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Deep Fission files for 6M Nasdaq IPO at $24-$26/sh

May 20, 2026 6:12 AM

Deep Fission Inc. filed for an initial public offering Wednesday, seeking to offer 6 million shares of common stock on the Nasdaq Global Market under the ticker symbol FISN.

The company anticipates pricing the shares between $24.00 and $26.00 per share. At the midpoint of this range, the offering would raise approximately $150 million.

This represents Deep Fission's first public offering, as no established trading market currently exists for its common stock. The company stated it will not complete the offering unless Nasdaq approves the stock listing.

William Blair, Stifel, Canaccord Genuity, Benchmark and Seaport Global Securities serve as underwriters for the offering. The final public offering price will be determined through agreement between Deep Fission and the underwriter representatives.

The common stock carries a par value of $0.0001 per share. Deep Fission noted that the anticipated pricing may not reflect how shares will trade in the public market following the offering's completion.

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