The story
The company traces its history back to 1986 with the opening of Frontier Wellhead & Supply in Watford City, North Dakota.
Major acquisitions
Source:
Frontier Wellhead & Supply Co. (2008)
Kodiak Stack Testing Company (2009)
Cable, Incorporated (2010)
Hanson Hot Oil (2010)
Luft Machine & Supply Co. (2011)
Spicer Wireline Inc. (2012)
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Canary Wellhead Equipment (2013) for "less than $100 million"
From Wikipedia’s article on Frontier Energy Group, shared under CC BY-SA 4.0.4