Oklo Tumbles After Klein Sells Nuclear Developer Shares

Oklo Inc. tumbled the most in five months after announcing that director Michael Klein of Churchill Capital Corp. sold $6.7 million of his shares in the developer of advanced nuclear reactors.

Oklo slumped as much as 16% Thursday, the most in intraday trading since April 4, and was down 7% to $121.97 at 11:03 a.m. in New York on Thursday. Klein sold 50,000 shares in the Santa Clara, California-based company in multiple transactions Monday, according to a filing.