Here is a list of verbs that start with BAN.
ban, bandaged, banded, banding, bang
banged, banging, bangs, banish, banished
banishes, banishing, banked, banking, bankrupt
banks, banned, bans, bantered, bantering
Hope you enjoy this page of verbs that start with ban and the rest of this verb list site as well.
Did I miss any verbs? Visitors can make this a more useful online resource by listing more verbs in the comments.