The company will occupy part of the second floor of the 135,000 sf building. The monthly rent pencils out to be about $3.20 sf. LookSmart signed a 10-year lease on the building in 1999. LookSmart retained about 105,000 sf and leased another 12,000 sf to CG Time a few months ago.

Rapt, Inc. will move into the space in early July provided tenant improvements are complete. The sublease represents an expansion for the company, which has headquarters at nearby 640 Howard St. The building landlord, Rosenberg SOMA Investments III LLC was not involved in the transaction. Marty Melbardis and Michael McCarthy of Colliers International completed the sublease between LookSmart and Rapt.