1. The Company entered into an Agreement with American International Ventures, Inc. which is traded on the OTC Market (Ticker: AIVN). The Agreement which was signed on February 24, 2016 and concluded this week calls for the exchange of 1,500,000 free trading shares of Gold Mining USA, Inc., also traded on the OTC Market (Ticker: GMUI) for 2,000,000 shares of the Company's restricted shares. The Company believes the GMUI shares can provide it with added working capital in the future and the shares are currently being held for investment purposes. This is another step in the direction of the Company to become an even more active holding company and builder of assets.

2. The Company CEO has filed a Provisional Patent for a new concept in Crowd Funding through its subsidiary Shark Venture Capital, Inc. The show is called Start Me Up TV. The show is dedicated to Crowd Funding on TV. The goal is to help entrepreneurs get their product or service shown on an audience-driven live Crowd Funding TV Show thus Start Me Up TV. The show debuted on Studio 21 in Radnor, PA on March 18, 2016. The Company believes it is backing the first Crowd Funding television show. Start Me Up TV could make a fun live weekly TV show with audience participation. The Company intends to raise added capital to broaden the show for what it hopes could be seen on a national network.

Castle Holding Corp. (the "Company" has an objective to increase visibility of the Company as well as to formulate a plan of action to build the Company into a leading edge merger and acquisition model. That model could take the form of improvement that is currently employed by a publicly owned holding company investment manager like Berkshire Hathaway, Inc. Another possible improved model could be in the bettering of a business development corporation format like Main Street Capital Corporation.

This press release contains certain "forward-looking" statements, defined in the United States Private Securities Litigation Reform Act of 1995, that involve a number of risks and uncertainties. Statements, which are not historical facts, are forward-looking statements. The company, through its management, makes forward-looking public statements concerning its expected future operations, performance and other developments. Such forward-looking statements are estimates reflecting the Company's best judgment based upon current information and involve a number of risks and uncertainties, and there can be no assurance that other factors will not affect the accuracy of such forward-looking statements. It is impossible to identify all such factors, factors that could cause actual results to differ materially from those estimated by the Company. This press release is provided for information purposes only and is not intended to constitute an offer to sell or a solicitation of an offer to buy securities.