Who
Leon O. Moulder Jr.
Director
Company insider
Files Form 4 as: Director, Zai Lab; Chief Executive Officer, Zenas BioPharma; Director, Dianthus Therapeutics; Director, Trevena; Chief Executive Officer, Tesaro; Director, Cubist Pharmaceuticals; President & CEO, Abraxis BioScience; President & CEO, Mgi Pharma.
In numbers
- Trades disclosed
- 163
- Buys
- 25
- Sells
- 0
- Bought
- $14.6M
- Sold
- $0
- Companies
- 8
- Companies where not an officer
- 4
- First trade
- 15 Jul 2006
- Last trade
- 17 Jun 2026
- Last filed
- 22 Jun 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 17 Jun 2026filed 22 Jun 2026 | ZLAB Zai LabBiotechnology | SEC FORM 4 Code A | —22,371 at $0.00 | filing |
| 17 Jun 2026filed 22 Jun 2026 | ZLAB Zai LabBiotechnology | SEC FORM 4 Code A | —22,371 at $0.00 | filing |
| 15 Jun 2026filed 17 Jun 2026 | ZBIO Zenas BioPharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —500,000 at $0.00 | filing |
| 15 Jun 2026filed 17 Jun 2026 | ZBIO Zenas BioPharmaoption or derivative · Biotechnology | SEC FORM 4 Code A | —500,000 at $0.00 | filing |
| 18 May 2026filed 18 May 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $1.0M60,000 at $16.88 | filing |
| 18 May 2026filed 18 May 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $1.0M60,000 at $16.88 | filing |
| 29 Apr 2026filed 29 Apr 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $617K35,000 at $17.62 | filing |
| 29 Apr 2026filed 29 Apr 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $617K35,000 at $17.62 | filing |
| 28 Apr 2026filed 29 Apr 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $451K25,000 at $18.02 | filing |
| 28 Apr 2026filed 29 Apr 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $451K25,000 at $18.02 | filing |
| 31 Mar 2026filed 31 Mar 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $657K34,000 at $19.31 | filing |
| 31 Mar 2026filed 31 Mar 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $657K34,000 at $19.31 | filing |
| 30 Mar 2026filed 31 Mar 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $365K20,000 at $18.23 | filing |
| 30 Mar 2026filed 31 Mar 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $365K20,000 at $18.23 | filing |
| 2 Feb 2026filed 3 Feb 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $1.0M57,000 at $17.96 | filing |
| 2 Feb 2026filed 3 Feb 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $1.0M57,000 at $17.96 | filing |
| 9 Jan 2026filed 9 Jan 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $331K20,000 at $16.55 | filing |
| 9 Jan 2026filed 9 Jan 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $331K20,000 at $16.55 | filing |
| 8 Jan 2026filed 9 Jan 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $489K30,000 at $16.30 | filing |
| 8 Jan 2026filed 9 Jan 2026 | ZBIO Zenas BioPharmaBiotechnology | SEC FORM 4 Bought | $489K30,000 at $16.30 | filing |
News
Head to Head Review: Kiniksa Pharmaceuticals International (NASDAQ:KNSA) versus Zenas BioPharma (NASDAQ:ZBIO)ZBIO · themarketsdaily.com · 18 Oct 2026Head-To-Head Contrast: Zenas BioPharma (NASDAQ:ZBIO) and MacroGenics (NASDAQ:MGNX)ZBIO · themarketsdaily.com · 14 Oct 2026
0 headlines in the last 90 days name Leon O. Moulder Jr.; 2 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.