Donald H. Picker - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Donald H. Picker has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
Profile
Donald H. Picker is the Chief Science Officer at Moleculin Biotech, Inc. (MBRX). Picker has reported 5 insider filings with the SEC since 2024. The most recent filing was in June 2026.
| Role | Chief Science Officer |
|---|---|
| Notability | 34/100 |
Board memberships
- Moleculin Biotech, Inc.
Reported roles
- Chief Science Officer
Trading Pattern
InsiderAlpha's records for Donald H. Picker go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Donald H. Picker has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Chief Science Officer at Moleculin Biotech, Inc. (MBRX) - 4 filings, 2024 to 2026
- CSO at Moleculin Biotech, Inc. (MBRX) - 1 filing, 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-25 | MBRX | Moleculin Biotech, Inc. | F - Tax withholding / forfeiture | 21 | $3.12 | $66 |
| 2026-06-25 | MBRX | Moleculin Biotech, Inc. | M - Option exercise | 71 | - | |
| 2026-06-25 | MBRX | Moleculin Biotech, Inc. | F - Tax withholding / forfeiture | 13 | $2.88 | $37 |
| 2026-06-25 | MBRX | Moleculin Biotech, Inc. | M - Option exercise | 44 | - | |
| 2025-11-06 | MBRX | Moleculin Biotech, Inc. | F - Tax withholding / forfeiture | 2.1K | $0.50 | $1K |
| 2025-11-06 | MBRX | Moleculin Biotech, Inc. | M - Option exercise | 8.8K | - | |
| 2025-06-20 | MBRX | Moleculin Biotech, Inc. | F - Tax withholding / forfeiture | 430 | $0.27 | $115 |
| 2025-06-20 | MBRX | Moleculin Biotech, Inc. | M - Option exercise | 1.8K | - | |
| 2025-06-20 | MBRX | Moleculin Biotech, Inc. | F - Tax withholding / forfeiture | 263 | $0.27 | $70 |
| 2025-06-20 | MBRX | Moleculin Biotech, Inc. | M - Option exercise | 1.1K | - |
Companies - Last 90 Days
- Moleculin Biotech, Inc. (MBRX) - 1 filing, last 2026-06-25
Most Active Insiders Right Now
Donald H. Picker has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- DONEGAL MUTUAL INSURANCE CO
- DORCHESTER MINERALS OPERATING LP
- Robert W. Duggan
- John Earl
- EcoR1 Capital, LLC
- ECP ControlCo, LLC
- ECP Fiber Holdings GP, LLC
- Electrum Strategic Resources L.P.
Frequently Asked Questions
Who is Donald H. Picker?
Donald H. Picker is the Chief Science Officer at Moleculin Biotech, Inc. (MBRX). Picker has reported 5 insider filings with the SEC since 2024. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Donald H. Picker submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Donald H. Picker's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Donald H. Picker profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.