X0202 4 2005-10-17 1 0000892553 CHART INDUSTRIES INC CIDI 0001264607 AUDAX CHART LLC 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 0001264604 AUDAX PRIVATE EQUITY BUSINESS LLC 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 0001264605 AUDAX PRIVATE EQUITY BUSINESS LP 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 0001264606 AUDAX HOLDINGS I LLC 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 0001264573 AUDAX GROUP LP 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 0001097123 AUDAX PRIVATE EQUITY FUND L P 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 0001264945 AUDAX MANAGEMENT CO LLC 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 0001208476 101 HUNTINGTON HOLDINGS LLC 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 0001075976 WOLPOW MARC B 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 0001264373 REHNERT GEOFFREY S 101 HUNTINGTON AVENUE BOSTON MA 02199 0 0 1 0 Common Stock 2005-10-17 4 S 0 1032992 64.75 D 0 I See footnote Sold to CI Acquisition, Inc. (the "Buyer") pursuant to an Agreement and Plan of Merger, dated as of August 2, 2005, among the Issuer, First Reserve Fund X, L.P., certain principal stockholders of the Issuer, including Audax Chart LLC, and the Buyer. Additional Reporting Persons: Audax Private Equity Fund, L.P., Audax Private Equity Business, L.L.C., Audax Private Equity Business, L.P., Audax Holdings I, L.L.C., Audax Group, L.P., 101 Huntington Holdings, L.L.C., Marc B. Wolpow, Geoffrey S. Rehnert and Audax Management Company, LLC Audax Chart LLC ("Audax Chart") was the direct beneficial owner of the Common Stock. Marc B. Wolpow and Geoffrey S. Rehnert are the managing members of 101 Huntington Holdings, L.L.C., which is the general partner of Audax Group, L.P., which is the sole managing member of Audax Holdings I, L.L.C., which is the general partner of Audax Private Equity Business, L.P., which is the sole managing member of Audax Private Equity Business, L.L.C., which is the general partner of Audax Private Equity Fund, L.P., which is the sole managing member of Audax Chart. Audax Management Company, LLC has been granted a proxy over certain shares of the Issuer. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interest therein. The filing of this form shall not be deemed an admission that the Reporting Person is, for purposes of Section 16 or otherwise, the beneficial owner of such shares. Audax Chart LLC By: Richard T. Joseph, Authorized Signatory 2005-10-19 Audax Private Equity Fund, L.P. By: Audax Private Equity Business, L.L.C., its general partner By: Richard T. Joseph, Authorized Signatory 2005-10-19 Audax Private Equity Business, L.L.C. By: Richard T. Joseph, Authorized Signatory 2005-10-19 Audax Private Equity Business, L.P. By: Audax Holdings I, L.L.C., its general partner By: Audax Group, L.P., its managing member By: 101 Huntington Holdings, L.L.C., its general partner By: Richard T. Joseph, Authorized Signatory 2005-10-19 Audax Holdings I, L.L.C. By: Audax Group, L.P., its managing member By: 101 Huntington Holdings, L.L.C., its general partner By: Richard T. Joseph, Authorized Signatory 2005-10-19 Audax Group, L.P. By: 101 Huntington Holdings, L.L.C., its general partner By: Richard T. Joseph, Authorized Signatory 2005-10-19 101 Huntington Holdings, L.L.C. By: Richard T. Joseph, Authorized Signatory 2005-10-19 Audax Management Company, LLC By: Audax Group, L.P., its managing member By: 101 Huntington Holdings, L.L.C., its general partner By: Richard T. Joseph, Authorized Signatory 2005-10-19 Marc B. Wolpow 2005-10-19 Geoffrey S. Rehnert 2005-10-19