Oklo Inc. (OKLO)
NYSE: OKLO · Electric Services · Santa Clara, CA · filing with the SEC since 2021
Who owns Oklo Inc.
As filed with the SECHolders of 5% or more
1
Jacob DeWitte holds 11.1% of Class A Common Stock, par value $0.0001 per share, as its SCHEDULE 13D/A filed Jul 6, 2026 says.
Directors and officers
19
report now, of 28 people on the record since 2021. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 1 named at left.
Holders of 5% or moreshare of the class, as filed
Jacob DeWitte
SCHEDULE 13D/A · filed Jul 6, 2026 · Class A Common Stock, par value $0.0001 per share · 12.2% in Apr 21, 2026
Samuel H. Altman
SCHEDULE 13D/A · filed Apr 4, 2025 · Class A Common Stock, par value $0.0001 per share · reported falling below 5%, from 8.2% in Dec 23, 2024
Zachary Bogue
SCHEDULE 13G/A · filed Feb 14, 2025 · Class A Common Stock, par value $0.0001 · reported falling below 5%
Blackrock, Inc.
SCHEDULE 13G/A · filed Jul 29, 2026 · Class A Stock · reported falling below 5%, from 9.2% in Jan 21, 2026
M. Klein Associates, Inc.
SCHEDULE 13G/A · filed Feb 14, 2025 · Class A Common Stock, par value $0.0001 per share · reported falling below 5%
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%, from 7.85% in Oct 31, 2025
Encompass Capital Advisors LLC
SCHEDULE 13G/A · filed Feb 14, 2025 · Shares of Class A common stock, par value $0.0001 per share · reported falling below 5%
Mithril II LP
SCHEDULE 13G/A · filed Feb 14, 2025 · Class A Common Stock, par value $0.0001 per share · reported falling below 5%
What OKLO reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Atomic Alchemy, Inc.
A company bought · acquisition · Feb 2025 · owns, named in the 10-K filed Mar 17, 2026
3 subsidiaries in 1 country, from the list filed with the 10-K filed Mar 24, 2025.
Insider tradesForm 4
275sales
0purchases
207sales on a scheduled plan
10people selling
$486Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 10, 2025 to Nov 10, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 10, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window10 of 28 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Dewitte Jacob | Co-Founder, CEO | 115 | $229M | 94 | 0 | $0 |
| Cochran Caroline | Co-Founder, COO | 115 | $229M | 94 | 0 | $0 |
| Bealmear Richard Craig | Chief Financial Officer | 16 | $22.4M | 10 | 0 | $0 |
| Goodwin William Carroll Murphy | Chief Strategy Officer | 7 | $3.6M | 0 | 0 | $0 |
| Jansen John M | director | 2 | $800,000 | 0 | 0 | $0 |
| Schweiger Patrick Joseph | Chief Technology Officer | 1 | $300,000 | 0 | 0 | $0 |
| Narayanadas Vivek | General Counsel & Secretary | 10 | $300,000 | 9 | 0 | $0 |
| Renner Alexandra | Chief Product Officer | 5 | $200,000 | 0 | 0 | $0 |
| Kinzley Richard | director | 1 | $200,000 | 0 | 0 | $0 |
| Hanson John | Chief of Staff | 3 | $100,000 | 0 | 0 | $0 |