Quarterly report pursuant to Section 13 or 15(d)

Stock Warrants

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Stock Warrants
6 Months Ended
Jun. 30, 2016
Warrants And Rights Note Disclosure [Abstract]  
Stock Warrants

11.

Stock Warrants

At June 30, 2016, there are 11.7 million warrants outstanding to purchase Navidea's common stock.  The warrants are exercisable at prices ranging from $0.01 to $3.04 per share with a weighted average exercise price of $0.38 per share.  The warrants have remaining outstanding terms ranging from 1 to 19 years.

In addition, at June 30, 2016, there are 300 warrants outstanding to purchase MT Common Stock.  The warrants are exercisable at $2,000 per share.