A prospectus supplement in electronic format may be made available on the web sites maintained by one or
more underwriters, or selling group members, if any, participating in the offering. The underwriters may agree to allocate a number of shares to underwriters and selling group members for sale to their online brokerage account holders. Internet
distributions will be allocated by the representatives to underwriters and selling group members that may make Internet distributions on the same basis as other allocations.
We have agreed that we will not (i) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to
sell, grant any option, right or warrant to purchase, lend or otherwise transfer or dispose of, directly or indirectly, or submit to, or file with, the SEC a registration statement under the Securities Act relating to, any shares of our Class A
common stock or securities convertible into or exercisable or exchangeable for any shares of our Class A common stock, or publicly disclose the intention to make any offer, sale, pledge, loan, disposition or filing, or (ii) enter into any
swap or other arrangement that transfers all or a portion of the economic consequences associated with the ownership of any shares of Class A common stock or any such other securities (regardless of whether any of these transactions are to be
settled by the delivery of shares of Class A common stock or such other securities, in cash or otherwise), in each case without the prior written consent of J.P. Morgan Securities LLC, Goldman Sachs & Co. LLC, Evercore Group L.L.C. and
Cantor Fitzgerald & Co. for a period of 60 days after the date of this prospectus supplement, other than the shares of our Class A common stock to be sold in this offering.
The restrictions on our actions, as described above, do not apply to certain transactions, including (i) the issuance of shares of Class A common
stock or securities convertible into or exercisable for shares of our Class A common stock pursuant to the conversion or exchange of convertible or exchangeable securities or the exercise of warrants or options (including net exercise) or the
settlement of restricted stock units (including net settlement), in each case outstanding on the date of the underwriting agreement and described in this prospectus supplement; (ii) grants of stock options, stock awards, restricted stock,
restricted stock units, or other equity awards and the issuance of shares of our Class A common stock or securities convertible into or exercisable or exchangeable for shares of our Class A common stock (whether upon the exercise of stock
options or otherwise) to our employees, officers, directors, advisors, or consultants pursuant to the terms of an equity compensation plan in effect as of the closing of this offering and described in this prospectus supplement; (iii) grants of
inducement awards and the issuance of shares of our Class A common stock or securities convertible into or exercisable or exchangeable for shares of our Class A common stock (whether upon the exercise of inducement awards or otherwise) to
persons not previously one of our employees or directors, or following a bona fide period of non-employment, as an inducement material to such persons entering into employment with us pursuant to the terms of
an inducement plan that we may adopt, as described in this prospectus supplement; (iv) the issuance of up to 10% of the outstanding shares of our Class A common stock, or securities convertible into, exercisable for, or which are otherwise
exchangeable for, our Class A common stock, immediately following the closing of this offering, in acquisitions or other similar strategic transactions, provided that such recipients enter into a lock-up
agreement with the underwriters; (v) our filing of any registration statement on Form S-8 relating to securities granted or to be granted pursuant to any plan in effect on the date of the underwriting
agreement and described in this prospectus supplement, any plan proposed to be adopted and described in this prospectus supplement or any assumed benefit plan pursuant to an acquisition or similar strategic transaction; (vi) the establishment
of a trading plan pursuant to Rule 10b5-1 under the Exchange Act (a 10b5-1 Plan) for the transfer of shares of our Class A common stock, provided that
such plan does not provide for the transfer of shares of our Class A common stock during the lock-up period; or (vii) our filing of any registration statement required by the terms of existing
registration rights agreements described in this prospectus supplement.
Our directors and executive officers, and certain stockholders affiliated with
our directors, referred to herein as lock-up parties, have entered into lock up agreements with the underwriters prior to the commencement of this offering pursuant to which each
lock-up party, with limited exceptions, for a period of 60 days, in the case of our directors and executive officers, or 45 days, in the case of certain stockholders affiliated with our directors, after the
date of this prospectus supplement, referred to herein as the restricted period, may not (and may not cause any of their direct or indirect affiliates to), without the prior written consent of J.P. Morgan Securities LLC, Goldman Sachs & Co.
LLC, Evercore Group L.L.C. and Cantor Fitzgerald & Co., (1) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, lend or
otherwise transfer or dispose of, directly or indirectly, any shares of our Class A or Class B common stock, or common stock, or any securities convertible into or exercisable or exchangeable for
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