Moore, a product of the Ulster Rugby Academy, made his first Senior Ulster appearance against Leinster in December 2019, and was rewarded with a Development contract in 2020, closely followed by a Senior contract the following year.
Known for his footwork and decision making, the versatile Ballymoney native can play at both inside and outside centre, and also put in a Player-of-the-Match performance at full-back against Cardiff Rugby at Kingspan Stadium last month.
On this latest signing, Head Coach, Dan McFarland, said:
“It is really encouraging to have Stewart sign-on with Ulster for a further three seasons. He is a versatile player who is set to bring a lot to the province in the years ahead.
“Stewart has a good all-round skill set and is a lovely balanced runner who can cause defences problems.
“I look forward to seeing Stewart develop over the coming years.”
Stewart Moore added:
“I am pleased to be continuing my career at my home club – and I look forward to progressing as a player and person, and there is no better place to do that than here at Ulster.
“It’s very exciting to be part of such a young squad that is constantly competing for championships, and feared whether it’s in the URC or Europe.”