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United States Pharmaceuticals

Moleculin Biotech Inc (MBRX)

Track

The most recent insider trading activity occurred on June 23, 2025, with significant BUY transactions by the Chief Financial Officer and CEO. Prior to this, notable BUYs were made by executives in December 2023. Earlier transactions include SELLs in August 2017 and a series of BUYs by the CEO in late 2022.
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Ticker: MBRX Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Foster Jonathan P.
Chief Financial Officer
1 purchase — total 100,000 USD
Buy 23 Jun 2025
Value US$1,209,670.45 | Price 408.29 | Shares 90,745
Buy 23 Jun 2025
Value US$4,131,546.17 | Price 312.32 | Shares 29,895
Buy 26 Dec 2023
Value US$10,000.17 | Price 0.69 | Shares 14,493
Buy 26 Dec 2023
Value US$20,000.34 | Price 0.69 | Shares 28,986
Buy 26 Dec 2023
Value US$129,998.76 | Price 0.69 | Shares 188,404
Buy 25 Nov 2022
Value US$57,631.50 | Price 1.28 | Shares 45,000
Buy 21 Nov 2022
Value US$25,866.00 | Price 1.15 | Shares 22,500
Buy 17 Nov 2022
Value US$25,256.63 | Price 1.02 | Shares 24,742
Buy 16 Nov 2022
Value US$82,614.00 | Price 0.97 | Shares 85,213
Sale 16 Aug 2017
Value US$170,300.00 | Price 1.70 | Shares 100,000
Sale 16 Aug 2017
Value US$170,300.00 | Price 1.70 | Shares 100,000
Buy 11 May 2017
Value US$9,720.00 | Price 0.81 | Shares 12,000
Buy 5 May 2017
Value US$820.00 | Price 0.82 | Shares 1,000
Buy 28 Apr 2017
Value US$938.40 | Price 0.94 | Shares 1,000
Buy 25 Apr 2017
Value US$8,649.00 | Price 0.86 | Shares 10,000
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
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
1.9
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
1.9
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
1.9
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
1.9
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
1.9
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
1.9
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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