Here are the S-3 shelf registrations from Constellation Energy (CEG) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
An S-3 covers the shelf registration that lets an established company sell over time, so if you follow CEG and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full CEG filings page.
Constellation Energy Corporation and Constellation Energy Generation, LLC filed a shelf registration statement to register multiple classes of securities. The prospectus dated February 18, 2026 permits each registrant to offer, from time to time after effectiveness, common stock, preferred stock, depositary shares and debt securities as described.
The prospectus explains that specific terms, intended uses of proceeds and distribution methods will be provided in prospectus supplements; it incorporates by reference recent Form 10-Ks, Form 10-Qs and listed Form 8-Ks for further detail.
Constellation Energy Corporation has filed an automatic shelf registration statement on Form S-3 to register the resale of up to 49,633,207 shares of common stock. These shares were issued to former Calpine Corporation owners in connection with a merger and may be sold from time to time by multiple selling shareholders.
Constellation itself is not selling shares in this offering and will not receive proceeds from any resale, though it will cover most registration expenses. The selling shareholders may dispose of their shares in various ways, including market trades on Nasdaq under the symbol CEG, underwritten offerings, block trades, privately negotiated deals, hedging and short sales, at prices determined at the time of sale.
The filing is made under a registration rights agreement that requires Constellation to maintain an effective shelf registration so these merger-issued shares can be freely resold. As of January 7, 2026, Constellation had 362,355,476 shares of common stock outstanding.