Today, the Illinois Science & Technology Coalition (ISTC), a not-for-profit organization focused on growing the state’s innovation economy, is announcing the fourth class of corporate participants in its Corporate-Startup Challenge, an award-winning matchmaking program that connects global corporations with startups and emerging technology firms across the state. This group includes Illinois-based Fortune 500 companies Allstate Corporation (participating in the program for a second time), Caterpillar Inc. and Grainger.