Regulatory News

August 7, 2012

Castle Alternative Invest AG

Weekly Estimated Net Asset Value

The estimated Net Asset Value per share as of August 3, 2012 was:

   USD    16.25  (estimated week to date rate of return:  +0.06%)  

   CHF    15.78   (estimated week to date rate of return:  -0.06%) 

Please note the above estimate is after estimated costs and fees. This valuation, which has been  prepared in good faith by the Company's Administrator and Investment Adviser, is for information purposes only and is based on the unaudited estimated valuations supplied to the Company's Investment Adviser by investee funds, their managers, investment advisers or administrators. Although the Administrator and the Investment Adviser have evaluated all available information and data, they have not confirmed the completeness or accuracy of such information or data. In some cases managers or administrators of underlying hedge funds may not be able to provide their estimated value in a timely manner, and as a result no change will be made to their estimated value for the purposes of this valuation. When finally determined, the actual month end Net Asset Value may therefore be materially different from this estimated value. Accordingly, no reliance should be placed on such estimated Net Asset Value and it should only be taken as an indicative guide.

For further information, please contact:

Mark White, General Manager, telephone +44 (0)207  529 0960

Pia Skogstrom, Investor Relations, telephone +44 (0)207   529 0971

or e-mail: lgt.cai@lgt.com

www.castleai.com

Neither the contents of the Company's website nor the contents of any website accessible from hyperlinks on the Company's website (or any other website) is incorporated into, or forms part of, this announcement.

Swiss Security Number 509.275

A joint stock corporation incorporated on July 30, 1996 under Swiss laws

Registered Office: Schuetzenstrasse 6, 8808 Pfaeffikon/SZ, Switzerland

Telephone +41 55 415 9487

Fax +41 55 415 9488