay for claims that have been reported and those that have been incurred but not reported ("IBNR"), based on known facts, circumstances, and historical trends. Because property and casualty insurance reserves are estimates of the unpaid portions of incurred losses that have been reported to us, as well as losses that have been incurred but not reported, the establishment of appropriate reserves, including reserves for catastrophes, is an inherently uncertain and complex process. The ultimate cost of losses and related loss settlement expenses may vary materially from recorded amounts. We regularly update our reserve estimates as new information becomes available and as events unfold that may affect the resolution of unsettled claims. Changes in prior year reserve estimates, which may be material, are reported as a component of losses and loss settlement expenses incurred in the period such changes are determined. The determination of reserves (particularly those relating to liability lines of insurance that have relatively longer lag in claim reporting) requires significant estimates to reasonably project expected future claim reporting and payment patterns. If, during the course of our regular monitoring of reserves, we determine that coverages previously written are incurring higher than expected losses, we will evaluate an appropriate response that may include, among other things, increasing the related reserves. Any adjustments we make to reserves are reflected in operating results in the year in which we make those adjustments. In addition to our internal process, we engage a third-party firm to provide an independent and unbiased assessment of our reserves to assist in establishing appropriate reserves. On a quarterly basis, we perform a detailed review of IBNR reserves. There are two fundamental types or sources of IBNR reserves. We record IBNR reserves for "normal" types of claims and also specific IBNR reserves related to unique circumstances or events. A major hurricane is an example of an event that might necessitate establishing specific IBNR reserves because an analysis of existing historical data would not provide an appropriate estimate. We do not discount loss reserves based on the time value of money. The following table provides an analysis of changes in our property and casualty losses and loss settlement expense reserves for 2024, 2023 and 2022 (net of reinsurance amounts): Years Ended December 31, 2024 2023 2022 Gross liability for losses and loss settlement expenses $ 1,638,755 $ 1,497,274 $ 1,514,265 Ceded losses and loss settlement expenses (191,640) (146,875) (112,900) Net liability for losses and loss settlement expenses $ 1,447,115 $ 1,350,399 $ 1,401,365 Losses and loss settlement expenses incurred Current year $ 745,813 $ 701,664 $ 624,411 Prior years (1,208) 67,750 12,890 Total incurred $ 744,605 $ 769,414 $ 637,301 Losses and loss settlement expense payments Current year $ 186,322 $ 191,899 $ 215,891 Prior years 406,699 480,800 472,377 Total paid $ 593,021 $ 672,699 $ 688,268 Net liability for losses and loss settlement expenses $ 1,598,699 $ 1,447,115 $ 1,350,399 Ceded losses and loss settlement expenses 198,083 191,640 146,875 Gross liability for losses and loss settlement expenses $ 1,796,782 $ 1,638,755 $ 1,497,274 Generally, we base case reserves for each claim on the estimated ultimate exposure for that claim. However, due to the uncertainty associated with the ultimate claim settlement values and additional claims not yet reported, we believe that it is appropriate and reasonable to establish a best estimate for reserves within a range of reasonable estimates, especially when we are reserving for claims for bodily injury, disabilities and similar claims, for which settlements and verdicts can vary widely. We believe our approach produces recorded reserves that are consistent as to their relative position within a range of reasonable reserves from year-to-year. However, conditions and trends that have affected the reserve development for a given year do change. Therefore, such development cannot be used to project future reserve redundancies or deficiencies. Our IBNR methodologies and assumptions are reviewed periodically for appropriateness and reasonability. Items reviewed and revised include development factors for paid and reported loss, paid development factors for allocated LAE, expected loss and LAE ratios, as well as selected frequency and severity trend factors. Because of the type of property coverage we write, we have potential exposure to environmental pollution, mold and asbestos claims. Our underwriters are aware of these exposures and use riders or endorsements to limit exposure. We are not aware of any significant contingent liabilities related to environmental issues. Reserve Development Prior year development improved over 2023 with neutral development recorded in 2024 as favorable results in several lines were offset by increases in other liability reserves exposed to potential future uncertainty associated with social inflation influences prevalent across the industry. The adverse prior year development for the twelve-month period ended December 31, 2023 included a significant contribution to reserves in second quarter related to excess casualty exposures and other liability lines. The significant drivers of the adverse reserve development in 2023 were the commercial other liability and commercial automobile lines of business. The adverse development in commercial other liability was primarily in our excess and surplus lines excess casualty book along with some adverse development in standard umbrella and construction defect due to increasing severity pressures. The increases on these longer tailed lines, especially in accident years 2016-2019, related to social and economic inflation. The commercial automobile line of business also experienced adverse development related to increasing severity largely in post-COVID-19 accident years. The remaining lines experienced small amounts of reserve development. The significant drivers of the adverse reserve development in 2022 were commercial other liability and commercial fire and allied lines. This was offset partially by favorable development in commercial automobile, workers' compensation and fidelity and surety. Commercial other liability experienced adverse development as emerging claim experience and deeper data insights during 2022 pointed to an increase in loss exposure on these longer tailed businesses driven in part by social and economic inflation. Commercial fire and allied developed adversely driven by catastrophe losses and increased severity on non-catastrophe claims. The favorable development for commercial automobile was from both loss and LAE where reductions of reserves for unpaid liabilities were more than sufficient to offset actual paid loss and paid LAE reductions in reserves for IBNR claims also contributed favorable development in addition to LAE where reductions in reserves were more than sufficient to offset payments. The following tables provide information about incurred and paid losses and loss settlement expense development as of December 31, 2024, net of reinsurance, as well as cumulative development, cumulative claim frequency and IBNR liabilities. The cumulative number of reported claims, for calendar years 2024, 2023 and 2022, are counted for all lines of business on a per claimant per coverage basis and a single event may result in multiple claims due to the involvement of multiple individual claimants and/or multiple independent coverages. Claim counts for calendar years 2016 and prior are counted on a per claim and per coverage basis. Claim counts include open claims, claims that have been paid and closed, and reported claims that have been closed without the need for any payment. Line of business: Commercial other liability Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2024 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 137,385 $ 125,307 $ 120,005 $ 127,091 $ 129,945 $ 131,325 $ 132,694 $ 136,161 $ 137,040 $ 138,091 $ 5,018 706 8,130 2016 139,144 130,041 136,275 142,397 140,784 148,324 153,490 159,284 164,989 9,335 25,845 10,013 2017 139,602 139,032 152,547 156,369 159,653 173,091 174,013 176,073 13,194 36,471 9,482 2018 163,059 172,894 176,496 187,841 197,696 207,501 213,536 21,040 50,477 9,293 2019 149,173 169,344 183,918 179,667 186,205 187,539 26,006 38,366 8,745 2020 171,013 158,022 162,471 179,080 181,687 38,560 10,674 6,579 2021 145,822 162,359 162,879 176,770 53,324 30,949 3,646 2022 161,826 175,579 181,924 64,502 20,097 3,232 2023 172,398 173,529 84,919 1,132 2,671 2024 215,235 173,740 1,722 Total $ 1,809,372 Line of business: Commercial other liability Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 11,185 $ 27,182 $ 53,901 $ 74,292 $ 96,339 $ 104,472 $ 109,540 $ 117,734 $ 126,364 $ 129,638 2016 13,782 38,184 63,526 88,885 102,757 115,107 126,561 136,400 141,445 2017 17,716 43,172 70,500 91,984 111,085 128,430 138,127 148,295 2018 16,200 44,772 79,168 105,515 130,942 158,851 179,469 2019 18,221 46,986 72,179 102,510 127,650 138,236 2020 17,011 43,596 60,114 98,592 110,931 2021 12,434 33,642 59,278 90,607 2022 10,468 42,168 69,896 2023 9,335 41,847 2024 10,732 Total $ 1,061,095 All outstanding liabilities for unpaid losses and loss settlement expenses before 2015, net of reinsurance 16,838 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 765,115 Line of business: Commercial fire and allied Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2024 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 103,177 $ 108,293 $ 110,633 $ 108,235 $ 105,218 $ 104,646 $ 105,043 $ 104,978 $ 105,385 $ 105,451 $ 660 2,274 7,603 2016 147,473 144,208 143,721 143,724 143,108 144,109 145,351 142,644 142,814 639 (4,659) 9,883 2017 155,139 160,240 160,945 161,693 161,232 161,456 161,611 161,051 477 5,912 13,533 2018 143,280 146,950 146,378 146,010 147,356 147,058 147,085 709 3,805 10,799 2019 164,030 155,482 158,475 157,667 155,850 155,114 660 (8,916) 11,233 2020 207,207 201,391 202,929 207,256 209,588 1,710 2,381 14,666 2021 156,794 169,669 157,905 157,534 (15,185) 740 5,367 2022 161,776 170,594 171,958 12,470 10,182 4,294 2023 164,526 147,904 22,624 (16,622) 3,569 2024 124,467 49,233 2,499 Total $ 1,522,966 Line of business: Commercial fire and allied Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 67,217 $ 90,454 $ 95,515 $ 101,367 $ 104,115 $ 103,975 $ 104,127 $ 104,339 $ 104,638 $ 104,699 2016 92,895 125,962 132,429 137,907 139,353 141,104 142,248 141,008 142,038 2017 99,484 137,058 145,900 152,219 157,512 159,286 159,456 160,487 2018 92,770 123,559 133,703 137,794 141,841 145,021 145,954 2019 100,980 136,084 142,342 150,196 151,739 153,893 2020 128,704 173,055 192,902 197,602 205,357 2021 97,451 140,406 154,242 161,705 2022 96,160 138,479 150,710 2023 75,304 106,083 2024 58,228 Total $ 1,389,153 All outstanding liabilities for unpaid losses and loss settlement expenses before 2015, net of reinsurance 1,439 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 135,251 Line of business: Commercial automobile Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2024 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 125,506 $ 129,816 $ 132,206 $ 138,987 $ 137,395 $ 137,335 $ 136,826 $ 137,240 $ 137,934 $ 137,390 $ (2) 11,884 20,091 2016 174,018 175,357 174,337 175,655 173,823 174,588 175,016 175,387 173,858 67 (160) 27,310 2017 227,919 224,553 235,110 233,159 233,007 233,535 234,229 231,093 450 3,174 32,910 2018 236,629 245,173 253,045 255,017 255,409 255,198 252,642 1,570 16,013 34,495 2019 279,229 291,139 289,929 282,155 282,680 276,095 2,143 (3,134) 34,773 2020 243,360 216,951 196,412 194,162 188,556 2,396 (54,804) 24,218 2021 179,880 172,599 173,708 169,172 4,856 (10,708) 12,371 2022 157,165 161,672 160,303 14,521 3,138 10,220 2023 153,502 146,433 22,329 (7,069) 9,478 2024 156,028 51,335 7,871 Total $ 1,891,571 Line of business: Commercial automobile Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 50,782 $ 78,225 $ 99,201 $ 118,395 $ 129,317 $ 134,100 $ 135,462 $ 137,075 $ 137,085 $ 137,116 2016 66,013 103,528 128,156 148,224 164,341 168,950 171,380 172,928 173,661 2017 81,311 126,644 166,170 197,893 212,947 223,076 228,749 228,129 2018 81,572 138,092 187,405 211,123 235,519 244,284 249,009 2019 91,919 153,244 205,614 246,800 264,151 268,355 2020 67,660 109,686 138,158 161,798 174,175 2021 64,381 99,116 128,283 146,436 2022 62,477 95,785 124,853 2023 56,175 85,483 2024 51,283 Total $ 1,638,501 All outstanding liabilities for unpaid losses and loss settlement expenses before 2015, net of reinsurance 48 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 253,119 Line of business: Workers' compensation Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2024 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 53,788 $ 55,578 $ 51,003 $ 46,682 $ 46,019 $ 44,706 $ 43,751 $ 43,209 $ 43,654 $ 43,781 $ 1,181 (10,007) 5,686 2016 70,419 66,575 61,648 55,168 53,964 52,870 53,090 53,617 53,574 1,117 (16,845) 7,988 2017 76,184 69,528 55,982 51,874 49,362 47,801 48,074 47,943 1,398 (28,241) 8,226 2018 71,972 67,883 59,192 56,109 53,812 54,783 54,238 1,438 (17,734) 8,068 2019 52,136 49,189 49,336 48,945 49,084 49,807 (611) (2,329) 7,426 2020 45,365 46,612 43,724 46,624 45,524 (329) 159 4,603 2021 45,177 42,283 39,649 40,287 (1,050) (4,890) 1,897 2022 29,597 26,721 27,398 1,794 (2,199) 1,385 2023 29,262 28,742 3,302 (520) 1,174 2024 32,202 6,981 1,233 Total $ 423,496 Line of business: Workers' compensation Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 12,063 $ 27,304 $ 35,229 $ 38,424 $ 39,305 $ 40,034 $ 41,006 $ 41,211 $ 41,865 $ 41,978 2016 14,413 32,345 40,680 45,743 47,082 48,277 50,127 51,023 51,126 2017 14,647 31,309 38,083 41,672 43,833 45,508 45,742 46,154 2018 16,949 35,369 43,189 47,173 48,807 49,964 50,031 2019 13,582 29,668 38,382 43,044 46,101 47,308 2020 17,603 29,605 35,542 39,479 42,052 2021 17,949 29,453 34,074 36,512 2022 9,434 17,851 21,033 2023 10,227 18,085 2024 10,277 Total $ 364,556 All outstanding liabilities for unpaid losses and loss settlement expenses before 2015, net of reinsurance 15,978 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 74,918 Line of business: Personal Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2024 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 42,847 $ 41,088 $ 40,336 $ 40,368 $ 40,220 $ 40,194 $ 40,189 $ 40,190 $ 40,191 $ 40,058 $ 5 (2,789) 9,553 2016 48,072 45,840 45,379 45,961 45,113 45,297 45,199 45,179 45,185 26 (2,887) 11,905 2017 60,330 59,342 58,695 58,544 59,023 58,790 58,863 58,788 191 (1,542) 14,717 2018 51,639 51,721 52,715 52,062 51,457 51,115 51,216 113 (423) 13,691 2019 59,548 58,378 58,745 57,929 57,630 57,559 98 (1,989) 13,613 2020 81,206 73,761 73,204 72,531 72,174 472 (9,032) 17,123 2021 28,537 26,489 26,372 26,338 165 (2,199) 2,592 2022 1,493 2,287 3,127 195 1,634 64 2023 2,391 2,374 (1,535) (17) 11 2024 8,648 7,452 2 Total $ 365,466 Line of business: Personal Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 (Unaudited) 2015 $ 29,551 $ 37,431 $ 39,027 $ 39,428 $ 39,865 $ 40,029 $ 40,053 $ 40,053 $ 40,053 $ 40,053 2016 32,999 40,910 42,660 44,046 44,618 44,737 44,828 44,827 45,159 2017 42,135 53,111 55,982 57,169 57,824 58,206 58,377 58,597 2018 37,410 47,433 49,464 50,185 50,661 50,852 51,101 2019 40,544 52,390 54,935 56,658 56,852 56,971 2020 54,181 68,124 70,543 71,416 71,394 2021 20,298 23,829 24,889 25,764 2022 551 2,128 2,792 2023 297 3,089 2024 617 Total $ 355,538 All outstanding liabilities for unpaid losses and loss settlement expenses before 2015, net of reinsurance 237 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 10,165 The reconciliation of the net incurred and loss development tables to the liability for unpaid losses and loss settlement expenses in the consolidated statement of financial position is as follows: December 31, 2024 Net outstanding liabilities for unpaid losses and allocated loss settlement expenses: Commercial other liability $ 765,115 Commercial fire and allied 135,251 Commercial automobile 253,119 Commercial workers' compensation 74,918 Personal 10,165 All other lines 261,971 Net outstanding liabilities for unpaid losses and allocated loss settlement expenses 1,500,539 Net outstanding liabilities for unpaid unallocated loss settlement expenses 97,960 Fair value adjustment (purchase accounting adjustment for Mercer acquisition) 200 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance 1,598,699 Reinsurance recoverable on unpaid losses and allocated loss settlement expenses: Commercial other liability 91,561 Commercial fire and allied 5,706 Commercial automobile 57 Commercial workers' compensation 30,124 Personal 72 All other lines 70,755 Reinsurance recoverable on unpaid losses and allocated loss settlement expenses 198,275 Reinsurance fair value amortization (purchase accounting adjustment for Mercer acquisition) (192) Total reinsurance recoverable on unpaid losses and loss settlement expenses 198,083 Total gross liability for unpaid losses and loss settlement expenses $ 1,796,782 The following is supplementary information about average historical claims duration as of December 31, 2024. Average annual percentage payout of incurred claims by age, net of reinsurance Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9 Year 10 (Unaudited) Commercial other liability 7.6 % 14.7 % 14.8 % 15.7 % 11.2 % 8.4 % 6.4 % 5.9 % 4.7 % 2.4 % Commercial fire and allied 59.6 % 22.9 % 6.4 % 4.0 % 2.4 % 1.1 % 0.4 % — % 0.5 % 0.1 % Commercial automobile 36.0 % 21.0 % 16.9 % 12.4 % 7.7 % 3.1 % 1.7 % 0.6 % 0.2 % — % Commercial workers' compensation 32.9 % 31.4 % 14.5 % 7.9 % 4.0 % 2.4 % 1.6 % 1.0 % 0.8 % 0.3 % Personal 55.1 % 33.0 % 6.2 % 2.1 % 0.8 % 0.4 % 0.3 % 0.1 % 0.4 % — % |