The Company (or the Subsidiary or Affiliate employing the Holder) shall, in accordance with the provisions of Section 14 of the Plan, withhold from any payment in settlement of vested Units under this Agreement an amount equal to the amount of any required domestic or foreign tax withholding obligation, including any social security obligation. The Company (or the Subsidiary or Affiliate employing the Holder) may withhold Shares equal in value to the amount of such tax withholding obligation, or may permit the Holder to arrange for the satisfaction of such tax withholding obligation by payment of the estimated tax obligation to the Company (or the Subsidiary or Affiliate employing the Holder).