Arch Capital annual meeting elects directors, approves say-on-pay and ESPP; declares preferred dividends

Item 5 . The vote on the ratification of the selection of PricewaterhouseCoopers LLP as ACGL’s independent registered public accounting firm for the year ending December 31, 2023. The voting results were as follows: FOR AGAINST ABSTAIN BROKER NON-VOTES 315,616,209 10,876,150 116,892 —

Item 2 . The vote on a proposal on advisory vote to approve named executive officer compensation. The voting results were as follows: FOR AGAINST ABSTAIN BROKER NON-VOTES 297,263,015 19,296,230 193,654 9,856,352

Item 6 . The vote on the election of certain individuals as Designated Company Directors of certain of ACGL’s non-U.S. subsidiaries. The voting results were as follows: DIRECTOR FOR AGAINST WITHHOLD BROKER NON-VOTES Matthew Dragonetti 316,461,698 85,569 205,632 9,856,352 Seamus Fearon 316,424,289 121,252 207,358 9,856,352 Beau H. Franklin 315,636,074 883,453 233,372 9,856,352 Jerome Halgan 316,388,331 159,756 204,812 9,856,352 James Haney 316,492,079 61,054 199,766 9,856,352 Chris Hovey 316,452,684 96,363 203,852 9,856,352 Pierre Jal 316,455,279 96,858 200,762 9,856,352 François Morin 298,983,682 17,592,808 176,409 9,856,352 David J. Mulholland 316,489,134 67,835 195,930 9,856,352 Chiara Nannini 295,921,853 20,624,503 206,543 9,856,352 Maamoun Rajeh 316,494,241 75,120 183,538 9,856,352 Christine Todd 316,503,231 57,143 192,525 9,856,352

Item 4. The vote on a proposal to approve the Amended and Restated Arch Capital Group Ltd. 2007 Employee Share Purchase Plan. The voting results were as follows: FOR AGAINST ABSTAIN BROKER NON-VOTES 316,344,285 282,835 125,779 9,856,352

ITEM 5.07 Submission of Matters to a Vote of Security Holders . Arch Capital Group Ltd.'s ("ACGL") annual meeting of shareholders was held on May 4, 2023. At the meeting, the holders of 326,609,251 common shares, which represents approximately 88 percent of the outstanding shares entitled to vote as of the record date of March 7, 2023, were represented in person or by proxy. Matters submitted to shareholders at the meeting and the voting results thereof were as follows: Item 1. The vote on the election of the five Class I directors to hold office for a term of three years and until their respective successors are duly elected and qualified or their earlier resignation or removal.The voting results were as follows: NOMINEE FOR AGAINST WITHHELD BROKER NON-VOTES Francis Ebong 280,794,829 35,793,616 164,454 9,856,352 Eileen Mallesch 304,293,583 12,310,583 148,733 9,856,352 Louis J. Paglia 299,919,845 16,678,891 154,163 9,856,352 Brian S. Posner 296,651,352 19,940,542 161,005 9,856,352 John

Item 3 . The vote on a proposal on advisory vote of preferred frequency for advisory vote on named executive officer compensation.The voting results were as follows: 1 YEAR 2 YEARS 3 YEARS ABSTAIN 312,697,512 319,929 3,586,599 148,859