Certification Pursuant to Section 906 of the Sarbanes-Oxley Act
 
I, Kevin P. O’Rourke, President/Principal Executive Officer of Northern Funds (the “Registrant”), certify that:  
 
1. The Registrant’s periodic report on Form N-CSR for the period ended June 30, 2026 (the “Report”) fully complies with the requirements of Section 15(d) of the Securities Exchange Act of 1934, as amended; and
 
2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.
 
 
Date:      September 3, 2026                                                              By: /s/Kevin P. O’Rourke
Kevin P. O’Rourke, President
(Principal Executive Officer)
 
This certification is being furnished to the Securities and Exchange Commission pursuant to Rule 30a-2(b) under the Investment Company Act of 1940, as amended, and 18 U.S.C. Section 1350 and is not being filed as part of the Report with the Commission.
 
Certification Pursuant to Section 906 of the Sarbanes-Oxley Act
 
I, Randal E. Rein, Treasurer/Principal Financial and Accounting Officer of Northern Funds (the “Registrant”), certify that: 
 
1. The Registrant’s periodic report on Form N-CSR for the period ended June 30, 2026 (the “Report”) fully complies with the requirements of Section 15(d) of the Securities Exchange Act of 1934, as amended; and
 
2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.
 
 
Date:      September 3, 2026                                                              By: /s/Randal E. Rein
Randal E. Rein, Treasurer
(Principal Financial and Accounting Officer) 
 
This certification is being furnished to the Securities and Exchange Commission pursuant to Rule 30a-2(b) under the Investment Company Act of 1940, as amended, and 18 U.S.C. Section 1350 and is not being filed as part of the Report with the Commission.