Company: FCNCB
Filing Date: 2025-03-06
Form Type: 424B5
Source: 0001193125-25-047965
Chunk: 0

Company: FIRST CITIZENS BANCSHARES INC /DE/
Filing Date: 2025-03-06
Form: 424B5
Chunk 0
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Filed Pursuant to Rule 424(b)(5)
Registration No. 333-281553 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell nor do they seek an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED MARCH 6, 2025 PRELIMINARY PROSPECTUS SUPPLEMENT (To Prospectus Dated August 14, 2024) First Citizens BancShares, Inc. $ % Fixed-to-FloatingRate Senior Notes due 20 $ % Fixed-to-FixedRate Subordinated Notes due 20 We are offering $ aggregate principal amount of our % fixed-to-floatingrate senior notes due , 20 (the “senior notes”) and $ aggregate principal amount of our % fixed-to-fixedrate subordinated notes due , 20 (the “subordinated notes” and, together with the senior notes, the “notes”). The senior notes will mature on , 20 (the “senior notes maturity date”). The senior notes will accrue interest from (and including) , 2025 (the “senior notes issue date”) to (but excluding) , 20 at a fixed rate of % per annum, payable semiannually in arrears on and of each year, commencing on , 2025, and ending on , 20 , and from and including , 20 to (but excluding) the senior notes maturity date at a floating rate equal to a benchmark rate based on the Compounded SOFR Index Rate, as defined and subject to the provisions described under “Description of Notes—Senior Notes—Interest” in this prospectus supplement, plus basis points per annum, payable quarterly in arrears on , , and of each year, commencing on , 20 , and ending on the senior notes maturity date. In no event will the interest payable on the senior notes be less than zero. The subordinated notes will mature on , 20 (the “subordinated notes maturity date” and, together with the senior notes maturity date, each a “maturity date”). The subordinated notes will accrue interest from (and including) , 2025 (the “subordinated notes issue date”) to (but excluding) , 20 (the “subordinated notes reset date”) at a fixed rate of % per annum, and from (and including) the subordinated notes reset