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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.

Overview All Filings Annual Quarterly Insiders
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