Zenas BioPharma, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Nunn Jason Raleigh | — | Purchase | 63,158 | $19.00 | $1,200,002 | 1,173,395 | Oct 9, 2025 |
| SR ONE CAPITAL MANAGEMENT, LLC | — | Purchase | 63,158 | $19.00 | $1,200,002 | 1,173,395 | Oct 9, 2025 |
| ENRIGHT PATRICK G | — | Purchase | 11,990 | $20.85 | $249,992 | 11,990 | Oct 9, 2025 |
| MOULDER LEON O JR | See Remarks | Purchase | 36,928 | $20.85 | $769,949 | 36,928 | Oct 7, 2025 |
| Harwin Peter Evan | — | Purchase | 316,219 | $19.00 | $6,008,161 | 2,209,025 | Oct 7, 2025 |
| MOULDER LEON O JR | Chief Executive Officer | Purchase | 25,000 | $6.67 | $166,750 | 266,155 | Feb 18, 2025 |
| Xiao Ting | — | Purchase | 10,000 | $7.76 | $77,600 | 10,000 | Feb 7, 2025 |
| Xiao Ting | — | Purchase | 10,000 | $7.76 | $77,600 | 47,000 | Feb 7, 2025 |
| MOULDER LEON O JR | Chief Executive Officer | Purchase | 25,000 | $10.76 | $269,000 | 196,155 | Dec 4, 2024 |
| MOULDER LEON O JR | Chief Executive Officer | Purchase | 2,500 | $14.57 | $36,425 | 171,155 | Nov 18, 2024 |
| MOULDER LEON O JR | Chief Executive Officer | Purchase | 5,000 | $17.89 | $89,450 | 1,667,039 | Sep 18, 2024 |
| Wellington Biomedical Innovation Master Investors (Cayman) I L.P. | — | C | 200,718 | — | — | 801,624 | Sep 16, 2024 |
| Zebra Aggregator, LP | — | Purchase | 882,353 | $17.00 | $15,000,001 | 3,761,359 | Sep 16, 2024 |
| Fairmount Funds Management LLC | — | Purchase | 300,000 | $17.00 | $5,100,000 | 1,892,806 | Sep 16, 2024 |
| MOULDER LEON O JR | Chief Executive Officer | C | 372,017 | — | — | 1,652,039 | Sep 16, 2024 |
| ENRIGHT PATRICK G | — | C | 1,003,592 | — | — | 1,727,404 | Sep 16, 2024 |
| Nunn Jason Raleigh | — | Purchase | 441,176 | $17.00 | $7,499,992 | 1,110,237 | Sep 16, 2024 |
| Harwin Peter Evan | — | C | 41,130 | — | — | 41,140 | Sep 16, 2024 |
| SR ONE CAPITAL MANAGEMENT, LLC | — | Purchase | 441,176 | $17.00 | $7,499,992 | 1,946,564 | Sep 16, 2024 |
| MOULDER LEON O JR | Chief Executive Officer | C | 164,523 | — | — | 164,523 | Sep 16, 2024 |
| Lu Hongbo | — | Purchase | 263,160 | $19.00 | $5,000,040 | 321,983 | Sep 13, 2024 |
| Lu Hongbo | — | Purchase | 58,823 | $17.00 | $999,991 | 58,823 | Sep 13, 2024 |