United Scientific announced that it had dropped its offer after the close of trading.
"As a result, I dropped my offer entirely."
On Saturday, Corestates dropped its offer.
Tactically, if Northrop drops its offer, some analysts said, it could actually gain an edge and return to shareholders with a successful new offer.
After the screening the crowd at Cannes boos it, and Marx drops his offer immediately.
The company said it had been negotiating for the release of information to Mr. Zinn when he dropped his offer.
Last week, Mr. Trump dropped his own $22-a-share offer for the stock he does not own.
On 14 November 2010, the company announced that it was dropping its offer for Potash Corporation of Saskatchewan.
It could earn 15 percent of the profits on its investment if the group dropped its offer.
Earlier this month, Mr. Robertson dropped his offer to buy the whole company for $6 million.