Moleculin Biotech's three largest insider shareholders as of April 17, 2026 are Walter V Klemp (Ceo And President, 30.61K shares), Jonathan P. Foster (Chief Financial Officer, 12.13K shares), Donald H Picker (Chief Science Officer, 671 shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Walter V Klemp | Ceo And President | 30,614 | 0 | 06 Nov, 2025 |
| Jonathan P. Foster | Chief Financial Officer | 12,128 | 0 | 06 Nov, 2025 |
| Donald H Picker | Chief Science Officer | 671 | 0 | 06 Nov, 2025 |
| Robert E. George | - | 586 | 0 | 27 Dec, 2023 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 12 Nov, 2025 | Elizabeth Cermak | Stock Options (right to buy) | A | 150,000 | - | 6,587 | D | A |
| 12 Nov, 2025 | Joy Yan | Stock Options (right to buy) | A | 150,000 | - | 6,560 | D | A |
| 12 Nov, 2025 | Donald H Picker | Stock option (right to buy) | A | 200,000 | - | 11,820 | D | A |
| 12 Nov, 2025 | John M Climaco | Stock Options (right to buy) | A | 150,000 | - | 6,607 | D | A |
| 12 Nov, 2025 | Robert E. George | Stock Options (right to buy) | A | 150,000 | - | 6,613 | D | A |
| 12 Nov, 2025 | Michael D Cannon | Stock Options (right to buy) | A | 150,000 | - | 6,613 | D | A |
| 12 Nov, 2025 | Walter V Klemp | Stock option (right to buy) | A | 830,000 | - | 128,429 | D | A |
| 12 Nov, 2025 | Jonathan P. Foster | Stock option (right to buy) | A | 600,000 | - | 64,708 | D | A |
| 12 Nov, 2025 | Donald H Picker | Performance Based Restricted Stock Units | A | 200,000 | - | 19,820 | D | A |
| 12 Nov, 2025 | Walter V Klemp | Performance Based Restricted Stock Units | A | 750,000 | - | 158,429 | D | A |
| 12 Nov, 2025 | Jonathan P. Foster | Performance Based Restricted Stock Units | A | 400,000 | - | 80,708 | D | A |
| 04 Nov, 2025 | Jonathan P. Foster | Common Stock | A | 20,625 | - | 12,328 | D | M |
| 04 Nov, 2025 | Donald H Picker | Common Stock | A | 8,750 | - | 756 | D | M |
| 04 Nov, 2025 | Walter V Klemp | Common Stock | A | 28,750 | - | 30,894 | D | M |
| 04 Nov, 2025 | Donald H Picker | Common Stock | D | 2,131 | $0.50 | 671 | D | F |
| 04 Nov, 2025 | Walter V Klemp | Common Stock | D | 7,001 | $0.50 | 30,614 | D | F |
| 04 Nov, 2025 | Jonathan P. Foster | Common Stock | D | 5,023 | $0.50 | 12,128 | D | M |
| 04 Nov, 2025 | Walter V Klemp | Restricted Stock Units | D | 28,750 | $0.00 | 95,229 | D | M |
| 04 Nov, 2025 | Donald H Picker | Restricted Stock Units | D | 8,750 | $0.00 | 3,820 | D | M |
| 04 Nov, 2025 | Jonathan P. Foster | Restricted Stock Units | D | 20,625 | $0.00 | 40,708 | D | M |