Cerebras Refiles for IPO at $23 Billion, Backed by OpenAI

Cerebras filed a new S-1 last Friday at a $23 billion valuation, its second IPO attempt after withdrawing a 2024 filing under federal security review.

Cerebras Systems refiled its IPO registration statement on Friday at a $23 billion valuation, backed by a $10 billion OpenAI compute contract. The Sunnyvale-based wafer-scale chipmaker told the SEC it plans to list on Nasdaq under ticker CBRS and is targeting a mid-May pricing window, per the S-1 filing. The refiling arrives with a materially different shape than the 2024 version. Cerebras is larger, profitable on a non-GAAP basis, and anchored by a multi-year compute contract with OpenAI instead of a single UAE-linked customer. It is the first AI chip challenger to Nvidia to reach a public roadshow with a named, billion-dollar anchor customer.

The valuation itself is a sharp reset. Cerebras last priced its equity at $23 billion in a Series H round in February, the same number the company is carrying into the roadshow. Some outlets had reported a stretch target as high as $35 billion. Those figures are not in the S-1. The registration statement lists only the placeholder language that the number of shares and the price range “have not yet been determined.”

The 2024 Filing That Didn’t Happen

Cerebras first filed to go public in September 2024. The original S-1 disclosed that G42, an AI firm controlled by Abu Dhabi’s sovereign wealth apparatus, accounted for 87% of the company’s revenue in the first half of 2024 and 85% for the full year. That concentration triggered a review by the Committee on Foreign Investment in the United States, or CFIUS (a federal panel that screens foreign investment in U.S. companies for national security risk). The review delayed the offering. Cerebras withdrew the prospectus in October 2025.

The 2026 refiling does not eliminate concentration risk. It redistributes it. OpenAI now occupies the top-customer slot G42 held two years ago. The S-1 cautions that contract terms “are subject to modification” and that actual revenues “may vary significantly from committed amounts,” language that belongs in any IPO prospectus but that carries more weight when one customer is the source of most future revenue.

The OpenAI Contract at the Center

In January 2026, OpenAI signed what was then described as a multi-year compute agreement with Cerebras valued at roughly $10 billion. The new S-1 expands that picture. According to the filing, OpenAI has committed to deploying 750 megawatts of Cerebras AI compute over the life of the contract. Subsequent reporting, summarized by Axios in its look inside the filing, put the potential total spending commitment as high as $20 billion if OpenAI takes additional capacity, with warrant structures that could ultimately deliver OpenAI up to a 10% equity stake in Cerebras at specified spending thresholds.

CEO Andrew Feldman framed the win in competitive terms. “Obviously, [Nvidia] didn’t want to lose the fast inference business at OpenAI, and we took that from them,” Feldman told Yahoo Finance. Inference (the process of running trained AI models to answer user queries, as opposed to training them from scratch) has become the fastest-growing segment of the AI compute market. OpenAI’s volume in inference is now the largest single workload in the industry, which is why the account shifting to Cerebras reshapes the competitive field.

How the Numbers Changed

Revenue growth from 2024 to 2025 tells the clearest story in the filing. Cerebras went from $290.3 million in 2024 revenue to $510 million in 2025, a 76% jump. The company turned profitable on an adjusted basis. Non-GAAP net income came in at $237.8 million for 2025. On a GAAP basis, one-time items and stock-based compensation pushed the bottom line to a net loss of $75.7 million. The gap between those two figures is a familiar pattern in chip IPOs and typically narrows over the first two years post-listing as vesting schedules normalize.

Stacy Rasgon, semiconductor analyst at Bernstein Research, said the filing lands into a specific kind of market. “Cerebras is entering the public markets at a moment when investor appetite for AI infrastructure is at an all-time high, but so is scrutiny of unit economics,” Rasgon said. He added that “the $510 million revenue figure is impressive for a company that was doing sub-$100 million just two years ago, but investors will want to see the path to diversified revenue streams beyond two anchor customers.”

The Number That Matters

The single number inside the filing that most directly sets the ceiling on Cerebras’s valuation is the share of future revenue concentrated in its two largest accounts. The S-1 reports substantial remaining performance obligations (the accounting term for contracted future revenue that has not yet been recognized), including roughly $1.43 billion in long-term commitments from G42. Combined with OpenAI’s 750-megawatt schedule, the forward book is large. The composition is what priced risk into the 2024 S-1 and what will price risk into this one. If OpenAI’s deployment schedule slips, or if G42’s residual commitment is renegotiated, the growth curve the bankers are pitching compresses. That is the pattern the first-year public company will have to either defend against or outgrow.

The Underwriting Syndicate

The underwriting list is itself a signal. Morgan Stanley, Citigroup, Barclays, and UBS are lead book-runners. Mizuho and TD Cowen are bookrunners. Needham, Craig-Hallum, Wedbush, Rosenblatt, and Academy Securities fill out the co-manager slate, according to the company’s announcement. The mix is bulge-bracket-plus-specialist, consistent with a deal that wants both institutional breadth and semiconductor-specific demand. The inclusion of Academy Securities, a service-disabled-veteran-owned broker with deep Department of Defense relationships, signals that Cerebras wants visibility into federal and defense-sector buying channels as it scales.

What to Watch

Pricing and size: Reports suggest a target of roughly $2 billion in IPO proceeds. The 2024 attempt was in the $750 million to $1 billion range. A doubling in deal size would indicate bankers are confident the book covers at the $23 billion valuation rather than requiring a downsize to clear.

G42 disclosures: The new S-1 lists long-term G42 commitments of around $1.43 billion. Watch for amended or updated language in subsequent S-1/A filings. Any change to the G42 relationship is still CFIUS-adjacent and could re-open the security review that stalled the 2024 deal.

Mid-May window: The S-1 must sit on file for at least 15 days before a roadshow begins. A mid-May pricing window lines up with a late-April or early-May roadshow start. Watch the SEC EDGAR docket for the first amended filing with a price range, which is the earliest durable signal that the deal is clearing review.