The stock is down 25 percent from its 12-month high of $38.03 on Feb. 27, just before a series of insider stock sales. Insiders, mainly the founding Greenberg family, have sold $23.3 million of stock this year, according to InsiderScore's Ben Silverman. The heaviest selling took place in March when patriarch Robert Greenberg converted 526,400 Class B shares into Class A shares and then sold them for a gain of $18.4 million. His son Michael converted and sold 100,000 Class B shares in May, netting $3.1 million. The Greenbergs continue to control 71 percent of the voting power of Skechers through Class B shares, which can be converted into Class A shares on a one-to-one ratio. Robert Greenberg also founded L.A. Gear, the popular sneaker company that crashed and burned on the heels of the 1980s aerobics craze.