Cerebras IPO Filed After Expanded OpenAI Deal
Cerebras IPO filing on April 17, 2026 follows an expanded OpenAI commitment and could boost IPO demand while supporting a higher valuation for the IPO.

KEY TAKEAWAYS
- Filed S-1 on April 17, 2026 reviving its IPO after an October 2025 withdrawal.
- Targets a $35.0 billion valuation and plans to raise more than $3.0 billion in the IPO.
- OpenAI expanded its commitment to over $20.0 billion and fronted about $1.0 billion that alters customer mix.
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Cerebras Systems filed S-1 paperwork for a U.S. initial public offering on April 17, 2026, aiming to leverage an expanded OpenAI commitment that supports multi-year compute sales and changes the company’s customer mix.
IPO Filing and Valuation
The filing revives Cerebras’s public-offering effort, which was withdrawn in October 2025 after regulatory scrutiny over customer concentration. The AI chipmaker targets a $35 billion valuation and plans to raise more than $3 billion in the IPO.
That valuation implies a 43.0% premium to the $8.1 billion mark from a September 2025 Series G round and a 52.0% premium to a $23 billion valuation from a February 2026 Series H round. Prior private financing included a $1.1 billion Series G in September 2025; total private funding is cited at roughly $715–720 million across seven rounds.
OpenAI Deal and Regulatory Impact
OpenAI revised its commitment to spend more than $20 billion on Cerebras servers and compute over three years, doubling the initial January 2026 agreement of about $10 billion. The deal includes warrants that could give OpenAI up to a 10.0% equity stake if cumulative spending reaches $30 billion.
Part of the arrangement was recorded as a working-capital deposit, with OpenAI fronting roughly $1 billion toward data-center construction, which Cerebras booked as a balance-sheet asset. OpenAI and Amazon are confirmed as major customers, and the company has partnered with Oracle to deliver its systems through cloud services.
Previously, G42 accounted for 87.0% of Cerebras’s revenue in the first half of 2024, triggering a national-security review that contributed to the earlier IPO withdrawal. CEO Andrew Feldman said in May 2025 the company obtained clearance to sell shares to G42.
Executives have cited the expanded OpenAI partnership as the reason for restarting the IPO and setting the higher target valuation, saying the agreement underwrites multi-year demand and reduces the customer-concentration risks that complicated the prior offering.





