FHN First Horizon Corporation

ITEM 7.01. Regulation FD Disclosure.

Furnished as Exhibit 99.1 is a copy of the First Horizon National Corporation (“FHN”) Financial Supplement and Investor Slide Presentation for the quarter and year ended December 31, 2016, which was released today.

The foregoing information is furnished pursuant to Item 2.02, “Results of Operations and Financial Condition,” and Item 7.01, “Regulation FD Disclosure.” The exhibit speaks as of the date thereof and FHN does not assume any obligation to update in the future the information therein.

Use of Non-GAAP Measures and Regulatory Measures that are not GAAP in the Exhibit

Certain measures are included in the exhibit that are “non-GAAP,” meaning (under U.S. financial reporting rules) they are not presented in accordance with generally accepted accounting principles (“GAAP”) in the U.S. and also are not codified in the U.S. banking regulations currently applicable to FHN. Although other entities may use calculation methods that differ from those used by FHN for non-GAAP measures, FHN’s management believes such measures are relevant to understanding the financial condition, capital position, and financial results of FHN and its business segments. Non-GAAP measures are reported to FHN’s management and directors through various internal reports.

Presentation of regulatory measures, some of which follow regulatory definitions rather than GAAP, provides a meaningful base for comparability to other financial institutions subject to the same regulations as FHN. Such measures are used by the various banking regulators in reviewing the performance, stability, and capital adequacy of financial institutions they regulate. Although not GAAP terms, these regulatory measures are not considered “non-GAAP” under U.S. financial reporting rules as long as their presentation conforms to regulatory standards. Regulatory measures used in the exhibit include: common equity tier 1 capital, generally defined as common equity less goodwill, other intangibles, and certain other required regulatory deductions; tier 1 capital, generally defined as the sum of core capital (including common equity and instruments that cannot be redeemed at the option of the holder) adjusted for certain items under risk based capital regulations; risk weighted assets (“RWA”), which is a measure of total on- and off-balance sheet assets adjusted for credit and market risk, used to determine regulatory capital ratios; and pre-provision net revenue (“PPNR”), calculated by adding the provision/(provision credit) for loan losses to income before income taxes.

The non-GAAP measures presented in the exhibit include: return on average tangible common equity (“ROTCE”); tangible common equity (“TCE”) to tangible assets (“TA”); tangible book value per common share; adjusted noninterest expense, adjusted PPNR, and adjusted pre-tax income; and earnings per share measures reported at the segment level.

Reconciliations of non-GAAP to GAAP measures and presentation of the most comparable GAAP items are presented near the end (immediately before the Glossary) of the Financial Supplement portion of the exhibit, and at the end of the Investor Slide Presentation.