FIRST AMENDMENT TO THE SUPPLEMENTAL EXECTIVE RETIREMENT AGREEMENT

Ex hib it 10.25

FIRST AMENDMENT TO

THE SUPPLEMENTAL EXECTIVE RETIREMENT AGREEMENT

EFFECTIVE JULY 23, 2001

WHEREAS, this is the first amendment (the “First Amendment”) to the NBT Bancorp Inc. Supplemental Executive Retirement Plan, effective as of July 23, 2001 (the “SERP”);

WHEREAS, the SERP, as amended, is between NBT Bancorp Inc. , a Delaware corporation and a registered financial holding company headquartered at 52 S. Broad Street, Norwich, New York 13815, and Michael J. Chewens , an individual residing at 30 Pine Meadow Road, Vestal, New York, 13850;

NOW, THEREFORE, the SERP is amended, effective as of January 1, 2005, as follows:

1.             Section 7.1 of the SERP shall be amended by deleting the second paragraph therein in its entirety.

2.             Section 7.2 of the SERP shall be amended by deleting the phrase “Except with respect to receipt of a lump sum benefit under Section 7.1,” i