Impact of the Restatement

The impact of the restatement on the consolidated balance sheets, statements of operations and statements of cash flows for the Affected Periods is presented below. The restatement had no impact on net cash flows from operating, investing or financing activities.

Impact of the Restatement and Revision - 2019

($ in thousands except share and per share amounts)

Consolidated Statements of Operations and Comprehensive Loss



	Year Ended December 31, 2019
	As Reported			Adjustments		As Revised
Change in fair value of warrant liability	$	(264	)	$	264	$	—
Total other income (expense), net	47			264		311
Net loss and comprehensive loss	(30,641		)	264		(30,377		)
Net loss per share, basic and diluted	$	(1.17	)	$	0.01	$	(1.16	)
Weighted-average common shares outstanding, basic and diluted	26,254,119			—		26,254,119

Consolidated Balance Sheets



	December 31, 2019
	As Reported			Adjustments			As Revised
Warrant liability	$	1,504		$	(1,504	)	$	—
Total liabilities	52,884			(1,504		)	51,380
Additional paid-in-capital	180,047			17,806			197,853
Accumulated deficit	(203,682		)	(16,302		)	(219,984		)
Total stockholders' (deficit) equity	(23,787		)	1,504			(22,283		)

Consolidated Statements of Cash Flows



	Year Ended December 31, 2019
	As Reported			Adjustments			As Revised
Net loss	$	(30,641	)	$	264		$	(30,377	)
Change in fair value of warrant liability	264			(264		)	—

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Three Months Ended September 30, 2019
	As Reported			Adjustments			As Restated
Change in fair value of warrant liability	$	1,160		$	(1,160	)	$	—
Total other income (expense), net	1,236			(1,160		)	76
Net loss and comprehensive loss	(8,336		)	(1,160		)	(9,496		)
Net loss per share, basic and diluted	$	(0.32	)	$	(0.04	)	$	(0.36	)
Weighted-average common shares outstanding, basic and diluted	26,189,454			—			26,189,454

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Nine Months Ended September 30, 2019
	As Reported			Adjustments		As Restated
Change in fair value of warrant liability	$	(9,030	)	$	9,030	$	—
Total other income (expense), net	(8,767		)	9,030		263
Net loss and comprehensive loss	(33,459		)	9,030		(24,429		)
Net loss per share, basic and diluted	$	(1.28	)	$	0.34	$	(0.94	)
Weighted-average common shares outstanding, basic and diluted	26,108,870			—		26,108,870

Condensed Consolidated Balance Sheets



	September 30, 2019
	As Reported			Adjustments			As Restated
Warrant liability	$	10,270		$	(10,270	)	$	—
Total liabilities	64,322			(10,270		)	54,052
Additional paid-in-capital	179,047			17,806			196,853
Accumulated deficit	(206,500		)	(7,536		)	(214,036		)
Total stockholders' (deficit) equity	(27,605		)	10,270			(17,335		)

Condensed Consolidated Statements of Cash Flows



	Nine Months Ended September 30, 2019
	As Reported			Adjustments			As Restated
Net loss	$	(33,459	)	$	9,030		$	(24,429	)
Change in fair value of warrant liability	9,030			(9,030		)	—

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Three Months Ended June 30, 2019
	As Reported			Adjustments		As Restated
Change in fair value of warrant liability	$	(9,802	)	$	9,802	$	—
Total other income (expense), net	(9,699		)	9,802		103
Net loss and comprehensive loss	(18,098		)	9,802		(8,296		)
Net loss per share, basic and diluted	$	(0.69	)	$	0.37	$	(0.32	)
Weighted-average common shares outstanding, basic and diluted	26,069,734			—		26,069,734

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Six Months Ended June 30, 2019
	As Reported			Adjustments		As Restated
Change in fair value of warrant liability	$	(10,190	)	$	10,190	$	—
Total other income (expense), net	(10,003		)	10,190		187
Net loss and comprehensive loss	(25,123		)	10,190		(14,933		)
Net loss per share, basic and diluted	$	(0.96	)	$	0.39	$	(0.57	)
Weighted-average common shares outstanding, basic and diluted	26,067,909			—		26,067,909

Condensed Consolidated Balance Sheets



	June 30, 2019
	As Reported			Adjustments			As Restated
Warrant liability	$	11,430		$	(11,430	)	$	—
Total liabilities	67,725			(11,430		)	56,295
Additional paid-in-capital	178,100			17,806			195,906
Accumulated deficit	(198,164		)	(6,376		)	(204,540		)
Total stockholders' (deficit) equity	(20,216		)	11,430			(8,786		)

Condensed Consolidated Statements of Cash Flows



	Six Months Ended June 30, 2019
	As Reported			Adjustments			As Restated
Net loss	$	(25,123	)	$	10,190		$	(14,933	)
Change in fair value of warrant liability	10,190			(10,190		)	—

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Three Months Ended March 31, 2019
	As Reported			Adjustments		As Restated
Change in fair value of warrant liability	$	(388	)	$	388	$	—
Total other income (expense), net	(304		)	388		84
Net loss and comprehensive loss	(7,025		)	388		(6,637		)
Net loss per share, basic and diluted	$	(0.27	)	$	0.02	$	(0.25	)
Weighted-average common shares outstanding, basic and diluted	26,066,064			—		26,066,064

Condensed Consolidated Balance Sheets



	March 31, 2019
	As Reported			Adjustments			As Restated
Warrant liability	$	1,628		$	(1,628	)	$	—
Total liabilities	24,156			(1,628		)	22,528
Additional paid-in-capital	177,855			17,806			195,661
Accumulated deficit	(180,066		)	(16,178		)	(196,244		)
Total stockholders' (deficit) equity	(2,363		)	1,628			(735		)

Condensed Consolidated Statements of Cash Flows



	Three Months Ended March 31, 2019
	As Reported			Adjustments			As Restated
Net loss	$	(7,025	)	$	388		$	(6,637	)
Change in fair value of warrant liability	388			(388		)	—

Impact of the Restatement - 2018

($ in thousands except share and per share amounts)

Consolidated Statements of Operations and Comprehensive Loss



	Year Ended December 31, 2018
	As Reported			Adjustments			As Restated
Change in fair value of warrant liability	$	16,566		$	(16,566	)	$	—
Total other income (expense), net	15,888			(16,566		)	(678		)
Net loss and comprehensive loss	(12,673		)	(16,566		)	(29,239		)
Net loss per share, basic and diluted	$	(0.49	)	$	(0.64	)	$	(1.13	)
Weighted-average common shares outstanding, basic and diluted	25,795,721			—			25,795,721

Consolidated Balance Sheets



	December 31, 2018
	As Reported			Adjustments			As Restated
Warrant liability	$	1,240		$	(1,240	)	$	—
Total liabilities	21,164			(1,240		)	19,924
Additional paid-in-capital	177,677			17,806			195,483
Accumulated deficit	(172,327		)	(16,566		)	(188,893		)
Total stockholders' equity	5,198			1,240			6,438

Consolidated Statements of Cash Flows



	Year Ended December 31, 2018
	As Reported			Adjustments			As Restated
Net loss	$	(12,673	)	$	(16,566	)	$	(29,239	)
Change in fair value of warrant liability	(16,566		)	16,566			—

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Three Months Ended September 30, 2018
	As Reported			Adjustments			As Restated
Change in fair value of warrant liability	$	1,464		$	(1,464	)	$	—
Total other income (expense), net	1,313			(1,464		)	(151		)
Net loss and comprehensive loss	(7,031		)	(1,464		)	(8,495		)
Net loss per share, basic and diluted	$	(0.27	)	$	(0.06	)	$	(0.33	)
Weighted-average common shares outstanding, basic and diluted	26,046,666			—			26,046,666

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Nine Months Ended September 30, 2018
	As Reported			Adjustments			As Restated
Change in fair value of warrant liability	$	5,733		$	(5,733	)	$	—
Total other income (expense), net	5,222			(5,733		)	(511		)
Net loss and comprehensive loss	(19,826		)	(5,733		)	(25,559		)
Net loss per share, basic and diluted	$	(0.77	)	$	(0.22	)	$	(0.99	)
Weighted-average common shares outstanding, basic and diluted	25,707,978			—			25,707,978

Condensed Consolidated Balance Sheets



	September 30, 2018
	As Reported			Adjustments			As Restated
Warrant liability	$	12,073		$	(12,073	)	$	—
Total liabilities	31,991			(12,073		)	19,918
Additional paid-in-capital	177,336			17,806			195,142
Accumulated deficit	(179,480		)	(5,733		)	(185,213		)
Total stockholders' (deficit) equity	(2,296		)	12,073			9,777

Condensed Consolidated Statements of Cash Flows



	Nine Months Ended September 30, 2018
	As Reported			Adjustments			As Restated
Net loss	$	(19,826	)	$	(5,733	)	$	(25,559	)
Change in fair value of warrant liability	(5,733		)	5,733			—

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Three Months Ended June 30, 2018
	As Reported			Adjustments			As Restated
Change in fair value of warrant liability	$	711		$	(711	)	$	—
Total other income (expense), net	569			(711		)	(142		)
Net loss and comprehensive loss	(7,578		)	(711		)	(8,289		)
Net loss per share, basic and diluted	$	(0.29	)	$	(0.03	)	$	(0.32	)
Weighted-average common shares outstanding, basic and diluted	26,039,169			—			26,039,169

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Six Months Ended June 30, 2018
	As Reported			Adjustments			As Restated
Change in fair value of warrant liability	$	4,269		$	(4,269	)	$	—
Total other income (expense), net	3,909			(4,269		)	(360		)
Net loss and comprehensive loss	(12,795		)	(4,269		)	(17,064		)
Net loss per share, basic and diluted	$	(0.50	)	$	(0.17	)	$	(0.67	)
Weighted-average common shares outstanding, basic and diluted	25,535,827			—			25,535,827

Condensed Consolidated Balance Sheets



	June 30, 2018
	As Reported			Adjustments			As Restated
Warrant liability	$	13,537		$	(13,537	)	$	—
Total liabilities	34,359			(13,537		)	20,822
Additional paid-in-capital	176,953			17,806			194,759
Accumulated deficit	(172,449		)	(4,269		)	(176,718		)
Total stockholders' equity	4,352			13,537			17,889

Condensed Consolidated Statements of Cash Flows



	Six Months Ended June 30, 2018
	As Reported			Adjustments			As Restated
Net loss	$	(12,795	)	$	(4,269	)	$	(17,064	)
Change in fair value of warrant liability	(4,269		)	4,269			—

Condensed Consolidated Statements of Operations and Comprehensive Loss



	Three Months Ended March 31, 2018
	As Reported			Adjustments			As Restated
Change in fair value of warrant liability	$	3,558		$	(3,558	)	$	—
Total other income (expense), net	3,340			(3,558		)	(218		)
Net loss and comprehensive loss	(5,217		)	(3,558		)	(8,775		)
Net loss per share, basic and diluted	$	(0.21	)	$	(0.14	)	$	(0.35	)
Weighted-average common shares outstanding, basic and diluted	25,026,890			—			25,026,890

Condensed Consolidated Balance Sheets



	March 31, 2018
	As Reported			Adjustments			As Restated
Warrant liability	$	14,248		$	(14,248	)	$	—
Total liabilities	34,923			(14,248		)	20,675
Additional paid-in-capital	176,402			17,806			194,208
Accumulated deficit	(164,871		)	(3,558		)	(168,429		)
Total stockholders' equity	11,379			14,248			25,627

Condensed Consolidated Statements of Cash Flows



	Three Months Ended March 31, 2018
	As Reported			Adjustments			As Restated
Net loss	$	(5,217	)	$	(3,558	)	$	(8,775	)
Change in fair value of warrant liability	(3,558		)	3,558			—