Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stockholders' Equity and Equity-linked Instruments - Schedule of Preferred Stock (Details)

v3.24.2.u1
Note 6 - Stockholders' Equity and Equity-linked Instruments - Schedule of Preferred Stock (Details) - USD ($)
 6 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Nov. 30, 2023
Aug. 23, 2023
Shares Purchased (in shares) 33,968      
Shares Issued - Exchanged 6,367      
Conversions / Exchanges (in shares) (17,477)      
Outstanding (in shares) 22,858 23,656    
Gross Proceeds $ 33,968,000      
Fees 4,253,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 29,715,000      
Placement Agent Warrants (in shares) [1] 1,184,000      
Series A Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 12.4      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 0      
Shares Purchased (in shares) 5,359      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) (4,919)      
Outstanding (in shares) 440      
Gross Proceeds $ 5,359,000      
Fees 752,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 4,607,000      
Placement Agent Warrants (in shares) [1] 62,000      
Series A-2 Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 13.29      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 0      
Shares Purchased (in shares) 1,297      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) (834)      
Outstanding (in shares) 463      
Gross Proceeds $ 1,297,000      
Fees 169,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 1,128,000      
Placement Agent Warrants (in shares) [1] 14,000      
Series A-3 Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 13.41      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 0      
Shares Purchased (in shares) 1,733      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) (1,418)      
Outstanding (in shares) 315      
Gross Proceeds $ 1,733,000      
Fees 225,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 1,508,000      
Placement Agent Warrants (in shares) [1] 18,000      
Series A-4 Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 7.6      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 0      
Shares Purchased (in shares) 1,934      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) (1,458)      
Outstanding (in shares) 476      
Gross Proceeds $ 1,934,000      
Fees 251,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 1,683,000      
Placement Agent Warrants (in shares) [1] 36,000      
Series A-5 Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 11.09      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 0      
Shares Purchased (in shares) 2,299      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) (1,519)      
Outstanding (in shares) 780      
Gross Proceeds $ 2,299,000      
Fees 299,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 2,000,000      
Placement Agent Warrants (in shares) [1] 30,000      
Series A A Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 9.43      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 1.89      
Shares Purchased (in shares) 7,680      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) (3,289)      
Outstanding (in shares) 4,391   7,322 10,706
Gross Proceeds $ 7,680,000      
Fees 966,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 6,714,000      
Placement Agent Warrants (in shares) [1] 114,000      
Series AA-2 Convertible Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 10.43      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 2.09      
Shares Purchased (in shares) 1,500      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) (1,500)      
Outstanding (in shares) 0      
Gross Proceeds $ 1,500,000      
Fees 130,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 1,370,000      
Placement Agent Warrants (in shares) [1] 13,000      
Series AA-3 Convertible Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 9.5      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 1.9      
Shares Purchased (in shares) 1,025      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) (634)      
Outstanding (in shares) 391      
Gross Proceeds $ 1,025,000      
Fees 133,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 892,000      
Placement Agent Warrants (in shares) [1] 15,000      
Series AA-4 Convertible Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 9.28      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 1.86      
Shares Purchased (in shares) 1,026      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) (511)      
Outstanding (in shares) 515      
Gross Proceeds $ 1,026,000      
Fees 133,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 893,000      
Placement Agent Warrants (in shares) [1] 16,000      
Series AA-5 Convertible Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 10.6      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 2.12      
Shares Purchased (in shares) 550      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) 0      
Outstanding (in shares) 550      
Gross Proceeds $ 550,000      
Fees 72,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 478,000      
Placement Agent Warrants (in shares) [1] 7,000      
Series AAA Convertible Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 1.67      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 0      
Shares Purchased (in shares) 5,377      
Shares Issued - Exchanged 4,011      
Conversions / Exchanges (in shares) (1,215)      
Outstanding (in shares) 8,173      
Gross Proceeds $ 5,377,000      
Fees 645,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 4,732,000      
Placement Agent Warrants (in shares) [1] 466,000      
Series AAA-2 Convertible Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 1.71      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 0      
Shares Purchased (in shares) 2,978      
Shares Issued - Exchanged 2,356      
Conversions / Exchanges (in shares) (180)      
Outstanding (in shares) 5,154      
Gross Proceeds $ 2,978,000      
Fees 357,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 2,621,000      
Placement Agent Warrants (in shares) [1] 253,000      
Series AAA Junior Preferred Stock [Member]        
Conversion Price - At Issuance (in dollars per share) $ 1.25      
Adjusted Conversions Price (in dollars per share) [2],[3],[4] $ 0      
Shares Purchased (in shares) 1,210      
Shares Issued - Exchanged -      
Conversions / Exchanges (in shares) 0      
Outstanding (in shares) 1,210      
Gross Proceeds $ 1,210,000      
Fees 121,000      
Proceeds from issuance of preferred stock, net of issuance costs (Note 6) $ 1,089,000      
Placement Agent Warrants (in shares) [1] 140,000      
[1] Issued (or to be issued) upon final closing of the respective Preferred Stock Offerings, effective as of the respective individual series closing dates. Pursuant to the terms of the Placement Agent Agreements, we agreed to issue to the Placement Agent,  following the final closing under the individual Preferred Stock Offerings, five-year warrants to purchase 14.5% of the shares of common stock issuable upon conversion of the respective series of Convertible Preferred Stock sold in the Preferred Stock Offerings, at an exercise price equal to the applicable Preferred Stock Offering conversion price.
[2] The Conversion price for Series AA Preferred Stock outstanding as of August 23, 2023, totaling 10,706 shares of Series AA Preferred Stock, was adjusted to $2.60 as a result of the Series AA Down Round Feature described below.
[3] The Conversion prices for the Series AA Preferred Stock outstanding as of November 30, 2023, totaling 7,322 shares of Series AA Preferred Stock, were adjusted to the conversion prices shown in the table above, as a result of the Series AA Down Round Feature described below.
[4] The triggering of the Down Round Feature for the Series AA Preferred Stock, which occurred in August 2023 and November 2023, resulted in a deemed dividend totaling $7,567,000, which was charged to retained earnings in the December 31, 2023 consolidated balance sheet.