Ackman William A: insider buys
Every open-market stock purchase reported by Ackman William A to the SEC on Form 4.
Total bought$259.88M
Purchases2
Companies2
Last purchase filedMay 4, 2026
Return on these buys-15%
Ackman William A has made 2 open-market purchases worth $259.88M in 2 companies since May 1, 2026, according to SEC Form 4 filings. The most recent was filed on May 4, 2026: 800,000 shares of PS at $23.77 (CEO & Chairman, Director, 10% Owner), worth $19.02M. The largest was $240.86M of PSUS on Apr 30, 2026. Taken together, these purchases are down 15% at the latest closing prices (split-adjusted, weighted by amount).
Companies Ackman William A bought
| Ticker | Company | Role | Buys | Total | Since buy | Last filed |
|---|---|---|---|---|---|---|
| PSUS | Pershing Square USA, Ltd. | Chief Executive Officer | 1 | $240.86M | -24% | May 1 |
| PS | Pershing Square Inc. | CEO & Chairman, Director, 10% Own… | 1 | $19.02M | +92% | May 4 |
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| Filed | Stock | Insider | Value | Shares | Price | Since buy | Stake | Trade | |
|---|---|---|---|---|---|---|---|---|---|
| May 4 | PSPershing Square Inc. | Ackman William A +1CEO & Chairman, Director, 10% Own… | $19.02M | 800,000 | $23.77 | +92% | +114% | Apr 30 | SEC |
| May 1 | PSUSPershing Square USA, Ltd. | Ackman William AChief Executive Officer | $240.86M | 4,897,171 | $49.18 | -24% | — | Apr 30 | SEC |