Groowe Groowe BETA / Newsroom
⏱ News is delayed by 15 minutes. Sign in for real-time access. Sign in

Form 8-K

sec.gov

8-K — CAPITAL ONE FINANCIAL CORP

Accession: 0001193125-26-171745

Filed: 2026-04-23

Period: 2026-04-23

CIK: 0000927628

SIC: 6021 (NATIONAL COMMERCIAL BANKS)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — d253456d8k.htm (Primary)

EX-5.1 (d253456dex51.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: d253456d8k.htm · Sequence: 1

8-K

CAPITAL ONE FINANCIAL CORP false 0000927628 0000927628 2026-04-23 2026-04-23 0000927628 us-gaap:CommonStockMember 2026-04-23 2026-04-23 0000927628 cof:SeriesIPreferredStockMember 2026-04-23 2026-04-23 0000927628 cof:SeriesJPreferredStockMember 2026-04-23 2026-04-23 0000927628 cof:SeriesKPreferredStockMember 2026-04-23 2026-04-23 0000927628 cof:SeriesLPreferredStockMember 2026-04-23 2026-04-23 0000927628 cof:SeriesNPreferredStockMember 2026-04-23 2026-04-23 0000927628 us-gaap:SeniorNotesMember 2026-04-23 2026-04-23

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

April 23, 2026

Date of Report (Date of earliest event reported)

CAPITAL ONE FINANCIAL CORPORATION

(Exact name of registrant as specified in its charter)

Delaware

001-13300

54-1719854

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

1680 Capital One Drive,

McLean, Virginia

22102

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (703) 720-1000

(Not applicable)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class

Trading

Symbol(s)

Name of Each Exchange

on Which Registered

Common Stock (par value $.01 per share)

COF

New York Stock Exchange

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series I

COF PRI

New York Stock Exchange

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series J

COF PRJ

New York Stock Exchange

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series K

COF PRK

New York Stock Exchange

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series L

COF PRL

New York Stock Exchange

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series N

COF PRN

New York Stock Exchange

1.650% Senior Notes Due 2029

COF29

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01

Other Events.

This current report on Form 8-K is filed for the purpose of filing the attached exhibit in connection with the prospectus supplement, dated April 23, 2026 (the “Resale Prospectus Supplement”), filed by Capital One Financial Corporation (the “Company”) with the Securities and Exchange Commission, which forms a part of the Company’s automatic shelf registration statement on Form S-3 (File No. 333-277813).

The selling security holders referred to in the Resale Prospectus Supplement may offer and sell up to 10,345,906 shares of common stock, $0.01 par value per share, of the Company (“Company Common Stock”) under the Resale Prospectus Supplement. The Company issued these shares of Company Common Stock to the selling security holders as consideration in connection with the Company’s acquisition of Brex Inc., which closed on April 7, 2026.

Item 9.01

Financial Statements and Exhibits.

(d)

Exhibits

Exhibit No.

Description

5.1

Opinion of Wachtell, Lipton, Rosen & Katz

23.1

Consent of Wachtell, Lipton, Rosen & Katz (included in Exhibit 5.1)

104

The cover page from this Current Report on Form 8-K, formatted in Inline XBRL

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Company has duly caused this Current Report on Form 8-K to be signed on its behalf by the undersigned hereunto duly authorized.

CAPITAL ONE FINANCIAL CORPORATION

Date: April 23, 2026

By:

/s/ MATTHEW W. COOPER

Matthew W. Cooper

General Counsel and Corporate Secretary

EX-5.1

EX-5.1

Filename: d253456dex51.htm · Sequence: 2

EX-5.1

Exhibit 5.1

[Letterhead of Wachtell, Lipton, Rosen & Katz]

April 23, 2026

Capital One Financial

Corporation

1680 Capital One Drive

McLean, Virginia 22102

Re:

Prospectus Supplement to Registration Statement on Form S-3ASR

Ladies and Gentlemen:

We

have acted as special counsel to Capital One Financial Corporation, a Delaware corporation (the “Company”), in connection with its filing on the date hereof with the U.S. Securities and Exchange Commission of a prospectus

supplement (the “Prospectus Supplement”) to the prospectus dated March 11, 2024 (together with the Prospectus Supplement, the “Prospectus”) contained in the Registration Statement on Form S-3ASR (File No. 333-277813) (the “Registration Statement”), under the Securities Act of 1933, as amended (the “Act”), relating

to the registration for offer and sale from time to time by the selling security holders named in the Prospectus Supplement of up to 10,345,906 shares (the “Selling Securityholder Shares”) of the Company’s common stock,

par value $0.01 per share obtained in connection with the Company’s acquisition of Brex Inc., a Delaware corporation (“Brex”), pursuant to that certain Agreement and Plan of Merger and Reorganization, dated as of

January 22, 2026, by and among the Company, Brex, Trilogy Merger Sub I, Inc., Trilogy Merger Sub II, LLC and only for the express purposes provided therein and for no other purpose, Fortis Advisors LLC (the “Merger

Agreement”).

In rendering this opinion, we have examined and relied on (a) the Registration Statement; (b) the

Prospectus; (c) the Restated Certificate of Incorporation of the Company (as restated July 26, 2023), filed as Exhibit 3.1 to the Registration Statement; (d) the Amended and Restated Bylaws of the Company, dated September 23,

2021, filed as Exhibit 3.2 to the Registration Statement; (e) the Merger Agreement; and (f) certain resolutions of the Board of Directors of the Company adopted on January 19, 2026.

We have examined and relied on originals or copies certified or otherwise identified to our

satisfaction of such documents, corporate records, certificates of the Company or public officials and such other documents as we have deemed necessary or appropriate for the purposes of this opinion letter. We have also conducted such

investigations of fact and law as we have deemed necessary or advisable for purposes of this letter. In making such examination and rendering the opinion set forth below, we have assumed without verification (a) the authenticity of original

documents and the genuineness of all signatures; (b) each natural person signing any document reviewed by us had the legal capacity to do so; (c) each person signing in a representative capacity any document reviewed by us had authority to

sign in such capacity; (d) the conformity to the originals of all documents submitted to us as copies; and (e) the truth, accuracy and completeness of the information, representations and warranties contained in the agreements, records,

documents, instruments and certificates we have reviewed.

This opinion is provided pursuant to the requirements of Item 601(b)(5) of

Regulation S-K under the Act, and no opinion is expressed herein as to any matter pertaining to the contents of the Registration Statement or the prospectus forming part of the Registration Statement,

other than as expressly stated herein with respect to the Selling Securityholder Shares.

Based upon and subject to the foregoing

examination and in reliance thereon, and subject to the qualifications, assumptions and limitations set forth in this opinion letter, we are of the opinion that the Selling Securityholder Shares are validly issued, fully paid and non-assessable.

This opinion is subject to the effects of (a) bankruptcy, insolvency, fraudulent

conveyance, fraudulent transfer, voidable transfer, reorganization, liquidation, moratorium or other similar laws relating to or affecting the rights or remedies of creditors generally, (b) the application of general principles of equity

(regardless of whether enforcement is considered in a proceeding in equity or at law) and (c) an implied covenant of good faith and fair dealing. Furthermore, the manner in which any particular issue relating to this opinion would be treated in

any actual court case would depend in part on facts and circumstances particular to the case and would also depend on how the court involved choose to exercise the wide discretionary authority generally available to it.

We express no opinion as to whether, or the extent to which, the laws of any particular jurisdiction apply to the subject matter hereof.

We have not considered, and we express no opinion as to, any law other than the General Corporation Law of the State of Delaware (including

the statutory provisions and reported judicial decisions interpreting the foregoing) as in effect on the date hereof.

We hereby consent to be named in the Prospectus Supplement under the caption “Validity

of the Shares of Common Stock” as the attorneys who passed upon the legality of the Selling Securityholder Shares being registered pursuant to the Prospectus Supplement and to the filing of a copy of this opinion as Exhibit 5.1 to the

Current Report on Form 8-K to be filed by the Company on the date hereof. In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7

of the Act. This opinion speaks as of its date, and we undertake no (and hereby disclaim any) obligation to update this opinion.

Very

truly yours,

/s/ Wachtell, Lipton, Rosen & Katz

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 8

v3.26.1

Document and Entity Information

Apr. 23, 2026

Document And Entity Information [Line Items]

Entity Registrant Name

CAPITAL ONE FINANCIAL CORP

Amendment Flag

false

Entity Central Index Key

0000927628

Document Type

8-K

Document Period End Date

Apr. 23, 2026

Entity Incorporation State Country Code

DE

Entity File Number

001-13300

Entity Tax Identification Number

54-1719854

Entity Address, Address Line One

1680 Capital One Drive

Entity Address, City or Town

McLean

Entity Address, State or Province

VA

Entity Address, Postal Zip Code

22102

City Area Code

(703)

Local Phone Number

720-1000

Written Communications

false

Soliciting Material

false

Pre Commencement Tender Offer

false

Pre Commencement Issuer Tender Offer

false

Entity Emerging Growth Company

false

Common Stock [Member]

Document And Entity Information [Line Items]

Security 12b Title

Common Stock (par value $.01 per share)

Trading Symbol

COF

Security Exchange Name

NYSE

Series I Preferred Stock [Member]

Document And Entity Information [Line Items]

Security 12b Title

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series I

Trading Symbol

COF PRI

Security Exchange Name

NYSE

Series J Preferred Stock [Member]

Document And Entity Information [Line Items]

Security 12b Title

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series J

Trading Symbol

COF PRJ

Security Exchange Name

NYSE

Series K Preferred Stock [Member]

Document And Entity Information [Line Items]

Security 12b Title

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series K

Trading Symbol

COF PRK

Security Exchange Name

NYSE

Series L Preferred Stock [Member]

Document And Entity Information [Line Items]

Security 12b Title

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series L

Trading Symbol

COF PRL

Security Exchange Name

NYSE

Series N Preferred Stock [Member]

Document And Entity Information [Line Items]

Security 12b Title

Depositary Shares, Each Representing a 1/40th Interest in a Share of Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series N

Trading Symbol

COF PRN

Security Exchange Name

NYSE

Senior Notes [Member]

Document And Entity Information [Line Items]

Security 12b Title

1.650% Senior Notes Due 2029

Trading Symbol

COF29

Security Exchange Name

NYSE

X

- References

No definition available.

+ Details

Name:

cof_DocumentAndEntityInformationLineItems

Namespace Prefix:

cof_

Data Type:

xbrli:stringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

na

Period Type:

duration

X

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=cof_SeriesIPreferredStockMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=cof_SeriesJPreferredStockMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=cof_SeriesKPreferredStockMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=cof_SeriesLPreferredStockMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=cof_SeriesNPreferredStockMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=us-gaap_SeniorNotesMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type: