List of 26 Public Companies in Oklahoma

Name	Sector	Revenue $mlns	M&A Activity			Last 5 Years
Name	Sector	Revenue $mlns	Total	Buy	Sell	Last 5 Years
Devon Energy NYSE : DVN Oklahoma City, Oklahoma, United States website	Oil/Gas Exploration	15,940	24	13	11
Chesapeake Energy NASDAQ : CHK Oklahoma City, Oklahoma, United States website	Oil/Gas Exploration	7,775	21	12	9
Williams NYSE : WMB Tulsa, Oklahoma, United States website	Energy Services and Equipment	10,503	15	10	5
NGL NYSE : NGL Tulsa, Oklahoma, United States website	Energy Services and Equipment	6,956	14	10	4
App Swarm Public Tulsa, Oklahoma, United States website	Digital Media	3	7	7	-
ONEOK NYSE : OKE Tulsa, Oklahoma, United States website	Energy Services and Equipment	21,698	5	5	-
OGE Energy NYSE : OGE Oklahoma City, Oklahoma, United States website	Utilities	2,985	4	4	-
Empire Petroleum NYSE : EP Tulsa, Oklahoma, United States website	Oil/Gas Exploration	44	4	4	-
Matrix Service NASDAQ : MTRX Tulsa, Oklahoma, United States website	Construction	728	4	4	-
SandRidge Energy NYSE : SD Oklahoma City, Oklahoma, United States website	Oil/Gas Exploration	125	4	4	-
AAON NASDAQ : AAON Tulsa, Oklahoma, United States website	Machinery	1,201	3	3	-
BOK Financial NASDAQ : BOKF Tulsa, Oklahoma, United States website	Financial Services	1,936	3	3	-
Helmerich & Payne NYSE : HP Tulsa, Oklahoma, United States website	Oil/Gas Exploration	2,757	3	3	-
Alliance Resource Partners NASDAQ : ARLP Tulsa, Oklahoma, United States website	Metals/Mining	2,449	2	2	-
Energy and Environmental Services Public Edmond, Oklahoma, United States website	Chemicals	1	2	2	-
BancFirst NASDAQ : BANF Oklahoma City, Oklahoma, United States website	Financial Services	631	2	2	-

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