Logistics firm LoadDelivered is moving its headquarters within River North as it plans to hire 150 employees.

The company said it signed a nine-year lease for 23,000 square feet at 640 N. LaSalle St., where it will move in March.

LoadDelivered, which uses proprietary software to help clients move refrigerated food and other goods, has been on Crain's Fast Fifty list of fastest-growing Chicago companies each of the past two years.

The company had $86 million in revenue in 2014, up 1,381 percent over five years. Company spokeswoman Casey Stelletello declined to provide LoadDelivered's expected 2015 revenue.

LoadDelivered is moving from 33,000 square feet at nearby 750 N. Orleans St., where it has grown to 100 employees, from 18 when it moved there in 2010. The firm plans to add 150 workers in the new space over the next five years, Stelletello said.

The seven-story, 350,000-square-foot building at 640 N. LaSalle is owned by Chicago-based Mac Management.

Although the new headquarters will have almost one-third less total space, it's more efficient than the current layout, with four offices on three floors in the Orleans building, Stelletello said.

“We are eager to take this next step in our five-year growth plan,” CEO and co-founder Robert Nathan said in a statement. “LoadDelivered has been preparing for this moment for the last seven years. We are eager to continue investing in our infrastructure and take a larger piece of this $725 billion industry.”

LoadDelivered is moving into space that online lender Avant, the city's fastest-growing startup since Groupon, is leaving in January. Avant is moving to 120,000 square feet just across the Chicago River at 222 N. LaSalle St.