X0306 4 2016-12-06 0 0000793547 NAVIGATORS GROUP INC NAVG 0001488411 Coward Stephen R C/O THE NAVIGATORS GROUP, INC. 400 ATLANTIC STREET, 8TH FLOOR STAMFORD CT 06901 0 1 0 0 President, NavTech (division) Common Stock 2016-12-06 4 S 0 1250 108.03 D 15987 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.01 to $108.12, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4. Excludes unvested shares of stock awards over which the Reporting Person does not have voting or dispositive control. Deepa R. Nayini, attorney-in-fact 2016-12-08