Transaction · 0001437749-26-032865

Klemp Walter V

KLEMP WALTER V, CEO, PRES, reported a transaction classified as exercise at Moleculin Biotech, Inc. involving 207500.000000 shares for an estimated $0.00. Reported holdings after the transaction were 2548335.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

exerciseSEC transaction code MCEO, PRES
MBRXMoleculin Biotech, Inc.
Trade date
Oct 15, 2026
Filing date
Oct 17, 2026
View on SEC Insider profile
Estimated value$0Shares × reported price
Shares traded207k$0.00 per share
Holdings after2.54MDirect
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Not calculated for derivative securities.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

MBRX price since this filing

Daily closing prices, with the filing date and available return windows
MBRX · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago1w ago1d ago
Returns since7d30d90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0001437749-26-032865
Restricted Stock Units
Transaction date
Oct 15, 2026
Filed Oct 17, 2026, 01:00 AM · 2d delay
Shares
207,500 sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
2,548,335 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Derivative Transaction Direct Ownership
Filing-only score

-6 points

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 2

    Filing reported within two business days of the transaction.
  • derivative_transaction-16 points

    is_derivative = true

    Derivative exercise rows are less discretionary than open-market purchases.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

CEO and President

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    Restricted stock units convert into common stock on a one-for-one basis.

  2. F2

    Shares withheld for payment of taxes upon vesting of restricted stock unit awards.

  3. F3

    The stock option/restricted stock unit set forth in this table vests as follows: (i) 50% on grant; and (ii) 50% in 18 equal installments over 18 months.

  4. F4

    Issued in connection with the reporting person's employment with the Company.

  5. F5

    Each restricted stock unit represents a contingent right to receive one shares of Company common stock.

Original filing · 0001437749-26-032865
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