Live feed11:23:10·866dINSIDERFilingvia QuantisnowPribyl Brian Mark exercised 2,328 shares at a strike of $219.94 and returned $1,122,096 worth of shares to the company (2,328 units at $482.00) (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.NWLI· National Western Life Group Inc.FinanceOriginal source