CAMBRIDGE, MA-Bluefin Robotics Corp. leases 27,000 sf at 19 Blackstone Sq. The company, which develops autonomous underwater vehicles, is relocating from 301 Massachusetts Ave., where it was leasing 11,000 sf.

DALLAS-Barry Gruebbel is wearing the COO and EVP hats at Regis Property Management while Al Palamara has gotten the first COO nameplate from Holt. With their offices already set up, they are free to focus on overseeing day-to-day operations.

HOUSTON-Transwestern hires Chrissy J. Wilson as a senior vice president and William Deane as managing director of retail for the Southwest region. At Yancey-Hausman, a new tenant rep comes on board.

HOUSTON-Hines is named one of four winners by the EPA for its annual Energy Star awards--and the only real estate firm in the lot. Since 1999, Hines has put strategies in place in 46 million sf of office properties to repeatedly earn the high-profile label.