shares of wisa technologies inc were down 163 at 929 in midday trading after the companys board approved a 1for100 reverse stock split the beaverton orebased modules manufacturer said thursday afternoon that the reverse split would go into effect after the market closed that day nasdaq informed wisa in june when its shares were trading under a dollar that it had fallen out of compliance with the requirement for shares to have a minimum 1 bid price and that wisa had until dec 20 to rectify the situation last month after closing a 76 million public offering weeks earlier wisa said it had been given another 180 days to regain compliance with nasdaqs listing rules