Jeffrey Lorenzen was named president of Investment Management Group, a...

Jeffrey Lorenzen was named president of Investment Management Group, a unit of AMCORE Investment Group. He replaces James Mackay, who resigned in the fall to "pursue other interests," said spokeswoman Katherine Taylor. Mr. Lorenzen was CIO and will retain that role. He started with the firm in 1992 as a fixed-income manager. Investors Management Group has $4.4 billion in institutional assets under management.

Mark E. Rose was named CEO of Grubb & Ellis. He was COO and CFO of the Americas at Jones Lang LaSalle, which has not yet named a replacement, said Gayle Kantro, spokeswoman.

Michael D. Benson, vice chairman of AMVESCAP, will resign from the company and its board of directors effective March 31 to pursue "non-executive activities," according to a news release the company issued today. Robert Graham also holds the title of vice chairman, and the company will not look to replace Mr. Benson, said a company official, who declined to be named. John D. Rogers, executive vice president of AMVESCAP and CEO of its INVESCO division, will replace Mr. Benson on the company's board of directors.

Chris Levell will join New England Pension Consultants as a senior consultant, effective March 16, said Michael P. Manning, president. Mr. Levell will oversee asset-liability consulting. He was senior consultant at Mercer Investment Consulting, where he helped develop that firm's asset-liability capability, according to NEPC. Mercer spokeswoman Stephanie Poe said Mercer has begun to interview candidates to replace Mr. Levell.