Summit Partners L.P. sold $88.5M of KVYO stock

Summit Partners L.P., 10% owner of Klaviyo, Inc. (KVYO), sold 5,000,000 shares of KVYO stock worth $88.5M, per an SEC Form 4 filed Aug 13, 2026.

The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.

The trade happened on Aug 11, 2026, 2 days before it was made public.

KVYO has moved +12.8% since the trade date, from $18.36 to $20.71 (Nov 6, 2026 close).