ICF International Inc. Watch

from 10-K 1 page Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934

from 10-K 1 page Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934

from 10-K 1 page Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934

from S-8 7 pages Amended and Restated Certificate of Incorporation of ICF International, Inc

from S-1/A 2 pages Common Stock ICF International, Inc. Incorporated Under the Laws of the State of Delaware See Reverse for Certain Definitions Cusip 44925c 10 3 This Certifies That Is the Owner of Fully Paid and Non-Assessable Shares of the Common Stock, Par Value $0.001 Per Share, of ICF International, Inc. Transferable on the Books of the Corporation by the Holder Hereof in Person or by Duly Authorized Attorney Upon Surrender of This Certificate Properly Endorsed. This Certificate Is Not Valid Unless Countersigned and Registered by the Transfer Agent and Registrar. Witness the Facsimile Seal of the Corporation and the Facsimile Signatures of Its Duly Authorized Officers. Dated: Ceritificate of Stock Signature to Come President and Chief Executive Officer Signature to Come Secretary and Chief Financial Officer Countersigned and Registered: American Stock Transfer & Trust Company (New York, Ny) Transfer Agent and Registrar by Authorized Signature

from S-1 24 pages Form of ICF International, Inc. Amended and Restated Registration Rights Agreement Dated as of April 28, 2006