Oklo Inc. (OKLO) experienced a significant after-hours plunge of 7.11% following reports of substantial insider selling by the company's top executives.

The sharp decline came after the market closed, as investors reacted to disclosures showing both CEO Jacob DeWitte and COO Caroline Cochran disposing of significant amounts of company shares. DeWitte sold shares worth approximately $14.17 million, while Cochran disposed of shares valued at around $4.01 million.

Such large-scale insider selling by key executives often signals to the market potential concerns about current stock valuation or future prospects, leading to negative investor sentiment and selling pressure in after-hours trading.