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, 2019, a total of 5,328,423 shares of Class B Common Stock were issued and outstanding and 11,493,779 shares of Class B Common Stock were reserved for issuance upon the exercise of outstanding stock options under the Company’s 2015 Equity Incentive Plan. As of December 31, 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, 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 $1.5253 for Series A, B, C and D Preferred Stock, respectively, by the conversion price of $0.25, $0.6562, $0.9539 and $1.5253 for Series A, B, C and D Preferred Stock, respectively.
The Preferred Stock automatically converts into shares of Class A Common Stock at the earlier of (i) the closing of an initial public offering of the Company’s Common Stock at a price per share of at least $3.05 with gross proceeds to the Company of at least $50,000 or (ii) the date and time, or the occurrence of an event, specified by vote or written consent of the holders of two-thirds of the voting power of the then outstanding shares of Series D Preferred Stock, voting together as a separate class.
Redemption
After the fifth anniversaries of the Series B, C and D original issuance dates, respectively, shares of the respective class of Preferred Stock may be redeemed at a price equal to the original issue price per share, plus all dividends accrued but unpaid and all declared but unpaid other dividends (the “Redemption Price”), in two semi-annual installments commencing not more than 180 days after receipt by the Company of written notice from two-thirds of the voting power of then outstanding shares of each respective class requesting redemption. No explicit redemption rights exist for Series A Preferred Stock. Since the Series B, C, and D are redeemable upon a liquidation event, which is not considered to be within the Company’s control, they have been classified in temporary equity on the accompanying consolidated balance sheets.
Dividends
Dividends accrue at a rate of 8% per annum on the original issuance price of Series B, C and D Preferred Stock (the “Accruing Dividends”). Accruing Dividends become due and payable if the Preferred