ZBIO insider transaction filings
Zenas BioPharma, Inc. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-02. Screen ZBIO transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 1 Form 4 filing. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 1.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Oliger Christy J. — Director | 1 | — | — | 1 |
Recent Form 4 filings — Zenas BioPharma, Inc.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-02 | 4 | Oliger Christy J. — Director | Grant/award (A): 37,000 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Boylan James P — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Fox Jennifer A. — See Remarks | Grant/award (A): 1,592 @ $13.35 · Grant/award (A): 125,000 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | von Moltke Lisa — See Remarks | Grant/award (A): 150,000 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Lu Hongbo — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | ORLOFF JOHN J — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Nunn Jason Raleigh — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Allen Patricia L — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | Farmer Joseph L — See Remarks | Grant/award (A): 974 @ $13.35 · Grant/award (A): 175,000 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | ENRIGHT PATRICK G — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2026-06-17 | 4 | MOULDER LEON O JR — See Remarks, Director | Grant/award (A): 500,000 (derivative) @ $0 | EDGAR |
| 2026-05-18 | 4 | MOULDER LEON O JR — Chief Executive Officer, Director | Purchase (P): 60,000 @ $16.88 | EDGAR |
| 2026-04-29 | 4 | MOULDER LEON O JR — Chief Executive Officer, Director | Purchase (P): 25,000 @ $18.02 · Purchase (P): 35,000 @ $17.62 | EDGAR |
| 2026-04-02 | 4 | Lu Hongbo — Director | Purchase (P): 3,768 @ $18.63 | EDGAR |
| 2026-04-01 | 4 | Fairmount Funds Management LLC — Director Fairmount Healthcare Fund II L.P. — Director Kiselak Tomas — Director Harwin Peter Evan — Director | Purchase (P): 150,000 @ $20 | EDGAR |
| 2026-03-31 | 4 | Lu Hongbo — Director | Purchase (P): 75,000 @ $20 | EDGAR |
| 2026-03-31 | 4 | MOULDER LEON O JR — Chief Executive Officer, Director | Purchase (P): 20,000 @ $18.23 · Purchase (P): 34,000 @ $19.31 | EDGAR |
| 2026-02-13 | 4 | Lu Hongbo — Director | Purchase (P): 25,985 @ $22.50 | EDGAR |
| 2026-02-13 | 4 | Allen Patricia L — Director | Purchase (P): 5,000 @ $23.77 · Purchase (P): 5,700 @ $24.34 · Purchase (P): 5,000 @ $26.50 · Purchase (P): 4,160 @ $26.36 | EDGAR |
| 2026-02-03 | 4 | MOULDER LEON O JR — Chief Executive Officer, Director | Purchase (P): 57,000 @ $17.96 | EDGAR |
| 2026-01-09 | 4 | MOULDER LEON O JR — Chief Executive Officer, Director | Purchase (P): 50,000 @ $16.38 · Purchase (P): 30,000 @ $16.30 · Purchase (P): 20,000 @ $16.55 | EDGAR |
| 2025-10-14 | 4 | SR ONE CAPITAL MANAGEMENT, LLC — 10% owner George Simeon — 10% owner | Purchase (P): 63,158 @ $19 · Purchase (P): 63,157 @ $19 | EDGAR |
| 2025-10-14 | 4 | Nunn Jason Raleigh — Director | Purchase (P): 63,158 @ $19 | EDGAR |
| 2025-10-14 | 4 | ENRIGHT PATRICK G — Director | Purchase (P): 105,265 @ $19 · Purchase (P): 11,990 @ $20.85 | EDGAR |
| 2025-10-09 | 4 | Lu Hongbo — Director | Purchase (P): 58,823 @ $17 · Purchase (P): 263,160 @ $19 | EDGAR |
| 2025-10-09 | 4 | Fairmount Funds Management LLC — Director Fairmount Healthcare Fund II L.P. — Director Kiselak Tomas — Director Harwin Peter Evan — Director | Purchase (P): 316,219 @ $19 | EDGAR |
| 2025-10-09 | 4 | MOULDER LEON O JR — See Remarks, Director | Purchase (P): 36,928 @ $20.85 | EDGAR |
| 2025-06-12 | 4 | Boylan James P — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | Fox Jennifer A. — See Remarks | Grant/award (A): 150,000 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | Lu Hongbo — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | Oliveira Orlando — See Remarks | Grant/award (A): 100,000 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | Fairmount Funds Management LLC — Director Fairmount Healthcare Fund II L.P. — Director Kiselak Tomas — Director Harwin Peter Evan — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | ORLOFF JOHN J — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | Nunn Jason Raleigh — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | Allen Patricia L — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | Farmer Joseph L — See Remarks | Grant/award (A): 175,000 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | ENRIGHT PATRICK G — Director | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | MOULDER LEON O JR — See Remarks, Director | Grant/award (A): 400,000 (derivative) @ $0 | EDGAR |
| 2025-04-28 | 4/A | Xiao Ting — Director | Purchase (P): 10,000 @ $7.76 | EDGAR |
| 2025-04-17 | 4 | von Moltke Lisa — See Remarks | Grant/award (A): 400,000 (derivative) @ $0 | EDGAR |
| 2025-02-19 | 4 | MOULDER LEON O JR — Chief Executive Officer, Director | Purchase (P): 25,000 @ $6.67 | EDGAR |
| 2025-02-11 | 4 | Xiao Ting — Director | Purchase (P): 10,000 @ $7.76 | EDGAR |
| 2024-12-18 | 4 | Fox Jennifer A. — See Remarks | Grant/award (A): 8,125 (derivative) @ $0 | EDGAR |
| 2024-12-18 | 4 | Oliveira Orlando — Chief Commercial Officer | Grant/award (A): 7,775 (derivative) @ $0 | EDGAR |
| 2024-12-04 | 4 | MOULDER LEON O JR — Chief Executive Officer, Director | Purchase (P): 25,000 @ $10.76 · Purchase (P): 45,000 @ $9.98 | EDGAR |
| 2024-11-20 | 4 | MOULDER LEON O JR — Chief Executive Officer, Director | Purchase (P): 7,500 @ $15 · Purchase (P): 2,500 @ $14.57 | EDGAR |
| 2024-09-20 | 4 | MOULDER LEON O JR — Chief Executive Officer, Director | Purchase (P): 10,000 @ $17.91 · Purchase (P): 5,000 @ $17.89 · Purchase (P): 2,367 @ $17.88 · Purchase (P): 2,633 @ $18.97 | EDGAR |
| 2024-09-18 | 4 | Enavate Sciences GP, LLC — 10% owner Zebra Aggregator, LP — 10% owner | Conversion (C): 2,879,006 · Purchase (P): 882,353 @ $17 · Conversion (C): 10,474,889 (derivative) · Conversion (C): 14,523,821 (derivative) | EDGAR |
| 2024-09-18 | 4 | Wellington Biomedical Innovation Master Investors (Cayman) I L.P. — 10% owner | Conversion (C): 180,635 · Conversion (C): 420,271 · Conversion (C): 200,718 · Conversion (C): 1,568,480 (derivative) · Conversion (C): 3,649,263 (derivative) · Conversion (C): 1,742,858 (derivative) | EDGAR |
| 2024-09-17 | 4/A | MOULDER LEON O JR — Chief Executive Officer, Director | Conversion (C): 164,523 · Conversion (C): 108,381 · Conversion (C): 372,017 · Conversion (C): 48,254 · Conversion (C): 1,428,571 (derivative) · Conversion (C): 941,088 (derivative) · +3 more | EDGAR |
Recent 8-K events — Zenas BioPharma, Inc.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-13 | 8-K | 2.02 — Results of Operations and Financial Condition 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-13 | 8-K | 2.02 — Results of Operations and Financial Condition 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.07 — Submission of Matters to a Vote of Security Holders 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-31 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-16 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-13 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-05 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-12-15 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-12 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-10-27 | 8-K | 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-10-08 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.02 — Results of Operations and Financial Condition 3.02 — Unregistered Sales of Equity Securities 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
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