# EDGAR Filing Document

**Accession Number:** 0001475841
**File Stem:** 0001104659-26-012945
**Filing Date:** 2026-2
**Character Count:** 342384
**Document Hash:** 0fa2c3a572d9fbe99df0e59fbd298245
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-012945.hdr.sgml**: 20260211

**ACCESSION NUMBER**: 0001104659-26-012945

**CONFORMED SUBMISSION TYPE**: 424B5

**PUBLIC DOCUMENT COUNT**: 14

**FILED AS OF DATE**: 20260211

**DATE AS OF CHANGE**: 20260211

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** National Bank Holdings Corp
- **CENTRAL INDEX KEY:** 0001475841
- **STANDARD INDUSTRIAL CLASSIFICATION:** NATIONAL COMMERCIAL BANKS [6021]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 270563799
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 424B5
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-293219
- **FILM NUMBER:** 26618255

**BUSINESS ADDRESS:**
- **STREET 1:** 7800 EAST ORCHARD ROAD
- **STREET 2:** SUITE 300
- **CITY:** GREENWOOD VILLAGE
- **STATE:** CO
- **ZIP:** 80111
- **BUSINESS PHONE:** 303-892-8715

**MAIL ADDRESS:**
- **STREET 1:** 7800 EAST ORCHARD ROAD
- **STREET 2:** SUITE 300
- **CITY:** GREENWOOD VILLAGE
- **STATE:** CO
- **ZIP:** 80111

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NBH Holdings Corp.
- **DATE OF NAME CHANGE:** 20091030

[**TABLE OF CONTENTS**](#TOC)

#### Filed Pursuant to Rule 424(b)(5)

#### Registration No. 333-293219

#### PROSPECTUS SUPPLEMENT (To Prospectus dated February 5, 2026)

### $150,000,000
![[MISSING IMAGE: lg_nationalbankholdings-4c.jpg]](lg_nationalbankholdings-4c.jpg)

### 5.875% Fixed-to-Floating Rate Subordinated Notes due 2036
We are offering $150,000,000 aggregate principal amount of 5.875% fixed-to-floating rate subordinated notes due 2036 (the "Notes") pursuant to this prospectus supplement and the accompanying prospectus. The Notes will be offered in minimum denominations of $1,000 and integral multiples of $1,000 in excess thereof. The Notes will mature on February 15, 2036 (the "Maturity Date"). From and including the date of original issuance to, but excluding, February 15, 2031 or the date of earlier redemption (the "fixed rate period"), the Notes will bear interest at an initial rate of 5.875% per annum, payable semi-annually in arrears on February 15 and August 15 of each year, commencing on August 15, 2026. The last interest payment date for the fixed rate period will be February 15, 2031. From and including February 15, 2031 to, but excluding, the Maturity Date or the date of earlier redemption (the "floating rate period"), the Notes will bear interest at a floating rate per annum equal to the Benchmark rate based on Three-Month Term SOFR, each as defined and subject to the provisions described under "Description of the Notes — General" in this prospectus supplement, plus 241 basis points, payable quarterly in arrears on February 15, May 15, August 15 and November 15 of each year, commencing on May 15, 2031. Notwithstanding the foregoing, if the Benchmark rate is less than zero, the Benchmark rate will be deemed to be zero.

We may, at our option, beginning with the interest payment date of February 15, 2031 and on any interest payment date thereafter, redeem the Notes, in whole or in part. In addition, we may, at our option, redeem the Notes at any time prior to maturity, including prior to February 15, 2031, in whole but not in part, upon or after the occurrence of a "Tier 2 Capital Event" or a "Tax Event" (each as defined under "Description of the Notes" in this prospectus supplement) or our being required to register as an investment company under the Investment Company Act of 1940, as amended (the "1940 Act"). The Notes will not otherwise be redeemable by us prior to maturity, unless certain events occur, as described under "Description of the Notes — Redemption" in this prospectus supplement. The redemption price for any redemption is 100% of the principal amount of the Notes being redeemed, plus accrued and unpaid interest thereon to, but excluding, the date of redemption. Any redemption of the Notes will be subject to the receipt of the approval of the Board of Governors of the Federal Reserve System (the "Federal Reserve") to the extent then required under applicable laws or regulations, including capital regulations.

The Notes will be unsecured subordinated obligations, will rank *pari passu*, or equally, with all of our existing and future unsecured subordinated debt, will be senior to all of our existing and future junior subordinated debt and will be junior to all of our existing and future senior debt. The Notes will be structurally subordinated to all existing and future liabilities of our subsidiaries and will be effectively subordinated to our existing and future secured indebtedness, to the extent of the value of the collateral securing such indebtedness. There will be no sinking fund for the Notes. The Notes will be obligations of National Bank Holdings Corporation ("NBHC" or the "Company") only and will not be obligations of, and will not be guaranteed by, any of NBHC's subsidiaries. For a more detailed description of the Notes, see "Description of the Notes."

Prior to this offering, there has been no public market for the Notes. The Notes will not be listed on any securities exchange or included in any automated quotation system.

 **The Notes are not deposits and are not insured by the Federal Deposit Insurance Corporation (the "FDIC") or any other governmental agency. The Notes are ineligible as collateral for a loan or extension of credit from NBHC or any of its subsidiaries. None of the U.S. Securities and Exchange Commission (the "SEC"), the FDIC, the Federal Reserve, the Colorado Division of Banking or any other bank regulatory agency or any state securities commission has approved or disapproved of the Notes or passed upon the adequacy or accuracy of this prospectus supplement or the accompanying prospectus. Any representation to the contrary is a criminal offense.** 

 **Investing in the Notes involves risks. See "Risk Factors" beginning on page [S-12](#sRIFA) of this prospectus supplement and those risk factors in the documents incorporated by reference in this prospectus supplement and the accompanying prospectus.** 

---

| | | |
|:---|:---|:---|
| | **Per Note**  | **Total**  |
| Public offering price<sup>(1)</sup>  | 100.00% | $150000000 |
| Underwriting discount<sup>(2)</sup>  | 1.25% | $1875000 |
| Proceeds, before expenses, to us  | 98.75% | $148125000 |

---

(1) Plus accrued interest, if any, from the original issue date.

(2) See "Underwriting" in this prospectus supplement for details regarding the underwriter's compensation.

The underwriter expects to deliver the Notes to purchasers in book-entry form through the facilities of The Depository Trust Company, against payment on or about February 11, 2026. See "Underwriting" in this prospectus supplement for details.

![[MISSING IMAGE: lg_pipersandler-4c.jpg]](lg_pipersandler-4c.jpg)

#### The date of this prospectus supplement is February 9, 2026.

------

[**TABLE OF CONTENTS**](#TOC)

#### **TABLE OF CONTENTS**

#### PROSPECTUS SUPPLEMENT

---

| | |
|:---|:---|
| | **Page**  |
| [ABOUT THIS PROSPECTUS SUPPLEMENT](#sATPS)  | [S-1](#sATPS) |
| [WHERE YOU CAN FIND MORE INFORMATION](#sWYCF)  | [S-2](#sWYCF) |
| [INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE](#sIOCD)  | [S-3](#sIOCD) |
| [CAUTIONARY NOTE CONCERNING FORWARD-LOOKING STATEMENTS](#sCNCF)  | [S-4](#sCNCF) |
| [PROSPECTUS SUPPLEMENT SUMMARY](#sPSS)  | [S-6](#sPSS) |
| [THE OFFERING](#sTHOF)  | [S-8](#sTHOF) |
| [RISK FACTORS](#sRIFA)  | [S-12](#sRIFA) |
| [USE OF PROCEEDS](#sUOP)  | [S-21](#sUOP) |
| [CAPITALIZATION](#sCAP)  | [S-22](#sCAP) |
| [DESCRIPTION OF THE NOTES](#sDOTN)  | [S-23](#sDOTN) |
| [CERTAIN ERISA CONSIDERATIONS](#sCEC)  | [S-38](#sCEC) |
| [MATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS](#sMUFI)  | [S-40](#sMUFI) |
| [UNDERWRITING](#sUND)  | [S-44](#sUND) |
| [LEGAL MATTERS](#sLEMA)  | [S-46](#sLEMA) |
| [EXPERTS](#sEXP)  | [S-46](#sEXP) |

---

#### PROSPECTUS

---

| | |
|:---|:---|
| | **Page**  |
|  [IMPORTANT NOTICE ABOUT INFORMATION PRESENTED IN THIS PROSPECTUS AND <br> THE ACCOMPANYING PROSPECTUS SUPPLEMENT](#tINAI)  | [i](#tINAI) |
| [ABOUT THIS PROSPECTUS](#tATP)  | [1](#tATP) |
| [WHERE YOU CAN FIND MORE INFORMATION](#tWYCF)  | [2](#tWYCF) |
| [CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS](#tCNRF)  | [4](#tCNRF) |
| [PROSPECTUS SUMMARY](#tPRSU)  | [6](#tPRSU) |
| [RISK FACTORS](#tRIFA)  | [8](#tRIFA) |
| [NATIONAL BANK HOLDINGS CORPORATION](#tNBHC)  | [9](#tNBHC) |
| [USE OF PROCEEDS](#tUOP)  | [10](#tUOP) |
| [DESCRIPTION OF DEBT SECURITIES](#tDODS)  | [11](#tDODS) |
| [DESCRIPTION OF COMMON STOCK AND PREFERRED STOCK](#tDOCS)  | [21](#tDOCS) |
| [DESCRIPTION OF DEPOSITARY SHARES](#tDODS1)  | [24](#tDODS1) |
| [DESCRIPTION OF PURCHASE CONTRACTS](#tDOPC)  | [27](#tDOPC) |
| [DESCRIPTION OF WARRANTS](#tDOW)  | [28](#tDOW) |
| [DESCRIPTION OF RIGHTS](#tDOR)  | [30](#tDOR) |
| [DESCRIPTION OF UNITS](#tDOU)  | [32](#tDOU) |
| [DESCRIPTION OF GLOBAL SECURITIES](#tDOGS)  | [33](#tDOGS) |
| [SELLING STOCKHOLDERS](#tSEST)  | [35](#tSEST) |
| [PLAN OF DISTRIBUTION](#tPOD)  | [36](#tPOD) |
| [LEGAL MATTERS](#tLEMA)  | [39](#tLEMA) |
| [EXPERTS](#tEXP)  | [39](#tEXP) |

---

S-i

------

[**TABLE OF CONTENTS**](#TOC)

#### ABOUT THIS PROSPECTUS SUPPLEMENT
Unless the context indicates otherwise, the terms "NBHC," the "Company," "we," "our" and "us" in this prospectus supplement and the accompanying prospectus refer to National Bank Holdings Corporation and its subsidiaries.

References to the "Banks" refer to NBH Bank, a bank chartered under the laws of the State of Colorado and a wholly owned bank subsidiary of NBHC, and Bank of Jackson Hole Trust, a bank chartered under the laws of the state of Wyoming and a wholly owned bank subsidiary of NBHC. References to a particular year mean our fiscal year commencing on January 1 and ending on December 31 of that year.

This prospectus supplement and the accompanying prospectus are part of a shelf registration statement on Form S-3 that we filed with the SEC. The registration statement incorporates by reference important business and financial information about us that is not included in or delivered with this document. This information, other than exhibits to documents that are not specifically incorporated by reference into this prospectus supplement or the accompanying prospectus, is available to you via the SEC's website at www.sec.gov or without charge upon written or oral request to NBHC at the address or telephone number indicated in the section entitled "Incorporation of Certain Documents by Reference" in this prospectus supplement.

This document contains two parts. The first part is this prospectus supplement, which contains specific information about us and the terms on which we are selling the Notes and adds to and updates information contained in the accompanying prospectus and the documents incorporated by reference herein. The second part is the accompanying prospectus dated February 5, 2026, which contains and incorporates by reference a more general description of the securities we may offer from time to time, some of which does not apply to the Notes we are offering, and important business and financial information about us. If information contained in this prospectus supplement differs or varies from the information contained in the accompanying prospectus, you should rely on the information set forth in this prospectus supplement. If information contained in any document having a later date than this prospectus supplement (for example, a document incorporated by reference in the accompanying prospectus) differs or varies from the information contained in this prospectus supplement or the accompanying prospectus, the statement in the document having the later date modifies or supersedes the earlier statement.

Neither we nor the underwriter have authorized anyone to provide you with any information other than that contained or incorporated by reference in this prospectus supplement, the accompanying prospectus and any "free writing prospectus" prepared by or on behalf of us or to which we may have referred you. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We are not, and the underwriter is not, making an offer to sell the Notes in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus supplement, the accompanying prospectus, any free writing prospectus relating to this prospectus supplement provided or approved by us and the documents incorporated by reference in either this prospectus supplement or the accompanying prospectus is accurate only as of the respective dates of those documents. Our business, financial condition, results of operations and prospects may have changed since those dates.

Before you invest in the Notes, you should carefully read the registration statement (including the exhibits thereto) of which this prospectus supplement and the accompanying prospectus form a part, this prospectus supplement, the accompanying prospectus and the documents incorporated by reference into this prospectus supplement and the accompanying prospectus. The documents incorporated by reference into this prospectus supplement are described under "Incorporation of Certain Documents by Reference."

------

[**TABLE OF CONTENTS**](#TOC)

#### WHERE YOU CAN FIND MORE INFORMATION
We file annual, quarterly and current reports, proxy statements and other information with the SEC. Our reports filed electronically with the SEC are available to the public over the Internet at the SEC's website at *www.sec.gov*.

We also maintain an Internet site where you can find additional information about us, including our SEC filings. The address of our Internet site is *https://nationalbankholdings.com*. All Internet addresses provided in this prospectus supplement or in the accompanying prospectus are for informational purposes only and are not intended to be hyperlinks. In addition, the information on our Internet website, or any other Internet site described in this prospectus supplement or in the accompanying prospectus, is not a part of, and is not incorporated or deemed to be incorporated by reference in, this prospectus supplement or in the accompanying prospectus or other offering materials.

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#### INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
The SEC allows us to "incorporate by reference" much of the information that we file with it, which means that we can disclose important information to you by referring you to those publicly available documents. The information that we incorporate by reference is an important part of this prospectus supplement and the accompanying prospectus. Any statement contained in a document incorporated or deemed to be incorporated by reference into this prospectus supplement or the accompanying prospectus will be deemed to be modified or superseded for purposes of this prospectus supplement or the accompanying prospectus to the extent that a statement contained in this prospectus supplement or the accompanying prospectus or any other subsequently filed document that is deemed to be incorporated by reference into this prospectus supplement or the accompanying prospectus modifies or supersedes the statement. In other words, in the case of a conflict or inconsistency between information contained in this prospectus supplement and the accompanying prospectus and information incorporated by reference into this prospectus, you should rely on the information contained in the document that was filed later. Any statement so modified or superseded will not be deemed, except as so modified or superseded, to constitute a part of this prospectus supplement or the accompanying prospectus.

This prospectus supplement and the accompanying prospectus incorporate by reference the documents listed below and all documents that we subsequently file with the SEC pursuant to Section 13(a), 13(c), 14, or 15(d) of the Exchange Act, prior to the termination of the offering of the Notes described in this prospectus supplement; *provided*, *however*, that we are not incorporating by reference any documents, portions of documents or other information deemed to have been "furnished" and not "filed" with the SEC:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • [Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed on February 25, 2025;](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000155837025001502/nbhc-20241231x10k.htm)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Quarterly Reports on Form 10-Q for quarters ended March 31, 2025, filed on [April 30, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000022/nbhc-20250331x10q.htm), June 30, 2025, filed on [August 5, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000044/nbhc-20250630x10q.htm), and September 30, 2025, filed on [October 29, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000063/nbhc-20250930x10q.htm);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Current Reports on Form 8-K, filed on [January 22, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000003/nbhc-20250122x8k.htm), [April 22, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000015/nbhc-20250422x8k.htm), [April 30, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000020/nbhc-20250430x8k.htm), [May 5, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000028/nbhc-20250430x8k.htm), [July 21, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000035/nbhc-20250721x8k.htm), [July 22, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000038/nbhc-20250722x8k.htm), [August 4, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000041/nbhc-20250804x8k.htm), [September 18, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000110465925091291/tm2526246d1_8k.htm), [October 21, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000054/nbhc-20251021x8k.htm), [October 29, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000061/nbhc-20251029x8k.htm), [December 23, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000070/nbhc-20251223x8k.htm), [January 7, 2026](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000110465926001549/tm261761d2_8k.htm), [January 27, 2026](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584126000003/nbhc-20260127x8k.htm) and [February 5, 2026](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000110465926010572/tm264842d1_8k.htm) (other than the portions of those documents deemed furnished and not filed); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • The [Definitive Proxy Statement on Schedule 14A filed with the SEC on March 28, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000155837025003999/nbhc-20250430xdef14a.htm).

Upon request, we will provide to each person, including any beneficial owner, to whom a copy of this prospectus supplement is delivered, a copy of any or all of the information that has been incorporated by reference in this prospectus supplement but not delivered with this prospectus supplement (other than the exhibits to such documents which are not specifically incorporated by reference therein). We will provide this information at no cost to the requester upon written or oral request to National Bank Holdings Corporation, 7800 East Orchard Road, Suite 300, Greenwood Village, Colorado 80111, Attention: Investor Relations, Telephone: (720) 554-6640.

You should rely only on the information incorporated by reference or set forth in this prospectus supplement and the accompanying prospectus or in any free writing prospectus prepared by or on behalf of us or to which we have referred you. Neither we nor any underwriter, dealer or agent have authorized anyone else to provide you with additional or different information.

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[**TABLE OF CONTENTS**](#TOC)

#### CAUTIONARY NOTE CONCERNING FORWARD-LOOKING STATEMENTS
This prospectus supplement, the accompanying prospectus and the documents incorporated by reference or deemed incorporated by reference into this prospectus supplement or the accompanying prospectus and any other written or oral statements made by us from time to time may contain forward-looking statements within the meaning of the federal securities laws. These statements do not discuss historical facts but instead relate to expectations, beliefs, plans, predictions, forecasts, objectives, assumptions or future events or performance. Forward-looking statements are generally identified by words such as "anticipate," "believe," "can," "would," "should," "could," "may," "predict," "seek," "potential," "will," "estimate," "target," "plan," "project," "continuing," "ongoing," "expect," "intend," "goal," "focus," "maintains," "future," "ultimately," "likely," "anticipate," "ensure," "strategy," "objective," and similar words or phrases. These statements are only predictions and involve estimates, known and unknown risks, assumptions and uncertainties. We have based these statements largely on our current expectations and projections about future events and financial trends that we believe may affect our financial condition, liquidity, results of operations, business strategy and growth prospects. Forward-looking statements involve certain important risks, uncertainties and other factors, any of which could cause actual results to differ materially from those in such statements and, therefore, you are cautioned not to place undue reliance on such statements.

Factors that could cause actual results to differ from those discussed in the forward-looking statements include, but are not limited to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • business and economic conditions along with external events, both generally and in the financial services industry;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • susceptibility to credit risk and fluctuations in the value of real estate and other collateral securing a significant portion of our loan portfolio, including with regards to real estate acquired through foreclosure, and the accuracy of appraisals related to such real estate;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes impacting monetary supply and the businesses of our clients and counterparties, including levels of market interest rates, inflation, currency values, monetary, fiscal, and international trade policy, and the volatility of trading markets;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to maintain sufficient liquidity to meet the requirements of deposit withdrawals and other business needs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our desire to raise additional capital in connection with strategic growth initiatives and our ability to access the capital markets when desired or on favorable terms;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes in the fair value of our investment securities can fluctuate due to market conditions outside of our control;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our investments in financial technology companies and initiatives may subject us to material financial, reputational and strategic risks;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the allowance for credit losses and fair value adjustments may be insufficient to absorb losses in our loan portfolio;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any service interruptions, cyber incidents or other breaches relating to our technology systems, security systems or infrastructure or those of our third-party providers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the occurrence of fraud or other financial crimes within our business;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • competition from other financial services providers, including traditional financial institutions and financial technology companies, and the effects of disintermediation within the banking business including consolidation within the industry;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes to federal government lending programs like the Small Business Administration's Preferred Lender Program and the Federal Housing Administration's insurance programs, including the impact of changes in regulations, budget appropriations and a prolonged government shutdown on such programs;

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[**TABLE OF CONTENTS**](#TOC)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • impairment of our mortgage servicing rights, disruption in the secondary market for mortgage loans, declines in real estate values, or being required to repurchase mortgage loans or reimburse investors;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • claims and litigation related to our fiduciary responsibilities in connection with our trust and wealth business;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to manage and execute our organic growth and acquisition strategies, including our ability to realize the expected benefits of our acquisition strategies;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • developments in technology, such as artificial intelligence, the success of our digital growth strategy, and our ability to incorporate innovative technologies in our business and provide products and services that satisfy our clients' expectations for convenience and security;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to integrate Vista Bank into our business may be more difficult, costly or time consuming than expected and we may fail to realize the anticipated benefits or cost savings of the merger;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • failure to obtain regulatory approvals or consummate attractive acquisitions or continue to increase organic loan growth would restrict our growth plans;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the accuracy of projected operating results for assets and businesses we acquire as well as our ability to drive organic loan growth to replace loans in our existing portfolio with comparable loans as loans are paid down;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to comply with and manage costs related to extensive and potentially expanding government regulation and supervision, including current and future regulations affecting bank holding companies and depository institutions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to execute our capital allocation strategy, including paying dividends or repurchasing shares, is subject to regulatory limitations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the application of any increased assessment rates imposed by the Federal Deposit Insurance Corporation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • claims or legal action brought against us by third parties or government agencies;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the loss of our executive officers and key personnel;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes to federal, state and local laws and regulations along with executive orders applicable to our business, including tax laws; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • other factors, risks, trends and uncertainties described elsewhere in our other filings with the SEC.

These and other factors are more fully described under "Risk Factors" below and in Item 1A of our most recent Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed with the SEC on February 25, 2025, and other factors discussed in the filings we make with the SEC under the Exchange Act.

All forward-looking statements attributable to the Company are expressly qualified in their entirety by these cautionary statements. Forward-looking statements speak only as of the date on which such statements are made. Except as required by law, we disclaim any obligation to update these forward-looking statements, whether as a result of new information, future events or otherwise. There is no assurance that future results, levels of activity, performance or goals will be achieved.

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[**TABLE OF CONTENTS**](#TOC)

#### PROSPECTUS SUPPLEMENT SUMMARY
 *This summary highlights selected information from this prospectus supplement and does not contain all of the information that you should consider in making your investment decision. You should read this summary together with the more detailed information appearing elsewhere in this prospectus supplement, as well as the information in the accompanying prospectus and in the documents incorporated by reference or deemed incorporated by reference into this prospectus supplement and the accompanying prospectus. You should carefully consider, among other things, the matters discussed in the section titled "Risk Factors" in this prospectus supplement, in our most recent [Annual Report on Form 10-K for the year ended December 31, 2024](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000155837025001502/nbhc-20241231x10k.htm), in our Quarterly Reports on Form 10-Q for the quarters ended [March 31, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000022/nbhc-20250331x10q.htm), [June 30, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000044/nbhc-20250630x10q.htm), and [September 30, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000063/nbhc-20250930x10q.htm) and in other documents that we subsequently file with the SEC. In addition, certain statements include forward-looking information that involves risks and uncertainties. See "Cautionary Note Concerning Forward-Looking Statements" in this prospectus supplement.* 

#### Overview
NBHC is a registered bank holding company that has elected financial holding company status and was incorporated in the State of Delaware in 2009. NBHC is headquartered in Greenwood Village, Colorado, and its primary operations are conducted through its wholly owned subsidiaries, NBH Bank and Bank of Jackson Hole Trust. NBHC, through its subsidiaries, provides a variety of banking products and services to both commercial and consumer clients through a network of over 90 banking centers, as of December 31, 2025, located primarily in Colorado, the greater Kansas City region, Utah, Wyoming, Texas, New Mexico and Idaho, as well as through online and mobile banking products and services. As of December 31, 2025, NBHC had $9.9 billion in assets, $7.4 billion in loans, $8.3 billion in deposits, $1.4 billion in shareholders' equity and $1.3 billion in assets under management in its trust and wealth management business.

NBHC's common stock is traded on the NYSE under the symbol "NBHC."

#### Corporate Information
NBHC's principal executive office is located at 7800 East Orchard Road, Suite 300, in Greenwood Village, Colorado, and its telephone number is (303) 892-8715. We maintain a website at *https:// nationalbankholdings.com*. The information on our website is not part of this prospectus supplement or the accompanying prospectus and is not incorporated by reference herein or therein.

#### Recent Developments
 *Acquisition of Vista Bank* 

Effective January 7, 2026, NBHC, completed its previously announced acquisition of Vista Bancshares, Inc., a Texas corporation ("Vista"), pursuant to the Agreement and Plan of Merger, dated as of September 15, 2025 (the "Merger Agreement"), by and among NBHC, Vista and Bryan Wick, solely in his capacity as the shareholders' representative. Pursuant to the Merger Agreement, on January 7, 2026, (i) Vista merged with and into NBHC, with NBHC continuing as the surviving corporation (the "Merger"), and (ii) immediately following the Merger, Vista Bank, a bank chartered under the laws of the State of Texas and a wholly owned subsidiary of Vista ("Vista Bank"), merged with and into NBH Bank, with NBH Bank continuing as the surviving bank.

In accordance with the Merger Agreement, at the effective time of the merger on January 7, 2026, each share of common stock, par value $1.00 per share, of Vista was converted into the right to receive 3.1161 shares of Class A common stock, par value $0.01 per share, of NBHC, $31.62 in cash and cash in lieu of fractional shares of NBHC, if any, subject to certain adjustments to the cash portion of the merger consideration in accordance with the Merger Agreement.

 *Preliminary Results As of and for the Three and Twelve Months Ended December 31, 2025* 

On January 27, 2026, NBHC announced its earnings for the period ended December 31, 2025, including the information below.

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For the year ended December 31, 2025, net income totaled $109.6 million, compared to $118.8 million in the prior year. Adjusting for after-tax acquisition-related expenses of $5.4 million and a loss on security sales of $2.6 million, net income totaled $117.6 million.

For the three months ended December 31, 2025, net income totaled $16.0 million, compared to $35.3 million during the prior quarter. Adjusting for after-tax acquisition-related expenses of $4.1 million and a loss on security sales of $2.6 million, net income totaled $22.7 million for the three months ended December 31, 2025.

We had total assets of $9.9 billion at December 31, 2025, compared with $9.8 billion at December 31, 2024 and $10.2 billion at September 30, 2025. Total shareholders' equity was $1.4 billion at December 31, 2025, $1.3 billion at December 31, 2024 and $1.4 billion at September 30, 2025.

As a result of credit actions taken during the three months ended December 31, 2025, we recorded provision expense of $9.1 million. This quarter's provision expense was driven by specific reserves and net charge-offs related to three credits.

The foregoing is only a summary and is not intended to be a comprehensive statement of our unaudited financial results. Financial statements as of and for the period ended December 31, 2025 will be included in NBHC's Annual Report on Form 10-K to be filed with the SEC.

The preliminary financial data included in this prospectus supplement has been prepared by, and is the responsibility of, NBHC's management. KPMG LLP has not audited, reviewed, compiled, or applied agreed-upon procedures with respect to the preliminary financial data. Accordingly, KPMG LLP does not express an opinion or any other form of assurance with respect thereto.

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#### THE OFFERING
The following summary highlights selected information from this prospectus supplement and the accompanying prospectus about the Notes and this offering. This description is not complete and does not contain all of the information that you should consider before investing in the Notes. You should read this prospectus supplement and the accompanying prospectus, as well as the documents incorporated by reference herein and therein, carefully before making a decision about whether to invest in the Notes. For a more complete understanding of the Notes, you should read the section of this prospectus supplement entitled "Description of the Notes."

Issuer

National Bank Holdings Corporation, a Delaware corporation and a bank holding company.

Notes Offered

5.875% Fixed-to-Floating Rate Subordinated Notes due 2036

Aggregate Principal Amount

$150,000,000

Issue Price

100.00%

Maturity Date

The Notes will mature on February 15, 2036.

Interest

*Fixed rate period*: A fixed rate per annum of 5.875%.

*Floating rate period*: A floating per annum rate equal to the Benchmark rate based on Three-Month Term SOFR plus 241 basis points for each quarterly interest period during the floating rate period; *provided*, *however*, that if the Benchmark rate is less than zero, the Benchmark rate will be deemed to be zero.

For each interest period during the floating rate period, "Three-Month Term SOFR" means the rate for Term SOFR for a tenor of three months that is published by the Term SOFR Administrator at the Reference Time for any interest period, as determined by the calculation agent after giving effect to the Three-Month Term SOFR Conventions (each as defined under "Description of the Notes").

If the calculation agent determines on or prior to the relevant Reference Time that a Benchmark Transition Event and its related Benchmark Replacement Date (each as defined under "Description of the Notes") have occurred with respect to Three-Month Term SOFR, then the provisions under "Description of the Notes — Effect of Benchmark Transition Event," which are referred to herein as the "benchmark transition provisions," will thereafter apply to all determinations of the interest rate on the Notes for each interest period during the floating rate period. In accordance with the benchmark transition provisions, after a Benchmark Transition Event and its related Benchmark Replacement Date have occurred, the interest rate on the Notes for each interest period during the floating rate period will be an annual rate equal to the Benchmark Replacement (as defined under "Description of the Notes") plus 241 basis points.

We will appoint a calculation agent for the Notes (which may be us or an affiliate) prior to the commencement of the floating rate period. We will act as the initial calculation agent.

Interest Payment Dates

*Fixed rate period*: February 15 and August 15 of each year, commencing on August 15, 2026. The last interest payment date for the fixed rate period will be February 15, 2031.

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*Floating rate period*: February 15, May 15, August 15 and November 15 of each year, commencing on May 15, 2031.

Record Dates

Interest on each Note will be payable to the person in whose name such Note is registered on the 15th day (whether or not a Business Day) immediately preceding the applicable interest payment date.

Day Count Convention

 *Fixed rate period: 360-day year consisting of twelve 30-day months.* 

*Floating rate period*: 360-day year and the actual number of days elapsed.

No Guarantee

The Notes will not be guaranteed by any of our subsidiaries. As a result, the Notes will be structurally subordinated to the liabilities of our subsidiaries as discussed below under "Description of the Notes — Subordination" and "Risk Factors — The Notes will be unsecured and subordinated to any existing and future Senior Debt."

Ranking; Subordination

The Notes offered by this prospectus supplement will be issued by us under a Subordinated Debt Securities Indenture between NBHC and U.S. Bank Trust Company, National Association, as trustee (the "Trustee"), to be dated as of the issue date (the "Base Indenture"), as supplemented by a First Supplemental Indenture between NBHC and the Trustee, to be dated as of the issue date (the "First Supplemental Indenture"). We refer to the Base Indenture, as supplemented by the First Supplemental Indenture, as the "Indenture." The Notes will be our unsecured, subordinated obligations and:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • will rank junior in right of payment and upon our liquidation to any of our existing and all future Senior Debt (as defined under "Description of the Notes — Subordination"), all as described under "Description of the Notes";

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • will rank equal in right of payment and upon our liquidation with any of our existing and all of our future indebtedness the terms of which provide that such indebtedness ranks equally with the Notes, including our 3.00% and 3.75% fixed-to-floating rate subordinated notes; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • will be (i) effectively subordinated to our secured indebtedness to the extent of the value of the collateral securing such indebtedness, and (ii) structurally subordinated to any existing and future liabilities and obligations of our subsidiaries, including the deposit liabilities and claims of other creditors of the Banks.

As of September 30, 2025, on a consolidated basis, our outstanding debt and deposits totaled approximately $8.5 billion, which includes approximately $8.5 billion of deposit liabilities that would rank senior to the Notes. In addition, as of September 30, 2025, we (at the holding company level) had no indebtedness that would rank senior to the Notes, $54.7 million of indebtedness that would rank *pari passu* to the Notes, and no indebtedness that would rank junior to the Notes. The Indenture will not limit the amount of additional indebtedness we or our subsidiaries may incur.

Form and Denomination

The Notes will be offered in book-entry form only through the facilities of The Depository Trust Company (with its successors,

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"DTC") in minimum denominations of $1,000 and integral multiples of $1,000 in excess thereof.

Optional Redemption

We may, at our option, beginning with the interest payment date of February 15, 2031, and on any interest payment date thereafter, redeem the Notes, in whole or in part, from time to time, subject to obtaining the prior approval of the Federal Reserve to the extent such approval is then required under the rules of the Federal Reserve, at a redemption price equal to 100% of the principal amount of the Notes being redeemed plus any accrued and unpaid interest, if any, to, but excluding, the date of redemption.

Special Redemption

We may also redeem the Notes at any time prior to their maturity, including prior to February 15, 2031, in whole, but not in part, subject to obtaining the prior approval of the Federal Reserve to the extent such approval is then required under the rules of the Federal Reserve, upon or after the occurrence of (1) a Tax Event (as defined in the Indenture); (2) a Tier 2 Capital Event (as defined in the Indenture); or (3) our being required to register as an investment company under the Investment Company Act of 1940, as amended. In each case, the redemption would be at a redemption price equal to 100% of the principal amount of the Notes plus any accrued and unpaid interest to, but excluding, the redemption date. For more information, see "Description of the Notes — Redemption."

Sinking Fund

There will be no sinking fund for the Notes.

Future Issuances

The Notes will initially be limited to an aggregate principal amount of $150,000,000. We may from time to time, without notice to or consent of the holders, increase the aggregate principal amount of the Notes outstanding by issuing additional notes in the future with the same terms as the Notes, except for the issue date, the offering price and the first interest payment date, and such additional notes may be consolidated with the Notes issued in this offering and form a single series.

Use of Proceeds

We estimate that the net proceeds from this offering will be approximately $147.3 million, after deducting the underwriting discount and our estimated offering expenses. We intend to use the net proceeds from this offering for general corporate purposes. See "Use of Proceeds."

Listing

The Notes will not be listed on any securities exchange or quoted on any quotation system. Currently, there is no market for the Notes, and there is no assurance that any public market for the Notes will develop.

ERISA Considerations

For a discussion of certain prohibited transactions and fiduciary duty issues pertaining to purchases by or on behalf of an employee benefit plan, see "Certain ERISA Considerations."

Material U.S. Federal Income Tax Considerations

For a discussion of material U.S. federal income tax considerations of purchasing, owning and disposing of the Notes, see "Material U.S. Federal Income Tax Considerations."

Governing Law

The Notes and the Indenture will be governed by the laws of the State of New York.

Trustee

U.S. Bank Trust Company, National Association.

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Global Note; Book-Entry

System

The Notes offered hereby will be evidenced by a global note deposited with the trustee for the Notes, as custodian for DTC. Beneficial interests in the global note will be shown on, and transfers of those beneficial interests can only be made through, records maintained by DTC and its participants. See "Description of the Notes — Form, Denomination, Transfer, Exchange and Book-Entry Procedures."

Risk Factors

Investing in the Notes involves risks. Potential investors are urged to read and consider the risk factors relating to an investment in the Notes set forth under "Risk Factors" beginning on page [S-12](#sRIFA) of this prospectus supplement, as well as the risk factors and other information included or incorporated by reference in this prospectus supplement and the accompanying prospectus, including those under Item 1A, "Risk Factors" in our [Annual Report on Form 10-K for the year ended December 31, 2024](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000155837025001502/nbhc-20241231x10k.htm) as supplemented by our Quarterly Report on Form 10-Q for the quarters ended [March 31, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000022/nbhc-20250331x10q.htm), [June 30, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000044/nbhc-20250630x10q.htm), and [September 30, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000063/nbhc-20250930x10q.htm), and our Current Reports on Form 8-K, for a discussion of factors that you should carefully consider before deciding whether to invest in the Notes.

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#### RISK FACTORS
 *An investment in our securities is subject to risks inherent to our business. Before making an investment decision, you should carefully consider the risks and uncertainties described below together with the risk factors and other information included in our [Annual Report on Form 10-K for the year ended December 31, 2024](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000155837025001502/nbhc-20241231x10k.htm), as supplemented by our Current Reports on Form 8-K, our Quarterly Reports on Form 10-Q for the quarters ended [March 31, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000022/nbhc-20250331x10q.htm), [June 30, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000044/nbhc-20250630x10q.htm), and [September 30, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000063/nbhc-20250930x10q.htm), and in other documents that we subsequently file with the SEC, all of which are incorporated by reference into this prospectus supplement and the accompanying prospectus. Additional risks and uncertainties that management is not aware of or that management currently deems immaterial may also impair our business operations. See also the discussion under the heading "Cautionary Note Concerning Forward-Looking Statements." This prospectus supplement and the accompanying prospectus are qualified in their entirety by these risk factors. If any of these risks actually occurs, our financial condition and results of operations could be materially and adversely affected. If this were to happen, the value of our securities could decline significantly, and you could lose all or part of your investment.* 

#### Risk Factors Related to the Notes

#### The Notes will be unsecured and subordinated to any existing and future Senior Debt.
The Notes will be subordinated obligations of NBHC. Accordingly, the Notes will be junior in right of payment to any existing and all future Senior Debt, and in certain events of insolvency, to other financial obligations as described under "Description of the Notes." Our Senior Debt includes all of NBHC's indebtedness, except indebtedness of NBHC that is expressly subordinated to or ranked *pari passu* with the Notes, subject to certain exceptions. The Notes will rank equally with all other unsecured subordinated indebtedness of NBHC issued in the future under the Indenture. In addition, the Notes will be structurally subordinated to all existing and future indebtedness, liabilities and other obligations, including deposits of our subsidiaries, including the Banks. As of September 30, 2025, on a consolidated basis, our outstanding debt and deposits totaled approximately $8.5 billion, which includes approximately $8.5 billion of deposit liabilities that would rank senior to the Notes. In addition, as of September 30, 2025, we (at the holding company level) had no indebtedness that would rank senior to the Notes, $54.7 million of indebtedness that would rank *pari passu* to the Notes, and no indebtedness that would rank junior to the Notes.

In addition, the Notes will not be secured by any of our assets. As a result, the Notes will be effectively subordinated to all of our secured indebtedness to the extent of the value of the assets securing such indebtedness. The Indenture governing the Notes does not limit the amount of Senior Debt and other financial obligations or secured obligations that we or our subsidiaries may incur.

As a result of the subordination provisions described above, holders of the Notes may not be fully repaid in the event of our bankruptcy, liquidation or reorganization.

 **The Notes will not be insured or guaranteed by the FDIC, any other governmental agency or any of our subsidiaries. The Notes will be structurally subordinated to the indebtedness and other liabilities of our subsidiaries, which means that creditors of our subsidiaries generally will be paid from those subsidiaries' assets before holders of the Notes would have any claims to those assets.** 

The Notes are not savings accounts, deposits or other obligations of the Banks or any of our non-bank subsidiaries and are not insured or guaranteed by the FDIC or any other governmental agency or public or private insurer. The Notes are obligations of NBHC only and are neither obligations of, nor guaranteed by, any of our subsidiaries. The Notes will be structurally subordinated to all existing and future indebtedness and other liabilities of our subsidiaries, which means that creditors of our subsidiaries (including, in the case of the Banks, their depositors) generally will be paid from those subsidiaries' assets before holders of the Notes would have any claims to those assets. Even if we become a creditor of any of our subsidiaries, our rights as a creditor would be subordinate to any security interest in the assets of that subsidiary and any debt of that subsidiary senior to that held by us, and our rights could otherwise be subordinated to the rights of other creditors and depositors of that subsidiary. Furthermore, none of our subsidiaries is under any obligation to make payments to us, and any payments to us depend on the earnings or financial condition of our subsidiaries and various business considerations. Statutory, contractual or other restrictions also limit

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our subsidiaries' ability to pay dividends or make distributions, loans or advances to us. For these reasons, we may not have access to any assets or cash flows of our subsidiaries to make interest and principal payments on the Notes.

 **The Indenture governing the Notes does not contain any limitations on our ability to incur additional indebtedness, grant or incur a lien on our assets, sell or otherwise dispose of assets, pay dividends or repurchase our capital stock.** 

Neither we nor any of our subsidiaries are restricted from incurring additional indebtedness or other liabilities, including additional senior or subordinated indebtedness, under the Indenture governing the terms of the Notes. If we incur additional indebtedness or liabilities, our ability to pay our obligations on the Notes could be adversely affected. We expect that we will from time to time incur additional indebtedness and other liabilities. In addition, we are not restricted under the Indenture governing the Notes from granting or incurring a lien on any of our assets, selling or otherwise disposing of any of our assets, paying dividends or issuing or repurchasing our securities including our regular quarterly dividend and share repurchases pursuant to our previously announced share repurchase program.

In addition, there are no financial covenants in the Indenture governing the Notes. Except as expressly provided in the Indenture, you are not protected under the Indenture governing the Notes in the event of a highly leveraged transaction, reorganization, default under our existing indebtedness, restructuring, merger or similar transaction that may adversely affect you. See "Description of the Notes — Consolidation, Merger, Sale of Assets and Other Transactions."

#### Payments on the Notes will depend on receipt of dividends and distributions from our subsidiaries.
We are a bank holding company and we conduct substantially all of our operations through subsidiaries, including the Banks. We depend on dividends, distributions and other payments from our subsidiaries to meet our obligations, including to fund payments on the Notes.

Federal and state banking regulations limit dividends from our bank subsidiaries to us. Generally, banks are prohibited from paying dividends when doing so would cause them to fall below regulatory minimum capital levels. Additionally, limits exist on banks paying dividends in excess of net income for specified periods. The total amount available for payment of dividends by the Banks was approximately $382.7 million at September 30, 2025, based on the Banks' net income for the nine months ended September 30, 2025 and the two prior years. If this amount had been fully distributed as of September 30, 2025, the Banks would have maintained enough capital to be considered well-capitalized at that date. During the nine months ended September 30, 2025 and the years ended December 31, 2024 and 2023, the Banks together paid dividends of $25.0 million, $75.0 million and $62.0 million, respectively, to us. In addition, federal bank regulatory agencies have the authority to prohibit the Banks from engaging in unsafe or unsound practices in conducting its business. The payment of dividends or other transfers of funds to us, depending on the financial condition of the Banks, could be deemed an unsafe or unsound practice.

Dividend payments from a Bank would also be prohibited under the "prompt corrective action" regulations of federal bank regulators if the Bank is, or after payment of such dividends would be, undercapitalized under such regulations. In addition, the Banks are subject to restrictions under federal law that limit their ability to transfer funds or other items of value to us and our non-bank subsidiaries, including affiliates, whether in the form of loans and other extensions of credit, investments and asset purchases, or as other transactions involving the transfer of value. Unless an exemption applies, these transactions by the Banks with us are limited to 10% of each Bank's capital stock and surplus and, with respect to all such transactions with affiliates in the aggregate, to 20% of each Bank's capital stock and surplus. Moreover, loans and extensions of credit by either Bank to its affiliates, including us, generally are required to be secured in specified amounts. A bank's transactions with its non-bank affiliates also are required generally to be on arm's-length terms.

Accordingly, we can provide no assurance that we will receive dividends or other distributions from our bank subsidiary and our other subsidiaries in an amount sufficient to pay interest on or principal of the Notes.

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#### Our indebtedness could adversely affect our financial results and prevent us from fulfilling our obligations under the Notes.
In addition to our currently outstanding indebtedness and any additional indebtedness we may incur pursuant to this offering, we may be able to borrow substantial additional indebtedness, including Senior Debt, in the future. If new indebtedness is incurred in addition to our current debt levels, the related risks that we now face could increase.

Our indebtedness, including the indebtedness we may incur in the future, could have important consequences for the holders of the Notes, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • limiting our ability to satisfy our obligations with respect to the Notes;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • increasing our vulnerability to general adverse economic and industry conditions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • limiting our ability to obtain additional financing to fund future working capital, capital expenditures, and other general corporate requirements;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • requiring a substantial portion of our cash flow from operations for the payment of principal of, and interest on, our indebtedness and thereby reducing our ability to use our cash flow to fund working capital, capital expenditures, and general corporate requirements;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • limiting our flexibility in planning for, or reacting to, changes in our business and the industry; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • putting us at a disadvantage compared to competitors with less indebtedness.

The Indenture does not limit the incurrence of additional indebtedness by us, including secured indebtedness, which would be effectively senior to the Notes to the extent of the value of the collateral securing such indebtedness.

#### We may not be able to generate sufficient cash to service all of our debt, including the Notes.
Our ability to make scheduled payments of principal and interest, or to satisfy our obligations in respect of our debt or to refinance our debt, will depend on the future performance of our operating subsidiaries. Prevailing economic conditions (including interest rates), regulatory constraints, including, without limitation, limiting distributions to us from the Banks and required capital levels with respect to the Banks and financial, business and other factors, many of which are beyond our control, will also affect our ability to meet these needs. Our subsidiaries may not be able to generate sufficient cash flows from operations, or we may be unable to obtain future borrowings in an amount sufficient to enable us to pay our debt, or to fund our other liquidity needs. We may need to refinance all or a portion of our debt at or before maturity. We may not be able to refinance any of our debt when needed (including, without limitation, upon commencement of the floating rate period) on commercially reasonable terms or at all.

#### Regulatory guidelines may restrict our ability to pay the principal of, and accrued and unpaid interest on, the Notes.
As a bank holding company, our ability to pay the principal of, and interest on, the Notes is subject to the rules and guidelines of the Federal Reserve regarding capital adequacy. We intend to treat the Notes as "Tier 2 capital" under these rules and guidelines. The Federal Reserve guidelines generally require us to review the effects of the cash payment on Tier 2 capital instruments, such as the Notes, on our overall financial condition. The guidelines also require that we review our net income for the current and past four quarters, and the amounts we have paid on Tier 2 capital instruments for those periods, as well as our projected rate of earnings retention. Moreover, pursuant to federal law and Federal Reserve regulations, as a bank holding company, we are required to act as a source of financial and managerial strength to each Bank and commit resources to its support, including, without limitation, the guarantee of its capital plans if it is undercapitalized. Such support may be required at times when we may not otherwise be inclined or able to provide it. As a result of the foregoing, we may be unable to pay accrued interest on the Notes on one or more of the scheduled interest payment dates, or at any other time, or the principal of the Notes at the maturity of the Notes.

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If we were to be the subject of a bankruptcy proceeding under Chapter 11 of the U.S. Bankruptcy Code, then the bankruptcy trustee would be deemed to have assumed, and would be required to cure immediately, any deficit under any commitment we have to any of the federal banking agencies to maintain the capital of the Banks, and any other insured depository institution for which we have such a responsibility, and any claim for breach of such obligation would generally have priority over most other unsecured claims.

#### Holders of the Notes will have limited rights, including limited rights of acceleration, if there is an event of default.
Payment of principal on the Notes may be accelerated only in the case of certain events of bankruptcy or insolvency involving us or a Bank. There is no automatic acceleration, or right of acceleration, in the case of default in the payment of principal of or interest on the Notes, or in the performance of any of our other obligations under the Notes or the Indenture governing the Notes. Our regulators can, if we or a Bank become subject to an enforcement action, prohibit the Bank from paying dividends to us, and prevent our payment of interest on or principal of the Notes and any dividends on our capital stock, but such limits will not permit acceleration of the Notes. See "Description of the Notes — Events of Default."

#### An active trading market for the Notes may not develop.
The Notes constitute a new issue of securities for which there is no existing trading market. We do not intend to apply for listing of the Notes on any securities exchange or for quotation of the Notes in any automated dealer quotation system. We cannot provide you with any assurance regarding whether a trading market for the Notes will develop, the ability of holders of the Notes to sell their Notes or the prices at which holders may be able to sell their Notes. The underwriter has advised us that it intends to make a secondary market in the Notes. The underwriter, however, is not obligated to do so, and any market-making with respect to the Notes may be discontinued at any time without notice. There may be a limited number of buyers if you decide to sell your Notes. This may affect the price you receive for your Notes or your ability to sell your Notes at all. Investors in the Notes may not be able to sell the Notes at all or may not be able to sell the Notes at prices that will provide them with a yield comparable to similar investments that have a developed secondary market, and may consequently suffer from increased pricing volatility and market risk.

 **If a trading market for the Notes develops, changes in the debt markets, among others, could adversely affect your ability to liquidate your investment in the Notes and the market price of the Notes.** 

Many factors could affect the trading market for, and the trading value of, the Notes. These factors include: the method of calculating the principal, premium, if any, interest or other amounts payable, if any, on the Notes; the time remaining to the maturity of the Notes; the ranking of the Notes; the redemption features of the Notes; the outstanding amount of subordinated notes with terms similar or identical to the Notes offered hereby; the prevailing interest rates being paid by other companies similar to us; changes in U.S. interest rates; whether the ratings on the Notes or us provided by any rating agency have changed; our financial condition, financial performance and future prospects; the level, direction and volatility of market interest rates generally; general economic conditions of the capital markets in the United States; and geopolitical conditions and other financial, political, regulatory, and judicial events that affect the capital markets generally. The condition of the financial markets and prevailing interest rates have fluctuated significantly in the past and are likely to fluctuate in the future. Such fluctuations could adversely affect the trading market (if any) for, and the market price of, the Notes.

 **Because the Notes may be redeemed at our option under certain circumstances prior to their maturity, if we elect to redeem all or any portion of the Notes, you may be subject to reinvestment risk.** 

On or after February 15, 2031, we may, at our option, redeem the Notes in whole or in part on each interest payment date. In addition, we may also redeem the Notes prior to maturity, at our option, in whole but not in part, upon or after the occurrence of (i) a Tier 2 Capital Event, (ii) a Tax Event or (iii) our being required to register as an investment company under the Investment Company Act of 1940, as amended. The redemption price for any redemption is 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest thereon, if any, to, but excluding, the date of redemption. Any

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redemption of the Notes will be subject to the receipt of the approval of the Federal Reserve, to the extent then required under applicable laws or regulations, including capital regulations. Any such redemption may have the effect of reducing the income or return that you may receive on an investment in the Notes by reducing the term of the investment. Under current regulatory capital guidelines, the aggregate principal amount of the Notes that will count as Tier 2 capital will be reduced by 20% in each of the last five years prior to the Maturity Date of the Notes. As a result, we may be more likely to redeem the Notes prior to their Maturity Date. If this occurs, you may not be able to reinvest the proceeds at an interest rate comparable to the rate paid on the Notes. See "Description of the Notes — Redemption."

We may elect to redeem the Notes on or after the date on which they become redeemable at our option; however, investors should not expect us to make such election on such date when the Notes are first redeemable or at any time thereafter. Under Federal Reserve regulations, unless the Federal Reserve authorizes us in writing to do otherwise, we may not redeem the Notes unless they are replaced with other Tier 2 capital instruments or unless we can demonstrate to the satisfaction of the Federal Reserve that, following redemption, we will continue to hold capital commensurate with our risk.

#### The amount of interest payable on the Notes will vary after February 15, 2031.
During the fixed rate period, the Notes will bear interest at an initial rate of 5.875% per annum. Thereafter, the Notes will bear interest at a floating rate per annum equal to the Benchmark rate (which is expected to be Three-Month Term SOFR) plus 241 basis points, subject to the provisions under "Description of the Notes — Interest." The per annum interest rate that is determined at the reference time for each interest period will apply to the entire quarterly interest period following such determination date even if the Benchmark rate increases during that period.

Floating rate notes bear additional significant risks not associated with fixed rate debt securities. These risks include fluctuation of the interest rates and the possibility that you will receive an amount of interest that is lower than expected. We have no control over a number of matters, including, without limitation, economic, financial, and political events, that are important in determining the existence, magnitude, and longevity of market volatility and other risks and their impact on the value of, or payments made on, the Notes. In recent years, interest rates have been volatile, and that volatility may be expected in the future.

#### Our published credit ratings may not reflect all risks of an investment in the Notes.
The published credit ratings of us or our indebtedness are an assessment by rating agencies of our ability to pay our debts when due. These ratings are not recommendations to purchase, hold or sell the Notes, inasmuch as the ratings do not comment as to market price or suitability for a particular investor, are limited in scope, and do not address all material risks relating to an investment in the Notes, but rather reflect only the view of each rating agency at the time the rating is issued. The published credit ratings assigned to the Notes may not reflect the potential impact of all risks related to structure and other factors on any trading market for, or trading value of, the Notes.

Accordingly, you should consult your own financial and legal advisors as to the risks entailed by an investment in the Notes and the suitability of investing in the Notes in light of your particular circumstances.

 **A downgrade of our credit ratings or the ratings of our subsidiaries or other financial institutions could have a material adverse impact on us and the value of and market for the Notes.** 

Rating agencies continuously evaluate us and our subsidiaries, and their ratings of our long-term and short-term debt are based on a number of factors, including financial strength, as well as factors not entirely within our control, such as conditions affecting the financial services industry generally. In light of these reviews and the continued focus on the financial services industry generally, we and our subsidiaries may not be able to maintain our current credit ratings. Ratings downgrades by a rating agency could have a significant and immediate impact on our funding and liquidity through cash obligations, reduced funding capacity and collateral triggers. A reduction in our or our subsidiaries' credit ratings could also increase our borrowing costs and limit access to the capital markets. These changes could have a material adverse impact on the value of and market for the Notes.

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Downgrades in the credit or financial strength ratings assigned to the counterparties with whom we transact could create the perception that our financial condition will be adversely impacted as a result of potential future defaults by such counterparties. Additionally, we could be adversely affected by a general, negative perception of financial institutions caused by the downgrade of other financial institutions. Accordingly, ratings downgrades for other financial institutions could affect the market price of our stock and could limit our access to or increase our cost of capital. These changes could have a material adverse impact on the value of and market for the Notes.

#### Investors should not rely on indicative or historical data concerning SOFR or Three-Month Term SOFR.
The interest rate during the floating rate period will be determined using Three-Month Term SOFR (unless a Benchmark Transition Event and its related Benchmark Replacement Date occur with respect to Three-Month Term SOFR, in which case the rate of interest will be based on the next-available Benchmark Replacement, which is Compounded SOFR (as described under "Description of the Notes")). In the following discussion of SOFR, when we refer to the Notes, we mean the Notes at any time during the floating rate period when the interest rate on the Notes is or will be determined based on SOFR, including Three-Month Term SOFR.

SOFR is published by the Federal Reserve Bank of New York ("FRBNY") and is intended to be a broad measure of the cost of borrowing cash overnight collateralized by U.S. Treasury securities. FRBNY reports that SOFR includes all trades in the Broad General Collateral Rate, plus bilateral U.S. Treasury repurchase agreement ("repo") transactions cleared through the delivery-versus-payment service offered by the Fixed Income Clearing Corporation (the "FICC"), a subsidiary of DTC. SOFR is filtered by FRBNY to remove a portion of the foregoing transactions considered to be "specials." According to FRBNY, "specials" are repos for specific-issue collateral that take place at cash-lending rates below those for general collateral repos because cash providers are willing to accept a lesser return on their cash to obtain a particular security.

FRBNY reports that SOFR is calculated as a volume-weighted median of transaction-level tri-party repo data collected from The Bank of New York Mellon, which currently acts as the clearing bank for the tri-party repo market, as well as General Collateral Finance Repo transaction data and data on bilateral U.S. Treasury repo transactions cleared through the FICC's delivery-versus-payment service. FRBNY states that it obtains information from DTCC Solutions LLC, an affiliate of DTC.

FRBNY currently publishes SOFR daily on its website at https://www.newyorkfed.org/markets/reference-rates/sofr. FRBNY states on its publication page for SOFR that use of SOFR is subject to important disclaimers, limitations and indemnification obligations, including that FRBNY may alter the methods of calculation, publication schedule, rate revision practices or availability of SOFR at any time without notice. The foregoing Internet 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 by reference herein or therein.

In 2021, the Alternative Reference Rates Committee (the "ARRC") convened by the Federal Reserve and FRBNY formally recommended the use of the CME Group's computation of forward-looking SOFR term rates, which are calculated by the CME Group based on SOFR futures. It is currently anticipated that Three-Month Term SOFR, for purposes of the Notes, will be based on the CME Group's forward-looking SOFR term rates with a tenor of three months.

FRBNY started publishing SOFR in 2018. FRBNY has also started publishing historical indicative SOFRs dating back to 2014, although such historical indicative data inherently involves assumptions, estimates and approximations. Similarly, certain historical Three-Month Term SOFR data is available from the CME Group. Investors should not rely on any such historical data, indicative or otherwise, or on any historical changes or trends in SOFR Three-Month Term SOFR as an indicator of the future performance of SOFR or Three-Month Term SOFR.

#### Term SOFR and SOFR may be more volatile than other benchmark or market rates.
Since the initial publication of SOFR, daily changes in the rate have, on occasion, been more volatile than daily changes in comparable benchmark or market rates, and Term SOFR and SOFR over time may

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bear little or no relation to the historical actual or historical indicative data. In addition, the return on and value of the Notes may fluctuate more than floating rate securities that are linked to less volatile rates.

#### Changes in Term SOFR and SOFR could adversely affect holders of the Notes and the trading prices for the Notes.
Because Term SOFR and SOFR are based on data received from other sources, we have no control over its determination, calculation or publication. There is no assurance that either Term SOFR or SOFR will not be discontinued or fundamentally altered in a manner that is materially adverse to the interests of investors in the Notes. If the manner in which Term SOFR or SOFR are calculated is changed, that change may result in a reduction in the amount of interest that accrues on the Notes during the floating rate period, which may adversely affect the trading prices of the Notes. Further, if the Benchmark rate on the Notes during the floating rate period on any determination date declines to zero or becomes negative, the Benchmark will be deemed to equal zero. In addition, once the Benchmark rate for the Notes for each interest period during the floating rate period is determined by the calculation agent on the determination date, interest on the Notes will accrue based on such Benchmark rate for the applicable interest period and will not be subject to change during such interest period. There is no assurance that changes in Term SOFR or SOFR could not have a material adverse effect on the yield on, value of and market for the Notes.

#### The interest rate for the Notes during the applicable floating rate period may be determined based on a rate other than Three-Month Term SOFR.
Under the terms of the Notes, the interest rate on the Notes for each interest period during the applicable floating rate period will be based on Three-Month Term SOFR, a forward-looking term rate for a tenor of three months that will be based on SOFR. Uncertainty surrounding the adoption and use of forward-looking term rates based on SOFR could have a material adverse effect on the return on, value of, and market for the Notes. Use and adoption of Three-Month SOFR or forward-looking term rates based on SOFR may require updates to systems and operational processes to facilitate the calculation and determination thereof. If, at the commencement of the floating rate period for the Notes, we determine that the use of a forward-looking rate for a tenor of three months based on SOFR is not administratively feasible, then the next-available Benchmark Replacement under the benchmark transition provisions will be used to determine the interest rate on the Notes during the applicable floating rate period (unless a Benchmark Transition Event and its related Benchmark Replacement Date occur with respect to that next-available Benchmark Replacement).

Under the terms of the Notes, the calculation agent (which may be us) is expressly authorized to make determinations, decisions or elections with respect to technical, administrative or operational matters that it decides are appropriate to reflect the use of Three-Month Term SOFR as the interest rate basis for the Notes, which are defined in the terms of the Notes as "Three-Month Term SOFR Conventions." Such determination and implementation of any Three-Month Term SOFR Conventions could result in adverse consequences to the amount of interest that accrues on the Notes during the applicable floating rate period, which could adversely affect the return on, value of and market for the Notes.

#### Any Benchmark Replacement may not be the economic equivalent of Three-Month Term SOFR.
Under the benchmark transition provisions of the Notes, if the calculation agent determines that a Benchmark Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR, then the floating interest rate on the Notes for each interest period during the floating rate period will be determined using the next-available Benchmark Replacement (which may include a related Benchmark Replacement Adjustment). However, the Benchmark Replacement may not be the economic equivalent of Three-Month Term SOFR. For example, Compounded SOFR, the first-available Benchmark Replacement, is the compounded average of the daily SOFR calculated in arrears, while Three-Month Term SOFR is intended to be a forward-looking rate with a tenor of three months. In addition, very limited market precedent exists for securities that use Compounded SOFR as the rate basis, and the method for calculating Compounded SOFR in those precedents varies. Further, the ISDA Fallback Rate (as defined under "Description of the Notes"), which is another Benchmark Replacement, has not yet been established and may change over time.

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#### The implementation of Benchmark Replacement Conforming Changes could adversely affect holders of the Notes.
Under the benchmark transition provisions of the Notes, if Three-Month Term SOFR has been discontinued or if a particular Benchmark Replacement or Benchmark Replacement Adjustment cannot be determined, then the next-available Benchmark Replacement or Benchmark Replacement Adjustment will apply. These replacement rates and adjustments may be selected or formulated by: (1) the Relevant Governmental Body (such as the ARRC or FRBNY); (2) the International Swaps and Derivatives Association, Inc. ("ISDA"); or (3) in certain circumstances, the calculation agent, which may be us. In addition, the benchmark transition provisions expressly authorize the calculation agent (which may be us) to make certain changes, which are defined in the terms of the Notes as "Benchmark Replacement Conforming Changes," with respect to, among other things, the determination of interest periods, and the timing and frequency of determining rates and making payments of interest. The application of a Benchmark Replacement and Benchmark Replacement Adjustment, and any implementation of Benchmark Replacement Conforming Changes, could result in adverse consequences to the amount of interest that accrues on the Notes during any interest period during the floating rate period, which could adversely affect the yield on, value of and market for the Notes. Further, there is no assurance that the characteristics of any Benchmark Replacement will be similar to the then-current Benchmark rate that it is replacing, or that any Benchmark Replacement will produce the economic equivalent of the then-current Benchmark rate that it is replacing.

Also, since SOFR and Term SOFR are relatively new market indices, SOFR-linked debt securities may not have an established trading market when issued, and an established trading market may never develop or may not be very liquid. Market terms for debt securities indexed to SOFR or Term SOFR, such as the spread over the index reflected in interest rate provisions, may evolve over time, and trading prices of the Notes may be lower than those of later-issued SOFR-linked debt securities as a result. Similarly, if Term SOFR or SOFR does not prove to be widely used in securities similar to the Notes, the trading price of the Notes may be lower than those of debt securities linked to such rates that are more widely used. Debt securities indexed to Term SOFR (as the Notes will be) may not be able to be sold at all or may not be able to be sold at prices that will provide a yield comparable to similar investments that have a developed secondary market, and may consequently suffer from increased pricing volatility and market risk.

 **A change in the Benchmark interest rate may be treated as a significant modification of the Notes for tax purposes, which could result in taxable gain or loss to holders.** 

If a term of the Notes, such as the interest rate, is altered such that the Notes are impacted to a degree that is economically significant, the Notes will be treated as exchanged for the modified notes for federal tax purposes. A deemed exchange of the Notes could result in gain or loss to the holders. Thus, if the Benchmark interest rate is replaced with a rate other than the Three-Month Term SOFR, such replacement could adversely affect the holders of the Notes.

 **We or an affiliate of ours will or could have authority to make determinations and elections that could affect the return on, value of and market for the Notes.** 

Under the terms of the Notes, we may make certain determinations, decisions and elections with respect to the Benchmark rate on the Notes during the floating rate period, including, without limitation, any determination, decision or election required to be made by the calculation agent that the calculation agent fails to make. We will make any such determination, decision or election in our sole discretion, and any such determination, decision or election that we make could affect the amount of interest that accrues on the Notes during any interest period in the floating rate period. If the calculation agent fails, when required, to make a determination that a Benchmark Transition Event and its related Benchmark Replacement Date have occurred, or fails, when required, to determine the Benchmark Replacement and Benchmark Replacement Adjustment, then we will make those determinations in our sole discretion. Furthermore, we or an affiliate of ours may serve as calculation agent. We expect to act as the initial calculation agent and, though we will appoint a calculation agent prior to the commencement of the floating rate period, we may appoint ourselves or an affiliate and we cannot assure you that we will appoint an independent third-party calculation agent at any time. Any exercise of discretion by us under the terms of the Notes, including, without limitation, any discretion exercised by us or by an affiliate acting as calculation agent,

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could present a conflict of interest. In making the required determinations, decisions and elections, we or an affiliate of ours acting as calculation agent may have economic interests that are adverse to the interest of the holders of the Notes, and those determinations, decisions or elections could have a material adverse effect on the yield on, value of and market for the Notes. All determinations, decisions or elections by us, or by us or an affiliate acting as calculation agent, under the terms of the Notes will be conclusive and binding absent manifest error.

#### The Notes may be issued with original issue discount for U.S. federal income tax purposes.
The Notes may be issued with original issue discount for U.S. federal income tax purposes. In such case, holders subject to U.S. federal income taxation, whether on the cash or accrual method of tax accounting, generally would be required to include any amounts representing original issue discount in gross income (as ordinary income) as the original issue discount accrues on a constant yield to maturity basis, in advance of the receipt of cash payments to which such income is attributable. See "Material U.S. Federal Income Tax Considerations."

 **The use of the net proceeds from the sale of the Notes will be at the discretion of our management and could change depending on unforeseen events or changes in current business conditions or our circumstances.** 

While our current intention is to use the net proceeds from this offering for general corporate purposes, as discussed further under "Use of Proceeds" below, our management will have broad discretion in the use of the net proceeds from the sale of the Notes. The occurrence of any unforeseen events or change in business conditions could result in the application of the net proceeds of the offering in a manner other than as described in this prospectus supplement.

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#### USE OF PROCEEDS
We estimate that the net proceeds from this offering will be approximately $147.3 million, after deducting the underwriting discount and our estimated offering expenses. We intend to use the net proceeds from this offering for general corporate purposes.

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#### CAPITALIZATION
The following table shows our capitalization as of September 30, 2025:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1) on an actual basis; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2) on an adjusted basis to give effect to the issuance and sale of the Notes in this offering (after deducting the underwriting discount and estimated offering expenses).

You should read this table in conjunction with our consolidated financial statements, the related notes and other financial information contained in our [Annual Report on Form 10-K for our fiscal year ended December 31, 2024](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000155837025001502/nbhc-20241231x10k.htm) and our [Quarterly Report on Form 10-Q for our fiscal quarter ended September 30, 2025](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000063/nbhc-20250930x10q.htm), which are incorporated by reference in this prospectus supplement and the accompanying prospectus. See "Where You Can Find More Information."

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| | | |
|:---|:---|:---|
| | **As of September 30, 2025**  | **As of September 30, 2025**  |
| **(Dollars in thousands)**  | **Actual**  | **As adjusted for <br> this offering**  |
| **Cash and Cash Equivalents**  | $555560 | $702885 |
| **Liabilities and Shareholders' Equity:** |  |  |
| Deposits  | 8471680 | 8471680 |
| Securities sold under agreements to repurchase  | 21303 | 21303 |
| Federal Home Loan Bank advances  |  |  |
| Long-term debt, net  | 54743 | 54743 |
| &nbsp;&nbsp;&nbsp; 5.875% Notes offered hereby<sup>(1)</sup>  |  | 147325 |
| Other liabilities  | 230031 | 230031 |
| Total liabilities  | 8777757 | 8925082 |
| Shareholders' Equity: |  |  |
|  Common stock, par value $0.01 per share: 400,000,000 shares authorized; 51,487,888 shares issued; and 37,815,589 shares outstanding at September 30, 2025  | 515 | 515 |
| Additional paid-in capital  | 1169982 | 1169982 |
| Retained earnings  | 568276 | 568276 |
| Treasury stock of 13,340,349 shares at September 30, 2025, at cost  | (312873) | (312873) |
| Accumulated other comprehensive loss, net of tax  | (50971) | (50971) |
| Total shareholders' equity  | 1374929 | 1374929 |
| Total liabilities and shareholders' equity  | $10152686 | $10300011 |
| **Capital Ratios of the Company** |  |  |
| Tier 1 leverage ratio  | 11.5% | 11.4% |
| Common equity tier 1 risk based capital ratio  | 14.7% | 14.7% |
| Tier 1 risk based capital ratio  | 14.7% | 14.7% |
| Total risk based capital ratio  | 16.6% | 18.0% |

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(1) Represents the aggregate principal amount of the Notes, reduced by the underwriting discount ($1,875,000) and our estimated offering expenses ($800,000).

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#### DESCRIPTION OF THE NOTES
 *We will issue the Notes under the Base Indenture, as supplemented by the First Supplemental Indenture. You may request a copy of the Indenture from us as described under "Incorporation of Certain Documents by Reference." We have summarized the material terms of the Indenture and the Notes below, but the summary does not purport to be complete and is subject to and qualified in its entirety by reference to the Indenture and the Notes. The following description of the terms of the Indenture and the Notes supplements and, to the extent inconsistent therewith, replaces and supersedes the description of the general terms and provisions of the subordinated debt securities in the accompanying prospectus.* 

 *You should read the Indenture and the Notes because they, and not this description, define your rights as holders of the Notes. For purposes of this section, references to "NBHC," the "Company," "we," "us" and "our" include only NBHC and not any of its subsidiaries.* 

#### General
The Notes offered hereby will be issued under a subordinated debt indenture, to be dated as of February 11, 2026, as amended and supplemented by a first supplemental indenture, to be dated as of February 11, 2026, between the Company and U.S. Bank Trust Company, National Association, as trustee.

The Notes will be our general unsecured, subordinated obligations and will rank equally with all of our unsecured, subordinated obligations from time to time outstanding, including our outstanding subordinated fixed-to-floating rate notes due in June and November 2031 (the "2031 Notes"). The Notes will rank junior to all of our existing and future Senior Debt (as defined below) to the extent and in the manner set forth in the Indenture. In addition, the Notes will be effectively subordinated to all of our secured indebtedness to the extent of the value of the collateral securing such indebtedness. The Notes will be structurally subordinated to all of the existing and future liabilities and obligations of our subsidiaries, including the deposit liabilities and claims of other creditors of our subsidiary banks, NBH Bank and Bank of Jackson Hole Trust (the "Banks"). See "— Subordination." The Notes will be obligations of National Bank Holdings Corporation only and will not be obligations of, and will not be guaranteed by, any of our subsidiaries.

The Notes will mature on February 15, 2036 (the "Maturity Date"), unless previously redeemed or otherwise accelerated. The Notes are not convertible into, or exchangeable for, equity securities, other securities, or assets or property of the Company or its subsidiaries. There is no sinking fund for the Notes. We intend for the Notes to qualify (subject to applicable limitations) as Tier 2 capital under applicable capital regulations, guidance, and interpretations of the Federal Reserve. We do not intend to apply for the listing of the Notes on any securities exchange or the quotation of the Notes on any quotation system. The Notes will be issued in minimum denominations of $1,000 and integral multiples of $1,000 in excess thereof.

Beginning with the interest payment date of February 15, 2031, and on any interest payment date thereafter, we may, at our option, subject to obtaining the prior approval of the Federal Reserve to the extent such approval is then required under the rules of the Federal Reserve ("Federal Reserve Approval"), redeem the Notes, in whole or in part, at a price equal to 100% of the principal amount of the Notes to be redeemed plus any accrued and unpaid interest to, but excluding, the redemption date. The Notes may not be redeemed by us prior to February 15, 2031, except that we may, at our option, subject to Federal Reserve Approval, redeem the Notes in whole, but not in part, prior to maturity, including prior to February 15, 2031, upon the occurrence of a "Tax Event" or a "Tier 2 Capital Event" (as such terms are defined in the Indenture) or if we are required to register as an investment company pursuant to the 1940 Act, in each case, at a price equal to 100% of the principal amount of the Notes to be redeemed plus any accrued and unpaid interest to, but excluding, the redemption date. Any partial redemption will be made in accordance with the applicable procedures of The Depository Trust Company (with its successors, "DTC"). See "— Redemption."

#### Further Issues
The Indenture does not limit the amount of Notes that we may issue from time to time in one or more series. The Indenture permits us to increase the principal amount of the Notes by issuing additional Notes on the same terms and conditions as the Notes (except for any differences in the issue price and interest

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accrued prior to the date of issuance of the additional Notes), and with the same CUSIP number as the Notes, provided that the additional Notes are fungible with the Notes for United States federal income tax purposes. The Notes and any additional Notes issued by the Company will rank equally and ratably and shall be treated as a single series of securities for all purposes under the First Supplemental Indenture.

#### Interest
From and including the date of original issuance to, but excluding, February 15, 2031 or the date of earlier redemption (the "fixed rate period"), the Notes will bear interest at a rate of 5.875% per annum, payable semi-annually in arrears on February 15 and August 15 of each year (each, a "fixed rate interest payment date"), commencing on August 15, 2026. The last fixed rate interest payment date for the fixed rate period will be February 15, 2031.

From and including February 15, 2031 to, but excluding, the Maturity Date or the date of earlier redemption (the "floating rate period"), the Notes will bear interest at a floating rate per annum equal to the Benchmark rate (which is expected to be Three-Month Term SOFR) plus a spread of 241 basis points. For each quarterly interest period during the floating rate period, interest will be payable quarterly in arrears on February 15, May 15, August 15 and November 15 of each year (each, a "floating rate interest payment date" and, together with the fixed rate interest payment dates, the "interest payment dates"), commencing on May 15, 2031. Notwithstanding the foregoing, if the Benchmark rate is less than zero, the Benchmark rate shall be deemed to be zero.

For the purpose of calculating the interest on the Notes for each interest period during the floating rate period when the Benchmark is Three-Month Term SOFR, "Three-Month Term SOFR" means the rate for Term SOFR for a tenor of three months that is published by the Term SOFR Administrator at the Reference Time for any interest period, as determined by the calculation agent after giving effect to the Three-Month Term SOFR Conventions. We will act as the initial calculation agent. All percentages used in or resulting from any calculation of Three-Month Term SOFR will be rounded, if necessary, to the nearest one-hundred-thousandth of a percentage point, with 0.000005% rounded up to 0.00001%.

The following definitions apply to the foregoing definition of Three-Month Term SOFR:

"Benchmark" means, initially, Three-Month Term SOFR; provided that if the calculation agent determines on or prior to the Reference Time that a Benchmark Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR or the then-current Benchmark, then "Benchmark" means the applicable Benchmark Replacement.

"FRBNY's Website" means the website of the FRBNY at http://www.newyorkfed.org, or any successor source. The foregoing Internet 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 by reference herein or therein.

"Reference Time" with respect to any determination of the Benchmark means (1) if the Benchmark is Three-Month Term SOFR, the date that is two U.S. Government Securities Business Days prior to the start of the relevant floating rate interest period, or such other time determined by the calculation agent after giving effect to the Three-Month Term SOFR Conventions, and (2) if the Benchmark is not Three-Month Term SOFR, the time determined by the calculation agent after giving effect to the Benchmark Replacement Conforming Changes.

"Relevant Governmental Body" means the Federal Reserve and/or the FRBNY, or a committee officially endorsed or convened by the Federal Reserve and/or the FRBNY or any successor thereto.

"SOFR" means the secured overnight financing rate published by the FRBNY, as the administrator of the Benchmark (or a successor administrator), on the FRBNY's Website.

"Term SOFR" means the forward-looking term rate based on SOFR that has been selected or recommended by the Relevant Government Body.

"Term SOFR Administrator" means CME Group Benchmark Administration Limited (CBA) (or a successor administrator of Three-Month Term SOFR selected by the calculation agent in its reasonable discretion).

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"Three-Month Term SOFR Conventions" means any determination, decision or election with respect to any technical, administrative or operational matter (including with respect to the manner and timing of the publication of Three-Month Term SOFR, or changes to the definition of "interest period," timing and frequency of determining Three-Month Term SOFR with respect to each interest period and making payments of interest, rounding of amounts or tenors, and other administrative matters) that the calculation agent decides may be appropriate to reflect the use of Three-Month Term SOFR as the Benchmark in a manner substantially consistent with market practice (or, if the calculation agent decides that adoption of any portion of such market practice is not administratively feasible or if the calculation agent determines that no market practice for the use of Three-Month Term SOFR exists, in such other manner as the calculation agent determines is reasonably necessary).

"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.

The terms "Benchmark Replacement," "Benchmark Replacement Conforming Changes," "Benchmark Replacement Date," "Benchmark Transition Event" and "Corresponding Tenor" have the meanings set forth below under the heading "— Effect of Benchmark Transition Event."

Notwithstanding the foregoing paragraphs related to the determination of interest, if the calculation agent determines on or prior to the relevant Reference Time that a Benchmark Transition Event and its related Benchmark Replacement Date (each as defined below) have occurred with respect to Three-Month Term SOFR, then the provisions set forth below under the heading "— Effect of Benchmark Transition Event," which we refer to as the "benchmark transition provisions," will thereafter apply to all determinations of the interest rate on the Notes for each interest period during the floating rate period. In accordance with the benchmark transition provisions, after a Benchmark Transition Event and its related Benchmark Replacement Date have occurred, the interest rate on the Notes for each interest period during the floating rate period will be an annual rate equal to the Benchmark Replacement plus 241 basis points.

Absent manifest error, the calculation agent's determination of the interest rate for an interest period for the Notes will be binding and conclusive on you, the trustee and us. The calculation agent's determination of any interest rate, and its calculation of interest payments for any period, will be maintained on file at the calculation agent's principal offices, will be made available to any holder of the Notes upon request and will be provided to the trustee.

Interest shall be calculated on the basis of a 360-day year consisting of twelve 30-day months during the fixed rate period and on the basis of a 360-day year and the actual number of days elapsed during the floating rate period. Dollar amounts resulting from that calculation will be rounded to the nearest cent, with one-half cent being rounded upward.

Interest on the Notes, subject to certain exceptions, will accrue during the applicable interest period. When we use the term "interest period," we mean the period from and including the immediately preceding interest payment date in respect of which interest has been paid or duly provided for or, if no interest has been paid or duly provided for, from and including the date of issuance of the Notes to, but excluding, the applicable interest payment date or the Maturity Date or date of earlier redemption, if applicable. If a fixed rate interest payment date or the Maturity Date falls on a day that is not a business day, then the interest payment or the payment of principal and interest at maturity will be paid on the next succeeding business day, but the payments made on such dates will be treated as being made on the date that the payment was first due and the holders of the Notes will not be entitled to any further interest or other payments. If a floating rate interest payment date falls on a day that is not a business day, then such floating rate interest payment date will be postponed to the next succeeding business day unless such day falls in the next succeeding calendar month, in which case such floating rate interest payment date will be accelerated to the immediately preceding business day, and, in each such case, the amounts payable on such business day will include interest accrued to, but excluding, such business day.

Interest on each Note will be payable to the person in whose name such Note is registered on the fifteenth day immediately preceding the applicable interest payment date, whether or not such day is a business day. Any interest which is payable, but is not punctually paid or duly provided for, on any interest

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payment date shall cease to be payable to the holder on the relevant record date by virtue of having been a holder on such date, and such defaulted interest may be paid by us to the person in whose name the Notes are registered at the close of business on a special record date for the payment of defaulted interest, or in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Notes may be listed. However, interest that is paid on the Maturity Date will be paid to the person to whom the principal will be payable. Interest will be payable by wire transfer in immediately available funds in U.S. dollars at the office of the principal paying agent or, at our option in the event the Notes are not represented by global notes, by check mailed to the address of the person specified for payment in the preceding sentences.

If the then-current Benchmark is Three-Month Term SOFR, the calculation agent will have the right to establish the Three-Month Term SOFR Conventions, and if any of the foregoing provisions concerning the calculation of the interest rate and interest payments during the floating rate period are inconsistent with any of the Three-Month Term SOFR Conventions determined by the calculation agent, then the relevant Three-Month Term SOFR Conventions will apply. Furthermore, if the calculation agent determines that a Benchmark Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR at any time when any of the Notes are outstanding, then the foregoing provisions concerning the calculation of the interest rate and interest payments during the floating rate period will be modified in accordance with the benchmark transition provisions.

"Business day" means (i) each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which banking institutions in New York are authorized or obligated by law or executive order to close or (ii) a day on which the corporate trust office of the trustee is not closed for business; provided, that, when used in connection with an amount that bears interest at a rate based on SOFR or Term SOFR or any direct or indirect calculation or determination of SOFR or Term SOFR, the term "business day" means any such day that is also a U.S. Government Securities Business Day.

#### Ranking
The Notes are our general unsecured, subordinated obligations and are:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • junior in right of payment to any of our existing and future Senior Debt;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • equal in right of payment with any of our existing and future subordinated indebtedness, including the 2031 Notes;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • effectively subordinated to all of our secured indebtedness to the extent of the value of the collateral securing such indebtedness; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • structurally subordinated to any existing and future liabilities and obligations of our subsidiaries, including the deposit liabilities and claims of other creditors of the Banks.

#### Subordination
The Notes are junior in right of payment to the prior payment in full of all our Senior Debt. This means that, under certain circumstances where we may not be making payments on all of our debt obligations as they become due, the holders of all of our Senior Debt will be entitled to receive payment in full of all amounts that are due or will become due on their debt securities before the holders of the Notes will be entitled to receive any amounts under the Notes. These circumstances include when we make a payment or distribute assets to creditors upon our liquidation or dissolution or in a bankruptcy, reorganization, insolvency, receivership or similar proceeding related to the Company or its property.

These subordination provisions mean that if we are insolvent, a direct holder of a specific amount of our Senior Debt may ultimately receive more of our assets than a direct holder of the same amount of Notes, and our creditor that is owed a specific amount may ultimately receive more of our assets than a direct holder of the same amount of Notes. The Indenture does not limit our ability to incur Senior Debt or general obligations, including indebtedness ranking equally with the Notes or secured debt.

Holders of the Notes may not accelerate the maturity of the Notes, except upon an event of default. See "— Events of Default" below.

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The Indenture provides that, unless all principal of and interest on Senior Debt has been paid in full, no payment or other distribution may be made in respect of any Notes under the following circumstances:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • in the event of any liquidation or dissolution or in a bankruptcy, reorganization, insolvency, receivership or similar proceeding related to the Company or its property;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • in the event and during the continuation of any default in the payment of principal of (or premium, if any) or interest on any Senior Debt beyond any applicable grace period with respect thereto, the holders of such Senior Debt are permitted to accelerate its maturity, or in the event any judicial proceeding shall be pending with respect to any such default; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • in the event that any Notes have been declared due and payable before their stated maturity.

If the trustee or any holders of Notes receive any payment or distribution that is prohibited under the subordination provisions, and if this fact is made known to the trustee or holders at or prior to the time of such payment or distribution, then the trustee or the holders will have to pay over that money to us.

Further, in the event of any liquidation or dissolution or in a bankruptcy, reorganization, insolvency, receivership or similar proceeding related to the Company or its property, any creditors in respect of general obligations will be entitled to receive payment in full of all amounts due or to become due on or in respect of such general obligations, before any amount is made available for payment or distribution to the holders of the Notes.

Even if the subordination provisions prevent us from making any payment when due on the Notes, we will be in default on our obligations under the Notes if we do not make the payment when due. This means that the trustee and the holders of Notes can take action against us, but they will not receive any money until the claims of the holders of Senior Debt have been fully satisfied.

"Senior Debt" means the principal of (and premium, if any) and interests, if any on:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; i.

all obligations for borrowed money;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ii.

all obligations evidenced by bonds, debentures, securities, notes or other similar instruments;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; iii.

any deferred obligations of the Company for the payment of the purchase price of property or assets acquired other than in the ordinary course of business;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; iv.

all obligations, contingent or otherwise, of the Company in respect of any letters of credit, bankers' acceptances, security purchase facilities and similar direct credit substitutes;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; v.

any capital lease obligations of the Company;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; vi.

all obligations of the Company in respect of interest rate swap, cap or other agreements, interest rate future or option contracts, currency swap agreements, currency future or option contracts, commodity contracts and other similar arrangements or derivative products;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; vii.

any obligation of the Company to its general creditors, as defined for purposes of the capital adequacy regulations of the Federal Reserve applicable to the Company, as the same may be amended or modified from time to time;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; viii.

all obligations that are similar to those in clauses (i) through (vi) above of other persons for the payment of which the Company is responsible or liable as obligor, guarantor or otherwise arising from an off-balance sheet guarantee;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ix.

all obligations of the types referred to in clauses (i) through (vii) above of other persons secured by a lien on any property or asset of the Company; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; x.

in the case of (i) through (ix) above, all amendments, renewals, extensions, modifications and refundings of such indebtedness and obligations;

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However, Senior Debt does not include:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (A)

the Notes;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (B)

the 2031 Notes;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (C)

any obligation that by its terms expressly is junior to, or ranks equally in right of payment with, the Notes;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (D)

any indebtedness to a Subsidiary of the Company.

As of September 30, 2025, the Company had no Senior Debt. The Notes and the Indenture do not contain any limitation on the amount of Senior Debt that we may hereafter incur.

We are a financial holding company and our primary operations are conducted through the Banks. We rely on dividends and other payments or distributions from our subsidiaries to pay the interest on our debt obligations (such as the Notes offered hereby), which interest expense was $1.6 million for the nine months ended September 30, 2025 and $2.1 million and $2.1 million for the years ended December 31, 2024 and 2023, respectively (holding company only). Federal and state bank regulations impose certain restrictions on the ability of our bank subsidiaries to pay dividends directly or indirectly to us, to make any extensions of credit to us or certain of our affiliates and to invest in our stock or securities. These regulations also prevent us from borrowing from our bank subsidiaries unless the loans are secured by collateral. Accordingly, we may not have access to sufficient cash to make payments on the Notes. See "Risk Factors" in this prospectus supplement and the accompanying prospectus and Item "1A. Risk Factors" in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024.

Because we are a holding company, our right and the rights of our creditors, including holders of the Notes, to participate in any distribution of assets of any of our subsidiaries upon their liquidation, reorganization, dissolution, winding up or otherwise would be subject to the prior claims of creditors of that subsidiary (except to the extent that we are a creditor with a recognized claim). In the event of any such distribution of assets of our bank subsidiaries due in part to their status as insured depository institutions, the claims of depositors and other general or subordinated creditors of such bank subsidiaries would be entitled to priority over claims of shareholders of such bank subsidiary, including us as its parent holding company and any creditor of ours, such as holders of the Notes. As of September 30, 2025, we had $8.5 billion of deposits and $3.6 million of interest expense related to FHLB advances, repurchase agreements and other short-term borrowings, to which the Notes will be structurally subordinated, as well as $1.6 million interest expense related to the 2031 Notes.

#### No Additional Amounts
In the event that any payment on the Notes is subject to withholding of any U.S. federal income tax or other tax or assessment (as a result of a change in law or otherwise), we will not pay additional amounts with respect to such tax or assessment. For a discussion relating to certain U.S. federal income tax consequences of the ownership and disposition of the Notes, see "Material U.S. Federal Income Tax Considerations."

#### Redemption
We may, at our option, beginning with the interest payment date of February 15, 2031, but not prior thereto (except upon the occurrence of certain events specified below), and on any interest payment date thereafter, redeem the Notes, in whole or in part, from time to time, subject to obtaining Federal Reserve Approval, at a price equal to 100% of the principal amount of the Notes being redeemed plus accrued and unpaid interest to, but excluding, the date of redemption.

The Notes may not otherwise be redeemed prior to the Maturity Date, except that we may also, at our option, redeem the Notes, in whole, but not in part, subject to obtaining Federal Reserve Approval, at a redemption price equal to 100% of the principal amount of the Notes being redeemed plus accrued and unpaid interest to, but excluding, the date of redemption, at any time, including before February 15, 2031, upon the occurrence of:

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a "Tax Event," defined in the Indenture to mean the receipt by us of an opinion of independent tax counsel to the effect that as a result of (a) an amendment to or change (including any announced prospective amendment or change) in any law or treaty, or any regulation thereunder, of the United States or any of its political subdivisions or taxing authorities; (b) a judicial decision, administrative action, official administrative pronouncement, ruling, regulatory procedure, regulation, notice or announcement, including any notice or announcement of intent to adopt or promulgate any ruling, regulatory procedure or regulation (any of the foregoing, an "*administrative or judicial action*"); or (c) an amendment to or change in any official position with respect to, or any interpretation of, an administrative or judicial action or a law or regulation of the United States that differs from the previously generally accepted position or interpretation, in each case, which change or amendment or challenge becomes effective or which pronouncement, decision or challenge is announced on or after the original issue date of the Notes, there is more than an insubstantial risk that interest payable by us on the Notes is not, or, within 90 days of the date of such opinion, will not be, deductible by us, in whole or in part, for United States federal income tax purposes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a "Tier 2 Capital Event," defined in the Indenture to mean our good faith determination that, as a result of (a) any amendment to, or change in, the laws, rules or regulations of the United States (including, for the avoidance of doubt, any agency or instrumentality of the United States, including the Federal Reserve and other federal bank regulatory agencies) or any political subdivision of or in the United States that is enacted or becomes effective after the original issue date of the Notes; (b) any proposed change in those laws, rules or regulations that is announced or becomes effective after the original issue date of the Notes; or (c) any official administrative decision or judicial decision or administrative action or other official pronouncement interpreting or applying those laws, rules, regulations, policies or guidelines with respect thereto that is announced after the original issue date of the Notes, there is more than an insubstantial risk that we will not be entitled to treat the Notes then outstanding as "Tier 2 Capital" (or its equivalent) for purposes of the capital adequacy rules or regulations of the Federal Reserve (or, as and if applicable, the capital adequacy rules or regulations of any successor appropriate federal banking agency) as then in effect and applicable to us, for so long as any Notes are outstanding.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the Company becoming required to register as an investment company pursuant to the 1940 Act.

In the event of any redemption of the Notes, we will deliver or cause to be delivered a notice of redemption (which notice may be conditional in our discretion on one or more conditions precedent, and the redemption date may be delayed until such time as any or all of such conditions have been satisfied or revoked by us if we determine that such conditions will not be satisfied) to each holder of Notes (with a copy to the trustee) not less than 15 nor more than 60 days prior to the redemption date.

Any partial redemption will be made in accordance with DTC's applicable procedures among all of the holders of the Notes. If any Note is to be redeemed in part only, the notice of redemption relating to such Note shall state that it is a partial redemption and the portion of the principal amount thereof to be redeemed. The Notes are not subject to redemption or prepayment at the option of the holders.

#### Events of Default
The only "events of default" with respect to the Notes under the Indenture are certain events related to our bankruptcy or insolvency, whether voluntary or involuntary, or certain events related to the insolvency of the Banks (or either of them) which represents 50% or more of our consolidated assets or any subsidiary of ours in the future which represents 50% or more of our consolidated assets. If an event of default with respect to the Notes occurs and is continuing, the principal amount of all of the Notes shall become and be immediately due and payable without any declaration or other action on the part of the trustee or any holder of the Notes. If an event of default with respect to the Notes occurs and is continuing, the trustee may enforce its rights and the rights of the holders of the Notes by any judicial proceedings that the trustee deems to be most effectual to do so.

The maturity of the Notes may only be accelerated upon the occurrence of an event of default described above. There is no right of acceleration of the payment of principal of the Notes upon a "default" in the payment of principal of or interest on the Notes or in the performance of any of our covenants or

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agreements contained in the Notes, in the Indenture or any of our other obligations or liabilities, including the events described as a "default" below. For purposes of the Notes, "default" means (i) default in the payment payable in respect of the Notes or of any coupon appertaining thereto, when such interest or coupon becomes due and payable, and continuance of such default for a period of 30 days; or, (ii) default in the payment of the principal of the Notes when it becomes due and payable at its Maturity Date, by acceleration of its Maturity Date or otherwise, and (iii) our default in the performance, or breach, of any covenant or agreement in the Indenture applicable to us and the Notes, and continuance of such default or breach for a period of 90 days after there has been given, by registered or certified mail, to us by the trustee or to us and the trustee by the holders of at least 25% in aggregate principal amount of the outstanding Notes a written notice specifying such default or breach and requiring it to be remedied and stating that such notice is a notice of default under the Indenture. If a default in the payment of principal of or interest on the Notes occurs and is continuing under the Indenture, the trustee and holders of the Notes will have a right to institute suit directly against us for the collection of such overdue payment. Other than upon a default in the payment of principal of or interest on the Notes, the holders of the Notes will have limited rights to institute proceedings to enforce the terms of the Indenture.

#### Modification
From time to time, we, together with the trustee, may, without the consent of the holders of Notes, amend the Indenture for one or more of the following purposes:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to provide for the assumption by a successor corporation of our covenants under the Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to add to our covenants and the default provisions for the benefit of the holders of Notes or to surrender any right or power conferred upon us by the Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to permit or facilitate the issuance of Notes in bearer form or in uncertificated form;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to cure ambiguities, defects or inconsistencies, so long as the amendment does not adversely affect the interests of the holders of Notes in any material respect as determined in good faith by us;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to appoint a successor trustee with respect to the Notes, and to make any change necessary to provide for the appointment of more than one trustee;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to establish the form or terms of a series of Notes;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to make any change to the Indenture that (i) neither applies to any Note of any series created prior to the execution of such supplemental indenture and entitled to the benefit of such provision nor modifies the rights of any Note holder with respect to such provision, or (ii) shall become effective only when there is no such Note outstanding; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to secure the Notes.

The Indenture permits us and the trustee, with the consent of the holders of a majority in aggregate principal amount of each series of the outstanding Notes affected thereby, to modify the Indenture in a manner affecting the rights of the holders of the Notes of such series; provided that no modification may, without the consent of the holders of each outstanding note affected:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • change the maturity of the principal of any Note or the timing of an interest payment on a Note;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • reduce the principal amount or the rate of interest of any Note;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • reduce the amount of the principal of any Note which would be due and payable upon a declaration of acceleration;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • change the place of payment where, or the currency or currencies, currency unit or units or composite currency or currencies in which any Note principal or interest is payable;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • impair the right to institute suit for the enforcement of any such due and payable obligation; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • modify the percentage of any series, the consent of whose holders is required for any such supplemental indenture, except to increase the required percentage to effect such action or to provide that certain other provisions of the Indenture cannot be modified or waived without the consent of the holders of the series of Notes affected thereby.

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#### Consolidation, Merger, Sale of Assets and Other Transactions
We will not consolidate with or merge into any other person or convey, transfer or lease all or substantially all of our properties and assets to any person, unless:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • if we are the surviving person or if we consolidate with or merge into another person or sell, convey, transfer or lease substantially all of our properties and assets to any person, the successor is a corporation, partnership, limited liability company or trust organized under the laws of the United States of America or any state or the District of Columbia, and the successor expressly assumes our obligations relating to the Notes and the Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • immediately after giving effect to the transaction, no "event of default" and no event which, after notice or lapse of time or both, would become an "event of default" shall have occurred and be continuing; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • certain other conditions described in the Indenture are met.

The general provisions of the Indenture do not limit the rights of National Bank Holdings Corporation to enter into transactions, such as a highly leveraged transaction, that may adversely affect the holders of the Notes.

#### Satisfaction and Discharge
The Indenture provides that when, among other things, all Notes not previously delivered to the trustee for cancellation:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • have become due and payable,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • will become due and payable at their stated maturity within one year, or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • are to be called for redemption within one year under arrangements satisfactory to the trustee for the giving of notice of redemption by the trustee,

and we irrevocably deposit or cause to be deposited with the trustee as trust funds in trust for such purpose money in an amount sufficient to pay and discharge the entire indebtedness on the Notes not previously delivered to the trustee for cancellation, for the principal and any premium and interest to the date of such deposit (in the case of Notes which have become due and payable) or to the Maturity Date or the date of redemption, as the case may be;

then, upon our request, the Indenture will cease to be of further effect, and we will be deemed to have satisfied and discharged the Indenture with respect to the Notes. However, we will continue to be obligated to pay all other sums due under the Indenture and to provide the officers' certificates and opinions of counsel described in the Indenture.

#### Defeasance
We may at any time terminate all of our obligations under the Notes, except for certain obligations, including those respecting the defeasance trust. Our obligations will be deemed to have been discharged if the following applicable conditions have been satisfied:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • we have irrevocably deposited in trust with the trustee or the defeasance agent, if any, money or U.S. government obligations for the payment of principal and interest on the Notes to maturity;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • we have delivered to the trustee or defeasance agent an officers' certificate and an opinion of counsel to the effect that all conditions relating to the satisfaction and discharge pursuant to the Indenture have been complied with;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • such defeasance will not result in a breach or violation, or constitute a default under, the Indenture or any other material agreement or instrument to which we are a party (other than a breach or violation resulting from the borrowing of funds to make such deposit and the grant of any lien securing such borrowings);

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • we have delivered to the trustee and the defeasance agent, if any, an opinion of counsel to the effect that holders of the Notes will not recognize gain or loss for United States federal income tax purposes as a result of such defeasance and will be subject to United States federal income tax on the same amount and in the same manner and at the same times as would have been the case if such defeasance had not occurred; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • certain other conditions set forth in the Indenture.

Any defeasance of the Notes pursuant to the Indenture shall be subject to our obtaining the prior approval of the Federal Reserve and any additional requirements that the Federal Reserve may impose with respect to defeasance of the Notes. Notwithstanding the foregoing, if, due to a change in law, regulation or policy subsequent to the issue date of the Notes the Federal Reserve does not require that defeasance of instruments be subject to Federal Reserve approval in order for the instrument to be accorded Tier 2 capital treatment, then no such approval of the Federal Reserve will be required for such defeasance.

#### Effect of Benchmark Transition Event
<u>Benchmark Replacement</u>. If the calculation agent determines that a Benchmark Transition Event and its related Benchmark Replacement Date have occurred on or prior to the Reference Time in respect of any determination of the Benchmark on any date, then the Benchmark Replacement will replace the then-current Benchmark for all purposes relating to the Notes during the floating rate period in respect of such determination on such date and all determinations on all subsequent dates.

<u>Benchmark Replacement Conforming Changes</u>. In connection with the implementation of a Benchmark Replacement, the calculation agent will have the right to make Benchmark Replacement Conforming Changes from time to time.

<u>Certain Defined Terms</u>. As used herein:

"Benchmark Replacement" means the Interpolated Benchmark with respect to the then-current Benchmark, plus the Benchmark Replacement Adjustment for such Benchmark; provided that if (a) the calculation agent cannot determine the Interpolated Benchmark as of the Benchmark Replacement Date or (b) the then-current Benchmark is Three-Month Term SOFR and a Benchmark Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR (in which event no Interpolated Benchmark with respect to Three-Month Term SOFR shall be determined), then "Benchmark Replacement" means the first alternative set forth in the order below that can be determined by the calculation agent as of the Benchmark Replacement Date:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)

Compounded SOFR;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)

the sum of: (a) the alternate rate that has been selected or recommended by the Relevant Governmental Body as the replacement for the then-current Benchmark for the applicable Corresponding Tenor and (b) the Benchmark Replacement Adjustment;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (3)

the sum of: (a) the ISDA Fallback Rate and (b) the Benchmark Replacement Adjustment;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (4)

the sum of: (a) the alternate rate that has been selected by the calculation agent as the replacement for the then-current Benchmark for the applicable Corresponding Tenor, giving due consideration to any industry-accepted rate as a replacement for the then-current Benchmark for U.S. dollar-denominated floating rate securities at such time, and (b) the Benchmark Replacement Adjustment.

"Benchmark Replacement Adjustment" means the first alternative set forth in the order below that can be determined by the calculation agent as of the Benchmark Replacement Date:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)

the spread adjustment, or method for calculating or determining such spread adjustment (which may be a positive or negative value or zero), that has been selected or recommended by the Relevant Governmental Body for the applicable Unadjusted Benchmark Replacement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)

if the applicable Unadjusted Benchmark Replacement is equivalent to the ISDA Fallback Rate, then the ISDA Fallback Adjustment; and

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (3)

the spread adjustment (which may be a positive or negative value or zero) that has been selected by the calculation agent giving due consideration to any industry-accepted spread adjustment or method for calculating or determining such spread adjustment, for the replacement of the then-current Benchmark with the applicable Unadjusted Benchmark Replacement for U.S. dollar-denominated floating rate securities at such time.

"Benchmark Replacement Conforming Changes" means, with respect to any Benchmark Replacement, any technical, administrative or operational changes (including changes to the definition of "interest period," timing and frequency of determining rates with respect to each interest period and making payments of interest, rounding of amounts or tenors, and other administrative matters) that the calculation agent decides may be appropriate to reflect the adoption of such Benchmark Replacement in a manner substantially consistent with market practice (or, if the calculation agent decides that adoption of any portion of such market practice is not administratively feasible or if the calculation agent determines that no market practice for use of the Benchmark Replacement exists, in such other manner as the calculation agent determines is reasonably necessary).

"Benchmark Replacement Date" means the earliest to occur of the following events with respect to the then-current Benchmark:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)

in the case of clause (1) of the definition of "Benchmark Transition Event," the relevant Reference Time in respect of any determination;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)

in the case of clause (2) or (3) of the definition of "Benchmark Transition Event," the later of (a) the date of the public statement or publication of information referenced therein and (b) the date on which the administrator of the Benchmark permanently or indefinitely ceases to provide the Benchmark; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (3)

in the case of clause (4) of the definition of "Benchmark Transition Event," the date of the public statement or publication of information referenced therein.

For the avoidance of doubt, for purposes of the definitions of Benchmark Replacement Date and Benchmark Transition Event, references to the Benchmark also include any reference rate underlying the Benchmark (for example, if the Benchmark becomes Compounded SOFR, references to the Benchmark would include SOFR).

For the avoidance of doubt, if the event giving rise to the Benchmark Replacement Date occurs on the same day as, but earlier than, the Reference Time in respect of any determination, the Benchmark Replacement Date will be deemed to have occurred prior to the Reference Time for such determination.

"Benchmark Transition Event" means the occurrence of one or more of the following events with respect to the then-current Benchmark:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)

if the Benchmark is Three-Month Term SOFR we determine that the use of a forward-looking rate for a tenor of three months based on SOFR is not administratively feasible;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)

a public statement or publication of information by or on behalf of the administrator of the Benchmark announcing that such administrator has ceased or will cease to provide the Benchmark, permanently or indefinitely, provided that, at the time of such statement or publication, there is no successor administrator that will continue to provide the Benchmark;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (3)

a public statement or publication of information by the regulatory supervisor for the administrator of the Benchmark, the central bank for the currency of the Benchmark, an insolvency official with jurisdiction over the administrator for the Benchmark, a resolution authority with jurisdiction over the administrator for the Benchmark or a court or an entity with similar insolvency or resolution authority over the administrator for the Benchmark, which states that the administrator of the Benchmark has ceased or will cease to provide the Benchmark permanently or indefinitely, provided that, at the time of such statement or publication, there is no successor administrator that will continue to provide the Benchmark; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (4)

a public statement or publication of information by the regulatory supervisor for the administrator of the Benchmark announcing that the Benchmark is no longer representative.

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"Compounded SOFR" means the compounded average of SOFRs for the applicable Corresponding Tenor, with the rate, or methodology for this rate, and conventions for this rate being established by the calculation agent in accordance with:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)

the rate, or methodology for this rate, and conventions for this rate selected or recommended by the Relevant Governmental Body for determining compounded SOFR; provided that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)

if, and to the extent that, the calculation agent determines that Compounded SOFR cannot be determined in accordance with clause (1) above, then the rate, or methodology for this rate, and conventions for this rate that have been selected by the calculation agent giving due consideration to any industry-accepted market practice for U.S. dollar-denominated floating rate securities at such time.

For the avoidance of doubt, the calculation of Compounded SOFR shall exclude the Benchmark Replacement Adjustment (if applicable) and the spread of 241 basis points per annum.

"Corresponding Tenor" with respect to a Benchmark Replacement means a tenor (including overnight) having approximately the same length (disregarding business day adjustment) as the applicable tenor for the then-current Benchmark.

"Interpolated Benchmark" with respect to the Benchmark means the rate determined for the Corresponding Tenor by interpolating on a linear basis between: (1) the Benchmark for the longest period (for which the Benchmark is available) that is shorter than the Corresponding Tenor, and (2) the Benchmark for the shortest period (for which the Benchmark is available) that is longer than the Corresponding Tenor.

"ISDA" means the International Swaps and Derivatives Association, Inc. or any successor.

"ISDA Definitions" means the 2006 ISDA Definitions published by ISDA, as amended or supplemented from time to time, or any successor definitional booklet for interest rate derivatives published from time to time.

"ISDA Fallback Adjustment" means the spread adjustment (which may be a positive or negative value or zero) that would apply for derivatives transactions referencing the ISDA Definitions to be determined upon the occurrence of an index cessation event with respect to the Benchmark for the applicable tenor.

"ISDA Fallback Rate" means the rate that would apply for derivatives transactions referencing the ISDA Definitions to be effective upon the occurrence of an index cessation date with respect to the Benchmark for the applicable tenor excluding the applicable ISDA Fallback Adjustment.

"Unadjusted Benchmark Replacement" means the Benchmark Replacement excluding the Benchmark Replacement Adjustment.

The terms "FRBNY's Website," "Reference Time," "Relevant Governmental Body," "SOFR" and "Term SOFR" have the meanings set forth above under the heading "— Interest."

#### Determinations and Decisions
The calculation agent is expressly authorized to make certain determinations, decisions and elections under the terms of the Notes, including with respect to the use of Three-Month Term SOFR as the Benchmark for the floating rate period and under the benchmark transition provisions. Any determination, decision or election that may be made by the calculation agent under the terms of the Notes, including any determination with respect to a tenor, rate or adjustment or of the occurrence or non-occurrence of an event, circumstance or date and any decision to take or refrain from taking any action or any selection:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • will be conclusive and binding on the holders of the Notes and the trustee absent manifest error;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • if made by us as calculation agent, will be made in our sole discretion;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • if made by a calculation agent other than us, will be made after consultation with us, and the calculation agent will not make any such determination, decision or election to which we reasonably object; and

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • notwithstanding anything to the contrary in the indenture, shall become effective without consent from the holders of the Notes, the trustee or any other party.

#### Form, Denomination, Transfer, Exchange and Book-Entry Procedures
The Notes offered hereby will be issued only in fully registered form, without interest coupons, and in minimal denominations of $1,000 and integral multiples of $1,000 in excess thereof.

The Notes offered hereby will be evidenced by a global note which will be deposited with, or on behalf of, DTC, or any successor thereto, and registered in the name of Cede & Co., or Cede, as nominee of DTC. Except as set forth below, record ownership of the global note may be transferred, in whole or in part, only to another nominee of DTC or to a successor of DTC or its nominee.

The global note will not be registered in the name of any person, or exchanged for Notes that are registered in the name of any person, other than DTC or its nominee, unless one of the following occurs:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • DTC notifies us that it is unwilling or unable to continue acting as the depositary for the global note, or DTC has ceased to be a clearing agency registered under the Exchange Act, and in either case we fail to appoint a successor depositary; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • an event of default with respect to the Notes represented by the global note has occurred and is continuing.

In those circumstances, DTC will determine in whose names any securities issued in exchange for the global note will be registered. Any such Notes in certificated form will be issued in minimum denominations of $1,000 and multiples of $1,000 in excess thereof and may be transferred or exchanged only in such minimum denominations.

DTC or its nominee will be considered the sole owner and holder of the global note for all purposes, and as a result:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • you cannot get Notes registered in your name if they are represented by the global note;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • you cannot receive certificated (physical) notes in exchange for your beneficial interest in the global note;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • you will not be considered to be the owner or holder of the global note or any note it represents for any purpose; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • all payments on the global note will be made to DTC or its nominee.

The laws of some jurisdictions require that certain kinds of purchasers (for example, certain insurance companies) can only own securities in definitive (certificated) form. These laws may limit your ability to transfer your beneficial interests in the global note to these types of purchasers.

Only institutions (such as a securities broker or dealer) that have accounts with the DTC or its nominee (called "participants") and persons that may hold beneficial interests through participants (including through Euroclear Bank SA/NV or Clearstream Banking, société anonyme, as DTC participants) can own a beneficial interest in the global note. The only place where the ownership of beneficial interests in the global note will appear and the only way the transfer of those interests can be made will be on the records kept by DTC (for their participants' interests) and the records kept by those participants (for interests of persons held by participants on their behalf).

Secondary trading in bonds and notes of corporate issuers is generally settled in clearing-house (that is, next-day) funds. In contrast, beneficial interests in a global note usually trade in DTC's same-day funds settlement system, and settle in immediately available funds. We make no representations as to the effect that settlement in immediately available funds will have on trading activity in those beneficial interests.

We will make cash payments of interest on and principal of the global note to Cede, the nominee for DTC, as the registered owner of the global note. We will make these payments by wire transfer of immediately available funds on each payment date.

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You may exchange or transfer the Notes at the corporate trust office of the trustee for the Notes or at any other office or agency maintained by us for those purposes. We will not require payment of a service charge for any transfer or exchange of the Notes, but National Bank Holdings Corporation may require payment of a sum sufficient to cover any applicable tax or other governmental charge.

We have been informed that, with respect to any cash payment of interest on or principal of the global note, DTC's practice is to credit participants' accounts on the payment date with payments in amounts proportionate to their respective beneficial interests in the Notes represented by the global note as shown on DTC's records, unless DTC has reason to believe that it will not receive payment on that payment date. Payments by participants to owners of beneficial interests in Notes represented by the global note held through participants will be the responsibility of those participants, as is now the case with securities held for the accounts of customers registered in "street name."

We also understand that neither DTC nor Cede will consent or vote with respect to the Notes. We have been advised that under its usual procedures, DTC will mail an "omnibus proxy" to us as soon as possible after the record date. The omnibus proxy assigns Cede's consenting or voting rights to those participants to whose accounts the Notes are credited on the record date identified in a listing attached to the omnibus proxy.

Because DTC can only act on behalf of participants, who in turn act on behalf of indirect participants, the ability of a person having a beneficial interest in the principal amount represented by the global note to pledge the interest to persons or entities that do not participate in the DTC book-entry system, or otherwise take actions in respect of that interest, may be affected by the lack of a physical certificate evidencing its interest.

DTC has advised us that it will take any action permitted to be taken by a holder of notes (including the presentation of notes for exchange) only at the direction of one or more participants to whose account with DTC interests in the global note are credited and only in respect of such portion of the principal amount of the Notes represented by the global note as to which such participant has, or participants have, given such direction.

DTC has also advised us as follows: DTC is a limited purpose trust company organized under the laws of the State of New York, a "banking organization" within the meaning of the New York Banking Law, a member of the Federal Reserve System, a "clearing corporation" within the meaning of the Uniform Commercial Code, as amended, and a "clearing agency" registered pursuant to the provisions of Section 17A of the Exchange Act. DTC was created to hold securities for its participants and facilitate the clearance and settlement of securities transactions between participants through electronic book-entry changes in accounts of its participants. Participants include securities brokers and dealers, banks, trust companies and clearing corporations and may include certain other organizations. Certain of such participants (or their representatives), together with other entities, own DTC. Indirect access to the DTC system is available to other entities such as banks, brokers, dealers and trust companies that clear through or maintain a custodial relationship with a participant, either directly or indirectly. The rules applicable to DTC and its direct and indirect participants are on file with the SEC.

The policies and procedures of DTC, which may change periodically, will apply to payments, transfers, exchanges and other matters relating to beneficial interests in the global note. We and the trustee have no responsibility or liability for any aspect of DTC's or any participants' records relating to beneficial interests in the global note, including for payments made on the global note, and we and the trustee are not responsible for maintaining, supervising or reviewing any of those records.

#### Calculation Agent
We will appoint a calculation agent for the Notes prior to the commencement of the floating rate period and will keep a record of such appointment at our principal offices, which will be available to any holder of the Notes upon request. In addition, we or an affiliate of ours may assume the duties of the calculation agent. We will act as the initial calculation agent.

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#### The Trustee
The trustee for the holders of Notes issued under the Indenture is U.S. Bank Trust Company, National Association. If an event of default with respect to the Notes occurs, and is not cured, the trustee will be required to use the degree of care of a prudent person in the conduct of his or her own affairs in the exercise of its powers. The trustee will be under no obligation to exercise any of its rights or powers under the Indenture at the request of any holders of the Notes, unless they have offered to the trustee security or indemnity satisfactory to the trustee.

U.S. Bank Trust Company, National Association, in the future, may be the trustee under other indentures pursuant to which we issue debt. Pursuant to the Trust Indenture Act of 1939, if a default occurs with respect to the securities of any series, the trustee will be required to eliminate any conflicting interest as defined in the Trust Indenture Act or resign as trustee with respect to the securities of that series within 90 days of such default, unless such default were cured, duly waived or otherwise eliminated.

From time to time, we, and one or more of our subsidiaries, may maintain deposit accounts and conduct other banking transactions, including lending transactions, with U.S. Bank Trust Company, National Association in the ordinary course of business. Additionally, we maintain banking relationships with U.S. Bank Trust Company, National Association and its affiliates in the ordinary course of business.

#### Payment and Paying Agents
We will pay principal and interest on the Notes at the corporate trust office of the trustee or at the office of any paying agent that we may designate.

We will pay any interest on the Notes to the registered owner of the Notes at the close of business on the record date for the interest, except in the case of defaulted interest. Interest payable at maturity of the Notes will be paid to the registered holder to whom principal is payable. We may at any time designate additional paying agents or rescind the designation of any paying agent.

Any moneys deposited with the trustee or any paying agent, or then held by us in trust, for the payment of the principal of and interest on any Note that remains unclaimed for two years after the principal or interest has become due and payable will, at our request, be repaid to us, or (if then held by us) be discharged from such trust. After repayment to us, you are entitled to seek payment only from us as an unsecured general creditor.

#### Governing Law
The Indenture and the Notes are governed by and construed in accordance with the laws of the State of New York.

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#### CERTAIN ERISA CONSIDERATIONS
The following is a summary of certain considerations associated with the purchase and holding of the Notes by (1) employee benefit plans subject to Title I of the U.S. Employee Retirement Income Security Act of 1974, as amended, which we refer to as "ERISA", (2) plans, individual retirement accounts and other arrangements subject to Section 4975 of the Code, (3) plans subject to any federal, state, local, non-U.S. or other laws or regulations that are similar to Title I of ERISA or Section 4975 of the Code, which we collectively refer to as "Similar Laws", and (4) entities whose underlying assets are considered to include "plan assets" of such employee benefit plans, plans or arrangements (each of which we call a "Plan").

Each fiduciary of a Plan should consider the fiduciary standards of ERISA, to the extent applicable, or any applicable Similar Laws in the context of the Plan's particular circumstances before authorizing an investment in the Notes. Accordingly, among other factors, the fiduciary should consider whether the investment would satisfy the prudence and diversification requirements of ERISA, to the extent applicable, or any applicable Similar Laws and would be consistent with the documents and instruments governing the Plan.

In addition, Section 406 of ERISA and Section 4975 of the Code prohibit Plans subject to such provisions, which we call "ERISA Plans", from engaging in certain transactions involving "plan assets" with persons that are "parties in interest" under ERISA or "disqualified persons" under Section 4975 of the Code with respect to the ERISA Plan. A violation of these "prohibited transaction" rules may result in an excise tax for such persons or other liabilities under ERISA and/or Section 4975 of the Code, unless exemptive relief is available under an applicable statutory or administrative exemption. Employee benefit plans that are governmental plans (as defined in Section 3(32) of ERISA), certain church plans (as defined in Section 3(33) of ERISA) and non-U.S. plans (as described in Section 4(b)(4) of ERISA) are not subject to the requirements of ERISA or Section 4975 of the Code, but may be subject to Similar Laws.

The acquisition or holding of the Notes by or on behalf of a Plan with respect to which NBHC, the underwriter, the trustee or any of their respective affiliates are or become a party in interest or a disqualified person may constitute or result in prohibited transactions under ERISA or Section 4975 of the Code, unless the notes are acquired and held pursuant to and in accordance with an applicable exemption.

The U.S. Department of Labor has issued prohibited transaction class exemptions, or PTCEs, that may provide exemptive relief for direct or indirect prohibited transactions resulting from the purchase, holding or disposition of the Notes. Those class exemptions include:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • PTCE 96-23 — for certain transactions determined by in-house asset managers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • PTCE 95-60 — for certain transactions involving insurance company general accounts;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • PTCE 91-38 — for certain transactions involving bank collective investment funds;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • PTCE 90-1 — for certain transactions involving insurance company pooled accounts; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • PTCE 84-14 — for certain transactions determined by independent qualified professional asset managers.

In addition, ERISA Section 408(b)(17) and Section 4975(d)(20) of the Code provides an exemption for transactions between an ERISA Plan and a party in interest or disqualified person, provided that the party in interest or disqualified person is not a fiduciary (or an affiliate) who has or exercises any discretionary authority or control with respect to the investment of the ERISA Plan assets involved in the transaction or renders investment advice with respect to those assets, and is a party in interest or disqualified person solely by reason of being a service provider to the ERISA Plan or having a relationship to a service provider to the ERISA Plan and provided, further, that the ERISA Plan pays no more, nor receives no less, than adequate consideration in connection with the transaction (the so-called "service provider exemption"). No assurance can be made that any such exemptions will be available, or that all of the conditions of any such exemptions will be satisfied, with respect to transactions involving the Notes.

Because of the possibility that direct or indirect prohibited transactions or violations of Similar Laws could occur as a result of the purchase, holding or disposition of the Notes by a Plan, the Notes may not be purchased by any Plan, or any person investing the assets of any Plan, unless its purchase, holding and

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disposition of the Notes will not constitute or result in a non-exempt prohibited transaction under ERISA or Section 4975 of the Code or a violation of any Similar Laws.

Any purchaser or holder of the Notes or any interest in the Notes will be deemed to have represented by its purchase and holding of the Notes that either:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • it is not a Plan and is not purchasing the Notes or interest in the Notes on behalf of or with the assets of any Plan; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • its purchase, holding and disposition of the Notes or interest in the Notes will not constitute or result in a non-exempt prohibited transaction under ERISA or the Code or a violation of any Similar Laws.

Due to the complexity of these rules and the penalties imposed upon persons involved in non-exempt prohibited transactions, it is important that any person considering the purchase of the Notes on behalf of or with the assets of any Plan consult with its counsel regarding the consequences under ERISA, the Code and any applicable Similar Laws of the acquisition, ownership and disposition of the Notes, whether any exemption would be applicable, and whether all conditions of such exemption would be satisfied such that the acquisition and holding of the Notes by the Plan would be entitled to full exemptive relief thereunder.

Nothing herein will be construed as, and the sale of the Notes to a Plan is in no respect, a representation or advice by us or the underwriter (or any of our or its affiliates) as to whether any investment in the Notes would meet any or all of the relevant legal requirements with respect to investment by, or is appropriate for, Plans generally or any particular Plan. The foregoing discussion is merely a summary and should not be construed as legal advice or as complete in all relevant respects.

This summary is based upon the Code, ERISA and the regulations, and administrative and judicial interpretations thereof, all as of the date hereof and all of which are subject to change, possibly on a retroactive basis, and any such change or interpretation could affect the accuracy of the statements in this summary.

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#### MATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS

#### General
The following is a general summary of certain material U.S. federal income tax consequences of the ownership and disposition of the Notes applicable to U.S. and non-U.S. holders (as defined below) who acquire Notes pursuant to this offering at their original "issue price" (the first price at which a substantial amount of the notes is sold for cash (excluding sales to bond houses, brokers, or similar persons or organizations acting in the capacity of underwriters, placement agents or wholesalers)). This summary is based on the Internal Revenue Code of 1986, as amended, which we refer to as the "Code," U.S. Treasury regulations promulgated thereunder, judicial opinions, published positions of the IRS and other applicable authorities, each as of the date hereof. These authorities are subject to change or differing interpretations (possibly with retroactive effect), and any such change or interpretation could affect the accuracy of the statements and conclusions set forth herein.

This summary is for general information only and does not address all aspects of U.S. federal income taxation that may be relevant to a particular investor in light of that investor's individual circumstances, nor does it address the effects of any state, local or non-U.S. tax laws or any U.S. federal estate, gift, generation-skipping transfer or alternative minimum tax considerations. This discussion deals only with Notes held as "capital assets" within the meaning of Section 1221 of the Code, and it does not purport to be applicable to holders subject to special rules, such as banks, financial institutions, insurance companies, tax-exempt entities, grantor trusts, dealers in securities or currencies, traders in securities that elect the mark-to-market method of accounting for their securities holdings, U.S. holders whose "functional currency" is not the U.S. dollar, entities classified as partnerships for U.S. federal income tax purposes or other flow-through entities or arrangements (and investors therein), subchapter S corporations, retirement plans, individual retirement accounts or other tax-deferred accounts, controlled foreign corporations, real estate investment trusts, regulated investment companies or passive foreign investment companies for U.S. federal income tax purposes, certain former citizens or long-term residents of the United States subject to U.S. federal income tax as expatriates, persons holding the Notes through a "hybrid entity" or persons holding the notes as a hedge against currency risks, as a position in a "straddle" or as part of a "wash sale," "hedging," "conversion," "constructive sale" or "integrated" transaction for U.S. federal income tax purposes and persons required to accelerate the recognition of any item of gross income with respect to the Notes as a result of such income being recognized on an applicable financial statement. This summary does not address the tax considerations that may be relevant to subsequent purchasers of the Notes and does not address any tax consequences arising under the unearned income Medicare contribution tax pursuant to the Health Care and Education Reconciliation Act of 2010 nor any considerations with respect to any withholding required pursuant to the Foreign Account Tax Compliance Act of 2010 (including the Treasury regulations promulgated thereunder and intergovernmental agreements entered in connection therewith). This discussion assumes that the Notes will be treated as debt instruments for U.S. federal income tax purposes.

If a partnership or an entity or arrangement treated as a partnership for U.S. federal income tax purposes holds the Notes, the tax treatment of a partner in the partnership or an equity interest owner of such other entity will generally depend upon the status of the person and the activities of the partnership or other entity treated as a partnership. Thus, persons who are partners in a partnership or equity interest owners of another entity treated as a partnership holding any of the Notes should consult their own tax advisors. We have not sought and will not seek any ruling from the Internal Revenue Service (the "IRS") with respect to the statements made and the conclusions reached in this discussion, and there can be no assurance that the IRS will agree with such statements and conclusions.

 **THIS SUMMARY OF U.S. FEDERAL INCOME TAX ISSUES IS FOR GENERAL INFORMATION ONLY AND IS NOT INTENDED TO CONSTITUTE A COMPLETE DESCRIPTION OF ALL TAX CONSIDERATIONS FOR U.S. AND NON-U.S. HOLDERS RELATING TO THE OWNERSHIP AND DISPOSITION OF THE NOTES. PROSPECTIVE HOLDERS SHOULD CONSULT WITH THEIR TAX ADVISORS REGARDING THE TAX CONSEQUENCES TO THEM OF THE OWNERSHIP AND DISPOSITION OF THE NOTES, INCLUDING THE APPLICATION AND EFFECT OF ANY STATE, LOCAL, FOREIGN INCOME, ESTATE AND OTHER TAX LAWS OR ANY TAX TREATY.** 

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The terms of the Notes provide for payments by us in excess of stated interest or principal, or prior to their scheduled payment dates, under certain circumstances. The possibility of such payments may implicate special rules under U.S. Treasury regulations governing "contingent payment debt instruments." According to those U.S. Treasury regulations, the possibility that such payments of excess or accelerated amounts will be made will not affect the amount of income a holder recognizes in advance of the payment of such excess or accelerated amounts if there is only a remote chance as of the date the Notes are issued that such payments will be made. We intend to take the position that the likelihood that such payments will be made is remote within the meaning of the applicable U.S. Treasury regulations. Our position that these contingencies are remote is binding on a holder unless such holder discloses its contrary position to the IRS in the manner required by applicable U.S. Treasury regulations. Our position is not, however, binding on the IRS, and if the IRS were to challenge this position successfully, a holder might be required to, among other things, accrue interest income based on a projected payment schedule and comparable yield, which may be in excess of stated interest, and treat as ordinary income rather than capital gain any income realized on the taxable disposition of a Note. In the event a contingency described above occurs, it could affect the amount, timing and character of the income or loss recognized by a holder. Prospective holders should consult their own tax advisors regarding the tax consequences if the Notes were treated as contingent payment debt instruments. The remainder of this discussion assumes that the Notes will not be considered contingent payment debt instruments.

#### U.S. Holders of the Notes
As used in this discussion, the term "U.S. holder" means a holder that is a beneficial owner of a Note and that is, for U.S. federal income tax purposes:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • an individual who is a citizen or resident of the United States;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a corporation (or any other entity treated as a corporation for U.S. federal income tax purposes) created or organized in or under the laws of the United States, any state thereof or the District of Columbia (and certain non-U.S. entities taxed as U.S. corporations under specialized sections of the Code);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • an estate, the income of which is subject to U.S. federal income taxation regardless of its source; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a trust, if it (1) is subject to the primary supervision of a court within the United States and one or more U.S. persons have authority to control all substantial decisions of the trust or (2) has a valid election in effect under applicable U.S. Treasury regulations to be treated as a U.S. person for U.S. federal income tax purposes.

*Interest on the Notes*. It is expected, and this discussion assumes, that the Notes will be issued with less than a statutorily defined de minimis amount of original issue discount for U.S. federal income tax purposes. Accordingly, a U.S. holder will generally be required to recognize as ordinary income any interest paid or accrued on the Notes in accordance with its regular method of accounting for U.S. federal income tax purposes.

*Disposition of Notes*. Upon the sale, exchange, redemption, retirement or other taxable disposition of a Note, a U.S. holder generally will recognize taxable gain or loss equal to the difference, if any, between the amount realized on the sale, exchange, redemption, retirement or other taxable disposition (except to the extent of accrued but unpaid interest, which will be taxable as ordinary income) and such holder's adjusted tax basis in the note. A U.S. holder's adjusted tax basis in a note generally will be equal to the amount that such U.S. holder paid for the note. Any such gain or loss will be capital gain or loss, and will be long-term capital gain or loss if at the time of the disposition a U.S. holder has held the note for more than one year. Long-term capital gains of non-corporate U.S. holders are generally subject to tax at preferential rates. The deductibility of capital losses is subject to limitations.

*Information Reporting and Backup Withholding*. Information reporting requirements generally will apply in connection with payments of interest on the Notes to, and the proceeds from a sale, exchange or other disposition of the Notes by, non-corporate U.S. holders. Under the Code and applicable U.S. Treasury regulations, a U.S. holder may be subject to backup withholding with respect to any payments on the notes, or the proceeds of a sale, exchange, redemption, retirement or other taxable disposition of the notes,

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unless such U.S. holder (a) comes within certain exempt categories and, when required, demonstrates this fact in the manner required, or (b) within a reasonable period of time, provides a correct taxpayer identification number, certifies that it is not subject to backup withholding and otherwise complies with applicable requirements of the backup withholding rules. Backup withholding is not an additional tax. The amount of any backup withholding from a payment to a U.S. holder will generally be allowed as a credit against such U.S. holder's U.S. federal income tax liability and may entitle such U.S. holder to a refund, provided that the required information is timely furnished to the IRS.

#### Non-U.S. Holders of the Notes
As used in this discussion, the term "non-U.S. holder" means a beneficial owner of a Note that is not, for U.S. federal income tax purposes, a U.S. holder as defined above, nor an entity or arrangement that is treated as a partnership for U.S. federal income tax purposes.

*Interest on the Notes.* Subject to the discussions below under "— Backup Withholding, Information Reporting and Other Reporting Requirements," U.S. federal withholding tax will not apply to any payment of interest on a Note to a non-U.S. holder if the interest qualifies for the "portfolio interest exemption." This will be the case provided that the non-U.S. holder:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • does not actually or constructively own 10% or more of the total combined voting power of all classes of our stock entitled to vote;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • is not a controlled foreign corporation that is related directly or constructively to us through stock ownership;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • is not a bank that acquired the notes in consideration for an extension of credit made pursuant to a loan agreement entered into in the ordinary course of its trade or business; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • either (a) provides its name and address, and certifies, under penalties of perjury, that it is not a U.S. person as defined under the Code, which certification may be made on an IRS Form W-8BEN, W-8BEN-E or other appropriate form (and any applicable attachments), or (b) holds its notes through various foreign intermediaries and satisfies the certification requirements of applicable U.S. Treasury regulations.

Special certification and other rules apply to certain non-U.S. holders that are entities rather than individuals, particularly entities treated as partnerships for U.S. federal income tax purposes and certain other flow through entities, and to non-U.S. holders acting as (or holding notes through) intermediaries.

If the portfolio interest exemption does not apply, payments of interest will be subject to U.S. federal withholding tax at a 30% tax rate, unless the non-U.S. holder provides us with a properly executed: (1) IRS Form W-8BEN, W-8BEN-E or other appropriate form, claiming an exemption from or reduction in withholding under the benefit of an income tax treaty or (2) IRS Form W-8ECI, or successor form, stating that interest paid on the Note is not subject to withholding tax because it is effectively connected with its conduct of a trade or business in the United States.

If a non-U.S. holder is engaged in a trade or business in the United States and interest on a Note is effectively connected with the conduct of that trade or business (and, if required under an applicable income tax treaty, is attributable to a U.S. permanent establishment maintained by the non-U.S. holder), such non-U.S. holder (although exempt from U.S. federal withholding tax at the 30% tax rate) will be subject to U.S. federal income tax on that interest on a net income basis in the same manner as if the non-U.S. holder were a U.S. holder. In addition, if such non-U.S. holder is a foreign corporation, it may be subject to a branch profits tax equal to 30% of "effectively connected earnings and profits," as determined under the Code, for the taxable year. However, any branch profits tax that would otherwise apply may not apply, or may apply at a reduced rate, under an applicable income tax treaty.

*Disposition of Notes.* Subject to the discussions below under "— Backup Withholding, Information Reporting and Other Reporting Requirements," except with respect to accrued and unpaid interest, which will be treated as described above under "— Non-U.S. Holders of the Notes — Interest on the Notes," any gain realized on the sale, exchange, redemption, retirement or other taxable disposition of a Note by a non-U.S. holder generally will not be subject to U.S. federal income tax unless: (i) that gain is effectively connected

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with the conduct of a trade or business in the United States by the non-U.S. holder (and, if required under an applicable income tax treaty, is attributable to a U.S. permanent establishment maintained by the non-U.S. holder), in which case such person will be subject to U.S. federal income tax on a net income basis at the regular graduated U.S. federal income tax rates in the same manner as if such non-U.S. holder were a U.S. person, and if such non-U.S. holder is a corporation, such holder may be subject to the branch profits tax referred to above, unless the holder qualifies for a lower rate or an exemption from such branch profits tax under an applicable income tax treaty, or (ii) such person is an individual who is present in the United States for 183 days or more in the taxable year of that disposition and other conditions are met in which case such person will generally be subject to a U.S. federal income tax of 30% (or, if applicable, a lower income tax treaty rate) on such gain, which may be offset by U.S. source capital losses, if any, of the non-U.S. holder.

*Backup Withholding, Information Reporting and Other Reporting Requirements.* In general, backup withholding will not apply to a payment of interest on a Note to a non-U.S. holder, or to proceeds from the disposition of a note by a non-U.S. holder, in each case, if the holder certifies under penalties of perjury that it is not a U.S. person as defined under the Code and neither we nor our paying agent has actual knowledge to the contrary.

Information reporting and backup withholding generally are not required with respect to the amount of any proceeds from the sale, exchange, redemption, retirement or other taxable disposition of Notes by a non-U.S. holder outside the United States through a foreign office of a foreign broker that does not have certain specified connections to the United States unless the proceeds are transferred to an account maintained by the non-U.S. holder in the United States, the payment of proceeds or the confirmation of the sale is mailed to the non-U.S. holder at a United States address or the sale has some other specified connection to the United States. However, if a non-U.S. holder sells or otherwise disposes of Notes through a U.S. broker or the U.S. offices of a foreign broker, the broker will generally be required to report the amount of proceeds paid to the non-U.S. holder to the IRS and also to backup withhold on that amount unless such non-U.S. holder provides appropriate certification to the broker of its status as a non-U.S. person or otherwise establishes an exemption (and the payor does not have actual knowledge or reason to know that such holder is a U.S. person as defined under the Code). Information reporting will also apply if a non-U.S. holder sells notes through a foreign broker which derives more than a specified percentage of its income from U.S. sources or having certain other connections to the United States, unless such broker has documentary evidence in its records that such non-U.S. holder is a non-U.S. person and certain other conditions are met, or such non-U.S. holder otherwise establishes an exemption (and the payor does not have actual knowledge or reason to know that such holder is a U.S. person as defined under the Code).

Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules from a payment to a non-U.S. holder generally can be credited against the non-U.S. holder's U.S. federal income tax liability, if any, or refunded, provided that the required information is furnished to the IRS in a timely manner. Non-U.S. holders should consult their tax advisors regarding the application of the information reporting and backup withholding rules to them.

 **THE FOREGOING SUMMARY DOES NOT DISCUSS ALL ASPECTS OF U.S. FEDERAL INCOME TAXATION THAT MAY BE RELEVANT TO INVESTORS IN LIGHT OF THEIR PARTICULAR CIRCUMSTANCES AND INCOME TAX SITUATION. INVESTORS SHOULD CONSULT THEIR OWN TAX ADVISORS AS TO THE SPECIFIC TAX CONSEQUENCES THAT WOULD RESULT FROM THEIR OWNERSHIP AND DISPOSITION OF THE NOTES, INCLUDING THE APPLICATION AND EFFECT OF STATE, LOCAL AND OTHER TAX LAWS AND THE POSSIBLE EFFECTS OF CHANGES IN FEDERAL OR OTHER TAX LAWS.** 

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#### UNDERWRITING
We have entered into an underwriting agreement with Piper Sandler & Co. (the "underwriter") with respect to the Notes being offered pursuant to this prospectus supplement. Subject to certain conditions, the underwriter has agreed to purchase the aggregate principal amount of Notes set forth next to its name in the following table.

---

| | |
|:---|:---|
| **Underwriter**  | **Principal <br> Amount of Notes**  |
| Piper Sandler & Co.  | $150000000 |
| &nbsp;&nbsp;&nbsp; Total  | $150000000 |

---

The underwriting agreement provides that the obligations of the underwriter are subject to certain conditions precedent such as the receipt by the underwriter of officers' certificates and legal opinions and approval of certain legal matters by its counsel. The underwriting agreement provides that the underwriter has agreed to purchase all of the Notes offered hereby if any of them are purchased. We have agreed to indemnify the underwriter against certain liabilities, including liabilities under the Securities Act of 1933, as amended, and to contribute to payments that the underwriter may be required to make in respect of those liabilities.

The Notes will constitute a new class of securities with no established trading market. The underwriter has advised us that, following the completion of this offering, it intends to make a market in the Notes as permitted by applicable laws and regulations. However, the underwriter is not obligated to do so, and the underwriter may discontinue any market-making activities at any time without notice in its sole discretion. Accordingly, no assurance can be given as to the liquidity of the trading market for the Notes, that you will be able to sell any of the Notes held by you at a particular time or that the prices that you receive when you sell will be favorable.

The underwriter is offering the Notes offered hereby subject to its acceptance of such Notes from us and subject to prior sale. The underwriter reserves the right to withdraw, cancel or modify offers to the public and to reject orders in whole or in part.

#### Commission and Expenses
Notes sold by the underwriter to the public will be offered at the public offering price set forth on the cover of this prospectus supplement. If all of the Notes are not sold at their applicable initial offering prices, the underwriter may change the offering prices and the other selling terms. The offering of the Notes by the underwriter is subject to receipt and acceptance and subject to the underwriter's right to reject any order in whole or in part.

The following table shows the public offering price, the underwriting discounts and commissions that we are to pay the underwriter and the proceeds, before expenses, to us in connection with this offering (expressed as a percentage of the principal amount of the Notes offered hereby).

---

| | | |
|:---|:---|:---|
| | **Per Note**  | **Total**  |
| Public offering price<sup>(1)</sup>  | 100.00% | $150000000 |
| Underwriting discounts and commissions paid by us<sup>(2)</sup>  | 1.25% | $1875000 |
| Proceeds to us, before expenses  | 98.75% | $148125000 |

---

(1) Plus accrued interest, if any, from the original issue date.

(2) We have agreed to reimburse the underwriter up to $150,000 for certain expenses in connection with this offering. Such reimbursement is deemed underwriter compensation by the Financial Industry Regulatory Authority ("FINRA") under FINRA Rule 5110.

We estimate expenses payable by us in connection with this offering, other than, in each case, underwriting discounts and commissions, will be approximately $800,000.

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We expect that delivery of the Notes will be made against payment therefor on or about February 11, 2026, which will be the second business day following the date of pricing of the Notes, or "T+2."

#### No Listing
The Notes will not be listed on any securities exchange or included in any automated quotation system.

#### No Sale of Similar Securities
We have agreed with the underwriter that for a period from the date of the underwriting agreement through and including the closing date of the offering, we and our subsidiaries will not, without the prior consent of the underwriter, offer, sell, contract to sell or otherwise dispose of any debt securities issued or guaranteed by us or any of our subsidiaries.

#### Stabilization
In connection with this offering of the Notes, the underwriter may engage in overallotment, stabilizing transactions and syndicate covering transactions. Overallotment involves sales in excess of the offering size, which create a short position for the underwriter. Stabilizing transactions involve bids to purchase the Notes in the open market for the purpose of pegging, fixing or maintaining the price of the Notes. Syndicate covering transactions involve purchases of the Notes in the open market after the distribution has been completed in order to cover short positions. Stabilizing transactions and syndicate covering transactions may cause the price of the Notes to be higher than it would otherwise be in the absence of those transactions. If the underwriter engages in stabilizing or syndicate covering transactions, it may discontinue such activities at any time without notice.

Neither we nor the underwriter makes any representation or prediction as to the direction or magnitude of any effect that the transactions described above may have on the price of the Notes. In addition, neither we nor the underwriter makes any representation that the underwriter will engage in these transactions or that these transactions, once commenced, will not be discontinued without notice.

#### Other Activities and Relationships
The underwriter and certain of its affiliates are full service financial institutions engaged in various activities, which may include securities trading, commercial and investment banking, financial advisory, investment management, investment research, principal investment, hedging, financing and brokerage activities. The underwriter or its affiliates have, from time to time, performed, and may in the future perform, various commercial and investment banking and financial advisory services for us and our affiliates, for which they received or will receive customary fees and expenses.

In the ordinary course of their various business activities, the underwriter and certain of its affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers, and such investment and securities activities may involve securities or instruments issued by us and our affiliates. If the underwriter or its affiliates have a lending relationship with us, they routinely hedge their credit exposure to us consistent with their customary risk management policies. The underwriter and its affiliates may hedge such exposure by entering into transactions which consist of either the purchase of credit default swaps or the creation of short positions in our securities or the securities of our affiliates, including potentially the Notes offered hereby. Any such short positions could adversely affect future trading prices of the Notes offered hereby. The underwriter and its affiliates may also communicate independent investment recommendations, market color or trading ideas or publish or express independent research views in respect of such securities or instruments and may at any time hold, or recommend to clients that they acquire, long or short positions in such securities and instruments.

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#### LEGAL MATTERS
The validity of the Notes offered hereby will be passed upon for National Bank Holdings Corporation by Wachtell, Lipton, Rosen & Katz, New York, New York. Certain legal matters related to the offering will be passed upon for the underwriter by Otteson Shapiro LLP, Denver, Colorado.

#### EXPERTS
The consolidated financial statements of National Bank Holdings Corporation as of December 31, 2024 and 2023, and for each of the years in the three-year period ended December 31, 2024, and management's assessment of the effectiveness of internal control over financial reporting as of December 31, 2024 have been incorporated by reference herein in reliance upon the reports of KPMG LLP, independent registered public accounting firm, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing.

The consolidated financial statements of Vista Bancshares, Inc. and Subsidiaries as of and for the years ended December 31, 2024 and 2023 have been incorporated by reference herein and have been audited by Whitley Penn LLP, independent auditors, in reliance upon the report of such firm incorporated by reference herein, and upon the authority of such firm as experts in accounting and auditing.

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#### PROSPECTUS
![[MISSING IMAGE: lg_nationalbankholdings-4c.jpg]](lg_nationalbankholdings-4c.jpg)

### NATIONAL BANK HOLDINGS CORPORATION

### Debt Securities

### Common Stock

### Preferred Stock

### Depositary Shares

### Purchase Contracts

### Warrants

### Rights

### Units
We and/or one or more selling stockholders to be identified in the future may offer and sell from time to time, in one or more series, our debt securities, which may consist of notes, debentures, or other evidences of indebtedness, shares of our common stock or preferred stock, depositary shares, purchase contracts, warrants, rights and units comprised of two or more of these securities in any combination. The debt securities and preferred stock may be convertible into or exchangeable for other securities of ours. This prospectus provides you with a general description of these securities. Each time we and/or the selling stockholders offer any securities pursuant to this prospectus, we will provide you with a prospectus supplement, and, if necessary, a pricing supplement, that will describe the specific amounts, prices and terms of the securities being offered, and, if one or more of the selling stockholders are offering and selling securities, specific information about the selling stockholder(s). These supplements may also add, update or change information contained in this prospectus. To understand the terms of the securities offered, before deciding to invest you should carefully read this prospectus with the applicable supplements, which together provide the specific terms of the securities we are offering.

Our Class A common stock is listed on the New York Stock Exchange (the "*NYSE*") under the symbol "NBHC." We expect that any Class A common stock sold pursuant to a prospectus supplement will be listed on such exchange, subject to official notice of issuance. Any prospectus supplement will contain information, where applicable, as to any listing on the NYSE or any other securities exchange of the other securities covered by the prospectus supplement.

The securities may be sold directly to investors, through agents designated from time to time or to or through underwriters or dealers. See "Plan of Distribution" on page 38 of this prospectus. If any agents or underwriters are involved in the sale of any securities in respect of which this prospectus is being delivered, the names of such agents or underwriters and any applicable commissions or discounts will be set forth in the applicable prospectus supplement. The net proceeds we expect to receive from such sale also will be set forth in the applicable prospectus supplement.

 **Investing in our securities involves risks. See the section entitled "Risk Factors" contained on page [8](#tRIFA) of this prospectus and in the applicable prospectus supplement, and in the reports we file with the Securities and Exchange Commission that are incorporated by reference into this prospectus before deciding to invest in any of these securities.** 

 **These securities are not deposits or obligations of a bank or savings association and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.** 

This prospectus may be used to offer and sell securities only if accompanied by the prospectus supplement for those securities.

 **Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined that this prospectus or the accompanying prospectus supplement is accurate or complete. Any representation to the contrary is a criminal offense.** 

#### The date of this prospectus is February 5, 2026

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#### IMPORTANT NOTICE ABOUT INFORMATION PRESENTED IN THIS PROSPECTUS AND THE ACCOMPANYING PROSPECTUS SUPPLEMENT
We may provide information to you about the securities we are offering in three separate documents that progressively provide more detail:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • this prospectus, which provides general information, some of which may not apply to your securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the accompanying prospectus supplement, which describes the terms of the securities, some of which may not apply to your securities; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • if necessary, a free writing prospectus or pricing supplement, which describes the specific terms of your securities.

If the terms of your securities vary among the pricing supplement, the prospectus supplement and the accompanying prospectus, you should rely on the information in the following order of priority:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the free writing prospectus or pricing supplement, if any;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the prospectus supplement; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • this prospectus.

We include cross-references in this prospectus and the accompanying prospectus supplement to captions in these materials where you can find further related discussions. The following table of contents and the table of contents included in the accompanying prospectus supplement provide the pages on which these captions are located.

Unless indicated in the applicable prospectus supplement, we have not taken any action that would permit us to publicly sell these securities in any jurisdiction outside the United States. If you are an investor outside the United States, you should inform yourself about and comply with any restrictions as to the offering of the securities and the distribution of this prospectus.

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#### **TABLE OF CONTENTS**

---

| | |
|:---|:---|
| | **Page**  |
|  [IMPORTANT NOTICE ABOUT INFORMATION PRESENTED IN THIS PROSPECTUS AND <br> THE ACCOMPANYING PROSPECTUS SUPPLEMENT](#tINAI)  | [i](#tINAI) |
| [ABOUT THIS PROSPECTUS](#tATP)  | [1](#tATP) |
| [WHERE YOU CAN FIND MORE INFORMATION](#tWYCF)  | [2](#tWYCF) |
| [CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS](#tCNRF)  | [4](#tCNRF) |
| [PROSPECTUS SUMMARY](#tPRSU)  | [6](#tPRSU) |
| [RISK FACTORS](#tRIFA)  | [8](#tRIFA) |
| [NATIONAL BANK HOLDINGS CORPORATION](#tNBHC)  | [9](#tNBHC) |
| [USE OF PROCEEDS](#tUOP)  | [10](#tUOP) |
| [DESCRIPTION OF DEBT SECURITIES](#tDODS)  | [11](#tDODS) |
| [DESCRIPTION OF COMMON STOCK AND PREFERRED STOCK](#tDOCS)  | [21](#tDOCS) |
| [DESCRIPTION OF DEPOSITARY SHARES](#tDODS1)  | [24](#tDODS1) |
| [DESCRIPTION OF PURCHASE CONTRACTS](#tDOPC)  | [27](#tDOPC) |
| [DESCRIPTION OF WARRANTS](#tDOW)  | [28](#tDOW) |
| [DESCRIPTION OF RIGHTS](#tDOR)  | [30](#tDOR) |
| [DESCRIPTION OF UNITS](#tDOU)  | [32](#tDOU) |
| [DESCRIPTION OF GLOBAL SECURITIES](#tDOGS)  | [33](#tDOGS) |
| [SELLING STOCKHOLDERS](#tSEST)  | [35](#tSEST) |
| [PLAN OF DISTRIBUTION](#tPOD)  | [36](#tPOD) |
| [LEGAL MATTERS](#tLEMA)  | [39](#tLEMA) |
| [EXPERTS](#tEXP)  | [39](#tEXP) |

---

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#### ABOUT THIS PROSPECTUS
This prospectus is part of a registration statement that we filed with the Securities and Exchange Commission (the "*SEC*") as a "well-known seasoned issuer" as defined in Rule 405 under the Securities Act of 1933, as amended (the "*Securities Act*") using an automatic "shelf" registration process. Under this shelf registration process, we and/or the selling stockholders may from time to time offer and sell the securities described in this prospectus in one or more offerings, denominated in U.S. dollars or the equivalent in foreign currencies, currency units or composite currencies.

This prospectus provides you with a general description of the securities covered by it. Each time we and/or the selling stockholders offer these securities, we will provide a prospectus supplement that will contain specific information about the terms of the offer and include a discussion of any risk factors or other special considerations that apply to the securities. In addition, if one or more selling stockholders sells securities under this prospectus, the prospectus supplement will contain specific information about the selling stockholders. The prospectus supplement may also add, update or change information contained in this prospectus. You should read this prospectus, the applicable prospectus supplement and any pricing supplement together with the additional information described under the heading "Where You Can Find More Information." **No one may use this prospectus to sell any securities unless it is accompanied by a prospectus supplement.** If there is any inconsistency between the information in this prospectus and any prospectus supplement, you should rely on the information in the prospectus supplement.

All references in this prospectus to the "Company," "we," "us," "our" or similar references mean National Bank Holdings Corporation and its consolidated subsidiaries, unless otherwise expressly stated or the context otherwise requires.

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#### WHERE YOU CAN FIND MORE INFORMATION
We have filed with the SEC a registration statement under the Securities Act, which registers the offer and sale of the securities that we may offer under this prospectus. The registration statement, including the attached exhibits and schedules included or incorporated by reference in the registration statement, contains additional relevant information about us. The rules and regulations of the SEC allow us to omit certain information included in the registration statement from this prospectus. In addition, we file reports, proxy statements and other information with the SEC under the Securities Exchange Act of 1934, as amended (the "*Exchange Act*").

The SEC also maintains an Internet world wide web site that contains reports, proxy statements and other information about issuers like us who file electronically with the SEC. The address of that site is http://www.sec.gov.

The SEC allows us to "incorporate by reference" information into this prospectus. This means that we can disclose important information to you by referring you to another document that we file separately with the SEC. The information incorporated by reference is considered to be a part of this prospectus, except for any information that is superseded by information that is included directly in this document or in a more recent incorporated document.

This prospectus incorporates by reference the documents listed below that we have previously filed with the SEC (excluding any portion of these documents that has been furnished to and deemed not to be filed with the SEC).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • [Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed on February 25, 2025;](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000155837025001502/nbhc-20241231x10k.htm)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Quarterly Reports on Form 10-Q for quarters ended March 31, 2025, filed on [April 30, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000022/nbhc-20250331x10q.htm), June 30, 2025, filed on [August 5, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000044/nbhc-20250630x10q.htm), and September 30, 2025, filed on [October 29, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000063/nbhc-20250930x10q.htm);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Current Reports on Form 8-K, filed on [January 22, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000003/nbhc-20250122x8k.htm), [April 22, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000015/nbhc-20250422x8k.htm), [April 30, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000020/nbhc-20250430x8k.htm), [May 5, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000028/nbhc-20250430x8k.htm), [July 21, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000035/nbhc-20250721x8k.htm), [July 22, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000038/nbhc-20250722x8k.htm), [August 4, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000041/nbhc-20250804x8k.htm), [September 18, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000110465925091291/tm2526246d1_8k.htm), [October 21, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000054/nbhc-20251021x8k.htm), [October 29, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000061/nbhc-20251029x8k.htm), [December 23, 2025](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584125000070/nbhc-20251223x8k.htm), [January 7, 2026](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000110465926001549/tm261761d2_8k.htm), [January 27, 2026](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000147584126000003/nbhc-20260127x8k.htm) and [February 5, 2026](https://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000110465926010572/tm264842d1_8k.htm) (other than the portions of those documents deemed furnished and not filed);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • [The Definitive Proxy Statement on Schedule 14A filed with the SEC on March 28, 2025;](http://www.sec.gov/ix?doc=/Archives/edgar/data/1475841/000155837025003999/nbhc-20250430xdef14a.htm) and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • The description of our capital stock set forth in the Registration Statement on [Form 8-A, filed on September 17, 2012](http://www.sec.gov/Archives/edgar/data/1475841/000119312512394087/d412716d8a12b.htm), as such description has been updated and superseded by the description of our capital stock contained in [Exhibit 4.2](http://www.sec.gov/Archives/edgar/data/1475841/000155837020001499/ex-4d2.htm) to our Annual Report on Form 10-K for the year ended December 31, 2019, filed on February 26, 2020, including any amendments or reports filed for the purpose of updating such descriptions.

This prospectus also incorporates all future documents that we file with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus until the completion of the offering of the securities covered by this prospectus or until we terminate this offering. These documents include periodic reports, such as annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K (other than information furnished and deemed not to be filed in current reports on Form 8-K), as well as proxy statements.

The information incorporated by reference contains information about us and our business, financial condition and results of operations and is an important part of this prospectus.

You can obtain any of the documents incorporated by reference in this document through us, or from the SEC through the SEC's web site at www.sec.gov. Documents incorporated by reference are available from us without charge, excluding any exhibits to those documents, unless the exhibit is specifically incorporated by reference in those documents. You can obtain documents incorporated by reference in this prospectus by requesting them in writing or by telephone from us at the following address:

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**National Bank Holdings Corporation**

7800 East Orchard Road, Suite 300

Greenwood Village, Colorado 80111

Attention: Investor Relations

Telephone: (720) 554-6680

In addition, we maintain a corporate website, www.nationalbankholdings.com. We make available, through our website (by clicking "*Investor Relations*"), our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and any amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. This reference to our website is for the convenience of investors as required by the SEC and shall not be deemed to incorporate any information on the website into this registration statement.

Neither we nor any selling stockholder have authorized anyone to give any information or make any representation about us that is different from, or in addition to, those contained in this prospectus or in any of the materials that we have incorporated into this prospectus. If anyone does give you information of this sort, you should not rely on it. If you are in a jurisdiction where offers to sell, or solicitations of offers to purchase, the securities offered by this document are unlawful, or if you are a person to whom it is unlawful to direct these types of activities, then the offer presented in this document does not extend to you. The information contained in this document speaks only as of the date of this document unless the information specifically indicates that another date applies.

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#### CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
This prospectus, the applicable prospectus supplements and the other documents we incorporate by reference in this prospectus, contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements do not discuss historical facts but instead relate to expectations, beliefs, plans, predictions, forecasts, objectives, assumptions or future events or performance. Forward-looking statements are generally identified by words such as "anticipate," "believe," "can," "would," "should," "could," "may," "predict," "seek," "potential," "will," "estimate," "target," "plan," "project," "continuing," "ongoing," "expect," "intend," "goal," "focus," "maintains," "future," "ultimately," "likely," "anticipate," "ensure," "strategy," "objective," and similar words or phrases. These statements are only predictions and involve estimates, known and unknown risks, assumptions and uncertainties. We have based these statements largely on our current expectations and projections about future events and financial trends that we believe may affect our financial condition, liquidity, results of operations, business strategy and growth prospects. Forward-looking statements involve certain important risks, uncertainties and other factors, any of which could cause actual results to differ materially from those in such statements and, therefore, you are cautioned not to place undue reliance on such statements.

Factors that could cause actual results to differ from those discussed in the forward-looking statements include, but are not limited to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • business and economic conditions along with external events, both generally and in the financial services industry;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • susceptibility to credit risk and fluctuations in the value of real estate and other collateral securing a significant portion of our loan portfolio, including with regards to real estate acquired through foreclosure, and the accuracy of appraisals related to such real estate;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes impacting monetary supply and the businesses of our clients and counterparties, including levels of market interest rates, inflation, currency values, monetary, fiscal, and international trade policy, and the volatility of trading markets;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to maintain sufficient liquidity to meet the requirements of deposit withdrawals and other business needs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our desire to raise additional capital in connection with strategic growth initiatives and our ability to access the capital markets when desired or on favorable terms;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes in the fair value of our investment securities can fluctuate due to market conditions outside of our control;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our investments in financial technology companies and initiatives may subject us to material financial, reputational and strategic risks;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the allowance for credit losses and fair value adjustments may be insufficient to absorb losses in our loan portfolio;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any service interruptions, cyber incidents or other breaches relating to our technology systems, security systems or infrastructure or those of our third-party providers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the occurrence of fraud or other financial crimes within our business;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • competition from other financial services providers, including traditional financial institutions and financial technology companies, and the effects of disintermediation within the banking business including consolidation within the industry;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes to federal government lending programs like the Small Business Administration's Preferred Lender Program and the Federal Housing Administration's insurance programs, including the impact of changes in regulations, budget appropriations and a prolonged government shutdown on such programs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • impairment of our mortgage servicing rights, disruption in the secondary market for mortgage loans, declines in real estate values, or being required to repurchase mortgage loans or reimburse investors;

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • claims and litigation related to our fiduciary responsibilities in connection with our trust and wealth business;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to manage and execute our organic growth and acquisition strategies, including our ability to realize the expected benefits of our acquisition strategies;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • developments in technology, such as artificial intelligence, the success of our digital growth strategy, and our ability to incorporate innovative technologies in our business and provide products and services that satisfy our clients' expectations for convenience and security;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to integrate Vista Bank into our business may be more difficult, costly or time consuming than expected and we may fail to realize the anticipated benefits or cost savings of the merger;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • failure to obtain regulatory approvals or consummate attractive acquisitions or continue to increase organic loan growth would restrict our growth plans;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the accuracy of projected operating results for assets and businesses we acquire as well as our ability to drive organic loan growth to replace loans in our existing portfolio with comparable loans as loans are paid down;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to comply with and manage costs related to extensive and potentially expanding government regulation and supervision, including current and future regulations affecting bank holding companies and depository institutions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to execute our capital allocation strategy, including paying dividends or repurchasing shares, is subject to regulatory limitations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the application of any increased assessment rates imposed by the Federal Deposit Insurance Corporation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • claims or legal action brought against us by third parties or government agencies;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the loss of our executive officers and key personnel;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • changes to federal, state and local laws and regulations along with executive orders applicable to our business, including tax laws; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • other factors, risks, trends and uncertainties described elsewhere in our other filings with the SEC.

The forward-looking statements are made as of the date of this prospectus, and we undertake no obligation to update any forward-looking statement to reflect events or circumstances after the date on which the statement is made or to reflect the occurrence of unanticipated events or circumstances, except as required by applicable law.

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#### PROSPECTUS SUMMARY
This summary provides a general description of the securities we may offer and the common stock the selling stockholders may offer. This summary is not complete and does not contain all of the information that may be important to you. For a more complete understanding of us and the terms of the securities we and/or the selling stockholders may offer, you should read carefully this entire prospectus, including the "Risk Factors" section, the applicable prospectus supplement for the securities and the other documents we refer to and incorporate by reference. In particular, we incorporate important business and financial information into this prospectus by reference.

#### The Securities We and/or the Selling Stockholders May Offer
We and/or the selling stockholders may use this prospectus to offer securities from time to time in one or more offerings. A prospectus supplement, which we will provide each time we and/or the selling stockholders offer securities, will describe the amounts, prices and detailed terms of the securities and may describe risks associated with an investment in the securities in addition to those described in the "Risk Factors" section of this prospectus. We and/or the selling stockholders will also include in the prospectus supplement, where applicable, information about material United States federal income tax considerations relating to the securities. Terms used in this prospectus will have the meanings described in this prospectus unless otherwise specified.

We and/or the selling stockholders may sell the securities to or through underwriters, dealers or agents or directly to purchasers. We and/or the selling stockholders, as well as any agents acting on our behalf and/or on behalf of the selling stockholders, as applicable, reserve the sole right to accept or to reject in whole or in part any proposed purchase of such securities. Each prospectus supplement will set forth the names of any underwriters, dealers or agents involved in the sale of such securities described in that prospectus supplement and any applicable fee, commission or discount arrangements with them.

#### Debt Securities
Our debt securities may be senior or subordinated in priority of payment. We will provide a prospectus supplement that describes the ranking, whether senior or subordinated, the specific designation, the aggregate principal amount, the purchase price, the maturity, the redemption terms, the interest rate or manner of calculating the interest rate, the time of payment of interest, if any, the terms for any conversion or exchange, including the terms relating to the adjustment of any conversion or exchange mechanism, the listing, if any, on a securities exchange and any other specific terms of the debt securities.

#### Common Stock
We and/or the selling stockholders may sell our common stock. In a prospectus supplement, we and/or the selling stockholders will describe the aggregate number of shares offered and the offering price or prices of the shares.

#### Preferred Stock; Depositary Shares
We may sell shares of our preferred stock in one or more series. In a prospectus supplement, we will describe the specific designation, the aggregate number of shares offered, the dividend rate or manner of calculating the dividend rate, the dividend periods or manner of calculating the dividend periods, the ranking of the shares of the series with respect to dividends, liquidation and dissolution, the stated value of the shares of the series, the voting rights of the shares of the series, if any, whether and on what terms the shares of the series will be convertible or exchangeable, whether and on what terms we can redeem the shares of the series, whether we will offer depositary shares representing shares of the series and if so, the fraction or multiple of a share of preferred stock represented by each depositary share, whether we will list the preferred stock or depositary shares on a securities exchange and any other specific terms of the series of preferred stock.

#### Purchase Contracts
We may issue purchase contracts, including purchase contracts issued as part of a unit with one or more other securities, for the purchase or sale of our debt securities, preferred stock, depositary shares or

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common stock. The price of our debt securities or price per share of common stock, preferred stock or depositary shares may be fixed at the time the purchase contracts are issued or may be determined by reference to a specific formula contained in the purchase contracts. We may issue purchase contracts in such amounts and in as many distinct series as we wish.

#### Warrants
We may sell warrants to purchase our debt securities, shares of preferred stock or shares of our common stock. In a prospectus supplement, we will inform you of the exercise price and other specific terms of the warrants, including whether our or your obligations, if any, under any warrants may be satisfied by delivering or purchasing the underlying securities or their cash value.

#### Rights
We may distribute rights to the holders of our common stock or other securities to purchase a specified number of shares of our common stock or other securities that the holder owns as of the record date set by our board of directors. In a prospectus supplement, we will inform you of the exercise price and other specific terms of the rights.

#### Units
We may sell any combination of one or more of the other securities described in this prospectus together as units. In a prospectus supplement, we will describe the particular combination of securities constituting any units and any other specific terms of the units.

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#### RISK FACTORS
Investing in our securities involves risk. Before making an investment decision, you should carefully consider the risks described under "Risk Factors" in the applicable prospectus supplement and in our most recent Annual Report on Form 10-K, and in our updates to those Risk Factors in our Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, together with all of the other information appearing in this prospectus or incorporated by reference into this prospectus and any applicable prospectus supplement, in light of your particular investment objectives and financial circumstances. In addition to those risk factors, there may be additional risks and uncertainties of which management is not aware or on which management is not focused or that management deems immaterial. Our business, financial condition or results or operations could be materially adversely affected by any of these risks. The trading price of our securities could decline due to any of these risks, and you may lose all or part of your investment.

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#### NATIONAL BANK HOLDINGS CORPORATION
National Bank Holdings Corporation is a bank holding company that has elected financial holding company status and was incorporated in the State of Delaware in 2009. The Company is headquartered in Greenwood Village, Colorado, and its primary operations are conducted through its wholly owned subsidiaries, NBH Bank and Bank of Jackson Hole Trust. NBH Bank is a Colorado state-chartered bank and a member of the Federal Reserve System, and Bank of Jackson Hole Trust is a Wyoming state-chartered bank and a member of the Federal Reserve System. The Company provides a variety of banking products to both commercial and consumer clients through a network of over 90 banking centers, as of December 31, 2025, located primarily in Colorado, the greater Kansas City region, Utah, Wyoming, Texas, New Mexico and Idaho, as well as through online and mobile banking products and services.

Additional information about us and our subsidiaries is included in documents incorporated by reference in this prospectus. See "Where You Can Find More Information" on page 2 of this prospectus.

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#### USE OF PROCEEDS
We do not currently know the number or types of securities that ultimately will be sold pursuant to this prospectus or the prices at which such securities will be sold. Unless otherwise specified in a prospectus supplement relating to a specific issue of securities accompanying this prospectus, we intend to use the net proceeds to us from the sale of the securities for general corporate purposes. Our general corporate purposes may include, without limitation, financing acquisitions for bank and non-bank financial services companies that we believe are complementary to our business and consistent with our growth strategy, repurchasing our securities, extending credit to, or funding investments in, our subsidiaries and repaying, reducing or refinancing indebtedness.

The precise amounts and the timing of our use of the net proceeds will depend upon market conditions, our subsidiaries' funding requirements, the availability of other funds and other factors. Until we use the net proceeds in the manner described above, we may temporarily use them to make short-term investments.

We will not receive any proceeds from the sale of securities by the selling stockholders.

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#### DESCRIPTION OF DEBT SECURITIES
We may issue senior debt securities or subordinated debt securities. Senior debt securities will be issued under an indenture, referred to as the "senior indenture," between us and a senior indenture trustee to be named in the applicable prospectus supplement. Subordinated debt securities will be issued under a separate indenture, referred to as the "subordinated indenture," between us and a subordinated indenture trustee to be named in the applicable prospectus supplement. The senior indenture and the subordinated indenture are sometimes collectively referred to in this prospectus as the "indentures." The indentures will be subject to and governed by the Trust Indenture Act of 1939. A copy of the form of each of these indentures is included as an exhibit to the registration statement of which this prospectus is a part.

The following briefly describes the general terms and provisions of the debt securities which may be offered and the indentures governing them. The particular terms of the debt securities offered, and the extent, if any, to which these general provisions may apply to the debt securities so offered, will be described in more detail in the applicable prospectus supplement relating to those securities. The following descriptions of the indentures are not complete and are subject to, and are qualified in their entirety by reference to, all the provisions of the respective indentures.

#### General
The indentures permit us to issue the debt securities from time to time, without limitation as to aggregate principal amount, and in one or more series. The indentures also do not limit or otherwise restrict the amount of other indebtedness which we may incur or other securities which we or our subsidiaries may issue, including indebtedness which may rank senior to the debt securities. Nothing in the subordinated indenture prohibits the issuance of securities representing subordinated indebtedness that is senior or junior to the subordinated debt securities.

Unless we give you different information in the prospectus supplement, the senior debt securities will be unsubordinated obligations and will rank equally with all of our other unsecured and unsubordinated indebtedness. Payments on the subordinated debt securities will be subordinated to the prior payment in full of all of our senior debt, as described under "Description of Debt Securities-Subordination" and in the applicable prospectus supplement.

We may issue debt securities if the conditions contained in the applicable indenture are satisfied. These conditions include the adoption of resolutions by our board of directors that establish the terms of the debt securities being issued. Any resolution approving the issuance of any issue of debt securities will include the terms of that issue of debt securities, which may include:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the title and series designation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the aggregate principal amount and the limit, if any, on the aggregate principal amount or initial issue price of the debt securities which may be issued under the applicable indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the principal amount payable, whether at maturity or upon earlier acceleration;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the principal amount payable will be determined with reference to an index, formula or other method which may be based on one or more currencies, currency units, composite currencies, commodities, equity indices or other indices;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the debt securities will be issued as original issue discount securities (as defined below);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the date or dates on which the principal of the debt securities is payable;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any fixed or variable interest rate or rates per annum or the method or formula for determining an interest rate;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the date from which any interest will accrue;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any interest payment dates;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the debt securities are senior or subordinated, and if subordinated, the terms of the subordination;

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the price or prices at which the debt securities will be issued, which may be expressed as a percentage of the aggregate principal amount of those debt securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the stated maturity date;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the debt securities are to be issued in global form;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any sinking fund requirements;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any provisions for redemption, the redemption price and any remarketing arrangements;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the denominations of the securities or series of securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the debt securities are denominated or payable in United States dollars or a foreign currency or units of two or more foreign currencies;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any restrictions on the offer, sale and delivery of the debt securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the place or places where payments or deliveries on the debt securities will be made and may be presented for registration of transfer or exchange;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether any of the debt securities will be subject to defeasance in advance of the date for redemption or the stated maturity date;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the terms, if any, upon which the debt securities are convertible into other securities of ours or another issuer and the terms and conditions upon which any conversion will be effected, including the initial conversion price or rate, the conversion period and any other provisions in addition to or instead of those described in this prospectus;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a description of any documents or certificates that must be received prior to the issuance of any definitive securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether and under what circumstances additional amounts will be paid to non-U.S. citizens in connection with any tax, assessment or governmental charge and whether securities may be redeemed in lieu of paying such additional fees;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the identity of each security registrar or paying agent (if other than trustee);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any provisions granting special rights to securities holders upon the occurrence of specified events;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any deletions from, modifications of, or additions to any default events or covenants set forth in the form of indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the portion of the principal amount payable upon the declaration of acceleration of the maturity of any securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the date any bearer securities of or within the series and any temporary global security representing outstanding securities shall be dated, if other than date of original issuance; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any other terms of the debt securities which are not inconsistent with the provisions of the applicable indenture.

The debt securities may be issued as "original issue discount securities" which bear no interest or interest at a rate which at the time of issuance is below market rates and which will be sold at a substantial discount below their principal amount. If the maturity of any original issue discount security is accelerated, the amount payable to the holder of the security will be determined by the applicable prospectus supplement, the terms of the security and the relevant indenture, but may be an amount less than the amount payable at the maturity of the principal of that original issue discount security. Special federal income tax and other considerations relating to original issue discount securities will be described in the applicable prospectus supplement.

Under the indentures, the terms of the debt securities of any series may differ and we may, without the consent of the holders of the debt securities of any series, reopen a previous series of debt securities and issue additional debt securities of that series or establish additional terms of that series.

Please see the prospectus supplement or pricing supplement you have received or will receive for the terms of the specific debt securities we are offering.

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You should be aware that special United States federal income tax, accounting and other considerations may apply to the debt securities. The prospectus supplement relating to an issue of debt securities will describe these considerations.

#### Ranking of Debt Securities; Holding Company Structure
*Senior Debt Securities*. Payment of the principal of, premium, if any, and interest on senior debt securities will rank on a parity with all of our other unsecured and unsubordinated debt.

*Subordinated Debt Securities*. Payment of the principal of, premium, if any, and interest on subordinated debt securities will be junior in right of payment to the prior payment in full of all of our senior debt, including senior debt securities. We will state in the applicable prospectus supplement relating to any subordinated debt securities the subordination terms of the securities as well as the aggregate amount of outstanding debt, as of the most recent practicable date, that by its terms would be senior to those subordinated debt securities. We will also state in that prospectus supplement limitations, if any, on the issuance of additional senior debt.

*Holding Company Structure*. The debt securities will be our exclusive obligations. We are a holding company and substantially all of our consolidated assets are held by our subsidiaries. Accordingly, our cash flows and our ability to service our debt, including the debt securities, are dependent upon the results of operations of our subsidiaries and the distribution of funds by our subsidiaries to us. Various statutory and regulatory restrictions, however, limit directly or indirectly the amount of dividends our subsidiaries can pay, and also restrict certain subsidiaries from making investments in or loans to us.

Because we are a holding company, the debt securities will be effectively subordinated to all existing and future liabilities, including indebtedness, customer deposits, trade payables, guarantees and lease obligations, of our subsidiaries. Therefore, our rights and the rights of our creditors, including the holders of the debt securities, to participate in the assets of any subsidiary upon that subsidiary's liquidation or reorganization will be subject to the prior claims of the subsidiary's creditors and, if applicable, its depositors, except to the extent that we may ourselves be a creditor with recognized claims against the subsidiary, in which case our claims would still be effectively subordinate to any security interest in, or mortgages or other liens on, the assets of the subsidiary and would be subordinate to any indebtedness of the subsidiary senior to that held by us. If a receiver or conservator were appointed for NBH Bank, the Federal Deposit Insurance Act recognizes a priority in favor of the holders of withdrawable deposits (including the Federal Deposit Insurance Corporation as subrogee or transferee) over general creditors. Claims for customer deposits would have a priority over any claims that we may ourselves have as a creditor of NBH Bank. Unless otherwise specified in the applicable prospectus supplement, the indentures will not limit the amount of indebtedness or other liabilities that we and our subsidiaries may incur.

#### Registration and Transfer
Holders may present debt securities in registered form for transfer or exchange for other debt securities of the same series at the offices of the applicable indenture trustee according to the terms of the applicable indenture and the debt securities.

Unless otherwise indicated in the applicable prospectus supplement, the debt securities will be issued in fully registered form, and in denominations of $1,000 and any integral multiple thereof.

No service charge will be required for any transfer or exchange of the debt securities but we generally may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection with any transfer or exchange.

#### Payment and Place of Payment
We will pay or deliver principal and any premium and interest in the manner, at the places and subject to the restrictions set forth in the applicable indenture, the debt securities and the applicable prospectus supplement. However, at our option, we may pay any interest by check mailed or wire transfer to the holders of registered debt securities.

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#### Global Securities
Each indenture provides that we may issue debt securities in global form. If any series of debt securities is issued in global form, the prospectus supplement will describe any circumstances under which beneficial owners of interests in any of those global debt securities may exchange their interests for debt securities of that series and of like tenor and principal amount in any authorized form and denomination. See "Description of Global Securities."

#### Redemption and Repurchase
The debt securities of any series may be redeemable at our option, may be subject to mandatory redemption pursuant to a sinking fund or otherwise, or may be subject to repurchase by us at the option of the holders, in each case upon the terms, at the times and at the prices set forth in the applicable prospectus supplement and pricing supplement, if any.

#### Conversion or Exchange Rights
If debt securities may be convertible into or exchangeable for shares of our equity securities or other securities, the terms and conditions of conversion or exchange will be stated in the applicable prospectus supplement. The terms will include, among others, the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the conversion or exchange price;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the conversion or exchange period;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • provisions regarding the convertibility or exchangeability of the debt securities, including who may convert or exchange;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • events requiring adjustment to the conversion or exchange price;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • provisions affecting conversion or exchange in the event of our redemption of the debt securities; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any anti-dilution provisions, if applicable.

#### Absence of Limitation on Indebtedness and Liens; Absence of Event Risk Protection
Unless otherwise stated in the prospectus supplement relating to a series of debt securities, the indentures will not limit the amount of indebtedness, guarantees or other liabilities that we and our subsidiaries may incur and will not prohibit us or our subsidiaries from creating or assuming liens on our properties, including the capital stock of our subsidiaries. Unless otherwise provided in the related prospectus supplement, the indentures will not require us to maintain any financial ratios or specified levels of net worth, revenues, income, cash flow or liquidity, and will not contain provisions which would give holders of the debt securities the right to require us to repurchase their debt securities in the event we undergo a takeover, recapitalization or similar restructuring or change in control.

#### Events of Default
Unless otherwise indicated in the applicable prospectus supplement, the following are events of default under the senior indenture with respect to the senior debt securities and under the subordinated indenture with respect to the subordinated debt securities:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • default in the payment of any principal or premium or make-whole amount, if any, on the debt securities when due;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • default in the payment of any interest or additional amounts on the debt securities, or of any coupon pertaining thereto, when due, which continues for 30 days;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • default in the deposit of any sinking fund payment on the debt securities when due;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • default in the performance or breach of any other obligation contained in the applicable indenture for the benefit of that series of debt securities (other than defaults or breaches otherwise specifically addressed), which continues for 90 days after written notice of the default or breach;

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • specified events in bankruptcy or insolvency; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any other event of default provided with respect to the debt securities of any series.

Unless otherwise indicated in the applicable prospectus supplement, if an event of default occurs and is continuing for any series of senior debt securities, unless the principal amount of all senior debt securities of that particular series has already become due and payable, the indenture trustee or the holders of not less than 25% in aggregate principal amount or, under certain circumstances, issue price of the outstanding senior debt securities of that series may declare all amounts, or any lesser amount provided for in the senior debt securities of that series, to be immediately due and payable.

Unless otherwise indicated in the applicable prospectus supplement, if an event of default described under the fifth bullet point above shall have occurred and be continuing, unless the principal amount of all the subordinated debt securities of a particular series has already become due and payable, the indenture trustee or the holders of not less than 25% in aggregate principal amount or, under certain circumstances, issue price of the subordinated debt securities of that series may declare all amounts or any lesser amount provided for in the subordinated debt securities of that series to be immediately due and payable.

At any time after the applicable indenture trustee or the holders have accelerated a series of debt securities, but before the applicable indenture trustee has obtained a judgment or decree for payment of money due, the holders of a majority in aggregate principal amount of outstanding debt securities of that series may rescind and annul that acceleration and its consequences, provided that all payments and/or deliveries due, other than those due as a result of acceleration, have been made and all events of default have been remedied or waived.

The holders of a majority in principal amount or aggregate issue price of the outstanding debt securities of any series may waive any default with respect to that series, except a default:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • in the payment of any amounts due and payable or deliverable under the debt securities of that series; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • in an obligation contained in, or a provision of, an indenture which cannot be modified under the terms of that indenture without the consent of each holder of each series of debt securities affected.

The holders of a majority in principal amount of the outstanding debt securities of a series may direct the time, method and place of conducting any proceeding for any remedy available to the applicable indenture trustee or exercising any trust or power conferred on the indenture trustee with respect to debt securities of that series, provided that any direction is not in conflict with any rule of law or the applicable indenture and the trustee may take other actions, other than those that might lead to personal liability, not inconsistent with the direction. Subject to the provisions of the applicable indenture relating to the duties of the indenture trustee, before proceeding to exercise any right or power under the indenture at the direction of the holders, the indenture trustee is entitled to receive from those holders security or indemnity reasonably satisfactory to it against the costs, expenses and liabilities which it might incur in complying with any direction.

A holder of any debt security of any series will have the right to institute a proceeding with respect to the applicable indenture or for any remedy under the indenture, if:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • that holder previously gives to the indenture trustee written notice of a continuing event of default with respect to debt securities of that series;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the holders of not less than 25% in principal amount of the outstanding securities of that series have made written request and offered the indenture trustee indemnity satisfactory to the indenture trustee to institute that proceeding as indenture trustee;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the indenture trustee has not received from the holders of a majority in principal amount of the outstanding debt securities of that series a direction inconsistent with the request; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the indenture trustee fails to institute the proceeding within 60 days.

However, the holder of any debt security or coupon has the right to receive payment of the principal of (and premium or make-whole amount, if any) and interest on, and any additional amounts in respect of,

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such debt security or payment of such coupon on the respective due dates (or, in the case of redemption, on the redemption date) and to institute suit for the enforcement of any such payment.

We are required to furnish to the indenture trustees annually a statement as to the performance of our obligations under the indentures and as to any default in that performance of which we are aware.

#### Modification and Waiver
Unless otherwise indicated in the applicable prospectus supplement, National Bank Holdings Corporation and the applicable indenture trustee may amend and modify each indenture or debt securities under that indenture with the consent of holders of at least a majority in principal amount of each series of all outstanding debt securities then outstanding under the indenture affected. However, without the consent of each holder of any debt security issued under the applicable indenture, we may not amend or modify that indenture to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • change the stated maturity date of the principal of (or premium or make-whole amount, if any, on), or any installment of principal or interest on, any debt security issued under that indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • reduce the principal amount of or any make-whole amount, the rate of interest on or any additional amounts payable in respect thereof, or any premium payable upon the redemption of any debt security issued under that indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • reduce the amount of principal of an original issue discount security or make-whole amount, if any, issued under that indenture payable upon acceleration of its maturity or provable in bankruptcy;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • change the place or currency of payment of principal or any premium or any make-whole amount or interest on any debt security issued under that indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • impair the right to institute suit for the enforcement of any payment or delivery on or with respect to any debt security issued under that indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • reduce the percentage in principal amount of debt securities of any series issued under that indenture, the consent of whose holders is required to modify or amend the indenture or to waive compliance with certain provisions of the indenture; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • make any change that adversely affects the right to convert or exchange any security or decrease the conversion/exchange rate or increase the conversion/exchange price.

The holders of at least a majority in principal amount of the outstanding debt securities of any series issued under that indenture may, with respect to that series, waive past defaults under the indenture, except as described under "— Events of Default."

Unless otherwise indicated in the applicable prospectus supplement, we and the applicable indenture trustee may also amend and modify each indenture without the consent of any holder for any of the following purposes:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to evidence the succession of another person to National Bank Holdings Corporation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to add to our covenants for the benefit of the holders of all or any series of debt securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to add events of default for the benefit of the holders of all or any series of debt securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to add or change any provisions of the indentures to facilitate the issuance of bearer securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to change or eliminate any of the provisions of the applicable indenture in respect of any series of debt securities, so long as any such change or elimination will become effective only in respect of any series of securities when there is no outstanding security of that series which is entitled to the benefit of that provision;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to establish the form or terms of debt securities of any series;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to evidence and provide for the acceptance of appointment by a successor indenture trustee;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to cure any ambiguity, to correct or supplement any provision in the applicable indenture, or to make any other provisions with respect to matters or questions arising under that indenture, so long as

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the interests of holders of debt securities of any series are not adversely affected in any material respect by the actions taken to cure, correct or supplement a provision in an indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to secure securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to close the indenture with respect to the authentication and delivery of additional series of securities or to qualify or maintain qualifications of the applicable indenture under the Trust Indenture Act; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to supplement any of the provisions of an indenture as is necessary to permit or facilitate the defeasance or discharge of any series of securities under specified provisions of the indenture, provided that any such action shall not adversely affect the interests of the holders of securities of such series or any other series of securities under the indenture in any material respect.

#### Voting
The indentures contain provisions for convening meetings of the holders of debt securities of a series. A meeting will be permitted to be called at any time by the applicable trustee, and also, upon request, by us or the holders of at least 25% in principal amount of the outstanding debt securities of such series, in any such case upon notice given as provided in such indenture. Except for any consent that must be given by the holder of each debt security affected by the modifications and amendments of an indenture described above, any resolution presented at a meeting or adjourned meeting duly reconvened at which a quorum is present may be adopted by the affirmative vote of the holders of a majority of the aggregate principal amount of the outstanding debt securities of that series represented at such meeting.

Notwithstanding the preceding paragraph, except as referred to above, any resolution relating to a request, demand, authorization, direction, notice, consent, waiver or other action that may be made, given or taken by the holders of a specified percentage, which is less than a majority, of the aggregate principal amount of the outstanding debt securities of a series may be adopted at a meeting or adjourned meeting duly reconvened at which a quorum is present by the affirmative vote of such specified percentage.

Any resolution passed or decision taken at any properly held meeting of holders of debt securities of any series will be binding on all holders of such series. The quorum at any meeting called to adopt a resolution, and at any reconvened meeting, will be persons holding or representing a majority in principal amount of the outstanding debt securities of a series. However, if any action is to be taken relating to a consent or waiver which may be given by the holders of at least a specified percentage in principal amount of the outstanding debt securities of a series, the persons holding such percentage will constitute a quorum.

Notwithstanding the foregoing provisions, the indentures provide that if any action is to be taken at a meeting with respect to any request, demand, authorization, direction, notice, consent, waiver or other action that such indenture expressly provides may be made, given or taken by the holders of a specified percentage in principal amount of all outstanding debt securities affected by such action, or of the holders of such series and one or more additional series:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • there shall be no minimum quorum requirement for such meeting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the principal amount of the outstanding debt securities of such series that vote in favor of such request, demand, authorization, direction, notice, consent, waiver or other action shall be taken into account in determining whether such request, demand, authorization, direction, notice, consent, waiver or other action has been made, given or taken under such indenture.

#### Consolidation, Merger and Sale of Assets
Unless otherwise indicated in the applicable prospectus supplement, we may consolidate or merge with or into any other person, and we may sell, lease or convey all or substantially all of our assets to any person, provided that the resulting entity, if other than National Bank Holdings Corporation, is an entity organized and existing under the laws of the United States of America or any U.S. state or the District of Columbia and assumes all of our obligations to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)

pay or deliver the principal and any premium or make-whole amount, if any, and any interest on, the debt securities;

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)

perform and observe all of our other obligations under the indentures and supplemental indentures; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (3)

we are not, or any successor entity, as the case may be, is not, immediately after any consolidation or merger, in default under the indenture.

The indentures do not provide for any right of acceleration in the event of a consolidation, merger, sale of all or substantially all of the assets, recapitalization or change in our stock ownership. In addition, the indentures do not contain any provision which would protect the holders of debt securities against a sudden and dramatic decline in credit quality resulting from takeovers, recapitalizations or similar restructurings.

#### International Offering
If specified in the applicable prospectus supplement, we may issue debt securities outside the United States. Those debt securities will be described in the applicable prospectus supplement. In connection with any offering outside the United States, we will designate paying agents, registrars or other agents with respect to the debt securities, as specified in the applicable prospectus supplement.

We will describe in the applicable prospectus supplement whether our debt securities issued outside the United States: (1) may be subject to certain selling restrictions; (2) may be listed on one or more foreign stock exchanges; and (3) may have special United States tax and other considerations applicable to an offering outside the United States.

#### Defeasance
We may terminate or "defease" our obligations under the applicable indenture with respect to the debt securities of any series by taking the following steps:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)

depositing irrevocably with the indenture trustee an amount, which through the payment of interest, principal or premium, if any, will provide an amount sufficient to pay the entire amount of the debt securities:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • in the case of debt securities denominated in U.S. dollars, U.S. dollars or U.S. government obligations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • in the case of debt securities denominated in a foreign currency, of money in that foreign currency or foreign government obligations of the foreign government or governments issuing that foreign currency; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a combination of money and U.S. government obligations or foreign government obligations, as applicable;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)

delivering:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • an opinion of independent counsel that the holders of the debt securities of that series will have no federal income tax consequences as a result of that deposit and termination;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • an opinion of independent counsel that registration is not required under the Investment Company Act of 1940;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • an opinion of counsel as to certain other matters;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • officers' certificates and opinion of counsel certifying as to compliance with the indenture and other matters; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (3)

paying all other amounts due under the indenture.

Further, the defeasance cannot cause an event of default under the indenture or any other material agreement or instrument and no event of default under the indenture can exist at the time the defeasance occurs.

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#### Subordination
The subordinated debt securities will be subordinated in right of payment to all "senior debt," as defined in the subordinated indenture. In certain circumstances relating to our liquidation, dissolution, receivership, reorganization, insolvency or similar proceedings:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the holders of all senior debt will first be entitled to receive payment in full before the holders of the subordinated debt securities will be entitled to receive any payment on the subordinated debt securities; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • until the senior debt is paid in full, any distributions that the holders of subordinated debt would be entitled to shall be made to holders of senior debt, except that holders of subordinated debt may receive securities that are subordinated to senior debt to at least the same extent as the senior debt.

In addition, we may make no payment on the subordinated debt securities in the event:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • there is an event of default with respect to any senior debt which permits the holders of that senior debt to accelerate the maturity of the senior debt; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the default is the subject of judicial proceedings or we receive notice of the default from an authorized person under the subordinated indenture.

By reason of this subordination in favor of the holders of senior debt, in the event of an insolvency our creditors who are not holders of senior debt or the subordinated debt securities may recover less, proportionately, than holders of senior debt and may recover more proportionately, than holders of the subordinated debt securities. Unless otherwise specified in the prospectus supplement relating to the particular series of subordinated debt securities, "senior debt" is defined in the subordinated indenture as the principal, premium, if any, unpaid interest (including interest accruing on or after the filing of any petition in bankruptcy or for reorganization relating to National Bank Holdings Corporation whether or not a claim for post-filing interest is allowed in such proceeding), fees, charges, expenses, reimbursement and indemnification obligations, and all other amounts payable under or in respect of the following indebtedness of National Bank Holdings Corporation for money borrowed, whether any such indebtedness exists as of the date of the indenture or is created, incurred, assumed or guaranteed after such date:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (i)

any debt (a) for money borrowed by National Bank Holdings Corporation, (b) evidenced by a bond, note, debenture, or similar instrument (including purchase money obligations) given in connection with the acquisition of any business, property or assets, whether by purchase, merger, consolidation or otherwise, but shall not include any account payable or other obligation created or assumed in the ordinary course of business in connection with the obtaining of materials or services, or (c) which is a direct or indirect obligation which arises as a result of banker's acceptances or bank letters of credit issued to secure obligations of National Bank Holdings Corporation, or to secure the payment of revenue bonds issued for the benefit of National Bank Holdings Corporation whether contingent or otherwise;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (ii)

any debt of others described in the preceding clause (i) which National Bank Holdings Corporation has guaranteed or for which it is otherwise liable;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (iii)

the obligation of National Bank Holdings Corporation as lessee under any lease of property which is reflected on National Bank Holdings Corporation's balance sheet as a capitalized lease; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (iv)

any deferral, amendment, renewal, extension, supplement or refunding of any liability of the kind described in any of the preceding clauses (i), (ii) and (iii).

"Senior debt" does not include (1) any such indebtedness, obligation or liability referred to in clauses (i) through (iv) above as to which, in the instrument creating or evidencing the same or pursuant to which the same is outstanding, it is provided that such indebtedness, obligation or liability is not superior in right of payment to the subordinated debt securities, or ranks pari passu with the subordinated debt securities, (2) any such indebtedness, obligation or liability which is subordinated to indebtedness of National Bank Holdings Corporation to substantially the same extent as or to a greater extent than the subordinated debt

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securities are subordinated, (3) any indebtedness to a subsidiary of National Bank Holdings Corporation and (4) the subordinated debt securities.

The subordinated indenture does not limit or prohibit the incurrence of additional senior debt, which may include indebtedness that is senior to the subordinated debt securities, but subordinate to our other obligations. Any prospectus supplement relating to a particular series of subordinated debt securities will set forth the aggregate amount of our indebtedness senior to the subordinated debt securities as of a recent practicable date.

The prospectus supplement may further describe the provisions, if any, which may apply to the subordination of the subordinated debt securities of a particular series.

#### Restrictive Covenants
The subordinated indenture does not contain any significant restrictive covenants. The prospectus supplement relating to a series of subordinated debt securities may describe certain restrictive covenants, if any, to which we may be bound under the subordinated indenture.

#### Governing Law
Unless indicated otherwise in the applicable prospectus supplement, the indentures and the debt securities will be governed by, and construed in accordance with, the laws of the State of New York.

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#### DESCRIPTION OF COMMON STOCK AND PREFERRED STOCK
In this section we describe certain features and rights of our capital stock. This discussion does not purport to be a complete description of these rights and may not contain all of the information regarding our capital stock that is important to you. These rights can be determined in full only by reference to federal and state banking laws and regulations, the Delaware General Corporation Law (the "*DGCL*"), our Second Amended and Restated Certificate of Incorporation (our "*certificate of incorporation*") and our Second Amended and Restated Bylaws (our "*bylaws*"), which are incorporated by reference as exhibits to the registration statement of which this prospectus forms a part Our certificate of incorporation authorizes us to issue 200,000,000 shares of Class A common stock, $0.01 par value per share, or our "*Class A common stock*," 200,000,000 shares of Class B non-voting common stock, $0.01 par value per share, or our "*Class B non-voting common stock*" and together with Class A common stock, our "*common stock*", and 50,000,000 shares of preferred stock, $0.01 par value per share, or "*preferred stock*."

#### Common Stock

#### Class A Common Stock and Class B Non-Voting Common Stock
We may issue, either separately or together with other securities, shares of common stock. Upon our receipt of the full specified purchase price, the common stock issued will be fully paid and nonassessable. A prospectus supplement relating to an offering of common stock, or other securities convertible or exchangeable for, or exercisable into, common stock, will describe the relevant offering terms, including the number of shares offered, the initial offering price, and market price and dividend information, as well as, if applicable, information on other related securities.

As of January 30, 2026, there were 45,051,880 outstanding shares of Class A common stock, excluding 988,788 shares of restricted Class A common stock issued but not yet vested, and no shares of Class B non-voting common stock outstanding.

Our certificate of incorporation provides that, except with respect to voting rights and conversion rights, the Class A common stock and Class B non-voting common stock will be treated equally and identically.

*Voting Power*. Except as otherwise required by law or as otherwise provided in any certificate of designation for any series of preferred stock, the holders of Class A common stock possess all voting power for the election of our directors and all other matters requiring stockholder action, except with respect to amendments to our certificate of incorporation that alter or change the powers, preferences, rights or other terms of any outstanding preferred stock if the holders of such affected series of preferred stock are entitled to vote on such an amendment. Holders of Class A common stock are entitled to one vote per share on matters to be voted on by stockholders. Holders of Class B non-voting common stock have no voting power, and have no right to participate in any meeting of stockholders or to have notice thereof, except as required by applicable law and except that any action that would significantly and adversely affect the rights of the Class B non-voting common stock with respect to the modification of the terms of the securities or dissolution will require the approval of the Class B non-voting common stock voting separately as a class. Except as otherwise provided by law, our certificate of incorporation or our bylaws, or in respect of the election of directors, all matters to be voted on by our stockholders must be approved by a majority of the shares present in person or by proxy at the meeting and entitled to vote on the subject matter. In the case of an election of directors, where a quorum is present a plurality of the votes cast shall be sufficient to elect each director.

*Conversion of Class B Non-Voting Common Stock*. Each share of Class B non-voting common stock is convertible into a share of Class A common stock at the option of the holder. However, each share of Class B non-voting common stock is not convertible in the hands of the initial holder and is only convertible at the time it is transferred to a third party unaffiliated with such initial holder, subject to the transfer restrictions described in the next sentence, if and only to the extent such conversion would not, after giving effect to such conversion, cause the transferee (together with such transferee's related persons and any persons with which such transferee is acting in concert) to own, control or have the power to vote shares in excess of the ownership limit described below. Shares of Class B non-voting common stock may only be transferred

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through one or more of the following alternatives: (1) to an affiliate of a holder or to the Company, (2) in a widely dispersed public offering, (3) in a private sale in which no purchaser would acquire Class A common stock and/or Class B non-voting common stock in an amount that, after the conversion of such Class B non-voting common stock into Class A common stock, is (or represents) 2% or more of a class of our voting securities or (4) to a purchaser acquiring majority control of the Company notwithstanding such transfer.

*Dividends*. Holders of Class A common stock and Class B non-voting common stock are equally entitled to receive such dividends, if any, as may be declared from time to time by our board of directors in its discretion out of funds legally available therefor. In no event will any stock dividends or stock splits or combinations of stock be declared or made on Class A common stock or Class B non-voting common stock unless shares of Class A common stock and Class B non-voting common stock at the time outstanding are treated equally and identically, provided that, in the event of a dividend of common stock, shares of Class B non-voting common stock shall only be entitled to receive shares of Class B non-voting common stock and shares of Class A common stock shall only be entitled to receive shares of Class A common stock.

*Liquidation Distribution*. In the event of the voluntary or involuntary liquidation, dissolution, distribution of assets or winding up of the Company, the holders of our Class A common stock and Class B non-voting common stock are entitled to receive an equal amount per share of all the assets of the Company of whatever kind available for distribution to holders of Class A common stock and Class B non-voting common stock, after the rights of the holders of the preferred stock have been satisfied.

*Board of Directors*. Each member of our board of directors is elected annually and serves for a one-year term. There is no cumulative voting with respect to the election of directors, with the result that the holders of more than 50% of the shares eligible to vote for the election of directors can elect all of the directors.

*Preemptive or Other Rights*. Our stockholders have no conversion, preemptive or other subscription rights (other than the right of holders of shares of Class B non-voting common stock to convert such shares into shares of Class A common stock as described in "— Conversion of Class B Non-Voting Common Stock" above) and there are no sinking fund or redemption provisions applicable to our common stock.

*No Action by Written Consent*. Our certificate of incorporation provides that, subject to the rights of the holders of any series of preferred stock with respect to such series of preferred stock, any action required or permitted to be taken by the stockholders of the Company must be effected at a duly called annual or special meeting of stockholders of the Company and may not be effected by any consent in writing by such stockholders.

#### Preferred Stock
No shares of preferred stock are currently outstanding. Our certificate of incorporation authorizes our board of directors to issue and to designate the terms of one or more new classes or series of preferred stock. The rights with respect to a class or series of preferred stock may be greater than the rights attached to our common stock. It is not possible to state the actual effect of the issuance of any shares of our preferred stock on the rights of holders of our common stock until our board of directors determines the specific rights attached to that class or series of preferred stock.

#### Certain Anti-Takeover Provisions of Delaware Law and our Certificate of Incorporation and Bylaws

#### Special Meeting of Stockholders
Our bylaws provide that special meetings of our stockholders may be called only by the Chairman of the Board, by our Chief Executive Officer or by a majority vote of our entire board of directors.

#### Advance Notice Requirements for Stockholder Proposals and Director Nominations
Our bylaws provide that stockholders seeking to bring business before our annual meeting of stockholders, or to nominate candidates for election as directors at our annual meeting of stockholders, must provide timely notice of their intent in writing. To be timely, a stockholder's notice must be delivered to our principal executive offices not less than 90 days nor more than 120 days prior to the meeting. Our

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bylaws also specify certain requirements as to the form and content of a stockholder's notice. These provisions may preclude our stockholders from bringing matters before our annual meeting of stockholders or from making nominations for directors at our annual meeting of stockholders.

#### Stockholder-Initiated Bylaw Amendments
Our bylaws may be adopted, amended, altered or repealed by stockholders only upon approval of at least two-thirds of the voting power of all the then-outstanding shares. Additionally, our certificate of incorporation provides that our bylaws may be amended, altered or repealed by the board of directors by a majority vote.

#### Authorized but Unissued Shares
Our authorized but unissued shares of Class A common stock, Class B non-voting common stock and preferred stock are available for future issuances without stockholder approval and could be utilized for a variety of corporate purposes, including future offerings to raise additional capital, acquisitions and employee benefit plans. The existence of authorized but unissued and unreserved common stock and preferred stock could render more difficult or discourage an attempt to obtain control of us by means of a proxy contest, tender offer, merger or otherwise.

#### Delaware Anti-Takeover Statute
We are subject to Section 203 of the DGCL, which prohibits a publicly held Delaware corporation from engaging in a business combination with an interested stockholder for a period of three years after the date of the transaction in which the person becomes an interested stockholder, unless:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • before that date, the board of directors of the corporation approves either the business combination or the transaction that resulted in the stockholder's becoming an interested stockholder;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • upon consummation of the transaction that resulted in the stockholder's becoming an interested stockholder, the interested stockholder owns at least 85% of the outstanding voting stock, excluding shares of common stock held by directors, officers and employee stock plans; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • on or after the consummation date, the business combination is approved by the board of directors and by the affirmative vote at an annual or special meeting of stockholders of at least 66-<sup>2</sup>∕3% of the outstanding voting stock that is not owned by the interested stockholder.

For purposes of Section 203, a business combination includes a merger, asset sale or other transaction resulting in a financial benefit to the interested stockholder. An interested stockholder is generally a person who, together with affiliates and associates of that person, (a) owns 15% or more of the corporation's voting stock or (b) is an affiliate or associate of the corporation and was the owner of 15% or more of the outstanding voting stock of the corporation at any time within the three-year period immediately prior to the date on which it is to be determined whether such person is an interested stockholder.

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#### DESCRIPTION OF DEPOSITARY SHARES
We may offer depositary shares, which will be evidenced by depositary receipts, representing fractional interests in shares of preferred stock of any series. In connection with the issuance of any depositary shares, we will enter into a deposit agreement with a bank or trust company, as depositary, which will be named in the applicable prospectus supplement. The following briefly summarizes the material provisions of the deposit agreement and of the depositary shares and depositary receipts, other than pricing and related terms disclosed for a particular issuance in an accompanying prospectus supplement. This description is not complete and is subject to, and qualified in its entirety by reference to, all provisions of the deposit agreement, depositary shares and depositary receipts. You should read the particular terms of any depositary shares and any depositary receipts that we offer and any deposit agreement relating to a particular series of preferred stock described in more detail in a prospectus supplement. The prospectus supplement will also state whether any of the generalized provisions summarized below do not apply to the depositary shares or depositary receipts being offered.

#### General
We may, at our option, elect to offer fractional shares of preferred stock, rather than full shares of preferred stock. In such event, we will issue receipts for depositary shares, each of which will represent a fraction of a share of a particular series of preferred stock. For a description of our preferred stock, see "Description of Common Stock and Preferred Stock — Preferred Stock."

The shares of any series of preferred stock represented by depositary shares will be deposited under a deposit agreement between us and the depositary we select. Each owner of a depositary share will be entitled to all the rights and preferences of the underlying preferred stock, including any dividend, voting, redemption, conversion and liquidation rights described in the particular prospectus supplement, in proportion to the applicable fraction of a share of preferred stock represented by such depositary share.

The depositary shares will be evidenced by depositary receipts issued pursuant to the deposit agreement. Depositary receipts will be distributed to those persons purchasing the fractional shares of preferred stock in accordance with the terms of the applicable prospectus supplement.

#### Dividends and Other Distributions
The preferred stock depositary will distribute all cash dividends or other cash distributions, if any, received in respect of the deposited preferred stock to the record holders of depositary shares relating to the preferred stock in proportion to the number of depositary shares owned by such holders on the relevant record date.

In the case of a distribution other than in cash, the preferred stock depositary will distribute any property received by it other than cash to the record holders of depositary shares entitled to receive it in proportion to the number of depositary shares owned by such holder. If the preferred stock depositary determines that it is not feasible to make such a distribution, it may, with our approval, sell the property and distribute the net proceeds from the sale to the holders of the depositary shares.

The amounts distributed in any such distribution, whether in cash or otherwise, will be reduced by any amount required to be withheld by us or the preferred stock depositary on account of taxes.

#### Withdrawal of Preferred Stock
Unless otherwise indicated in the applicable prospectus supplement and unless the related depositary shares have been called for redemption, when a holder surrenders depositary receipts at the office of the preferred stock depositary maintained for that purpose, and pays any necessary taxes, charges or other fees, the holder will be entitled to receive the number of whole shares of the related series of preferred stock, and any money or other property, if any, represented by the holder's depositary shares. Once a holder exchanges depositary shares for whole shares of preferred stock, that holder generally cannot "re-deposit" these shares of preferred stock with the preferred stock depositary, or exchange them for depositary shares. If a holder delivers depositary receipts that represent a number of depositary shares other than a whole number

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of shares of preferred stock for redemption or exchange, the preferred stock depositary will issue a new depositary receipt to the holder that evidences the remainder of depositary shares at the same time that the preferred stock is withdrawn.

#### Redemption, Conversion and Exchange of Preferred Stock
If a series of preferred stock represented by depositary shares is to be redeemed, the depositary shares will be redeemed from the proceeds received by the preferred stock depositary resulting from the redemption, in whole or in part, of that series of preferred stock. The depositary shares will be redeemed by the preferred stock depositary at a price per depositary share equal to the applicable fraction of the redemption price per share payable in respect of the shares of preferred stock redeemed.

Whenever we redeem shares of preferred stock held by the preferred stock depositary, the preferred stock depositary will redeem, as of the same date, the number of depositary shares representing shares of preferred stock redeemed. If fewer than all the depositary shares are to be redeemed, the depositary shares to be redeemed will be selected by the preferred stock depositary by lot or ratably or by any other equitable method, in each case as we may determine.

If a series of preferred stock represented by depositary shares is to be converted or exchanged, the holder of depositary receipts representing the shares of preferred stock being converted or exchanged will have the right or obligation to convert or exchange the depositary shares evidenced by the depositary receipts.

After the redemption, conversion or exchange date, the depositary shares called for redemption, conversion or exchange will no longer be outstanding. When the depositary shares are no longer outstanding, all rights of the holders will end, except the right to receive money, securities or other property payable upon redemption, conversion or exchange.

#### Voting Deposited Preferred Stock
Upon receipt of notice of any meeting at which the holders of any series of deposited preferred stock are entitled to vote, the preferred stock depositary will mail the information contained in the notice of meeting to the record holders of the depositary receipts evidencing the depositary shares relating to that series of preferred stock. Each record holder of the depositary receipts on the record date will be entitled to instruct the preferred stock depositary to vote the amount of the preferred stock represented by the holder's depositary shares. The preferred stock depositary will try, if practical, to vote the amount of such series of preferred stock represented by such depositary shares in accordance with such instructions.

We will agree to take all reasonable actions that the preferred stock depositary determines are necessary to enable the preferred stock depositary to vote as instructed. The preferred stock depositary will abstain from voting shares of any series of preferred stock held by it for which it does not receive specific instructions from the holders of depositary shares representing those preferred shares.

#### Amendment and Termination of the Deposit Agreement
The form of depositary receipt evidencing the depositary shares and any provision of the deposit agreement may at any time be amended by agreement between us and the preferred stock depositary. However, any amendment that materially and adversely alters any existing right of the holders of depositary receipts will not be effective unless the amendment has been approved by the holders of depositary receipts representing at least a majority of the depositary shares then outstanding. Additionally, in the case of amendments relating to or affecting rights to receive dividends or distributions or voting or redemption rights, approval is also required by the holders of depositary receipts representing not less than a specified percentage or all of the depositary shares of such series or class then outstanding, as provided in the applicable prospectus supplement. Every holder of an outstanding depositary receipt at the time any such amendment becomes effective will be deemed, by continuing to hold the depositary receipt, to consent and agree to the amendment and to be bound by the deposit agreement, as amended.

We may direct the preferred stock depositary to terminate the deposit agreement at any time by mailing notice of termination to the record holders of the depositary receipts then outstanding at least 30 days prior to the date fixed for termination. Upon termination, the preferred stock depositary will deliver to each

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holder of depositary receipts, upon surrender of those receipts, such number of whole shares of the series of preferred stock represented by the depositary shares together with cash in lieu of any fractional shares, to the extent we have deposited cash for payment in lieu of fractional shares with the preferred stock depositary. In addition, the deposit agreement will automatically terminate if

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • all of the outstanding shares of the preferred stock deposited with the preferred stock depositary have been withdrawn, redeemed, converted or exchanged; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • there has been a final distribution in respect of the deposited preferred stock in connection with our liquidation, dissolution or winding up and the distribution has been made to the holders of the related depositary shares evidenced by depositary receipts.

#### Charges of Preferred Stock Depositary; Taxes and Other Governmental Charges
We will pay all transfer and other taxes and governmental charges arising solely from the existence of the depositary arrangements. We also will pay charges of the preferred stock depositary in connection with the initial deposit of preferred stock and any redemption of preferred stock. Holders of depositary receipts will pay other transfer and other taxes and governmental charges and such other charges, including a fee for the withdrawal of shares of preferred stock upon surrender of depositary receipts, as are expressly provided in the deposit agreement to be for their accounts.

Prospective purchasers of depositary shares should be aware that special tax, accounting and other issues may be applicable to instruments such as depositary shares.

#### Resignation and Removal of Depositary
The preferred stock depositary may resign at any time by delivering to us notice of its intent to do so, and we may at any time remove the preferred stock depositary, any such resignation or removal to take effect upon the appointment of a successor preferred stock depositary meeting the requirements specified in the deposit agreement and its acceptance of such appointment.

#### Miscellaneous
The preferred stock depositary will forward all reports and communications from us which are delivered to the preferred stock depositary and which we are required to furnish to the holders of the deposited preferred stock.

Neither we nor the preferred stock depositary will be liable if we are or the preferred stock depositary is prevented or delayed by law or any circumstances beyond our or its control in performing our or its obligations under the deposit agreement. Our obligations and the obligations of the preferred stock depositary under the deposit agreement will be limited to performance in good faith of the duties under the deposit agreement, and we and the preferred stock depositary will not be obligated to prosecute or defend any legal proceeding in respect of any depositary shares, depositary receipts or shares of preferred stock unless satisfactory indemnity is furnished. We and the preferred stock depositary may rely upon written advice of counsel or accountants, or upon information provided by holders of depositary receipts or other persons believed to be competent and on documents believed to be genuine.

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#### DESCRIPTION OF PURCHASE CONTRACTS
We may issue purchase contracts, including purchase contracts issued as part of a unit with one or more other securities, for the purchase or sale of our debt securities, preferred stock, depositary shares or common stock.

The price of our debt securities or the price per share of our common stock, preferred stock or depositary shares may be fixed at the time the purchase contracts are issued or may be determined by reference to a specific formula contained in the purchase contracts. We may issue purchase contracts in such amounts and in as many distinct series as we wish.

The applicable prospectus supplement may contain, where applicable, the following information about the purchase contracts issued under it:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the purchase contracts obligate the holder to purchase or sell, or both purchase and sell, our debt securities, common stock, preferred stock or depositary shares, and the nature and amount of each of those securities, or method of determining those amounts;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the purchase contracts are to be prepaid or not;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the consideration per share of common stock or preferred stock or per depositary share may be fixed at the time the stock purchase contracts are issued or may be determined by a specific reference to a formula set forth in the stock purchase contracts;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the purchase contracts are to be settled by delivery, or by reference or linkage to the value, performance or level of our common stock or preferred stock;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any acceleration, cancellation, termination or other provisions relating to the settlement of the purchase contracts;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • United States federal income tax considerations relevant to the purchase contracts; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the purchase contracts will be issued in fully registered or global form.

The applicable prospectus supplement will describe the terms of any purchase contracts. The preceding description and any description of purchase contracts in the applicable prospectus supplement does not purport to be complete and is subject to and is qualified in its entirety by reference to the purchase contract agreement and, if applicable, collateral arrangements and depositary arrangements relating to such purchase contracts.

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#### DESCRIPTION OF WARRANTS
We may issue warrants for the purchase of our debt securities, shares of our common stock or preferred stock, or depositary shares. Warrants may be issued independently or together with any of our debt securities, shares of common stock or preferred stock or depositary shares offered by any prospectus supplement and may be attached to or separate from the debt securities, shares of common stock or preferred stock or depositary shares. The warrants will be issued under warrant agreements to be entered into between National Bank Holdings Corporation and a warrant agent, as is named in the prospectus supplement relating to the particular issue of warrants. The warrant agent will act solely as an agent of National Bank Holdings Corporation in connection with the warrants and will not assume any obligation or relationship of agency or trust for or with any holders of warrants or beneficial owners of warrants.

The following outlines some of the anticipated general terms and conditions of the warrants. Further terms of the warrants and the applicable warrant agreement will be stated in the applicable prospectus supplement. The following description and any description of the warrants in a prospectus supplement may not be complete and is subject to and qualified in its entirety by reference to the terms and provisions of the applicable warrant agreement.

#### General
If warrants are offered, the prospectus supplement will describe the terms of the warrants, including the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the title of the warrants;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the price or prices at which the warrants will be issued;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the designation, aggregate principal amount and terms of the debt securities purchasable upon exercise of any debt warrants and the price at which such debt securities may be purchased upon such exercise;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the price or prices at which the warrants may be exercised to purchase the securities underlying them;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the number of shares purchasable upon exercise of any common stock warrants and the price at which such shares of common stock may be purchased upon such exercise;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the designation, number of shares and terms of the preferred stock purchasable upon exercise of any preferred stock warrants and the price at which such shares of preferred stock may be purchased upon such exercise;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • if applicable, the date on and after which the warrants and the related debt securities, common stock or preferred stock will be separately transferable;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • if applicable, the minimum or maximum amount of the warrants that may be exercised at any one time;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the date on which the right to exercise the warrants shall commence and the date on which such right shall expire;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the warrants will be issued in registered or bearer form;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a discussion of certain federal income tax, accounting and other special considerations, procedures and limitations relating to the warrants; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any other terms of the warrants, including terms, procedures and limitations relating to the exchange and exercise of the warrants.

If in registered form, warrants may be presented for registration of transfer, and may be exercised at the corporate trust office of the warrant agent or any other office indicated in the prospectus supplement. Before the exercise of their warrants, holders of warrants will not have any of the rights of holders of the securities purchasable upon such exercise.

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#### Exercise of Warrants
Each warrant will entitle the holder to purchase such principal amount of debt securities or such number of shares of common stock or preferred stock or depositary shares at such exercise price as shall in each case be set forth in, or can be calculated according to information contained in, the prospectus supplement relating to the warrant. Warrants may be exercised at such times as are set forth in the prospectus supplement relating to such warrants. After the close of business on the expiration date of the warrants, or such later date to which such expiration date may be extended by National Bank Holdings Corporation, unexercised warrants will become void.

Subject to any restrictions and additional requirements that may be set forth in the prospectus supplement, warrants may be exercised by delivery to the warrant agent of the certificate evidencing such warrants properly completed and duly executed and of payment as provided in the prospectus supplement of the amount required to purchase the debt securities or shares of common stock or preferred stock or depositary shares purchasable upon such exercise. The exercise price will be the price applicable on the date of payment in full, as set forth in the prospectus supplement relating to the warrants. Upon receipt of such payment and the certificate representing the warrants to be exercised, properly completed and duly executed at the corporate trust office of the warrant agent or any other office indicated in the prospectus supplement, we will, as soon as practicable, issue and deliver the debt securities or shares of common stock or preferred stock or depositary shares purchasable upon such exercise. If fewer than all of the warrants represented by such certificate are exercised, a new certificate will be issued for the remaining amount of warrants.

#### Additional Provisions
The exercise price payable and the number of shares of common stock or preferred stock purchasable upon the exercise of each stock warrant will be subject to adjustment in certain events, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the issuance of the stock dividend to holders of common stock or preferred stock, respectively;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • a combination, subdivision or reclassification of common stock or preferred stock, respectively; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any other event described in the applicable prospectus supplement.

In lieu of adjusting the number of shares of common stock or preferred stock purchasable upon exercise of each stock warrant, we may elect to adjust the number of stock warrants. We may, at our option, reduce the exercise price at any time. No fractional shares will be issued upon exercise of stock warrants, but we will pay the cash value of any fractional shares otherwise issuable. Notwithstanding the foregoing, in case of any consolidation, merger, or sale or conveyance of the property of National Bank Holdings Corporation as an entirety or substantially as an entirety, the holder of each outstanding stock warrant will have the right upon the exercise thereof to the kind and amount of shares of stock and other securities and property, including cash, receivable by a holder of the number of shares of common stock or preferred stock into which such stock warrants were exercisable immediately prior thereto.

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#### DESCRIPTION OF RIGHTS
This section describes the general terms of the rights to purchase common stock or other securities that we may offer using this prospectus. Further terms of the rights will be stated in the applicable prospectus supplement. The following description and any description of the rights in a prospectus supplement may not be complete and is subject to and qualified in its entirety by reference to the terms of any agreement relating to the rights.

We may issue rights to purchase our debt securities, shares of our common stock or our preferred stock, depositary shares or any combination thereof. The rights may be issued independently or together with any other securities and may be attached or separate from the other securities. Each series of rights will be issued under a separate rights agreement to be entered into between a rights agent and us. The rights agent will act solely as our agent in connection with the rights and will not assume any obligation or relationship of agency for or with the holders or beneficial owners of rights.

Rights may be issued independently or together with any other security and may or may not be transferable. As part of the rights offering, we may enter into a standby underwriting or other arrangement under which the underwriters or any other person would purchase any securities that are not purchased in such rights offering. The prospectus supplement relating to any rights we offer will describe the specific terms of the offering and the rights, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the title of the rights;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the record date for determining security holders entitled to the rights distribution;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the number of rights issued and the number of shares of common stock or other securities that may be purchased upon exercise of the rights;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the rights agent;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the designation and terms of the underlying securities purchasable upon exercise of the rights and the number of such underlying securities initially issuable upon exercise of the rights;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • if applicable, the designation and terms of the other securities with which the rights are issued and the number of such rights securities issued with each such underlying right;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the date, if any, on and after which the rights will be separately transferable;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • if applicable, the minimum or maximum number of rights that may be exercised at any one time; the exercise price of the rights;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the steps required to exercise the rights;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the conditions to the completion of the offering, if any;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the withdrawal, termination and cancellation rights, if any;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the date on which the rights will become effective and the date on which the rights will expire;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the rights will include oversubscription rights, so that the holder may purchase more securities if other holders do not purchase their full allotments;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether we intend to sell the shares of common stock or other securities that are not purchased in the offering to an underwriter or other purchaser under a contractual standby commitment or other arrangement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • our ability to withdraw or terminate the rights offering prior to the expiration date of the rights;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any material U.S. federal income tax consequences; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any other terms of the rights, including terms, procedures and limitations relating to the distribution, exchange and exercise of the rights.

Each right will entitle the holder of rights to purchase for cash the principal amount of shares of common stock, preferred stock or other securities at the exercise price provided in the applicable prospectus supplement. Unless otherwise provided in the applicable prospectus supplement, rights may be exercised

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at any time up to the close of business on the expiration date for the rights provided in the applicable prospectus supplement. Rights will be issued in registered form only.

Prior to the exercise of their rights, holders of rights will not have any of the rights of holders of the securities purchasable upon the exercise of the rights, and will not be entitled to, among other things, vote or receive dividend payments or other distributions on the securities purchasable upon exercise.

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#### DESCRIPTION OF UNITS
This section identifies the general terms of the rights to issue units consisting of common stock, preferred stock, debt securities, warrants, rights, stock purchase contracts or any combination of one or more of the other securities described in this prospectus. Further terms of the rights will be stated in the applicable prospectus supplement. The following description and any description of the rights in a prospectus supplement may not be complete and is subject to and qualified in its entirety by reference to the terms of any agreement relating to the rights.

The applicable prospectus supplement or supplements will also describe:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the designation and the terms of the units and of any combination of the securities constituting the units, including whether and under what circumstances those securities may be held or traded separately;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any additional terms of the agreement governing the units;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any additional provisions for the issuance, payment, settlement, transfer or exchange of the units or of the securities constituting the units;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • any applicable material United States federal income tax consequences; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • whether the units will be issued in fully registered form.

The terms and conditions described under "Description of Debt Securities," "Description of Warrants," and "Description of Common Stock and Preferred Stock" will apply to each unit that includes such securities and to the securities included in each unit, unless otherwise specified in the applicable prospectus supplement.

We will issue the units under one or more unit agreements to be entered into between us and a bank or trust company, as unit agent. We may issue units in one or more series, which will be described in the applicable prospectus supplement.

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#### DESCRIPTION OF GLOBAL SECURITIES
Unless otherwise indicated in the applicable prospectus supplement, we may issue the securities in the form of one or more fully registered global securities that will be deposited with a depository or its nominee identified in the applicable prospectus supplement and registered in the name of that depository or its nominee. In those cases, one or more registered global securities will be issued in a denomination or aggregate denominations equal to the portion of the aggregate principal or face amount of the securities to be represented by registered global securities. Unless and until it is exchanged in whole for securities in definitive registered form, a registered global security may not be transferred except as a whole by and among the depository for the registered global security, the nominees of the depository or any successors of the depository or those nominees.

If not described below, any specific terms of the depository arrangement with respect to any securities to be represented by a registered global security will be described in the prospectus supplement relating to those securities. We anticipate that the following provisions will apply to all depository arrangements.

Ownership of beneficial interests in a registered global security will be limited to persons, called participants, that have accounts with the depository or persons that may hold interests through participants. Upon the issuance of a registered global security, the depository will credit, on its book-entry registration and transfer system, the participants' accounts with the respective principal or face amounts of the securities beneficially owned by the participants. Any dealers, underwriters or agents participating in the distribution of the securities will designate the accounts to be credited.

Ownership of beneficial interests in a registered global security will be shown on, and the transfer of ownership interests will be effected only through, records maintained by the depository, with respect to interests of participants, and on the records of participants, with respect to interests of persons holding through participants. The laws of some states may require that some purchasers of securities take physical delivery of these securities in definitive form. These laws may impair your ability to own, transfer or pledge beneficial interests in registered global securities.

So long as the depository, or its nominee, is the registered owner of a registered global security, that depository or its nominee, as the case may be, will be considered the sole owner or holder of the securities represented by the registered global security for all purposes. Except as described below, owners of beneficial interests in a registered global security will not be entitled to have the securities represented by the registered global security registered in their names, will not receive or be entitled to receive physical delivery of the securities in definitive form and will not be considered the owners or holders of the securities. Accordingly, each person owning a beneficial interest in a registered global security must rely on the procedures of the depository for that registered global security and, if that person is not a participant, on the procedures of the participant through which the person owns its interest, to exercise any rights of a holder under the applicable indenture, warrant agreement or unit agreement. We understand that under existing industry practices, if we request any action of holders or if an owner of a beneficial interest in a registered global security desires to give or take any action that a holder is entitled to give or take, the depository for the registered global security would authorize the participants holding the relevant beneficial interests to give or take that action, and the participants would authorize beneficial owners owning through them to give or take that action or would otherwise act upon the instructions of beneficial owners holding through them.

Payments of principal of, and premium, if any, and interest on, debt securities, and any payments to holders with respect to other securities represented by a registered global security registered in the name of a depository or its nominee will be made to the depository or its nominee, as the case may be, as the registered owner of the registered global security. None of National Bank Holdings Corporation, the trustees, the warrant agents or any preferred stock depositary, as applicable, will have any responsibility or liability for any aspect of the records relating to or the payments made on account of beneficial ownership interests in the registered global security or for maintaining, supervising or reviewing any records relating to those beneficial ownership interests.

We expect that the depository for any of the securities represented by a registered global security, upon receipt of any payment of principal, premium, interest or other distribution of underlying securities or other property to holders on that registered global security, will immediately credit participants' accounts in

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amounts proportionate to their respective beneficial interests in that registered global security as shown on the records of the depository. We also expect that payments by participants to owners of beneficial interests in a registered global security held through participants will be governed by standing customer instructions and customary practices, as is now the case with the securities held for the accounts of customers in bearer form or registered in "street name," and will be the responsibility of those participants.

If the depository for any of these securities represented by a registered global security is at any time unwilling or unable to continue as depository or ceases to be a clearing agency registered under the Exchange Act, and a successor depository registered as a clearing agency under the Exchange Act is not appointed by us within 90 days, we will issue securities in definitive form in exchange for the registered global security that had been held by the depository. In addition, under the terms of the indenture, we may at any time and in our sole discretion decide not to have any of the securities represented by one or more registered global securities. We understand, however, that, under current industry practices, the depository would notify its participants of our request, but will only withdraw beneficial interests from a global security at the request of each participant. We would issue definitive certificates in exchange for any such interests withdrawn. Any securities issued in definitive form in exchange for a registered global security will be registered in the name or names that the depository gives to the applicable trustee, warrant agent, unit agent or other relevant agent of ours or theirs. It is expected that the depository's instructions will be based upon directions received by the depository from participants with respect to ownership of beneficial interests in the registered global security that had been held by the depository.

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#### SELLING STOCKHOLDERS
We may register securities covered by this prospectus for re-offers and resales by selling stockholders. We may add secondary sales of securities by any selling stockholders by filing a prospectus supplement with the SEC. We may register these securities to permit selling stockholders to resell their shares when they deem appropriate. A selling stockholders may resell all, a portion or none of their securities at any time and from time to time. We may register those securities for sale through an underwriter or other plan of distribution as described in the applicable prospectus supplement.

Selling stockholders may also sell, transfer or otherwise dispose of some or all of their shares in transactions exempt from the registration requirements of the Securities Act. We may pay expenses we incur with respect to the registration of the securities owned by selling security holders, other than underwriting fees, discounts or commissions, which will be borne by the selling stockholders. We will provide you with a prospectus supplement naming the selling stockholders, the amount of securities to be registered and sold and other terms of the securities being sold by a selling stockholders.

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#### PLAN OF DISTRIBUTION
We and/or the selling stockholders may offer and sell the securities being offered hereby in one or more of the following ways from time to time:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • to or through underwriters, brokers or dealers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • directly to one or more other purchasers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • through a block trade in which the broker or dealer engaged to handle the block trade will attempt to sell the common stock as agent, but may position and resell a portion of the block as principal to facilitate the transaction;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • through registered sales pursuant to a resale prospectus supplement pursuant to Rule 424(b);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • through agents on a best-efforts basis; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • otherwise through a combination of any of the above methods of sale.

The selling stockholders may also sell shares of common stock under Rule 144 of the Securities Act, or any other available exemption, rather than under this prospectus.

In addition, we and/or the selling stockholders may enter into option, share lending or other types of transactions that require us and/or the selling stockholders to deliver shares of common stock or preferred stock to an underwriter, broker or dealer, who will then resell or transfer the shares of common stock or preferred stock under this prospectus. We and/or the selling stockholders may enter into hedging transactions with respect to our securities. For example, we and/or the selling stockholders may:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • enter into transactions involving short sales of the shares of common stock or preferred stock by underwriters, brokers or dealers;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • sell shares of common stock or preferred stock short and deliver the shares to close out short positions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • enter into option or other types of transactions that require us to deliver shares of common stock or preferred stock to an underwriter, broker or dealer, who will then resell or transfer the shares of common stock or preferred stock under this prospectus; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • loan or pledge the shares of common stock or preferred stock to an underwriter, broker or dealer, who may sell the loaned shares or, in the event of default, sell the pledged shares.

Each time that we and/or the selling stockholders use this prospectus to sell our securities, we will also provide a prospectus supplement that contains the specific terms of the offering. The prospectus supplement will set forth the terms of the offering of such securities, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the name or names of any underwriters, dealers or agents and the type and amounts of securities underwritten or purchased by each of them; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • the public offering price of the securities and the proceeds to us and any discounts, commissions or concessions allowed or reallowed or paid to dealers.

Sales of the securities may be effected from time to time in one or more transactions, including negotiated transactions:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • at a fixed price or prices, which may be changed;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • at market prices prevailing at the time of sale;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • at prices related to prevailing market prices; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • at negotiated prices.

Any public offering price and any discounts or concessions allowed or reallowed or paid to dealers may be changed from time to time.

If underwriters are used in the sale of any securities, the securities will be acquired by the underwriters for their own account and may be resold from time to time in one or more transactions, including negotiated

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transactions, at a fixed public offering price or at varying prices determined at the time of sale. The securities may be either offered to the public through underwriting syndicates represented by managing underwriters, or directly by underwriters. Generally, the underwriters' obligations to purchase the securities will be subject to certain conditions precedent. The underwriters will be obligated to purchase all of the securities if they purchase any of the securities.

We and/or the selling stockholders may sell the securities through agents from time to time. The prospectus supplement will name any agent involved in the offer or sale of our securities and any commissions we pay to them. Generally, any agent will be acting on a best efforts basis for the period of its appointment.

We and/or the selling stockholders may authorize underwriters, dealers or agents to solicit offers by certain purchasers to purchase our securities at the public offering price set forth in the prospectus supplement pursuant to delayed delivery contracts providing for payment and delivery on a specified date in the future. The contracts will be subject only to those conditions set forth in the prospectus supplement, and the prospectus supplement will set forth any commissions or discounts we pay for solicitation of these contracts.

In connection with the sale of any of the securities, underwriters or agents may receive compensation from us and/or the selling stockholders in the form of underwriting discounts or commissions and may also receive compensation from purchasers of the securities, for whom they may act as agents, in the form of discounts, concessions or commissions. Underwriters may sell the securities to or through dealers, and such dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters and/or commissions from the purchasers for whom they may act as agents. Discounts, concessions and commissions may be changed from time to time. Dealers and agents that participate in the distribution of the securities may be deemed to be underwriters under the Securities Act, and any discounts, concessions or commissions they receive from us and any profit on the resale of securities they realize may be deemed to be underwriting compensation under applicable federal and state securities laws.

Pursuant to a requirement by the Financial Industry Regulatory Authority ("*FINRA*"), the maximum commission or discount to be received by any FINRA member or independent broker-dealer may not be greater than 8% of the gross proceeds received by us from the sale of any securities registered pursuant to SEC Rule 415.

Agents and underwriters may be entitled to indemnification by us and/or the selling stockholders against certain civil liabilities, including liabilities under the Securities Act, or to contribution with respect to payments which the agents or underwriters may be required to make in respect thereof. Agents and underwriters may be customers of, engage in transactions with, or perform services for us and/or the selling stockholders in the ordinary course of business.

Unless otherwise specified in the related prospectus supplement, each series of securities will be a new issue with no established trading market, other than our Class A common stock, which is listed on the NYSE. We expect that any Class A common stock sold pursuant to a prospectus supplement will be listed on the NYSE, subject to official notice of issuance. We may elect to list any series of debt securities, Class B common stock or preferred stock on an exchange, but we are not obligated to do so. It is possible that one or more underwriters may make a market in the securities, but such underwriters will not be obligated to do so and may discontinue any market making at any time without notice. No assurance can be given as to the liquidity of, or the trading market for, any offered securities.

We and/or the selling stockholders may enter into derivative transactions with third parties, or sell securities not covered by this prospectus to third parties in privately negotiated transactions. If the applicable prospectus supplement so indicates in connection with those derivatives, then the third parties may sell securities covered by this prospectus and the applicable prospectus supplement, including in short sale transactions. In that event, the third party may use securities pledged by us and/or the selling stockholders or borrowed from us and/or the selling stockholders or others to settle those sales or to close out any related open borrowings of stock, and may use securities received from us in settlement of those derivatives to close out any related open borrowings of securities. The third party in such sale transactions will be an underwriter and will be identified in the applicable prospectus supplement (or a post-effective amendment).

Until the distribution of the securities is completed, rules of the SEC may limit the ability of any underwriters and selling group members to bid for and purchase the securities. As an exception to these

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rules, underwriters are permitted to engage in some transactions that stabilize the price of the securities. Such transactions consist of bids or purchases for the purpose of pegging, fixing or maintaining the price of the securities.

Underwriters may engage in overallotment. If any underwriters create a short position in the securities in an offering in which they sell more securities than are set forth on the cover page of the applicable prospectus supplement, the underwriters may reduce that short position by purchasing the securities in the open market.

The lead underwriters may also impose a penalty bid on other underwriters and selling group members participating in an offering. This means that if the lead underwriters purchase securities in the open market to reduce the underwriters' short position or to stabilize the price of the securities, they may reclaim the amount of any selling concession from the underwriters and selling group members who sold those securities as part of the offering.

In general, purchases of a security for the purpose of stabilization or to reduce a short position could cause the price of the security to be higher than it might be in the absence of such purchases. The imposition of a penalty bid might also have an effect on the price of a security to the extent that it were to discourage resales of the security before the distribution is completed.

We and/or the selling stockholders do not make any representation or prediction as to the direction or magnitude of any effect that the transactions described above might have on the price of the securities. In addition, we and/or the selling stockholders do not make any representation that underwriters will engage in such transactions or that such transactions, once commenced, will not be discontinued without notice.

If we and/or the selling stockholders offer securities in a subscription rights offering to our existing security holders, we and/or the selling stockholders may enter into a standby underwriting agreement with dealers, acting as standby underwriters. We and/or the selling stockholders may pay the standby underwriters a commitment fee for the securities they commit to purchase on a standby basis. If we and/or the selling stockholders do not enter into a standby underwriting arrangement, we and/or the selling stockholders may retain a dealer-manager to manage a subscription rights offering for us and/or the selling stockholders.

Underwriters, dealers and agents may engage in transactions with us and/or the selling stockholders or perform services for us and/or the selling stockholders in the ordinary course of business.

If indicated in the applicable prospectus supplement, we and/or the selling stockholders will authorize underwriters or other persons acting as our agents to solicit offers by particular institutions to purchase securities from us and/or the selling stockholders at the public offering price set forth in such prospectus supplement pursuant to delayed delivery contracts providing for payment and delivery on the date or dates stated in such prospectus supplement. Each delayed delivery contract will be for an amount no less than, and the aggregate amounts of securities sold under delayed delivery contracts shall be not less nor more than, the respective amounts stated in the applicable prospectus supplement. Institutions with which such contracts, when authorized, may be made include commercial and savings banks, insurance companies, pension funds, investment companies, educational and charitable institutions and others, but will in all cases be subject to our and/or the selling stockholders' approval. The obligations of any purchaser under any such contract will be subject to the conditions that (a) the purchase of the securities shall not at the time of delivery be prohibited under the laws of any jurisdiction in the United States to which the purchaser is subject, and (b) if the securities are being sold to underwriters, we and/or the selling stockholders shall have sold to the underwriters the total amount of the securities less the amount thereof covered by the contracts. The underwriters and such other agents will not have any responsibility in respect of the validity or performance of such contracts.

To comply with applicable state securities laws, the securities offered by this prospectus will be sold, if necessary, in such jurisdictions only through registered or licensed brokers or dealers. In addition, securities may not be sold in some states unless they have been registered or qualified for sale in the applicable state or an exemption from the registration or qualification requirement is available and is complied with.

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#### LEGAL MATTERS
In connection with particular offerings of our securities in the future, and unless otherwise indicated in the applicable prospectus supplement, the validity of the securities offered hereby will be passed upon for us by Wachtell, Lipton, Rosen & Katz, New York, New York. Additional legal matters may be passed on for us, or any underwriters, dealers or agents, by counsel that we will name in the applicable prospectus supplement.

#### EXPERTS
The consolidated financial statements of National Bank Holdings Corporation as of December 31, 2024 and 2023, and for each of the years in the three-year period ended December 31, 2024, and management's assessment of the effectiveness of internal control over financial reporting as of December 31, 2024 have been incorporated by reference herein in reliance upon the reports of KPMG LLP, independent registered public accounting firm, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing.

The consolidated financial statements of Vista Bancshares, Inc. and Subsidiaries as of and for the years ended December 31, 2024 and 2023 have been incorporated by reference herein and have been audited by Whitley Penn LLP, independent auditors, in reliance upon the report of such firm incorporated by reference herein, and upon the authority of such firm as experts in accounting and auditing.

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### $150,000,000
![[MISSING IMAGE: lg_nationalbankholdings-4c.jpg]](lg_nationalbankholdings-4c.jpg)

### 5.875% Fixed-to-Floating Rate Subordinated Notes due 2036

#### PROSPECTUS SUPPLEMENT
![[MISSING IMAGE: lg_pipersandler-4c.jpg]](lg_pipersandler-4c.jpg)

#### February 9, 2026

------

## Ex-Filing

?xml version='1.0' encoding='ASCII'? EX-FILING FEES

---

| |
|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Calculation of Filing Fee Tables**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **S-3**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **National Bank Holdings Corp**  |

---

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Type**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Class Title**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Calculation or Carry Forward Rule**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Maximum Aggregate Offering Price**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Rate**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount of Registration Fee**  |
| **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** |
| Fees to be Paid | 1 | Debt | 5.875% Fixed-to-Floating Rate Subordinated Notes due 2036 | 457(r) | $150000000.00 | 0.0001381 | $20715.00 |
| Fees Previously Paid |  |  |  |  |  |  |  |
| **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** |
| Carry Forward Securities |  |  |  |  |  |  |  |
|  |  |  | Total Offering Amounts: | Total Offering Amounts: | $150000000.00  |  | $20715.00  |
|  |  |  | Total Fees Previously Paid:  | Total Fees Previously Paid:  |  |  | $0.00  |
|  |  |  | Total Fee Offsets:  | Total Fee Offsets:  |  |  | $0.00  |
|  |  |  | Net Fee Due:  | Net Fee Due:  |  |  | $20715.00  |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Offering Note** <br>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <sup>1</sup> The prospectus supplement to which this Exhibit is attached is a final prospectus for the related offering. The maximum aggregate amount of that offering is $150,000,000.

---

| | |
|:---|:---|
| | |
| **Rules 457(b) and 0-11(a)(2)** | **Rules 457(b) and 0-11(a)(2)** |
| Fee Offset Claims | N/A |
| Fee Offset Sources | N/A |
| **Rule 457(p)** | **Rule 457(p)** |
| Fee Offset Claims | N/A |
| Fee Offset Sources | N/A |

---

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Type**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Class Title**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount of Securities Previously Registered**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Maximum Aggregate Offering Price of Securities Previously Registered**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Form Type**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **File Number**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Initial Effective Date**  |
| N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |

---

The maximum aggregate offering price of the securities to which the prospectus relates is $150,000,000.00. The prospectus is a final prospectus for the related offering.