definiens: means that allregulatory approvals required to consummate the transactions contemplated by the Call Option Closing shall have beenobtained and shall remain in full force and effect through the Call Option Closing and all statutory waiting periodsapplicable to the Call Option Closing shall have expired or been terminated . Except for any Non - Required Remedy(defined below ), each of [COMPANY] and Bluebird shall use its commercially reasonable good faith efforts to obtain allrequisite consents of any court or government authority regarding the exercise of the Call Option, including, if requiredby federal or state antitrust authorities, promptly taking all steps to secure government antitrust clearance, includingcooperating in good faith with any government investigation including the prompt production of documents andinformation demanded by a second request for documents and of witnesses if requested, to the same extent and in thesame manner ( including with respect to the payment by [COMPANY] of all fees required to be paid to any governmentauthority in connection with any HSR Filing ) as provided in Section 5.9 of this Agreement with respect to any proposedDevelopment & Commercialization Agreement, mutatis mutandis . In the event that the Parties make an HSR Filing underthis Section 1.4, then the Call Option shall terminate ( i ) at the election of either Party, immediately upon notice to theother Party, in the event that the United States of America Federal Trade Commission or the United States of AmericaDepartment of Justice obtains a preliminary injunction under the HSR Act against the Parties to enjoin the CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT WERE OMITTED AND REPLACED WITH . ACOMPLETE VERSION OF THIS EXHIBIT HAS BEEN FILED SEPARATELY WITH THE SECRETARY OF THESECURITIES AND EXCHANGE COMMISSION PURSUANT TO AN APPLICATION REQUESTING CONFIDENTIALTREATMENT PURSUANT TO RULE 406 PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED