Insider Transactions Reported by 8 Insiders of Moleculin Biotech, Inc.

Symbol
MBRX on Nasdaq
Location
Houston, TX

Insiders trading volume in the past year

Moleculin Biotech, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Walter Klemp V CEO and President, Director $2,879,003 +$250,000 +9.5% 12 Nov 2025
Jonathan P. Foster Evp & Cfo $1,735,243 +$100,000 +6.1% 12 Nov 2025
Donald H. Picker Cso $752,537 12 Nov 2025
Elizabeth Cermak Director 12 Nov 2025
Joy Yan Director 12 Nov 2025
John M. Climaco Director 12 Nov 2025
Robert E. George Director 12 Nov 2025
Michael D. Cannon Director 12 Nov 2025

Recent Insider Transactions by Companies or Individuals for Moleculin Biotech, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Walter Klemp V MBRX Performance Based Restricted Stock Units Award 23.4% 750,000 3,960,731 12 Nov 2025 Direct
Walter Klemp V MBRX Stock option (right to buy) Award 34.9% 830,000 3,210,731 12 Nov 2025 Direct
Joy Yan MBRX Stock Options (right to buy) Award 1071.4% 150,000 164,001 12 Nov 2025 Direct
Robert E. George MBRX Stock Options (right to buy) Award 978.1% 150,000 165,336 12 Nov 2025 Direct
John M. Climaco MBRX Stock Options (right to buy) Award 988.9% 150,000 165,169 12 Nov 2025 Direct
Jonathan P. Foster MBRX Performance Based Restricted Stock Units Award 24.7% 400,000 2,017,695 12 Nov 2025 Direct
Jonathan P. Foster MBRX Stock option (right to buy) Award 59% 600,000 1,617,695 12 Nov 2025 Direct
Elizabeth Cermak MBRX Stock Options (right to buy) Award 1022.6% 150,000 164,668 12 Nov 2025 Direct
Donald H. Picker MBRX Performance Based Restricted Stock Units Award 67.7% 200,000 495,508 12 Nov 2025 Direct
Donald H. Picker MBRX Stock option (right to buy) Award 209.4% 200,000 295,508 12 Nov 2025 Direct
Michael D. Cannon MBRX Stock Options (right to buy) Award 978.1% 150,000 165,336 12 Nov 2025 Direct
Walter Klemp V MBRX Common Stock Tax liability -0.91% -7,001 765,356 04 Nov 2025 Direct
Walter Klemp V MBRX Common Stock Options Exercise 3.87% 28,750 772,357 04 Nov 2025 Direct
Walter Klemp V MBRX Restricted Stock Units Options Exercise -1.19% -28,750 2,380,731 04 Nov 2025 Direct
Jonathan P. Foster MBRX Common Stock Options Exercise -1.63% -5,023 303,189 04 Nov 2025 Direct
Jonathan P. Foster MBRX Common Stock Options Exercise 7.17% 20,625 308,212 04 Nov 2025 Direct
Jonathan P. Foster MBRX Restricted Stock Units Options Exercise -1.99% -20,625 1,017,695 04 Nov 2025 Direct
Donald H. Picker MBRX Common Stock Tax liability -11.3% -2,131 16,771 04 Nov 2025 Direct
Donald H. Picker MBRX Common Stock Options Exercise 86.2% 8,750 18,902 04 Nov 2025 Direct
Donald H. Picker MBRX Restricted Stock Units Options Exercise -8.39% -8,750 95,508 04 Nov 2025 Direct
Jonathan P. Foster MBRX Common Stock Purchase 1560.7% $100,000 $0.3700 270,270 287,587 23 Jun 2025 Direct
Jonathan P. Foster MBRX Series E Warrants Purchase -43.8% -810,810 1,038,320 23 Jun 2025 Direct
Walter Klemp V MBRX Common Stock Purchase 994.6% $250,000 $0.3700 675,675 743,607 23 Jun 2025 Direct
Walter Klemp V MBRX Series E Warrants Purchase -45.7% -2,027,025 2,409,481 23 Jun 2025 Direct
Jonathan P. Foster MBRX Common Stock Tax liability -5.74% -1,054 17,317 22 Jun 2025 Direct
Jonathan P. Foster MBRX Common Stock Options Exercise 30.8% 4,328 18,371 22 Jun 2025 Direct
Jonathan P. Foster MBRX Restricted Stock Units Options Exercise -1.87% -4,328 227,510 22 Jun 2025 Direct
Walter Klemp V MBRX Common Stock Tax liability -3.12% -2,190 67,932 22 Jun 2025 Direct
Walter Klemp V MBRX Common Stock Options Exercise 14.7% 8,990 70,122 22 Jun 2025 Direct
Walter Klemp V MBRX Restricted Stock Units Options Exercise -2.3% -8,990 382,456 22 Jun 2025 Direct
Donald H. Picker MBRX Common Stock Tax liability -4.06% -430 10,152 22 Jun 2025 Direct
Donald H. Picker MBRX Common Stock Options Exercise 20% 1,766 10,582 22 Jun 2025 Direct
Donald H. Picker MBRX Restricted Stock Units Options Exercise -1.67% -1,766 104,258 22 Jun 2025 Direct
Jonathan P. Foster MBRX Common Stock Tax liability -4.5% -661 14,043 20 Jun 2025 Direct
Jonathan P. Foster MBRX Common Stock Options Exercise 22.6% 2,711 14,704 20 Jun 2025 Direct
Jonathan P. Foster MBRX Restricted Stock Units Options Exercise -1.16% -2,711 231,838 20 Jun 2025 Direct
Walter Klemp V MBRX Common Stock Tax liability -1.47% -914 61,132 20 Jun 2025 Direct
Walter Klemp V MBRX Common Stock Options Exercise 6.43% 3,750 62,046 20 Jun 2025 Direct
Walter Klemp V MBRX Restricted Stock Units Options Exercise -0.95% -3,750 391,446 20 Jun 2025 Direct
Donald H. Picker MBRX Common Stock Tax liability -2.9% -263 8,816 20 Jun 2025 Direct
Donald H. Picker MBRX Common Stock Options Exercise 13.5% 1,078 9,079 20 Jun 2025 Direct
Donald H. Picker MBRX Restricted Stock Units Options Exercise -1.01% -1,078 106,024 20 Jun 2025 Direct
Jonathan P. Foster MBRX Common Stock Tax liability -1.66% -203 11,993 16 Jun 2025 Direct
Jonathan P. Foster MBRX Common Stock Options Exercise 7.33% 833 12,196 16 Jun 2025 Direct
Jonathan P. Foster MBRX Restricted Stock Units Options Exercise -0.36% -833 230,684 16 Jun 2025 Direct
Walter Klemp V MBRX Common Stock Tax liability -0.69% -406 58,296 16 Jun 2025 Direct
Walter Klemp V MBRX Common Stock Options Exercise 2.92% 1,667 58,702 16 Jun 2025 Direct
Walter Klemp V MBRX Restricted Stock Units Options Exercise -0.45% -1,667 370,075 16 Jun 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.