<SEC-DOCUMENT>0001140361-18-020416-index.html : 20180430
<SEC-HEADER>0001140361-18-020416.hdr.sgml : 20180430
<ACCEPTANCE-DATETIME>20180430132258
ACCESSION NUMBER:		0001140361-18-020416
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20180430
DATE AS OF CHANGE:		20180430
EFFECTIVENESS DATE:		20180430

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:	333-224532
		FILM NUMBER:		18788274

	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>s002241x1_s3asr.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: s002241x1_s3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>s002241x1_ex5-1.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
Document 2 - file: s002241x1_ex5-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.1
<SEQUENCE>3
<FILENAME>s002241x1_ex12-1.htm
<DESCRIPTION>EXHIBIT 12.1
<TEXT>
Document 3 - file: s002241x1_ex12-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>4
<FILENAME>s002241x1_ex23-2.htm
<DESCRIPTION>EXHIBIT 23.2
<TEXT>
Document 4 - file: s002241x1_ex23-2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>logo_nbtbancorp.jpg
<TEXT>
Document 5 - file: logo_nbtbancorp.jpg

</DOCUMENT>
</SEC-DOCUMENT>