Our amended and restated certificate of incorporation became effective upon completion of our IPO in January 2015. Our amended and restated certificate of incorporation:

•

increased the number of authorized shares of capital stock to 1,300,000,000 shares, $0.0001 par value per share, of which 1,000,000,000 shares are designated as Class A common stock, 200,000,000 shares as designated as Class B common stock; and 100,000,000 shares are designated as preferred stock;

•

established that, on any matter that is submitted to a vote of the stockholders, the holder of each share of Class A common stock is entitled to 1 vote per share, while the holder of each share of Class B common stock is entitled to 10 votes per share;

•

established that, except with respect to voting, as discussed above, the rights of the holders of Class A and Class B common stock are identical; and

•

established that shares of our Class B common stock are voluntarily convertible into shares of our Class A common stock at the option of the holder, generally automatically convertible into shares of our Class A common stock upon transfer, and all outstanding shares of our Class B common stock will automatically convert into shares of our Class A common stock once the aggregate number of shares of our Class B common stock represents less than 5% of the then outstanding shares of Class A and Class B common stock.

On June 14, 2018, all of our outstanding shares of Class B common stock automatically converted into the same number of shares of Class A common stock pursuant to the terms of our Amended and Restated Certification of Incorporation. No additional shares of Class B common stock will be issued following such conversion. The conversion occurred pursuant to Article IV of the Amended and Restated Certificate of Incorporation, which provided that each one share of Class B common stock would convert automatically, without any further action, into one share of Class A common stock on the first trading day falling on or after the date on which the outstanding shares of Class B common stock represent less than 5% of the aggregate number of shares of the then outstanding Class A common stock and Class B common stock. On June 15, 2018, we filed a certificate with the Secretary of State of the State of Delaware effecting the retirement and cancellation of our Class B common stock. This certificate of retirement had the additional effect of eliminating the authorized Class B common stock, thereby reducing the total number of our authorized shares of common stock by 200,000,000.

Our Class A and Class B common stock are referred to as common stock throughout the notes to the financial statements, unless otherwise noted. After June 14, 2018, common stock refers to our Class A common stock.

As of January 31, 2019, we had authorized 1,000,000,000 shares of Class A common stock, par value of $0.0001 per share. As of January 31, 2019, 144,310,746 shares of Class A common stock were issued and outstanding.

As of January 31, 2018, we had authorized 1,000,000,000 shares of Class A common stock and 200,000,000 shares of Class B common stock, each at a par value of $0.0001 per share. As of January 31, 2018, 125,933,323 shares of Class A common stock and 11,383,525 shares of Class B common stock were issued and outstanding.

As of January 31, 2019 and 2018, we had authorized 100,000,000 shares of undesignated preferred stock, par value of $0.0001 per share. No shares were issued or outstanding in the same respective periods.

As of January 31, 2019 and 2018, we held an aggregate of 3,052,953 shares of common stock as treasury stock.