michael lawMichael Law, who joined Burson-Marsteller last year as US president, is taking the US CEO reins from Dave DenHerder on Sept. 1.

DenHerder, who assumed the CEO slot on Jan. 2 2012 and earlier helmed its Direct Impact grassroots arm, will continue as senior counselor for both BM clients.

Law, 51, worked for more than 20 years at B-M sister firm Ogilvy in the US and Asia-Pacific (Singapore and Hong Kong) region.

He left as nine-year chief of Ogilvy's west coast operation. At Ogilvy, he repped Ford Motor, American Chemistry Council, and Molson Coors Brewing Company.

The Justice Dept. employed Law before Ogilvy.

Before joining DI as COO in 2005, DenHerder was regional political director for the Bush/Cheney 2004 campaign, organizing and managing activities in seven states.

Earlier, he served in the White House as liaison and special assistant to Secretary of Labor Elaine Chao.

Mark Penn, then CEO of B-M, once said of DenHerder  “no one has exemplified the entrepreneurial spirit of Burson-Marsteller" more than he did.