Klaviyo's Q1 adjusted EPS $0.22 beat consensus $0.20 and revenue $358M topped $348.6M estimate, 28% YoY growth.
Shares plunged 18.3% as CFO Amanda Whalen announced her departure effective Aug 21, 2026, triggering investor concerns.
Full‑year 2026 revenue guidance raised to $1.514‑$1.522 billion (23% YoY), with Q2 outlook $359‑$363 million, midpoint above prior trend.
Adjusted operating margin improved to 16% (up from 12%), net revenue retention hit 110%, and customers >196k with 38% ARR growth.