============= Page 1 of 1 ============= Kenneth L Lay Chairman of the Board Enron Corp. ® P.O. Box 1188 Houston, TX 77251-1188 713-853-6773 Fax 713-853-5313 June 29, 2001 kenneth.lay@enron.com Rocky Emery Paine Webber, Inc. Private Client Group 109 N. Post Oak Lane, Suite 150 Houston, TX 77024 RE: Sale of 85,616 shares of Enron Corp. to Company for Repayment of $4,000,000 LOC plus accrued interest through June 27, 2001 Dear Rocky: This letter is your authority to transfer 2,310 shares of Enron Corp. stock from the stock option award, Grant #8781, with an exercise date of 5/04199 in Paine Webber Acct. HM-E0133-ESfito the Enron Corp. Omnibus Paine Webber Acct. HS-54630-EN by or before F d.ay, July 2, 2001. The remaining 83,074 shares will be delivered in certificate form directly to Enron Corp. Please call Sherrie Gibson at 713/630-0103 should you have any questions. Sincerely, CC: Elaine Overturf Pam Butler Joanne Cortez Sherrie Gibson EC38648B0050205 6-ct7'h / Endless possibilities."' XH063-00324 GOVERNMENT EXHIBIT 4106 Crim. No. H-04-25 (S-2)