Plumtree said it would evaluate the offer.
Conning said its board would evaluate the offer.
Hartford Life appointed a special committee of directors to evaluate the offer.
U.S. Can, which had $714 million in sales last year, formed a committee to evaluate the offer.
Genentech said the three members of its board who were not Roche or Genentech executives would evaluate the offer.
Mr. Bostock asked Mr. Ballmer for more time to evaluate the offer, citing the complexity of separating Yahoo's search business from the rest of the business.
NRG, with 44 generating stations spread across Southern California, Texas, Pennsylvania, Delaware, New York and Connecticut, had no immediate comment except to say that it was evaluating the offer with its advisers.
David Clohessy, the national director of the Survivors Network of Those Abused by Priests, said it was difficult to evaluate the offer because "the diocese has never come clean with its finances".
In a scathing court document, prosecutors said the defense had refused to give them information needed to evaluate the offer, so it could not be considered genuine.
In Monday's statement, it called United's $3 billion offer "an opportunistic attempt to buy Diebold at a time when shareholders do not have sufficient data to evaluate the offer and as such, the board believes that it would be irresponsible to engage in discussions with UTC at this time".
