Northern Trust (NTRS) EVP Hallinan has 2,707 shares withheld for taxes on vesting

Rhea-AI Filing Summary

Northern Trust Corp Executive Vice President Aengus Hallinan reported a routine tax-related share disposition. On 2026-06-01, 2,707 shares of common stock were withheld at $166.82 per share to cover Federal, State and Medicare taxes when 6,375 previously reported stock units vested.

The remaining 3,668 shares from this vesting were delivered to Hallinan as common stock, and he directly owned 13,129 shares after the transaction. In addition, 9,461 stock units remain outstanding, payable on a 1-for-1 basis in Northern Trust common stock. The withholding is not an open-market sale but a standard tax-withholding mechanism tied to equity compensation.

Insights

Insider transactions analyst

Routine tax withholding on vested stock units, not an open-market sale.

Executive Vice President Aengus Hallinan had 2,707 Northern Trust common shares withheld at $166.82 to pay taxes on the vesting of 6,375 stock units. This matches an F-code tax-withholding disposition, which is a mechanical step in equity compensation.

Hallinan received 3,668 shares and held 13,129 shares directly after the event, along with 9,461 stock units payable 1-for-1 in shares. Because this is tax withholding rather than discretionary buying or selling, it carries limited informational value about his view of Northern Trust Corp stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Hallinan Aengus

Role Executive Vice President

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	2,707	$166.82	$452K

Holdings After Transaction: Common Stock — 13,129 shares (Direct, null)

Footnotes (1)

1. Includes 9,461 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock. Reflects 2,707 shares withheld in payment of Federal, State and Medicare taxes upon the vesting of 6,375 previously reported stock units. The remaining 3,668 shares were distributed to the reporting person as shares of common stock.

Key Figures

Tax-withheld shares: 2,707 shares Withholding price: $166.82 per share Stock units vested: 6,375 units +3 more

6 metrics

Tax-withheld shares 2,707 shares Shares withheld for Federal, State and Medicare taxes on 2026-06-01

Withholding price $166.82 per share Value used for 2,707 shares withheld for taxes

Stock units vested 6,375 units Previously reported stock units that vested and triggered tax withholding

Shares delivered 3,668 shares Common shares distributed to Hallinan after tax withholding

Direct holdings after transaction 13,129 shares Northern Trust common shares directly owned after the event

Outstanding stock units 9,461 units Units payable 1-for-1 in Northern Trust common stock

Key Terms

stock units, tax-withholding disposition, Common Stock, Executive Vice President

4 terms

stock units financial

"Includes 9,461 stock units payable automatically on a 1-for-1 basis"

Stock units are individual pieces of ownership in a company, like slices of a pie that together make up the whole business. They matter to investors because each unit represents a claim on the company’s assets, profits and sometimes voting power, and changes in the number or value of these units affect ownership percentages, potential dividends and share dilution — all of which influence an investment’s worth.

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Common Stock financial

"security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Executive Vice President financial

"officer_title": "Executive Vice President""

An executive vice president is a high-ranking leader within a company who oversees major parts of its operations or strategies. Think of them as senior managers responsible for important areas, similar to a vice principal in a school hierarchy. Their role matters to investors because they help guide the company's success and decision-making at the top level.

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Form 4 Insider Transactions: What Each Field Means →

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^*

Hallinan Aengus

(Last) (First) (Middle)

50 SOUTH LA SALLE ST

(Street)

CHICAGO ILLINOIS 60603

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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	06/01/2026		F		2,707	D	$166.82	13,129(1)(2)	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. Includes 9,461 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

2. Reflects 2,707 shares withheld in payment of Federal, State and Medicare taxes upon the vesting of 6,375 previously reported stock units. The remaining 3,668 shares were distributed to the reporting person as shares of common stock.

Remarks:

	Michael Rouvina, Attorney-in-Fact for Aengus Hallinan	06/02/2026
	** 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)

FAQ

What did Northern Trust (NTRS) executive Aengus Hallinan report in this Form 4?

Executive Vice President Aengus Hallinan reported a tax-withholding disposition of 2,707 Northern Trust common shares. The shares were withheld to cover taxes when previously granted stock units vested, a routine equity compensation event rather than an open-market sale of stock.

How many Northern Trust (NTRS) shares were withheld for taxes in Hallinan’s filing?

The filing shows 2,707 Northern Trust common shares withheld at $166.82 per share. These shares covered Federal, State and Medicare tax obligations triggered by the vesting of 6,375 previously reported stock units under Hallinan’s equity compensation.

How many Northern Trust (NTRS) shares did Hallinan receive from the vesting event?

From the vesting of 6,375 stock units, 3,668 Northern Trust common shares were distributed to Aengus Hallinan. The remaining 2,707 shares were withheld to satisfy tax liabilities, as detailed in the Form 4 footnote describing the tax-withholding disposition.

What are Hallinan’s reported Northern Trust (NTRS) share holdings after this transaction?

After the tax-withholding event, Hallinan directly held 13,129 Northern Trust common shares. The filing also notes 9,461 stock units outstanding, each payable on a 1-for-1 basis in Northern Trust common stock, representing additional potential future share delivery.

Is Hallinan’s Northern Trust (NTRS) Form 4 a sign of discretionary selling?

The Form 4 reflects tax withholding, not discretionary selling. Code F indicates 2,707 shares were withheld to pay taxes on vesting stock units, while 3,668 shares were delivered. Such tax-driven dispositions are mechanical and generally carry limited signaling value about insider sentiment.