# EDGAR Filing Document

**Accession Number:** 0001168165
**File Stem:** 9999999995-26-001411
**Filing Date:** 2026-4
**Character Count:** 1352
**Document Hash:** b5e69a3a3c584b2a2af88713753e7257
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-001411.hdr.sgml**: 20260501

**ACCESSION NUMBER**: 9999999995-26-001411

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260430

**DATE AS OF CHANGE**: 20260501

**EFFECTIVENESS DATE**: 20260430

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CONSTELLATION ENERGY GENERATION LLC
- **CENTRAL INDEX KEY:** 0001168165
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 233064219

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-295174
- **FILM NUMBER:** 26928622

**BUSINESS ADDRESS:**
- **STREET 1:** 200 ENERGY WAY
- **CITY:** KENNETT SQUARE
- **STATE:** PA
- **ZIP:** 19348-2473
- **BUSINESS PHONE:** 833-883-0162

**MAIL ADDRESS:**
- **STREET 1:** 200 ENERGY WAY
- **CITY:** KENNETT SQUARE
- **STATE:** PA
- **ZIP:** 19348-2473

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** EXELON GENERATION CO LLC
- **DATE OF NAME CHANGE:** 20020225

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** April 30, 2026

**Time:** 16:00:00

**Form Type:** S-4

---

**CIK:** 0001168165

**Company Name:** CONSTELLATION ENERGY GENERATION LLC

**File Number:** 333-295174