Note 11 - Net Loss Per Share Attributable to Common Stockholders

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Earnings Per Share [Text Block]

The following table (in thousands, except for loss per share) reconciles basic and diluted weighted average common shares outstanding for the years ended December 31, 2020 and 2019:

	Year Ended
	December 31,
	2020			2019
Weighted average common shares outstanding:
Basic		117,524			109,057
Dilutive unvested stock, convertible preferred stock, Common Stock Warrants and IPO Warrants		—			—
Diluted		117,524			109,057
Basic and diluted net loss per share attributable to common stockholders	$	(0.24	)	$	(0.45	)

Potentially dilutive securities that were not included in the diluted net loss per share computations because their effect would have been anti-dilutive were as follows (in thousands):

	Year Ended
	December 31,
	2020		2019
Unvested stock (1)		916		861
Convertible preferred stock		16,635		13,697
Common Stock Warrants		1,976		1,662
IPO Warrants(2)		12,082		12,082
Total potentially dilutive common shares		31,609		28,302

⁽¹⁾ Does not include 2.1 million shares and 3.6 million shares of unvested stock for the year ended  December 31, 2020 and 2019 because the performance conditions had not yet been satisfied as of   December 31, 2020 and 2019, respectively.

⁽²⁾ The IPO Warrants were issued in connection with our initial public offering and are exercisable at a price of $11.50 per share and expire July 24, 2022. The Company may redeem the Warrants at a price of $0.01 per IPO Warrant upon 30 days’ notice only if the last sale price of our common stock is at least $17.50 per share for any 20 trading days within a 30-trading day period. If the Company redeems the IPO Warrants in this manner, the Company will have the option to do so on a cashless basis with the issuance of an economically equivalent number of shares of Company common stock.