# EDGAR Filing Document

**Accession Number:** 0000790359
**File Stem:** 0001690001-25-000045
**Filing Date:** 2025-8
**Character Count:** 6917
**Document Hash:** fcb70508bbe9363815d8a0577298529b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001690001-25-000045.hdr.sgml**: 20250804

**ACCESSION NUMBER**: 0001690001-25-000045

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250801

**FILED AS OF DATE**: 20250804

**DATE AS OF CHANGE**: 20250804

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** WATT JOHN H JR
- **CENTRAL INDEX KEY:** 0001265126

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-14703
- **FILM NUMBER:** 251178576

**MAIL ADDRESS:**
- **STREET 1:** 52 SOUTH BROAD STREET
- **CITY:** NORWICH
- **STATE:** NY
- **ZIP:** 13815
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NBT BANCORP INC
- **CENTRAL INDEX KEY:** 0000790359
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATIONAL COMMERCIAL BANKS [6021]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 161268674
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**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

### 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 Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>WATT JOHN H JR<br><sub>(Last) (First) (Middle)</sub><br>52 SOUTH BROAD STREET<br><sub>(Street)</sub><br>NORWICH, NY 13815<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-08-01 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>NBT BANCORP INC [ NBTB ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 1129 | D | $40.56 | 114898 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 2461 | D | $40.56 | 112437 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 965 | D | $40.56 | 111472 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 877 | D | $40.56 | 110595 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 4500 | D | $40.56 | 106095 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 1084 | D | $40.56 | 105011 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 839 | D | $40.56 | 104172 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 1645 | D | $40.56 | 102527 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 1084 | D | $40.56 | 101443 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 2015 | D | $40.56 | 99428 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 6506 | D | $40.56 | 92922 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 2015 | D | $40.56 | 90907 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 4958 | D | $40.56 | 85949 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 4048 | D | $40.56 | 81901 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 2015 | D | $40.56 | 79886 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 935 | D | $40.56 | 78951 | D |  |
| NBT Bancorp Inc. Common Stock | 2025-08-01 |  | F |  | 4991 | D | $40.56 | 73960 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

**Signature:** By: Annette L. Burns, Power of Attorney For: John H. Watt, Jr.  
**Date:** 2025-08-04

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** 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 is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**