Institutional Shareholder Services recommended that activist investor Nelson Peltz be voted onto DuPont's board.
Peltz's hedge fund Trian Fund Management, a major DuPont shareholder, has for months criticized the company's performance. Trian launched a proxy battle in January for four board seats, including one for Peltz. DuPont has said it could accommodate one of Trian's nominees, but not Peltz himself.
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