Exhibit 4.1 AMENDMENT NO. 1 TO THE PREFERRED SUBSCRIPTION AGREEMENT AMENDMENT NO. 1 TO THE PREFERRED SUBSCRIPTION AGREEMENT, dated as of February 13, 2004 (this "Amendment"), among Waste Services, Inc., a Delaware corporation ("WSI"), Capital...Preferred Subscription Agreement • February 26th, 2004 • Capital Environmental Resource Inc • Refuse systems • New York
Contract Type FiledFebruary 26th, 2004 Company Industry Jurisdiction
SECTION 1Preferred Subscription Agreement • July 15th, 2003 • Capital Environmental Resource Inc • Refuse systems • Delaware
Contract Type FiledJuly 15th, 2003 Company Industry Jurisdiction
EXHIBIT 4.4 WASTE SERVICES, INC. CAPITAL ENVIRONMENTAL RESOURCE INC. PREFERRED SUBSCRIPTION AGREEMENT MAY 6, 2003 TABLE OF CONTENTSPreferred Subscription Agreement • July 15th, 2003 • Capital Environmental Resource Inc • Refuse systems • New York
Contract Type FiledJuly 15th, 2003 Company Industry Jurisdiction
AMENDMENT NO. 2 TO THE PREFERRED SUBSCRIPTION AGREEMENTPreferred Subscription Agreement • June 9th, 2004 • Capital Environmental Resource Inc • Refuse systems • New York
Contract Type FiledJune 9th, 2004 Company Industry JurisdictionAMENDMENT NO. 2 TO THE PREFERRED SUBSCRIPTION AGREEMENT, dated as of June 8, 2004 (this “Amendment”), among Waste Services, Inc., a Delaware corporation (“WSI”), Capital Environmental Resource Inc., a corporation amalgamated under the laws of the Province of Ontario, Canada (“CERI”), Kelso Investment Associates VI, L.P., a Delaware limited partnership, and KEP VI, LLC, a Delaware limited liability company.