He was appointed as chief executive of the offshore owner in October 2010 and will retire with effect from 31 May.
Yeo, 47, has a personal interest of 13,102,401 shares in Swissco which amounts to almost SGD 6m ($4.5m) based on the company’s price today.
His spouse also holds 85,000 shares in the Singapore-listed company.
Swissco said Tan Fuh Gih will assume the role of chief executive while being an executive director at the same time.
