X0609 4 2026-04-28 0002026053 PERSHING SQUARE INC. PS 0001056513 ACKMAN WILLIAM A false C/O PERSHING SQUARE INC., 787 ELEVENTH AVENUE, 9TH FLOOR NEW YORK NY 10019 true true true CEO & Chairman 0002129701 WAA Management LLC false 787 11TH AVENUE 9TH FLOOR NEW YORK NY 10019 true false Common Stock 2026-04-30 4 J 0 700000 A 700000 D Common Stock 2026-04-30 4 P 0 81762 22.609 A 781762 D Common Stock 2026-04-30 4 P 0 659540 23.875 A 1441302 D Common Stock 2026-04-30 4 P 0 58698 24.204 A 1500000 D Common Stock 2026-04-30 4 J 0 168200 A 168200 I See footnotes Common Stock 2026-04-30 4 J 0 4240 A 304240 I See footnotes Common Stock 2026-04-30 4 A 0 10489 A 314729 I See footnotes Common Stock 2026-04-28 4 G 0 300000 0 D 83700000 I See footnote Common Stock 2026-04-30 4 D 0 6874237 0 D 76825763 I See footnote Common Stock 16000000 I See footnote M Units of Pershing Square Partner Group, LLC 2026-04-28 4 A 0 92878204 A Common Stock 86493537 92878204 I See footnote On April 30, 2026, the Issuer and Pershing Square USA, Ltd. ("PSUS") completed a combined transaction, consisting of (i) an initial public offering (the "PS IPO") and a concurrent private placement (the "PS Private Placement") of Issuer common stock and (ii) an initial public offering (the "PSUS IPO" and together with the PS IPO, the "combined IPO") and a concurrent private placement (the "PSUS Private Placement" and together with the PS Private Placement, the "combined private placement") of PSUS's Common Shares of Beneficial Interest ("PSUS Common Shares") (collectively, the "combined transaction"). Reflects the acquisition of Issuer common stock in connection with the combined IPO. In connection with the PS IPO, each initial investor acquired 1 share of Issuer common stock for no additional consideration for every 5 PSUS Common Shares that the investor purchased in the PSUS IPO. The price reported in Column 4 is a weighted average price. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (4) through (6) in this Form 4. Reflects the acquisition of Issuer common stock through multiple open market transactions at prices ranging from $22.030 to $23.025, inclusive. Reflects the acquisition of Issuer common stock through multiple open market transactions at prices ranging from $23.030 to $24.005, inclusive. Reflects the acquisition of Issuer common stock through multiple open market transactions at prices ranging from $24.030 to $24.400, inclusive. Reflects Issuer common stock held by a limited liability company that is wholly owned by the Reporting Person's spouse. Reflects a contribution of 300,000 shares of Issuer common stock by the Reporting Person on April 28, 2026. Reflects Issuer common stock held by trusts for the benefit of, or whose beneficiaries include, the Reporting Person's family members. Reflects the acquisition of Issuer common stock in connection with the combined private placement. In connection with the PS Private Placement, each initial investor acquired 1.5 shares of Issuer common stock for no additional consideration for every 5 PSUS Common Shares that the investor purchased in the PSUS Private Placement. The Reporting Person may be deemed to be the beneficial owner of these shares for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The Reporting Person disclaims beneficial ownership of these shares, except to the extent of any pecuniary interest therein. Reflects shares directly held by WAA Management LLC, of which the Reporting Person is the sole manager. Pursuant to the Amended and Restated Purchase Price Adjustment Agreement (the "A&R Purchase Price Adjustment Agreement") by and among the Issuer, Pershing Square Partner Group, LLC ("PSPG") and the other parties thereto (including the Reporting Person), PSPG and other parties thereto (including the Reporting Person) contributed Issuer common stock to the Issuer in an aggregate amount equal to the number of shares of Issuer common stock issued in connection with the combined transaction. Each party's contribution ("Purchase Price Adjustment Contribution") corresponds to such party's pro rata share of the aggregate number of shares of Issuer common stock held by the parties as of immediately prior to the completion of the combined transaction. Reflects shares directly held a grantor retained annuity trust, of which the Reporting Person is the trustee. These M Units ("M Units") of PSPG were granted to the Reporting Person pursuant to an amendment of PSPG's governing document on a pro rata basis of the Reporting Person's prior interest in PSPG on April 28, 2026. These M Units are fully vested. The grant was approved by the board of directors of the Issuer in accordance with Rule 16b-3 under the Exchange Act. Upon vesting, each M Unit may be redeemed by the holder, subject to certain conditions, for shares of Issuer common stock held by PSPG on a one-for-one basis, subject to certain adjustments pursuant to the terms approved by the board of directors of the Issuer. These redemption rights do not expire. Reflects the pro rata adjustment, pursuant to PSPG's governing document in connection with its Purchase Price Adjustment Contribution, of the number of shares of Issuer common stock for which each M Unit may be redeemed. By: /s/ William A. Ackman 2026-05-04 By: WAA Management LLC, By: /s/ William A. Ackman, Manager 2026-05-04