Benzinga's Top Pre-Market Gainers

KSW KSW soared 20.83% to $4.93 in the pre-market trading. KSW agreed to be acquired by Related Companies for $5.00 per share in cash. Peregrine Pharmaceuticals PPHM surged 9.78% to $4.94 in the pre-market session. Peregrine Pharmaceuticals is expected to report its Q1 results today. Regions Financial RF added 2.17% to $7.53 in the pre-market session. Regions Financial's trailing-twelve-month operating margin is 24.59%. Tesoro TSO moved up 2.14% to $41.00 in the pre-market session. Tesoro's PEG ratio is 0.89.