GlobeNewswire Inc | Mar 25, 2021 08:42AM EDT

March 25, 2021

Midland, TX, March 25, 2021 (GLOBE NEWSWIRE) -- Natural Gas Services Group, Inc. (NYSE:NGS), a leading provider of gas compression equipment and services to the natural gas industry, announces the following conference call information for their fourth quarter and full year 2020 earnings release:

Earnings Release: Tuesday, March 30, 2021 before market opens Public distribution will be through Nasdaq OMX and the Natural Gas Services Group, Inc. website atwww.ngsgi.com.

Conference Call: Tuesday, March 30, 2021 at 10:00 a.m. Central, 11:00 a.m. Eastern Live via phone by dialing 877-358-7306, pass code "Natural Gas Services". All attendees and participants to the conference call should arrange to call in at least 5 minutes prior to the start time. Conference Call Replay For those unable to attend the live teleconference, a Webcast replay of the call will be available within 2 hours at the NGS website atwww.ngsgi.comunder the Investor Relations section. Stephen Taylor, Chairman, President and CEO of Natural Gas Services Group, Inc. will be leading the call and discussing fourth quarter and full year 2020 financial results.

About Natural Gas Services Group, Inc. NGS is a leading provider of small to medium horsepower, wellhead compression equipment to the natural gas industry with a primary focus on the non-conventional gas and oilindustry, i.e., coalbed methane, gas and oilshales and tight gas. The Company manufactures, fabricates, rents, sells and maintains natural gas compressors and flare systems for gas and oilproduction and plant facilities. NGS is headquartered in Midland, Texas with fabrication facilities located in Tulsa, Oklahoma and Midland, Texas and service facilities located in major gas and oilproducing basins in the U.S. Additional information can be found atwww.ngsgi.com.

For Additional Information Alicia Dada

Investor Relations

(432) 262-2700

Alicia.Dada@ngsgi.comwww.ngsgi.com