Few weeks after the exit of Instagram founders, Facebook is losing amazingly, one more originator of one of its billion-dollar acquisitions.

Brendan Iribe, fellow benefactor of Oculus, a virtual reality headset creator obtained by Facebook in 2014 for $3 billion, reported Monday he is leaving the organization.

Iribe had previously stepped down as Oculus CEO in 2016 to focus on leading its PC VR group.

“So much has happened since the day we founded Oculus in July 2012. I never could have imaged how much we would accomplish and how far we would come. Now now, after six incredible years, I am moving on,” Iribe wrote in a Facebook post.

Iribe’s departure marks the end of an era of sorts. All the founders of Facebook’s three biggest acquisitions to date — Instagram, WhatsApp and Oculus — have parted ways with the social networking firm.

Kevin Systrom and Mike Krieger, the cofounders of Instagram, resigned from the company last month amid reports of tensions with Facebook CEO Mark Zuckerberg over the direction of the photo app.

Jan Koum, the co-founder and CEO of WhatsApp, left earlier this year after reportedly clashing with Facebook over its approach to personal data and encryption.

The departures highlight a shift in Facebook’s relationship with founders. Facebook was once viewed as a safe haven where founders could largely operate independently.