NEW YORK, Sept. 29, 2026 (GLOBE NEWSWIRE) -- Pomerantz LLP is investigating claims on behalf of investors of Deep Fission, Inc. (“Deep Fission” or the “Company”) (NASDAQ: FISN). Such investors are advised to contact Danielle Peyton at newaction@pomlaw.com or 646-581-9980, ext. 7980.
PHILADELPHIA, Sept. 29, 2026 (GLOBE NEWSWIRE) -- Kehoe Law Firm, P.C. is investigating potential securities claims on behalf of investors who purchased Deep Fission, Inc. ("Deep Fission" or the "Company") (NASDAQ: FISN) common stock in or traceable to the Company’s June 2026 initial public offering ("IPO") and/or in the open market following the IPO.
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company working to place small modular pressurized water reactors (SMRs) in boreholes approximately one mile underground, today announced that management will participate in the following upcoming investor conferences:
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”) was targeted yesterday by a short-seller report criticizing the Company and its technology. Deep Fission believes the report is highly misleading and contains numerous distortions, inaccuracies and mischaracterizations.
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company working to place small modular pressurized water reactors (SMRs) in boreholes approximately one mile underground, today announced a collaboration with Youngquist Brothers, LLC ("Youngquist"), a commercial drilling contractor specializing in large-diameter boreholes, to evaluate and test drilling technologies for Deep Fission's underground reactor deployment model.
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed one mile underground, today announced the public release of its Nuclear Safety Design Agreement (NSDA) for the Gravity™ Nuclear Reactor. The U.S. Department of Energy (DOE) approved the NSDA as part of the Company’s Reactor Pilot Program taking place in Parsons, Kansas.
Deep Fission, Inc. (Nasdaq: FISN) ("Deep Fission" or the "Company"), an advanced nuclear energy company developing small modular pressurized water reactors a mile underground, today announced that it has successfully installed and retrieved a full-size prototype reactor canister from a borehole using standard commercial drilling equipment operated by a commercial drilling and rigging crew. Nothing about the demonstration required equipment that had to be invented, custom-built, or adapted for nuclear service.
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed one mile underground, today announced the appointment of ShawnTrell Scales as Chief People Officer. She will lead the company's people strategy as Deep Fission aims to advance from first-of-a-kind demonstration to commercial deployment.
Deep Fission (NASDAQ:FISN) is targeting commercial electricity generation from its first underground nuclear reactor in Parsons, Kansas, by the end of 2027, Chief Executive Officer Liz Muller said during a company presentation.
Muller said the company has been accepted into the U.S. Department of E
Deep Fission (NASDAQ:FISN) is pursuing an underground approach to advanced nuclear power, with plans to place pressurized water reactors in boreholes roughly a mile below the surface, Co-Founder and CEO Liz Muller said at Canaccord Genuity’s 46th annual growth conference.
Muller said the company’s
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed one mile underground, today announced that the U.S. Department of Energy (DOE), has approved the company's Nuclear Safety Design Agreement (NSDA) for its Gravity™ Nuclear Reactor. This marks a major regulatory milestone, confirming that Deep Fission's reactor design warrants advancement under the Department of Energy’s Reactor Pilot Program.
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors deployed one mile underground, today announced that Liz Muller, Co-Founder and CEO of Deep Fission, will present at Canaccord Genuity’s 46th Annual Growth Conference in Boston, MA on Tuesday, August 11, 2026 at 1:30 p.m. ET.
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed one mile underground, today announced the arrival of its prototype reactor canister at its Parsons, Kansas site, marking a key milestone in the Company’s Proof-of-Concept Well program and its Gravity Nuclear Reactor™ development. In celebration of this milestone and its listing on the Nasdaq Stock Market, Deep Fission will ring the Nasdaq closing bell today at 4:00 PM ET.
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed one mile underground, will participate in the Golden Era of Nuclear Power event at Idaho National Laboratory’s (INL) Materials and Fuels Complex in Idaho Falls, Idaho on Thursday, June 25.
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed one mile underground, today announced it has signed Letters of Intent (LOIs) with data centers, co-developers, industrial parks, and strategic partners representing up to 18.5 gigawatts (GW) of potential generation capacity.
Deep Fission, Inc. (Nasdaq: FISN) (“Deep Fission” or the “Company”), an advanced nuclear energy company developing small modular pressurized water reactors installed one mile underground, today announced the closing of its public offering of 2,500,000 shares of its common stock at a public offering price of $16.00 per share, for total gross proceeds of $40 million, before deducting underwriting discounts and commissions and other offering expenses payable by the Company. In addition, Deep Fission has granted the underwriters a 30-day option to purchase up to an additional 375,000 shares of its common stock at the initial public offering price, less underwriting discounts and commissions. The Company’s common stock began trading on Nasdaq Global Market under the symbol “FISN” on June 18, 2026.
