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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 29 sales; 675 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
29 filings
8 insiders, $23.0M in total
Insiders trading
8
Net value
−$23.0M
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
Narayanadas VivekGeneral Counsel & Secretary12,370Nov 10, 202614
Bealmear Richard CraigChief Financial Officer472,630Nov 4, 202613
DeWitte JacobCo-Founder, CEO318,039IndirectNov 4, 202617
Cochran CarolineCo-Founder, COO351,533IndirectNov 4, 202617
Hanson JohnChief of Staff361,277Nov 2, 20266
Renner AlexandraChief Product Officer593,750Nov 2, 20269
Goodwin William Carroll MurphyChief Strategy Officer46,787Sep 29, 20268
Jansen John MDirector6,000Sep 15, 20264
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
Nov 4, 2026 (view filing)4:18 PM ETNov 22 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−16.7K$25.55−$427.4K−3.5%467.3K after10b5-1
Nov 4, 2026 (view filing)4:17 PM ETNov 22 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−40.0K$24.64−$985.6K−10.2%351.5K after3 lots10b5-1Duplicate filing
Nov 4, 2026 (view filing)4:17 PM ETNov 22 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−40.0K$24.64−$985.6K−11.2%318.0K after3 lots10b5-1Duplicate filing
Nov 4, 2026 (view filing)4:16 PM ETNov 22 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−40.0K$24.64−$985.6K−11.2%318.0K after3 lots10b5-1
Nov 4, 2026 (view filing)4:16 PM ETNov 22 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−40.0K$24.64−$985.6K−10.2%351.5K after3 lots10b5-1
Nov 2, 2026 (view filing)4:30 PM ETOct 294 daysHanson JohnChief of StaffSSaleClass A Common Stock−1.03K$26.71−$27.6K−0.3%361.3K after
Nov 2, 2026 (view filing)4:28 PM ETOct 294 daysRenner AlexandraChief Product OfficerSSaleClass A Common Stock−1.07K$26.71−$28.5K−0.2%593.8K after
Oct 22, 2026 (view filing)4:22 PM ETOct 202 daysNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−1.02K$26.50−$27.1K−8.7%10.7K after10b5-1
Oct 20, 2026 (view filing)4:26 PM ETOct 191 dayNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−2.36K$27.63−$65.2K−13.0%15.8K after10b5-1
Oct 15, 2026 (view filing)4:22 PM ETOct 141 dayRenner AlexandraChief Product OfficerSSaleClass A Common Stock−688$30.75−$21.2K−0.1%478.4K after
Oct 13, 2026 (view filing)4:39 PM ETOct 94 daysNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−364$34.69−$12.6K−4.0%8.77K after10b5-1
Oct 8, 2026 (view filing)4:15 PM ETOct 62 daysNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−288$37.29−$10.7K−3.3%8.45K after10b5-1
Oct 6, 2026 (view filing)4:07 PM ETOct 51 dayNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−649$35.93−$23.3K−6.9%8.73K after
Oct 5, 2026 (view filing)4:02 PM ETOct 14 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−40.0K$36.64−$1.47M−10.0%358.0K after10b5-1
Oct 5, 2026 (view filing)4:02 PM ETOct 14 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−80.0K$36.45−$2.92M−14.4%476.5K after3 lots10b5-1
Oct 5, 2026 (view filing)4:01 PM ETOct 14 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−40.0K$36.19−$1.45M−9.3%391.5K after10b5-1
Oct 5, 2026 (view filing)4:01 PM ETOct 14 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−80.0K$36.67−$2.93M−13.6%509.5K after3 lots10b5-1
Oct 5, 2026 (view filing)4:01 PM ETOct 14 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−16.5K$36.87−$607.5K−3.4%461.6K after10b5-1
Sep 29, 2026 (view filing)4:26 PM ETSep 281 dayHanson JohnChief of StaffSSaleClass A Common Stock−1.10K$37.39−$41.1K−0.3%361.4K after
Sep 29, 2026 (view filing)4:25 PM ETSep 281 dayRenner AlexandraChief Product OfficerSSaleClass A Common Stock−1.10K$37.39−$41.1K−0.2%477.6K after
Sep 29, 2026 (view filing)4:24 PM ETSep 281 dayGoodwin William Carroll MurphyChief Strategy OfficerSSaleClass A Common Stock−1.77K$37.39−$66.4K−3.7%46.8K after
Sep 15, 2026 (view filing)4:27 PM ETSep 141 dayJansen John MDirectorSSaleClass A Common Stock−6.35K$36.67−$233.0K−51.4%6.00K after
Sep 10, 2026 (view filing)4:34 PM ETSep 91 dayNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−365$43.31−$15.8K−4.3%8.16K after10b5-1
Sep 9, 2026 (view filing)4:28 PM ETSep 81 dayNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−238$42.06−$10.0K−2.7%8.52K after10b5-1
Sep 8, 2026 (view filing)4:24 PM ETSep 44 daysNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−538$39.88−$21.5K−6.2%8.07K after10b5-1
Sep 3, 2026 (view filing)4:24 PM ETSep 12 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−16.4K$38.76−$636.8K−3.5%456.0K after10b5-1
Sep 3, 2026 (view filing)4:23 PM ETSep 12 daysRenner AlexandraChief Product OfficerSSaleClass A Common Stock−1.93K$38.40−$74.1K−0.4%475.0K after
Sep 2, 2026 (view filing)4:31 PM ETSep 11 dayCochran CarolineCo-Founder, COOSSaleClass A Common Stock−40.0K$38.66−$1.55M−9.1%398.0K after
Sep 2, 2026 (view filing)4:31 PM ETSep 11 dayCochran CarolineCo-Founder, COOSSaleClass A Common Stock−80.0K$38.56−$3.08M−13.9%496.5K after4 lots
Sep 2, 2026 (view filing)4:29 PM ETSep 11 dayDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−40.0K$38.40−$1.54M−8.5%431.5K after
Sep 2, 2026 (view filing)4:29 PM ETSep 11 dayDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−80.0K$38.69−$3.10M−13.1%529.5K after4 lots
Aug 27, 2026 (view filing)4:34 PM ETAug 252 daysNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−223$40.80−$9.10K−2.9%7.60K after10b5-1
Aug 25, 2026 (view filing)4:10 PM ETAug 241 dayRenner AlexandraChief Product OfficerSSaleClass A Common Stock−557$39.77−$22.2K−0.1%472.8K after
Aug 25, 2026 (view filing)4:09 PM ETAug 241 dayHanson JohnChief of StaffSSaleClass A Common Stock−539$39.77−$21.4K−0.1%359.4K after
Aug 25, 2026 (view filing)4:08 PM ETAug 241 dayGoodwin William Carroll MurphyChief Legal & Strategy OfficerSSaleClass A Common Stock−11.6K$39.77−$461.0K−20.4%45.3K after
Aug 25, 2026 (view filing)4:07 PM ETAug 241 dayNarayanadas VivekGeneral Counsel & SecretarySSaleClass A Common Stock−3.26K$39.77−$129.8K−29.4%7.82K after10b5-1
Aug 5, 2026 (view filing)4:07 PM ETAug 32 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−16.5K$38.80−$638.3K−3.5%450.3K after10b5-1
Aug 5, 2026 (view filing)4:06 PM ETAug 32 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−40.0K$41.35−$1.65M−8.4%438.0K after10b5-1
Aug 5, 2026 (view filing)4:06 PM ETAug 32 daysCochran CarolineCo-Founder, COOSSaleClass A Common Stock−80.0K$40.63−$3.25M−13.4%516.5K after5 lots10b5-1
Aug 5, 2026 (view filing)4:05 PM ETAug 32 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−40.0K$41.68−$1.67M−7.8%471.5K after10b5-1
Aug 5, 2026 (view filing)4:05 PM ETAug 32 daysDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−80.0K$40.46−$3.24M−12.7%549.5K after5 lots10b5-1
Jul 6, 2026 (view filing)4:14 PM ETJul 15 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−16.3K$52.63−$859.0K−3.5%444.6K after10b5-1
Jul 2, 2026 (view filing)4:06 PM ETJul 11 dayDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−60.0K$52.80−$3.17M−10.5%511.5K after
Jul 2, 2026 (view filing)4:06 PM ETJul 11 dayDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−140.0K$52.98−$7.42M−19.7%569.5K after3 lots
Jul 2, 2026 (view filing)4:05 PM ETJul 11 dayCochran CarolineCo-Founder, COOSSaleClass A Common Stock−60.0K$52.30−$3.14M−11.2%478.0K after
Jul 2, 2026 (view filing)4:05 PM ETJul 11 dayCochran CarolineCo-Founder, COOSSaleClass A Common Stock−140.0K$53.20−$7.45M−20.7%536.5K after3 lots
Jun 3, 2026 (view filing)Jun 12 daysBealmear Richard CraigChief Financial OfficerSSaleClass A Common Stock−73.1K$68.42−$5.00M−14.3%438.7K after3 lots10b5-1
Jun 2, 2026 (view filing)Jun 11 dayCochran CarolineCo-Founder, COOSSaleClass A Common Stock−60.0K$66.82−$4.01M−10.0%538.0K after4 lots10b5-1
Jun 2, 2026 (view filing)Jun 11 dayCochran CarolineCo-Founder, COOSSaleClass A Common Stock−140.0K$68.92−$9.65M−19.5%576.5K after4 lots10b5-1
Jun 2, 2026 (view filing)Jun 11 dayDeWitte JacobCo-Founder, CEOSSaleClass A Common Stock−60.0K$68.29−$4.10M−9.5%571.5K after10b5-1