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CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' DEFICIT (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2021

Dec. 31, 2020

CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' DEFICIT

Convertible preferred stock

​

​	​	​	​	​	​	​	​	​	​	​	​
​	​	March 31, 2021
​		Authorized Shares		Outstanding Shares		Net Carrying Value			Liquidation Preference		​
​	​	​	​	​	​	(in thousands)					​
Series D’	​	190,000,000	​	105,386,149	​	$	129,339	​	$	161,515	​
Series D	​	87,235,535	​	33,483,143	​	​	46,979	​	​	51,316	​
Series C	​	64,129,209	​	23,298,388	​	​	35,293	​	​	35,514	​
Series B	​	36,969,407	​	9,185,302	​	​	7,049	​	​	7,123	​
Series A’	​	30,991,277	​	4,158,503	​	​	1,702	​	​	1,865	​
Series A	​	21,288	​	16,740	​	​	593	​	​	751	​
Series 1	​	4,305	​	2,961	​	​	—	​	​	—	​
Total	​	409,351,021	​	175,531,186	​	$	220,955	​	$	258,084	​

The authorized, issued and outstanding shares of the convertible preferred stock and liquidation preferences as of the periods presented were as follows:

​

​	​	​	​	​	​	​	​	​	​	​
​		December 31, 2020
​	​	Authorized		Outstanding		Net Carrying			Liquidation
​	​	Shares	​	Shares	​	Value		​	Preference
​	​	​	​	​	​	(in thousands)
Series D’		190,000,000		105,386,149	​	$	129,339	​	$	161,516
Series D		87,235,535		33,392,701	​		46,587	​		51,178
Series C		64,129,209		23,298,388	​		35,293	​		35,514
Series B		36,969,407		9,185,302	​		7,049	​		7,123
Series A’		30,991,277		4,158,503	​		1,702	​		1,865
Series A		21,288		16,740	​		593	​		751
Series 1		4,305		2,961	​		—	​		—
Total		409,351,021		175,440,744	​	$	220,563	​	$	257,947

​

​	​	​	​	​	​	​	​	​	​	​
​	​	December 31, 2019
​		Authorized		Outstanding		Net Carrying			Liquidation
​	​	Shares	​	Shares	​	Value		​	Preference
​	​	​	​	​	​	(in thousands)
Series D’		102,000,000		78,932,752	​	$	99,588	​	$	120,972
Series D		87,235,535		35,586,652	​		49,772	​		54,540
Series C		64,129,209		41,305,384	​		62,570	​		62,962
Series B		36,969,407		9,126,596	​		7,071	​		7,078
Series A’		30,991,277		26,171,809	​		11,535	​		11,738
Series A		21,288		16,740	​		593	​		751
Series 1		4,305		2,961	​		—	​		—
Total		321,351,021		191,142,894	​	$	231,129	​	$	258,041

​

Common stock reserved for issuance

The Company had reserved shares of common stock for issuance, on an as-converted basis, as follows:

​	​	​	​	​
​		December 31,
​	​	2020		2019
Shares reserved for convertible preferred stock outstanding		175,440,744		191,142,894
Shares reserved for warrants to purchase shares of common stock		6,001,639		6,001,639
Shares reserved for warrants to purchase shares of preferred stock		44,296,242		29,624,663
Options issued and outstanding		51,379,939		42,846,649
Shares available for future option grants		11,048		4,299,140
Total		277,129,612		273,914,985

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Tabular disclosure of the common stock shares reserved for future issuance.

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Tabular disclosure of temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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