United States Pharmaceuticals

Moleculin Biotech Inc (MBRX)

Track

Moleculin Biotech Inc. has seen no insider trading activity within the last three months. The most recent transactions occurred on June 23, 2025, when the CEO and CFO both executed buy orders for company shares. Prior to this, the last recorded insider activity took place in December 2023.
Ticker: MBRX Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Moleculin Biotech Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
0.5
Foster Jonathan P. Chief Financial Officer Officer
Transaction date
Purchase
Price
408.29
Quantity 90,745 +2.2%
Value US$1,209,670
2.0
KLEMP WALTER V CEO and President Executive Director
Transaction date
Purchase
Price
312.32
Quantity 29,895 +7.1%
Value US$4,131,546
0.5
George Robert E. Non-Executive Director
Transaction date
Purchase
Price
209.24
Quantity 33,978 +27.8%
Value US$3,731,562
0.5
Foster Jonathan P. Chief Financial Officer Officer
Transaction date
Purchase
Price
0.69
Quantity 28,986 +56.2%
Value US$20,000
2.0
KLEMP WALTER V CEO and President Executive Director
Transaction date
Purchase
Price
0.69
Quantity 188,404 +38.3%
Value US$129,999
2.0
KLEMP WALTER V CEO and President Executive Director
Transaction date
Purchase
Price
1.28
Quantity 45,000 +12.3%
Value US$57,632
2.0
KLEMP WALTER V CEO and President Executive Director
Transaction date
Purchase
Price
1.15
Quantity 22,500 +6.6%
Value US$25,866
2.0
KLEMP WALTER V CEO and President Executive Director
Transaction date
Purchase
Price
1.02
Quantity 24,742 +7.8%
Value US$25,257
2.0
KLEMP WALTER V CEO and President Executive Director
Transaction date
Purchase
Price
0.97
Quantity 85,213 +36.7%
Value US$82,614
KLEMP WALTER V Chief Executive Officer Executive Director Large shareholder
Transaction date
Sale
Price
1.70
Quantity 100,000 -9.4%
Value US$170,300
Priebe Waldemar Large shareholder
Transaction date
Sale
Price
1.70
Quantity 100,000 -3.5%
Value US$170,300
KLEMP WALTER V Chief Executive Officer Executive Director Large shareholder
Transaction date
Purchase
Price
0.81
Quantity 12,000 +1.1%
Value US$9,720
Northcut Jacqueline Non-Executive Director
Transaction date
Purchase
Price
0.82
Quantity 1,000 +inf%
Value US$820
George Robert E.
Transaction date
Purchase
Price
0.94
Quantity 1,000 +inf%
Value US$938
Foster Jonathan P. Exec. Vice President & CFO
Transaction date
Purchase
Price
0.86
Quantity 10,000 +inf%
Value US$8,649
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-06-23 2025-06-23 B Purchase
0.5
Foster Jonathan P.

Chief Financial Officer

Officer
90,745 +2.2%
408.29
US$1,209,670 		90,745 +2.2% 408.29 US$1,209,670
2025-06-23 2025-06-23 B Purchase
2.0
KLEMP WALTER V

CEO and President

Executive Director
29,895 +7.1%
312.32
US$4,131,546 		29,895 +7.1% 312.32 US$4,131,546
2023-12-27 2023-12-26 B Purchase
0.5
George Robert E.
Non-Executive Director
33,978 +27.8%
209.24
US$3,731,562 		33,978 +27.8% 209.24 US$3,731,562
2023-12-27 2023-12-26 B Purchase
0.5
Foster Jonathan P.

Chief Financial Officer

Officer
28,986 +56.2%
0.69
US$20,000 		28,986 +56.2% 0.69 US$20,000
2023-12-27 2023-12-26 B Purchase
2.0
KLEMP WALTER V

CEO and President

Executive Director
188,404 +38.3%
0.69
US$129,999 		188,404 +38.3% 0.69 US$129,999
2022-11-28 2022-11-25 B Purchase
2.0
KLEMP WALTER V

CEO and President

Executive Director
45,000 +12.3%
1.28
US$57,632 		45,000 +12.3% 1.28 US$57,632
2022-11-23 2022-11-21 B Purchase
2.0
KLEMP WALTER V

CEO and President

Executive Director
22,500 +6.6%
1.15
US$25,866 		22,500 +6.6% 1.15 US$25,866
2022-11-18 2022-11-17 B Purchase
2.0
KLEMP WALTER V

CEO and President

Executive Director
24,742 +7.8%
1.02
US$25,257 		24,742 +7.8% 1.02 US$25,257
2022-11-18 2022-11-16 B Purchase
2.0
KLEMP WALTER V

CEO and President

Executive Director
85,213 +36.7%
0.97
US$82,614 		85,213 +36.7% 0.97 US$82,614
2017-08-18 2017-08-16 S Sale KLEMP WALTER V

Chief Executive Officer

Executive Director Large shareholder
100,000 -9.4%
1.70
US$170,300 		100,000 -9.4% 1.70 US$170,300
2017-08-18 2017-08-16 S Sale Priebe Waldemar Large shareholder
100,000 -3.5%
1.70
US$170,300 		100,000 -3.5% 1.70 US$170,300
2017-05-12 2017-05-11 B Purchase KLEMP WALTER V

Chief Executive Officer

Executive Director Large shareholder
12,000 +1.1%
0.81
US$9,720 		12,000 +1.1% 0.81 US$9,720
2017-05-05 2017-05-05 B Purchase Northcut Jacqueline Non-Executive Director
1,000 +inf%
0.82
US$820 		1,000 +inf% 0.82 US$820
2017-04-28 2017-04-28 B Purchase George Robert E.
1,000 +inf%
0.94
US$938 		1,000 +inf% 0.94 US$938
2017-04-26 2017-04-25 B Purchase Foster Jonathan P.

Exec. Vice President & CFO
10,000 +inf%
0.86
US$8,649 		10,000 +inf% 0.86 US$8,649
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