SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Klein Michael Stuart (Last) (First) (Middle) C/O ALTC ACQUISITION CORP. 640 FIFTH AVENUE, 12TH FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Oklo Inc. [ OKLO ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 05/09/2024
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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, par value $0.0001 per share	05/09/2024		M		12,500,000(2)	A	(2)	13,935,500	I	See Footnotes(1)(3)

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 Securities Underlying Derivative Security (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: 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
Class B Common Stock, par value $0.0001 per share	(2)	05/09/2024		M			12,500,000	(2)	(2)	Class A Common Stock, par value $0.0001 per share	12,500,000	(2)	0	I	See Footnotes(1)(3)

1. Name and Address of Reporting Person* Klein Michael Stuart (Last) (First) (Middle) C/O ALTC ACQUISITION CORP. 640 FIFTH AVENUE, 12TH FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* M. Klein Associates, Inc. (Last) (First) (Middle) C/O ALTC ACQUISITION CORP. 640 FIFTH AVENUE, 12TH FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* AltC Sponsor LLC (Last) (First) (Middle) C/O ALTC ACQUISITION CORP. 640 FIFTH AVENUE, 12TH FLOOR (Street) NEW YORK NY 10019 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. This Form 4 is filed by the following Reporting Persons: Michael Stuart Klein, M. Klein Associates, Inc., and AltC Sponsor LLC (the "Sponsor"). Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests.

2. Upon the consummation of AltC Acquisition Corp.'s business combination with Oklo Inc. on May 9, 2024 (the "Business Combination"), each issued and outstanding share of Class B common stock of the Issuer (formerly, AltC Acquisition Corp.) automatically converted into one share of Class A common stock, par value $0.0001 per share, of the Issuer pursuant to the Issuer's certificate of incorporation in effect prior to the Business Combination.

3. The reported shares of the Issuer are directly held by the Sponsor. Michael Klein is the controlling stockholder of M. Klein Associates, Inc., which is the managing member of the Sponsor. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 under the Securities Exchange Act of 1934, as amended, or otherwise, any of the Reporting Persons is the beneficial owner of any securities reported herein. The Reporting Persons disclaim beneficial ownership of any securities of the Issuer except to the extent of such Reporting Person's pecuniary interest therein.

Remarks:

Exhibit 99.1 (Joint filer information) is incorporated by reference here.

	See Exhibit 99.1 for signatures	05/13/2024
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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