3 insiders reported 39 Form 4 transactions for Moleculin Biotech, Inc. (MBRX) over the past 18 months (most recent 2026-08-05). Recent activity: Foster Jonathan P. (Chief Financial Officer) Buy 293,333 shares, PICKER DONALD H (Chief Science Officer) Buy 173,333 shares, KLEMP WALTER V (CEO and President) Buy 533,333 shares, PICKER DONALD H (Chief Science Officer) Sell 21 shares, Foster Jonathan P. (Chief Financial Officer) Buy 109 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-05 | Foster Jonathan P. | Chief Financial Officer | Buy | 293,333 | $0 |
| 2026-08-05 | PICKER DONALD H | Chief Science Officer | Buy | 173,333 | $0 |
| 2026-08-05 | KLEMP WALTER V | CEO and President | Buy | 533,333 | $0 |
| 2026-06-24 | PICKER DONALD H | Chief Science Officer | Sell | 21 | $66 |
| 2026-06-24 | Foster Jonathan P. | Chief Financial Officer | Buy | 109 | $0 |
| 2026-06-24 | KLEMP WALTER V | CEO and President | Buy | 150 | $0 |
| 2026-06-24 | PICKER DONALD H | Chief Science Officer | Sell | 13 | $37 |
| 2026-06-24 | Foster Jonathan P. | Chief Financial Officer | Sell | 31 | $89 |
| 2026-06-24 | KLEMP WALTER V | CEO and President | Sell | 37 | $107 |
| 2026-06-24 | PICKER DONALD H | Chief Science Officer | Buy | 71 | $0 |
| 2026-06-24 | Foster Jonathan P. | Chief Financial Officer | Buy | 174 | $0 |
| 2026-06-24 | KLEMP WALTER V | CEO and President | Buy | 360 | $0 |
| 2026-06-24 | PICKER DONALD H | Chief Science Officer | Buy | 44 | $0 |
| 2026-06-24 | Foster Jonathan P. | Chief Financial Officer | Sell | 41 | $128 |
| 2026-06-24 | KLEMP WALTER V | CEO and President | Sell | 88 | $275 |
| 2025-11-06 | PICKER DONALD H | Chief Science Officer | Buy | 8,750 | $0 |
| 2025-11-06 | PICKER DONALD H | Chief Science Officer | Sell | 2,131 | $1,066 |
| 2025-11-06 | KLEMP WALTER V | CEO and President | Buy | 28,750 | $0 |
| 2025-11-06 | KLEMP WALTER V | CEO and President | Sell | 7,001 | $3,500 |
| 2025-11-06 | Foster Jonathan P. | Chief Financial Officer | Sell | 5,023 | $2,512 |
| 2025-11-06 | Foster Jonathan P. | Chief Financial Officer | Buy | 20,625 | $0 |
| 2025-06-23 | PICKER DONALD H | Chief Science Officer | Sell | 430 | $116 |
| 2025-06-23 | PICKER DONALD H | Chief Science Officer | Buy | 1,078 | $0 |
| 2025-06-23 | PICKER DONALD H | Chief Science Officer | Sell | 263 | $71 |
| 2025-06-23 | PICKER DONALD H | Chief Science Officer | Buy | 1,766 | $0 |
Source: SEC Form 4 filings · as of 2026-08-05