Zenas BioPharma, Inc. (ZBIO)

Latest Insider Confidence Score

2026Q1

68.1
Bullish

Company insider confidence (by quarter)

2024Q3 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
InnoCare Pharma Inc. — 5,000,000 Oct 15, 2025
Kiselak Tomas Director 2,209,025 Oct 9, 2025
Fairmount Funds Management LLC Director 2,209,025 Oct 9, 2025
Fairmount Healthcare Fund II L.P. Director 2,209,025 Oct 9, 2025
Harwin Peter Evan Director 2,209,025 Oct 9, 2025

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 11, 2026 Feb 13, 2026 Lu Hongbo Director Buy 92.5 +25,985 8.07% ✗ $584.7K
Feb 12, 2026 Feb 13, 2026 Allen Patricia L Director Buy 97.5 +19,860 100.00% ✗ $499.7K
Feb 2, 2026 Feb 3, 2026 MOULDER LEON O JR CEO Buy 92.5 +57,000 2.75% ✗ $1M
Jan 7, 2026 Jan 9, 2026 MOULDER LEON O JR CEO Buy 95.0 +100,000 5.06% ✗ $1.6M
Oct 15, 2025 InnoCare Pharma Inc. 10% Owner Neutral 52.5 - 0.00% ✗ -
Oct 9, 2025 Oct 14, 2025 Nunn Jason Raleigh Director Buy 87.5 +63,158 2.07% ✗ $1.2M
Oct 9, 2025 Oct 14, 2025 SR ONE CAPITAL MANAGEMENT, LLC 10% Owner Buy 92.5 +126,315 2.57% ✗ $2.4M
Oct 9, 2025 Oct 14, 2025 ENRIGHT PATRICK G Director Buy 95.0 +117,255 6.79% ✗ $2.3M
Oct 7, 2025 Oct 9, 2025 MOULDER LEON O JR Officer Buy 97.5 +36,928 13.87% ✗ $769.9K
Oct 7, 2025 Oct 9, 2025 Fairmount Funds Management LLC Director Buy 100.0 +316,219 16.71% ✗ $6M
Sep 13, 2024 Oct 9, 2025 Lu Hongbo Director Buy 100.0 +321,983 100.00% ✗ $6M
Jun 10, 2025 Jun 12, 2025 Nunn Jason Raleigh Director Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 Fox Jennifer A. Officer Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 Oliveira Orlando Officer Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 Boylan James P Director Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 Allen Patricia L Director Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 Farmer Joseph L Officer Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 Fairmount Funds Management LLC Director Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 ENRIGHT PATRICK G Director Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 ORLOFF JOHN J Director Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 Lu Hongbo Director Neutral 52.5 - 0.00% ✗ -
Jun 10, 2025 Jun 12, 2025 MOULDER LEON O JR Officer Neutral 52.5 - 0.00% ✗ -
Feb 7, 2025 Apr 28, 2025 Xiao Ting Director Buy 95.0 +10,000 100.00% ✗ $77.6K
Apr 15, 2025 Apr 17, 2025 von Moltke Lisa Officer Neutral 52.5 - 0.00% ✗ -
Mar 21, 2025 von Moltke Lisa Officer Neutral 52.5 - 0.00% ✗ -
Feb 18, 2025 Feb 19, 2025 MOULDER LEON O JR CEO Buy 82.5 +25,000 1.31% ✗ $166.8K
Feb 7, 2025 Feb 11, 2025 Xiao Ting Director Buy 95.0 +10,000 27.03% ✗ $77.6K
Dec 16, 2024 Dec 18, 2024 Fox Jennifer A. Officer Neutral 52.5 - 0.00% ✗ -
Dec 16, 2024 Dec 18, 2024 Oliveira Orlando Chief Commercial Officer Neutral 52.5 - 0.00% ✗ -
Dec 3, 2024 Dec 4, 2024 MOULDER LEON O JR CEO Buy 90.0 +70,000 3.80% ✗ $718.1K
Nov 18, 2024 Nov 20, 2024 MOULDER LEON O JR CEO Buy 72.5 +10,000 0.55% ✗ $148.9K
Sep 18, 2024 Sep 20, 2024 MOULDER LEON O JR CEO Buy 85.0 +20,000 1.10% ✗ $360.8K
Sep 16, 2024 Sep 18, 2024 Wellington Biomedical Innovation Master Investors (Cayman) I L.P. 10% Owner Neutral 52.5 - 0.00% ✗ -
Sep 16, 2024 Sep 18, 2024 Enavate Sciences GP, LLC 10% Owner Buy 100.0 +882,353 30.65% ✗ $15M
Sep 16, 2024 Sep 17, 2024 Fairmount Funds Management LLC Director Buy 100.0 +300,000 18.83% ✗ $5.1M
Sep 16, 2024 Sep 17, 2024 MOULDER LEON O JR CEO Neutral 52.5 - 0.00% ✗ -
Sep 13, 2024 Sep 17, 2024 Lu Hongbo Director Buy 97.5 +58,823 100.00% ✗ $1000K
Sep 12, 2024 Sep 16, 2024 ORLOFF JOHN J Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Sep 16, 2024 Xiao Ting Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Sep 16, 2024 Lu Hongbo Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Sep 16, 2024 Allen Patricia L Director Neutral 52.5 - 0.00% ✗ -
Sep 16, 2024 Sep 16, 2024 ENRIGHT PATRICK G Director Buy 100.0 +440,000 131.53% ✗ $7.5M
Sep 12, 2024 Sep 16, 2024 Boylan James P Director Neutral 52.5 - 0.00% ✗ -
Sep 16, 2024 Sep 16, 2024 Nunn Jason Raleigh Director Buy 100.0 +882,352 40.58% ✗ $15M
Sep 16, 2024 Sep 16, 2024 Fairmount Funds Management LLC Director Buy 100.0 +300,000 22.99% ✗ $5.1M
Sep 12, 2024 Sep 16, 2024 Oliveira Orlando Chief Commercial Officer Neutral 52.5 - 0.00% ✗ -
Sep 16, 2024 Sep 16, 2024 SR ONE CAPITAL MANAGEMENT, LLC 10% Owner Buy 100.0 +2,235,294 83.52% ✗ $38M
Sep 12, 2024 Sep 16, 2024 Farmer Joseph L Officer Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Sep 16, 2024 Fox Jennifer A. Officer Neutral 52.5 - 0.00% ✗ -
Sep 16, 2024 Sep 16, 2024 MOULDER LEON O JR CEO Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Wellington Biomedical Innovation Master Investors (Cayman) I L.P. 10% Owner Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Xiao Ting Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 ORLOFF JOHN J Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Lu Hongbo Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 ENRIGHT PATRICK G Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Fairmount Funds Management LLC Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Nunn Jason Raleigh Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 SR ONE CAPITAL MANAGEMENT, LLC 10% Owner Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Enavate Sciences GP, LLC 10% Owner Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Boylan James P Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Allen Patricia L Director Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Oliveira Orlando Chief Commercial Officer Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Farmer Joseph L Officer Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 Fox Jennifer A. Officer Neutral 52.5 - 0.00% ✗ -
Sep 12, 2024 MOULDER LEON O JR CEO Neutral 52.5 - 0.00% ✗ -