How long is K-3/K-4 status good for?
A K-3 status is good for two years after entry into the United States. Your status will end sooner if your marriage ends, or if K-3 holder obtains a status of Lawful Permanent Resident (LPR). A K-4 status is also valid for two years, unless a child turns 21, gets married, or when his/her K-3 parent becomes a Lawful Permanent Resident (LPR).