Police arrest 20-year-old after Molotov cocktail thrown at Sam Altman’s San Francisco home

In short: A 20-year-old man was arrested in the early hours of Friday, 10 April 2026, after throwing a Molotov cocktail at the San Francisco home of OpenAI chief executive Sam Altman, then travelling across the city to OpenAI’s offices on Third Street and threatening to burn the building down. No one was injured. The suspect’s name has not been released, charges are pending, and no motive has been publicly disclosed.

The attack at Russian Hill

At around 3:40 a.m. on Friday, a person approached the metal gate of 855 Chestnut Street, a 5,400-square-foot home on San Francisco’s Russian Hill that Sam Altman purchased in January 2025, and threw a bottle containing a flaming rag at it. The improvised incendiary device set the gate alight. Security guards at the property extinguished the fire before it spread. No one was hurt. The incident was captured ...