Ategrity Specialty Insurance Co Holdings

Disclosure in lieu of reporting on a Current Report on Form 8-K.

Entry into Material Definitive Agreement

Effective November 1, 2026, Ategrity Limited, a subsidiary of the Company, subscribed for limited partnership interests in, and became a limited partner of ZP Utility Fund, L.P. (the “New Feeder Fund”), and became party to the Fourth Amended and Restated Limited Partnership Agreement of the New Feeder Fund, dated as of October 1, 2018, in connection with the optimization of its investment in the Absolute Return Utility &

Infrastructure Fund (the “Master Fund”). Pursuant to this transaction, Ategrity Limited will move its existing investment in the Master Fund from the Utility Limited Partnership to the New Feeder Fund.

The New Feeder Fund, like the Utility Limited Partnership, operates as a feeder fund in a “master-feeder” structure, investing substantially all of its assets in the Master Fund. The New Feeder Fund includes other unaffiliated limited partners, and following the move of Ategrity Limited’s investment, the Company and its subsidiaries are expected to own approximately 29.1% of the New Feeder. The terms of Ategrity Limited’s investment in the New Feeder Fund’s Limited Partnership Agreement are substantially similar to those of the Amended and Restated Limited Partnership Agreement of the Utility Limited Partnership, which was previously filed as Exhibit 10.12 to the Company’s Registration Statement on Form S-1/A (File No. 333-286059), filed with the SEC on March 24, 2025. Accordingly, the transition will not change the underlying Master Fund in which the Company and its subsidiaries invest.

ZP Utility GP, LLC serves as general partner of the New Feeder Fund, and the Investment Manager serves as its investment manager. Both entities are affiliated with ZFSG, the Company’s controlling stockholder.

Material changes to the procedures by which security holders may recommend nominees to the board of directors.

None.

Insider trading arrangements and policies.

During the three months ended September 30, 2026, no director or “officer” (as defined in Rule 16a-1(f) under the Exchange Act) of the Company adopted orterminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 of Regulation S-K.