Quintiles’ (NYSE: Q) going public earlier this year has proving to be lucrative for another top executive.

Michael Mortimer, executive vice president and chief administration officer, at Quintiles has sold shares worth more than $8 million, according to a filing with the SEC. He’s the second senior executive officer to do so in the past week.

President and Chief Operating Officer John Ratliff cashed out some of his shares before he leaves the company at the end of the year.

Ratliff net just over $9 million from selling 212,140 shares at $42.55 in transactions that occurred on Nov. 18, according to securities filings.

Quintiles disclosed earlier this month that Ratliff tendered his resignation on Oct. 30 from his executive posts and board membership. His resignation from the board was effective immediately but he will stay on in his executive role until Dec. 31.

Mortimer sold 200,000 shares on Nov. 18 at an average price of $42.55, the SEC filing noted.

He retains 25,000 shares.

Quintiles, the world’s largest life science services firm, is based in Durham.