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Stockholders’ Equity | 3 Months Ended
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Mar. 31, 2022
Equity [Abstract] |
Stockholders’ Equity | 10. Stockholders’ Equity Common Stock As of March 31, 2022, 2,831,169 shares of common stock were issued and outstanding, 131,700 shares of common stock were reserved for issuance upon the exercise of outstanding warrants, and 497,330 shares of common stock were reserved for issuance under our 2015 Equity Incentive Plan, as amended (the “2015 Plan”). On March 2, 2020, we sold 955,000 shares of our common stock and certain subordinated notes in a private placement to accredited investors as follows:
| ● | 875,000 shares of our common stock at a purchase price of $4.00 per share, for aggregate gross proceeds of $3,500,000, and
| ● | 2,000 units at a purchase price of $1,000 per unit, with each unit consisting of $1,000 in 12% Subordinated Notes and 40 shares of our common stock, for aggregate gross proceeds of $2,000,000.
In connection with the private placement offering, we paid the placement agent $440,000 in cash, equal to 8% of the gross proceeds of the offering, along with 95,500 warrants to purchase shares of our common stock and reimbursement for the placement agent’s reasonable out of pocket expenses, FINRA filing fees and related legal fees. The warrants are exercisable at an exercise price at $4.00 per share for a period of five years after issuance, contain customary cashless exercise provisions and anti-dilution protection and are entitled to limited piggyback registration rights. Underwriting expense of $236,761 and debt issuance costs of $135,291 were recorded for the issuance of the March 2, 2020 warrants, utilizing the Black-Scholes valuation model. The fair value of warrants issued was determined to be $3.90. Underwriting expense of $307,867 and debt issuance costs of $175,924 was recorded for the placement agent cash fee and other related legal fees. For the three months ended March 31, 2022 and 2021, interest expense of $25,935 was recorded as amortization of the debt issuance costs for this private placement offering. Warrants The following sets forth the warrants to purchase our common stock that were outstanding as of March 31, 2022:
| ● | Warrants to purchase 3,000 shares of common stock at an exercise price of $15.00 per share exercisable until September 21, 2022, issued to certain 5% stockholders.
| ● | Warrants to purchase 17,200 shares of common stock at an exercise price of $12.50 per share exercisable until between November 17, 2022 and November 30, 2022, issued to the placement agent in connection with private placements of our convertible promissory notes.
| ● | Warrants to purchase 16,000 shares of common stock at an exercise price of $9.00 per share exercisable until between September 20, 2023 and September 26, 2023, issued to the placement agent in connection with private placements of our convertible promissory notes.
| ● | Warrants to purchase 95,500 shares of common stock at an exercise price of $4.00 per share exercisable until March 2, 2025, issued to the placement agent in connection with private placements of our convertible promissory notes.
No warrants were issued during the three months ended March 31, 2022 or 2021.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI https://asc.fasb.org/topic&trid=2208762 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 14 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496171-112644 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 14 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496171-112644 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (h) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 14 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496171-112644 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496189-112644 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 16 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496180-112644 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 6 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126731327&loc=SL126733271-114008 + Details
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