Company · Electric Utilities & Power Generation

Constellation Energy Group Inc

Federal civil lawsuits naming Constellation Energy Group Inc, a Electric Utilities & Power Generation company.

Public CompanyElectric Utilities & Power Generation

Ticker: Nasdaq: CEG
Business: Electric Services
Headquarters: Baltimore, MD
Incorporated in: Pennsylvania
SEC CIK: 1868275

Constellation Energy Group Inc is a public company in Electric Services, based in Baltimore, MD (traded on Nasdaq as CEG, incorporated in Pennsylvania). It appears in 46 federal civil lawsuits in this index, most often as a defendant (39 of 46). These cases are most often Contract and Civil Rights matters, filed between 1999 and 2025, most frequently in District Court, D. Maryland. The most common causes of action are Breach of Contract, Securities, and Employment Discrimination. Frequent opposing parties include The Narragansett Electric Company, John Martin, LLC, and Halliburton Energy Services, Inc.

Lawsuits

As Defendant

As Plaintiff

Open

Terminated

1999–2025

Span

9 mo

Median Duration

1.7 cases/yrNamed as defendant in 85% of casesRecent filings steady

Cases by State

Open Cases Over Time

1999peak 12 open2025

Case Types Over Time

19992025

ContractCivil RightsSecurities / CommoditiesLaborFederal Tax / Statutory Actions

Filings by Year

19992025

Case Types filter →

Contract14

Civil Rights13

Securities / Commodities7

Labor6

Federal Tax / Statutory Actions3

Antitrust1

Where Filed filter →

Frequent Opposing Parties

46 Cases — Newest First

Calderone v. Constellation Energy

Contract Open District Court, S.D. TexasNo. 4:25-cv-04102Filed 08/29/2025
Dorrell v. Constellation Energy Corporation

Antitrust Open District Court, D. MarylandNo. 1:25-cv-02251Filed 07/11/2025
Painters Dc 30 Realty, LLC v. Constellation Energy Generation, LLC

Federal Tax / Statutory Actions Open District Court, N.D. IllinoisNo. 1:25-cv-07176Filed 06/26/2025
Summerland v. Constellation Energy Generation LLC

Civil Rights Open District Court, N.D. IllinoisNo. 1:24-cv-06390Filed 07/25/2024
Perrong v. Constellation Energy Corporation

Federal Tax / Statutory Actions Terminated District Court, D. MarylandNo. 1:22-cv-00830Filed 04/06/2022
Energy Intelligence Group, Inc v. Constellation Energy Generation, LLC

Copyright Terminated District Court, N.D. IllinoisNo. 1:20-cv-03983Filed 07/08/2020
Coda v. Constellation Energy Power Choice, LLC

Personal Property / Fraud Terminated District Court, D. New JerseyNo. 2:17-cv-03437Filed 05/15/2017
Tecta America East, LLC v. Constellation Energy Nuclear Group, LLC

Contract Terminated District Court, D. MarylandNo. 1:13-cv-02062Filed 07/16/2013
Adedamola v. Constellation Energy

Civil Rights Terminated District Court, D. MassachusettsNo. 1:13-cv-11245Filed 05/21/2013
Jones v. Constellation Energy Projects & Services

Civil Rights Terminated District Court, D. MarylandNo. 8:13-cv-00850Filed 03/20/2013
Werner v. Constellation Energy Group Inc

Contract Terminated District Court, S.D. TexasNo. 4:13-cv-00017Filed 01/03/2013
Combs v. Constellation Energy Group

Civil Rights Terminated District Court, D. MarylandNo. 8:12-cv-02722Filed 09/12/2012
Smith v. Constellation Energy Group, Inc

Securities / Commodities Terminated District Court, D. MarylandNo. 1:11-cv-02437Filed 08/30/2011
Walker v. Constellation Energy Group, Incorporated

Securities / Commodities Terminated District Court, D. MarylandNo. 1:11-cv-02165Filed 08/04/2011
Constellation Energy Group, Inc v. Meyers-Reynolds & Associates, Inc

Contract Terminated District Court, D. MarylandNo. 1:11-cv-00638Filed 03/09/2011
Save Western Maryland v. Constellation Green Energy, LLC

Federal Tax / Statutory Actions Terminated District Court, D. MarylandNo. 1:10-cv-03565Filed 12/21/2010
Young v. Constellation Energy

Contract Terminated District Court, D. MarylandNo. 1:10-cv-03530Filed 12/16/2010
Glace v. Constellation Energy Projects and Services Group, Inc

Civil Rights Terminated District Court, D. MassachusettsNo. 3:09-cv-30182Filed 10/26/2009
Slater v. Constellation Energy Group

Civil Rights Terminated District Court, W.D. New YorkNo. 6:09-cv-06267Filed 05/21/2009
John Martin, LLC v. Constellation Energy Group, Inc

Securities / Commodities Terminated District Court, D. MarylandNo. 1:09-cv-00408Filed 02/18/2009
Ganin v. Constellation Energy Group, Inc

Securities / Commodities Terminated District Court, D. MarylandNo. 1:09-cv-00409Filed 02/18/2009
Constellation Energy Commodities Group, Inc v. Massey Coal Sales Company, Inc

Contract Terminated District Court, D. MarylandNo. 1:09-cv-00180Filed 01/28/2009
Iurlano v. Constellation Energy Group, Inc

Securities / Commodities Terminated District Court, D. MarylandNo. 1:08-cv-03303Filed 12/08/2008
Ganin v. Constellation Energy Group, Inc

Securities / Commodities Terminated District Court, S.D. New YorkNo. 1:08-cv-09755Filed 11/12/2008
Degroot v. Constellation Energy Group Inc

Labor Terminated District Court, S.D. New YorkNo. 1:08-cv-09652Filed 11/10/2008
Litver v. Constellation Energy Group, Inc

Contract Terminated District Court, D. MarylandNo. 1:08-cv-02927Filed 11/04/2008
Dutta v. Constellation Energy Group, Inc

Contract Terminated District Court, D. MarylandNo. 1:08-cv-02854Filed 10/27/2008
Asbestos Workers Philadelphia Pension Fund v. Constellation Energy Group, Inc

Contract Terminated District Court, D. MarylandNo. 1:08-cv-02667Filed 10/10/2008
Hays v. Constellation Energy Group, Inc

Labor Terminated District Court, D. MarylandNo. 1:08-cv-02662Filed 10/09/2008
Greenberg v. Constellation Energy Group, Inc

Contract Terminated District Court, D. MarylandNo. 1:08-cv-02543Filed 09/29/2008
Constellation Energy Commodoties Group, Inc v. Ppl Energyplus, LLC

Contract Terminated District Court, S.D. New YorkNo. 1:08-cv-08369Filed 09/29/2008
John Martin, LLC v. Constellation Energy Group, Inc

Securities / Commodities Terminated District Court, S.D. New YorkNo. 1:08-cv-08185Filed 09/22/2008
Larkin v. Constellation Energy Group, Inc

Labor Terminated District Court, S.D. West VirginiaNo. 2:08-cv-01044Filed 09/08/2008
Trent v. Constellation Energy Group, Inc

Civil Rights Terminated District Court, D. MarylandNo. 1:08-cv-01271Filed 05/15/2008
Constellation Energy Commodities Group, Inc v. The Narragansett Electric Company

Contract Terminated District Court, D. MassachusettsNo. 4:08-cv-40068Filed 04/14/2008
Blair v. Constellation Energy Group, Inc

Labor Terminated District Court, S.D. West VirginiaNo. 2:08-cv-00155Filed 03/10/2008
Marty Richard Ferguson v. Constellation Energy Group, Inc

Civil Rights Terminated District Court, D. MarylandNo. 1:08-cv-00274Filed 01/29/2008
Cordaro v. Constellation Energy

Civil Rights Terminated District Court, W.D. New YorkNo. 6:07-cv-06415Filed 08/23/2007
The Narragansett Electric Company v. Constellation Energy Commodities Group, Inc

Contract Terminated District Court, D. Rhode IslandNo. 1:06-cv-00404Filed 09/11/2006
Thacker v. Constellation Energy

Civil Rights Terminated District Court, D. MarylandNo. 1:06-cv-00398Filed 02/15/2006
Canova v. Constellation Energy Group, Inc

Civil Rights Terminated District Court, N.D. New YorkNo. 5:04-cv-01459Filed 12/16/2004
Arnold v. Constellation Energy

Civil Rights Terminated District Court, D. MarylandNo. 1:02-cv-03444Filed 10/21/2002
Moore v. Constellation Energy

Civil Rights Terminated District Court, D. MarylandNo. 1:00-cv-03170Filed 10/23/2000
Constellation Energy, Et Al v. Clark/Bardes, Inc

Labor Terminated District Court, D. MarylandFiled 07/21/2000
Constellation Energy v. Clark/Bardes, Inc

Labor Terminated District Court, D. MarylandNo. 1:00-cv-02255Filed 07/21/2000
Constellation Energy v. Commercial Steel

Contract Terminated District Court, W.D. PennsylvaniaNo. 2:99-cv-00590Filed 04/15/1999