Company: FCNCB
Filing Date: 2025-03-06
Form Type: 424B5
Source: 0001193125-25-047965
Chunk: 60

Company: FIRST CITIZENS BANCSHARES INC /DE/
Filing Date: 2025-03-06
Form: 424B5
Chunk 60
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ounded SOFR Index Rate as the Benchmark for the senior notes floating rate period and under the “Benchmark Transition Provisions” set forth above. Any determination, decision, or election that may be made by us or by our designee under the terms of the senior notes, including any determination with respect to a tenor, rate, or adjustment or of the occurrence or non-occurrenceof an event, circumstance, or date and any decision to take or refrain from taking any action or any selection:

| • |     | will be conclusive and binding on the holders of the senior notes and the Trustee absent manifest error; |

| • |     | if made by us, will be made in our sole discretion; |

| • |     | if made by our designee, will be made after consultation with us, and our designee will not make any such 
 determination, decision, or election to which we reasonably object; and                                   |

| • |     | notwithstanding anything to the contrary in the Senior Indenture, shall become effective without consent from the 
 holders of the senior notes or the Trustee.                                                                       |

Calculation Agent Initially we have appointed U.S. Bank Trust Company, National Association as the calculation agent for the senior notes. We or an affiliate of ours may assume the duties of the calculation agent. S-37

Paying Agent

We may appoint one or more financial institutions to act as our paying agents, at whose designated offices the senior notes in non-global form may be surrendered for payment at their maturity. We call each of those offices a paying agent. We may add, replace, or terminate paying agents from time to time. We may also choose to act as our own
paying agent. Initially, we have appointed the Trustee, at its principal corporate trust office at U.S. Bank Trust Company, National Association, 214 North Tryon Street, 27th Floor, Charlotte, NC 28202, as the paying agent for the senior notes.

Governing Law

The Senior Indenture
provides that the senior notes will be governed by, and construed in accordance with, the laws of the State of New York.

Clearance and Settlement

The senior notes will be represented by one or more global certificates, which we refer to individually as a “Global senior
note” and collectively as the “Global senior notes,” deposited with or on behalf of DTC and registered in the name of Cede & Co. or another nominee of DTC. The senior notes will be available