William Carroll Murphy Goodwin - 26 Sep 2026 Form 4 Insider Report for Oklo Inc. (OKLO)

Reporting relationship: Chief Strategy Officer
Issuer ticker: OKLO
Reported as of: 26 Sep 2026
Net transaction value: -$66,367
SEC form: 4
Accepted by SEC: 29 Sep 2026, 16:24:38 UTC
Prior SEC filing: 25 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Richard Craig Bealmear, Attorney-in-Fact

Filing notes and source

Key filing fact

William Carroll Murphy Goodwin filed Form 4 for Oklo Inc. (OKLO) on 29 Sep 2026.

Key facts

This page summarizes William Carroll Murphy Goodwin's Form 4 filing for Oklo Inc. (OKLO).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 29 Sep 2026, 16:24.

Change

Previous filing in this sequence was filed on 25 Aug 2026.
Current net transaction value: -$66,367.

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 0002080717 Primary reporting owner

Goodwin William Carroll Murphy

Relationship: Chief Strategy Officer
Address: C/O OKLO INC., 3190 CORONADO DR., SANTA CLARA
Signature: /s/ Richard Craig Bealmear, Attorney-in-Fact
Signature date: 29 Sep 2026

Reported non-derivative transactions

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

OKLO transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +3,294
Change %: +7.3%
Price
Shares after: 48,562
Date: 26 Sep 2026
Ownership: Direct
Footnotes: F1

OKLO transaction

Class A Common Stock

Sale

Transaction value: -$66,367
Shares: -1,775
Change %: -3.7%
Price: $37.39
Shares after: 46,787
Date: 28 Sep 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

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

OKLO transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -3,294
Change %: -3.4%
Price: $0.000000^*
Shares after: 94,593
Date: 26 Sep 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 3,294
Exercise price
Footnotes: F1, 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

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock.

Footnote F2

Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of the RSUs. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

Footnote F3

On November 4, 2025, the Reporting Person was granted 3,294 RSUs. On September 26, 2026, the RSUs vested in full.