Company: FCNCB
Filing Date: 2025-03-06
Form Type: 424B5
Source: 0001193125-25-047965
Chunk: 41

Company: FIRST CITIZENS BANCSHARES INC /DE/
Filing Date: 2025-03-06
Form: 424B5
Chunk 41
---

website is not part of this prospectus supplement or the accompanying prospectus or incorporated herein or therein.

“Observation
Period” means, in respect of each floating rate interest period, the period from (and including) the day falling two U.S. Government Securities Business Days prior to the first day of the relevant floating rate interest period to (but
excluding) the day falling two U.S. Government Securities Business Days prior to the relevant senior notes floating rate interest payment date for such floating rate interest period.

“SOFR Administrator” means the NY Federal Reserve (or a successor administrator of SOFR).

“SOFR Administrator’s Website” means the website of the NY Federal Reserve, currently athttp://www.newyorkfed.org, or
any successor source. The foregoing website is an inactive textual reference only, meaning that the information contained on the website is not part of this prospectus supplement or the accompanying prospectus or incorporated herein or therein.

“SOFR Determination Time” means, with respect to any U.S. Government Securities Business Day, 3:00 p.m. (New York City time) on
such U.S. Government Securities Business Day.

“U.S. Government Securities Business Day” means any day except for a Saturday,
Sunday or a day on which the Securities Industry and Financial Markets Association recommends that the fixed income departments of its members be closed for the entire day for purposes of trading in U.S. government securities.

Notwithstanding clauses (1) and (2) of the definition of “SOFR” above, if we or our designee (in consultation with us)
determine on or prior to the relevant Interest Determination Date that a Benchmark Transition Event and related Benchmark Replacement Date have occurred with respect to SOFR, then the “Benchmark Transition Provisions” set forth below will
thereafter apply to all determinations of the rate of interest payable on the senior notes during the senior notes floating rate period.

In accordance with and subject to the “Benchmark Transition Provisions” set forth below, after a Benchmark Transition Event and
related Benchmark Replacement Date have occurred, the amount of interest that will be payable for each interest period on the senior notes during the senior notes floating rate period will be determined by reference to a rate per annum equal to the
Benchmark Replacement plus the Spread.

SOFR Index Unavailability

If SOFR IndexStart or SOFR IndexEnd is not published on the relevant Interest Determination Date and a Benchmark Transition Event and its
related Benchmark Replacement Date have not occurred with respect to SO