<SEC-DOCUMENT>0001193125-15-166335-index.html : 20150501
<SEC-HEADER>0001193125-15-166335.hdr.sgml : 20150501
<ACCEPTANCE-DATETIME>20150501161342
ACCESSION NUMBER:		0001193125-15-166335
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20150501
DATE AS OF CHANGE:		20150501
EFFECTIVENESS DATE:		20150501

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NBT BANCORP INC
		CENTRAL INDEX KEY:			0000790359
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				161268674
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-203795
		FILM NUMBER:		15824487

	BUSINESS ADDRESS:	
		STREET 1:		52 S BROAD ST
		CITY:			NORWICH
		STATE:			NY
		ZIP:			13815
		BUSINESS PHONE:		6073372265

	MAIL ADDRESS:	
		STREET 1:		52 S. BROAD STREET
		CITY:			NORWICH
		STATE:			NY
		ZIP:			13815
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3ASR
<SEQUENCE>1
<FILENAME>d919268ds3asr.htm
<DESCRIPTION>FORM S-3ASR
<TEXT>
Document 1 - file: d919268ds3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.2
<SEQUENCE>2
<FILENAME>d919268dex42.htm
<DESCRIPTION>EX-4.2
<TEXT>
Document 2 - file: d919268dex42.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.3
<SEQUENCE>3
<FILENAME>d919268dex43.htm
<DESCRIPTION>EX-4.3
<TEXT>
Document 3 - file: d919268dex43.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>4
<FILENAME>d919268dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 4 - file: d919268dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.1
<SEQUENCE>5
<FILENAME>d919268dex121.htm
<DESCRIPTION>EX-12.1
<TEXT>
Document 5 - file: d919268dex121.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>6
<FILENAME>d919268dex232.htm
<DESCRIPTION>EX-23.2
<TEXT>
Document 6 - file: d919268dex232.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g919268g62u08.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g919268g62u08.jpg

</DOCUMENT>
</SEC-DOCUMENT>