Seller Benefit Plans. As of the Closing Date, in no event shall any Continuing Employee be entitled to accrue any benefits under any Seller Benefit Plan with respect to services rendered or compensation paid on or after the Closing Date. From and after the Closing Date, Seller and its Affiliates shall retain sponsorship of all the Seller Benefit Plans and shall retain and hold Buyer harmless and indemnify Buyer with respect to all commitments, Liabilities and obligations thereunder, whether arising before, on or after the Closing, and neither Buyer nor any of its Affiliates shall have any responsibility for any such Seller Benefit Plans or commitments, Liabilities or obligations. Effective as of the Closing Date, Seller shall cause the account balances of the Continuing Employees in each Seller Benefit Plan that is a 401(k) plan and the benefits of the Continuing Employees in each Seller Benefit Plan that is a defined benefit pension plan or a nonqualified retirement plan to be fully vested.

5.1Seller Benefit Plans. Effective as of the Closing Date, the Continuing Employees shall cease to accrue further benefits and shall cease to be active participants under any Seller Benefit Plans except as provided by the terms of such plans or applicable Law. As of the Closing Date, all Continuing Employees shall become vested on a prorated basis under the terms of any Restricted Stock Unit Award Agreement issued to such Continuing Employee under the terms of the ​ System Long-Term Incentive Plan as if such employees termination of employment with the Acquired Company had involved a Severance Date (as defined in such agreement).