[Form 4] ACCO BRANDS Corp Insider Trading Activity

Rhea-AI Filing Summary

ACCO BRANDS Corp (ACCO) director Robert J. Keller received 3,940.8 restricted stock units (RSUs) on 09/10/2025 under the dividend equivalent provisions of his outstanding RSU awards. The RSUs are immediately vested but have been deferred under the company's Deferred Compensation Plan for Non-Employee Directors, meaning each unit represents the right to one share of common stock upon the earlier of the director's death, disability, or cessation of board service. After this transaction, the reporting person beneficially owned a total of 212,540.97 shares. The Form 4 was signed by an attorney-in-fact on 09/11/2025.

Positive

• Director increased beneficial ownership by 3,940.8 RSUs, reflecting additional alignment with shareholder interests
• RSUs are vested, removing vesting uncertainty though payout is deferred under the director deferred compensation plan
• Clear disclosure of transaction mechanics and the deferral arrangement, filed promptly (signed 09/11/2025)

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Director Keller received vested RSUs that were deferred, modestly increasing his reported beneficial ownership.

The filing documents an administrative equity accrual rather than an open-market purchase or sale. RSUs were granted via dividend equivalents and are vested but deferred under the director deferred compensation plan, which is a common practice to align director compensation with long-term shareholder interests while delaying receipt until termination events. The increase of 3,940.8 RSUs to a total reported beneficial ownership of 212,540.97 shares is informational and does not indicate trading intent or immediate share issuance.

Securities Compliance Analyst

TL;DR: Transaction appears routine and compliant; it reports dividend-equivalent RSUs that are deferred and vested.

The Form 4 lists transaction code "A" for acquisition and notes immediate vesting with deferral under the issuer's plan. The filing meets Section 16(a) disclosure requirements by reporting the change in beneficial ownership and providing the required explanatory footnotes. No exercised options, open-market trades, or cashless transactions are indicated.

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
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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^*

Keller Robert J

(Last) (First) (Middle)

C/O ACCO BRANDS CORPORATION

(Street)

LAKE ZURICH IL 60047

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ACCO BRANDS Corp [ ACCO ]

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)
09/10/2025

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

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	$0	09/10/2025		A		3,940.8(1)		(2)	(2)	Common Stock	3,940.8	$0	212,540.97	D

Explanation of Responses:

1. Represents Restricted Stock Units (RSUs) acquired pursuant to the dividend equivalent provisions of the Reporting Person's earned and outstanding RSU awards.

2. The RSUs are immediately vested, but have been deferred under the Issuer's Deferred Compensation Plan for Non-Employee Directors. Each RSU represents the right to receive one share of the Issuer's common stock upon the earlier of the date of the Reporting Person's death or disability, or cessation of service as a member of the Board of Directors.

	/s/ Kathryn D. Ingraham, Attorney-in-fact for Robert J. Keller	09/11/2025
	** 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 transaction did ACCO director Robert J. Keller report on Form 4 (ACCO)?

The report shows acquisition of 3,940.8 restricted stock units (RSUs) on 09/10/2025 under dividend equivalent provisions.

Are the RSUs vested or subject to future vesting conditions?

The RSUs are stated as immediately vested but have been deferred under the Issuer's Deferred Compensation Plan for Non-Employee Directors.

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

Following the reported transaction the reporting person beneficially owned 212,540.97 shares.

When was the Form 4 signed and by whom?

The Form 4 was signed by an attorney-in-fact, Kathryn D. Ingraham, on 09/11/2025.

What triggers payout of the deferred RSUs?

Each RSU represents the right to one share upon the earlier of the reporting person’s death, disability, or cessation of board service (as stated in the filing).