Moleculin Biotech Inc.

Last updated September 27, 2026

Organization details

Legal name
Moleculin Biotech Inc.
Ownership
Public
Status
Active
Sector (GICS)
Health Care
SIC code
2834 — Pharmaceutical Preparations
Jurisdiction of incorporation
Delaware
Headquarters city
Houston
Headquarters state / province
Texas
Headquarters country
United States
Fiscal year end
December
Ticker symbol
MBRX
Primary stock exchange
Nasdaq

Identifiers

SEC CIK
0001659617
EIN
47-4671997

Board of directors

Chief executives

Walter Klemp V · CEO and President
Dates unknown

Director election results

Annual meeting of October 9, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

2 of this board's directors also sit on 2 other boards. 2 are in the same sector.

Network of Moleculin Biotech Inc.'s board connections Autonomix Medical Inc. Autonomix Medical Inc. CNS Pharmaceuticals Inc. CNS Pharmaceuticals In... John M. Climaco John M. Climaco Walter Klemp V Walter Klemp V Moleculin Biotech Inc.
Shared director Other board Same sector

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months
$0
3 purchases by 3 insiders
Sold, last 12 months
$0
0 sales by 0 insiders
Date Insider Transaction Shares Price Value
Nov 4, 2026 Jonathan P. Foster Officer (Chief Financial Officer) Option exercise +41 — —
Nov 4, 2026 Walter Klemp V Director, Officer (CEO and President) Option exercise +57 — —
Nov 4, 2026 PICKER DONALD H Officer (Chief Science Officer) Option exercise +17 — —
Nov 4, 2026 Jonathan P. Foster Officer (Chief Financial Officer) Shares withheld for tax −10 $8.46 $85
Nov 4, 2026 Walter Klemp V Director, Officer (CEO and President) Shares withheld for tax −14 $8.46 $118
Nov 4, 2026 PICKER DONALD H Officer (Chief Science Officer) Shares withheld for tax −4 $8.46 $34
Oct 15, 2026 Jonathan P. Foster Officer (Chief Financial Officer) Option exercise +130,000 — —
Oct 15, 2026 Walter Klemp V Director, Officer (CEO and President) Option exercise +207,500 — —
Oct 15, 2026 Jonathan P. Foster Officer (Chief Financial Officer) Shares withheld for tax −30,485 $0.37 $11,283
Oct 15, 2026 Walter Klemp V Director, Officer (CEO and President) Shares withheld for tax −48,659 $0.37 $18,009
Aug 3, 2026 Jonathan P. Foster Officer (Chief Financial Officer) Open-market purchase +293,333 — —
Aug 3, 2026 Walter Klemp V Director, Officer (CEO and President) Open-market purchase +533,333 — —
Aug 3, 2026 PICKER DONALD H Officer (Chief Science Officer) Open-market purchase +173,333 — —
Jun 22, 2026 PICKER DONALD H Officer (Chief Science Officer) Option exercise +71 — —
Jun 22, 2026 Walter Klemp V Director, Officer (CEO and President) Option exercise +360 — —

Organizations in the same sector, closest in location and size first.

Questions about Moleculin Biotech Inc.

Who is the CEO of Moleculin Biotech Inc.?

Walter Klemp V is Moleculin Biotech Inc.'s CEO and President.

How many directors are on Moleculin Biotech Inc.'s board?

Moleculin Biotech Inc.'s board has 6 directors: Elizabeth Cermak, John M. Climaco, Joy Yan, Michael D. Cannon, Robert E. George and Walter Klemp V.

Are Moleculin Biotech Inc. insiders buying or selling shares?

Over the last 12 months, Moleculin Biotech Inc. insiders bought $0 of shares in 3 purchases and made no open-market sales on the open market, as reported to the SEC on Forms 4 and 5.

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