Loose-head prop Gordon Reid joined on a full-time basis ahead of the 2011/12 season, after representing Ayr in the BT Premiership and also featuring as part of the wider Warriors squad during the previous campaign. The 29-year-old Scotland international has gone on to make 109 appearances for the club.
Back-rower Josh Strauss joined the Warriors in September 2012 from South African Super Rugby side, the Lions. The 30-year-old has made 104 appearances for the club and has also won 10 caps for Scotland during his time in Glasgow.
Mark Bennett, who will join Edinburgh Rugby, made his Glasgow Warriors debut against Leinster in May 2011, before the centre re-joined the Warriors in 2012 after a short spell with French side Clermont Auvergne. The 24-year-old Scotland international has gone on to make 64 appearances and has scored 20 tries for the Guinness PRO12 side.
Speaking to glasgowwarriors.org, head coach Gregor Townsend said: "Although there is a lot of rugby still to be played this season, I'd like to acknowledge and thank Gordy, Josh and Mark's invaluable contributions since they joined the club.
"We look forward to them ending their time at the Warriors with the same commitment and skill they have shown already this season and wish them well in the next stages of their careers."