Argo Group International Holdings, Ltd. (NasdaqGS: AGII) announced today it will release the company’s 2011 first quarter financial results after the close of U.S. financial markets on Monday, May 2, 2011. Company management will conduct an investor conference call starting at 11 a.m. EDT (Noon ADT) on Tuesday, May 3, 2010. CONNECTING TO THE CONFERENCE CALL A live webcast of the conference call can be accessed by visiting Argo Group’s Investor Relations Website at www.argolimited.com and clicking on Investors, then Events & Webcasts. Participants inside the U.S. and Canada can also access the call by phone by dialing (888) 713-4211 (pass code 37699300). Callers dialing from outside the U.S. and Canada can access the call by dialing (617) 213-4864 (pass code: 37699300). Argo Group is offering call participants a pre-registration option that expedites access to the call and minimizes hold times. Those who would like to take advantage of pre-registration can do so by accessing the following Website: https://www.theconferencingservice.com/prereg/key.process?key=PY86T9CHV Shortly after the conclusion of the conference call, a webcast replay will be made available through June 30, 2011, by visiting www.argolimited.com and clicking on the following links: Investors, then Events & Webcasts. In addition, a telephone replay of the call will be available through May 10, 2011, to callers dialing from inside the U.S. and Canada by dialing (888) 286-8010 (pass code 93675678). Callers dialing from outside the U.S. and Canada can access the call replay by dialing (617) 801-6888 (pass code 93675678). ABOUT ARGO GROUP INTERNATIONAL HOLDINGS, LTD. Argo Group International Holdings, Ltd. (NasdaqGS: AGII) is an international underwriter of specialty insurance and reinsurance products in the property and casualty market. Argo Group offers a full line of high-quality products and services designed to meet the unique coverage and claims handling needs of businesses in four primary segments: Excess & Surplus Lines, Commercial Specialty, Reinsurance, and International Specialty. Argo’s insurance subsidiaries are A. M. Best-rated 'A' (Excellent) (third highest rating out of 16 rating classifications) with a stable outlook, and Argo’s U.S. insurance subsidiaries are Standard and Poor’s-rated 'A-' (Strong) with a stable outlook. More information on Argo Group and its subsidiaries is available at www.argolimited.com.