Oklo splits first atoms in test reactor as SMR developer advances toward commercialization

Oklo, a publicly traded small-modular-reactor startup, achieved first criticality in its test reactor, marking a technical milestone for the emerging SMR sector backed by significant venture and institutional capital.

First covered Aug 6, 2026 · 5:13 AM PT · 1 article

Oklo splits first atoms in test reactor as SMR developer advances toward commercialization — Image via canarymedia.com

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5h Canary Media Nuclear startup Oklo splits its first atoms in test reactor — Oklo , a publicly traded small-modular-reactor firm backed by OpenAI chief Sam Altman, has become one of the highest-profile companies working on…

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investingnews.com Oklo's Groves Reactor Achieves First Criticality in Under a Year | INN

ans.org The deadline arrives: Checking in on the Reactor Pilot Program -- ANS / Nuclear Newswire

stocktitan.net Oklo's Groves Is First DOE Pilot Reactor to Reach Criticality on Private Land

finance.yahoo.com I'm Calling It: Oklo Will Be a Very Different Stock After July for 1 Reason

Appeared in: 2026-08-06 (#3)

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Oklo splits first atoms in test reactor as SMR developer advances toward commercialization

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