Insider · CIK 0001056513
William A Ackman
Files at Pershing Square SPARC Holdings, Ltd./DE, HHH (Howard Hughes Holdings Inc.), PSUS (Pershing Square USA, Ltd.), PS (PERSHING SQUARE INC.). First filing May 1, 2026, latest May 4, 2026.
William A Ackman files SEC Form 4 as director, 10% owner, CEO and chair at PSUS (Pershing Square USA, Ltd.), and also at PS (PERSHING SQUARE INC.), Pershing Square SPARC Holdings, Ltd./DE, HHH (Howard Hughes Holdings Inc.). Since May 1, 2026, William A Ackman has reported 2 open-market buys worth $260M and 0 open-market sells worth $0, the latest filed on May 4, 2026.
A track record needs three past buys with six months of prices behind them; William A Ackman has 0, so none is measured yet.
The newest scored trade: bought $19M of PS on Apr 30, 2026, filed May 4, 2026, scored 60 (notable). In the last 12 months: 2 buys worth $260M and 0 sells worth $0.
Where the trades landed
Last year at the 2 companies this insider has traded most, with each buy and sell on the bar it happened.
PS: PERSHING SQUARE INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
PSUS: Pershing Square USA, Ltd.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 60Notable | PSbuy PERSHING SQUARE INC. | $19M 800,000 shares | +114% | - | |
| 83Strong | Pershing Square USA, Ltd. | $241M 4,897,171 shares | - | +4% from low0% from high |
Transactions
Every row this insider has filed, 17 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Apr 30, 2026 | PS PERSHING SQUARE INC. | JOther Common Stock | +700,000 | - | - | 700,000 | May 4, 2026 |
| Apr 30, 2026 | PS PERSHING SQUARE INC. | POpen-market purchase Common Stock | +81,762 | $22.61 | $1.8M | 781,762 | May 4, 2026 |
| Apr 30, 2026 | PS PERSHING SQUARE INC. | POpen-market purchase Common Stock | +659,540 | $23.88 | $16M | 1,441,302 | May 4, 2026 |
| Apr 30, 2026 | PS PERSHING SQUARE INC. | POpen-market purchase Common Stock | +58,698 | $24.20 | $1.4M | 1,500,000 | May 4, 2026 |
| Apr 30, 2026 | PS PERSHING SQUARE INC. | JOther Common Stockindirect: See footnotes | +168,200 | - | - | 168,200 | May 4, 2026 |
| Apr 30, 2026 | PS PERSHING SQUARE INC. | JOther Common Stockindirect: See footnotes | +4,240 | - | - | 304,240 | May 4, 2026 |
| Apr 30, 2026 | PS PERSHING SQUARE INC. | AGrant or award Common Stockindirect: See footnotes | +10,489 | - | - | 314,729 | May 4, 2026 |
| Apr 28, 2026 | PS PERSHING SQUARE INC. | GGift Common Stockindirect: See footnote | -300,000 | $0.00 | $0 | 83,700,000 | May 4, 2026 |
| Apr 30, 2026 | PS PERSHING SQUARE INC. | DDisposition to issuer Common Stockindirect: See footnote | -6,874,237 | $0.00 | $0 | 76,825,763 | May 4, 2026 |
| Apr 28, 2026 | PS PERSHING SQUARE INC. | AGrant or award M Units of Pershing Square Partner Group, LLCderivativeindirect: See footnote | +92,878,204 | - | - | 92,878,204 | May 4, 2026 |
| Apr 30, 2026 | PSUS Pershing Square USA, Ltd. | POpen-market purchase Common Shares of Beneficial Interest | +3,500,000 | $50.00 | $175M | 3,500,000 | May 1, 2026 |
| Apr 30, 2026 | PSUS Pershing Square USA, Ltd. | POpen-market purchase Common Shares of Beneficial Interest | +500,000 | $42.00 | $21M | 4,000,000 | May 1, 2026 |
| Apr 30, 2026 | PSUS Pershing Square USA, Ltd. | POpen-market purchase Common Shares of Beneficial Interestindirect: See footnotes | +841,000 | $50.00 | $42M | 841,000 | May 1, 2026 |
| Apr 30, 2026 | PSUS Pershing Square USA, Ltd. | POpen-market purchase Common Shares of Beneficial Interestindirect: See footnotes | +21,200 | $50.00 | $1.1M | 21,200 | May 1, 2026 |
| Apr 30, 2026 | PSUS Pershing Square USA, Ltd. | POpen-market purchase Common Shares of Beneficial Interestindirect: See footnotes | +34,971 | $50.00 | $1.7M | 56,171 | May 1, 2026 |
| Apr 21, 2026 | - Pershing Square SPARC Holdings, Ltd./DE | JOther Common Stockindirect: See footnotes | -0 | - | - | 422,533 | Apr 23, 2026 |
| Apr 21, 2026 | - Pershing Square SPARC Holdings, Ltd./DE | JOther Sponsor Warrantsderivativeindirect: See footnotes | -0 | - | - | - | Apr 23, 2026 |
Questions about William A Ackman
Answered from the filings on this page, as of the latest one.
Is William A Ackman buying or selling?
In the last 12 months William A Ackman reported 2 open-market buys worth $260M and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $19M of PS on Apr 30, 2026. Grants, option exercises and tax withholding are not counted.
How did William A Ackman's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and William A Ackman has 0.
Where does William A Ackman file Form 4?
William A Ackman has filed Form 4 at PSUS (Pershing Square USA, Ltd.) as Chief Executive Officer; PS (PERSHING SQUARE INC.) as CEO & Chairman; Pershing Square SPARC Holdings, Ltd./DE as Chief Executive Officer; HHH (Howard Hughes Holdings Inc.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.