LONDON/ ZUG, Switzerland, May 16- Glencore Xstrata has appointed Tony Hayward as its interim chairman, a source with knowledge of the matter said, propelling the once "vilified" former BP chief executive into the limelight after an unexpected boardroom coup.
HOLLISTON, Mass.-- Medical instruments maker Harvard Bioscience Inc. said Wednesday that CEO Chane Graziano has stepped down and is retiring. President David Green will take over as interim CEO as the board starts a search for a new CEO. Harvard Bioscience shares fell 5 cents to $5.25 in morning trading.
JERSEY CITY, N.J.-- Optimer Pharmaceuticals said Monday that it has named Eric Sirota as its chief operating officer. He has also previously worked as president of commercial services of inVentiv Health Inc., a provider of clinical, commercial and consulting services to the health care industry.