William Carroll Murphy Goodwin - 18 Nov 2025 Form 4 Insider Report for Oklo Inc. (OKLO)

Role: Chief Legal & Strategy Officer
Signature: /s/ Richard Craig Bealmear, Attorney-in-Fact
Issuer symbol: OKLO
Transactions as of: 18 Nov 2025
Net transactions value: -$1,215,538
Form type: 4
Filing time: 20 Nov 2025, 17:59:31 UTC
Previous filing: 09 Sep 2025
Next filing: 02 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Goodwin William Carroll Murphy	Chief Legal & Strategy Officer	C/O OKLO INC., 3190 CORONADO DR., SANTA CLARA	/s/ Richard Craig Bealmear, Attorney-in-Fact	20 Nov 2025	0002080717

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OKLO	Class A Common Stock	Options Exercise		+20,686			20,686	18 Nov 2025	Direct	F1
transaction	OKLO	Class A Common Stock	Sale	$1,215,538	-11,936	-58%	$101.84	8,750	19 Nov 2025	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	OKLO	Restricted Stock Units	Options Exercise	$0	-20,686	-13%	$0.000000	144,798	18 Nov 2025	Class A Common Stock	20,686		Direct	F1, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock. On November 18, 2025, 20,686 RSUs were released to the Reporting Person.
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 listed in Table II. 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.
F3	On August 6, 2025, the Reporting Person was granted 248,227 RSUs, vesting as to one-third of the underlying shares on August 12, 2025 and thereafter in eight substantially equal quarterly installments.