Chris Crooks, Matt Quinlan, and Joseph Doyle of Cresa Boston represented Qstream, a high-growth mobile sales enablement and analytics company, in a 6,309 s/f office expansion sublease at 200 Wheeler Rd. Previously located at 60 Mall Rd., Qstream is relocating its corporate headquarters and will occupy a portion of the first floor of the 6-floor, 250,000 s/f standalone, class A building. The sublandlord, IBM, was represented by Brendan Callahan and Tyler Spring of JLL. The landlord is Gutierrez Company. According to Quinlan, Qstream is a growing company that wanted to upgrade and expand its office space at more favorable terms. The new space has a cafeteria and is close to local shops and amenities.