X0306 4 2016-06-06 0 0001091748 Argo Group International Holdings, Ltd. AGII 0001435222 Bullock Jay Stanley ARGO GROUP INTERNATIONAL HOLDINGS, LTD. 110 PITTS BAY ROAD PEMBROKE, HM 08 D0 BERMUDA 0 1 0 0 Chief Financial Officer Common Stock 2016-06-06 4 M 0 14629 21.05 A 95718 D Common Stock 2016-06-06 4 D 0 5764 53.43 D 89954 D Common Stock 2016-06-06 4 S 0 8865 53.491 D 81089 D Common Stock 2016-06-07 4 M 0 3943 21.05 A 85032 D Common Stock 2016-06-07 4 D 0 1560 53.22 D 83472 D Common Stock 2016-06-07 4 S 0 2383 53.524 D 81089 D Stock Appreciation Rights 21.05 2016-06-06 4 M 0 14629 0.00 D 2017-03-01 Common Stock 14629 29261 D Stock Appreciation Rights 21.05 2016-06-07 4 M 0 3943 0.00 D 2017-03-01 Common Stock 3943 25318 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.38 to $53.65, inclusive. The reporting person undertakes to provide to Argo Group International Holdings, Ltd., any security holder of Argo Group International Holdings, Ltd., 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.33 to $53.65, inclusive. The reporting person undertakes to provide to Argo Group International Holdings, Ltd., any security holder of Argo Group International Holdings, Ltd., 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 (2) to this Form 4. Includes the effect of an adjustment for Argo Group's 10% stock dividend having a June 1, 2016 record date. The stock appreciation rights vested in four equal annual installments beginning on March 1, 2011. /s/ Craig S. Comeaux, attorney-in-fact 2016-06-08