Oklo (OKLO) reported a Q3 loss Friday of $0.22 per diluted share, widening from a loss of $0.20 a year earlier.
Analysts surveyed by FactSet expected a loss of $0.27.
Revenue for the quarter ended Sept. 30 was $1.9 million. No revenue was reported a year earlier.
Analysts surveyed by FactSet expected $1 million.
Shares of the company rose more than 10% pre-bell Friday.