INVESTOR ALERT: Levi & Korsinsky, LLP Announces an Investigation Concerning Whether the Sale of OneBeacon Insurance Group, Ltd. to Intact Financial Corporation is Fair to Shareholders -- OB

NEW YORK, May 9, 2017

To: All Persons or Entities who purchased OneBeacon Insurance Group, Ltd. ("OneBeacon") (NYSE:OB) stock prior to May 2, 2017.

You are hereby notified that Levi & Korsinsky has commenced an investigation into the fairness of the sale of OneBeacon to Intact Financial for $18.10 per share. To learn more about the action and your rights, go to:

http://zlk.9nl.com/onebeacon-insurance

or contact Joseph E. Levi, Esq. either via email at jlevi@levikorsinsky.com or by telephone at (212) 363-7500, toll-free: (877) 363-5972. There is no cost or obligation to you.

Levi & Korsinsky is a national firm with offices in New York, Connecticut, California, and Washington D.C. The firm's attorneys have extensive expertise in prosecuting securities litigation involving financial fraud, representing investors throughout the nation in securities lawsuits and have recovered hundreds of millions of dollars for aggrieved shareholders. For more information, please feel free to contact any of the attorneys listed below. Attorney advertising. Prior results do not guarantee similar outcomes.