10 NRG Energy finance leaders
Catherine Parham, VP, FP&A at NRG Energy, heads this list of NRG Energy finance leaders, with vice presidents of FP&A, treasury and finance, the corporate controller, and senior directors and directors of finance and planning. A reader can learn how finance leaders work at NRG Energy from people who have held the role.
Professionals to explore
Catherine Parham
LinkedInExperience: VP, FP&A · NRG Energy
Catherine Parham has been VP, FP&A at NRG Energy since January 2026, based in Houston. Catherine Parham was Sr. Director at NRG Energy from 2015 to 2026 and Director, Project Management there from 2012 to 2015, and describes supporting and leading complex projects in fossil, nuclear and solar.
David Frazer
LinkedInExperience: Vice President, Financial Planning and Analysis · NRG Energy
David Frazer has been Vice President, Financial Planning and Analysis at NRG Energy since March 2022, based in Greenville, South Carolina. David Frazer was Senior Vice President of Merchandise Planning and Allocation at At Home Group Inc. from 2019 to 2022, Vice President of Financial Planning Analysis there from 2013 to 2018 and Director of Finance at Yum! Brands from 2005 to 2013.
Devon Stonitsch
LinkedInExperience: Director, Finance · NRG Energy
Devon Stonitsch has been Director, Finance at NRG Energy since January 2011, based in Houston. At NRG Energy, Devon Stonitsch was also Manager, Financial Planning & Analysis from 2007 to 2010 and Accountant from 2004 to 2007, all listed on the same profile.
Diego Paez Touche
LinkedInExperience: Senior Director | Financial Forecasting & Analytics · NRG Energy
Diego Paez Touche has been Senior Director | Financial Forecasting & Analytics at NRG Energy since January 2026, based in Houston. At NRG Energy, Diego Paez Touche was also Director, Retail Optimization and Analisis from 2022 to 2026 and Sr. Performance Manager from 2019 to 2022.
Harshit Chatur
LinkedInExperience: Sr. Director, Finance · NRG Energy
Harshit Chatur has been Sr. Director, Finance at NRG Energy since January 2026, a role tagged in the Finance & Accounting department at director level. Harshit Chatur was Sr. Director - Corporate Finance & FP&A at NRG Energy from 2019 to 2022 and Vice President, Treasury and Project Finance at CenTrio from 2025 to 2026.
Jean-Pierre (JP) Breaux
LinkedInExperience: VP Treasurer · NRG Energy
Jean-Pierre (JP) Breaux has been VP Treasurer at NRG Energy since July 2023, based in Princeton, New Jersey. JP Breaux was Treasurer at Calumet from 2018 to 2023, Treasurer at Montana Renewables, LLC from 2021 to 2023 and VP and Treasurer at Carrizo Oil & Gas, Inc. from 2015 to 2018.
Mark Stevenson
LinkedInExperience: Director, Business Planning & Performance · NRG Energy
Mark Stevenson has been Director, Business Planning & Performance at NRG Energy since August 2025, based in Calgary, and describes leading a team responsible for financial planning, forecasting and performance reporting across both regulated and competitive businesses. Mark Stevenson was Director, Planning & Corporate Development at Vesta Energy Corp. from 2017 to 2024.
Natalie DeRitis, CPA
LinkedInExperience: Director, Financial Planning & Analysis · NRG Energy
Natalie DeRitis, CPA has been Director, Financial Planning & Analysis at NRG Energy since March 2026, based in Greater Philadelphia. At NRG Energy, Natalie DeRitis was also Senior Manager, Financial Planning & Analysis from 2020 to 2026 and Accounting Manager from 2015 to 2020, and was Assurance Manager at RSM US LLP from 2008 to 2015.
Nathan Stubbs
LinkedInExperience: Vice President, Finance · Vivint
Nathan Stubbs has been Vice President, Finance at Vivint since December 2022, with a profile headline of VP, FP&A at NRG Energy covering Consumer: Home Energy + Vivint Smart Home. At Vivint, Nathan Stubbs was also Vice President, Investor Relations from 2019 to 2022 and Vice President, Financial Planning and Analysis from 2018 to 2019.
Shaun Eller, CPA
LinkedInExperience: Corporate Controller · NRG Energy
Shaun Eller, CPA has been Corporate Controller at NRG Energy since December 2025, based in Mount Holly, New Jersey. At NRG Energy, Shaun Eller was also Assistant Controller from 2022 to 2025, Senior Director, FP&A from 2021 to 2022 and Director of Financial Planning and Analysis from 2020 to 2021.
Choose the right perspective
Pick the person whose finance area, whether FP&A, treasury, controllership or finance for a specific business, matches the decision you face. Check when each person started the current role to judge how recent the experience is.
Questions to take into the conversation
- 01What did you focus on first when you took on your current finance role?
- 02How do you keep a forecast useful when commodity prices or demand move sharply?
- 03What has your own work taught you about partnering with business leaders on plans they rely on?
Reaching NRG Energy finance leaders
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About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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