MARK C. WILLIAMSON

Corporate Board Profile

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ORION ENERGY SYSTEMS, INC.

Filing Date Source Excerpt
2009-09-30 "Mr. Williamson has been a partner of Putnam Roby Williamson Communications... He has more than 20 years of executive-level utility experience."
2010-09-10 "Mr. Williamson has been a partner of Putnam Roby Williamson Communications... He has more than 20 years of executive-level utility experience."
2011-09-09 "Mr. Williamson has been a partner of Putnam Roby Williamson Communications... He has more than 20 years of executive-level utility experience."
2012-09-10 "Mr. Williamson has been a partner of Putnam Roby Williamson Communications... He has more than 20 years of executive-level utility experience... prior to 1986, was a trial attorney."
2014-06-24 “Mr. Williamson has been a partner of Putnam Roby Williamson Communications... a strategic communications firm specializing in energy utility matters... He has more than 20 years of executive-level utility experience.”
2015-06-19 "Mr. Williamson has been a partner of Putnam Roby Williamson Communications... a strategic communications firm... He has more than 20 years of executive-level utility experience."
2016-06-29 "Mr. Williamson has been a partner of Putnam Roby Williamson Communications... Prior to joining Putnam Roby Williamson Communications, Mr. Williamson was vice president of major projects for American Transmission Company... and, prior to 1986, was a trial attorney"
2017-07-18 "Mr. Williamson has been a partner of Putnam Roby Williamson Communications... He has more than 20 years of executive-level utility experience... prior to 1986, was a trial attorney..."
2018-07-23 "Prior to joining Putnam Roby Williamson Communications, Mr. Williamson was vice president of major projects for American Transmission Company... and, prior to 1986, was a trial attorney"
2019-06-21 “We believe that Mr. Williamson’s background in the energy utility industry, legal experience and in management positions qualify him for service as a director of our company.”
2020-06-22 "Mr. Williamson... was a partner of... a strategic communications firm... Prior to joining... was vice president... and... was a trial attorney"
2021-06-21 "Mr. Williamson was a partner of Putnam Roby Williamson Communications... Prior to joining... was vice president of major projects... and... was a trial attorney..."
2022-06-21 "Mr. Williamson was a partner of Putnam Roby Williamson Communications... He has more than 20 years of executive-level utility experience... We believe that Mr. Williamson’s background in the energy utility industry, legal experience and in management positions qualify him"

Source material: SEC submissions metadata and DEF 14A proxy filings from EDGAR. Last updated: 2026-04-14