NBT Bancorp director receives 1,050-share stock grant

NBT Bancorp Inc. director Martin A. Dietrich received a grant of 1,050 shares of NBT Bancorp Inc. common stock as equity compensation.

Rhea-AI Filing Summary

NBT Bancorp Inc. director Martin A. Dietrich received a grant of 1,050 shares of NBT Bancorp Inc. common stock as equity compensation. The award was acquired at a price of $0.00 per share under the NBT Bancorp Inc. 2024 Omnibus Incentive Plan as part of the annual retainer for outside directors, delivered in the form of restricted stock units that vest in one year. Following this grant, Dietrich directly holds 112,294 shares of the company’s common stock.

Insider Trade Summary

Grant/Award: 1,050 shares

Grant/Award 1 txn

Insider DIETRICH MARTIN A

Role Director

Type	Security	Shares	Price	Value
Grant/Award	NBT Bancorp Inc. Common Stock	1,050	$0.00	$0.00

Holdings After Transaction: NBT Bancorp Inc. Common Stock — 112,294 shares (Direct)

Footnotes (1)

1. F1. Acquired pursuant to the NBT Bancorp Inc. 2024 Omnibus Incentive Plan. Each outside director is entitled to receive an annual retainer for Board service in the form of restricted stock units of the Company's common stock that vest in one year.

Key Figures

Shares granted: 1,050 shares Grant price: $0.00 per share Post-transaction holdings: 112,294 shares +2 more

5 metrics

Shares granted 1,050 shares Director equity grant on 2026-05-19

Grant price $0.00 per share Equity award under 2024 Omnibus Incentive Plan

Post-transaction holdings 112,294 shares Shares directly held by Martin A. Dietrich after grant

Vesting period One year Restricted stock units vest in one year

Transaction code A Grant, award, or other acquisition of non-derivative security

Key Terms

restricted stock units, 2024 Omnibus Incentive Plan, annual retainer, Grant, award, or other acquisition

4 terms

restricted stock units financial

"in the form of restricted stock units of the Company's common stock that vest in one year"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2024 Omnibus Incentive Plan financial

"Acquired pursuant to the NBT Bancorp Inc. 2024 Omnibus Incentive Plan"

annual retainer financial

"Each outside director is entitled to receive an annual retainer for Board service in the form of restricted stock units"

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did NBT Bancorp (NBTB) report for Martin A. Dietrich?

NBT Bancorp reported that director Martin A. Dietrich acquired 1,050 shares of common stock. The shares were granted as equity compensation under the 2024 Omnibus Incentive Plan, rather than bought in the open market, and relate to his annual retainer.

Was the NBTB insider transaction a market purchase or a stock grant?

The NBTB insider transaction was a stock grant, not a market purchase. Dietrich received 1,050 shares at $0.00 per share as a grant under the 2024 Omnibus Incentive Plan, tied to his outside director annual retainer.

How many NBT Bancorp (NBTB) shares does Martin A. Dietrich hold after this grant?

After the grant, Martin A. Dietrich directly holds 112,294 shares of NBT Bancorp common stock. This total includes the newly awarded 1,050-share grant received as part of his annual outside director retainer in restricted stock units.

What plan governs the latest NBTB stock grant to director Martin A. Dietrich?

The grant is governed by the NBT Bancorp Inc. 2024 Omnibus Incentive Plan. Under this plan, each outside director receives an annual retainer paid in restricted stock units of common stock, which are designed to align director compensation with shareholder interests.

When do the restricted stock units granted to NBTB director Dietrich vest?

The restricted stock units granted to director Martin A. Dietrich vest in one year. These units are part of his annual retainer for board service and convert into common stock upon vesting, subject to the plan’s terms and continued service.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/21/2026 - 12:17 PM EDT Learn about SEC filing dates

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^*

DIETRICH MARTIN A

(Last) (First) (Middle)

52 SOUTH BROAD STREET

(Street)

NORWICH NEW YORK 13815

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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

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

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

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	05/19/2026		A		1,050(1)	A	$0.0	112,294	D

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. Acquired pursuant to the NBT Bancorp Inc. 2024 Omnibus Incentive Plan. Each outside director is entitled to receive an annual retainer for Board service in the form of restricted stock units of the Company's common stock that vest in one year.

	By: Annette L. Burns, Power of Attorney For: Martin A. Dietrich	05/21/2026
	** 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.
* Form 4: SEC 1474 (03-26)