Capitalization	9 Months Ended
Sep. 30, 2016
Capitalization
Capitalization	Note 7—Capitalization In February 2016, the Company increased the authorized shares of common stock from 130,000,000 shares to 142,000,000 shares and the authorized shares of convertible preferred stock from 68,520,540 shares to 80,021,127 shares, of which 11,500,587 shares were designated as Series C preferred stock (“Series C preferred stock”). In September 2016, and in preparation of the Company’s IPO and the establishment of two classes of common stock, each share of the then outstanding common stock was reclassified to Class B common stock. The Class A and Class B have the same rights and preferences including rights to dividends, except the Class B is entitled to ten votes per share and the Class A is entitled to one vote per share. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. In addition, each share of Class B common stock will convert automatically into one share of Class A common stock upon any transfer, except for certain transfers described in the Company’s restated certificate of incorporation, including, without limitation, certain transfers for tax and estate planning purposes. In addition, upon the earlier of (1) the date on which the outstanding shares of Class B common stock represent less than 10% of the aggregate number of the then outstanding shares of Class A common stock and Class B common stock and (2) the affirmative vote or written consent of the holders of at least 662/3% of the outstanding shares of Class B common stock, all outstanding shares of Class B common stock will convert automatically into Class A common stock, and no additional shares of Class B common stock will be issued. Prior to the reclassification of existing common stock to Class B common stock, the existing common stock was entitled to one vote per share. Immediately prior to the completion of the IPO on September 26, 2016, the Company amended its certificate of incorporation to amend the number of authorized shares of common stock to 1,095,000,000 shares, par value $0.000001 per share, and 100,000,000 shares of preferred stock, par value, $0.000001 per share. The authorized common stock consists of 1,000,000,000 shares of Class A common stock and 95,000,000 shares of Class B common stock. No shares of the newly authorized preferred stock are outstanding at September 30, 2016. The Company’s board of directors has the discretion to determine the rights, preferences, privileges and restrictions, including voting rights, dividend rights, conversion rights, redemption privileges and liquidation preferences, of each series of preferred stock. Initial Public Offering On September 26, 2016, the Company closed its IPO whereby 4,666,667 shares of Class A common stock were issued and sold by the Company and 700,000 shares of Class A common stock were sold by selling stockholders, pursuant to the underwriters’ exercise of their over-allotment option, at the IPO price of $18.00 per share. The Company received net proceeds from the offering of approximately $78.1 million after deducting underwriting discounts and commissions of $5.9 million, but before deducting offering costs of $4.5 million. The Company did not receive any proceeds from the sales of shares by the selling stockholders. In connection with the Company’s IPO: (i) all shares of the Company’s outstanding Series Seed, A-1, A-2, A-3, B and C convertible preferred stock automatically converted into an aggregate 22,078,637 shares of Class B common stock on a one for one-third basis, including the 700,000 shares sold by selling shareholders which were converted from shares of Class B common stock to shares of Class A common stock prior to sale; and (ii) warrants exercisable for 1,382,505 shares of convertible preferred stock were automatically converted into warrants exercisable for 460,834 shares of Class B common stock and net exercised resulting in the issuance of 448,545 shares of Class B common stock based on the IPO price of $18.00 per share and taking into account the 1-for-3 reverse stock split. In addition, upon completion of the IPO, costs associated with the IPO of $4.5 million were reclassified from other assets, non-current to additional paid-in capital. Convertible Preferred Stock In February 2016, the Company issued 11,500,587 shares of Series C convertible preferred stock for $60.0 million and used $54.0 million of the proceeds to repurchase 3,897,928 and 8,485,350 shares of Series Seed preferred stock (including shares issued upon exercise of warrant described below) and Series A preferred stock (comprising shares of Series A-1, A-2 and A-3), respectively, each at 80% of the Series C offering price per share of $5.22, and 188,786 shares of common stock at a price per share of $12.51. Warrants to purchase 808,135 shares of Seed preferred stock were net exercised, resulting in the issuance of 788,755 shares of Series Seed preferred stock of which 614,052 shares were then repurchased. The repurchase price of the convertible preferred stock, including legal costs, of $51.8 million exceeded the carrying value of $4.6 million at the date of repurchase. The repurchase price in excess of the then carrying value of the preferred stock of $47.2 million was recorded as a reduction to additional paid-in capital of $1.2 million and a reduction to retained earnings of $46.0 million. For the computation of earnings per share for the nine months ended September 30, 2016, the repurchase price in excess of the then carrying value of the preferred stock of $47.2 million was recorded as an increase to net loss attributable to common stockholders. Rights and Preferences of Convertible Preferred Stock Prior to the Company’s IPO, the rights and preferences of convertible preferred stock were as follows: Voting Rights: Each holder of convertible preferred stock was entitled to the number of votes equal to the number of shares of common stock into which such shares of preferred stock could be converted. The holders of convertible preferred stock and the holders of common stock would vote together as a single class on all matters. Dividends Rights: The holders of Series C preferred stock had a preferential dividend right whereby they were entitled to receive a dividend prior to any other class of stock. After payment of any dividend to the holders of Series C preferred stock, the holders of Series B preferred stock had a preferential dividend right whereby they were entitled to receive a dividend prior to any other class of stock. After payment of any dividend to the holders of Series C preferred stock and the holders of Series B preferred stock, the other holders of convertible preferred stock on a pari passu basis were entitled to receive dividends declared by the Board of Directors out of any assets of the Company legally available prior to the payment of dividends to the holders of common Stock. The dividend rate was $0.008 for holders of Series Seed preferred, $0.010087 for holders of Series A-1 preferred stock, $0.011758 for Series A-2 preferred stock, $0.014698 for Series A-3 preferred stock, $0.194 for Series B preferred stock and $0.417 for Series C preferred stock, per share per annum, when and if declared. If a common stock dividend was declared, such that the convertible preferred holders’ share, on an as-converted basis, would exceed the amount declared under the specified preferred stock dividend rate, the convertible preferred holders were entitled to receive the greater amount, as if the convertible preferred stock was converted to common stock. Liquidation Preferences: In the event of any liquidation event, either voluntary or involuntary, the holders of Series B preferred stock and the holders of Series C preferred stock were entitled to receive, prior to the other holders of convertible preferred stock or common stock, on a pro rata and pari passau basis, an amount per share equal to the greater of their respective original issue price, plus any dividends declared but unpaid thereon or an amount as would have been payable had their shares of preferred stock immediately converted to common stock. After payment of the amounts to the Series B preferred stockholders and the Series C preferred stockholders, the other holders of convertible preferred stock were entitled to receive a liquidation preference of the greater of (1) the original issue price, plus any dividend declared but unpaid thereon and (2) such amount per share as would have been payable had all shares of the preferred stock been converted into common stock immediately prior to liquidation, dissolution or winding up. Thereafter, any remaining assets available for distribution were to be distributed among the holders of shares of common stock pro rata based on the number of shares held by each holder. The liquidation preference provisions of the convertible preferred stock were considered contingent redemption provisions because there were certain elements that were not solely within the control of the Company, such as a change in control of the Company. Accordingly, prior to the conversion to common stock, the Company presented the convertible preferred stock within the mezzanine portion of the accompanying consolidated balance sheets. Conversion Features: Each share of convertible preferred stock was convertible at any time, at the option of the holder thereof, into such number of fully paid non-assessable shares of common stock as was determined by dividing the original issue price by the conversion price applicable to such share, in effect on the date of the conversion. The original issue price per share was $0.10 for Series Seed preferred stock, $0.126084 for Series A-1 preferred stock, $0.146976 for Series A-2 preferred stock, $0.183720 for Series A-3 preferred stock, $2.431 for Series B preferred stock and $5.217125 for Series C preferred stock. Prior to the IPO, the conversion price per share, as adjusted for the reverse stock split described in Note 2, was $0.30 for Series Seed preferred stock, $0.378252 for Series A-1 preferred stock, $0.440928 for Series A-2 preferred stock, $0.55116 for Series A-3 preferred stock, $7.293 for Series B preferred stock and $15.651375 for Series C preferred stock. Each share of convertible preferred stock would automatically convert into shares of common stock at its then effective conversion rate immediately upon the earlier of (1) a Qualified IPO, and (2) the date specified by a vote of the holders of at least a majority of all then-outstanding shares of convertible preferred stock, voting together as a single class on an as-converted to common stock basis provided that each series of convertible preferred stock would not be converted as a result of such vote without the consent of the holders of a majority of the shares of such series of convertible preferred stock then outstanding. Upon the conversion of the convertible preferred stock to common stock in connection with the Company’s IPO, the carrying value of the convertible preferred stock was reclassified to additional paid-in capital. Preferred Stock Warrants In 2011, the Company issued warrants to purchase 1.2 million shares of the Series Seed preferred stock, with an exercise price of $0.10 per share. The warrants expire upon the earlier of August 2021 or upon certain corporate events, as defined. In 2013, the Company issued warrants to purchase 990,640 shares of the Company’s Series A-3 preferred stock, with an exercise price of $0.18372 per share. The warrants expire upon the earliest of (1) March 2023 (2) three years from the closing of the Company’s initial public offering and (3) upon a change in control, as defined. In February 2016, warrants to purchase 808,135 shares of Series Seed preferred stock were net exercised resulting in the issuance of 788,755 shares of Series Seed preferred stock of which 614,052 shares were then repurchased in connection with the preferred stock repurchase discussed above. In connection with the Company’s IPO during September 2016, the remaining outstanding warrants exercisable for 1,382,505 shares of convertible preferred stock were automatically converted into warrants exercisable for 460,834 shares of Class B common stock and net exercised resulting in the issuance of 448,545 shares of Class B common stock based on the IPO price of $18.00 per share and taking into account the 1-for-3 reverse stock split. See Note 4-Fair Value Measurements for discussion of the convertible preferred stock warrant valuation.

Note 7—Capitalization

In February 2016, the Company increased the authorized shares of common stock from 130,000,000 shares to 142,000,000 shares and the authorized shares of convertible preferred stock from 68,520,540 shares to 80,021,127 shares, of which 11,500,587 shares were designated as Series C preferred stock (“Series C preferred stock”).

In September 2016, and in preparation of the Company’s IPO and the establishment of two classes of common stock, each share of the then outstanding common stock was reclassified to Class B common stock. The Class A and Class B have the same rights and preferences including rights to dividends, except the Class B is entitled to ten votes per share and the Class A is entitled to one vote per share. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. In addition, each share of Class B common stock will convert automatically into one share of Class A common stock upon any transfer, except for certain transfers described in the Company’s restated certificate of incorporation, including, without limitation, certain transfers for tax and estate planning purposes. In addition, upon the earlier of (1) the date on which the outstanding shares of Class B common stock represent less than 10% of the aggregate number of the then outstanding shares of Class A common stock and Class B common stock and (2) the affirmative vote or written consent of the holders of at least 662/3% of the outstanding shares of Class B common stock, all outstanding shares of Class B common stock will convert automatically into Class A common stock, and no additional shares of Class B common stock will be issued. Prior to the reclassification of existing common stock to Class B common stock, the existing common stock was entitled to one vote per share.

Immediately prior to the completion of the IPO on September 26, 2016, the Company amended its certificate of incorporation to amend the number of authorized shares of common stock to 1,095,000,000 shares, par value $0.000001 per share, and 100,000,000 shares of preferred stock, par value, $0.000001 per share. The authorized common stock consists of 1,000,000,000 shares of Class A common stock and 95,000,000 shares of Class B common stock.

No shares of the newly authorized preferred stock are outstanding at September 30, 2016. The Company’s board of directors has the discretion to determine the rights, preferences, privileges and restrictions, including voting rights, dividend rights, conversion rights, redemption privileges and liquidation preferences, of each series of preferred stock.

Initial Public Offering

On September 26, 2016, the Company closed its IPO whereby 4,666,667 shares of Class A common stock were issued and sold by the Company and 700,000 shares of Class A common stock were sold by selling stockholders, pursuant to the underwriters’ exercise of their over-allotment option, at the IPO price of $18.00 per share. The Company received net proceeds from the offering of approximately $78.1 million after deducting underwriting discounts and commissions of $5.9 million, but before deducting offering costs of $4.5 million. The Company did not receive any proceeds from the sales of shares by the selling stockholders. In connection with the Company’s IPO: (i) all shares of the Company’s outstanding Series Seed, A-1, A-2, A-3, B and C convertible preferred stock automatically converted into an aggregate 22,078,637 shares of Class B common stock on a one for one-third basis, including the 700,000 shares sold by selling shareholders which were converted from shares of Class B common stock to shares of Class A common stock prior to sale; and (ii) warrants exercisable for 1,382,505 shares of convertible preferred stock were automatically converted into warrants exercisable for 460,834 shares of Class B common stock and net exercised resulting in the issuance of 448,545 shares of Class B common stock based on the IPO price of $18.00 per share and taking into account the 1-for-3 reverse stock split.

In addition, upon completion of the IPO, costs associated with the IPO of $4.5 million were reclassified from other assets, non-current to additional paid-in capital.

Convertible Preferred Stock

In February 2016, the Company issued 11,500,587 shares of Series C convertible preferred stock for $60.0 million and used $54.0 million of the proceeds to repurchase 3,897,928 and 8,485,350 shares of Series Seed preferred stock (including shares issued upon exercise of warrant described below) and Series A preferred stock (comprising shares of Series A-1, A-2 and A-3), respectively, each at 80% of the Series C offering price per share of $5.22, and 188,786 shares of common stock at a price per share of $12.51. Warrants to purchase 808,135 shares of Seed preferred stock were net exercised, resulting in the issuance of 788,755 shares of Series Seed preferred stock of which 614,052 shares were then repurchased.

The repurchase price of the convertible preferred stock, including legal costs, of $51.8 million exceeded the carrying value of $4.6 million at the date of repurchase. The repurchase price in excess of the then carrying value of the preferred stock of $47.2 million was recorded as a reduction to additional paid-in capital of $1.2 million and a reduction to retained earnings of $46.0 million. For the computation of earnings per share for the nine months ended September 30, 2016, the repurchase price in excess of the then carrying value of the preferred stock of $47.2 million was recorded as an increase to net loss attributable to common stockholders.

Rights and Preferences of Convertible Preferred Stock

Prior to the Company’s IPO, the rights and preferences of convertible preferred stock were as follows:

Voting Rights: Each holder of convertible preferred stock was entitled to the number of votes equal to the number of shares of common stock into which such shares of preferred stock could be converted. The holders of convertible preferred stock and the holders of common stock would vote together as a single class on all matters.

Dividends Rights: The holders of Series C preferred stock had a preferential dividend right whereby they were entitled to receive a dividend prior to any other class of stock. After payment of any dividend to the holders of Series C preferred stock, the holders of Series B preferred stock had a preferential dividend right whereby they were entitled to receive a dividend prior to any other class of stock. After payment of any dividend to the holders of Series C preferred stock and the holders of Series B preferred stock, the other holders of convertible preferred stock on a pari passu basis were entitled to receive dividends declared by the Board of Directors out of any assets of the Company legally available prior to the payment of dividends to the holders of common Stock. The dividend rate was $0.008 for holders of Series Seed preferred, $0.010087 for holders of Series A-1 preferred stock, $0.011758 for Series A-2 preferred stock, $0.014698 for Series A-3 preferred stock, $0.194 for Series B preferred stock and $0.417 for Series C preferred stock, per share per annum, when and if declared. If a common stock dividend was declared, such that the convertible preferred holders’ share, on an as-converted basis, would exceed the amount declared under the specified preferred stock dividend rate, the convertible preferred holders were entitled to receive the greater amount, as if the convertible preferred stock was converted to common stock.

Liquidation Preferences: In the event of any liquidation event, either voluntary or involuntary, the holders of Series B preferred stock and the holders of Series C preferred stock were entitled to receive, prior to the other holders of convertible preferred stock or common stock, on a pro rata and pari passau basis, an amount per share equal to the greater of their respective original issue price, plus any dividends declared but unpaid thereon or an amount as would have been payable had their shares of preferred stock immediately converted to common stock. After payment of the amounts to the Series B preferred stockholders and the Series C preferred stockholders, the other holders of convertible preferred stock were entitled to receive a liquidation preference of the greater of (1) the original issue price, plus any dividend declared but unpaid thereon and (2) such amount per share as would have been payable had all shares of the preferred stock been converted into common stock immediately prior to liquidation, dissolution or winding up. Thereafter, any remaining assets available for distribution were to be distributed among the holders of shares of common stock pro rata based on the number of shares held by each holder.

The liquidation preference provisions of the convertible preferred stock were considered contingent redemption provisions because there were certain elements that were not solely within the control of the Company, such as a change in control of the Company. Accordingly, prior to the conversion to common stock, the Company presented the convertible preferred stock within the mezzanine portion of the accompanying consolidated balance sheets.

Conversion Features: Each share of convertible preferred stock was convertible at any time, at the option of the holder thereof, into such number of fully paid non-assessable shares of common stock as was determined by dividing the original issue price by the conversion price applicable to such share, in effect on the date of the conversion. The original issue price per share was $0.10 for Series Seed preferred stock, $0.126084 for Series A-1 preferred stock, $0.146976 for Series A-2 preferred stock, $0.183720 for Series A-3 preferred stock, $2.431 for Series B preferred stock and $5.217125 for Series C preferred stock. Prior to the IPO, the conversion price per share, as adjusted for the reverse stock split described in Note 2, was $0.30 for Series Seed preferred stock, $0.378252 for Series A-1 preferred stock, $0.440928 for Series A-2 preferred stock, $0.55116 for Series A-3 preferred stock, $7.293 for Series B preferred stock and $15.651375 for Series C preferred stock.

Each share of convertible preferred stock would automatically convert into shares of common stock at its then effective conversion rate immediately upon the earlier of (1) a Qualified IPO, and (2) the date specified by a vote of the holders of at least a majority of all then-outstanding shares of convertible preferred stock, voting together as a single class on an as-converted to common stock basis provided that each series of convertible preferred stock would not be converted as a result of such vote without the consent of the holders of a majority of the shares of such series of convertible preferred stock then outstanding.

Upon the conversion of the convertible preferred stock to common stock in connection with the Company’s IPO, the carrying value of the convertible preferred stock was reclassified to additional paid-in capital.

Preferred Stock Warrants

In 2011, the Company issued warrants to purchase 1.2 million shares of the Series Seed preferred stock, with an exercise price of $0.10 per share. The warrants expire upon the earlier of August 2021 or upon certain corporate events, as defined.

In 2013, the Company issued warrants to purchase 990,640 shares of the Company’s Series A-3 preferred stock, with an exercise price of $0.18372 per share. The warrants expire upon the earliest of (1) March 2023 (2) three years from the closing of the Company’s initial public offering and (3) upon a change in control, as defined.

In February 2016, warrants to purchase 808,135 shares of Series Seed preferred stock were net exercised resulting in the issuance of 788,755 shares of Series Seed preferred stock of which 614,052 shares were then repurchased in connection with the preferred stock repurchase discussed above.

In connection with the Company’s IPO during September 2016, the remaining outstanding warrants exercisable for 1,382,505 shares of convertible preferred stock were automatically converted into warrants exercisable for 460,834 shares of Class B common stock and net exercised resulting in the issuance of 448,545 shares of Class B common stock based on the IPO price of $18.00 per share and taking into account the 1-for-3 reverse stock split. See Note 4-Fair Value Measurements for discussion of the convertible preferred stock warrant valuation.