14 insiders reported 33 Form 4 transactions for Zenas BioPharma, Inc. (ZBIO) over the past 18 months (most recent 2026-06-17). Recent activity: Farmer Joseph L (See Remarks) Buy 974 shares, Fox Jennifer A. (See Remarks) Buy 1,592 shares, MOULDER LEON O JR (Chief Executive Officer) Buy 60,000 shares, Lu Hongbo (Director) Buy 3,768 shares, MOULDER LEON O JR (Chief Executive Officer) Buy 20,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-17 | Farmer Joseph L | See Remarks | Buy | 974 | $13,003 |
| 2026-06-17 | Fox Jennifer A. | See Remarks | Buy | 1,592 | $21,253 |
| 2026-05-18 | MOULDER LEON O JR | Chief Executive Officer | Buy | 60,000 | $1.0M |
| 2026-04-02 | Lu Hongbo | Director | Buy | 3,768 | $70,198 |
| 2026-03-31 | MOULDER LEON O JR | Chief Executive Officer | Buy | 20,000 | $364,600 |
| 2026-03-31 | MOULDER LEON O JR | Chief Executive Officer | Buy | 34,000 | $656,540 |
| 2026-03-31 | Lu Hongbo | Director | Buy | 75,000 | $1.5M |
| 2026-02-13 | Lu Hongbo | Director | Buy | 25,985 | $584,662 |
| 2026-02-13 | Allen Patricia L | Director | Buy | 5,000 | $118,850 |
| 2026-02-13 | Allen Patricia L | Director | Buy | 5,700 | $138,738 |
| 2026-02-13 | Allen Patricia L | Director | Buy | 5,000 | $132,500 |
| 2026-02-13 | Allen Patricia L | Director | Buy | 4,160 | $109,658 |
| 2026-02-03 | MOULDER LEON O JR | Chief Executive Officer | Buy | 57,000 | $1.0M |
| 2026-01-09 | MOULDER LEON O JR | Chief Executive Officer | Buy | 50,000 | $819,000 |
| 2026-01-09 | MOULDER LEON O JR | Chief Executive Officer | Buy | 30,000 | $489,000 |
| 2026-01-09 | MOULDER LEON O JR | Chief Executive Officer | Buy | 20,000 | $331,000 |
| 2025-10-14 | ENRIGHT PATRICK G | Director | Buy | 105,265 | $2.0M |
| 2025-10-14 | ENRIGHT PATRICK G | Director | Buy | 11,990 | $249,992 |
| 2025-10-14 | George Simeon | Insider | Buy | 63,158 | $1.2M |
| 2025-10-14 | SR ONE CAPITAL MANAGEMENT, LLC | Insider | Buy | 63,158 | $1.2M |
| 2025-10-14 | George Simeon | Insider | Buy | 63,157 | $1.2M |
| 2025-10-14 | SR ONE CAPITAL MANAGEMENT, LLC | Insider | Buy | 63,157 | $1.2M |
| 2025-10-14 | Nunn Jason Raleigh | Director | Buy | 63,158 | $1.2M |
| 2025-10-09 | Harwin Peter Evan | Director | Buy | 316,219 | $6.0M |
| 2025-10-09 | Fairmount Healthcare Fund II L.P. | Director | Buy | 316,219 | $6.0M |
Source: SEC Form 4 filings · as of 2026-06-17