Thomas A. South - 01 Mar 2026 Form 4 Insider Report for NORTHERN TRUST CORP (NTRS)

Role: Executive Vice President
Signature: David A. Serna, Attorney-in-Fact for Thomas A. South
Issuer symbol: NTRS
Transactions as of: 01 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 04 Mar 2026, 19:11:15 UTC
Previous filing: 19 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
South Thomas A	Executive Vice President	50 SOUTH LA SALLE ST, CHICAGO	David A. Serna, Attorney-in-Fact for Thomas A. South	04 Mar 2026	0001751051

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	NTRS	Common Stock	Tax liability		-2,544	-2.6%	$143.15^*	96,337	01 Mar 2026	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Includes 44,130 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.
F2	Reflects 2,544 shares withheld in payment of Federal, State and Medicare taxes upon the vesting of 6,059 previously reported stock units. The remaining 3,515 shares were distributed to the reporting person as shares of common stock.