Oklo insider plans 365-share, $15.8K stock sale

Director-level insider Vivek Narayanadas filed a Rule 144 notice to sell 365 Oklo Class A shares, following multiple recent sales.

Rhea-AI Filing Summary

Oklo Inc. (OKLO) is the issuer in a notice that Vivek Narayanadas intends to sell Class A common stock under Rule 144. The planned sale covers 365 shares, acquired through Restricted Stock Vesting on September 8, 2026, with part of the sale described as covering a related tax obligation.

The shares are held at Fidelity Brokerage Services LLC, and Oklo reports 186,017,650 Class A shares outstanding. The notice also lists several prior open-market sales of Oklo Class A shares by Narayanadas over the preceding three months.

Key Figures

Shares to be sold under Rule 144: 365 shares Aggregate market value of planned sale: $15,809.21 Shares outstanding: 186,017,650 shares +3 more

6 metrics

Shares to be sold under Rule 144 365 shares Planned sale of Oklo Inc. Class A common stock by Vivek Narayanadas

Aggregate market value of planned sale $15,809.21 Value of 365 Oklo Class A shares covered by the Form 144 notice

Shares outstanding 186,017,650 shares Oklo Inc. Class A shares outstanding referenced in the notice

Acquisition date of shares to be sold September 8, 2026 Date the 365 shares were acquired via Restricted Stock Vesting

Largest recent sale by shares 3,264 shares for $129,810.91 Sale of Oklo Class A shares by Vivek Narayanadas on August 24, 2026

Recent sale on July 17, 2026 935 shares for $38,877.49 Oklo Class A shares sold by Vivek Narayanadas during prior three months

Key Terms

Rule 144, Restricted Stock Vesting, aggregate market value, attorney-in-fact

4 terms

Rule 144 regulatory

"See the 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

"Class A | 09/08/2026 | Restricted Stock Vesting | Issuer"

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.

aggregate market value financial

"Class A | ... | 365 | 15809.21 | 186017650"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

attorney-in-fact regulatory

"as attorney-in-fact for Vivek Narayanadas."

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

What does the Form 144 filing for OKLO disclose about upcoming insider sales?

The Form 144 states that Vivek Narayanadas plans to sell 365 shares of Oklo Inc. Class A common stock under Rule 144. The shares were acquired via Restricted Stock Vesting on September 8, 2026, and part of the sale is noted as covering a tax obligation from that vesting.

How many Oklo Inc. (OKLO) shares are outstanding according to this Form 144?

The notice reports that Oklo Inc. has 186,017,650 Class A shares outstanding. This figure is disclosed in the securities information section and serves as context for the relative size of the insider’s planned and recent sales.

What is the aggregate market value of the Oklo (OKLO) shares to be sold under this Form 144?

For the planned Rule 144 sale, the filing lists an aggregate market value of $15,809.21 for the 365 Oklo Class A shares to be sold. This amount is shown alongside the approximate sale date and exchange information.

What recent Oklo (OKLO) stock sales by Vivek Narayanadas are disclosed?

Over the past three months, the filing lists several sales of Oklo Class A shares by Vivek Narayanadas, including 3,264 shares for $129,810.91 on August 24, 2026 and 935 shares for $38,877.49 on July 17, 2026, along with multiple smaller transactions.

Why does the Form 144 say part of the Oklo (OKLO) sale is for taxes?

In the remarks, the filing explains that the sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution. This refers to taxes triggered by the Restricted Stock Vesting on September 8, 2026.

Through which broker and exchange will the Oklo (OKLO) shares be sold under this Form 144?

The planned sale of 365 Oklo Class A shares is associated with Fidelity Brokerage Services LLC as the broker, and the securities information section identifies the trading venue as the NYSE.

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

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Available on EDGAR 09/09/2026 - 03:23 PM EDT Accepted by SEC EDGAR 09/09/2026 - 03:22 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	0002146790
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	Narayanadas Vivek
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	365	15809.21	186017650	09/09/2026	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	09/08/2026	Restricted Stock Vesting	Issuer			365	09/08/2026	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
Vivek Narayanadas 3190 Coronado Dr. Santa Clara CA 95054	Class A	06/09/2026	239	14000.62
Vivek Narayanadas 3190 Coronado Dr. Santa Clara CA 95054	Class A	07/17/2026	935	38877.49
Vivek Narayanadas 3190 Coronado Dr. Santa Clara CA 95054	Class A	07/20/2026	411	16941.42
Vivek Narayanadas 3190 Coronado Dr. Santa Clara CA 95054	Class A	08/24/2026	3264	129810.91
Vivek Narayanadas 3190 Coronado Dr. Santa Clara CA 95054	Class A	08/25/2026	223	9098.40
Vivek Narayanadas 3190 Coronado Dr. Santa Clara CA 95054	Class A	09/04/2026	538	21455.12
Vivek Narayanadas 3190 Coronado Dr. Santa Clara CA 95054	Class A	09/08/2026	238	10010.28

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	09/09/2026
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/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Vivek Narayanadas.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)