Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES
Oil	$ 38,791	$ 25,733	$ 105,111	$ 59,815
Natural gas	1,790	2,513	6,257	6,338
Natural gas liquids	5,495	3,036	12,753	6,249
Total revenues	46,076	31,282	124,121	72,402
OPERATING COSTS AND EXPENSES
Lease operating expense	4,843	5,407	14,509	14,990
Severance taxes	2,254	1,588	6,115	3,705
Impairment expense	833	92	833	66,740
Depreciation, depletion and amortization	12,842	10,330	33,362	28,258
General and administrative expense	4,944	7,295	18,809	19,483
Transaction costs	892	109	892	4,676
Accretion of asset retirement obligation	44	72	128	378
Total operating costs and expenses	26,652	24,893	74,648	138,230
Gain on sale of oil and gas properties	4,096	2,157	4,608	3,848
Income (loss) from operations	23,520	8,546	54,081	(61,980)
OTHER INCOME (EXPENSE)
Interest expense, net	(565)	(903)	(1,788)	(1,873)
Write-off of deferred financing costs	0	0	0	(526)
(Loss) gain on derivative contracts, net	(17,481)	(3,663)	(33,606)	4,137
Litigation settlement	(4,775)	0	(4,775)	0
Other income, net	37	(66)	434	(34)
Total other income (expense)	(22,784)	(4,632)	(39,735)	1,704
Income (loss) before income taxes	736	3,914	14,346	(60,276)
Income tax (expense) benefit	(172)	94	(119)	10,046
Net income (loss)	564	4,008	14,227	(50,230)
Net income attributable to noncontrolling interest	340	2,452	8,032	(35,392)
Net income (loss) attributable to Earthstone Energy, Inc.	$ 224	$ 1,556	$ 6,195	$ (14,838)
Net income (loss) per common share attributable to Earthstone Energy, Inc.:
Basic (in dollars per share)	$ 0.01	$ 0.07	$ 0.22	$ (0.66)
Diluted (in dollars per share)	$ 0.01	$ 0.07	$ 0.22	$ (0.66)
Weighted average common shares outstanding:
Basic (in shares)	28,257,376	22,905,023	28,011,298	22,638,977
Diluted (in shares)	28,311,759	22,905,023	28,108,365	22,638,977