Catherine “Trina” Sjoberg Catherine “Trina” Sjoberg has joined Winthrop & Weinstine’s Real Estate Development & Transactions practice. Sjoberg is a board certified real property law specialist with more than 20 years of experience representing real estate clients in a wide variety of matters. “We are thrilled to welcome Trina to the Winthrop & Weinstine team,” said Tami Diehm, firm president. “Her deep experience in representing clients in real estate transactions and her collaborative and team-oriented outlook will be a benefit to the firm’s bench. We are excited about the opportunity to provide even stronger support for our firm clients in their business needs.”