After shifting operations to help restaurants take carryout orders during a pandemic that made indoor dining risky, Chicago-based Tock has been acquired by Squarespace for $400 million in cash and stock, according to a news release. Tock, co-founded in 2014 by Alinea Group’s Nick Kokonas, became the go-to reservation portal for Michelin-starred restaurants such as French Laundry in Yountville, California, and Eleven Madison Park in New York.