Gainers

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Check out these big penny stock gainers and losers

Losers

• Image Sensing Systems, Inc. (NASDAQ:ISNS) fell 5.5% to $6.16 in pre-market trading. Image Sensing Systems shares jumped 42% on Friday after the company announced it initiated a quarterly dividend of $0.12 per share, authorized a 220,000 share buyback and announced the implementation of a holding company reorganization.
• Salem Media Group, Inc. (NASDAQ:SALM) shares fell 5.5% to $1.90 in pre-market trading after dropping over 4% on Friday.
• Torchlight Energy Resources, Inc. (NASDAQ:TRCH) fell 5% to $2.01 in pre-market trading after dropping around 9% on Friday.
• Sanofi (NASDAQ:SNY) fell 4.5% to $50.02 in pre-market trading.
• Plus Therapeutics, Inc. (NASDAQ:PSTV) fell 4.4% to $2.18 in pre-market trading. Plus Therapeutics, last month, reported a Q1 loss of $0.33 per share.