10 Phillips 66 HR leaders
VP, HR Services & Operations, GM, HRBP & Labor/Employee Relations and Sr Director, HRBP - Marketing & Commercial are among the current titles held by these ten Phillips 66 HR leaders, alongside labor relations, talent acquisition and benefits director roles. A reader can learn how HR leaders work at Phillips 66 from people who have held the role.
Professionals to explore
Daniel Negrotto, MBA
LinkedInExperience: Director - Labor & Employee Relations · Phillips 66
Daniel Negrotto, MBA has held the role of Director - Labor & Employee Relations at Phillips 66 since June 2023, and the listing also shows the same title there from 2022 to 2023. Daniel Negrotto was Labor Relations HR Site Partner - Deer Park, Lone Star, La Porte & Bayport at Dow from 2019 to 2022 and HR Labor Relations Leader - Deer Park and Beaumont at Dow from 2018 to 2022.
Jennifer Young
LinkedInExperience: Director, Benefits · Phillips 66
Jennifer Young has been Director, Benefits at Phillips 66 since August 2025. Jennifer Young was Director, Global Benefits at Aspen Technology from 2024 to 2025 and Senior Director, Benefits at WM from 2002 to 2024, and the highlight describes experience designing health, welfare and retirement benefits programs.
Leslie Mahl
LinkedInExperience: Sr Director, HRBP - Marketing & Commercial · Phillips 66
Leslie Mahl has been Sr Director, HRBP - Marketing & Commercial at Phillips 66 since October 2024 and was HRBP Manager, Commercial & VCO there from 2023 to 2024. At Phillips 66, Leslie Mahl was also HRBP Manager, Global Marketing & Specialties from 2021 to 2024 and HRBP Manager, Lubricants from 2020 to 2021.
Mark Wade
LinkedInExperience: Sr Director, HRBP Regional Refining · Phillips 66
Mark Wade has been Sr Director, HRBP Regional Refining at Phillips 66 since October 2025 and was HR Manager, Regional Refining there from 2025 to 2026. At Phillips 66, Mark Wade was also Human Resouces Manager from 2020 to 2025 and HR Director from 2016 to 2020, and is based in South Killingholme, England, United Kingdom.
Matt Epperson
LinkedInExperience: VP, HR Services & Operations · Phillips 66
Matt Epperson has been VP, HR Services & Operations at Phillips 66 since October 2022 and was Manager, HR Operations there from 2015 to 2022. At Phillips 66, Matt Epperson was also Manager, HR Shared Services from 2012 to 2015, and was HRBP Director, Finance and HR at ConocoPhillips from 2011 to 2012.
Rhiannon Lear
LinkedInExperience: Director, Talent Acquisition · Phillips 66
Rhiannon Lear has been Director, Talent Acquisition at Phillips 66 since September 2026 and was HRBP Director Digital & Admin there from 2024 to 2026. At Phillips 66, Rhiannon Lear was also HRBP Director, Digital & Admin and Business Transformation Office from 2023 to 2024 and HRBP Director, Legal, Compliance, Government Affairs, Procurement & BTMO from 2021 to 2023.
Sherri Parker
LinkedInExperience: Director, Labor Relations & Employee Relations · Phillips 66
Sherri Parker has been Director, Labor Relations & Employee Relations at Phillips 66 since December 2022 and was Sr. HRBP Labor Relations Team Leader there from 2019 to 2022. At Phillips 66, Sherri Parker was also HRBP- Labor Relations Team Leader from 2014 to 2019, and the highlight says the role covers labor relations among other HR services.
Sonya Reed
LinkedInExperience: SVP, Chief Human Resources Officer · Phillips 66
Sonya Reed was SVP, Chief Human Resources Officer at Phillips 66 from May 2015 to December 2023. Sonya Reed was also EVP, Chief Human Resources Officer at Prysmian from 2013 to 2015 and SVP of Human Resources at Prysmian from 2011 to 2012, and has been Independent Director at DNOW since September 2021.
Sophia Dimarhos
LinkedInExperience: HRBP Manager (Director), Midstream · Phillips 66
Sophia Dimarhos has been HRBP Manager (Director), Midstream at Phillips 66 since October 2022 and was Director (Manager), Corporate HR there from 2021 to 2022. At Phillips 66, Sophia Dimarhos was also HR Business Partner from 2019 to 2021 and Compensation Advisor from 2017 to 2019.
Stephen Potts
LinkedInExperience: GM, HRBP & Labor/Employee Relations · Phillips 66
Stephen Potts has been GM, HRBP & Labor/Employee Relations at Phillips 66 since September 2024 and was GM, HRBP Field Operations there from 2022 to 2024. At Phillips 66, Stephen Potts was also GM, HRBP Refining and Labor Relations from 2020 to 2022 and Manager, Human Resources - Midstream from 2012 to 2020.
Choose the right perspective
Pick the person whose HR remit is closest to your question, since partnering with operating sites, running HR operations, leading labor relations and managing benefits involve different decisions. Check the start date of each role to see how recent the experience is.
Questions to take into the conversation
- 01What did you focus on first when you took on your current HR role?
- 02How do you approach labor relations when a people program changes?
- 03What has your own work taught you about supporting leaders at operating sites?
Reaching Phillips 66 HR 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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