purchase 368,779 additional shares of Series D Preferred Stock (the “Series D Warrant”) at a purchase price of $1.53 per share. The expiration date of the warrant is September 27, 2029. The holder may at any time and from time to time exercise this Warrant, in whole or in part, and on any exercise of the Warrant, the Holder may elect to receive Shares equal to the value of the Warrant or portion. The initial warrant value of $192 was recorded as a debt discount and is being amortized over the term of the Innovatus Term Loan. See Note 5 for valuation of Warrant.
In 2019 the Company entered into two leases for computer equipment and furniture which are classified as capital lease obligations in the consolidated balance sheets. In 2020, the Company entered into a lease for staining equipment which is classified as a capital lease in the consolidated balance sheets. As of December 31, 2020 and 2019, the current portion of the lease obligations totaled $197 and $80, respectively, and the long-term portion totaled $277 and $205, respectively.
(10) Stockholder’s equity
Common Stock
The Company has authorized 79,042,222 shares of Common Stock, $0.00001 par value per share, of which 62,220,020 shares are designated Class A common stock (“Class A Common Stock”) and 16,822,202 shares are designated Class B common stock (“Class B Common Stock” or collectively the “Common Stock”). Each share of Class A Common Stock is entitled to one vote. The holders of Class B Common Stock are not entitled to vote. The holders of Common Stock are also entitled to receive dividends whenever funds are legally available and when declared by the board of directors, subject to the prior rights of holders of all classes of stock outstanding. As of December 31, 2020 and 2019, a total of 2,563,765 and 2,286,872 shares of Class B Common Stock were issued and outstanding, respectively, and 4,656,050 and 4,932,952 shares of Class B Common Stock were reserved for issuance upon the exercise of outstanding stock options, respectively, under the Company’s 2015 Equity Incentive Plan. As of December 31, 2020 and 2019, no shares of Class A Common Stock were issued and outstanding.
Preferred Stock
The Company has authorized 62,220,020 shares of Preferred Stock, $0.00001 par value per share, of which 5,013,333 shares were designated Series A convertible preferred stock (“Series A Preferred Stock), 13,715,330 shares were designated Series B redeemable convertible preferred stock (“Series B Preferred Stock”), 26,732,361 shares were designated Series C redeemable convertible preferred stock (“Series C Preferred Stock”), and 16,758,996 shares were designated Series D redeemable convertible preferred stock (“Series D Preferred Stock, or collectively the “Preferred Stock”).
In November 2015, the Company issued 5,013,333 shares of Series A Preferred Stock at a purchase price of $0.25 per share. The issuance resulted in cash proceeds of $1,253.
In July 2017, the Company issued 13,715,330 shares of Series B Preferred Stock at a purchase price of $0.6562 per share. The issuance resulted in cash proceeds of $8,943, net of issuance costs.
In September and November 2018, the Company issued 25,684,033 and 1,048,328 shares of Series C Preferred Stock, respectively, at a purchase price of $0.9539 per share. The issuances resulted in cash proceeds of $25,437, net of issuance costs.
On September 27, 2019, the Company issued 16,390,217 shares of Series D Preferred Stock at a purchase price of $1.5253 per share. The issuance resulted in cash proceeds of $24,824 net of issuance costs (the “Series D Financing”).
As of December 31, 2020 and 2019, the Preferred Stock have the following rights, preferences and privileges:
Conversion rights
Each share of Preferred Stock is convertible at the option of the holder into Class A Common Stock shares at any time after the date of issuance. The number of Class A Common Stock shares to be issued in the event of a conversion is determined by dividing the original issue price of $0.25, $0.6562, $0.9539 and