PERSHING SQUARE INC.

Trading Plans

During the quarter ended September 30, 2026, no directors or officers, as defined in Rule 16a-1(f), adopted orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” each as defined in Regulation S-K Item 408.

Submission of Shareholder Proposals and Shareholder Director Nominations for the 2027 Annual Meeting of Shareholders

In accordance with Rule 14a-8 under the Securities Exchange Act of 1934, as amended (“Rule 14a-8”) and the Bylaws (the “Bylaws”) of PS Inc., the deadlines for the receipt of any shareholder proposals and director nominations to be considered at the 2027 Annual Meeting of Shareholders (the “2027 Annual Meeting”) are set forth below.

Any shareholder proposal submitted pursuant to Rule 14a-8 for inclusion in PS Inc.’s proxy materials for the 2027 Annual Meeting should be sent to PS Inc.’s secretary by mail to 787 Eleventh Avenue, 9th Floor, NY, NY 10019, Attn: Legal Department and must be received by PS Inc.’s secretary no later than the close of business on December 6, 2026. Any such proposal also needs to comply with the SEC shareholder proposal rules and any applicable law, including the eligibility requirements set forth in Rule 14a-8.

In addition, any shareholder seeking to nominate a director or to bring other business before the 2027 Annual Meeting outside of Rule 14a-8 under the advance notice provisions included in the Bylaws must provide timely notice, as set forth in the Bylaws. Specifically, written notice of any such proposed business or nomination should be sent to PS Inc.’s secretary by mail to 787 Eleventh Avenue, 9th Floor, NY, NY 10019, Attn: Legal Department and must be received by PS Inc.’s secretary no earlier than the close of business on February 1, 2027 and no later than the close of business on March 3, 2027. Any notice of proposed business or nomination also must comply with the notice and other requirements set forth in the Bylaws (which includes, for nominations, information required under Rule 14a-19 under the Exchange Act) and with any applicable law.