NEW YORK CITY-Equity Office Properties’ former chief, Tim Callahan goes from REIT to REIT as he takes over the helm of locally based Trizec Properties. The appointment, unveiled this morning, is effective immediately, as Callahan replaces Christopher Mackenzie, who, according to a spokesperson, is “simply leaving.” The company also named Casey Wold as COO, a new position.

It’s unclear as yet where Callahan will be stationed, and the former EOP chief is vacationing this week and unavailable for comment. But clearly, he’s the man for the job. He was president and CEO of Equity Office Properties from 1996, leaving in April of this year, and he conducted the REIT through some if its most dramatic growth.

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