EXHIBIT 99.(b)

 

Certification Pursuant to Rule 30a-2(b) under the 1940 Act (17 CFR 270.30a-2(b))

 

Each of the undersigned hereby certifies that:

 

1.The Form N-CSR of Old Westbury Funds, Inc. (the “Report”) fully complies with the requirements of Section 13(a) or 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 Old Westbury Funds, Inc.

 

Date: July 2, 2026     /s/ David W. Rossmiller
       

David W. Rossmiller, President and Chief Executive Officer

(Principal Executive Officer)

 

Date: July 2, 2026     /s/ Matthew A. Rizzi
       

Matthew A. Rizzi, Treasurer

(Principal Financial Officer)