person · Reporting owner

Jansen John M

Disclosed activity across 1 company

Tapewire entity: 38244
SEC CIK: 0002021774

Reported relationships

Latest disclosed role at each company.

Company	Last reported as	Report date	Published
Oklo Inc.OKLO · Entity 593	Director	September 14, 2026	September 15, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Oklo Inc.

Report date September 14, 2026 · Filed September 15, 2026

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Class A Common StockSEC Table I · non-derivative	Direct	6,000	Reported balance After 2026-09-14 transaction · row 1 Account or security details depend on footnotes; rows are not merged. 1 source row Row 1 · 2026-09-14 · Sale · Disposed 6,354 · Balance 6,000 F1: For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission.

Filing footnotes · ownership attribution and instrument terms

F1: For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission.

Transaction history

JSON API

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
September 14, 2026 Filed Sep 15, 2026 20:27 UTC	Oklo Inc. OKLO · Entity 593	SaleClass A Common Stock	6,354	$36.67	$233,001.18	Disclosure SEC source: 0002021774-26-000011 · wk-form4_1789504046.xml · nonDerivative · entry 1 Jansen John M · CIK 0002021774 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,000 F1 · balance_after: For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission. Read SEC document
June 11, 2026 Filed Jun 15, 2026 20:43 UTC	Oklo Inc. OKLO · Entity 593	GrantRestricted Stock Units · Derivative	3,213	$0.00	$0.00	Disclosure SEC source: 0002021774-26-000009 · wk-form4_1781556215.xml · derivative · entry 1 Jansen John M · CIK 0002021774 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,213 Underlying: Class A Common Stock · 3,213 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. F2 · derivative.exercise_date: The restricted stock units vest in full on June 3, 2027. F2 · derivative.expiration_date: The restricted stock units vest in full on June 3, 2027. Read SEC document
March 27, 2026 Filed Mar 30, 2026 21:57 UTC	Oklo Inc. OKLO · Entity 593	SaleClass A Common Stock	10,500	$51.52	$540,960.00	Disclosure SEC source: 0002021774-26-000007 · wk-form4_1774906989.xml · nonDerivative · entry 1 Jansen John M · CIK 0002021774 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 12,354 F1 · balance_after: For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission. Read SEC document
March 06, 2026 Filed Mar 10, 2026 20:12 UTC	Oklo Inc. OKLO · Entity 593	Exercise / conversionRestricted Stock Units · Derivative	16,854	$0.00	$0.00	Disclosure SEC source: 0002021774-26-000002 · wk-form4_1773173543.xml · derivative · entry 2 Jansen John M · CIK 0002021774 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Class A Common Stock · 16,854 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Class A Common Stock. F3 · derivative.exercise_date: The restricted stock units vested in full on May 9, 2025. F4 · derivative.expiration_date: The restricted stock units vest in full on May 9, 2025. Read SEC document
March 06, 2026 Filed Mar 10, 2026 20:12 UTC	Oklo Inc. OKLO · Entity 593	Exercise / conversionClass A Common Stock	16,854	$58.25	$981,745.50	Disclosure SEC source: 0002021774-26-000002 · wk-form4_1773173543.xml · nonDerivative · entry 1 Jansen John M · CIK 0002021774 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,854 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · balance_after: For more information about the equity of the Issuer held by the Reporting Person, please see the Issuer's most recent definitive proxy statement filed with the Securities and Exchange Commission. Read SEC document
March 27, 2025 Filed Apr 1, 2025 00:48 UTC	Oklo Inc. OKLO · Entity 593	PurchaseClass A Common Stock	6,000	$24.57	$147,411.60	Disclosure SEC source: 0001104659-25-030072 · tm2510963-2_4seq1.xml · nonDerivative · entry 1 Jansen John M · CIK 0002021774 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,000 Read SEC document
July 10, 2024 Filed Jul 12, 2024 20:32 UTC	Oklo Inc. OKLO · Entity 593	GrantRestricted Stock Units · Derivative	16,854	$0.00	$0.00	Disclosure SEC source: 0001104659-24-079565 · tm2419306-4_4seq1.xml · derivative · entry 1 Jansen John M · CIK 0002021774 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 16,854 Underlying: Class A Common Stock · 16,854 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. F2 · derivative.exercise_date: The restricted stock units vest in full on May 9, 2025. F2 · derivative.expiration_date: The restricted stock units vest in full on May 9, 2025. Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.