Snowflake, Okta among stocks making the biggest moves after the bell

$Snowflake(SNOW.US)$
— Snowflake shares plunged 21% after the business software company announced the retirement of its CEO Frank Slootman. The news coincided with better-than-expected quarterly results, but weaker-than-expected product revenue guidance for the first quarter.
$Duolingo(DUOL.US)$
— The language learning platform skyrocketed 22% after surpassing quarterly estimates and posting strong monthly average user and bookings figures. Duolingo also provided strong revenue guidance for the first quarter and full year.
$Okta(OKTA.US)$
— Okta rallied 24% on better-than-expected quarterly results and first-quarter guidance.