Michael G. O'Grady - 29 Jan 2026 Form 4 Insider Report for NORTHERN TRUST CORP (NTRS)

Role: Chairman and CEO, Director
Signature: David A. Serna, Attorney-In-Fact for Michael G. O'Grady
Issuer symbol: NTRS
Transactions as of: 29 Jan 2026
Net transactions value: -$1,268,822
Form type: 4
Filing time: 02 Feb 2026, 17:52:55 UTC
Previous filing: 02 Feb 2026
Next filing: 09 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
O'Grady Michael	Chairman and CEO, Director	50 SOUTH LA SALLE ST, CHICAGO	David A. Serna, Attorney-In-Fact for Michael G. O'Grady	02 Feb 2026	0001527742

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	NTRS	Common Stock	Options Exercise	$2,008,984	+34,489	+9.9%	$58.25	383,557	29 Jan 2026	By Trust
transaction	NTRS	Common Stock	Tax liability	$3,277,806	-21,739	-5.7%	$150.78	361,818	29 Jan 2026	By Trust
holding	NTRS	Common Stock						63,986	29 Jan 2026	Direct	F1
holding	NTRS	Common Stock						6,960	29 Jan 2026	By Trust fbo Child 1	F2
holding	NTRS	Common Stock						6,959	29 Jan 2026	By Trust fbo Child 2	F2
holding	NTRS	Common Stock						6,960	29 Jan 2026	By Trust fbo Child 3	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	NTRS	Employee Stock Option (right-to-buy)	Options Exercise	$0	-34,489	-100%	$0.000000	0	29 Jan 2026	Common Stock	34,489	$58.25	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.
F2	The reporting person's spouse is trustee of this trust.
F3	This option becomes exercisable in four equal annual installments beginning 2/16/2017.