MATERIAL MODIFICATION TO RIGHTS OF SECURITY HOLDERS. The information set forth in the Introductory Note and Items 2.01, 3.01, 5.01 and 5.03 of this Current Report on Form 8-K is incorporated into this

On June 26, 2026, in connection with the closing of the Merger, ProAssurance notified the New York Stock Exchange (the “NYSE”) of the completion of the Merger and requested that the NYSE (i) suspend trading of ProAssurance Common Stock on the NYSE [before the opening of trading] on June 26, 2026 and (ii) file a notification of removal from listing on Form 25 with the SEC to delist ProAssurance Common Stock from the NYSE and deregister the ProAssurance Common Stock under Section 12(b) of the S…

On the terms and subject to the conditions set forth in the Merger Agreement, at the effective time of the Merger (the “Effective Time”), and as a result of the Merger, each share of common stock, $0.01 par value, of ProAssurance (“ProAssurance Common Stock”) that was issued and outstanding immediately prior to the Effective Time (other than the Excluded Shares (as defined in the Merger Agreement)) was converted into the right to receive $25.00 per share in cash, without interest (the “Merger…

by reference. At the Effective Time, a change of control of ProAssurance occurred. Merger Sub merged with and into ProAssurance, the separate corporate existence of Merger Sub ceased, and ProAssurance was the surviving corporation in the Merger and, as a result, is now a wholly owned subsidiary of The Doctors Company.

In connection with the completion of the Merger, on June 26, 2026, all outstanding obligations in respect of principal, interest and fees under that certain Second Amended and Restated Credit Agreement, dated as of April 28, 2023 (as amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”) by and among ProAssurance, the Lenders from time to time party thereto and U.S. Bank National Association, as administrative agent, were repaid, all commitments under…

The change is due to a merger, resulting in new directors and officers for the Surviving Corporation.

OTHER EVENTS. As previously announced, on March 19, 2025, ProAssurance Corporation, a Delaware corporation (“ProAssurance”), The Doctors Company, a California-domiciled reciprocal inter-insurance exchange (“The Doctors Company”), and Jackson Acquisition Corporation, a Delaware corporation and a wholly owned subsidiary of The Doctors Company (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”), pursuant to which, on the terms and subject to the conditions set f…

OTHER EVENTS. As previously disclosed, on March 19, 2025, ProAssurance entered into an Agreement and Plan of Merger (the “Merger Agreement”) with The Doctors Company, a California-domiciled reciprocal inter-insurance exchange, and Jackson Acquisition Corporation, a Delaware corporation and a wholly owned subsidiary of The Doctors Company (“Merger Sub”), pursuant to which, on the terms and subject to the conditions set forth in the Merger Agreement, Merger Sub will merge with and into ProAssur…

RESULTS OF OPERATION AND FINANCIAL CONDITION On May 5, 2026 we issued a news release reporting the results of our operations for the quarter ended March 31, 2026. The text of the release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

RESULTS OF OPERATION AND FINANCIAL CONDITION On February 23, 2026 we issued a news release reporting the results of our operations for the quarter and year ended December 31, 2025. The text of the release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

CEO — Edward L. Rand, Jr.: The filing discloses compensation arrangements (Section 280G mitigation payments) for named executive officers in connection with a merger, rather than a departure or appointment event.

RESULTS OF OPERATION AND FINANCIAL CONDITION On November 4, 2025 we issued a news release reporting the results of our operations for the quarter ended September 30, 2025. The text of the release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

RESULTS OF OPERATION AND FINANCIAL CONDITION On August 5, 2025 we issued a news release reporting the results of our operations for the quarter ended June 30, 2025. The text of the release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

Director — Kedrick D. Adkins: The filing describes the routine annual election of directors and the orderly succession of an Audit Committee chair following a director's decision not to stand for re-election.

RESULTS OF OPERATION AND FINANCIAL CONDITION On May 6, 2025 we issued a news release reporting the results of our operations for the quarter ended March 31, 2025. The text of the release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

Entry into a Material Definitive Agreement On March 19, 2025, ProAssurance Corporation, a Delaware corporation (“ProAssurance), The Doctors Company, a California-domiciled reciprocal inter-insurance exchange (“Parent”), and Jackson Acquisition Corporation, a Delaware corporation and a wholly owned subsidiary of Parent (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”), pursuant to which, on the terms and subject to the conditions set forth in the Merger Agre…

RESULTS OF OPERATION AND FINANCIAL CONDITION On February 24, 2025 we issued a news release reporting the results of our operations for the quarter and year ended December 31, 2024. The text of the release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

RESULTS OF OPERATION AND FINANCIAL CONDITION On November 7, 2024 we issued a news release reporting the results of our operations for the quarter and nine months ended September 30, 2024. The text of the release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

RESULTS OF OPERATION AND FINANCIAL CONDITION On August 8, 2024 we issued a news release reporting the results of our operations for the quarter and six months ended June 30, 2024. The text of the release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

Director: This is a routine annual board election involving the election of new directors and the non-re-election of long-serving members, resulting in a standard board size reduction.

RESULTS OF OPERATION AND FINANCIAL CONDITION On May 6, 2024 we issued a news release reporting the results of our operations for the quarter and year ended March 31, 2024. The text of the release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

Director — Samuel A. Di Piazza, Jr., Fabiola Cobarrubias, Edward L. Rand, Jr., Katisha T. Vance: The filing discloses the routine re-election of existing directors at the annual stockholders' meeting, which is a standard governance event with no executive departure.