Director Sengstack Gregg C acquired 21,655 shares, exercised 15,000 shares at a strike of $29.08, covered exercise/tax liability with 8,673 shares, sold $1,143,239 worth of shares (11,779 units at $97.06) and disposed of 21,655 shares, decreasing direct ownership by 19% to 110,056 units (SEC Form 4)