[Form 4] NBT Bancorp Inc Insider Trading Activity

Rhea-AI Filing Summary

David J. Nasca, a director of NBT Bancorp Inc. (NBTB), reported a sale of company common stock on 08/13/2025. The Form 4 shows 19,603 shares were sold at an average price of $43.417 per share, with the filer noting prices ranged between $43.32 and $43.54. After the reported sale, the filing lists 82,910 shares held directly and 2,133 shares held indirectly by a trust. The form was signed by a power of attorney on behalf of Mr. Nasca on 08/15/2025.

Positive

• Timely disclosure of the insider sale filed as required under Section 16
• Clear price information including average sale price and price range (between $43.32 and $43.54)
• Post-transaction ownership disclosed showing both direct (82,910 shares) and indirect (2,133 shares) holdings

Negative

• Director reduced direct holdings by 19,603 shares in the reported transaction
• Single large sale may be viewed by some investors as a material change in insider ownership concentration

Insights

Corporate Governance Expert

TL;DR: A director disclosed a routine sale, with continued direct and indirect ownership remaining post-transaction.

The filing documents a disclosed transaction by a director, which meets Section 16 reporting requirements and preserves public transparency. The report specifies the exact number of shares sold and the average sale price, and it records remaining direct and indirect holdings. From a governance perspective, timely filing and clear explanation of the sale price range are positive compliance indicators. The use of a power of attorney to sign the filing is documented.

Securities Analyst

TL;DR: Insider sold 19,603 shares at an average of $43.417; substantial direct and trust holdings remain.

The Form 4 shows a single non-derivative sale transaction on 08/13/2025 with a disclosed average sale price and a note on the price range. The filing also discloses post-transaction beneficial ownership broken into direct and indirect components, which allows investors to see the director's retained exposure. The disclosure is concise and contains the standard explanatory note about the sale price calculation.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

NASCA DAVID J

(Last) (First) (Middle)

52 SOUTH BROAD STREET

(Street)

NORWICH NY 13815

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
NBT BANCORP INC [ NBTB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/13/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
NBT Bancorp Inc. Common Stock	08/13/2025		S		19,603	D	$43.417(1)	82,910	D
NBT Bancorp Inc. Common Stock								2,133	I	by Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sale price is an average of 19,603 shares sold at prices between 43.32 and 43.54.

	By: Annette L. Burns, Power of Attorney For: David J. Nasca	08/15/2025
	** Signature of Reporting Person	Date
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.

FAQ

What did David J. Nasca report on Form 4 for NBTB?

The Form 4 reports a sale of 19,603 shares of NBT Bancorp Inc. common stock executed on 08/13/2025.

At what price were the NBTB shares sold by the director?

The sale was reported at an average price of $43.417 per share, with prices ranging between $43.32 and $43.54.

How many NBTB shares does the reporting person own after the transaction?

After the reported sale the filing lists 82,910 shares held directly and 2,133 shares held indirectly by a trust.

When was the Form 4 signed and by whom?

The Form 4 was signed on 08/15/2025 by Annette L. Burns as Power of Attorney for David J. Nasca.

Was the transaction non-derivative or derivative?

The filing shows a non-derivative transaction: a sale of common stock shares.