Exhibit 5.1
[LETTERHEAD OF F.N.B. CORPORATION]
August 31, 2021
FNB Financial Services, LP
103 Foulk Road, Suite 202
Wilmington, Delaware 19803
F.N.B. Corporation
12 Federal Street
One North Shore Center
Pittsburgh, Pennsylvania 15212
Ladies and Gentlemen:
I am Chief Legal Counsel and Corporate Secretary of F.N.B. Corporation, a Pennsylvania corporation (“FNB”), and in that capacity have acted as counsel to FNB and FNB Financial Services, LP (the “Company”) in connection with the preparation and filing with the Securities and Exchange Commission of a Registration Statement on Form S-3 (the “Registration Statement”) relating to the registration under the Securities Act of 1933, as amended, of the issuance and sale by the Company of up to $500,000,000 aggregate principal amount of (i) Nonnegotiable Subordinated Term Notes, Series 2021 (the “Term Notes”), (ii) Nonnegotiable Subordinated Daily Notes, Series 2021 (the “Daily Notes”) and (iii) Nonnegotiable Subordinated Special Daily Notes, Series 2021 (the “Special Daily Notes”) (the Term Notes, the Daily Notes and the Special Daily Notes are collectively referred to herein as the “Securities”) to be issued under an Indenture, dated as of August 19, 2005, by and among the Company, as Issuer, FNB, as Guarantor, and The Bank of New York Mellon (as successor to J.P. Morgan Trust Company, National Association), as Trustee (the “Trustee”) (as amended or supplemented from time to time, the “Indenture”). Pursuant to a Guaranty dated as of August 19, 2005 (the “Guaranty”), FNB has fully and unconditionally guaranteed the Company’s obligations under the Securities.
In connection with the foregoing, I have examined:
| a. | The Registration Statement and the exhibits thereto; |
| b. | The Company’s Certificate of Limited Partnership and the Partnership Agreement; |
| c. | FNB’s Articles of Incorporation and Bylaws, as amended; |
| e. | The form of General Partner Certificate setting forth the terms of the Term Notes, the Daily Notes and the Special Daily Notes; |