Insider Profile · SEC Form 4 Activity · Trailing 90 Days

Moulder Leon O Jr

Over the trailing 90 days, Moulder Leon O Jr (Director at Zenas BioPharma, Inc.) bought $1.0M of stock across 2 companies, per 3 SEC Form 4 transactions.

Role: Director
Companies: ZBIO ZLAB
Window: Trailing 90 days · 3 transactions · CIK 1228865
Net activity: +$1.0M ($1.0M bought · $0 sold)
Source: Official filings on sec.gov ↗

By Company (Trailing 90 Days)

Symbol	Company	Txns	Bought	Sold	Net
ZBIO	Zenas BioPharma, Inc.	2	$1.0M	—	$1.0M
ZLAB	Zai Lab Ltd	1	—	—	$0

Transactions (3)

Date	Symbol	Type	Shares	Value	Description
2026-06-17	ZLAB	Buy	22.4K	$0	Grant, award or other acquisition
2026-06-15	ZBIO	Buy	500.0K	$0	Grant, award or other acquisition
2026-05-18	ZBIO	Buy	60.0K	$1.0M	Open market or private purchase

Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.

Follow Moulder's next move

Real-time Form 4 alerts, insider track records, and cluster detection — matched to your watchlist.

Start free