Oklo officer Renner plans sale of 688 Class A shares

The notice links the planned sale to restricted-stock vesting and says it includes an amount to meet a related tax obligation.

Rhea-AI Filing Summary

Oklo Inc. officer Alexandra P. Renner reported a planned sale of 688 Class A shares through Fidelity Brokerage Services LLC, with an approximate sale date of October 14, 2026. The shares are listed in connection with restricted stock vesting on October 13, 2026, and the sale includes an amount necessary to cover a tax obligation resulting from settlement of a vested equity award distribution.

Key Figures

Class A shares to be sold: 688 shares Aggregate market value: $21,155.04 Class A shares outstanding: 186,017,650 shares

3 metrics

Class A shares to be sold 688 shares Planned sale; approximate sale date October 14, 2026

Aggregate market value $21,155.04 Class A shares in the planned sale

Class A shares outstanding 186,017,650 shares Outstanding share count shown in the securities information section

Key Terms

Rule 144, Restricted Stock Vesting, vested equity award distribution

3 terms

Rule 144 regulatory

"definition of "person" in paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Restricted Stock Vesting"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

vested equity award distribution financial

"settlement of a vested equity award distribution"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many OKLO shares does Alexandra P. Renner plan to sell?

Alexandra P. Renner reported a planned sale of 688 Class A shares, with an approximate sale date of October 14, 2026. The sale is listed through Fidelity Brokerage Services LLC.

What prior OKLO sales did Alexandra P. Renner report?

For the three months before the notice, she reported sales of 1,195 Class A shares on July 17, 2026, for $49,688.34; 557 shares on August 24, 2026, for $22,152.17; 1,930 shares on September 1, 2026, for $74,110.46; and 1,100 shares on September 28, 2026, for $41,133.95.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/14/2026 - 03:26 PM EDT Accepted by SEC EDGAR 10/14/2026 - 03:26 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002147680
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Oklo Inc.
SEC File Number	001-40583
Address of Issuer	3190 CORONADO DR. SANTA CLARA CALIFORNIA 95054
Phone	650-550-0127
Name of Person for Whose Account the Securities are To Be Sold	Renner Alexandra
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	688	21155.04	186017650	10/14/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A	10/13/2026	Restricted Stock Vesting	Issuer			688	10/13/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Alexandra P. Renner 3190 Coronado Dr. Santa Clara CA 95054	Class A	07/17/2026	1195	49688.34
Alexandra P. Renner 3190 Coronado Dr. Santa Clara CA 95054	Class A	08/24/2026	557	22152.17
Alexandra P. Renner 3190 Coronado Dr. Santa Clara CA 95054	Class A	09/01/2026	1930	74110.46
Alexandra P. Renner 3190 Coronado Dr. Santa Clara CA 95054	Class A	09/28/2026	1100	41133.95

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	10/14/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Alexandra P. Renner
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)