Vivek Narayanadas - 21 Aug 2026 Form 4 Insider Report for Oklo Inc. (OKLO)

Reporting relationship: General Counsel & Secretary
Issuer ticker: OKLO
Reported as of: 21 Aug 2026
Net transaction value: -$129,809
SEC form: 4
Accepted by SEC: 25 Aug 2026, 16:07:24 UTC
Prior SEC filing: 05 Aug 2026
Next SEC filing: 27 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Richard Craig Bealmear, Attorney-in-Fact

Key filing fact

Vivek Narayanadas filed Form 4 for Oklo Inc. (OKLO) on 25 Aug 2026.

Key facts

This page summarizes Vivek Narayanadas's Form 4 filing for Oklo Inc. (OKLO).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 25 Aug 2026, 16:07.

Change

Previous filing in this sequence was filed on 05 Aug 2026.
Current net transaction value: -$129,809.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002146790 Primary reporting owner

Narayanadas Vivek

Relationship: General Counsel & Secretary
Address: C/O OKLO INC., 3190 CORONADO DRIVE, SANTA CLARA
Signature: /s/ Richard Craig Bealmear, Attorney-in-Fact
Signature date: 25 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

OKLO transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +4,806
Change %: +77%
Price
Shares after: 11,086
Date: 21 Aug 2026
Ownership: Direct
Footnotes: F1

OKLO transaction

Class A Common Stock

Sale

Transaction value: $129,809
Shares: -3,264
Change %: -29%
Price: $39.77
Shares after: 7,822
Date: 24 Aug 2026
Ownership: Direct
Footnotes: F2

OKLO holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,000
Date: 21 Aug 2026
Ownership: Joint account with spouse

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

OKLO transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -4,806
Change %: -26%
Price: $0.000000^*
Shares after: 13,449
Date: 21 Aug 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 4,806
Exercise price
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock.

Footnote F2

Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of the RSUs. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

Footnote F3

On February 3, 2025, the Reporting Person was granted 36,508 RSUs, vesting as to 20% of the underlying shares on February 3, 2026 and continuing to vest thereafter in 24 substantially equal monthly installments. On August 21, 2026, 4,806 RSUs vested.