Leon O. Moulder Jr.

Companies

• Zenas BioPharma, Inc.Officer Jun 12, 2025 to now¹
• Zenas BioPharma, Inc.Board member Sep 12, 2024 to now²
• Zenas BioPharma, Inc.Chief executive officer Sep 12, 2024 to now²
• Zai Lab LimitedBoard member Jan 4, 2021 to now³
• Magenta TherapeuticsBoard member Sep 13, 2023 to May 28, 2024⁴
• Trevena IncBoard member Jan 30, 2014 to Jun 20, 2023⁵
• TesaroBoard member Jun 27, 2012 to Jan 22, 2019⁶
• TesaroChief executive officer Jun 27, 2012 to Jan 22, 2019⁶
• Cubist PharmaceuticalsBoard member Feb 22, 2010 to Jan 21, 2015⁷

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• MTMagenta Therapeutics DNTH1,436,745 shares⁸$107.4M at $74.77Jan 22, 2024
• ZBZenas BioPharma, Inc. ZBIO2,209,194 shares⁹$59.0M at $26.72May 18, 2026
• ZLZai Lab Limited ZLAB94,973 shares¹⁰$2.3M at $24.01Jun 17, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Jun 17, 2026Granted 22,371 shares of Zai Lab Limited¹⁰
• May 18, 2026Bought 60,000 shares at $16.88 of Zenas BioPharma, Inc.⁹
• Apr 29, 2026Bought 35,000 shares at $17.62 of Zenas BioPharma, Inc.¹¹
• Apr 28, 2026Bought 25,000 shares at $18.02 of Zenas BioPharma, Inc.¹¹
• Mar 31, 2026Bought 34,000 shares at $19.31 of Zenas BioPharma, Inc.¹²
• Mar 30, 2026Bought 20,000 shares at $18.23 of Zenas BioPharma, Inc.¹²
• Feb 2, 2026Bought 57,000 shares at $17.96 of Zenas BioPharma, Inc.¹³
• Jan 9, 2026Bought 20,000 shares at $16.55 of Zenas BioPharma, Inc.¹⁴
• Jan 8, 2026Bought 30,000 shares at $16.30 of Zenas BioPharma, Inc.¹⁴
• Jan 7, 2026Bought 50,000 shares at $16.38 of Zenas BioPharma, Inc.¹⁴
• Oct 7, 2025Bought 36,928 shares at $20.85 of Zenas BioPharma, Inc.¹⁵
• Jun 18, 2025Granted 10,831 shares of Zai Lab Limited¹⁶
• Feb 18, 2025Bought 25,000 shares at $6.67 of Zenas BioPharma, Inc.¹⁷
• Dec 4, 2024Bought 45,000 shares at $9.98 of Zenas BioPharma, Inc.¹⁸
• Dec 3, 2024Bought 25,000 shares at $10.76 of Zenas BioPharma, Inc.¹⁸
• Nov 19, 2024Bought 2,500 shares at $14.57 of Zenas BioPharma, Inc.¹⁹
• Nov 18, 2024Bought 7,500 shares at $15.00 of Zenas BioPharma, Inc.¹⁹
• Sep 20, 2024Bought 2,633 shares at $18.97 of Zenas BioPharma, Inc.²⁰
• Sep 20, 2024Bought 2,367 shares at $17.88 of Zenas BioPharma, Inc.²⁰
• Sep 19, 2024Bought 5,000 shares at $17.89 of Zenas BioPharma, Inc.²⁰
• Sep 18, 2024Bought 10,000 shares at $17.91 of Zenas BioPharma, Inc.²⁰
• Sep 16, 2024Converted 48,254 shares of Zenas BioPharma, Inc.²¹
• Sep 16, 2024Converted 48,254 shares of Zenas BioPharma, Inc.²²
• Sep 16, 2024Converted 372,017 shares of Zenas BioPharma, Inc.²¹
• Sep 16, 2024Converted 372,017 shares of Zenas BioPharma, Inc.²²