Anthropic Files for IPO, Revealing Rapid Revenue Growth, Losses and Founder Control Plan

Anthropic filed for an initial public offering on Monday after weeks of leaked S-1s, setting up one of the most closely watched U.S. public debuts in AI. The company plans to list under the ticker “ANT.” Anthropic has not yet disclosed how much it hopes to raise or its proposed share price, leaving key deal terms still unresolved.

Anthropic recorded $16.3 billion in revenue for the first half of 2026, up from $1.2 billion in the same period last year, according to its latest SEC filing. The company reported a $693 million operating loss, improved from $2.1 billion in operating losses in the first half of 2025. Its net loss reached $80.7 billion, largely driven by noncash accounting adjustments tied to convertible debt, and the company says it “may not achieve or sustain profitability in the future.”

The filing gives a clearer look at Anthropic’s enterprise business. As of the end of September, the company had more than 11,900 customers spending $100,000 or more annually, 1,900 customers spending $1 million or more, and about 250 customers spending $10 million or more. For readers tracking the IPO, those customer tiers are central to understanding the scale and durability of Anthropic’s commercial momentum.

Anthropic’s governance structure would allow its seven co-founders to maintain control after the company goes public through a “Founder LLC” that collectively controls 50.1% of shareholder voting power. The company says the structure is designed to preserve its AI safety mission, while its Long-Term Benefit Trust will have authority to appoint most of the board. The setup is controversial because voting power is not proportional to the founders’ economic ownership, meaning public shareholders would have limited practical control over the company.