Skip to main content

Oklo Inc.

OKLO
Exchange
NYSE
Industry
Electric Services
SEC CIK
0001849056

In the last 90 days, Oklo Inc. insiders filed 0 open-market purchases and 19 sales; 673 institutions reported holding it in 13F filings for Q2 2026, worth $4.27B in total; ARK Invest is the only superinvestor holding it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Oklo Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
19 filings
8 insiders, $43.4M in total
Insiders trading
8
Net value
−$43.4M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Oklo Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Oklo Inc.
NameTitleLast reported holdingLast filingFilings, past year
Renner AlexandraChief Product Officer116,390IndirectSep 16, 20266
Jansen John MDirector6,000Sep 15, 20264
Hanson JohnChief of Staff360,391Sep 15, 20263
Narayanadas VivekGeneral Counsel & Secretary8,369Sep 15, 20267
Bealmear Richard CraigChief Financial Officer461,642Sep 3, 202611
Cochran CarolineCo-Founder, COO496,483IndirectSep 2, 202616
DeWitte JacobCo-Founder, CEO529,479IndirectSep 2, 202616
Goodwin William Carroll MurphyChief Legal & Strategy Officer45,268Aug 25, 20267
Christian David ADirector–Jun 15, 20262
Kinzley RichardDirector15,754IndirectJun 15, 20264
Poneman Daniel BDirector–Jun 15, 20261
Thompson Michael N. Jr.Director–Jun 15, 20261
Peters Mark TDirector–Jun 15, 20262
Kan Derek T.Director–Jun 15, 20262
Park David GDirector–Jun 15, 20262
Schweiger Patrick JosephChief Technology Officer19,430Mar 26, 20262
Klein Michael StuartDirector, 10% Owner150,000IndirectSep 24, 20250
M. Klein Associates, Inc.Director, 10% Owner200,000IndirectJun 25, 20250
Altman Samuel H.Director3,732,479IndirectNov 21, 20240
AltC Sponsor LLCDirector, 10% Owner500,000IndirectNov 18, 20240
Wright Christopher ADirector–Jul 12, 20240

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Mar 10, 2026 (view filing)Mar 91 dayGoodwin William Carroll MurphyChief Legal & Strategy OfficerSSaleClass A Common Stock−2.82K$56.69−$159.9K−15.0%16.0K after
Mar 5, 2026 (view filing)Mar 32 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−5.84K$61.93−$361.6K−1.9%294.3K after10b5-1
Mar 4, 2026 (view filing)Mar 22 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−60.0K$62.60−$3.76M−8.1%679.0K after5 lots10b5-1
Mar 4, 2026 (view filing)Mar 22 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−140.0K$63.59−$8.90M−9.7%1.31M after7 lots10b5-1
Mar 4, 2026 (view filing)Mar 22 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−60.0K$62.60−$3.76M−8.0%688.2K after5 lots10b5-1
Mar 4, 2026 (view filing)Mar 22 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−140.0K$63.59−$8.90M−9.7%1.31M after7 lots10b5-1
Mar 3, 2026 (view filing)Mar 21 dayBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−16.3K$60.00−$975.4K−5.2%294.3K after
Feb 4, 2026 (view filing)Feb 22 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−9.73K$76.93−$748.2K−4.7%196.9K after10b5-1
Feb 4, 2026 (view filing)Feb 22 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−60.0K$74.45−$4.47M−7.4%748.2K after2 lots10b5-1
Feb 4, 2026 (view filing)Feb 22 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−140.0K$75.18−$10.5M−9.4%1.35M after10 lots10b5-1Duplicate filing
Feb 4, 2026 (view filing)Feb 22 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−60.0K$74.45−$4.47M−7.5%739.0K after2 lots10b5-1
Feb 4, 2026 (view filing)Feb 22 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−140.0K$75.18−$10.5M−9.4%1.35M after10 lots10b5-1
Jan 13, 2026 (view filing)Jan 94 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−26.7K$111.38−$2.98M−3.2%799.0K after10b5-1
Jan 13, 2026 (view filing)Jan 94 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−64.9K$112.03−$7.27M−4.5%1.39M after5 lots10b5-1
Jan 13, 2026 (view filing)Jan 94 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−26.7K$111.38−$2.98M−3.2%808.2K after10b5-1
Jan 13, 2026 (view filing)Jan 94 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−64.9K$112.03−$7.27M−4.5%1.39M after5 lots10b5-1
Jan 9, 2026 (view filing)Jan 7-82 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−93.3K$98.05−$9.14M−10.1%825.8K after8 lots10b5-1
Jan 9, 2026 (view filing)Jan 7-82 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−235.1K$99.26−$23.3M−14.3%1.41M after12 lots10b5-1
Jan 9, 2026 (view filing)Jan 7-82 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−93.3K$98.05−$9.14M−10.0%834.9K after8 lots10b5-1
Jan 9, 2026 (view filing)Jan 7-82 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−235.1K$99.26−$23.3M−14.3%1.41M after12 lots10b5-1
Jan 6, 2026 (view filing)Jan 51 dayCochran CarolineCo-Founder, COOSSaleClass A Common Stock−200.0K$90.29−$18.1M−11.9%1.48M after2 lots10b5-1Duplicate filing
Jan 6, 2026 (view filing)Jan 51 dayDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−200.0K$90.29−$18.1M−11.9%1.48M after2 lots10b5-1
Dec 23, 2025 (view filing)Dec 221 dayCochran CarolineCo-Founder, COOSSaleClass A Common Stock−840.0K$82.32−$69.1M−34.7%1.58M after12 lots10b5-1Duplicate filing
Dec 23, 2025 (view filing)Dec 221 dayDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−840.0K$82.32−$69.1M−34.7%1.58M after12 lots10b5-1
Dec 19, 2025 (view filing)Dec 17-182 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−75.0K$78.30−$5.87M−27.6%196.9K after2 lots
Dec 2, 2025 (view filing)Dec 11 dayGoodwin William Carroll MurphyChief Legal & Strategy OfficerSSaleClass A Common Stock−5.86K$88.42−$518.5K−30.1%13.6K after
Nov 20, 2025 (view filing)Nov 191 dayGoodwin William Carroll MurphyChief Legal & Strategy OfficerSSaleClass A Common Stock−11.9K$101.84−$1.22M−57.7%8.75K after
Oct 2, 2025 (view filing)Sep 302 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−300.0K$112.26−$33.7M−3.1%9.50M after8 lots10b5-1Duplicate filing
Oct 2, 2025 (view filing)Sep 302 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−300.0K$112.26−$33.7M−3.0%9.78M after8 lots10b5-1Duplicate filing
Oct 2, 2025 (view filing)Sep 302 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−300.0K$112.26−$33.7M−3.0%9.78M after8 lots10b5-1
Oct 2, 2025 (view filing)Sep 302 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−300.0K$112.26−$33.7M−3.1%9.50M after8 lots10b5-1
Sep 24, 2025 (view filing)Sep 222 daysKlein Michael StuartDirector, 10% OwnerSSaleCommon Stock, par value $0.0001 per share−50.0K$133.76−$6.69M−25.0%150.0K after2 lots
Sep 19, 2025 (view filing)Sep 17-182 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−100.0K$94.31−$9.43M−45.1%121.9K after3 lots
Sep 9, 2025 (view filing)Sep 54 daysGoodwin William Carroll MurphyChief Legal & Strategy OfficerSSaleClass A Common Stock−41.4K$70.09−$2.90M−100.0%0 after
Jul 2, 2025 (view filing)Jun 302 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−300.0K$55.20−$16.6M−2.9%10.1M after4 lots10b5-1Duplicate filing
Jul 2, 2025 (view filing)Jun 302 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−300.0K$55.20−$16.6M−3.0%9.80M after4 lots10b5-1Duplicate filing
Jul 2, 2025 (view filing)Jun 302 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−300.0K$55.20−$16.6M−3.0%9.80M after4 lots10b5-1
Jul 2, 2025 (view filing)Jun 302 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−300.0K$55.20−$16.6M−2.9%10.1M after4 lots10b5-1
Jun 25, 2025 (view filing)7:09 PM ETJun 232 daysKlein Michael Stuart and 1 otherDirectorSSaleCommon Stock, par value $0.0001 per share−50.0K$54.85−$2.74M−20.0%200.0K after3 lots
Jun 23, 2025 (view filing)5:39 PM ETJun 18-205 daysKlein Michael Stuart and 1 otherDirectorSSaleCommon Stock, par value $0.0001 per share−250.0K$63.06−$15.8M−50.0%250.0K after2 lots
Mar 31, 2025 (view filing)Mar 274 daysJansen John MDirectorPPurchaseClass A Common Stock+6.00K$24.57+$147.4KNew position6.00K after
Mar 31, 2025 (view filing)Mar 27-314 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−216.0K$23.04−$4.98M−2.0%10.9M after5 lotsDuplicate filing
Mar 31, 2025 (view filing)Mar 27-314 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−216.0K$23.04−$4.98M−2.0%10.9M after5 lots
Dec 27, 2024 (view filing)Dec 234 daysKinzley RichardDirectorPPurchaseClass A Common Stock+5.00K$19.95+$99.8KNew position5.00K after
Dec 23, 2024 (view filing)Dec 203 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−230.6K$21.62−$4.98M−1.8%12.5M after2 lotsDuplicate filing
Dec 23, 2024 (view filing)Dec 203 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−230.6K$21.62−$4.98M−1.8%12.5M after2 lots