Director at Northern Trust (NTRS) awarded 65 stock units in grant

Rhea-AI Filing Summary

NORTHERN TRUST CORP director Martin P. Slark received an equity award of common stock units. On April 1, 2026, he acquired 65.17 stock units of Northern Trust common stock at $141.41 per unit as a grant or award.

According to the filing, these units are payable automatically on a 1-for-1 basis in shares of Northern Trust common stock. After this award, Slark directly holds 21,311.58 shares of common stock and indirectly holds 4,769 shares through a trust.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider SLARK MARTIN P

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	65.17	$141.41	$9K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 21,311.58 shares (Direct); Common Stock — 4,769 shares (Indirect, By Trust)

Footnotes (1)

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Key Figures

Stock units granted: 65.17 units Grant price per unit: $141.41 per unit Direct holdings after grant: 21,311.58 shares +1 more

4 metrics

Stock units granted 65.17 units Grant to director on April 1, 2026

Grant price per unit $141.41 per unit Value assigned to the April 1, 2026 stock unit award

Direct holdings after grant 21,311.58 shares Common stock directly owned by Martin P. Slark after transaction

Indirect holdings via trust 4,769 shares Common stock indirectly owned through a trust after transaction

Key Terms

stock units, 1-for-1 basis, indirect ownership, By Trust, +1 more

5 terms

stock units financial

"Represents 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.

1-for-1 basis financial

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

indirect ownership financial

"total_shares_following_transaction ... direct_or_indirect: "I""

By Trust financial

"nature_of_ownership: "By Trust""

grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

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^*

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)
04/01/2026

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	04/01/2026		A		65.17	A	$141.41	21,311.58(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	04/02/2026
	** 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 insider transaction did Northern Trust (NTRS) director Martin P. Slark report?

Martin P. Slark reported receiving an equity award of 65.17 stock units of Northern Trust common stock. The grant occurred on April 1, 2026, and is classified as a grant, award, or other acquisition transaction rather than an open-market purchase or sale.

At what price were Martin P. Slark’s Northern Trust (NTRS) stock units granted?

The 65.17 stock units granted to Martin P. Slark were valued at $141.41 per unit. This price represents the fair value used for the grant and helps indicate the approximate dollar size of the director’s latest equity-based compensation award from Northern Trust.

How many Northern Trust (NTRS) shares does Martin P. Slark hold after this Form 4 transaction?

After the April 1, 2026 award, Martin P. Slark directly holds 21,311.58 shares of Northern Trust common stock. He also has an additional 4,769 shares reported as indirectly owned through a trust, reflecting both his direct and trust-held positions in the company.

What are the stock units reported by Northern Trust (NTRS) director Martin P. Slark?

The filing states that the reported stock units are payable automatically on a 1-for-1 basis in shares of Northern Trust’s common stock. This means each unit ultimately converts into one share, making these units a form of deferred equity-based compensation for the director.

Does the Northern Trust (NTRS) Form 4 show any stock sales by Martin P. Slark?

The Form 4 reports an acquisition coded as a grant, award, or other acquisition, and does not list any open-market sales. The transaction direction is classified as an acquisition, and the filing does not include a sale transaction code for this reporting period.