Oklo Inc. (NYSE: OKLO) is an advanced nuclear fission company developing compact, next-generation fission power plants — commonly referred to as microreactors — targeting commercial and industrial clean-energy customers. The company went public in May 2024 through its merger with AltC Acquisition Corp, a special purpose acquisition company sponsored by AltC Sponsor LLC and co-led by Sam Altman, bringing the nuclear technology developer onto the public markets under the clean-energy sector umbrella. In May 2025, Oklo filed an S-1 registration statement with the SEC, accession number 0001104659-25-046315, continuing the company's capital-markets activity following its SPAC combination. For comprehensive filing data, deal history, and real-time SPAC analytics on Oklo and hundreds of other transactions, sign up for full access at SpacDesk.