U.S. SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940 [_] Check box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). -------------------------------------------------------------------------------- 1. Name and Address of Reporting Person* O'Connell Robert F. -------------------------------------------------------------------------------- (Last) (First) (Middle) 8 Heather Lane -------------------------------------------------------------------------------- (Street) Walpole, Massachusetts 02081 -------------------------------------------------------------------------------- (City) (State) (Zip) -------------------------------------------------------------------------------- 2. Issuer Name and Ticker or Trading Symbol Patriot National Bancorp, Inc. ("PNBK") -------------------------------------------------------------------------------- 3. IRS Identification Number of Reporting Person, if an Entity (Voluntary) -------------------------------------------------------------------------------- 4. Statement for Month/Year May 2003 -------------------------------------------------------------------------------- 5. If Amendment, Date of Original (Month/Year) -------------------------------------------------------------------------------- 6. Relationship of Reporting Person to Issuer (Check all applicable) [X] Director [X] 10% Owner [X] Officer (give title below) [_] Other (specify below) Senior Executive Vice President and Chief Financial Officer -------------------------------------------------------------------------------- 7. Individual or Joint/Group Filing (Check applicable line) [X] Form filed by one Reporting Person [_] Form filed by more than one Reporting Person -------------------------------------------------------------------------------- ================================================================================ Table I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned ================================================================================

* ____ If the Form is filed by more than one Reporting Person, see Instruction 4(b)(v). Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. (Print or Type Response) (Over) FORM 4 (continued) Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) ================================================================================

Explanation of Responses: ROBERT F. O'CONNELL By: /s/ PAUL G. HUGHES May 1, 2003 --------------------------------------------- ----------------------- Attorney-in-fact **Signature of Reporting Person Date ** _____ Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space provided is insufficient, see Instruction 6 for procedure. Page 2 POWER OF ATTORNEY The undersigned, a director or officer of PATRIOT NATIONAL BANCORP, INC., a Connecticut corporation (the "Company"), hereby severally constitutes and appoints Robert F. O'Connell, Philip W. Wolford, Paul G. Hughes, Robert W. Reeves and Roxana Aleali, and each of them singly, my true and lawful attorneys with full power to them, and each of them singly, with full powers of substitution and resubstitution, to sign for me and in my name any report that I am required to file pursuant to Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), with respect to my ownership of securities of the Company and generally to do all such things in my name and on my behalf to enable me to comply with the provisions of Section 16 of the Exchange Act, and all requirements of the Securities and Exchange Commission, hereby ratifying and confirming my signature as it may be signed by my attorneys, or any of them, or their substitute or substitutes, to a report filed under such Section 16 on my behalf. This Power of Attorney shall remain in full force and effect until such time as I file a new Power of Attorney with the Securities and Exchange Commission designating one or more different attorneys for purposes of signing on my behalf such reports under Section 16 of the Exchange Act with respect to the securities of the Company. /s/ ROBERT F. O'CONNELL ---------------------------------- Robert F. O'Connell Date: October 29, 2002

O CONNELL ROBERT F 4