Walter V. Klemp - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Walter V. Klemp has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
Profile
Walter V. Klemp is CEO and President at Moleculin Biotech, Inc. (MBRX). SEC records also connect Klemp to Autonomix Medical, Inc. (AMIX). Klemp has reported 5 insider filings with the SEC since 2024. The most recent filing was in June 2026.
| Role | CEO and President, Director |
|---|---|
| Notability | 40/100 |
Board memberships
- Moleculin Biotech, Inc.
- Autonomix Medical, Inc.
Reported roles
- CEO and President
- Director
Trading Pattern
InsiderAlpha's records for Walter V. Klemp 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 Walter V. Klemp 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.
- CEO and President, Director at Moleculin Biotech, Inc. (MBRX) - 4 filings, 2024 to 2026
- Director at Autonomix Medical, Inc. (AMIX) - 1 filing, 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-25 | MBRX | Moleculin Biotech, Inc. | F - Tax withholding / forfeiture | 88 | $3.12 | $275 |
| 2026-06-25 | MBRX | Moleculin Biotech, Inc. | M - Option exercise | 360 | - | |
| 2026-06-25 | MBRX | Moleculin Biotech, Inc. | F - Tax withholding / forfeiture | 37 | $2.88 | $107 |
| 2026-06-25 | MBRX | Moleculin Biotech, Inc. | M - Option exercise | 150 | - | |
| 2025-11-06 | MBRX | Moleculin Biotech, Inc. | F - Tax withholding / forfeiture | 7.0K | $0.50 | $3K |
| 2025-11-06 | MBRX | Moleculin Biotech, Inc. | M - Option exercise | 28.8K | - |
Companies - Last 90 Days
- Moleculin Biotech, Inc. (MBRX) - 1 filing, last 2026-06-25
Most Active Insiders Right Now
Walter V. Klemp 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:
- Long Wan
- Kelcy L. Warren
- V. Prem Et Al Watsa
- Alan Waxman
- Patrick Whitesell
- Gregg Williams
- Stephen T. Wills
- WINMILL CO. INC
Frequently Asked Questions
Who is Walter V. Klemp?
Walter V. Klemp is CEO and President at Moleculin Biotech, Inc. (MBRX). SEC records also connect Klemp to Autonomix Medical, Inc. (AMIX). Klemp 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 Walter V. Klemp submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Walter V. Klemp'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 Walter V. Klemp profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.