Online food ordering company Just Eat Takeaway.com NV is considering selling its U.S. unit Grubhub after reporting a decline in orders following a boom in sales during Covid-19 lockdowns.

The company said it was exploring the introduction of a strategic partner or the partial or full sale of the U.S.-based food delivery service. Just Eat completed its acquisition of Grubhub last year, a deal valued at $7.3 billion.

In a statement Wednesday, the company said there is no certainty that any strategic actions will be agreed upon or what the timing of such agreements would be.

Just Eat shares were up 8% in Amsterdam trade Wednesday. 

Just Eat saw a 5% decline in orders in North America, currently its largest market, and a 1% decline in orders across the globe in the first quarter of 2022, according to a trading update. 

The company said it had about 90 million orders in North America and 264 million orders overall in this year’s first quarter. Grubhub is Just Eat’s only subsidiary based in the U.S., according to its website. 

Just Eat didn’t respond to requests for comment. 

Just Eat Takeaway was created in 2020 through the $11.1 billion merger of the U.K.’s Just Eat and Netherlands-based Takeaway.com. It brought together one of the biggest food-delivery companies in the U.K. with Takeaway.com, which had a big presence in continental Europe.

Write to Omar Abdel-Baqui at omar.abdel-baqui@wsj.com