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Capital Stock and Warrants (Tables)

12 Months Ended

Dec. 31, 2023

Information with regard to outstanding warrants to purchase common stock

The following table summarizes information with regard to outstanding warrants to purchase common stock as of December 31, 2023:


Issuance	Number of Common Shares Issuable Upon Exercise of Outstanding Warrants	Exercise Price		Expiration Date
August 2023 Public Offering	5,750,000	$	0.65	August 15, 2028
May 2023 Registered Direct and Concurrent Private Placement	1,006,710	$	2.98	November 6, 2028
November 2019 Public Offering - Series B	395,528	$	8.00	May 19, 2027
November 2019 Private Placement - Series B	718,750	$	8.00	May 19, 2027
July 2017 Registered Direct Offering	14,270	$	201.60	January 7, 2024
Consultant	750	$	116.00	September 11, 2024
Total	7,886,008

Schedule of primary rights of convertible preferred stockholders, and common stock shares reserved for future issuance

The following shares of common stock were reserved for future issuance upon exercise of stock options, vesting of Restricted Stock Units ("RSUs") and conversion of outstanding warrants:


	December 31, 2023	December 31, 2022
Stock Options	1,338,921	979,748
RSUs	—	27,123
Warrants	7,886,008	1,129,298
Total number of common shares reserved for future issuance	9,224,929	2,136,169

- Definition

Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding.

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+ Details