[Form 4] NORTHERN TRUST CORP Insider Trading Activity

Rhea-AI Filing Summary

NORTHERN TRUST CORP director Martin P. Slark reported a compensation-related stock award. On 2026-07-01, he received 61.6 shares of common stock, recorded as a grant or award acquisition, at a reference price of $175.60 per share. A footnote explains these are stock units payable on a 1-for-1 basis in common stock.

After this award, Slark directly owns 22,397.07 shares of Northern Trust common stock and indirectly holds 4,769 shares through a trust. The filing reflects routine equity compensation rather than an open-market purchase or sale.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider SLARK MARTIN P

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	61.6	$175.60	$11K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 22,397.07 shares (Direct, null); Common Stock — 4,769 shares (Indirect, By Trust)

Footnotes (1)

1. [object Object]

Key Figures

Stock award size: 61.6 shares Award price per share: $175.60 per share Direct holdings after award: 22,397.07 shares +3 more

6 metrics

Stock award size 61.6 shares Grant or award acquisition on 2026-07-01

Award price per share $175.60 per share Reference price for stock award on 2026-07-01

Direct holdings after award 22,397.07 shares Common stock directly owned after 2026-07-01 transactions

Indirect holdings by trust 4,769 shares Common stock held indirectly by trust as of 2026-07-01

Acquire transactions count 1 transaction Grant/award acquisition included in Form 4 summary

Holding entries 1 entry Separate holding record for trust-owned shares

Key Terms

stock units, grant/award acquisition, indirect ownership, By Trust

4 terms

stock units financial

"Represents stock units payable automatically on a 1-for-1 basis in shares"

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.

grant/award acquisition financial

"transaction_action": "grant/award acquisition""

indirect ownership financial

""ownership_type": "indirect""

By Trust financial

""nature_of_ownership": "By Trust""

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/02/2026 - 05:50 PM Accepted by SEC EDGAR 07/02/2026 - 05:50 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^*

SLARK MARTIN P

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

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	07/01/2026		A		61.6	A	$175.6	22,397.07(1)	D
Common Stock								4,769	I	By Trust

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 Martin P. Slark	07/02/2026
	** 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)