[COHOES BANCORP, INC. LOGO] [HUDSON RIVER BANCORP, INC. LOGO] Dear Shareholders, Customers, Future Customers and Friends: Cohoes Bancorp and Hudson River Bancorp are strongly committed to our merger of equals. We are concerned that our shareholders and the public are being misled and deceived. We can't possibly address everything in one communication, so let's get to the heart of the matter. MYTH REALITY - --------------------------------------- ---------------------------------------- 1. TrustCo wants to buy our banks. 1. We believe TrustCo wants to sabotage our merger in order to prevent increased competition in this community. - --------------------------------------- ---------------------------------------- 2. Our banks are for sale. 2. We are not selling our banks separately, especially not at the inadequate prices suggested by TrustCo. It is our belief that our combined franchise is worth far more together than either of us is worth independently. - --------------------------------------- ---------------------------------------- 3. Our shareholders would financially 3. TrustCo stock has been declining or benefit from TrustCo's takeover. stagnant for over 18 months. It was valued at $15.00/share as of December 31, 1998. It was valued at $11.94/share on July 11, 2000. We believe that the TrustCo stock is still over-valued, and that there are several conditions to TrustCo's offers which will not be satisfied. - --------------------------------------- ---------------------------------------- 4. Competition would be enhanced by a 4. A TrustCo takeover would stifle TrustCo takeover of our banks. competition among community banks in the Capital Region and allow TrustCo to charge higher fees. TrustCo has not successfully acquired another bank in the Capital Region in more than nine years, the hottest period of bank merger activity in recent memory. Four years ago they failed to complete a takeover of another bank. HERE THEY GO AGAIN. We urge everyone to become as informed as possible about the facts. Please call us if you would like more information. Yours truly, /s/ Harry L. Robinson /s/ Carl A. Florio - --------------------------------------- ---------------------------------------- Harry L. Robinson Carl A. Florio President and CEO President and CEO Cohoes Bancorp Hudson River Bancorp (518) 233-6565 (518) 828-4600 This letter may contain forward- Hudson River has filed a looking statements within the meaning Registration Statement on Form S-4 of the Private Securities Litigation concerning the merger with the United Reform Act of 1995 that involve risk States Securities and Exchange and uncertainty. It should be noted Commission which includes the joint that a variety of factors could cause merger proxy statement/prospectus the combined company's actual results being provided to shareholders. In and experience to differ materially addition, Hudson River and Cohoes from the anticipated results or each intend to file a Solicitation/ expectations expressed in the Recommendation statement with the combined company's forward-looking United States Securities and Exchange statements. Commission in response to the Tender Offer Statement to be filed by The risks and uncertainties that TrustCo Bank Corp NY. WE URGE may affect the operations, INVESTORS TO READ THESE DOCUMENTS performance, development, growth BECAUSE THEY CONTAIN IMPORTANT projections and results of the INFORMATION. Investors are currently combined company's business include, able to obtain the Form S-4 but are not limited to, the growth of Registration Statement and will be the economy, interest rate movements, able to obtain the Solicitation/ timely development by the combined Recommendation Statement of each company of technology enhancements company when filed, free of charge at for its products and operating the SEC's website, www.sec.gov. In systems, the impact of competitive addition, documents filed with the products, services and pricing, SEC by Cohoes are available free of customer based requirements, charge from the Secretary of Cohoes Congressional legislation, at 75 Remsen Street, Cohoes, New acquisition cost savings and revenue York 12047, telephone (518) enhancements and similar matters. 233-6500. Documents filed with the Readers are cautioned not to place SEC by Hudson River are available undue reliance on forward-looking free of charge from the Secretary of statements which are subject to Hudson River at One Hudson City influence by the named risk factors Centre, Hudson, New York 12534, and unanticipated future events. telephone (518) 828-4600. Actual results, accordingly, may differ materially from management Cohoes and Hudson River and their expectations. respective directors and executive officers may be deemed to be Cohoes and Hudson River do not participants in the solicitation of undertake, and specifically disclaim, proxies to approve the Merger. any obligation to publicly release INFORMATION ABOUT THE PARTICIPANTS the results of any revisions which MAY BE OBTAINED THROUGH THE SEC'S may be made to any forward-looking WEBSITE FROM THE S-4 REGISTRATION statements to reflect the occurrence STATEMENT FILED WITH THE UNITED of anticipated or unanticipated STATES SECURITIES AND EXCHANGE events or circumstances after the COMMISSION ON JUNE 26, 2000, as date of such statements. amended.