Sandler O’Neill + Partners, L.P. is acting as financial advisor to SeaBright and has delivered a fairness opinion in connection with the transaction. Kirkland & Ellis LLP is acting as legal advisor and Mayer Brown LLP is acting as special regulatory counsel to SeaBright. Drinker Biddle & Reath LLP is acting as legal advisor to Enstar.About Enstar Enstar, a Bermuda company, acquires and manages insurance and reinsurance companies in run-off and portfolios of insurance and reinsurance business in run-off, and provides management, consultancy and other services to the insurance and reinsurance industry. About SeaBright SeaBright is a holding company whose wholly-owned subsidiary, SeaBright Insurance Company, operates as a specialty underwriter of multi-jurisdictional workers' compensation insurance. SeaBright Insurance Company distributes its maritime, alternative dispute resolution and state act products through selected independent insurance brokers, licensed program managers and its wholesale broker affiliate, PointSure Insurance Services, Inc. PointSure is licensed in 50 states and also offers insurance products from non-affiliated insurers. Paladin Managed Care Services, Inc., another SeaBright company, provides integrated managed medical care services to help employers control costs associated with on-the-job injuries. Additional Information and Where to Find It This communication is being made in respect of the proposed transaction involving Enstar and SeaBright. The proposed transaction will be submitted to the stockholders of SeaBright for their consideration. In connection with the proposed transaction, SeaBright will prepare and file a proxy statement with the Securities and Exchange Commission (the “SEC”). SeaBright and Enstar plan to file with the SEC other documents regarding the proposed transaction. STOCKHOLDERS OF SEABRIGHT ARE URGED TO READ THE PROXY STATEMENT REGARDING THE PROPOSED TRANSACTION AND ANY OTHER RELEVANT DOCUMENTS CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. The final proxy statement will be mailed to SeaBright stockholders. You may obtain copies of all documents filed with the SEC regarding the proposed transaction, free of charge, at the SEC’s website at www.sec.gov. In addition, stockholders may obtain free copies of the documents by going to SeaBright’s Investors website page at www.sbxhi.com/investors.html or by sending a written request to SeaBright Holdings, Inc., Attn: Linda Magee, Investor Relations, 1501 4 th Avenue, Suite 2600, Seattle, Washington 98101, or by calling Investor Relations at (206) 269-8500. The contents of the websites referenced above are not deemed to be incorporated by reference into the proxy statement. Interests of Participants SeaBright and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of SeaBright in connection with the proposed transaction. Information regarding SeaBright’s directors and executive officers is set forth in SeaBright’s proxy statement for its 2012 annual meeting of stockholders and its Annual Report on Form 10-K for the fiscal year ended December 31, 2011, which were filed with the SEC on April 12, 2012 and March 5, 2012, respectively. Additional information regarding persons who may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction and any direct or indirect interests of the SeaBright executive officers and directors in the merger will be contained in the proxy statement that SeaBright intends to file with the SEC.