Exhibit 99.4 NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION...Securities Agreement • January 7th, 2005 • McCc ICG Holdings LLC • Telephone communications (no radiotelephone)
CONFIDENTIALSupport Agreement • July 30th, 2004 • McCc ICG Holdings LLC • Telephone communications (no radiotelephone) • Delaware
EXHIBIT 1 SCHEDULE 13D JOINT FILING AGREEMENT In accordance with the requirements of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and subject to the limitations set forth therein, the parties set forth below agree to the joint...Joint Filing Agreement • July 30th, 2004 • McCc ICG Holdings LLC • Telephone communications (no radiotelephone)
Exhibit 99.2 SCHEDULE 13D JOINT FILING AGREEMENT In accordance with the requirements of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and subject to the limitations set forth therein, the parties set forth below agree to the...Joint Filing Agreement • January 7th, 2005 • McCc ICG Holdings LLC • Telephone communications (no radiotelephone)
VOTING AGREEMENTVoting Agreement • May 15th, 2006 • McCc ICG Holdings LLC • Telephone communications (no radiotelephone) • New York
VOTING AGREEMENT, dated as of May 4, 2006 (this “Agreement”), among U.S. TelePacific Holdings Corp., a Delaware corporation (“Parent”) and the stockholders of Mpower Holding Corporation, a Delaware corporation (the “Company”) listed on Schedule A hereto (each a “Stockholder” and collectively the “Stockholders”).
SCHEDULE 13D JOINT FILING AGREEMENTJoint Filing Agreement • June 6th, 2006 • McCc ICG Holdings LLC • Telephone communications (no radiotelephone)
In accordance with the requirements of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and subject to the limitations set forth therein, the parties set forth below agree to the joint filing of a Statement on Schedule 13D (including any amendments thereto) with respect to the shares of common stock of Mpower Holding Corporation, and further agree that this Joint Filing Agreement be included as an exhibit thereto, and have duly executed this joint filing agreement as of the date set forth below. In addition, each party to this Joint Filing Agreement expressly authorizes each other party to this Agreement to file on its behalf any and all amendments to such Statement.
AMENDMENT TO VOTING AGREEMENTVoting Agreement • June 6th, 2006 • McCc ICG Holdings LLC • Telephone communications (no radiotelephone) • New York
This AMENDMENT TO VOTING AGREEMENT (this “Amendment”) is entered into as of May 31, 2006 among U.S. TelePacific Holdings Corp., a Delaware corporation (“Parent”), and the stockholders of Mpower Holding Corporation, a Delaware corporation (the “Company”), listed as a “Stockholder” on the signature page hereto (each, a “Stockholder” and, collectively, the “Stockholders”).
SCHEDULE 13D JOINT FILING AGREEMENTJoint Filing Agreement • May 15th, 2006 • McCc ICG Holdings LLC • Telephone communications (no radiotelephone)
In accordance with the requirements of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and subject to the limitations set forth therein, the parties set forth below agree to the joint filing of a Statement on Schedule 13D (including any amendments thereto) with respect to the shares of common stock of Mpower Holding Corporation, and further agree that this Joint Filing Agreement be included as an exhibit thereto, and have duly executed this joint filing agreement as of the date set forth below. In addition, each party to this Joint Filing Agreement expressly authorizes each other party to this Agreement to file on its behalf any and all amendments to such Statement.
