FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Narayanadas Vivek 2. Issuer Name and Ticker or Trading Symbol Oklo Inc. [OKLO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) General Counsel & Secretary (Last) (First) (Middle) C/O OKLO INC., 3190 CORONADO DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 10/17/2026 (Street) SANTA CLARA, CA 95054 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 10/17/2026 M 4,400 A (1) 18,169(2) D Class A Common Stock 10/19/2026 S(3) 2,359 D $27.63 15,810 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units

(1)

10/17/2026

M

4,400

(4)

(4)

Class A Common Stock

4,400

(1)

42,234

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Narayanadas Vivek C/O OKLO INC. 3190 CORONADO DRIVE SANTA CLARA, CA 95054			General Counsel & Secretary

Signatures

/s/ Richard Craig Bealmear, Attorney-in-Fact		10/20/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock.
(2)	Includes 5,000 shares held in a joint account with the Reporting Person's spouse, previously reported as indirectly owned.
(3)	The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction, effected pursuant to a Rule 10b5-1 trading plan established by the reporting person on April 2, 2026, and does not represent a discretionary transaction by the Reporting Person.
(4)	On March 25, 2026, the Reporting Person was granted 22,000 RSUs, vesting as to 20% of the underlying shares on October 17, 2026 and continuing to vest thereafter in 48 substantially equal monthly installments. On October 17, 2026 4,400 RSUs vested.

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