Michael G. O'Grady - 01 Mar 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: 01 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 04 Mar 2026, 19:10:58 UTC
Previous filing: 19 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	04 Mar 2026	0001527742

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	NTRS	Common Stock	Tax liability		-11,129	-16%	$143.15^*	56,897	01 Mar 2026	Direct	F1, F2
holding	NTRS	Common Stock						417,676	01 Mar 2026	By Trust	F2
holding	NTRS	Common Stock						6,960	01 Mar 2026	By Trust fbo Child 1	F3
holding	NTRS	Common Stock						6,959	01 Mar 2026	By Trust fbo Child 2	F3
holding	NTRS	Common Stock						6,960	01 Mar 2026	By Trust fbo Child 3	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	Reflects 11,129 shares withheld in payment of Federal, State and Medicare taxes upon the vesting of 26,526 previously reported stock units. The remaining 15,397 shares were distributed to the reporting person as shares of common stock and transferred to the reporting person's existing trust account.
F3	The reporting person's spouse is trustee of this trust.