After selling 8% of the company's shares, private equity firm FIMI Opportunity Funds still holds a 35% stake.
Bet Shemesh Engines says that its revenue from the agreement with Pratt & Whitney Canada will total $800 million in the next 20 years.
The previous tax hikes two years ago have created a flourishing moonshine industry.
The move follows a spate of bad news affecting the traffic control tech company, and a collapse in its share price.