ZBIO- Zenas Biopharma, Inc.

Name: Zenas Biopharma, Inc. Insider Trading Data
Creator: U.S. Securities and Exchange Commission
License: https://www.sec.gov/privacy#accessibility

ZBIO sits in the Biotechnology industry within the Health Care sector, so this activity is best read against the sector's broader insider trend.

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Insider Ownership

Role	Insider	Shares	Value	30d
Dir	Fairmount Funds Management LLC	2.36M	$47.18M	-
Other	Moulder Leon O Jr	500.0K	-	-
Other	Farmer Joseph L	175.0K	-	-
Other	Von Moltke Lisa	150.0K	-	-
Other	Fox Jennifer A.	125.0K	-	-

Activity

Buys and sells only

Transactions

10 filings

Date	Insider	Role	Type	Shares	Price	Value	Chg%	3M	12M
May 18, 2026	Moulder Leon O Jr83	Chief Executive Officer	Buy	60,000	$16.88	$1,012,800.00	+162.5%	-	-
Apr 29, 2026	Moulder Leon O Jr83	Chief Executive Officer	Buy	60,000	$17.79	$1,067,200.00	+3.5%	+84.0%	-
Mar 31, 2026	Lu Hongbo59	Director	Buy	75,000	$20.00	$1,500,000.00	+21.6%	+32.3%	-
Mar 31, 2026	Lu Hongbo59	Director	Buy	3,768	$18.63	$70,197.84	+0.9%	+32.3%	-
Mar 31, 2026	Fairmount Funds Management LLC74	Director	Buy	150,000	$20.00	$3,000,000.00	+6.8%	+32.3%	-
Mar 31, 2026	Moulder Leon O Jr83	Chief Executive Officer	Buy	54,000	$18.91	$1,021,140.00	+3.2%	+32.3%	-
Feb 13, 2026	Allen Patricia L	Director	Buy	19,860	$25.16	$499,745.60	New	-	-
Feb 11, 2026	Lu Hongbo59	Director	Buy	25,985	$22.50	$584,662.50	+8.1%	-	-
Feb 2, 2026	Moulder Leon O Jr83	Chief Executive Officer	Buy	57,000	$17.96	$1,023,720.00	+15.6%	-	-
Jan 9, 2026	Moulder Leon O Jr83	Chief Executive Officer	Buy	100,000	$16.39	$1,639,000.00	+37.6%	+32.3%	-

Understand these filings

How to Read SEC Form 4 Filings →Understanding Insider Buying Signals →What is Insider Trading? A Complete Guide →Cluster Buying: When Multiple Insiders Buy Together →

Insider	Role	Shares	Value	Buys	Sells

Date	Ticker	Insider	Role	Type	Shares	Price	Value	Chg%	SEC