NORTH READING, MASS. — Tritower Financial Group has completed the disposition of a technology headquarters facility located at 300 Riverpark Drive in North Reading. A partnership between Lincoln Property Co., Ibdar Bank and Ritz Banc Group purchased the facility for $45.1 million. Amazon utilizes the 228,921-square-foot facility as its robotics headquarters; it is the only facility in the world that designs, assembles and tests all proprietary fulfillment robotics used by all Amazon distribution facilities. Dave Pergola and Brian Doherty of CBRE/New England represented the seller and procured the buyer in the transaction.