4 1 edgar.txt FORM 4 - MARCH 31, 2002 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP ( ) Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instructions 1(b). 1. Name and Address of Reporting Person DETWILER, DENNIS L 553 PATERNO DRIVE HARLEYSVILLE, PA 19438 USA 2. Issuer Name and Ticker or Trading Symbol HARLEYSVILLE NATIONAL CORPORATION HNBC 3. IRS or Social Security Number of Reporting Person (Voluntary) 4. Statement for Month/Year MARCH 31, 2002 5. If Amendment, Date of Original (Month/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) ( ) Director ( ) 10% Owner (X) Officer (give title below) ( ) Other (specify below) SR. VICE PRESIDENT - HNB; A SUBSIDIARY OF HNC 7. Individual or Joint/Group Filing (Check Applicable Line) (X) Form filed by One Reporting Person ( ) Form filed by More than One Reporting Person

Explanation of Responses: *Shares purchased through Dividend Reinvestment Program (1) The option vested in two equal installments on Oct. 27, 1999 and 2000 (2) The option vested in 12/01. 20% over 5 consecutive years commencing on 12/1/01 SIGNATURE OF REPORTING PERSON /s/Elizabeth F. Chemnitz for Dennis L. Detwiler DATE April 1, 2002

DETWILER DENNIS L 4