Two of the Warriors' most promising youngsters have been locked in for the future, while an experienced member of their backline has also agreed to new terms.
Ata Hingano and Charnze Nicoll-Klokstad were both confirmed on new contracts on Tuesday, while Blake Ayshford has also signed until the end of the 2019 season.
However that positive news was offset by the loss of prop Toaf Sipley, who choose to chase first grade opportunities at Manly after being completely overlooked at Mt Smart this year.
"We were keen for Toaf to stay and made a good offer but it hasn't been enough to keep him here," said Warriors recruitment manager Tony Iro.
"While it's disappointing to lose players who come through our system, we wish Toaf all the best."
After playing for the club's NYC and Intrust Super Premiership sides, Sipley graduated to make two NRL appearances last year.
Standoff Hingano (20) will remain with the Warriors until the end of the 2020 NRL season after signing a three-year contract.
After making his NRL debut late last season, he featured in the club's first three games this year and scored his first career try when he made his sixth first-grade appearance off the bench in Saturday's victory over the Titans.
Utility Nicoll Klokstad (21), the club's 2016 Intrust Super Premiership player of the year, has been re-signed on a two-year contract.
He was called up for his NRL debut against the Sydney Roosters on April 30 and appeared in each of the next three games against Penrith, St George Illawarra and Brisbane, scoring doubles against the Panthers and the Dragons.
The 157-game veteran Ayshford (29) has extended his stay until the end of the 2019 season after appearing in 33 games for the Warriors so far.
Halfback Lino (23), who captains the ISP side, has also been secured for two seasons. He was used in three NRL games at the end of the 2016 season and continues to provide back-up to the NRL squad's halves as an integral performer for the ISP team.
"These are all key signings for us as we continue to work towards settling our squad for next year," said Iro.
Wing Lewis Soosemea (19) and second rower Joe Vuna (18), both signed on two-year deals, have been frontline performers for the Junior Warriors after making their debuts in the grade as 17-year-olds.
Mangere East Hawks junior Soosemea has made 45 NYC appearances since 2015 scoring 25 tries including nine in 13 games this season.
He also made his ISP debut last year and represented the Warriors at this year's NRL Nines as well as playing in the club's NRL trial against Melbourne on the Sunshine Coast.
Vuna has played 36 NYC games, appearing 22 times last year and in all 14 games so far this season. He was also in the NRL Nines squad in February.