Community Financial CFO receives equity awards

COMMUNITY FINANCIAL SYSTEM, INC.

Rhea-AI Filing Summary

COMMUNITY FINANCIAL SYSTEM, INC. Executive Vice President and Chief Financial Officer Wlos Marya Burgio received equity awards on March 17, 2026. She was granted 1,571 restricted stock units, each representing a right to receive one share of common stock, vesting in three equal annual installments beginning March 1, 2027.

She was also granted options on 6,004 shares of common stock at an exercise price of $56.64 per share, vesting ratably on March 17 of each year from 2027 through 2031 and expiring in 2036. Following these grants, she directly holds 2,266 common shares and indirectly holds 479.1318 shares through the company 401(k) plan, alongside the new RSUs and options.

Insider Trade Summary

Grant/Award: 7,575 shares

Grant/Award 4 txns

Insider Wlos Marya Burgio

Role EVP & Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	1,571	$0.00	$0.00
Grant/Award	Stock Option	6,004	$0.00	$0.00
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 1,571 contracts (Direct); Stock Option — 6,004 contracts (Direct); Common Stock — 2,266 shares (Direct); Common Stock — 479.1318 shares (Indirect, By 401(k) Plan)

Footnotes (4)

1. F1. The number of shares reported herein acquired pursuant to Community Financial System, Inc.'s 401(k) Plan and are based on a current plan statement.
2. F2. Each restricted stock unit represents a contingent right to receive one share of Community Financial System, Inc. common stock.
3. F3. The restricted stock units vest in three equal annual installments beginning March 1, 2027.
4. F4. The option vests ratably on March 17, 2027, 2028, 2029, 2030, and 2031.

FAQ

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

What equity awards did CBU EVP & CFO Wlos Marya Burgio receive?

She received 1,571 restricted stock units and stock options on 6,004 shares. The RSUs convert into common stock at vesting, while the options allow purchase at a fixed exercise price of $56.64 per share if exercised before expiration.

How do the new restricted stock units for CBU’s CFO vest?

The 1,571 restricted stock units vest in three equal annual installments starting March 1, 2027. Each vested unit delivers one share of Community Financial System, Inc. common stock, aligning part of the CFO’s compensation with long-term share performance.

What are the key terms of the CBU CFO’s new stock options?

She received options on 6,004 shares of common stock at a $56.64 exercise price. These options vest ratably on March 17 of 2027, 2028, 2029, 2030, and 2031, and expire in 2036 if not exercised, encouraging multi‑year retention.

Did the CBU CFO buy or sell any shares in this Form 4 filing?

No open‑market buys or sells were reported. The filing reflects compensation-related grants of restricted stock units and stock options, not discretionary trading. These awards increase her potential future ownership without immediate cash purchases or sales.

What are the CBU CFO’s reported common stock holdings after these grants?

After the reported transactions, she directly holds 2,266 shares of common stock. In addition, she indirectly holds 479.1318 shares through Community Financial System, Inc.’s 401(k) plan, plus the newly granted restricted stock units and stock options.

How do the 401(k) plan holdings factor into the CBU CFO’s position?

The filing shows 479.1318 common shares held indirectly through Community Financial System, Inc.’s 401(k) plan. This position is based on a current plan statement and supplements her directly held shares and newly granted equity awards.

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

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Accepted by SEC EDGAR 03/19/2026 - 03:46 PM 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^*

Wlos Marya Burgio

(Last) (First) (Middle)

C/O COMMUNITY FINANCIAL SERVICE, INC.

5790 WIDEWATERS PARKWAY

(Street)

DEWITT NEW YORK 13214

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
COMMUNITY FINANCIAL SYSTEM, INC. [ CBU ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/17/2026

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
Common Stock								2,266	D
Common Stock								479.1318(1)	I	By 401(k) Plan

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
Restricted Stock Units	(2)	03/17/2026		A		1,571		(3)	(3)	Common Stock	1,571	$0	1,571	D
Stock Option	$56.64	03/17/2026		A		6,004		(4)	03/17/2036	Common Stock	6,004	$0	6,004	D

Explanation of Responses:

1. The number of shares reported herein acquired pursuant to Community Financial System, Inc.'s 401(k) Plan and are based on a current plan statement.

2. Each restricted stock unit represents a contingent right to receive one share of Community Financial System, Inc. common stock.

3. The restricted stock units vest in three equal annual installments beginning March 1, 2027.

4. The option vests ratably on March 17, 2027, 2028, 2029, 2030, and 2031.

	/s/ Danielle M. Cima, pursuant to a Confirming Statement executed by Marya Burgio Wlos	03/19/2026
	** 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)