SEC Form 4 reporting owner

Moulder Leon O Jr

Moulder Leon O Jr has filed 11 Form 4 transactions reported between January 7, 2026 and June 17, 2026, as a reporting owner of Zai Lab Ltd and Chief Executive Officer of Zenas BioPharma, Inc..

Name as filed: MOULDER LEON O JR

Open-market buys, 24 mo

$5.8M

9 lines

Open-market sales, 24 mo

None

reported

Companies

with Form 4 filings

Latest transaction

Jun 17, 2026

transaction date

Roles and reported holdings

ZLABZai Lab Ltd
Jun 17, 2026
Reporting owner
No common-stock holding reported on a purchase, sale, gift or withholding line.
ZBIOZenas BioPharma, Inc.
Jan 7, 2026 – Jun 15, 2026
Chief Executive Officer
Held directly423,155 sh as of Feb 2, 2026 · Form 4
Held indirectly (latest line)96,928 sh as of May 18, 2026 · Form 4
24 months: $5.8M bought

Transaction history

All 11 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Jun 17, 2026	ZLAB	Grant or awardCode A · direct	22,371	—	—	94,973	Form 4
Jun 15, 2026	ZBIO	Grant or awardCode A · direct	500,000	—	—	500,000	Form 4
May 18, 2026	ZBIOChief Executive Officer	Open-market purchaseCode P · indirect	60,000	$16.88	$1.0M@ $16.88	96,928	Form 4
Apr 29, 2026	ZBIOChief Executive Officer	Open-market purchaseCode P · indirect	35,000	$17.62	$617K@ $17.62	1,786,039	Form 4
Apr 28, 2026	ZBIOChief Executive Officer	Open-market purchaseCode P · indirect	25,000	$18.02	$451K@ $18.02	1,751,039	Form 4
Mar 31, 2026	ZBIOChief Executive Officer	Open-market purchaseCode P · indirect	34,000	$19.31	$657K@ $19.31	1,726,039	Form 4
Mar 30, 2026	ZBIOChief Executive Officer	Open-market purchaseCode P · indirect	20,000	$18.23	$365K@ $18.23	1,692,039	Form 4
Feb 2, 2026	ZBIOChief Executive Officer	Open-market purchaseCode P · direct	57,000	$17.96	$1.0M@ $17.96	423,155	Form 4
Jan 9, 2026	ZBIOChief Executive Officer	Open-market purchaseCode P · direct	20,000	$16.55	$331K@ $16.55	366,155	Form 4
Jan 8, 2026	ZBIOChief Executive Officer	Open-market purchaseCode P · direct	30,000	$16.30	$489K@ $16.30	346,155	Form 4
Jan 7, 2026	ZBIOChief Executive Officer	Open-market purchaseCode P · direct	50,000	$16.38	$819K@ $16.38	316,155	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.