Siposs, 19, has enjoyed a breakthrough season with the Saints having played in ten games, netting 129 disposals, 54 marks, 9 goals and 8 behinds.
The talented forward was rewarded for his performance against Essendon in Round 15 with a NAB AFL Rising Star nomination.
This season has seen the emergence of a number of developing players at St Kilda, and Arryn becomes the tenth player to recommit to the Club’s future.
"Arryn’s signing is another positive for the Club,” said Senior Coach Scott Watters.
“This year Arryn has shown a strong commitment to improving his overall game and with continued hard work, he has a great opportunity to develop into a multi-role player and a significant contributor to the team,” concluded Watters.
A lifelong St Kilda supporter, Siposs was recruited by Club from the Dandenong Stingrays with pick #75 in the 2010 AFL National Draft and made his debut in 2011 against Carlton.“
"To play for the club I’ve supported all my life is very special,” Arryn Siposs said.
“I’ve been pleased with my form this season and excited to be continuing my progression with St Kilda.
"There is a great vibe throughout the entire Club and I’m happy to be part its future,” claimed Siposs.
