Agreement Regarding Tax Payment Related to Pharma Services Holding, Inc. Stock Purchase – Quintiles Transnational Corp. and Michael Mortimer

Summary

Quintiles Transnational Corp. agrees to pay Michael Mortimer $79,172.24 to help cover potential tax liability resulting from his purchase of Pharma Services Holding, Inc. common stock and his filing of an 83(b) election. Mortimer is still responsible for any remaining personal tax liability. The agreement recommends that Mortimer consult his personal tax advisor regarding this payment.

EX-10.28 8 g93307exv10w28.txt EX-10.28 Exhibit 10.28 (QUINTILES TRANSNATIONAL CORP. LOGO) Quintiles Transnational Corp. Post Office Box 13979 Research Triangle Park, NC ###-###-#### ###-###-#### / Fax ###-###-#### http://www.quintiles.com February 22, 2005 Michael Mortimer 1604 Kirkby Lane Raleigh, NC 27614 Re: Purchase of Pharma Shares Dear Mike, On February 4, 2005 you were offered the opportunity to purchase shares of common stock of Pharma Services Holding, Inc. for $0.2438 per share. On February 9, you accepted the offer, purchased the shares and filed an 83(b) election. In connection with the potential tax liability to you resulting from your election, Quintiles will pay to you the amount of $79,172.24. You remain responsible for any personal tax liability whether or not this additional payment to you fully addresses your tax liability. We recommend that you seek advice from your personal tax advisor regarding the payment. If you have any questions, please contact me at ###-###-####. Sincerely, /s/Nicky Rousseau Nicky Rousseau V.P., Global Compensation and Benefits