v3.20.1

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2018	$ 298,947		$ 6	$ 775,283	$ (108)	$ (476,234)
Beginning balances (in shares) at Dec. 31, 2018			62,142
Issuance of common stock upon exercise of vested options and vesting of restricted stock units	3,633			3,633
Issuance of common stock upon exercise of vested options and vesting of restricted stock units (in shares)			328
Stock-based compensation expense	7,765			7,765
Unrealized gain on available-for-sale investments	171				171
Accumulated depreciation upon adoption of ASU Topic 842	51					51
Net loss	(54,266)					(54,266)
Ending balances at Mar. 31, 2019	256,301		$ 6	786,681	63	(530,449)
Ending balances (in shares) at Mar. 31, 2019			62,470
Beginning balance at Dec. 31, 2019	104,024		$ 6	828,618	80	(724,680)
Beginning balances (in shares) at Dec. 31, 2019			63,779
Issuance of common stock pursuant to development arrangement	5,000			5,000
Issuance of common stock pursuant to development arrangement (in shares)			156
Issuance of preferred and common stock pursuant to financing arrangement	199,907		$ 1	199,906
Issuance of preferred and common stock pursuant to financing arrangement (in shares)		526	1,000
Issuance of common stock upon exercise of vested options and vesting of restricted stock units	2,098			2,098
Issuance of common stock upon exercise of vested options and vesting of restricted stock units (in shares)			288
Stock-based compensation expense	10,367			10,367
Foreign currency translation adjustment	10				10
Unrealized gain on available-for-sale investments	73				73
Net loss	(86,432)					(86,432)
Ending balances at Mar. 31, 2020	$ 235,047		$ 7	$ 1,045,989	$ 163	$ (811,112)
Ending balances (in shares) at Mar. 31, 2020		526	65,223

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Aimmune Therapeutics, Inc. 10-Q