The restrictions described in the immediately preceding paragraph do not apply to us in certain
circumstances, including:
(1) the issuance by us of shares of common stock to be sold in this offering;
(2) the issuance by us of shares of common stock upon the exercise of an option pursuant to stock plans or a warrant or the conversion of a security, in
each case outstanding on the date of the underwriting agreement and described in this prospectus supplement;
(3) the grant or issuance by us, or
exercise or settlement (in cash, shares of common stock or otherwise) of options, restricted stock awards, restricted stock units or any other type of equity award to our employees, officers, directors, advisors, or consultants pursuant to the terms
of an employee benefit plan described in this prospectus supplement;
(4) our filing of a registration statement with the SEC on Form S-8 with respect to employee benefit plans issued under stock plans described in this prospectus supplement; and
(5) the sale or issuance of or entry into an agreement to sell or issue shares of common stock or securities convertible into or exercisable for common
stock by us in connection with any (a) merger, (b) acquisition of securities, businesses, property or other assets, (c) joint ventures, (d) strategic alliances, (e) equipment leasing arrangements or (f) any term loan or
revolving credit facility, provided that the aggregate number of shares of common stock or securities convertible into or exercisable for common stock that we may issue pursuant to this clause (5) shall not exceed 5% of the outstanding shares
of our common stock immediately following the closing of this offering, provided that such recipients enter into a lock-up agreement with the underwriters.
Our directors, officers and certain of our securityholders have agreed that, subject to certain exceptions, without the prior written consent of the
representative, on behalf of the underwriters, they will not, during the period ending 60 days (or 45 days, in the case of Bain,Pfizer and Novalis LifeSciences Investments I, L.P.) after the date of this prospectus (the restricted
period), (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 common stock beneficially owned (as such term is used in Rule 13d-3 of the Exchange Act), any options or warrants to purchase any shares of our common stock or any other
securities convertible into or exercisable or exchangeable for shares of common stock, (2) enter into any swap or other arrangement (including, without limitation, any short sale or the purchase or sale of, or entry into, any put or call
option, or combination thereof, forward, swap or any other derivative transaction or instrument, however described or defined) which is designed to or which reasonably could be expected to lead to or result in a sale, loan, pledge or other
disposition (whether by the stockholder or someone other than the stockholder) or transfer to another, in whole or in part, of any of the economic consequences of ownership of any shares of common stock or derivative instrument, whether any such
transaction (or instrument provided for thereunder) is to be settled by delivery of common stock or such other securities, in cash or otherwise; or (3) otherwise publicly announce any intention to engage in or cause any action or activity
described in the clauses above.
The restrictions described in the immediately preceding paragraph do not apply to our directors and officers and
such securityholders, subject to certain conditions, with respect to:
(1) transactions relating to the securities acquired in this offering or in
open market transactions after the completion of this offering;
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