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Insider ActivityZBIO
Fairmount Funds Management LLC, Director at Zenas BioPharma, Inc., bought $3.0M of ZBIO
Updated Jun 10, 2026
Fairmount Funds Management LLC
Director
Zenas BioPharma, Inc. ·
$ZBIO
Transaction Details
| Insider | Fairmount Funds Management LLC |
|---|---|
| Title | Director |
| Company | Zenas BioPharma, Inc. |
| Ticker | ZBIO |
| Transaction Type | Purchase |
| Transaction Date | 2026-03-31 |
| Shares Traded | 150,000 |
| Price Per Share | $20 |
| Total Value | $3.0M |
| Filed Date | 2026-04-01 |
| Accession Number | 0001104659-26-038546 |
Ownership Context
| Shares Owned After Transaction | 2,359,025 |
|---|---|
| Ownership Type | Indirect |
SEC Filing
Accession: 0001104659-26-038546
Other Insider Trades — ZBIO
| Insider | Title | Action | Value | Date |
|---|---|---|---|---|
| MOULDER LEON O JR | Chief Executive Officer, Director | bought | $1.0M | 2026-05-18 |
| MOULDER LEON O JR | Chief Executive Officer, Director | bought | $617K | 2026-04-29 |
| MOULDER LEON O JR | Chief Executive Officer, Director | bought | $450K | 2026-04-28 |
| Lu Hongbo | Director | bought | $70K | 2026-03-31 |
| MOULDER LEON O JR | Chief Executive Officer, Director | bought | $657K | 2026-03-31 |
| Lu Hongbo | Director | bought | $1.5M | 2026-03-31 |
| MOULDER LEON O JR | Chief Executive Officer, Director | bought | $365K | 2026-03-30 |
Other Trades by Fairmount Funds Management LLC
| Ticker | Company | Action | Value | Date |
|---|---|---|---|---|
| CBIO | CRESCENT BIOPHARMA, INC. | traded | — | 2026-06-02 |
| ORKA | Oruka Therapeutics, Inc. | traded | — | 2026-06-02 |
| SYRE | Spyre Therapeutics, Inc. | traded | — | 2026-05-27 |
| VRDN | Viridian Therapeutics, Inc.\DE | bought | $20.0M | 2026-05-11 |
| COGT | Cogent Biosciences, Inc. | traded | — | 2026-03-31 |
| COGT | Cogent Biosciences, Inc. | sold | $242.6M | 2026-03-31 |
| COGT | Cogent Biosciences, Inc. | traded | — | 2026-03-31 |
| DMRA | Damora Therapeutics, Inc. | traded | — | 2026-03-23 |
Full Ticker Profile
View all insider trades, dark pool activity, congressional filings, and the Whisper Score for ZBIO — Zenas BioPharma, Inc. →
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Data sourced from SEC Form 4 insider trading filings. Transaction details are as reported to the Securities and Exchange Commission. This page does not constitute financial advice. StonkWhisper presents public records — it does not verify or guarantee the accuracy of SEC filings.
Last updated: June 10, 2026 at 07:21 UTC