Companies

Onside founder John Trainor described as ‘definition of a gentleman’ after death on Monday

The company said it would close its offices for the remainder of the week as a mark of respect to its late chief executive

John Trainor, the late Onside chief executive, was lauded by one of his peers as ‘one of the sharpest minds’ they had worked with. Picture: Fergal Philips

Tributes from the world of business have been paid to John Trainor, the late chief executive of sports and entertainment advisory firm Onside, who died on Monday at the age of 52.

In a social media post, Onside said it was with “massive, heartbreaking sadness” that it shared the news that its founder and chief executive had died.

“After battling illness with characteristic resilience and strength over a considerable period of time – and turning ...