Zenas BioPharma, Inc. (ZBIO) Insider Ownership

Historic Insider Ownership Trends

As of March 23, 2026, Zenas BioPharma's top three insider holders are Sciences Gp, Llc Enavate (TenPercentOwner, 3.76Mn shares), Funds Management Llc Fairmount (Director, 2.21Mn shares), One Capital Management, Llc Sr (TenPercentOwner, 1.92Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Sciences Gp, Llc Enavate 0 3,761,359 18 Sep, 2024
Funds Management Llc Fairmount 0 2,209,025 09 Oct, 2025
One Capital Management, Llc Sr 0 1,917,895 14 Oct, 2025
Biomedical Innovation Master Investors (Cayman) I L.P. Wellington 801,624 0 18 Sep, 2024
Hongbo Lu 0 347,968 13 Feb, 2026
Ting Xiao 47,000 0 11 Feb, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
11 Feb, 2026 Hongbo Lu Common Stock A 25,985 $22.50 347,968 I P
09 Oct, 2025 One Capital Management, Llc Sr Common Stock A 63,158 $19.00 1,173,395 I P
09 Oct, 2025 One Capital Management, Llc Sr Common Stock A 63,157 $19.00 1,917,895 I P
07 Oct, 2025 Funds Management Llc Fairmount Common Stock A 316,219 $19.00 2,209,025 I P
10 Jun, 2025 James P Boylan Stock Option (Right to Buy) A 18,500 $0.00 18,500 D A
10 Jun, 2025 Jennifer A. Fox Stock Option (Right to Buy) A 150,000 $0.00 150,000 D A
10 Jun, 2025 Hongbo Lu Stock Option (Right to Buy) A 18,500 $0.00 18,500 D A
10 Jun, 2025 Orlando Oliveira Stock Option (Right to Buy) A 100,000 $0.00 100,000 D A
10 Jun, 2025 John J Orloff Stock Option (Right to Buy) A 18,500 $0.00 18,500 D A
10 Jun, 2025 Funds Management Llc Fairmount Stock Option (Right to Buy) A 18,500 $0.00 18,500 I A
15 Apr, 2025 Moltke Lisa Von Stock Option (Right to Buy) A 400,000 $0.00 400,000 D A
07 Feb, 2025 Ting Xiao Common Stock A 10,000 $7.76 47,000 D P
16 Dec, 2024 Orlando Oliveira Stock Option (Right to Buy) A 7,775 $0.00 7,775 D A
16 Dec, 2024 Jennifer A. Fox Stock Option (Right to Buy) A 8,125 $0.00 8,125 D A
16 Sep, 2024 Biomedical Innovation Master Investors (Cayman) I L.P. Wellington Common Stock A 180,635 - 180,635 D C
16 Sep, 2024 Sciences Gp, Llc Enavate Common Stock A 2,879,006 - 2,879,006 I C
16 Sep, 2024 Biomedical Innovation Master Investors (Cayman) I L.P. Wellington Common Stock A 420,271 - 600,906 D C
16 Sep, 2024 Sciences Gp, Llc Enavate Common Stock A 882,353 $17.00 3,761,359 I P
16 Sep, 2024 Sciences Gp, Llc Enavate Series B Preferred Stock D 10,474,889 - 0 I C
16 Sep, 2024 Biomedical Innovation Master Investors (Cayman) I L.P. Wellington Common Stock A 200,718 - 801,624 D C