X0202 4 2005-02-16 0001307954 Huntsman CORP HUN 0001251956 MATLIN DAVID J 520 MADISON AVENUE NEW YORK NY 10022 1 0 1 0 Common Stock 2005-02-16 4 A 0 143869797 A 143869797 I By HMP Equity Trust Common Stock 2005-02-16 4 S 0 14093410 23.00 D 129776387 I By HMP Equity Trust HMP Equity Trust is controlled by its trustees, including the reporting person. The reporting person may be deemed to have a pecuniary interest in MatlinPatterson Global Opportunities Partners L.P., MatlinPatterson Global Opportunities Partners B, L.P. and MatlinPatterson Global Opportunities Partners (Bermuda) L.P. (collectively, the "Partnerships"), each of which is a beneficiary of HMP Equity Trust. The Partnerships hold dispositive power over certain shares held by HMP Equity Trust. The reporting person disclaims beneficial ownership of the shares held by HMP Equity Trust except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose. These shares were indirectly acquired in a reorganization transaction in exchange for equity interests in certain other entities. David J. Matlin 2005-02-18