Benzinga's Top Pre-Market Losers

Navidea Biopharmaceuticals NAVB dipped 33.33% to $2.34 in the pre-market session. Navidea Biopharmaceuticals received a Complete Response Letter from the Food and Drug Administration regarding its New Drug Application for Lymphoseek®. United Natural Foods UNFI moved down 6.17% to $56.70 in the pre-market session. United Natural Foods reported a 46% rise in its fourth-quarter profit. Palo Alto Networks PANW dipped 5.92% to $67.50 in the pre-market session. Palo Alto Networks posted a narrower fiscal fourth-quarter loss. Sequenom SQNM shares fell 5.37% to $3.70 in the pre-market trading. Sequenom intends to offer $100.0 million aggregate principal amount of Convertible Senior Notes due 2017 in a private offering.