ISSUER PROFILE · CIK 0001659617
Moleculin Biotech, Inc.MBRX
1 13D/G filings
1 distinct filers
37 insider transactions (365d)
Cross-Reference Snapshot
Distinct filers
1
single filer
Insiders (365d)
37
15 buys · 0 sales
Latest short DTC
3.15
as of 2026-05-29
13D/G Filings Timeline · 1 total
Form 4 Insider Transactions · last 365d
| Date | Insider | Role | Type | Shares | Price | Value |
|---|
| 2025-11-12 |
PICKER DONALD H |
officer |
Award |
200,000 |
$0.49 |
$98K |
| 2025-11-12 |
Foster Jonathan P. |
officer |
Award |
600,000 |
$0.49 |
$294K |
| 2025-11-12 |
KLEMP WALTER V |
director, officer |
Award |
830,000 |
$0.49 |
$407K |
| 2025-11-12 |
Yan Joy |
director |
Award |
150,000 |
$0.49 |
$74K |
| 2025-11-12 |
Cermak Elizabeth |
director |
Award |
150,000 |
$0.49 |
$74K |
| 2025-11-12 |
CANNON MICHAEL D |
director |
Award |
150,000 |
$0.49 |
$74K |
| 2025-11-12 |
Climaco John M |
director |
Award |
150,000 |
$0.49 |
$74K |
| 2025-11-12 |
George Robert E. |
director |
Award |
150,000 |
$0.49 |
$74K |
| 2025-11-12 |
KLEMP WALTER V |
director, officer |
Award |
750,000 |
— |
— |
| 2025-11-12 |
Foster Jonathan P. |
officer |
Award |
400,000 |
— |
— |
| 2025-11-12 |
PICKER DONALD H |
officer |
Award |
200,000 |
— |
— |
| 2025-11-04 |
PICKER DONALD H |
officer |
Option exercise |
8,750 |
— |
— |
| 2025-11-04 |
KLEMP WALTER V |
director, officer |
Option exercise |
28,750 |
— |
— |
| 2025-11-04 |
Foster Jonathan P. |
officer |
Option exercise |
20,625 |
— |
— |
| 2025-11-04 |
Foster Jonathan P. |
officer |
Option exercise |
5,023 |
$0.50 |
$2K |
| 2025-11-04 |
KLEMP WALTER V |
director, officer |
F |
7,001 |
$0.50 |
$3K |
| 2025-11-04 |
PICKER DONALD H |
officer |
F |
2,131 |
$0.50 |
$1K |
| 2025-06-23 |
KLEMP WALTER V |
director, officer |
Buy |
675,675 |
$0.37 |
$250K |
| 2025-06-23 |
KLEMP WALTER V |
director, officer |
Buy |
2,027,025 |
$0.37 |
$750K |
| 2025-06-23 |
Foster Jonathan P. |
officer |
Buy |
270,270 |
$0.37 |
$100K |
| 2025-06-23 |
Foster Jonathan P. |
officer |
Buy |
810,810 |
$0.37 |
$300K |
| 2025-06-22 |
PICKER DONALD H |
officer |
Option exercise |
1,766 |
— |
— |
| 2025-06-22 |
PICKER DONALD H |
officer |
F |
430 |
$0.27 |
$115 |
| 2025-06-22 |
KLEMP WALTER V |
director, officer |
Option exercise |
8,990 |
— |
— |
| 2025-06-22 |
KLEMP WALTER V |
director, officer |
F |
2,190 |
$0.27 |
$585 |
Showing 25 of 37
FINRA Short Interest History
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|
| 2026-05-29 |
828,958 |
3.15 |
+57.1% |
| 2026-05-15 |
527,786 |
2.12 |
+57.9% |
| 2026-04-30 |
334,361 |
2.57 |
+141.0% |
| 2026-04-15 |
138,763 |
1.67 |
+21.8% |
| 2026-03-31 |
113,910 |
1.10 |
+4.0% |
| 2026-03-13 |
109,555 |
1.00 |
-42.7% |
| 2026-02-27 |
191,156 |
1.00 |
-56.7% |
| 2026-02-13 |
441,371 |
6.38 |
+2.9% |
| 2026-01-30 |
429,080 |
3.69 |
+19.8% |
| 2026-01-15 |
358,088 |
2.29 |
+108.8% |
| 2025-12-31 |
171,538 |
1.00 |
-2.5% |
| 2025-12-15 |
175,916 |
1.00 |
-95.3% |
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