NORTHERN TRUST CORP (NTRSO) Insider Transactions

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 18,229 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

F2 Reflects 622 shares withheld in payment of Federal, State and Medicare taxes upon the vesting of 1,402 previously reported stock units. The remaining 780 shares were distributed to the reporting person as shares of common stock.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 44,130 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 On July 31, 2026, a trust in which the reporting person has a partial direct pecuniary interest distributed 8,960 shares of the Corporation's common stock to such trust's beneficiaries, of which 1,120 shares were distributed to the reporting person.

F2 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

F3 Shares are held in a trust established for the benefit of the reporting person and his children, of which the reporting person is a co-trustee and shares investment control.

F4 Shares are held in a trust established for the benefit of one of the reporting person's children, of which the reporting person is a co-trustee and shares investment control.

F5 These shares are held in a trust of which reporting person has a partial direct pecuniary interest.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 989 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 2,178.90 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

F2 The amount reported in Column 5 reflects the correction of previously reported dividend equivalent accruals. On January 1, 2026 and April 1, 2026, 1.25 shares and 1.22 shares, respectively, should have been reported instead of 2.50 shares and 2.43. The amount reported in Column 5 gives effect to those corrections.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 6,915.63 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents common stock units payable automatically on a one-for-one basis in shares of NTRS stock upon termination of service as a director.

F2 Owned by various trusts of which the children of the Reporting Person are the beneficiaries.

F3 Owned by a limited liability company, HCNI II LLC, of which trusts for the benefit of the Reporting Person and the children of the Reporting Person are members.

The Reporting Person disclaims beneficial ownership of the shares described in Footnotes 2 and 3, except to the extent of her beneficial ownership in the trusts and entity that own such shares.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Represents stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1

Reported filing row; may be amended. Do not sum filings blindly.

F1 Price reflects the weighted average sales price from $166.44 to $167.40. Information regarding the number of shares sold at each separate price will be provided by the reporting person upon request.

F2 Includes 9,461 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

F3 Price reflects the weighted average sales price from $167.48 to $168.24. Information regarding the number of shares sold at each separate price will be provided by the reporting person upon request.

References: F3, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 Price reflects the weighted average sales price from $166.44 to $167.40. Information regarding the number of shares sold at each separate price will be provided by the reporting person upon request.

F2 Includes 9,461 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

F3 Price reflects the weighted average sales price from $167.48 to $168.24. Information regarding the number of shares sold at each separate price will be provided by the reporting person upon request.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 9,461 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

F2 Reflects 2,707 shares withheld in payment of Federal, State and Medicare taxes upon the vesting of 6,375 previously reported stock units. The remaining 3,668 shares were distributed to the reporting person as shares of common stock.

References: F1, F2

Reported filing row; may be amended. Do not sum filings blindly.

F1 Includes 44,130 stock units payable automatically on a 1-for-1 basis in shares of the Corporation's common stock.

References: F1