Madsen tells GlobeSt.com he and fellow C&W brokers Ramona Harrington and Gary Griff are representing both the owner of the property and the buyer, which Madsen won't as yet reveal but describes as "an investor from outside the area, new to the Portland marketplace." The current owners are nearly as much a mystery. Madsen would only confirm information GlobeSt.com already had, which is that the owners are an offshore family operating under the name Antares ADP Inc.

The family has been hoping to sell the building for several months now. Negotiations fell through with a different buyer earlier this year. This time around, Madsen tells GlobeSt.com: "We are very optimistic that we will conclude negotiations and transact with this buyer."

A 27,000-sf lease by Oregon Health Sciences University earlier this year brought the 19-year-old building back to 100% occupancy. OHSU added to its approximately 20,000 sf by taking all available space in the building, including about 3,000 sf adjacent OHSU's existing space on the second floor of the building's east wing, and all 24,000 sf on the ground floor of the east wing vacated by Bank of America.