Constellation Energy SEC filings, summarized
We read every Constellation Energy 8-K filing and insider trade the night it hits SEC EDGAR, and turn it into a two-minute plain-English summary.
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Recent filings
Constellation Energy ($CEG) filed a Form 8‑K on Mar 26, 2026 — Item 9.01 furnishes Inline XBRL exhibits:…
Constellation Energy ($CEG) filed a Form 8‑K on Mar 26, 2026 — Item 9.01 furnishes Inline XBRL exhibits: Exhibit 101 (Interactive Data) and Exhibit 104…
Constellation Energy ($CEG): Director Alan Armstrong resigned from the Board effective March 23, 2026, per…
Constellation Energy ($CEG): Director Alan Armstrong resigned from the Board effective March 23, 2026, per Form 8‑K (Item 5.02) filed March 26, 2026. 📌…
Constellation filed Item 9.01 (Mar 20, 2026): audited consolidated financials of Calpine (business to be…
Constellation filed Item 9.01 (Mar 20, 2026): audited consolidated financials of Calpine (business to be acquired) as of Dec 31, 2025 & 2024; yrs 2023-2025…
Completed merger on Jan 7, 2026: Constellation (CEG Parent) closed the Merger with Calpine per the Jan 10,…
Completed merger on Jan 7, 2026: Constellation (CEG Parent) closed the Merger with Calpine per the Jan 10, 2025 Merger Agreement. Calpine converted to…
Constellation Energy ($CEG) filed an 8‑K (Item 9.01) on Feb 24, 2026 furnishing Exhibit 99.1 (press…
Constellation Energy ($CEG) filed an 8‑K (Item 9.01) on Feb 24, 2026 furnishing Exhibit 99.1 (press release & earnings attachments) and XBRL cover files…
Constellation Energy ($CEG) announced Q4 results for the period ended Dec 31, 2025 via press release on…
Constellation Energy ($CEG) announced Q4 results for the period ended Dec 31, 2025 via press release on Feb 24, 2026. Press release and related attachments…
Constellation Energy filed an 8‑K on 2026-02-24 under Item 2.02 (Results of Operations & Financial…
Constellation Energy filed an 8‑K on 2026-02-24 under Item 2.02 (Results of Operations & Financial Condition); Section 7 cites Regulation FD — indicates…
Constellation ($CEG) filed an 8‑K (Jan 15, 2026) furnishing supplemental indentures & forms of new senior…
Constellation ($CEG) filed an 8‑K (Jan 15, 2026) furnishing supplemental indentures & forms of new senior notes (2029, Feb‑2031, Mar‑2031) tied to Calpine…
Constellation Energy ($CEG) filed an 8-K on 2026-01-15: Item 2.03 notifies creation of a "direct financial…
Constellation Energy ($CEG) filed an 8-K on 2026-01-15: Item 2.03 notifies creation of a "direct financial obligation" and incorporates Item 1.01 by…
BREAKING: $CEG confirms close of Calpine deal & completes private exchange — $2.2897B of Calpine notes…
BREAKING: $CEG confirms close of Calpine deal & completes private exchange — $2.2897B of Calpine notes tendered, accepted, retired & canceled; Calpine now a…
8‑K (Item 9.01) filed 2026‑01‑13: Constellation Energy Corp & Constellation Energy Generation, LLC…
8‑K (Item 9.01) filed 2026‑01‑13: Constellation Energy Corp & Constellation Energy Generation, LLC furnished Exhibit 99.1 (press release) plus Inline XBRL…
Jan 13, 2026 — Constellation Energy Generation, LLC announced expiration of its previously announced…
Jan 13, 2026 — Constellation Energy Generation, LLC announced expiration of its previously announced exchange offers and consent solicitations for…
Constellation ($CEG) 8‑K (Jan 7, 2026): Audited Calpine consolidated FS (YE 2024/2023/2022) and unaudited…
Constellation ($CEG) 8‑K (Jan 7, 2026): Audited Calpine consolidated FS (YE 2024/2023/2022) and unaudited Q3 2025/2024 statements, plus pro forma combined…
Jan 7, 2026 — CEG Parent announced completion of the Mergers.
Jan 7, 2026 — CEG Parent announced completion of the Mergers. Press release attached to Form 8‑K as Exhibit 99.1; incorporated by reference and furnished…
Effective Jan 7, 2026 (closing of the Mergers), Shane Smith promoted to Executive VP & Chief Financial…
Effective Jan 7, 2026 (closing of the Mergers), Shane Smith promoted to Executive VP & Chief Financial Officer and principal financial officer of CEG…
Constellation Energy ($CEG) issued stock consideration to former Calpine stockholders; the issuance was…
Constellation Energy ($CEG) issued stock consideration to former Calpine stockholders; the issuance was unregistered and made in reliance on Section 4(a)(2)…
Constellation Energy ($CEG) 8‑K filed 2026‑01‑07: Item 2.03 incorporates Item 1.01 “Calpine Notes” —…
Constellation Energy ($CEG) 8‑K filed 2026‑01‑07: Item 2.03 incorporates Item 1.01 “Calpine Notes” — indicating creation of a direct financial…
On Jan 7, 2026 Constellation/CEG Parent closed the transaction — Calpine is now a wholly owned subsidiary…
On Jan 7, 2026 Constellation/CEG Parent closed the transaction — Calpine is now a wholly owned subsidiary after a Jan 2 reorg and Jan 5 conversion to a DE…
BREAKING: Constellation ($CEG) signed a Registration Rights Agreement with former Calpine sellers — CEG…
BREAKING: Constellation ($CEG) signed a Registration Rights Agreement with former Calpine sellers — CEG must file an S‑3 on closing to register resale…
Constellation Energy filed a Form 8‑K on Dec 23, 2025 — exhibits include a press release (Ex.99.1) and…
Constellation Energy filed a Form 8‑K on Dec 23, 2025 — exhibits include a press release (Ex.99.1) and Inline XBRL cover page (Ex.101/104). Report furnished…