The tender offer described in this communication (the "Offer") has not yet commenced, and this communication is neither an offer to purchase nor a solicitation of an offer to sell any shares of the capital stock of Clearwire Corporation ("Clearwire") or any other securities. On the commencement date of the Offer, a tender offer statement on Schedule TO, including an offer to purchase, a letter of transmittal and related documents, will be filed with the United States Securities and Exchange Commission (the "SEC"). The offer to purchase shares of Clearwire stock will only be made pursuant to the offer to purchase, the letter of transmittal and related documents filed with such Schedule TO. The tender offer statement will be filed with the SEC by DISH Network Corporation ("DISH") and DISH Acquisition Holding Corporation, and Clearwire is obligated to file a solicitation/recommendation statement with the SEC.