Vistage
Confidential CEO peer advisory groups with chair‑led monthly meetings + executive coaching and expert speakers.

Best fit: CEOs and key executives
Price/dues: Typically ~US$12k+/year; local rates vary
Region/country: Global (35–40 countries)
Type: CEO Forum / Executive Peer Advisory
Size: ≈45,000 members
Year founded: 1957
Notes: Common public ranges show ~$720–$1,500/month depending on group type & market.