Arkolith/Insider Trading/MBRX/Form 4

Klemp Walter V

CEO and President, DirectorMoleculin Biotech, Inc. (MBRX) · full profile →Form 4 · filed Nov 6, 2025
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
3
2 non-derivative · 1 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Nov 4, 2025Option exercise(M)29K——772K
Nov 4, 2025Tax withholding(F)7K$0.50$4K765K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Nov 4, 2025Option exercise(M)29K—$02.4M

Transaction Codes

M
Option exercise / conversion
F
Shares withheld for taxes

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001437749-25-033683) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML