ACKMAN WILLIAM A (CIK 1056513) reported 23 SEC Form 4 insider transactions across 5 companies over the past 18 months (most recent 2026-08-19). Recent activity: Sell PS (10.0M shares), Buy HHH (140,000 shares), Buy PS (700,000 shares), Buy PS (81,762 shares), Buy PS (659,540 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-19 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Sell | 10.0M | $0 |
| 2026-06-08 | Howard Hughes Holdings Inc. (HHH) | Director | Buy | 140,000 | $0 |
| 2026-05-04 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Buy | 700,000 | $0 |
| 2026-05-04 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Buy | 81,762 | $1.8M |
| 2026-05-04 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Buy | 659,540 | $15.7M |
| 2026-05-04 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Buy | 58,698 | $1.4M |
| 2026-05-04 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Buy | 168,200 | $0 |
| 2026-05-04 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Buy | 4,240 | $0 |
| 2026-05-04 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Buy | 10,489 | $0 |
| 2026-05-04 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Sell | 300,000 | $0 |
| 2026-05-04 | PERSHING SQUARE INC. (PS) | CEO & Chairman | Sell | 6.9M | $0 |
| 2026-05-01 | Pershing Square USA, Ltd. (PSUS) | Chief Executive Officer | Buy | 3.5M | $175.0M |
| 2026-05-01 | Pershing Square USA, Ltd. (PSUS) | Chief Executive Officer | Buy | 500,000 | $21.0M |
| 2026-05-01 | Pershing Square USA, Ltd. (PSUS) | Chief Executive Officer | Buy | 841,000 | $42.0M |
| 2026-05-01 | Pershing Square USA, Ltd. (PSUS) | Chief Executive Officer | Buy | 21,200 | $1.1M |
| 2026-05-01 | Pershing Square USA, Ltd. (PSUS) | Chief Executive Officer | Buy | 34,971 | $1.7M |
| 2026-04-23 | Howard Hughes Holdings Inc. (HHH) | Director | Sell | 341,033 | $22.5M |
| 2026-04-23 | Pershing Square SPARC Holdings, Ltd./DE (N/A) | Chief Executive Officer | Sell | 0 | $0 |
| 2026-04-23 | Seaport Entertainment Group Inc. (SEG) | Director | Sell | 90,875 | $2.0M |
| 2026-04-23 | Howard Hughes Holdings Inc. (HHH) | Director | Buy | 341,033 | $22.5M |
| 2026-04-23 | Seaport Entertainment Group Inc. (SEG) | Director | Buy | 90,875 | $2.0M |
| 2025-05-07 | Howard Hughes Holdings Inc. (HHH) | Director | Buy | 9.0M | $900.0M |
| 2025-05-07 | Howard Hughes Holdings Inc. (HHH) | Director | Buy | 59.4M | $0 |
Source: SEC Form 4 filings · as of 2026-08-19