PRA Health Sciences Inc. said that certain of its stockholders, including an affiliate of, or a fund sponsored by, Kohlberg Kravis Roberts & Co., intend to offer 10 million common shares of the company in an underwritten secondary offering.

The selling stockholders will receive all the proceeds from this offering. No shares are being sold by the company.

The offering is expected to close Aug. 14, subject to customary closing conditions.

Morgan Stanley and Wells Fargo Securities will act as the underwriters for the offering.