Supra
Supra is a private network focused on connecting, supporting, and growing high-caliber Product leaders. When you become a member of Supra, you join a group of 8 exceptional peers engaged in similar jobs at other innovative companies. You’ll meet with this group — your Supra Forum - once a month. Your forum will allow you to share and discuss professional issues with a safe haven of trusted peers; you can think of them as your personal sounding board.
How to join
This community is open to join. Head to their site to become a member.
Features
Related communities

Product Management
123,000 membersThis is a group for Product Management professionals that will allow the members to network and identify contacts for opportunities related to their responsibilites such as aquisitions etc.
Product School
100,000 membersExplore our industry leading Slack channel, and discover for yourself how it became the most expansive community of Product Management across the world

Creative Product Managers
78,000 membersIf you are a Product Manager, that's your place! This group offers a dedicated place for sharing your experience and successful products.