Experienced striker Jerome played 37 times for the Hatters this season, after joining on a free from MK Dons in the summer, scoring five goals, and was part of the side who just missed out on reaching the play-off final after a 2-1 defeat on aggregate to Huddersfield Town.
Midfielder Berry suffered an injury-hit campaign as he only managed to play 15 times in total, but still managed seven goals to finish as the club’s third top scorer.
Kioso started the season in Town’s first team, before a loan spell at MK Dons in August, but was recalled by Luton and went on to play 19 times for the club.
Meanwhile, Isted made senior debut for the Hatters in the FA Cup fifth round tie against Chelsea following Jed Steer’s ruptured Achilles, producing a starring role in the 3-2 defeat.
He also came on at Cardiff when James Shea suffered a serious knee injury and made his full debut in the 1-1 draw against Blackpool, before Town signed Hull City’s Matt Ingram on an emergency loan deal.