Drag a card by its title · ⚙ to size, swap or remove

Who

John M. Jansen

Director

Company insider

Files Form 4 as: Director, Oklo.

Every Form 4 they filed

In numbers

Trades disclosed: 12
Buys: 1
Sells: 2
Bought: $147K
Sold: $1.5M
Companies: 1
Companies where not an officer: 1
First trade: 10 Jul 2024
Last trade: 14 Sep 2026
Last filed: 15 Sep 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies

OKLO OkloDirector · Nuclear Technology · last 14 Sep 20261 buy · 2 sells

Activity over time

1 Mar 2025 – 1 Oct 2026

Buys above the line, sells below, each month.

Every trade

Traded	Company	What	Amount
14 Sep 2026filed 15 Sep 2026	OKLO OkloNuclear Technology	SEC FORM 4 Sold	$233K6,354 at $36.67	filing
14 Sep 2026filed 15 Sep 2026	OKLO OkloNuclear Technology	SEC FORM 4 Sold	$233K6,354 at $36.67	filing
11 Jun 2026filed 15 Jun 2026	OKLO Oklooption or derivative · Nuclear Technology	SEC FORM 4 Code A	—3,213 at $0.00	filing
11 Jun 2026filed 15 Jun 2026	OKLO Oklooption or derivative · Nuclear Technology	SEC FORM 4 Code A	—3,213 at $0.00	filing
27 Mar 2026filed 30 Mar 2026	OKLO OkloNuclear Technology	SEC FORM 4 Sold	$541K10,500 at $51.52	filing
27 Mar 2026filed 30 Mar 2026	OKLO OkloNuclear Technology	SEC FORM 4 Sold	$541K10,500 at $51.52	filing
6 Mar 2026filed 10 Mar 2026	OKLO OkloNuclear Technology	SEC FORM 4 Code M	$982K16,854 at $58.25	filing
6 Mar 2026filed 10 Mar 2026	OKLO Oklooption or derivative · Nuclear Technology	SEC FORM 4 Code M	—16,854 at $0.00	filing
6 Mar 2026filed 10 Mar 2026	OKLO Oklooption or derivative · Nuclear Technology	SEC FORM 4 Code M	—16,854 at $0.00	filing
6 Mar 2026filed 10 Mar 2026	OKLO OkloNuclear Technology	SEC FORM 4 Code M	$982K16,854 at $58.25	filing
27 Mar 2025filed 31 Mar 2025	OKLO OkloNuclear Technology	SEC FORM 4 Bought	$147K6,000 at $24.57	filing
10 Jul 2024filed 12 Jul 2024	OKLO Oklooption or derivative · Nuclear Technology	SEC FORM 4 Code A	—16,854 at $0.00	filing

News

Oklo (NYSE: OKLO) And NuScale (NYSE: SMR) Crash Over 80% As SMR Hype Gives Way To Hard RealityOKLO · foreignpolicyjournal.com · 17 Oct 2026 Oklo (NYSE: OKLO) Launches Fresh $1 Billion Stock Sale As Shareholder Dilution Reaches 58% Since SPAC DebutOKLO · foreignpolicyjournal.com · 15 Oct 2026 Oklo (NYSE:OKLO) General Counsel Vivek Narayanadas Sells 364 Shares of StockOKLO · dailypolitical.com · 14 Oct 2026

0 headlines in the last 90 days name John M. Jansen; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Industrials3

Buys in green, sells in red, by the company’s sector.

Related people

Alexandra RennerChief Product Officer · Chief Product Officer at Oklo, filing Form 4 there in the last year

John HansonChief of Staff · Chief of Staff at Oklo, filing Form 4 there in the last year

Vivek NarayanadasGeneral Counsel & Secretary · General Counsel & Secretary at Oklo, filing Form 4 there in the last year

Jacob DeWitteCo-Founder, CEO · Co-Founder, CEO at Oklo, filing Form 4 there in the last year

Richard Craig BealmearChief Financial Officer · Chief Financial Officer at Oklo, filing Form 4 there in the last year

Caroline CochranCo-Founder, COO · Also traded OKLO in the last 90 days

William Carroll Murphy GoodwinChief Strategy Officer · Also traded OKLO in the last 90 days