Stockholders’ Equity

Preferred Stock

We have 20,000,000 authorized shares of undesignated preferred stock, the rights, preferences and privileges of which may be designated from time to time by our board of directors. As of January 31, 2019, there were no shares of preferred stock issued or outstanding.

Class A and Class B Common Stock

We have two classes of authorized common stock, Class A common stock and Class B common stock. As of January 31, 2019, we had 2,000,000,000 authorized shares of Class A common stock and 250,000,000 authorized shares of Class B common stock, with each class having a par value of $0.0001 per share.

In December 2018, all outstanding shares of our Class B common stock automatically converted into the same number of shares of our Class A common stock pursuant to the terms of our amended and restated certificate of incorporation, which provided that each share of our Class B common stock would convert automatically into Class A common stock when the outstanding shares of Class B common stock represent less than 10% of the aggregate number of shares of the then outstanding Class A common stock and Class B common stock. No additional Class B shares will be issued following such conversion. As of January 31, 2019, 243,523,831 shares of Class A common stock were issued and outstanding.

Prior to the conversion, the rights of the holders of Class A and Class B common stock were identical, except with respect to voting. Each share of Class A common stock was entitled to one vote per share while each share of Class B common stock was entitled to 10 votes per share.

Class A and Class B common stock are referred to as common stock throughout the notes to the consolidated financial statements, unless otherwise noted.

Common Stock Reserved for Issuance

As of January 31, 2019, we had reserved shares of Class A common stock for future issuance as follows:



	January 31, 2019
Shares underlying outstanding stock options	35,465,543
Shares underlying outstanding restricted stock units	21,917,550
Shares reserved for future equity awards	15,792,845
Shares reserved for future employee stock purchase plan awards	1,318,558
Total	74,494,496

Repurchase of Common Stock

Concurrent with the issuance of the Notes (see Note 6), we repurchased and retired 1,008,573 shares, or $20.0 million, of our Class A common stock at $19.83 per share, which was equal to the closing price per share of our Class A common stock on April 4, 2018, the date of the pricing of our offering of the Notes. The repurchased shares were recorded as a reduction of additional paid-in capital on the consolidated balance sheet.