The International Symphony Orchestra canceled its 68th season due to financial struggles, including low ticket sales and rising costs.

The International Symphony Orchestra, based in Sarnia and Port Huron, has canceled its 68th season due to financial challenges, including ticket sales below 15% for its opener and rising production costs. The group closed its downtown Sarnia offices and the ISO Bar, relocating programs to the Imperial Theatre for fundraising concerts. Leadership, including former board president Mark Lumley, says rebuilding requires stronger leadership, better fundraising, increased grants, volunteer support, and community outreach. Ticket holders may request refunds or donate by November 30. The orchestra has not responded to interview requests since mid-September.