Thompson still had another year left on his existing deal, but inked the extension that will keep the defender at Arden St until at least the end of the 2017 season.
Exciting prospects Ben Cunnington and Aaron Black also signed extensions to remain at the club until the end of 2017, while forward Lindsay Thomas will stay put until at least the end of 2016.
Thompson said the Kangaroos had initially tried to extend his contract by two years, but he wanted an extra season.
“The club approached me and my manager, Anthony McConville, about a month ago with a two-year extension but I’m really keen to be a one-club player and we came to terms on an extra year on top of that,” Thompson told NMFC.com.au.
“With the things going on at North at the moment, I’d be crazy to contemplate playing anywhere else.
“It’s definitely an exciting place to be and the work the club is doing the post-season to ensure we have every opportunity to succeed is pretty clear and impressive.”
Thompson's blistering 2013 season in which he gained All Australian selection also saw him claim his first Syd Barker Medal as the Kangaroos' best and fairest.
He tied with Daniel Wells for the award last Monday night.
“It’s been a big couple of weeks with the All Australian, best and fairest and now this but I’m already looking forward to the pre-season and feel that we’re going to be right in it next year," he said.