Walter V. Klemp
CIK: 0000938419
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (26 total)
- Oct 15, 2026MBRX
Moleculin Biotech, Inc.
Tax Payment(F)Direct48.7K shares at avg. $0.37$18K - Oct 15, 2026MBRX
Moleculin Biotech, Inc.
Exercise(M)Direct207.5K shares- - Oct 15, 2026MBRX
Moleculin Biotech, Inc.
Award(A)DirectRestricted Stock Units
415K shares- - Oct 15, 2026MBRX
Moleculin Biotech, Inc.
Award(A)DirectOptions (right to buy)
415K shares- - Sep 3, 2026AMIX
Autonomix Medical, Inc.
Award(A)Direct13K shares- - Aug 3, 2026MBRX
Moleculin Biotech, Inc.
Purchase(P)Direct533.3K shares- - Aug 3, 2026MBRX
Moleculin Biotech, Inc.
Award(A)DirectSeries I Warrants
1.6M shares- - Jun 22, 2026MBRX
Moleculin Biotech, Inc.
Exercise(M)Direct360 shares- - Jun 22, 2026MBRX
Moleculin Biotech, Inc.
Tax Payment(F)Direct88 shares at avg. $3.12$274.56 - Jun 20, 2026MBRX
Moleculin Biotech, Inc.
Tax Payment(F)Direct37 shares at avg. $2.88$106.56 - Jun 20, 2026MBRX
Moleculin Biotech, Inc.
Exercise(M)Direct150 shares- - Nov 12, 2025MBRX
Moleculin Biotech, Inc.
Award(A)DirectPerformance Based Restricted Stock Units
750K shares- - Nov 12, 2025MBRX
Moleculin Biotech, Inc.
Award(A)DirectStock option (right to buy)
830K shares- - Nov 4, 2025MBRX
Moleculin Biotech, Inc.
Exercise(M)Direct28.8K shares- - Nov 4, 2025MBRX
Moleculin Biotech, Inc.
Tax Payment(F)Direct7K shares at avg. $0.50$3K - Aug 11, 2025AMIX
Autonomix Medical, Inc.
Disposition(D)DirectOption (Right to buy)
8.8K shares- - Jun 23, 2025MBRX
Moleculin Biotech, Inc.
Purchase(P)Direct675.7K shares at avg. $0.37$250K - Jun 22, 2025MBRX
Moleculin Biotech, Inc.
Tax Payment(F)Direct2.2K shares at avg. $0.27$584.73 - Jun 22, 2025MBRX
Moleculin Biotech, Inc.
Exercise(M)Direct9K shares- - Jun 20, 2025MBRX
Moleculin Biotech, Inc.
Tax Payment(F)Direct914 shares at avg. $0.27$244.038 - Jun 20, 2025MBRX
Moleculin Biotech, Inc.
Exercise(M)Direct3.8K shares- - Jun 16, 2025MBRX
Moleculin Biotech, Inc.
Tax Payment(F)Direct406 shares at avg. $0.69$278.191 - Jun 16, 2025MBRX
Moleculin Biotech, Inc.
Exercise(M)Direct1.7K shares- - Nov 4, 2024MBRX
Moleculin Biotech, Inc.
Award(A)DirectStock option (right to buy)
100K shares- - Nov 4, 2024MBRX
Moleculin Biotech, Inc.
Award(A)DirectRestricted Stock Units
115K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 15, 2026 |  MBRX Moleculin Biotech, Inc. | Tax Payment(F) | 48,659 | $0.37 | $18,009 | Direct |
| Oct 15, 2026 | MBRX Moleculin Biotech, Inc. | Exercise(M) | 207,500 | - | $0 | Direct |
| Oct 15, 2026 | MBRX Moleculin Biotech, Inc. | Award(A) Restricted Stock Units | 415,000 | - | - | Direct |
| Oct 15, 2026 | MBRX Moleculin Biotech, Inc. | Award(A) Options (right to buy) | 415,000 | - | - | Direct |
| Sep 3, 2026 |  AMIX Autonomix Medical, Inc. | Award(A) | 13,000 | - | $0 | Direct |
| Aug 3, 2026 | MBRX Moleculin Biotech, Inc. | Purchase(P) | 533,333 | - | $0 | Direct |
| Aug 3, 2026 | MBRX Moleculin Biotech, Inc. | Award(A) Series I Warrants | 1,599,999 | - | - | Direct |
| Jun 22, 2026 | MBRX Moleculin Biotech, Inc. | Exercise(M) | 360 | - | $0 | Direct |
| Jun 22, 2026 | MBRX Moleculin Biotech, Inc. | Tax Payment(F) | 88 | $3.12 | $275 | Direct |
| Jun 20, 2026 | MBRX Moleculin Biotech, Inc. | Tax Payment(F) | 37 | $2.88 | $107 | Direct |
| Jun 20, 2026 | MBRX Moleculin Biotech, Inc. | Exercise(M) | 150 | - | $0 | Direct |
| Nov 12, 2025 | MBRX Moleculin Biotech, Inc. | Award(A) Performance Based Restricted Stock Units | 750,000 | - | - | Direct |
| Nov 12, 2025 | MBRX Moleculin Biotech, Inc. | Award(A) Stock option (right to buy) | 830,000 | - | - | Direct |
| Nov 4, 2025 | MBRX Moleculin Biotech, Inc. | Exercise(M) | 28,750 | - | - | Direct |
| Nov 4, 2025 | MBRX Moleculin Biotech, Inc. | Tax Payment(F) | 7,001 | $0.50 | $3,479 | Direct |
| Aug 11, 2025 | AMIX Autonomix Medical, Inc. | Disposition(D) Option (Right to buy) | 8,773 | - | - | Direct |
| Jun 23, 2025 | MBRX Moleculin Biotech, Inc. | Purchase(P) | 675,675 | $0.37 | $250,000 | Direct |
| Jun 22, 2025 | MBRX Moleculin Biotech, Inc. | Tax Payment(F) | 2,190 | $0.27 | $585 | Direct |
| Jun 22, 2025 | MBRX Moleculin Biotech, Inc. | Exercise(M) | 8,990 | - | - | Direct |
| Jun 20, 2025 | MBRX Moleculin Biotech, Inc. | Tax Payment(F) | 914 | $0.27 | $244 | Direct |
| Jun 20, 2025 | MBRX Moleculin Biotech, Inc. | Exercise(M) | 3,750 | - | - | Direct |
| Jun 16, 2025 | MBRX Moleculin Biotech, Inc. | Tax Payment(F) | 406 | $0.69 | $278 | Direct |
| Jun 16, 2025 | MBRX Moleculin Biotech, Inc. | Exercise(M) | 1,667 | - | - | Direct |
| Nov 4, 2024 | MBRX Moleculin Biotech, Inc. | Award(A) Stock option (right to buy) | 100,000 | - | - | Direct |
| Nov 4, 2024 | MBRX Moleculin Biotech, Inc. | Award(A) Restricted Stock Units | 115,000 | - | - | Direct |
1-25 of 26 transactions
About KLEMP WALTER V
KLEMP WALTER V (SEC CIK 0000938419) files insider reports with the SEC as CEO and President of Moleculin Biotech, Inc. (MBRX) and Director of Autonomix Medical, Inc. (AMIX).
Signal8 holds 10 ownership filings by KLEMP WALTER V, all Form 4s, filed between Nov 6, 2024 and Oct 16, 2026. Those filings report 26 transactions, from Oct 25, 2024 to Oct 15, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on KLEMP WALTER V's filings is in HOUSTON, TX.
Recent filings by KLEMP WALTER V
- Oct 15, 2026: Tax withholding of MBRX shares (Form 4, code F).
- Oct 15, 2026: Option exercise of MBRX shares (Form 4, code M).
- Oct 15, 2026: Grants or awards of MBRX derivative securities (2 lines, Form 4, code A).
- Sep 3, 2026: Grant or award of AMIX shares (Form 4, code A).
- Aug 3, 2026: Open-market purchase of MBRX shares (Form 4, code P).
Other insiders filing for Moleculin Biotech, Inc. (MBRX)
- PICKER DONALD H, Chief Science Officer
- Foster Jonathan P., Chief Financial Officer
- Yan Joy, Director
- Cermak Elizabeth, Director
- CANNON MICHAEL D, Director
- Climaco John M, Director