Ondas Holdings Inc. (NASDAQ:ONDS) faced selling pressure ahead of Christmas, dropping 12.11% to $7.69 as a board member resigned abruptly. Ron Stern, who joined in January, left immediately, selling all 850,000 shares for $6.7 million. The company plans to invest $11 million in Drone Fight Group, a Ukrainian developer of unmanned aerial systems.

Read more at Yahoo Finance: Ondas (ONDS) Trims 12% as Director Steps Down Immediately