Moulder Leon O Jr: insider buys

Every open-market stock purchase reported by Moulder Leon O Jr to the SEC on Form 4.

Total bought$6.53M

Purchases6

Companies1

Last purchase filedMay 18, 2026

Return on these buys+60%

Moulder Leon O Jr has made 6 open-market purchases worth $6.53M in 1 company since Oct 9, 2025, according to SEC Form 4 filings. The most recent was filed on May 18, 2026: 60,000 shares of ZBIO at $16.88 (Chief Executive Officer, Director), worth $1.01M. The largest was $1.64M of ZBIO on Jan 7, 2026. Taken together, these purchases are up 60% at the latest closing prices (split-adjusted, weighted by amount).

Companies Moulder Leon O Jr bought

Ticker	Company	Role	Buys	Total	Since buy	Last filed
ZBIO	Zenas BioPharma, Inc.	Chief Executive Officer, Director	6	$6.53M	+60%	May 18

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All purchases

Filed	Stock	Insider	Value	Shares	Price	Since buy	Stake	Trade
May 18	ZBIOZenas BioPharma, Inc.	Moulder Leon O JrChief Executive Officer, Director	$1.01M	60,000	$16.88	+68%	+162%	May 18	SEC
Apr 29	ZBIOZenas BioPharma, Inc.	Moulder Leon O JrChief Executive Officer, Director	$1.07M	60,000	$17.79	+60%	+4%	Apr 28	SEC
Mar 31	ZBIOZenas BioPharma, Inc.	Moulder Leon O JrChief Executive Officer, Director	$1.02M	54,000	$18.91	+50%	+3%	Mar 30	SEC
Feb 3	ZBIOZenas BioPharma, Inc.	Moulder Leon O JrChief Executive Officer, Director	$1.02M	57,000	$17.96	+58%	+16%	Feb 2	SEC
Jan 9	ZBIOZenas BioPharma, Inc.	Moulder Leon O JrChief Executive Officer, Director	$1.64M	100,000	$16.39	+73%	+41%	Jan 7	SEC
Oct 9	ZBIOZenas BioPharma, Inc.	Moulder Leon O JrSee Remarks, Director	$769.95K	36,928	$20.85	+36%	new	Oct 7	SEC