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A Lawrence buyer snapped up an Andover office building put on the market by Alexandria Real Estate Equities after just over two years of ownership.

The 138 River Road property includes a 65,000-square-foot office building completed in 1984. Alexandria paid $14.3 million to acquire the property in 2022 as part of a larger portfolio of properties in the metro north area, before selling it Jan. 31 to the local buyer for $3.9 million.

The entity is registered to Kenneth Black, founder of Lawrence-based Energy North Group, a fuel distributor.

Alexandria will continue to dispose of non-core assets in 2024 as it scales back its aggressive lab and biomanufacturing development pipeline amid the downturn in life science industry expansion, executives said last week.

Alexandria sold off $1.3 billion worth of properties in 2023, primarily in Greater Boston, and has another $124 million in pending dispositions.

The life science developer’s local portfolio had a 7 percent vacancy rate at the end of the fourth quarter.