Vishay Intertechnology Chairman Reduces Stake Amid Stock Sale Marc Zandman, Chairman of Vishay Intertechnology, sold 27,176 shares on March 4, reducing his ownership by 26.22%. The shares were sold at $16.88 each, totaling $458,730.88. This transaction comes as the company’s stock hovers near its 52-week low of $14.95, raising questions about insider confidence.123