X0306 4 2017-09-28 true 0001369817 OneBeacon Insurance Group, Ltd. OB 0001570391 Brehm Paul J 605 HIGHWAY 169 NORTH SUITE 800 PLYMOUTH MN 55441 true EVP & Chief Actuary Class A Common Shares 2017-09-28 4 D 0 74778 18.1 D 0 D Class A Common Shares 2017-09-28 4 D 0 3014 18.1 D 0 I in 401(k) ESOP Disposition in connection with the merger (the "Merger") between Intact Acquisition Co. Ltd. and OneBeacon Insurance Group, Ltd. ("OneBeacon"), exempt pursuant to Rule 16b-3, in which each outstanding Class A common share of OneBeacon ("Class A Share") was converted into the right to receive an amount in cash equal to $18.10 per share. Amount includes 63,097 restricted shares, which were converted into the right to receive an amount in cash equal to $18.10 per share plus any accrued dividends; such cash amount shall continue to be subject to service-based vesting conditions. Disposition in connection with the Merger, exempt pursuant to Rule 16b-3, in which each outstanding Class A Share was converted into the right to receive an amount in cash equal to $18.10 per share. /s/ Sarah A. Kolar, Attorney-in-Fact 2017-09-28