Note 14 - Common Stock Reserved for Issuance (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Common Stock Reserved for Issuance [Table Text Block]

	March 31, 2023		December 31, 2022
Outstanding common stock warrants		1,061,924		1,061,924
Outstanding stock options and RSUs		1,012,456		875,343
Preferred shares		2,123,333		2,123,333
Shares reserved for conversion of future non-voting preferred share issuance		80,616		80,616
Shares reserved for conversion of future voting preferred share issuance		610,000		610,000
Shares reserved for future option grants and RSUs		71,633		25,080
Shares reserved for Lincoln Park		829,911		1,054,298
Shares reserved for Madryn Noteholders		547,592		547,713
Total common stock reserved for issuance		6,337,465		6,378,307