The Bowraville Tigers junior made his first grade debut in round one of the 2010 season and says he never wanted to consider leaving the club.
“I’m over the moon to get the deal done,” Kelly told sharks.com.au.
“It’s a massive weight off my shoulders and I can now just concentrate on footy and getting my leg right for a speedy return.”
Kelly, the cousin of superstar Greg Inglis, suffered a broken fibula against the Cowboys in round seven that has forced him to watch his side from the sideline in recent weeks.
“I just wanted to sign the deal… the Sharks have been great to me and I’m really enjoying my time here.”
“It’s a great lifestyle, I feel right at home and I’m very excited about where the Sharks are currently at.
“I’ve enjoyed the challenge so far of playing in the halves and helping to lead the team around, we’re only going to improve and get better.
“It’s a great feeling wearing the black, white and blue and I’ll be a Shark for the next three years at least.”