Threshold Pharmaceuticals, Inc. (NASDAQ:THLD) increased more than 26% in pre-market trading to $4.76 after the pharmaceutical company announced that TH-302 received FDA fast-track designation. The pancreatic cancer drug is being produced in partnership with Merck.

Pall Corporation (NYSE:PLL) rose 20% to $119.17 per share following news that potential buyers are looking to buy the company. The water-filtration producer is valued at over $10 billion and is being courted by Danaher Corp and Thermo Fisher Scientific.

AOL, Inc. (NYSE:AOL) shares are up more than 18% to over $50 per share after Verizon confirmed plans to buy the company for $4.4 billion, valued at $50 per share. The deal will include AOL subsidiaries; Huffington Post and Techcrunch.

magicJack VocalTec Ltd. (NASDAQ:CALL) shares increased over 18% in pre-market trading to $8.30 a share after the company reported first quarter earnings. The cloud communications company beat the EPS estimate of $0.23 by $0.08 and posted revenue of $25.5 million for the quarter.