Time on boards
- Boards served
- 3
- Current seats
- 3
- Board service
- 5 years
- Director since
- 2024
5 years of board service in total across 3 boards, counting each seat separately. Longest: Howard Hughes Holdings Inc., 2 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Howard Hughes Holdings Inc. September 30, 202699.3%
-
Howard Hughes Holdings Inc. September 30, 202596.0%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 17, 2026 | Pershing Square Inc. | Gift | −10,000,000 | — | — |
| Apr 30, 2026 | Pershing Square Inc. | Other | +700,000 | — | — |
| Apr 30, 2026 | Pershing Square USA Ltd. | Open-market purchase | +3,500,000 | $50.00 | $175,000,000 |
| Apr 30, 2026 | Pershing Square Inc. | Open-market purchase | +81,762 | $22.61 | $1,848,639 |
| Apr 30, 2026 | Pershing Square USA Ltd. | Open-market purchase | +500,000 | $42.00 | $21,000,000 |
| Apr 30, 2026 | Pershing Square Inc. | Open-market purchase | +659,540 | $23.88 | $15,749,815 |
| Apr 30, 2026 | Pershing Square USA Ltd. | Open-market purchase | +841,000 | $50.00 | $42,050,000 |
| Apr 30, 2026 | Pershing Square Inc. | Open-market purchase | +58,698 | $24.20 | $1,420,492 |
| Apr 30, 2026 | Pershing Square USA Ltd. | Open-market purchase | +21,200 | $50.00 | $1,060,000 |
| Apr 30, 2026 | Pershing Square Inc. | Other | +168,200 | — | — |
| Apr 30, 2026 | Pershing Square USA Ltd. | Open-market purchase | +34,971 | $50.00 | $1,748,550 |
| Apr 30, 2026 | Pershing Square Inc. | Other | +4,240 | — | — |
| Apr 30, 2026 | Pershing Square Inc. | Grant or award | +10,489 | — | — |
| Apr 30, 2026 | Pershing Square Inc. | Sold back to the company | −6,874,237 | — | — |
| Apr 28, 2026 | Pershing Square Inc. | Gift | −300,000 | — | — |
Questions about William A. Ackman
What boards is William A. Ackman on?
William A. Ackman sits on the boards of Howard Hughes Holdings Inc., Pershing Square Inc. and Seaport Entertainment Group Inc.
What company is William A. Ackman the CEO of?
William A. Ackman has been CEO & Chairman of Pershing Square Inc. since April 2026.
How long has William A. Ackman served on boards?
Our records show at least 5 years of board service across 3 boards, the earliest from 2024.
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