Impath Inc Watch

from SC 13G/A 1 page Joint Filing Agreement

from SC 13D 1 page <page> Exhibit 1 Information With Respect to Open-Marketing Transactions of the Common Stock by Mellon Hbv Alternative Strategies LLC During the Past Sixty Days. Amount of Price Per Type of Date Shares Share Transaction - 10/2/2003 100,000 $1.59 Buy 10/3/2003 35,400 $1.70 Buy 10/6/2003 100,000 $2.08 Buy 10/6/2003 1,800 $2.20 Buy 10/6/2003 5,000 $2.30 Buy 10/7/2003 13,000 $2.30 Buy 10/7/2003 135,000 $2.20 Buy 10/8/2003 5,000 $2.20 Buy 10/8/2003 260,000 $2.17 Buy 10/8/2003 10,000 $2.10 Buy 10/10/2003 305,000 $2.01 Buy 10/15/2003 20,000 $2.00 Buy 10/21/2003 3,200 $2.075 Buy 10/23/2003 34,000 $2.125 Buy

from SC 13G 1 page <page> Exhibit 1 Joint Filing Agreement in Accordance With Rule 13d-1(k) Promulgated Under the Securities Exchange Act of 1934, as Amended, the Persons Named Below Agree to the Joint Filing on Behalf of Each of Them a Statement on Schedule 13g (Including Amendments Thereto) With Regard to the Common Stock of Impath Inc., a Delaware Corporation, and Further Agree That This Joint Filing Agreement Be Included as an Exhibit to Such Joint Filings. in Evidence Thereof, the Undersigned, Being Duly Authorized, Hereby Execute This Joint Filing Agreement as of October 3, 2003. Ws Capital, L.L.C. By: /S/ Reid S. Walker Reid S. Walker, Member Ws Capital Management, L.P. By: Ws Capital, L.L.C., Its General Partner By: /S/ Reid S. Walker Reid S. Walker, Member Walker Smith Capital Master Fund By: Ws Capital Management, L.P., Its Agent and Attorney-In-Fact By: Ws Capital, L.L.C., Its General Partner By: /S/ Reid S. Walker Reid S. Walker, Member Walker Smith International Fund, Ltd. By: Ws Capital Management, L.P., Its Agent and Attorney-In-Fact By: Ws Capital, L.L.C., Its General Partner By: /S/ Reid S. Walker Reid S. Walker, Member Wsv Management, L.L.C. By: /S/ Reid S. Walker Reid S. Walker, Member <page> Ws Ventures Management, L.P. By: Wsv Management, L.L.C., Its General Partner By: /S/ Reid S. Walker Reid S. Walker, Member Ws Opportunity Master Fund By: Ws Ventures Management, L.P., Its Agent and Attorney-In-Fact By: Wsv Management, L.L.C., Its General Partner By: /S/ Reid S. Walker Reid S. Walker, Member Ws Opportunity Fund International, Ltd. By: Ws Ventures Management, L.P., Its Agent and Attorney-In-Fact By: Wsv Management, L.L.C., Its General Partner By: /S/ Reid S. Walker Reid S. Walker, Member /S/ Reid S. Walker Reid S. Walker /S/ G. Stacy Smith G. Stacy Smith /S/ Patrick P. Walker Patrick P. Walker

from SC 13G/A 1 page Exhibit 1 Joint Filing Agreement

from SC 13G 1 page <page> Exhibit 1 Joint Filing Agreement Waddell & Reed Financial, Inc., Waddell & Reed Financial Services, Inc., Waddell & Reed, Inc. and Waddell & Reed Investment Management Company (The "Filing Persons"), Hereby Agree to File Jointly a Schedule 13g and Any Amendments Thereto Relating to the Aggregate Ownership by Each of the Filing Persons of Any Voting Equity Security of a Class Which Is Registered Pursuant to Section 12 of the Securities Exchange Act of 1934, as Amended, as Required by Rule 13d-1 and Rule 13d-2 Promulgated Under the Securities Exchange Act of 1934. Each of the Filing Persons Agrees That the Information Set Forth in Such Schedule 13g and Any Amendments Thereto With Respect to Such Filing Person Will Be True, Complete and Correct as of the Date of Such Schedule 13g or Such Amendment, to the Best of Such Filing Person's Knowledge and Belief, After Reasonable Inquiry. Each of the Filing Persons Makes No Representations as to the Accuracy or Adequacy of the Information Set Forth in the Schedule 13g or Any Amendments Thereto With Respect to Any Other Filing Person. Each of the Filing Persons Shall Promptly Notify the Other Filing Persons if Any of the Information Set Forth in the Schedule 13g or Any Amendments Thereto Shall Become Inaccurate in Any Material Respect or if Said Person Learns of Information That Would Require an Amendment to the Schedule 13g. in Witness Whereof, the Undersigned Have Set Their Hands This 8th Day of August 2002. Waddell & Reed Financial, Inc. Waddell & Reed Financial Services, Inc. By: /S/ Daniel C. Schulte By: /S/ Wendy J. Hills Name: Daniel C. Schulte Name: Wendy J. Hills Title: Vice President Title: Attorney-In-Fact Waddell & Reed, Inc. Waddell & Reed Investment Management Company By: /S/ Wendy J. Hills By: /S/ Wendy J. Hills Name: Wendy J. Hills Name: Wendy J. Hills Title: Attorney-In-Fact Title: Attorney-In-Fact

from S-3/A ~50 pages Form of Underwriting Agreement

from SC 13G 1 page <page> 1 - Cusip No. 452 55g 10 1 13g Page 11 of 11 - Exhibit 1 Agreement Pursuant to Rule 13d-1(f) (1) Under the Securities Exchange Act of 1934, the Undersigned Hereby Agree That Only One Statement Containing the Information Required by Schedule 13g Need Be Filed With Respect to the Ownership by Each of the Undersigned of Shares of Common Stock of Impath Inc.. This Agreement May Be Executed in Any Number of Counterparts, Each of Which Shall Be Deemed an Original. Executed This 20th Day of February, 1997. Cross Atlantic Partners K/S By: Cap/Hambro, L.P. Its General Partner By: /S/ Charles L. Dimmler, III Charles L. Dimmler, III Authorized Officer By: Cap/Hambro, Inc. Its General Partner By: /S/ Charles L. Dimmler, III Charles L. Dimmler, III Authorized Officer Cap/Hambro, Inc. By: /S/ David Barnett David Barnett Authorized Officer Hambro America, Inc. By: /S/ David Barnett David Barnett Authorized Officer Page 11 of 11