Jamayne Isaako has scored 1043 points across the Dolphins' first 97 matches, appearing in every game in the club's history.
The Kiwi winger led the NRL scoring standings in three of his four seasons with the Dolphins.
Isaako said remaining with the club was crucial to reviving a career he had considered abandoning.
He also revealed that leaving the Dolphins was never his preferred option after helping establish the club from its beginnings.
"It's hard not to be reminded of when you're watching footy games, someone's taking the goal kick and your name pops up on the TV," Isaako laughed.
"But it's something I'm certainly proud of."