Facebook’s vice-president of partnerships Dan Rose is leaving the company for personal reasons, he announced on his page. Rose has indicated that he would stay on through Mobile World Congress in February.

Rose steered the biggest business deals during his twelve-year tenure at Facebook, including Facebook’s acquisition of Instagram in 2012, as well as the 2007 deal from Microsoft that valued Facebook at $15 billion.

This is the fourth top-executive exit at Facebook this year. Elliot Schrage, the longtime head of Facebook’s public policy and communications group, announced his departure in June. Alex Stamos said earlier in August that he will be leaving the company and has already departed to teach. In March, Stamos wrote to his colleagues at Facebook to exercise restraint while collecting data from users. “We need to intentionally not collect data where possible, and to keep it only as long as we are using it to serve people.” he said. Facebook’s chief legal officer Colin Stretch announced he’ll be gone from the company by the end of 2018.

Rose made no comments about Cambridge Analytica or the other controversies Facebook has been embroiled in this past year.