In connection with the proposed merger, ARCP and ARCT III have filed a definitive proxy statement with the SEC on January 22, 2013 and commenced mailing the definitive proxy statement and a form of proxy to the stockholders of ARCP and ARCT III. These materials are not a substitute for the definitive proxy statement or the Registration Statement on Form S-4 (File No. 333- 185935) that ARCP filed with the SEC in connection with the proposed merger with ARCT III. BEFORE MAKING ANY VOTING DECISION, INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE DEFINITIVE PROXY STATEMENT REGARDING THE PROPOSED MERGER CAREFULLY AND IN ITS ENTIRETY BECAUSE THE PROXY STATEMENT CONTAINS IMPORTANT INFORMATION ABOUT ARCP, ARCT III AND THE PROPOSED MERGER.