Live feed17:07:45·870dINSIDERFilingvia QuantisnowMartinez Carlos A returned $481,540 worth of shares to the company (1,000 units at $481.54) and exercised 1,063 shares at a strike of $197.76 (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.NWLI· National Western Life Group Inc.FinanceOriginal source