MBRX Moleculin Biotech, Inc.
Nasdaq · SEC CIK 1659617 · EDGAR
- Bought, last 12 months
- $0 3 purchases by 3 insiders
- Sold, last 12 months
- $0 0 sales by 0 insiders
- Filings on record
- 78 since 2021-07-06, latest 2026-08-05 16:16
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Foster Jonathan P. | CFO | — | — |
| PICKER DONALD H | CSO | — | — |
| KLEMP WALTER V | CEO, Pres, Dir | — | — |
Transactions 80
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-08-05 16:16 | 2026-08-03 | MBRX | Foster Jonathan P. | CFO | P - Purchase | — | +293.3K | 305.7K | +2,377% | — |
| D | 2026-08-05 16:16 | 2026-08-03 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | P - Purchase | — | +533.3K | 564.3K | +1,720% | — |
| D | 2026-08-05 16:15 | 2026-08-03 | MBRX | PICKER DONALD H | CSO | P - Purchase | — | +173.3K | 174.1K | +23,019% | — |
| DM | 2026-06-24 21:01 | 2026-06-20+ | MBRX | PICKER DONALD H | CSO | M - OptEx | — | +115 | 774 | +17% | — |
| DM | 2026-06-24 21:01 | 2026-06-20+ | MBRX | PICKER DONALD H | CSO | F - Tax | $3.03 | -34 | 753 | -4% | -$102.96 |
| DM | 2026-06-24 21:00 | 2026-06-20+ | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +510 | 31.1K | +2% | — |
| DM | 2026-06-24 21:00 | 2026-06-20+ | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $3.05 | -125 | 31.0K | -0.4% | -$381.12 |
| DM | 2026-06-24 21:00 | 2026-06-20+ | MBRX | Foster Jonathan P. | CFO | M - OptEx | — | +283 | 12.4K | +2% | — |
| DM | 2026-06-24 21:00 | 2026-06-20+ | MBRX | Foster Jonathan P. | CFO | F - Tax | $3.02 | -72 | 12.3K | -0.6% | -$217.20 |
| D | 2025-11-06 | 2025-11-04 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +28.8K | 772.4K | +4% | — |
| D | 2025-11-06 | 2025-11-04 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $0.5 | -7,001 | 765.4K | -0.9% | -$3,500 |
| D | 2025-11-06 | 2025-11-04 | MBRX | PICKER DONALD H | CSO | F - Tax | $0.5 | -2,131 | 16.8K | -11% | -$1,066 |
| D | 2025-11-06 | 2025-11-04 | MBRX | PICKER DONALD H | CSO | M - OptEx | — | +8,750 | 18.9K | +86% | — |
| DM | 2025-11-06 | 2025-11-04 | MBRX | Foster Jonathan P. | CFO | M - OptEx | $0.5 | +15.6K | 303.2K | +5% | +$7,801 |
| DM | 2025-06-23 | 2025-06-20+ | MBRX | PICKER DONALD H | CSO | M - OptEx | — | +2,844 | 10.6K | +37% | — |
| DM | 2025-06-23 | 2025-06-20+ | MBRX | PICKER DONALD H | CSO | F - Tax | $0.27 | -693 | 8,816 | -7% | -$187.11 |
| DM | 2025-06-23 | 2025-06-20+ | MBRX | Foster Jonathan P. | CFO | M - OptEx | — | +7,039 | 18.4K | +62% | — |
| DM | 2025-06-23 | 2025-06-20+ | MBRX | Foster Jonathan P. | CFO | F - Tax | $0.27 | -1,715 | 14.0K | -11% | -$463.05 |
| D | 2025-06-23 | 2025-06-23 | MBRX | Foster Jonathan P. | CFO | P - Purchase | $0.37 | +270.3K | 287.6K | +1,561% | +$100.0K |
| DM | 2025-06-23 | 2025-06-20+ | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +12.7K | 70.1K | +22% | — |
| D | 2025-06-23 | 2025-06-23 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | P - Purchase | $0.37 | +675.7K | 743.6K | +995% | +$250.0K |
| DM | 2025-06-23 | 2025-06-20+ | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $0.27 | -3,104 | 61.1K | -5% | -$838.08 |
| D | 2025-06-18 | 2025-06-16 | MBRX | Foster Jonathan P. | CFO | F - Tax | $0.69 | -203 | 12.0K | -2% | -$140.07 |
| D | 2025-06-18 | 2025-06-16 | MBRX | Foster Jonathan P. | CFO | M - OptEx | — | +833 | 12.2K | +7% | — |
| D | 2025-06-18 | 2025-06-16 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +1,667 | 58.7K | +3% | — |
| D | 2025-06-18 | 2025-06-16 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $0.69 | -406 | 58.3K | -0.7% | -$280.14 |
| D | 2024-07-05 | 2024-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $3.57 | -240 | 57.0K | -0.4% | -$856.80 |
| D | 2024-07-05 | 2024-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +982 | 57.3K | +2% | — |
| D | 2024-06-25 | 2024-06-22 | MBRX | PICKER DONALD H | CSO | M - OptEx | — | +1,766 | 8,525 | +26% | — |
| D | 2024-06-25 | 2024-06-22 | MBRX | PICKER DONALD H | CSO | F - Tax | $3.74 | +524 | 8,001 | +7% | +$1,960 |
| D | 2024-06-25 | 2024-06-22 | MBRX | Foster Jonathan P. | CFO | F - Tax | $3.74 | -1,053 | 11.4K | -8% | -$3,938 |
| D | 2024-06-25 | 2024-06-22 | MBRX | Foster Jonathan P. | CFO | M - OptEx | — | +4,329 | 12.4K | +54% | — |
| D | 2024-06-25 | 2024-06-22 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $3.74 | -2,190 | 56.3K | -4% | -$8,191 |
| D | 2024-06-25 | 2024-06-22 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +8,990 | 58.5K | +18% | — |
| D | 2024-06-21 | 2024-06-20 | MBRX | Foster Jonathan P. | CFO | M - OptEx | — | +2,712 | 8,723 | +45% | — |
| D | 2024-06-21 | 2024-06-20 | MBRX | Foster Jonathan P. | CFO | F - Tax | $3.78 | -636 | 8,087 | -7% | -$2,404 |
| D | 2024-06-21 | 2024-06-20 | MBRX | PICKER DONALD H | CSO | M - OptEx | — | +1,078 | 7,079 | +18% | — |
| D | 2024-06-21 | 2024-06-20 | MBRX | PICKER DONALD H | CSO | F - Tax | $3.78 | -320 | 6,759 | -5% | -$1,210 |
| D | 2024-06-21 | 2024-06-20 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +3,750 | 50.4K | +8% | — |
| D | 2024-06-21 | 2024-06-20 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $3.78 | -914 | 49.5K | -2% | -$3,455 |
| D | 2024-06-18 | 2024-06-16 | MBRX | Foster Jonathan P. | CFO | M - OptEx | — | +834 | 6,207 | +16% | — |
| D | 2024-06-18 | 2024-06-16 | MBRX | Foster Jonathan P. | CFO | F - Tax | $4.14 | -196 | 6,011 | -3% | -$811.44 |
| D | 2024-06-18 | 2024-06-16 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +1,667 | 47.1K | +4% | — |
| D | 2024-06-18 | 2024-06-16 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $4.14 | -406 | 46.7K | -0.9% | -$1,681 |
| 2023-12-27 | 2023-12-26 | MBRX | Foster Jonathan P. | CFO | P - Purchase | $0.69 | +29.0K | 80.6K | +56% | +$20.0K | |
| 2023-12-27 | 2023-12-26 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | P - Purchase | $0.69 | +188.4K | 680.9K | +38% | +$130.0K | |
| 2023-12-27 | 2023-12-26 | MBRX | George Robert E. | Dir | P - Purchase | $0.69 | +14.5K | 14.7K | +8,678% | +$10.0K | |
| D | 2023-07-13 | 2023-07-11 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $0.59 | -3,216 | 492.5K | -0.6% | -$1,897 |
| D | 2023-07-13 | 2023-07-11 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +13.2K | 495.7K | +3% | — |
| D | 2023-07-05 | 2023-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +14.7K | 486.1K | +3% | — |
| D | 2023-07-05 | 2023-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $0.58 | -3,584 | 482.5K | -0.7% | -$2,079 |
| D | 2023-06-22 | 2023-06-20 | MBRX | PICKER DONALD H | CSO | F - Tax | $0.57 | -4,267 | 90.0K | -5% | -$2,432 |
| D | 2023-06-22 | 2023-06-20 | MBRX | PICKER DONALD H | CSO | M - OptEx | — | +16.2K | 94.3K | +21% | — |
| D | 2023-06-22 | 2023-06-20 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +56.2K | 485.1K | +13% | — |
| D | 2023-06-22 | 2023-06-20 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $0.57 | -13.7K | 471.4K | -3% | -$7,807 |
| D | 2023-06-22 | 2023-06-20 | MBRX | Foster Jonathan P. | CFO | M - OptEx | — | +40.7K | 61.2K | +198% | — |
| D | 2023-06-22 | 2023-06-20 | MBRX | Foster Jonathan P. | CFO | F - Tax | $0.57 | -9,676 | 51.6K | -16% | -$5,515 |
| D | 2023-06-20 | 2023-06-16 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +25.0K | 434.9K | +6% | — |
| D | 2023-06-20 | 2023-06-16 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $0.57 | -6,088 | 428.8K | -1% | -$3,470 |
| D | 2023-06-20 | 2023-06-16 | MBRX | Foster Jonathan P. | CFO | M - OptEx | — | +12.5K | 23.6K | +112% | — |
| D | 2023-06-20 | 2023-06-16 | MBRX | Foster Jonathan P. | CFO | F - Tax | $0.57 | -3,044 | 20.6K | -13% | -$1,735 |
| 2022-11-28 | 2022-11-25 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | P - Purchase | $1.28 | +45.0K | 409.9K | +12% | +$57.6K | |
| 2022-11-23 | 2022-11-21 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | P - Purchase | $1.15 | +22.5K | 364.9K | +7% | +$25.9K | |
| M | 2022-11-18 | 2022-11-16+ | MBRX | KLEMP WALTER V | CEO, Pres, Dir | P - Purchase | $0.9813 | +110.0K | 317.6K | +53% | +$107.9K |
| DA | 2022-07-15 | 2022-07-11 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $1.68 | -3,215 | 232.4K | -1% | -$5,401 |
| DA | 2022-07-15 | 2022-07-11 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +13.2K | 235.7K | +6% | — |
| DA | 2022-07-15 | 2022-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $1.47 | -3,584 | 222.4K | -2% | -$5,268 |
| DA | 2022-07-15 | 2022-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +14.7K | 226.0K | +7% | — |
| D | 2022-07-13 | 2022-07-11 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +13.2K | 235.7K | +6% | — |
| D | 2022-07-13 | 2022-07-11 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $1.68 | -3,215 | 232.4K | -1% | -$5,401 |
| D | 2022-07-06 | 2022-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $1.47 | -3,584 | 222.4K | -2% | -$5,268 |
| D | 2022-07-06 | 2022-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +14.7K | 226.0K | +7% | — |
| D | 2022-06-21 | 2022-06-16 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $1.33 | -6,088 | 211.3K | -3% | -$8,097 |
| D | 2022-06-21 | 2022-06-16 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +25.0K | 217.4K | +13% | — |
| D | 2022-06-21 | 2022-06-16 | MBRX | Foster Jonathan P. | CFO | F - Tax | $1.33 | -3,044 | 11.1K | -21% | -$4,049 |
| D | 2022-06-21 | 2022-06-16 | MBRX | Foster Jonathan P. | CFO | M - OptEx | — | +12.5K | 14.2K | +750% | — |
| D | 2021-07-12 | 2021-07-11 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +13.2K | 195.6K | +7% | — |
| D | 2021-07-12 | 2021-07-11 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $3.56 | -3,215 | 192.4K | -2% | -$11.4K |
| D | 2021-07-06 | 2021-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | M - OptEx | — | +14.7K | 186.0K | +9% | — |
| D | 2021-07-06 | 2021-07-02 | MBRX | KLEMP WALTER V | CEO, Pres, Dir | F - Tax | $3.56 | -3,584 | 182.4K | -2% | -$12.8K |
Purchase Sale Sale after option exercise All abbreviations