Oklo director sells 10,500 shares in open market

Oklo Inc. director John M. Jansen reported an open-market sale of 10,500 shares of Class A Common Stock at $51.52 per share.

Rhea-AI Filing Summary

Oklo Inc. director John M. Jansen reported an open-market sale of 10,500 shares of Class A Common Stock at $51.52 per share. The transaction took place on March 27, 2026 and was a direct ownership sale. Following this trade, Jansen directly holds 12,354 Oklo shares.

Insights

Equity analyst

Oklo director executes sizable open-market share sale.

John M. Jansen, a director of Oklo Inc., completed an open-market sale of 10,500 shares of Class A Common Stock at $51.52 per share on March 27, 2026. The filing classifies this as a straightforward market sale.

After the transaction, Jansen directly owns 12,354 shares, indicating he retains a meaningful equity stake. The filing shows no related derivative exercises or tax-withholding events, suggesting this is a stand-alone liquidity move rather than part of an option exercise pattern.

A footnote points to Oklo’s most recent definitive proxy statement for more detail on the director’s broader equity holdings. Any additional context about his total economic exposure or board equity program would come from that proxy, while this filing strictly records this specific sale.

Insider Trade Summary

Net Seller: 10,500 shares

Net Sell 1 txn

Insider Jansen John M

Role Director

Sold 10,500 shs ($541K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	10,500	$51.52	$541K

Holdings After Transaction: Class A Common Stock — 12,354 shares (Direct)

Footnotes (1)

1. F1. For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission.

Key Figures

Shares sold: 10,500 shares Sale price per share: $51.52 per share Shares owned after sale: 12,354 shares +1 more

4 metrics

Shares sold 10,500 shares Class A Common Stock sold in open market on March 27, 2026

Sale price per share $51.52 per share Reported transaction price for the open-market sale

Shares owned after sale 12,354 shares Director’s direct holdings following the reported transaction

Net share change -10,500 shares Net effect of reported insider sale based on transaction summary

Key Terms

Class A Common Stock, open-market sale, definitive proxy statement

3 terms

Class A Common Stock financial

"security_title: "Class A Common Stock""

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

definitive proxy statement regulatory

"most recent definitive proxy statement filed with the Securities and Exchange Commission"

A Definitive Proxy Statement is a detailed document that a company sends to its shareholders before a big meeting, like voting on important decisions. It explains what's being voted on and gives important information so shareholders can make informed choices. It matters because it helps shareholders understand and participate in key company decisions.

FAQ

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

What insider transaction did Oklo (OKLO) disclose in this Form 4?

Oklo reported that director John M. Jansen sold 10,500 Class A shares. The shares were sold in an open-market transaction at $51.52 per share, and the sale is reported as a direct ownership transaction on March 27, 2026.

At what price did the Oklo (OKLO) director sell his shares?

John M. Jansen sold his Oklo shares at $51.52 each. The Form 4 shows an open-market sale of 10,500 shares of Class A Common Stock at this price, providing transparency into the actual trading level used for the director’s disposition.

How many Oklo (OKLO) shares does the director hold after the sale?

After the transaction, John M. Jansen directly holds 12,354 Oklo shares. The Form 4’s post-transaction ownership figure helps investors see that, despite the sale, the director continues to maintain a notable remaining equity position in the company.

Was the Oklo (OKLO) insider trade a direct or indirect transaction?

The reported Oklo insider sale is classified as direct ownership. The Form 4 lists the transaction with a direct ownership code, meaning the shares were held in Jansen’s own name rather than through a trust, partnership, or other indirect entity.

Where can investors find more details on Oklo (OKLO) director equity holdings?

The filing directs investors to Oklo’s most recent definitive proxy statement. A footnote explains that additional information about equity held by John M. Jansen is available in that proxy, which typically outlines director compensation, stock awards, and broader ownership details.

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

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Accepted by SEC EDGAR 03/30/2026 - 05:57 PM Learn about SEC filing dates

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Jansen John M

(Last) (First) (Middle)

C/O OKLO INC.

3190 CORONADO DR.

(Street)

SANTA CLARA CALIFORNIA 95054

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Oklo Inc. [ OKLO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/27/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	03/27/2026		S		10,500	D	$51.52	12,354(1)	D

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

Explanation of Responses:

1. For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission.

Remarks:

	/s/ Richard Craig Bealmear, Attorney-in-Fact	03/30/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)