Hastings heads to Glasgow
The flyhalf will arrive at Scotstoun until at least May 2019, subject to medical.
Hastings has made 12 appearances for the Bath first team, since joining their junior set-up in 2014 and then earning promotion to their Senior Academy in 2015.
He is a product of George Watson’s College and Millfield School in Somerset and has represented Scotland at all age-grade levels.
The 20-year-old has played for Scotland Under-20 seven times and is the third Hastings to represent Scotland, following in the footsteps of his father Gavin and uncle Scott.
Edinburgh-born Hastings is the latest player to join the Warriors ahead of the 2017/18 season, with centre Huw Jones and loosehead prop Oli Kebble joining from the Stormers and flank Callum Gibbins set to arrive from the Hurricanes.
Speaking to glasgowwarriors.org, Adam Hastings said: "From a young age I wanted to play for Scotland and I believe playing in Scotland is the right decision for me at this stage of my career.
"As a young 10 it’s important to get game-time and hopefully I’ll get that opportunity in Glasgow.
"I’m excited about working under Dave Rennie as I’ve heard he is a world class coach.
"There are some quality players in Glasgow and I can’t wait to get up there and start working with them.
"I like to run the ball, I’m quite an instinctive player and I like to have a crack. I like the way Finn (Russell) plays and I can’t wait to get up there and learn from him.
"Glasgow are flying at the moment, they’ve got a good thing going and seem to be a really tight-knit team.
"Qualifying for the quarterfinals in Europe was a big statement of where the club is going and I’m excited to be joining them next season,"
Glasgow Warriors head coach Gregor Townsend added: “Adam trained with us a couple of years ago and he has really developed during his time at Bath, working with the likes of George Ford and Rhys Priestland.
"It’s great that he has decided to move back to Scotland and I’m sure he’ll fit in very well at Scotstoun next season,"