10 Constellation Energy legal leaders
Nina Jezic, SVP & Deputy General Counsel at Constellation, is one of ten Constellation Energy legal leaders listed here, alongside people who hold or have held deputy general counsel, managing counsel, legal operations and associate general counsel roles at the company. A reader can learn how legal leaders work at Constellation Energy from people who have held the role.
Professionals to explore
Arden Phillips
LinkedInExperience: Vice President, Deputy General Counsel and Corporate Secretary · Constellation
Vice President, Deputy General Counsel and Corporate Secretary at Constellation since June 2023, based in Washington, D.C.; the role entry describes advising the Board of Directors as a senior legal and governance executive. Former Associate General Counsel and Corporate Secretary at Constellation (2022–2023), VP, General Counsel and Chief Compliance Officer at Tahzoo (2019–2022), and Corporate Secretary and Associate General Counsel at United States Steel Corporation (2014–2017).
Carrie Allen
LinkedInExperience: Senior Vice President and Deputy General Counsel, Regulatory and Compliance · Constellation
Senior Vice President and Deputy General Counsel, Regulatory and Compliance at Constellation since February 2022, based in Bethesda, Maryland; the role entry describes managing a team of lawyers and legal professionals supporting regulatory work. Former Vice President and Deputy General Counsel, Constellation at Exelon Corporation (2018–2022) and Associate General Counsel, Constellation there (2016–2018).
Edward M Callaghan
LinkedInExperience: Associate General Counsel (Capital Projects & Corporate Procurement) · Constellation
Associate General Counsel (Capital Projects & Corporate Procurement) at Constellation since August 2026, based in the San Francisco Bay Area; the profile describes leading transactional attorneys supporting infrastructure development, procurement and supply chain. Former Managing Counsel at Calpine (2023–2026), Senior Director - Law at Bloom Energy (2020–2023) and Senior Corporate Counsel at Chevron (2017–2020).
Florence Davis
LinkedInExperience: Associate General Counsel · Constellation
Associate General Counsel at Constellation since January 2023, based in the Hartford area, a role the entry describes as wholesale transactional work; Florence Davis also lists Assistant General Counsel since 2022 for retail regulatory compliance. Former Assistant General Counsel at Exelon (2019–2022), Partner at Day Pitney LLP (2014–2019) and Senior Counsel at Constellation (2007–2008).
Joseph Downs
LinkedInExperience: Vice President and Managing Counsel, Corporate and Commercial · Constellation
Vice President and Managing Counsel, Corporate and Commercial at Constellation since July 2026, based in Washington, D.C. Former Associate General Counsel at Constellation (2022–2026), Assistant General Counsel at Exelon (2012–2022) and Senior Counsel at Constellation (2008–2012), and Counsel at Vedder (2007–2008).
Lynda Fohn
LinkedInExperience: Associate General Counsel · Constellation
Associate General Counsel at Constellation since February 2022, based in Austin, Texas. Former Assistant General Counsel at Constellation (2010–2022), a role the profile tags at director level in legal, Sr. Staff Counsel at Tara Energy (2007–2010) and Business Operations Analyst at Reliant Energy (2002–2003).
Marc Jenkins
LinkedInExperience: Director of Legal Operations & Innovation · Constellation
Director of Legal Operations & Innovation at Constellation since August 2025, based in the Nashville area. Former Chief of Legal Staff & Director of Legal Operations at Constellation (2024–2025) and Managing Director NMSource & Of Counsel at Nelson Mullins Riley & Scarborough (2022–2024); Marc Jenkins also lists an adjunct law professor role teaching AI and the Law at Belmont University College of Law.
Mark Hayden
LinkedInExperience: Associate General Counsel · Constellation
Associate General Counsel at Constellation since January 2026, based in Wadsworth, Ohio. Former Assistant General Counsel, Constellation Energy (2022–2025), and Associate General Counsel (2012–2021), Managing Counsel and Attorney (2006–2012) and Business Analyst (2000–2005) at FirstEnergy.
Nina Jezic
LinkedInExperience: SVP & Deputy General Counsel · Constellation
SVP & Deputy General Counsel at Constellation since February 2022, based in Houston. Former VP & Deputy General Counsel (2014–2022) and Associate General Counsel (2012–2014) at Exelon, Managing Counsel at Constellation (2003–2012), and Vice President & General Counsel at Omnicell (2000–2003).
Todd Brecher
LinkedInExperience: Vice President and Managing Counsel, Regulatory Policy and Compliance · Constellation
Vice President and Managing Counsel, Regulatory Policy and Compliance at Constellation since February 2026, based in Washington, D.C.; the role entry describes leading attorneys supporting generation, energy trading, and competitive wholesale work. Former Associate General Counsel at Constellation (2019–2026), Counsel at Akin Gump Strauss Hauer & Feld LLP (2015–2019) and Attorney-Advisor in the FERC Office of Enforcement (2010–2015).
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Questions to take into the conversation
- 01What took most of your time in your current legal role, and how did you decide what to handle in-house and what to send to outside counsel?
- 02How did you work with business leaders when legal risk and commercial goals pulled in different directions?
- 03What did you carry over from earlier roles that changed how you approach in-house legal work?
Reaching Constellation Energy legal leaders
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About this directory
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