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Major Oklo Insider Dumps Quarter Million Shares Amid Nuclear Tech Boom

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Director Michael Klein and M. Klein Associates Report Significant Stock Sales at Oklo

Two significant insider transactions were reported at Oklo (OKLO) by Director Michael Klein and related entities:

  • On June 18, 2025, sold 100,000 shares at an average price of $63.53 per share
  • On June 20, 2025, disposed of 150,000 shares at an average price of $62.74 per share

The shares were held through two entities: M. Klein Associates and Allies Capital Corp, both controlled by Michael Klein. Following these transactions, the reporting persons retain beneficial ownership of 250,000 shares. The sales were executed through multiple transactions at varying prices, with the first batch ranging from $63.50-$63.64 and the second from $61.92-$63.51. This significant insider selling activity may warrant investor attention given Klein's position as both Director and 10% owner through his affiliated entities.

Positive

  • None.

Negative

  • Director and 10% owner Michael Klein sold a total of 250,000 shares over two days for approximately $15.8M, reducing his indirect holdings through controlled entities by 38.5% from 650,000 to 400,000 shares
  • The large discretionary sales (non-10b5-1) by a significant insider and board member could signal reduced confidence in the company's near-term prospects
Insider Klein Michael Stuart, M. Klein Associates, Inc.
Role Director | Director, 10% Owner
Sold 250,000 shs ($15.76M)
Type Security Shares Price Value
Sale Common Stock, par value $0.0001 per share 150,000 $62.7447 $9.41M
Sale Common Stock, par value $0.0001 per share 100,000 $63.5257 $6.35M
Holdings After Transaction: Common Stock, par value $0.0001 per share — 250,000 shares (Indirect, See footnote)
Footnotes (1)
  1. 212,900 of the shares reported (the "Shares") are held of record by M. Klein Associates, Inc. and 187,100 of the Shares are held of record by Allies Capital Corp. Michael Klein is the controlling stockholder of M. Klein Associates, Inc.. Michael Klein is the sole stockholder of Allies Capital Corp. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.5000 to $63.6400, inclusive. The reporting person undertakes to provide to the registrant, any security holder of the registrant, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. 212,900 of the Shares are held of record by M. Klein Associates, Inc. and 37,100 of the Shares are held of record by Allies Capital Corp. Michael Klein is the controlling stockholder of M. Klein Associates, Inc.. Michael Klein is the sole stockholder of Allies Capital Corp. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.920 to $63.512, inclusive. The reporting person undertakes to provide to the registrant, any security holder of the registrant, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.
Form 4 Insider Transactions: What Each Field Means →
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*
Klein Michael Stuart
(Last) (First) (Middle)
640 FIFTH AVENUE, 14TH 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 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
06/18/2025
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
Common Stock, par value $0.0001 per share 06/18/2025 S 100,000 D $63.5257(1) 400,000(1) I See footnote(1)
Common Stock, par value $0.0001 per share 06/20/2025 S 150,000 D $62.7447(2) 250,000(2) I See footnote(2)
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
1. Name and Address of Reporting Person*
Klein Michael Stuart
(Last) (First) (Middle)
640 FIFTH AVENUE, 14TH FLOOR
(Street)
NEW YORK NY 10019
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
X Director 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
M. Klein Associates, Inc.
(Last) (First) (Middle)
640 FIFTH AVENUE, 14TH 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. 212,900 of the shares reported (the "Shares") are held of record by M. Klein Associates, Inc. and 187,100 of the Shares are held of record by Allies Capital Corp. Michael Klein is the controlling stockholder of M. Klein Associates, Inc.. Michael Klein is the sole stockholder of Allies Capital Corp. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.5000 to $63.6400, inclusive. The reporting person undertakes to provide to the registrant, any security holder of the registrant, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.
2. 212,900 of the Shares are held of record by M. Klein Associates, Inc. and 37,100 of the Shares are held of record by Allies Capital Corp. Michael Klein is the controlling stockholder of M. Klein Associates, Inc.. Michael Klein is the sole stockholder of Allies Capital Corp. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.920 to $63.512, inclusive. The reporting person undertakes to provide to the registrant, any security holder of the registrant, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.
/s/ Michael Klein 06/23/2025
M. Klein Associates, Inc. /s/ Jay Taragin Name: Jay Taragin Title: Authorized Person 06/23/2025
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

How many OKLO shares did Director Michael Klein sell in June 2025?

Director Michael Klein sold a total of 250,000 OKLO shares across two transactions: 100,000 shares on June 18, 2025, at an average price of $63.5257, and 150,000 shares on June 20, 2025, at an average price of $62.7447.

What was the price range of OKLO stock sales by Michael Klein on June 18, 2025?

On June 18, 2025, the OKLO shares were sold in multiple transactions at prices ranging from $63.5000 to $63.6400 per share, with a weighted average price of $63.5257.

How many OKLO shares does Michael Klein retain after the June 2025 transactions?

After the reported transactions, Michael Klein retained beneficial ownership of 250,000 OKLO shares, held indirectly through M. Klein Associates, Inc. and Allies Capital Corp.

Which entities hold Michael Klein's indirect ownership in OKLO stock?

Michael Klein's OKLO shares are held through two entities: M. Klein Associates, Inc., where he is the controlling stockholder, and Allies Capital Corp., where he is the sole stockholder.

What positions does Michael Klein hold at OKLO as of June 2025?

According to the Form 4 filing, Michael Klein serves as a Director of OKLO Inc. and through his controlled entities maintains a position as a 10% Owner of the company.