Man Arrested After Molotov Cocktail Attack on OpenAI CEO Sam Altman's San Francisco Home

San Francisco police arrested a 20-year-old man on Friday after he threw a Molotov cocktail at the home of OpenAI chief executive Sam Altman in the early hours of the morning, then threatened to burn down the company's headquarters less than an hour later. Officers responded to Altman's residence in the North Beach neighborhood shortly after 4 a.m. local time following reports of an arson investigation, where they found that an unknown man had thrown an incendiary device at the property, setting an exterior gate on fire before fleeing on foot. No injuries were reported and damage was described as minimal. Police subsequently received a call about a man threatening to burn a building in a separate part of the city, identified the individual as the same suspect, and detained him. The San Francisco Police Department posted details of the arrest on social media but did not publicly identify the suspect. Charges had not yet been filed as of Friday afternoon.

OpenAI confirms both incidents, praises police response OpenAI confirmed in a statement that the targeted residence belongs to Altman and that threats were also directed at the company's San Francisco headquarters. A company spokesperson, identified by Wired as Kayla Wood, confirmed the events and said no one was hurt.

„Earlier this morning, someone threw a Molotov cocktail at Sam Altman's house and also made threats against our San Francisco headquarters. Fortunately, no one was injured.” — Kayla Wood via Wired

The company also sent an internal memo to employees describing the sequence of events. According to that memo, quoted by Wired, the device was thrown toward the property at approximately 3:45 a.m. Pacific Time, landed nearby, and extinguished, with only minimal damage recorded. Shortly after, an individual matching the suspect's description was contacted by security outside OpenAI's headquarters building in the Mission Bay neighborhood, where he made threatening statements. The memo noted it was unclear whether Altman was at home at the time of the attack. OpenAI stated it is cooperating with police in the ongoing investigation.

Attack lands amid OpenAI's military contract controversy and Musk lawsuit The incident took place against a backdrop of mounting pressure on OpenAI from multiple directions. The company recently drew criticism after agreeing with the U.S. Department of Defense to allow its technology to be used in classified military operations, a deal that came into focus after rival company Anthropic was designated a supply chain risk by the Pentagon following its refusal to remove restrictions on its technology's use for autonomous weapons. Activists reportedly left chalk messages near the offices of both companies urging OpenAI employees to oppose the agreement. Separately, Elon Musk is pursuing a lawsuit seeking the removal of Sam Altman as chief executive and Greg Brockman, co-founder and president of OpenAI, from his leadership role. According to court filings cited by HotNews.ro, Musk's lawyers stated that the lawsuit would seek a ruling removing Altman from the nonprofit board and stripping both Altman and Brockman of their positions in the commercial entity. The case was set to come before a court later in April 2026. Musk originally sued OpenAI in 2024, claiming the organization had abandoned its founding commitment to remain a nonprofit and had misled him into donating funds to the company.

„The plaintiff will seek a decision by which Altman is removed from the position of director within the OpenAI nonprofit board and by which both Altman and Brockman are removed from the leadership positions of the OpenAI commercial entity.” — Elon Musk's lawyers via HotNews.ro

Previous threats at OpenAI offices signal a pattern of hostility Friday's attack was not the first time OpenAI's San Francisco presence had been targeted. According to the Observador, the company was forced to close its San Francisco office in November following a threat made by an activist, and in February 2025 arrests were made after protesters attempted to block access to the company's offices in the city. The broader climate of public skepticism toward artificial intelligence companies was illustrated by a recent NBC News poll cited in multiple source articles, which found that artificial intelligence is viewed less favorably than the U.S. Immigration and Customs Enforcement among those surveyed. OpenAI and Anthropic together are valued at over one trillion dollars, according to HotNews.ro, reflecting the enormous commercial stakes surrounding the sector even as public and activist opposition grows. Sam Altman, 40, has served as chief executive of OpenAI since 2019. The San Francisco Police Department said it had established probable cause to make the arrest but released no further details about the investigation as of Friday evening.

OpenAI was founded in 2015 as a nonprofit research organization. It has since restructured into a hybrid entity combining a for-profit public benefit corporation with a nonprofit foundation. The company became a global household name following the release of ChatGPT. Anthropic, a rival AI firm, was founded in 2021 by former OpenAI members including Dario Amodei and Daniela Amodei. Both companies are headquartered in San Francisco and are central figures in the global competition over large language model development.

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