Section 6.4           Acquisition Proposals. <omitted> (d)        Except as expressly permitted by this Section 6.4, neither the Company Board or any committee thereof shall effect a Company Adverse Recommendation Change, enter into a Company Acquisition Agreement or terminate this Agreement pursuant to Section 8.3(a). Notwithstanding the foregoing, at any time prior to the receipt of the Company Stockholder Approval, the Company Board (or any committee thereof) may effect a Company Adverse Recommendation Change or terminate this Agreement pursuant to Section 8.3(a) and enter into a Company Acquisition Agreement, if: (i) the Company notifies Parent, in writing, at least four Business Days (the “Superior Proposal Notice Period”) before making a Company Adverse Recommendation Change or terminating the Agreement pursuant to Section 8.3(a) and entering into a Company Acquisition Agreement, of its intention to take such action with respect to a Superior Proposal (which notice shall not, by itself, constitute a Company Adverse Recommendation Change), which notice shall state expressly that the Company has received an Alternative Proposal that the Company Board (or a committee thereof) has determined in good faith, after consulting with outside legal counsel and its financial advisor, constitutes a Superior Proposal and that the Company Board (or a committee thereof) intends to effect a Company Adverse Recommendation Change; (ii) the Company attaches to such notice the most current version of the proposed agreement reflecting the Superior Proposal and any material documents related thereto, and summarizes in reasonable detail any material terms and conditions of such Superior Proposal that are not reflected in the proposed agreement with respect to such Superior Proposal and the identity of the third party making such Superior Proposal; (iii) during the Superior Proposal Notice Period, the Company negotiates with Parent in good faith, and causes its Representatives to negotiate with Parent in good faith, to make such adjustments in the terms and conditions of this Agreement so that such Alternative Proposal ceases to constitute a Superior Proposal, if Parent, in its discretion, proposes in good faith to make such adjustments (it being agreed that in the event that, after commencement of the Superior Proposal Notice Period, there is any material revision to the terms of a Superior Proposal, including any revision in price, the Superior Proposal Notice Period shall be extended, if applicable, to ensure that at least three Business Days remain in the Superior Proposal Notice Period subsequent to the time the Company notifies Parent of any such material revision); and (iv) the Company Board (or a committee thereof) determines in good faith, after consulting with outside legal counsel and its financial advisor, that such Alternative Proposal continues to constitute a Superior Proposal after taking into account any adjustments made by Parent during the Superior Proposal Notice Period to the terms and conditions of this Agreement. (Page 52)

Question: Additional matching rights period for modifications (COR)-Answer
Subquestion: <NONE>
Answer: 3 business days