John Chisholm bought stock once, on May 15, 2018

John W. Chisholm is a person and an experienced energy-services executive who has served on the Board of Directors of Natural Gas Services Group, Inc. (NGS) as an independent director.( He was appointed to NGS’s board in December 2006 and was later named lead independent director; in 2022, the company also appointed him as interim President and Chief Executive Officer during a leadership transition.(

Chisholm’s background includes founding Wellogix, an oil-and-gas software company, after co-founding and serving as President of ProTechnics Company from 1985 until its sale to Core Laboratories in 1996.( He then served as Senior Vice President of Global Sales and Marketing at Core Laboratories before starting Chisholm Energy Partners, an investment fund focused on mid-size energy service companies.( He holds a Business Administration degree from Fort Lewis College in Colorado and has also served on the board of Flotek Industries and on the Editorial Advisory Board of the Oil & Gas Journal.(

Written by Perplexity from public sources.