The fly-half has made 81 appearances to date in Glasgow colours across two spells with the club, having made his debut for the club back in 2017.
He made 53 appearances in his first stint at the club before departing in 2021, returning in the summer of 2024 to rejoin the Warriors ahead of the 2024/25 campaign.
The Scotland international is one of only six players to amass over 500 points as a Glasgow Warrior, reaching the feat in victory over the Vodacom Bulls earlier this season.
Hastings remains fully committed to Glasgow Warriors for the remainder of the 2025/26 season, and the club wishes him the best in his future endeavours.