[Form 4] NORTHERN TRUST CORP Insider Trading Activity

Rhea-AI Filing Summary

Marcy S. Klevorn, a Director of Northern Trust Corp (NTRS), reported a purchase of 63.37 shares of the company's common stock on 10/01/2025. The transaction lists a price of $131.2 per share and shows 12,358.15 shares beneficially owned following the reported transaction. The filing notes that the reported balance represents stock units payable on a 1-for-1 basis in common stock. The Form 4 was signed by an attorney-in-fact on 10/02/2025.

Positive

• Director acquisition of 63.37 shares indicates insider buying activity
• Post-transaction holdings of 12,358.15 shares show continued direct ownership

Negative

• None.

Insights

Corporate Governance Analyst

Director purchased a small block of stock, increasing direct holdings to 12,358.15 units.

This Form 4 shows Marcy S. Klevorn acquired 63.37 shares on 10/01/2025 at a price of $131.2. The filing indicates the post-transaction holding is 12,358.15 shares, described as stock units payable 1-for-1 into common stock.

The transaction is recorded as a direct holding and was executed by an attorney-in-fact, with the Form 4 signed on 10/02/2025. This disclosure is routine for insiders converting or acquiring units and is material only as a transparency item under Section 16 reporting requirements.

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

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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).

1. Name and Address of Reporting Person^*

Klevorn Marcy S

(Last) (First) (Middle)

50 SOUTH LA SALLE ST

(Street)

CHICAGO IL 60603

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
NORTHERN TRUST CORP [ NTRS ]

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)
10/01/2025

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
Common Stock	10/01/2025		A		63.37	A	$131.2	12,358.15(1)	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. Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

Remarks:

	David A. Serna, Attorney-in-Fact for Marcy S. Klevorn	10/02/2025
	** 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 Marcy S. Klevorn report on Form 4 for NTRS?

The Form 4 reports an acquisition of 63.37 shares of Northern Trust common stock on 10/01/2025 at a reported price of $131.2 per share.

How many shares does Marcy S. Klevorn beneficially own after the transaction?

The filing shows 12,358.15 shares beneficially owned following the reported transaction.

What type of ownership is reported for Klevorn's holdings?

The Form 4 lists the ownership form as Direct (D) and notes the balance represents stock units payable 1-for-1 into common stock.

When was the Form 4 signed and by whom?

The Form 4 was signed by David A. Serna, Attorney-in-Fact for Marcy S. Klevorn on 10/02/2025.

What is the reporter's relationship to Northern Trust?

Marcy S. Klevorn is reported as a Director of Northern Trust Corp.