David Krempa - 06 Oct 2026 Form 4 Insider Report for Eton Pharmaceuticals, Inc. (ETON)

Reporting relationship: Chief Business Officer
Issuer ticker: ETON
Reported as of: 06 Oct 2026
Net transaction value: -$229,406
SEC form: 4
Accepted by SEC: 06 Oct 2026, 16:49:24 UTC
Prior SEC filing: 24 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Judith M Matthews

Filing notes and source

Key filing fact

David Krempa filed Form 4 for Eton Pharmaceuticals, Inc. (ETON) on 06 Oct 2026.

Key facts

This page summarizes David Krempa's Form 4 filing for Eton Pharmaceuticals, Inc. (ETON).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 06 Oct 2026, 16:49.

Change

Previous filing in this sequence was filed on 24 Aug 2026.
Current net transaction value: -$229,406.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001968254 Primary reporting owner

Krempa David

Relationship: Chief Business Officer
Address: C/O ETON PHARMACEUTICALS, INC., 21925 W. FIELD PARKWAY, SUITE 235, DEERPARK
Signature: /s/ Judith M Matthews
Signature date: 06 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ETON transaction

Common Stock

Options Exercise

Transaction value
Shares: +10,522
Change %: +28%
Price
Shares after: 47,547
Date: 02 Oct 2026
Ownership: Direct
Footnotes: F3

ETON transaction

Common Stock

Sale

Transaction value: -$229,406
Shares: -4,166
Change %: -8.8%
Price: $55.07
Shares after: 43,381
Date: 06 Oct 2026
Ownership: Direct
Footnotes: F1, F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ETON transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -10,522
Change %: -33%
Price: $0.000000^*
Shares after: 21,044
Date: 02 Oct 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 10,522
Exercise price: $0.000000
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

The Reporting Person will provide upon request by the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.

Footnote F2

The shares were sold in multiple trades at prices ranging from $54.915 to $55.135. The price reported above reflects the weighted average sales price.

Footnote F3

On October 2, 2024, the reporting person was granted 42,088 restricted stock units which vest in four equal annual installments beginning October 2, 2025.

SEC remarks

The reporting person has authorized and designated the named person to file this Form 4 on the reporting person's behalf for indefinite duration.