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Form 8-K

sec.gov

8-K — FS KKR Capital Corp

Accession: 0001104659-26-071409

Filed: 2026-06-08

Period: 2026-06-08

CIK: 0001422183

Item: Entry into a Material Definitive Agreement

Item: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

8-K — tm2617105d1_8k.htm (Primary)

EX-4.1 — EXHIBIT 4.1 (tm2617105d1_ex4-1.htm)

EX-5.1 — EXHIBIT 5.1 (tm2617105d1_ex5-1.htm)

EX-5.2 — EXHIBIT 5.2 (tm2617105d1_ex5-2.htm)

EX-99.1 — EXHIBIT 99.1 (tm2617105d1_ex99-1.htm)

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GRAPHIC (tm2617105d1_ex5-1img002.jpg)

GRAPHIC (tm2617105d1_ex99-1img001.jpg)

GRAPHIC (tm2617105d1_ex5-2img001.jpg)

GRAPHIC (tm2617105d1_ex5-2img002.jpg)

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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

Date of Report (Date of earliest event reported):

June 8, 2026

FS KKR Capital Corp.

(Exact name of Registrant as specified in its

charter)

Maryland

814-00757

26-1630040

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

3025 JFK Boulevard, OFC 500

Philadelphia, Pennsylvania

19104

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including

area code: (215) 495-1150

None

(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:

¨

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

FSK

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 1.01. Entry into a Material Definitive Agreement.

On June 8, 2026, FS KKR Capital Corp. (the “Company”)

and U.S. Bank Trust Company, National Association (as successor-in-interest to U.S. Bank National Association) (the “Trustee”),

entered into a Sixteenth Supplemental Indenture (the “Sixteenth Supplemental Indenture”) to the Indenture, dated July 14,

2014, between the Company and the Trustee (the “Base Indenture”; and together with the Sixteenth Supplemental Indenture, the

“Indenture”). The Sixteenth Supplemental Indenture relates to the Company’s issuance of $900,000,000 aggregate principal

amount of its 7.500% notes due 2031 (the “Notes”).

The Notes will mature on August 1, 2031 and may

be redeemed in whole or in part at the Company’s option at any time or from time to time at the redemption prices set forth in the

Indenture. The Notes bear interest at a rate of 7.500% per year payable semi-annually in arrears on February 1 and August 1 of each

year, beginning on February 1, 2027. The Notes are general unsecured obligations of the Company that rank senior in right of payment to

all of the Company’s existing and future indebtedness that is expressly subordinated in right of payment to the Notes, rank pari

passu with all existing and future unsecured unsubordinated indebtedness issued by the Company, rank effectively junior to any of

the Company’s secured indebtedness (including unsecured indebtedness that the Company later secures) to the extent of the value

of the assets securing such indebtedness, and rank structurally junior to all existing and future indebtedness (including trade payables)

incurred by the Company’s subsidiaries, financing vehicles or similar facilities.

The Indenture contains certain covenants, including

covenants requiring the Company to comply with the asset coverage requirements of Section 18(a)(1)(A) as modified by Section 61(a)(1)

and (2) of the Investment Company Act of 1940, as amended, whether or not it is subject to those requirements, and to provide financial

information to the holders of the Notes and the Trustee if the Company is no longer subject to the reporting requirements under the Securities

Exchange Act of 1934, as amended. These covenants are subject to important limitations and exceptions that are described in the Indenture.

In addition, on the occurrence of a “change

of control repurchase event,” as defined in the Indenture, the Company will generally be required to make an offer to purchase the

outstanding Notes at a price equal to 100% of the principal amount of such Notes plus accrued and unpaid interest to the repurchase date.

The Notes were offered and sold in an offering

registered under the Securities Act of 1933, as amended, pursuant to the Registration Statement on Form N-2 (File No. 333-282226)

(the “Registration Statement”), the prospectus supplement dated June 1, 2026 and the pricing term sheet filed with the U.S.

Securities and Exchange Commission on June 2, 2026. The transaction closed on June 8, 2026. The net proceeds to the Company were approximately

$890.0 million, after deducting the underwriting discounts and commissions of $9.0 million payable by the Company and estimated offering

expenses of approximately $1.0 million payable by the Company. The Company intends to use the net proceeds for general corporate purposes,

including potentially repaying outstanding indebtedness under its credit facilities and certain notes.

The foregoing descriptions of the Sixteenth Supplemental

Indenture and the Notes do not purport to be complete and are qualified in their entirety by reference to the full text of the Sixteenth

Supplemental Indenture and the Notes, respectively, each filed as exhibits hereto and incorporated by reference herein.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The information required by Item 2.03 contained

in Item 1.01 of this Current Report on Form 8-K is incorporated herein by reference.

Item 7.01. Regulation FD Disclosure.

On June 8, 2026, the Company issued

a press release, a copy of which is attached hereto as Exhibit 99.1.

The information in this Item 7.01, including

Exhibit 99.1 and the information set forth therein, is deemed to have been furnished to, and shall not be deemed to be “filed”

with, the U.S. Securities and Exchange Commission.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

EXHIBIT

NUMBER

DESCRIPTION

4.1

Sixteenth Supplemental Indenture, dated as of June 8, 2026, relating to the 7.500% Notes due 2031, by and between the Company and U.S. Bank Trust Company National Association (as successor-in-interest to U.S. Bank National Association), as trustee.

4.2

Form of 7.500% Notes due 2031. (Incorporated by reference to Exhibit 4.1 hereto.)

5.1

Opinion of Dechert LLP.

5.2

Opinion of Miles & Stockbridge P.C.

23.1

Consent of Dechert LLP (included in Exhibit 5.1).

23.2

Consent of Miles & Stockbridge P.C. (included in Exhibit 5.2).

99.1

Press Release, dated June 8, 2026.

SIGNATURE

Pursuant to the requirements of the Securities

Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly

authorized.

FS KKR Capital Corp.

Date:  June 8, 2026

By:

/s/ Stephen Sypherd

Stephen Sypherd

General Counsel and Secretary

EX-4.1 — EXHIBIT 4.1

EX-4.1

Filename: tm2617105d1_ex4-1.htm · Sequence: 2

Exhibit 4.1

Execution

Version

SIXTEENTH SUPPLEMENTAL INDENTURE

between

FS KKR CAPITAL CORP.

and

U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION,

as Trustee

Dated as of June 8, 2026

SIXTEENTH SUPPLEMENTAL INDENTURE

THIS SIXTEENTH SUPPLEMENTAL INDENTURE, dated as

of June 8, 2026, is between FS KKR Capital Corp., a Maryland corporation (the “Company”), and U.S. Bank Trust

Company, National Association, as trustee (the “Trustee”). All capitalized terms used herein shall have the meaning

set forth in the Base Indenture (as defined below) unless otherwise defined herein.

RECITALS OF THE COMPANY

The Company and the Trustee executed and delivered

an Indenture, dated as of July 14, 2014 (the “Base Indenture”), as amended and supplemented by the First Supplemental

Indenture, dated as of July 14, 2014, the Second Supplemental Indenture, dated as of December 3, 2014, the Third Supplemental

Indenture, dated as of April 30, 2015, the Fourth Supplemental Indenture, dated as of July 15, 2019, the Fifth Supplemental

Indenture, dated as of November 20, 2019, the Sixth Supplemental Indenture, dated as of April 30, 2020, the Seventh Supplemental

Indenture, dated as of December 10, 2020, the Eighth Supplemental Indenture, dated as of June 17, 2021, the Ninth Supplemental

Indenture, dated as of October 12, 2021, the Tenth Supplemental Indenture, dated as of October 12, 2021, the Eleventh Supplemental

Indenture, dated as of January 18, 2022, the Twelfth Supplemental Indenture, dated as of November 21, 2023, the Thirteenth Supplemental

Indenture, dated as of June 6, 2024, the Fourteenth Supplemental Indenture, dated as of November 20, 2024, the Fifteenth Supplemental

Indenture, dated as of September 25, 2025, and this Sixteenth Supplemental Indenture (the “Sixteenth Supplemental Indenture”

and, together with the Base Indenture, the “Indenture”), to provide for the issuance by the Company from time to time

of the Company’s unsecured debentures, notes or other evidences of indebtedness (the “Securities”), to be issued

in one or more series as provided in the Base Indenture.

The Company desires to issue and sell $900,000,000

aggregate principal amount of the Company’s 7.500% Notes due 2031 (the “Notes”).

Sections 901(4) and 901(6) of the Base

Indenture provide that without the consent of Holders of the Securities of any series issued under the Base Indenture (as supplemented

or amended from time to time by one or more indentures supplemental thereto), the Company, when authorized by or pursuant to a Board Resolution,

and the Trustee, at any time and from time to time, may enter into one or more indentures supplemental to the Base Indenture to (i) change

or eliminate any of the provisions of the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental

thereto) when there is no Security Outstanding of any series created prior to the execution of the supplemental indenture that is entitled

to the benefit of such provision and (ii) establish the form or terms of Securities of any series as permitted by Section 201

and Section 301 of the Base Indenture.

The Company desires to establish the form and terms

of the Notes and to modify, alter, supplement and change certain provisions of the Base Indenture for the benefit of the Holders of the

Notes (subject to amendment as may be provided in a future supplemental indenture to the Indenture (“Future Supplemental Indenture”)).

The Company has duly authorized the execution and

delivery of this Sixteenth Supplemental Indenture to provide for the issuance of the Notes and all acts and things necessary to make this

Sixteenth Supplemental Indenture a valid, binding, and legal obligation of the Company and to constitute a valid agreement of the Company,

in accordance with its terms, have been done and performed.

NOW, THEREFORE, for and in consideration of the

premises and the purchase of the Notes by the Holders thereof, it is mutually agreed, for the equal and proportionate benefit of all Holders

of the Notes, as follows:

ARTICLE I

TERMS OF THE NOTES

Section 1.01.        The

following terms relating to the Notes are hereby established:

(a)            The

Notes shall constitute a series of Senior Securities having the title “7.500% Notes due 2031”. The Notes shall bear a CUSIP

number of 302635 AR8 and an ISIN number of US302635AR85.

(b)            The

aggregate principal amount of the Notes that may be initially authenticated and delivered under the Indenture (except for Notes authenticated

and delivered upon registration of, transfer of, or in exchange for, or in lieu of, other Notes pursuant to Sections 304, 305, 306, 906,

1107 or 1305 of the Base Indenture, and except for any Securities that, pursuant to Section 303 of the Base Indenture, are deemed

never to have been authenticated and delivered under the Indenture) shall be $900,000,000. Under a Board Resolution, Officers’ Certificate

pursuant to Board Resolutions or an indenture supplement, the Company may from time to time, without the consent of the Holders of Notes,

issue additional Notes (in any such case “Additional Notes”) having the same ranking and the same interest rate, maturity

and other terms as the Notes; provided that, if such Additional Notes are not fungible with the Notes (or any other tranche of

Additional Notes) for U.S. federal income tax purposes, then such Additional Notes will have different CUSIP numbers from the Notes (and

any such other tranche of Additional Notes). Any Additional Notes and the existing Notes will constitute a single series under the Indenture

and all references to the relevant Notes herein shall include the Additional Notes unless the context otherwise requires.

(c)            The

entire outstanding principal of the Notes shall be payable on August 1, 2031, unless earlier redeemed or repurchased in accordance

with the provisions of this Sixteenth Supplemental Indenture.

(d)            The

rate at which the Notes shall bear interest shall be 7.500% per annum (the “Applicable Interest Rate”). The date from

which interest shall accrue on the Notes shall be June 8, 2026, or the most recent Interest Payment Date to which interest has been

paid or provided for; the Interest Payment Dates for the Notes shall be February 1 and August 1 of each year, commencing February 1,

2027 (if an Interest Payment Date falls on a day that is not a Business Day, then the applicable interest payment will be made on the

next succeeding Business Day and no additional interest will accrue as a result of such delayed payment); the initial interest period

will be the period from and including June 8, 2026 (or the most recent Interest Payment Date to which interest has been paid or provided

for), to, but excluding, the initial Interest Payment Date, and the subsequent interest periods will be the periods from and including

an Interest Payment Date to, but excluding, the next Interest Payment Date or the Stated Maturity, as the case may be. Interest so payable,

and punctually paid or duly provided for, on any Interest Payment Date, will be paid to the Person in whose name the Note (or one or more

Predecessor Securities) is registered at 5:00 p.m. New York City time, or the close of business, on the Regular Record Date for such

interest, which shall be January 15 and July 15 (whether or not a Business Day), as the case may be, next preceding such Interest

Payment Date. Payment of principal of (and premium, if any, on) and any such interest on the Notes will be made at the office of the Trustee

located at 1735 Market Street, 43rd Floor, Philadelphia, PA 19103 and at such other address as designated by the Trustee, in

such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts;

provided, however, that at the option of the Company, payment of interest may be made by check mailed to the address of

the Person entitled thereto as such address shall appear in the Security Register. Interest on the Notes will be computed on the basis

of a 360-day year of twelve 30-day months.

- 2 -

(e)            The

Notes shall be initially issuable in global form (each such Note, a “Global Note”). The Global Notes and the Trustee’s

certificate of authentication thereon shall be substantially in the form of Exhibit A to this Sixteenth Supplemental Indenture.

Each Global Note shall represent the outstanding Notes as shall be specified therein and each shall provide that it shall represent the

aggregate amount of outstanding Notes from time to time endorsed thereon and that the aggregate amount of outstanding Notes represented

thereby may from time to time be reduced or increased, as appropriate, to reflect exchanges and redemptions. Any endorsement of a Global

Note to reflect the amount of any increase or decrease in the amount of outstanding Notes represented thereby shall be made by the Trustee

or the Security Registrar, in accordance with Sections 203 and 305 of the Base Indenture.

(f)            The

depositary for such Global Notes (the “Depositary”) shall be The Depository Trust Company, New York, New York,

until a successor shall have been appointed and becomes such person, and thereafter, Depositary shall mean or include such

successor. The Security Registrar with respect to the Global Notes shall be the Trustee.

(g)            The

Notes shall be defeasible pursuant to Section 1402 or Section 1403 of the Base Indenture. Covenant defeasance contained in Section 1403

of the Base Indenture shall apply to the covenants contained in Sections 1007 and 1008 of the Indenture.

(h)            The

Notes shall be redeemable pursuant to Section 1101 of the Base Indenture and as follows:

(i)            Prior

to May 1, 2031 (three months prior to their maturity date) (the “Par Call Date”), the Company may redeem the Notes

at its option, in whole or in part, at any time and from time to time, at a Redemption Price (expressed as a percentage of principal amount

and rounded to three decimal places) equal to the greater of:

(A) (1) the sum of the present values of the remaining scheduled payments of principal and interest

thereon discounted to the Redemption Date (assuming the Notes matured on the Par Call Date) on a semi-annual basis (assuming a 360-day

year consisting of twelve 30-day months) at the Treasury Rate plus 50 basis points less (2) interest accrued to the Redemption Date,

and

(B) 100% of the principal amount of the Notes to be redeemed,

plus, in either case, accrued and unpaid interest thereon

to the Redemption Date.

(ii)            On

or after the Par Call Date, the Company may redeem the Notes, in whole or in part, at any time and from time to time, at a Redemption

Price equal to 100% of the principal amount of the Notes being redeemed plus accrued and unpaid interest thereon to the Redemption Date.

For purposes of calculating the Redemption Price

in connection with the redemption of the Notes, on any Redemption Date, the following terms have the meanings set forth below:

“Treasury

Rate” means, with respect to any Redemption Date, the yield determined by the Company in accordance with the following

two paragraphs.

The Treasury Rate shall be determined by the Company

after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors

of the Federal Reserve System), on the third business day preceding the Redemption Date based upon the yield or yields for the most recent

day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal

Reserve System designated as “Selected Interest Rates (Daily) - H.15” (or any successor designation or publication) (“H.15”)

under the caption “U.S. government securities–Treasury constant maturities–Nominal” (or any successor caption

or heading). In determining the Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity

on H.15 exactly equal to the period from the Redemption Date to the Par Call Date (the “Remaining Life”); or (2) if

there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields – one yield corresponding

to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15

immediately longer than the Remaining Life – and shall interpolate to the Par Call Date on a straight-line basis (using the actual

number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity

on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining

Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity

date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the Redemption Date.

- 3 -

If on the third business day preceding the

Redemption Date H.15 or any successor designation or publication is no longer published, the Company shall calculate the Treasury

Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York City time, on the

second business day preceding such Redemption Date of the United States Treasury security maturing on, or with a maturity that is

closest to, the Par Call Date, as applicable. If there is no United States Treasury security maturing on the Par Call Date but there

are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity

date preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United

States Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury

securities maturing on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding

sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury

security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury

securities at 11:00 a.m., New York City time. In determining the Treasury Rate in accordance with the terms of this paragraph, the

semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked

prices (expressed as a percentage of principal amount) at 11:00 a.m., New York City time, of such United States Treasury security,

and rounded to three decimal places.

The Company’s actions and determinations

in determining the Redemption Price shall be conclusive and binding for all purposes, absent manifest error.

(i)            Notice

of redemption shall be given in writing and mailed, first-class postage prepaid or by overnight courier guaranteeing next-day delivery,

to each Holder of the Notes to be redeemed, not less than ten (10) nor more than sixty (60) days prior to the Redemption Date, at

the Holder’s address appearing in the Security Register. All notices of redemption shall contain the information set forth in Section 1104

of the Base Indenture.

(ii)            Any

exercise of the Company’s option to redeem the Notes will be done in compliance with the Investment Company Act, to the extent applicable.

(iii)            If

the Company elects to redeem only a portion of the Notes, the particular Notes to be redeemed will be selected in accordance with the

applicable procedures of the Trustee and, so long as the Notes are registered to the Depositary or its nominee, the Depositary; provided,

however, that no such partial redemption shall reduce the portion of the principal amount of a Note not redeemed to less than $2,000.

(iv)            Unless

the Company defaults in payment of the Redemption Price, on and after the Redemption Date, interest will cease to accrue on the Notes

called for redemption hereunder.

(i)            The

Notes shall not be subject to any sinking fund pursuant to Section 1201 of the Base Indenture.

(j)            The

Notes shall be issuable in denominations of $2,000 and integral multiples of $1,000 in excess thereof.

(k)            Holders

of the Notes will not have the option to have the Notes repaid prior to the Stated Maturity other than in accordance with Article Thirteen

of the Indenture.

- 4 -

ARTICLE II

DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

Section 2.01.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of the Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Article One of the Base Indenture shall be amended by adding the following defined terms to Section 101

in appropriate alphabetical sequence, as follows:

“Change of Control” means the occurrence

of any of the following:

(1) the direct or indirect sale, lease, transfer,

conveyance or other disposition (other than by way of merger or consolidation) in one or a series of related transactions, of all or substantially

all of the assets of the Company and its Controlled Subsidiaries taken as a whole to any “person” or “group” (as

those terms are used in Section 13(d)(3) of the Exchange Act), other than to any Permitted Holders; provided that, for

the avoidance of doubt, a pledge of assets pursuant to any secured debt instrument of the Company or its Controlled Subsidiaries shall

not be deemed to be any such sale, lease, transfer, conveyance or disposition;

(2) the consummation of any transaction (including,

without limitation, any merger or consolidation) the result of which is that any “person” or “group” (as those

terms are used in Section 13(d)(3) of the Exchange Act) (other than any Permitted Holders) becomes the “beneficial owner”

(as defined in Rules 13d-3 and 13d-5 promulgated under the Exchange Act), directly or indirectly, of more than 50% of the outstanding

Voting Stock of the Company, measured by voting power rather than number of shares; or

(3) the approval by the Company’s stockholders

of any plan or proposal relating to the liquidation or dissolution of the Company.

“Change of Control Repurchase Event”

means the occurrence of a Change of Control and a Rating Event.

“Controlled Subsidiary” means

any Subsidiary of the Company, 50% or more of the outstanding equity interests of which are owned by the Company and its direct or indirect

Subsidiaries and of which the Company possesses, directly or indirectly, the power to direct or cause the direction of the management

or policies, whether through the ownership of voting equity interests, by agreement or otherwise.

“Fitch” means Fitch Ratings, Inc.,

also known as Fitch Ratings, or any successor thereto.

“GAAP” means generally accepted

accounting principles in the United States set forth in the opinions and pronouncements of the Accounting Principles Board of the American

Institute of Certified Public Accountants, the opinions and pronouncements of the Public Company Accounting Oversight Board and the statements

and pronouncements of the Financial Accounting Standards Board or in such other statements by such other entity as have been approved

by a significant segment of the accounting profession in the United States, which are in effect from time to time.

“Investment Company Act” means

the Investment Company Act of 1940, as amended, and the rules, regulations and interpretations promulgated thereunder, to the extent applicable,

and any statute successor thereto.

“Investment

Grade” means a rating of BBB- or better by Fitch (or its equivalent under any successor rating categories of Fitch) and Baa3

or better by Moody’s (or its equivalent under any successor rating categories of Moody’s) (or, in each case, if such Rating

Agency ceases to rate the Notes for reasons outside of the Company’s control, the equivalent investment grade credit rating from

any Rating Agency selected by the Company as a replacement Rating Agency).

“Moody’s” means Moody’s

Investors Service or any successor thereto.

- 5 -

“Permitted Holders” means (i) the

Company, (ii) one or more of the Company’s Controlled Subsidiaries and (iii) FS/KKR Advisor, LLC, any Affiliate of FS

KKR Advisor, LLC or any entity that is managed by FS/KKR Advisor, LLC that is organized under the laws of a jurisdiction located in the

United States of America and in the business of managing or advising clients.

“Rating

Agency” means (1) each of Fitch and Moody’s; and (2) if either Fitch or Moody’s ceases to rate

the Notes or fails to make a rating of the Notes publicly available for reasons outside of the Company’s control, a “nationally

recognized statistical rating organization” as defined in Section 3(a)(62) of the Exchange Act selected by the Company as a

replacement agency for Fitch or Moody’s, or both, as the case may be.

“Significant Subsidiary” means

any Subsidiary that would be a “significant subsidiary” as defined in Article 1, Rule 1-02 of Regulation S-X under

the Exchange Act, as such regulation is in effect on the date of this Indenture (but excluding any Subsidiary which is (a) a non-recourse

or limited recourse Subsidiary, (b) a bankruptcy remote special purpose vehicle or (c) is not consolidated with the Company

for purposes of GAAP).

“Rating Event” means the occurrence

of a decrease in the rating of the Notes by both of the Rating Agencies (including gradations within the ratings categories, as well as

between categories) within 60 days following public notice of the occurrence of a Change of Control (which 60-day period shall be extended

so long as the rating of the Notes is under publicly announced consideration for possible downgrade by either of the Rating Agencies);

provided, however, that in the event that both of the Ratings Agencies have assigned an Investment Grade rating to the Notes prior to

a Change of Control, then “Rating Event” means the Notes are downgraded below Investment Grade by both of the Rating Agencies

on any date from the date of the public notice of an arrangement that results in a Change of Control until the end of the 60-day period

following public notice of the occurrence of a Change of Control (which period shall be extended so long as the rating of the Notes is

under publicly announced consideration for possible downgrade by either of the Rating Agencies); provided further that a Rating Event

otherwise arising by virtue of a particular reduction in rating shall not be deemed to have occurred in respect of a particular Change

of Control (and thus shall not be deemed a Rating Event for purposes of the definition of Change of Control Repurchase Event hereunder)

if the Rating Agencies making the reduction in rating to which this definition would otherwise apply do not announce or publicly confirm

or inform the trustee in writing at its request that the reduction was the result, in whole or in part, of any event or circumstance comprised

of or arising as a result of, or in respect of, the applicable Change of Control (whether or not the applicable Change of Control shall

have occurred at the time of the Rating Event).

“Voting Stock” as applied

to stock of any Person, means shares, interests, participations or other equivalents in the equity interest (however designated) in

such Person having ordinary voting power for the election of a majority of the directors (or the equivalent) of such Person, other

than shares, interests, participations or other equivalents having such power only by reason of the occurrence of a contingency.

Section 2.02.         Except

as may be provided in a Future Supplemental Indenture, for the benefit of the Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Article One of the Base Indenture shall be amended by amending and restating the definitions of “Business

Day” and “Subsidiary” in Section 101 as follows:

“Business Day” means, with respect

to any Note, any day other than a Saturday, Sunday or a day on which banking institutions in New York are authorized or obligated by law

or executive order to close.

“Subsidiary” means (1) any

corporation a majority of the outstanding voting stock of which is owned, directly or indirectly, by the Company or by one or more other

Subsidiaries of the Company, (2) any other Person (other than a corporation) in which such Person, one or more Subsidiaries of such

Person, or such Person and one or more Subsidiaries of such Person, directly or indirectly, at the date of determination thereof has a

majority ownership interest, or (3) a partnership in which such Person or Subsidiary of such Person is, at the time, a general partner

and in which such Person, directly or indirectly, at the date of determination thereof has a majority ownership interest. For the purposes

of this definition, “voting stock” mean stock having voting power for the election of directors, whether at all times or only

so long as no senior class of stock has such voting power by reason of any contingency. In addition, for purposes of this definition,

“Subsidiary” shall exclude any investments held by the Company in the ordinary course of business which are not, under GAAP,

consolidated on the financial statements of the Company and its Subsidiaries.

- 6 -

ARTICLE III

SECURITIES FORMS

Section 3.01.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of the Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Article Two of the Base Indenture shall be amended by adding the following new Section 204 thereto,

as set forth below:

“Section 204.         Certificated

Notes.

Notwithstanding anything to the contrary

in the Indenture, Notes in physical, certificated form will be issued and delivered to each person that the Depositary identifies as a

beneficial owner of the related Notes only if:

(a)           the

Depositary notifies the Company at any time that it is unwilling or unable to continue as depositary for the Notes in global form and

a successor depositary is not appointed within 90 days;

(b)           the

Depositary ceases to be registered as a clearing agency under the Exchange Act and a successor depositary is not appointed within 90 days;

or

(c)            an

Event of Default with respect to the Notes has occurred and is continuing and such beneficial owner requests that its Notes be issued

in physical, certificated form.”

ARTICLE IV

REMEDIES

Section 4.01.         Except

as may be provided in a Future Supplemental Indenture, for the benefit of the Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Article Five of the Base Indenture shall be amended by replacing clause (2) of Section 501 thereof

with the following:

“(2)       default

in the payment of the principal of (or premium, if any, on) any Note when it becomes due and payable at its Maturity including upon any

Redemption Date or required repurchase date; or”

- 7 -

Section 4.02.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of the Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Section 501 of the Base Indenture shall be amended by replacing clause (4) thereof with the following:

“(4)         default

in the performance, or breach, of any covenant or agreement of the Company in this Indenture or the Notes (other than a covenant or agreement

a default in whose performance or whose breach is elsewhere in this Section specifically dealt with or which has expressly been included

in this Indenture solely for the benefit of a series of securities other than the Notes), and continuance of such default or breach for

a period of 60 consecutive days after there has been given, by registered or certified mail, to the Company by the Trustee or to the Company

and the Trustee by the Holders of at least 25% in 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” hereunder; or”

Section 4.03.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of the Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Article Five of the Base Indenture shall be amended by adding as clause (9) of Section 501 thereof

the following:

“(9)         default by the Company or

any of its Significant Subsidiaries, with respect to any mortgage, agreement or other instrument under which there may be outstanding,

or by which there may be secured or evidenced, any indebtedness for money borrowed in excess of $100 million in the aggregate of the Company

and/or any such Significant Subsidiary, whether such indebtedness now exists or shall hereafter be created (i) resulting in such

indebtedness becoming or being declared due and payable or (ii) constituting a failure to pay the principal or interest of any such

debt when due and payable at its stated maturity, upon required repurchase, upon declaration of acceleration or otherwise, unless, in

either case, such indebtedness is discharged, or such acceleration is rescinded, stayed or annulled, within a period of 30 calendar days

after written notice of such failure is given to the Company by the Trustee or to the Company and the Trustee by the Holders of at least

25% in aggregate principal amount of the Notes then Outstanding.”

Section 4.04.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Section 501 of the Base Indenture shall be amended by replacing clause (7) thereof with the following:

“(7)          if, pursuant to Section 18(a)(1)(C)(ii) and

Section 61 of the Investment Company Act, on the last business day of each of 24 consecutive calendar months, any class of securities

shall have an asset coverage (as such term is used in the Investment Company Act) of less than 100% giving effect to any exemptive relief

granted to the Company by the Commission;”

Section 4.05.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Article Five of the Base Indenture shall be amended by amending clause (6) of Section 501 thereof

as follows: the words “90 consecutive days” in the final clause thereof shall be replaced with the words “60 consecutive

days”.

Section 4.06.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of the Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Article Five of the Base Indenture shall be amended by replacing the first paragraph of Section 502

thereof with the following:

“If an Event of Default with respect to the Notes occurs

and is continuing, then and in every such case (other than an Event of Default specified in Section 501(5) or 501(6)), the Trustee

or the Holders of not less than 25% in principal amount of the Outstanding Notes may (and the Trustee shall at the request of such Holders)

declare the principal of all the Outstanding Notes to be due and payable immediately, by a notice in writing to the Company (and to the

Trustee if given by the Holders), and upon any such declaration such principal or specified portion thereof shall become immediately due

and payable; provided that 100% of the principal of, and accrued and unpaid interest on, the Notes will automatically become due and payable

in the case of an Event of Default specified in Section 501(5) or 501(6) hereof.”

Section 4.07.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of Holders of the Notes but no other series of Securities

under the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now

or hereafter issued and Outstanding, Article Five of the Base Indenture shall be amended by replacing clause (3) of

Section 512 thereof with the following:

“(3)         the Trustee need not take

any action that it determines in good faith may involve it in personal liability or be unjustly prejudicial to the Holders of the Notes

not consenting; and”

- 8 -

ARTICLE V

THE TRUSTEE

Section 5.01.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now of hereafter

issued and Outstanding, Article Six of the Base Indenture shall be amended by replacing the final proviso of Section 601 thereof

with the following:

“and provided further that in the case of any

Default or breach of the character specified in Section 501(4) with respect to the Securities of such series, no such notice

to Holders shall be given until at least 60 days after the occurrence thereof”

ARTICLE VI

COVENANTS

Section 6.01.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Article Ten of the Base Indenture shall be amended by replacing clause (1) of Section 1005 thereof

with the following:

“(1)         The Company will deliver

to the Trustee within 120 days after the end of each fiscal year ending after the date hereof (which fiscal year ends on December 31),

so long as any Notes are Outstanding hereunder, a brief Officers’ Certificate as to the knowledge of the signers of the Company’s

compliance with all of the terms, provisions or conditions of this Indenture. For purposes of this Section 1005, such compliance

shall be determined without regard to any period of grace or requirement of notice under this Indenture.”

Section 6.02.        Except

as may be provided in a Future Supplemental Indenture, for the benefit of the Holders of the Notes but no other series of Securities under

the Base Indenture (as supplemented or amended from time to time by one or more indentures supplemental thereto), whether now or hereafter

issued and Outstanding, Article Ten of the Base Indenture shall be amended by adding the following new Sections 1007 and 1008 thereto,

each as set forth below:

“Section 1007        Section 18(a)(1)(A) of

the Investment Company Act.

The Company hereby agrees that for the period of

time during which the Notes are Outstanding, the Company will not violate, whether or not it is subject to, Section 18(a)(1)(A) of

the Investment Company Act as modified by Section 61(a)(1) and (2) of the Investment Company Act or any successor provisions,

as such obligations may be amended or superseded, giving effect to any exemptive relief granted to the Company by the Securities and Exchange

Commission.”

“Section 1008        Commission

Reports and Reports to Holders.

If, at any time, the Company is not subject to

the reporting requirements of Sections 13 or 15(d) of the Exchange Act to file any periodic reports with the Commission, the Company

agrees to furnish to the Holders of the Notes and the Trustee for the period of time during which the Notes are Outstanding: (i) within

90 days after the end of each fiscal year of the Company, audited annual consolidated financial statements of the Company and (ii) within

45 days after the end of each fiscal quarter of the Company (other than the Company’s fourth fiscal quarter), unaudited interim

consolidated financial statements of the Company. All such financial statements shall be prepared, in all material respects, in accordance

with GAAP, as applicable.”

- 9 -

ARTICLE VII

CONSOLIDATION,

MERGER, CONVEYANCE OR TRANSFER

Except as may be provided in a Future Supplemental

Indenture, for the benefit of the Holders of the Notes but no other series of Securities under the Base Indenture (as supplemented or

amended from time to time by one or more indentures supplemental thereto), whether now or hereafter issued and Outstanding, Article Eight

of the Base Indenture shall be amended by replacing Section 801 with the following:

“Section 801          Merger,

Consolidation or Sale of Assets.

The Company shall not merge or consolidate with

or into any other Person (other than a merger of a wholly owned Subsidiary of the Company into the Company), or sell, transfer, lease,

convey or otherwise dispose of all or substantially all of its property (provided that, for the avoidance of doubt, a pledge of assets

pursuant to any secured debt instrument of the Company or its Controlled Subsidiaries shall not be deemed to be any such sale, transfer,

lease, conveyance or disposition) in any one transaction or series of related transactions unless:

(1) the Company shall be the surviving Person

(the “Surviving Person”) or the Surviving Person (if other than the Company) formed by such merger or consolidation

or to which such sale, transfer, lease, conveyance or disposition is made shall be a corporation or limited liability company organized

and existing under the laws of the United States of America or any state or territory thereof;

(2) the Surviving Person (if other than the

Company) expressly assumes, by supplemental indenture in form reasonably satisfactory to the Trustee, executed and delivered to the Trustee

by such Surviving Person, the due and punctual payment of the principal of, and premium, if any, and interest on, all the Notes Outstanding,

and the due and punctual performance and observance of all the covenants and conditions of this Indenture to be performed by the Company;

(3) immediately before and immediately after

giving effect to such transaction or series of related transactions, no Default or Event of Default shall have occurred and be continuing;

and

(4) the Company shall deliver, or cause to

be delivered, to the Trustee, an Officers’ Certificate and an Opinion of Counsel, each stating that such transaction and the supplemental

indenture, if any, in respect thereto, comply with this Section 801 and that all conditions precedent in this Indenture relating

to such transaction have been complied with.

For the purposes of this Section 801, the

sale, transfer, lease, conveyance or other disposition of all the property of one or more Subsidiaries of the Company, which property,

if held by the Company instead of such Subsidiaries, would constitute all or substantially all the property of the Company on a consolidated

basis, shall be deemed to be the transfer of all or substantially all the property of the Company.”

ARTICLE VIII

Offer to Repurchase Upon a Change of Control Repurchase Event

Except as may be provided in a Future Supplemental

Indenture, for the benefit of the Holders of the Notes but no other series of Securities under the Base Indenture (as supplemented or

amended from time to time by one or more indentures supplemental thereto), whether now or hereafter issued and Outstanding, Article Thirteen

of the Base Indenture shall be amended by replacing Sections 1301 to 1305 with the following:

“Section 1301

Change of Control.

If a Change of Control Repurchase Event

occurs, unless the Company shall have exercised its right to redeem the Notes in full, the Company shall make an offer to each

Holder of the Notes to repurchase all or any part (in minimum denominations of $2,000 and integral multiples of $1,000 principal

amount in excess thereof) of that Holder’s Notes at a repurchase price in cash equal to 100% of the aggregate principal amount

of Notes repurchased plus any accrued and unpaid interest on the Notes repurchased to, but not including, the date of purchase.

Within 30 days following any Change of Control Repurchase Event or, at the Company’s option, prior to any Change of Control,

but after the public announcement of the Change of Control, the Company shall mail a notice to each Holder describing the

transaction or transactions that constitute or may constitute the Change of Control Repurchase Event and offering to repurchase

Notes on the payment date specified in the notice, which date will be no earlier than 30 days and no later than 60 days from the

date such notice is mailed. The notice shall, if mailed prior to the date of consummation of the Change of Control, state that the

offer to purchase is conditioned on the Change of Control Repurchase Event occurring on or prior to the payment date specified in

the notice. The Company shall comply with the requirements of Rule 14e-1 promulgated under the Exchange Act and any other

securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase

of the Notes as a result of a Change of Control Repurchase Event.

- 10 -

To the extent that the provisions of any securities

laws or regulations conflict with this Section 1301, the Company shall comply with the applicable securities laws and regulations

and shall not be deemed to have breached its obligations under this Section 1301 by virtue of such conflict.

On the Change of Control Repurchase Event payment

date, subject to extension if necessary to comply with the provisions of the Investment Company Act, the Company shall, to the extent

lawful:

(1) accept for payment all Notes or portions

of Notes properly tendered pursuant to its offer;

(2) deposit

with the Paying Agent an amount equal to the aggregate purchase price in respect of all Notes or portions

of Notes properly tendered; and

(3) deliver

or cause to be delivered to the Trustee the Notes properly accepted, together with an Officers’  Certificate

stating the aggregate principal amount of Notes being purchased by the Company.

The Paying Agent will promptly remit to each Holder

of Notes properly tendered the purchase price for the Notes, and the Trustee will promptly authenticate and mail (or cause to be transferred

by book-entry) to each Holder a new Note equal in principal amount to any unpurchased portion of any Notes surrendered; provided

that each new Note will be in a minimum principal amount of $2,000 or an integral multiple of $1,000 in excess thereof.

If any Repayment Date upon a Change of Control

Repurchase Event falls on a day that is not a Business Day, then the required payment will be made on the next succeeding Business Day

and no additional interest will accrue as a result of such delayed payment.

The Company will not be required to make an offer

to repurchase the Notes upon a Change of Control Repurchase Event if a third party makes an offer in respect of the Notes in the manner,

at the time and otherwise in compliance with the requirements for an offer made by the Company and such third party purchases all Notes

properly tendered and not withdrawn under its offer.”

ARTICLE IX

MISCELLANEOUS

Section 9.01.        This

Sixteenth Supplemental Indenture and the Notes shall be governed by and construed in accordance with the laws of the State of New York,

without regard to principles of conflicts of laws that would cause the application of laws of another jurisdiction. This Sixteenth Supplemental

Indenture is subject to the provisions of the Trust Indenture Act that are required to be part of the Indenture and shall, to the extent

applicable, be governed by such provisions.

Section 9.02.        In

case any provision in this Sixteenth Supplemental Indenture or in the Notes shall be invalid, illegal or unenforceable, the validity,

legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

- 11 -

Section 9.03.        This

Sixteenth Supplemental Indenture may be executed in counterparts, each of which will be an original, but such counterparts will together

constitute but one and the same Sixteenth Supplemental Indenture. The exchange of copies of this Sixteenth Supplemental Indenture and

of signature pages by facsimile, .pdf transmission, email or other electronic means shall constitute effective execution and delivery

of this Sixteenth Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile, .pdf transmission,

email or other electronic means shall be deemed to be their original signatures for all purposes. For the avoidance of doubt, all notices,

approvals, consents, requests and any communications hereunder or with respect to the Notes must be in writing (provided that any communication

sent to the Trustee hereunder must be in the form of a document that is signed manually or by way of a digital signature provided by DocuSign

or Adobe (or such other digital signature provider as specified in writing to the Trustee by the authorized representative)), in English.

The Company agrees to assume all risks arising out of the use of using digital signatures and electronic methods to submit communications

to the Trustee, including without limitation the risk of the Trustee acting on unauthorized instructions, and the risk of interception

and misuse by third parties.

Section 9.04.        The

Base Indenture, as supplemented and amended by this Sixteenth Supplemental Indenture, is in all respects ratified and confirmed, and the

Base Indenture and this Sixteenth Supplemental Indenture shall be read, taken and construed as one and the same instrument with respect

to the Notes. All provisions included in this Sixteenth Supplemental Indenture supersede any conflicting provisions included in the Base

Indenture with respect to the Notes, unless not permitted by law. The Trustee accepts the trusts created by the Base Indenture, as supplemented

by this Sixteenth Supplemental Indenture, and agrees to perform the same upon the terms and conditions of the Base Indenture, as supplemented

by this Sixteenth Supplemental Indenture.

Section 9.05.        The

provisions of this Sixteenth Supplemental Indenture shall become effective as of the date hereof.

Section 9.06.        Notwithstanding

anything else to the contrary herein, the terms and provisions of this Sixteenth Supplemental Indenture shall apply only to the Notes

and shall not apply to any other series of Securities under the Base Indenture (as supplemented or amended from time to time by one or

more indentures supplemental thereto) and this Sixteenth Supplemental Indenture shall not and does not otherwise affect, modify, alter,

supplement or change the terms and provisions of any other series of Securities under the Base Indenture (as supplemented or amended from

time to time by one or more indentures supplemental thereto), whether now or hereafter issued and Outstanding.

Section 9.07.        The

recitals contained herein and in the Notes shall be taken as the statements of the Company, and the Trustee assumes no responsibility

for their correctness. The Trustee makes no representations as to the validity or sufficiency of this Sixteenth Supplemental Indenture,

the Notes or any Additional Notes, except that the Trustee represents that it is duly authorized to execute and deliver this Sixteenth

Supplemental Indenture, authenticate the Notes and any Additional Notes and perform its obligations hereunder. The Trustee shall not be

accountable for the use or application by the Company of the Notes or any Additional Notes or the proceeds thereof.

- 12 -

IN WITNESS WHEREOF, the parties hereto have caused

this Sixteenth Supplemental Indenture to be duly executed as of the date first above written.

FS KKR CAPITAL CORP.

By:

/s/William Goebel

Name: William Goebel

Title: Chief Accounting Officer

U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION

(as successor-in-interest to U.S. Bank National Association),

as Trustee

By:

/s/Gregory P. Guim

Name: Gregory P. Guim

Title: Vice President

[Signature page to Sixteenth

Supplemental Indenture]

Exhibit A – Form of Global

Note

This Security is a Global Note within the meaning of the Indenture

hereinafter referred to and is registered in the name of The Depository Trust Company or a nominee thereof. This Security may not be exchanged

in whole or in part for a Security registered, and no transfer of this Security in whole or in part may be registered, in the name of

any Person other than The Depository Trust Company or a nominee thereof, except in the limited circumstances described in the Indenture.

Unless this certificate is presented by an authorized representative

of The Depository Trust Company to the issuer or its agent for registration of transfer, exchange or payment and such certificate issued

in exchange for this certificate is registered in the name of Cede & Co., or such other name as requested by an authorized

representative of The Depository Trust Company, any transfer, pledge or other use hereof for value or otherwise by or to any person is

wrongful, as the registered owner hereof, Cede & Co., has an interest herein.

FS KKR Capital Corp.

No. ____

$

CUSIP No. 302635

AR8

ISIN No. US302635AR85

7.500% Notes due 2031

FS KKR Capital Corp.,

a corporation duly organized and existing under the laws of Maryland (herein called the “Company”, which term includes

any successor Person under the Indenture hereinafter referred to), for value received, hereby promises to pay to Cede & Co.,

or registered assigns, the principal sum of ______________ (U.S. $_____________) on August 1, 2031, and to pay interest thereon

from June 8, 2026 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually

on February 1 and August 1 of each year, commencing February 1, 2027, at the rate of 7.500% per annum until the principal

hereof is paid or made available for payment. The interest so payable, and punctually paid or duly provided for, on any Interest Payment

Date will, as provided in such Indenture, be paid to the Person in whose name this Security is registered at the close of business on

the Regular Record Date for such interest, which shall be January 15 and July 15 (whether or not a Business Day), as the case

may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease

to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security is registered

at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof

shall be given to Holders of Securities of this series not less than 10 days prior to such Special Record Date, or be paid at any

time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series

may be listed, and upon such notice as may be required by such exchange, all as more fully provided in said Indenture. This Security may

be issued as part of a series.

Payment of the principal

of (and premium, if any, on) and any such interest on this Security will be made at the office of the Trustee located at 1735 Market

Street, 43rd Floor, Philadelphia, PA 19103 and at such other address as designated by the Trustee, in such coin or currency

of the United States of America as at the time of payment is legal tender for payment of public and private debts; provided, however,

that at the option of the Company payment of interest may be made by check mailed to the address of the Person entitled thereto as such

address shall appear in the Security Register; provided, further, however, that so long as this Security is registered

to Cede & Co., such payment will be made by wire transfer in accordance with the procedures established by The Depository Trust

Company and the Trustee.

Reference is hereby made to the further provisions

of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth

at this place.

Unless the certificate of authentication hereon

has been executed by the Trustee referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit

under the Indenture or be valid or obligatory for any purpose.

A-1

In

Witness Whereof, the Company has caused this instrument to be duly executed.

Dated: June 8, 2026

FS KKR CAPITAL CORP.

By:

Name: [•]

Title: [•]

Attest

By:

Name: [•]

Title: [•]

A-2

This is one of the Securities of the series designated

therein referred to in the within-mentioned Indenture.

Dated: June 8, 2026

U.S. BANK TRUST COMPANY, NATIONAL

ASSOCIATION (as successor-in-interest to U.S. Bank National Association),

as Trustee

By:

Authorized Signatory

A-3

FS KKR Capital Corp.

7.500% Notes due 2031

This

Security is one of a duly authorized issue of Senior Securities of the Company (herein called the “Securities”), issued

and to be issued in one or more series under an Indenture, dated as of July 14, 2014 (herein called the “Base Indenture”,

which term shall have the meaning assigned to it in such instrument), between the Company and U.S. Bank Trust Company, National Association,

as Trustee (herein called the “Trustee”, which term includes any successor trustee under the Base Indenture), and reference

is hereby made to the Base Indenture for a statement of the respective rights, limitations of rights, duties and immunities thereunder

of the Company, the Trustee, and the Holders of the Securities and of the terms upon which the Securities are, and are to

be, authenticated and delivered, as amended and supplemented by the First Supplemental Indenture, dated as of July 14, 2014, the

Second Supplemental Indenture, dated as of December 3, 2014, the Third Supplemental Indenture, dated as of April 30, 2015, the

Fourth Supplemental Indenture, dated as of July 15, 2019, the Fifth Supplemental Indenture, dated as of November 20, 2019, the

Sixth Supplemental Indenture, dated as of April 30, 2020, the Seventh Supplemental Indenture, dated as of December 10, 2020,

the Eighth Supplemental Indenture, dated as of June 17, 2021, the Ninth Supplemental Indenture, dated as of October 12, 2021,

the Tenth Supplemental Indenture, dated as of October 12, 2021, the Eleventh Supplemental Indenture, dated as of January 18,

2022, the Twelfth Supplemental Indenture, dated as of November 21, 2023, the Thirteenth Supplemental Indenture, dated as of June 6,

2024, the Fourteenth Supplemental Indenture, dated as of November 20, 2024, the Fifteenth Supplemental Indenture, dated as of September 25,

2025 and this Sixteenth Supplemental Indenture, relating to the Securities, dated as of June 8, 2026, by and between the Company

and the Trustee (herein called the “Sixteenth Supplemental Indenture”; and the Sixteenth Supplemental Indenture and

the Base Indenture collectively are herein called the “Indenture”). In the event of any conflict between the Base Indenture

and the Sixteenth Supplemental Indenture, the Sixteenth Supplemental Indenture shall govern and control.

This Security is one of the

series designated on the face hereof, initially limited in aggregate principal amount to $900,000,000. Under a Board Resolution,

Officers’ Certificate pursuant to Board Resolutions or an indenture supplement, the Company may from time to time, without the consent

of the Holders of Securities, issue additional Securities of this series (in any such case “Additional Securities”)

having the same ranking and the same interest rate, maturity and other terms as the Securities, provided that, if such Additional Securities

are not fungible with the Securities (or any other tranche of Additional Securities) for U.S. federal income tax purposes, then such Additional

Securities will have different CUSIP numbers from the Securities represented hereby (and any such other tranche of Additional Securities).

Any Additional Securities and the existing Securities will constitute a single series under the Indenture and all references to the relevant

Securities herein shall include the Additional Securities unless the context otherwise requires. The aggregate amount of outstanding Securities

represented hereby may from time to time be reduced or increased, as appropriate, to reflect exchanges and redemptions.

Prior

to May 1, 2031 (three months prior to their maturity date) (the “Par Call Date”), the Company may redeem the Notes

at its option, in whole or in part, at any time and from time to time, at a Redemption Price (expressed as a percentage of principal

amount and rounded to three decimal places) equal to the greater of:

i. (A) the sum of the present values of the remaining scheduled

payments of principal and interest thereon discounted to the Redemption Date (assuming the Notes matured on the Par Call Date) on a semi-annual

basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 50 basis points less (2) interest accrued

to the Redemption Date, and

ii. 100% of the principal amount of the Notes to be redeemed,

plus, in either case, accrued and unpaid

interest thereon to the Redemption Date.

On or after the Par Call Date, the Company may

redeem the Notes, in whole or in part, at any time and from time to time, at a Redemption Price equal to 100% of the principal amount

of the Notes being redeemed plus accrued and unpaid interest thereon to the Redemption Date.

A-4

For purposes of calculating the Redemption Price

in connection with the redemption of the Notes, on any Redemption Date, the following terms have the meanings set forth below:

“Treasury

Rate” means, with respect to any Redemption Date, the yield determined by the Company in accordance with the following

two paragraphs.

The Treasury Rate shall be determined by the Company

after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors

of the Federal Reserve System), on the third business day preceding the Redemption Date based upon the yield or yields for the most recent

day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal

Reserve System designated as “Selected Interest Rates (Daily) - H.15” (or any successor designation or publication) (“H.15”)

under the caption “U.S. government securities–Treasury constant maturities–Nominal” (or any successor caption

or heading). In determining the Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity

on H.15 exactly equal to the period from the Redemption Date to the Par Call Date (the “Remaining Life”); or (2) if there

is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields – one yield corresponding to the

Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately

longer than the Remaining Life – and shall interpolate to the Par Call Date on a straight-line basis (using the actual number of

days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on

H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining

Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity

date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the Redemption Date.

If on the third

business day preceding the Redemption Date H.15 or any successor designation or publication is no longer published, the Company shall

calculate the Treasury Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York

City time, on the second business day preceding such Redemption Date of the United States Treasury security maturing on, or with a maturity

that is closest to, the Par Call Date, as applicable. If there is no United States Treasury security maturing on the Par Call Date but

there are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity

date preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United States

Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury securities maturing

on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall

select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par

based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m., New York City time. In determining

the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury

security shall be based upon the average of the bid and asked prices (expressed as a percentage of principal amount) at 11:00 a.m., New

York City time, of such United States Treasury security, and rounded to three decimal places.

The Company’s actions and determinations

in determining the Redemption Price shall be conclusive and binding for all purposes, absent manifest error.

Notice of redemption shall be given in writing

and mailed, first-class postage prepaid or by overnight courier guaranteeing next-day delivery, to each Holder of the Securities to be

redeemed, not less than ten (10) nor more than sixty (60) days prior to the Redemption Date, at the Holder’s address appearing

in the Security Register. All notices of redemption shall contain the information set forth in Section 1104 of the Base Indenture.

Any exercise of the Company’s option to

redeem the Securities will be done in compliance with the Investment Company Act, to the extent applicable.

If the Company elects to redeem only a

portion of the Securities, the particular Securities to be redeemed will be selected in accordance with the applicable procedures of

the Trustee and, so long as the Securities are registered to the Depositary or its nominee, the Depositary. In the event of

redemption of this Security in part only, a new Security or Securities of this series and of like tenor for the unredeemed portion

hereof will be issued in the name of the Holder hereof upon the cancellation hereof; provided, however, that no such

partial redemption shall reduce the portion of the principal amount of a Security not redeemed to less than $2,000.

A-5

Unless the Company defaults in payment of the

Redemption Price, on and after the Redemption Date, interest will cease to accrue on the Securities called for redemption.

Holders will have the right to require the Company

to repurchase their Securities upon the occurrence of a Change of Control Repurchase Event as set forth in the Indenture.

The Indenture contains provisions for defeasance

at any time of the entire indebtedness of this Security or certain restrictive covenants and Events of Default with respect to this Security,

in each case upon compliance with certain conditions set forth in the Indenture.

If an Event of Default with respect to Securities

of this series shall occur and be continuing (other than Events of Default related to certain events of bankruptcy, insolvency or reorganization

as set forth in the Indenture), the principal of the Securities of this series may be declared due and payable in the manner and with

the effect provided in the Indenture. In the case of certain events of bankruptcy, insolvency or reorganization described in the Indenture,

100% of the principal of and accrued and unpaid interest on the Securities will automatically become due and payable.

The Indenture permits,

with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company and

the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee

with the consent of the Holders of not less than a majority in principal amount of the Securities at the time Outstanding of each

series to be affected. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the

Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the

Company with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent

or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security

and of any Security issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation

of such consent or waiver is made upon this Security.

As provided in and subject to the provisions of

the Indenture, the Holder of this Security shall not have the right to institute any proceeding with respect to the Indenture or for the

appointment of a receiver or trustee or for any other remedy thereunder, unless such Holder shall have previously given the Trustee written

notice of a continuing Event of Default with respect to the Securities of this series, the Holders of not less than 25% in principal amount

of the Securities of this series at the time Outstanding shall have made written request to the Trustee to institute proceedings in respect

of such Event of Default as Trustee and offered the Trustee indemnity, security, or both, satisfactory to the Trustee, against the costs,

expenses and liabilities to be incurred in compliance with such request, and the Trustee shall not have received from the Holders of a

majority in principal amount of Securities of this series at the time Outstanding a direction inconsistent with such request, and shall

have failed to institute any such proceeding, for sixty (60) days after receipt of such notice, request and offer of indemnity and/or

security. The foregoing shall not apply to any suit instituted by the Holder of this Security for the enforcement of any payment of principal

hereof or any premium or interest hereon on or after the respective due dates expressed herein.

No reference herein to the Indenture and no provision

of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay

the principal of and any premium and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed.

As provided in the Indenture and subject to certain

limitations therein set forth, the transfer of this Security is registrable in the Security Register, upon surrender of this Security

for registration of transfer at the office or agency of the Company in any place where the principal of and any premium and interest on

this Security are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and

the Security Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Securities

of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, will be issued to the designated

transferee or transferees.

A-6

The Securities of this series are issuable only

in registered form without coupons in denominations of $2,000 and any integral multiples of $1,000 in excess thereof. As provided in the

Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal

amount of Securities of this series and of like tenor of a different authorized denomination, as requested by the Holder surrendering

the same.

No service charge shall be made for any such registration

of transfer or exchange, but the Company or Trustee may require payment of a sum sufficient to cover any tax or other governmental charge

payable in connection therewith.

Prior to due presentment of this Security for

registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this

Security is registered as the owner hereof for all purposes, whether or not this Security be overdue, and neither the Company, the Trustee

nor any such agent shall be affected by notice to the contrary.

All terms used in this Security which are defined

in the Indenture shall have the meanings assigned to them in the Indenture.

To the extent any provision of this Security conflicts

with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling.

The Indenture and this Security shall be governed

by and construed in accordance with the laws of the State of New York, without regard to principles of conflicts of laws.

A-7

EX-5.1 — EXHIBIT 5.1

EX-5.1

Filename: tm2617105d1_ex5-1.htm · Sequence: 3

Exhibit 5.1

Dechert

LLP

Cira Centre

2929 Arch Street

Philadelphia, PA 19104-2808

+1 215 994 4000 Main

+1 215 994 2222 Fax

June 8, 2026

FS KKR Capital Corp.

3025 JFK Boulevard, Suite #500

Philadelphia, PA 19104

Re: Registration Statement on Form N-2

Ladies and Gentlemen:

We have acted as special counsel to FS KKR Capital Corp., a Maryland

corporation (the “Company”), in connection with the preparation and filing of a Registration Statement on Form N-2,

filed on September 19, 2024 with the U.S. Securities and Exchange Commission (the “Commission”) under the Securities

Act of 1933, as amended (the “Securities Act”) (the “Registration Statement”) and the final prospectus

supplement, dated June 1, 2026 (including the base prospectus filed therewith, the “Prospectus Supplement”), filed

with the Commission on June 3, 2026 pursuant to Rule 424(b)(2) under the Securities Act, relating to the proposed issuance

by the Company of $900 million aggregate principal amount of its 7.50% notes due 2031 (the “Notes”), to be sold to

the underwriters pursuant to an underwriting agreement substantially in the form filed as Exhibit 1.1 to the Company’s Current

Report on Form 8-K filed with the Commission on June 2, 2026 (the “Underwriting Agreement”). This opinion

letter is being furnished to the Company in accordance with the requirements of Item 25 of Form N-2 under the Investment Company

Act of 1940, as amended, and we express no opinion herein as to any matter other than as to the legality of the Notes.

The Notes are to be issued pursuant to the indenture dated as of July 14,

2014 (the “Base Indenture”), between the Company and U.S. Bank National Association, as trustee (the “Trustee”),

as supplemented by the first supplemental indenture dated as of July 14, 2014, by the second supplemental indenture dated as of December 3,

2014, by the third supplemental indenture dated as of April 30, 2015, by the fourth supplemental indenture dated as of July 15,

2019, by the fifth supplemental indenture dated as of November 20, 2019, by the sixth supplemental indenture dated as of April 30,

2020, by the seventh supplemental indenture dated as of December 10, 2020, by the eighth supplemental indenture dated as of June 17,

2021, by the ninth supplemental indenture dated as of October 12, 2021, by the tenth supplemental indenture dated as of October 12,

2021, by the eleventh supplemental indenture dated as of January 18, 2022, by the twelfth supplemental indenture dated as of November 21,

2023, by the thirteenth supplemental indenture dated as of June 6, 2024, by the fourteenth supplemental indenture dated as of November 20,

2024, by the fifteenth supplemental indenture dated as of September 25, 2025, and by the sixteenth supplemental indenture dated as

of June 8, 2026 (together with the Base Indenture, the “Indenture”), between the Company and the Trustee.

FS KKR Capital Corp.

June 8, 2026

Page 2

In rendering the opinions expressed below, we have examined and relied

on originals or copies, certified or otherwise identified to our satisfaction, of such documents, corporate records and other instruments

and such agreements, certificates and receipts of public officials, certificates of officers or other representatives of the Company and

others, and such other documents as we have deemed necessary or appropriate as a basis for the opinions set forth below, including the

following documents:

(i)

the Registration Statement;

(ii)

the Prospectus Supplement;

(iii)

the Underwriting Agreement;

(iv)

the Indenture;

(v)

a specimen copy of the form of the Notes to be issued pursuant to the Indenture;

(vi)

the Second Articles of Amendment and Restatement of the Company, as amended;

(vii)

the Third Amended and Restated Bylaws of the Company;

(viii)

a certificate of good standing with respect to the Company issued by the State Department of Assessments and Taxation of Maryland as of a recent date;

(ix)

The resolutions of the pricing committee of the Company relating to the authorization and issuance of the Notes; and

(ix)

the resolutions of the board of directors of the Company, relating to, among other things, the authorization and issuance of the Notes.

As to the facts upon which this opinion is based, we have relied upon

certificates of public officials and certificates and written statements of agents, officers, directors and representatives of the Company

without having independently verified such factual matters.

In our examination, we have assumed the genuineness of all signatures,

the authenticity of all documents submitted to us as original documents, the conformity to original documents of all documents submitted

to us as copies, the legal capacity of natural persons who are signatories to the documents examined by us and the legal power and authority

of all persons signing on behalf of the parties to such documents.

On the basis of the foregoing and subject to the assumptions, qualifications

and limitations set forth in this letter, we are of the opinion that:

1.

The Indenture constitutes the valid and legally binding obligation of the Company, enforceable against the Company in accordance with its terms.

2.

When duly executed by the Company and authenticated by the Trustee in accordance with the terms of the Indenture and delivered to the underwriter against payment therefor in accordance with the terms of the Underwriting Agreement, the Notes will constitute the legal and binding obligations of the Company, enforceable against the Company in accordance with their terms.

FS KKR Capital Corp.

June 8, 2026

Page 3

The opinions set forth herein are subject to the following assumptions,

qualifications, limitations and exceptions being true and correct at or before the time of the Notes:

(i)

the Company is duly incorporated and validly existing in good standing under the laws of the State of Maryland;

(ii)

the Indenture and the Notes have been duly authorized, executed and delivered by each party thereto (other than the Company);

(iii)

the final terms of the Notes have been duly established and approved by all necessary corporate action on the part of the Company;

(iv)

the terms of the Notes as established comply with the requirements of the Investment Company Act of 1940, as amended; and

(v)

the Notes have been duly executed by the Company and authenticated by the Trustee in accordance with the Indenture and delivered to and paid for by the purchasers thereof.

The opinions set forth herein as to enforceability of obligations of

the Company are subject to: (i) bankruptcy, insolvency, reorganization, fraudulent conveyance, moratorium or similar laws now or

hereinafter in effect affecting the enforcement of creditors’ rights generally, and by general principles of equity (regardless

of whether enforcement is sought in a proceeding in equity or at law) and the discretion of the court or other body before which any proceeding

may be brought; (ii) the unenforceability under certain circumstances under law or court decisions of provisions providing for the

indemnification of, or contribution to, a party with respect to a liability where such indemnification or contribution is contrary to

public policy; (iii) provisions of law which may require that a judgment for money damages rendered by a court in the United States

be expressed only in U.S. dollars; (iv) requirements that a claim with respect to any debt securities denominated other than in U.S.

dollars (or a judgment denominated other than in U.S. dollars in respect of such claim) be converted into U.S. dollars at a rate of exchange

prevailing on a date determined pursuant to applicable law; and (v) governmental authority to limit, delay or prohibit the making

of payments outside the United States or in foreign currency or composite currency.

We express no opinion as to the validity, legally binding effect or

enforceability of any provision in any agreement or instrument that (i) requires or relates to payment of any interest at a rate

or in an amount which a court may determine in the circumstances under applicable law to be commercially unreasonable or a penalty or

forfeiture or (ii) relates to governing law and submission by the parties to the jurisdiction of one or more particular courts. The

opinions set forth in this opinion letter are given in reliance on the opinion letter of Miles & Stockbridge P.C., special Maryland

counsel to the Company, dated as of the date hereof.

The opinions expressed herein are limited to the laws of the State

of New York.

This opinion letter has been prepared for your use solely in connection

with the Registration Statement. We assume no obligation to advise you of any changes in the foregoing subsequent to the date of this

opinion.

FS KKR Capital Corp.

June 8, 2026

Page 4

We hereby consent to the filing of this opinion as an exhibit to the

Company’s Current Report on Form 8-K filed with the Commission on or around June 8, 2026 and to the reference to this

firm under the caption “Legal Matters” in the Registration Statement and the Prospectus Supplement. 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 Securities Act or

the rules and regulations of the Commission thereunder.

Very truly yours,

/s/Dechert LLP

EX-5.2 — EXHIBIT 5.2

EX-5.2

Filename: tm2617105d1_ex5-2.htm · Sequence: 4

Exhibit 5.2

June 8, 2026

FS KKR Capital Corp.

201 Rouse Boulevard

Philadelphia, PA 19112-1902

Re:         Registration

Statement on Form N-2 (File No. 333-282226)

Ladies and Gentlemen:

We have acted as special Maryland counsel to FS KKR Capital Corp.,

a Maryland corporation (the “Company”) and a business development company under the Investment Company Act of 1940, as amended,

in connection with the issuance and sale of $900,000,000 aggregate principal amount of its 7.500% Notes due 2031 (the “Notes”),

as covered by the Company’s Registration Statement on Form N-2 (File No. 333-282226) (together with all amendments and

supplements thereto, the “Registration Statement”) filed with the Securities and Exchange Commission (the “Commission”)

under the Securities Act of 1933, as amended (the “Securities Act”).

We have examined (i) the Registration Statement, except that we

have not examined the documents incorporated by reference therein or otherwise deemed to be part thereof or included therein, (ii) the

Underwriting Agreement, dated June 1, 2026 (the “Underwriting Agreement”), among the Company and FS/KKR Advisor, LLC,

a Delaware limited liability company, BofA Securities, Inc., BMO Capital Markets Corp., J.P. Morgan Securities LLC, KKR Capital Markets

LLC, RBC Capital Markets, LLC and SMBC Nikko Securities America, Inc., as representatives of the underwriters named therein, pursuant

to which the Notes are being issued and sold, (iii) the Indenture, dated as of July 14, 2014, between the Company and U.S. Bank

Trust Company, National Association (as successor-in-interest to U.S. Bank National Association), as Trustee, together with the Sixteenth

Supplemental Indenture thereto, dated as of June 8, 2026 (collectively the “Indenture”), (iv) the charter and the

bylaws of the Company, (v) certain records of proceedings of the board of directors of the Company with respect to the issuance and

sale of the Notes, the execution, delivery and performance of its obligations under the Indenture and the transactions contemplated by

the Underwriting Agreement and (vi) such other corporate records, certificates and documents as we deemed necessary for the purpose

of this opinion letter.

In giving the opinions set forth herein, we have made the following

assumptions: (i) all documents submitted to us as originals are authentic, (ii) all documents submitted to us as copies conform

to the original documents, (iii) all signatures on all documents submitted to us for examination are genuine (whether manual, electronic

or otherwise) and, to the extent that a signature on a document is manifested by electronic or similar means, such signature has been

executed or adopted by a signatory with an intent to authenticate and sign the document, (iv) all natural persons who executed any

of the documents that were reviewed by us had legal capacity at the time of such execution and (v) all public records reviewed by

us or on our behalf are accurate and complete. We have relied as to certain factual matters on information obtained from public officials

and from officers of the Company.

FS KKR Capital Corp.

June 8 2026

Page 2

Based on that examination, it is our opinion that the Company has the

corporate power to execute, deliver and perform its obligations under the Indenture and to issue the Notes and that the execution and

delivery by the Company of the Indenture, the performance of its obligations thereunder and the issuance of the Notes have been duly authorized

by the Company.

We express no opinion as to the laws of any state or jurisdiction other

than, and our opinions expressed herein are limited to, the laws of the State of Maryland, except that we express no opinion with respect

to the “blue sky” or other securities laws or regulations of the State of Maryland or any other jurisdiction. The opinions

expressed herein are limited to the matters set forth in this letter and no other opinion should be inferred beyond the matters expressly

stated. This letter and the opinions expressed herein are being furnished by us to you solely for your benefit and may not be relied on,

used, circulated, quoted from or otherwise referred to by any other person or for any other purpose without our prior written consent.

We hereby consent to the filing of this opinion as an exhibit to the

Company’s Current Report on Form 8-K filed with the Commission on June 8, 2026, and to the use of our name under the caption

“Legal Matters” in the prospectus forming a part of the Registration Statement. In giving our consent, we do not thereby admit

that we are in the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations

of the Commission thereunder.

Very truly yours,

Miles & Stockbridge P.C.

By:

/s/ Emily Higgs

Principal

EX-99.1 — EXHIBIT 99.1

EX-99.1

Filename: tm2617105d1_ex99-1.htm · Sequence: 5

Exhibit 99.1

FOR IMMEDIATE RELEASE

FSK Completes Public Offering of $900,000,000

7.500% Unsecured Notes Due 2031

PHILADELPHIA, PA and NEW YORK, NY –

June 8, 2026 – FS KKR Capital Corp. (NYSE: FSK) today announced that it has completed its previously announced offering

of $900,000,000 in aggregate principal amount of its 7.500% unsecured notes due 2031 (the “Notes”). BofA

Securities, Inc., BMO Capital Markets Corp., J.P. Morgan Securities LLC, KKR Capital Markets LLC, RBC Capital Markets, LLC and

SMBC Nikko Securities America, Inc. are acting as joint book-running managers for this offering. HSBC Securities (USA)

Inc., ING Financial Markets LLC, Mizuho Securities USA LLC, MUFG Securities Americas Inc., TD Securities (USA) LLC, Truist

Securities, Inc., Barclays Capital Inc., BNP Paribas Securities Corp., CIBC World Markets Corp., Citigroup Global Markets Inc.,

Goldman Sachs & Co. LLC, Morgan Stanley & Co. LLC, SG Americas Securities, LLC, UBS Securities LLC and Standard

Chartered Bank are acting as joint lead managers for this offering. ICBC Standard Bank Plc, Keefe, Bruyette &

Woods, Inc., Lucid Capital Markets, LLC, R. Seelaus & Co., LLC and U.S. Bancorp Investments, Inc. are acting as

co-managers for this offering.

FSK intends to use the net proceeds of this offering

for general corporate purposes, including potentially repaying outstanding indebtedness under credit facilities and certain notes.

This announcement does not constitute an offer

to sell or a solicitation of an offer to buy any of the Notes, nor shall there be any offer, solicitation or sale in any state or jurisdiction

in which such an offer, solicitation or sale would be unlawful.

About FS KKR Capital Corp.

FSK is a leading publicly traded

business development company (BDC) focused on providing customized credit solutions to private middle market U.S. companies. FSK seeks

to invest primarily in the senior secured debt and, to a lesser extent, subordinated loans and certain asset-based financing loans of

private U.S. companies. FSK is advised by FS/KKR Advisor, LLC.

About FS/KKR Advisor, LLC

FS/KKR Advisor, LLC (FS/KKR) is a partnership

between Future Standard and KKR Credit that serves as the investment adviser to FSK and other business development companies.

Future Standard is a global alternative asset

manager serving institutional and private wealth clients, investing across private equity, credit and real estate. With a 30+ year track

record of value creation and over $94 billion in assets under management, we back the business owners and financial sponsors that drive

growth and innovation across the middle market, transforming untapped potential into durable value.(1)

KKR is a leading global investment firm that offers

alternative asset management as well as capital markets and insurance solutions. KKR aims to generate attractive investment returns by

following a patient and disciplined investment approach, employing world-class people, and supporting growth in its portfolio companies

and communities. KKR sponsors investment funds that invest in private equity, credit and real assets and has strategic partners that manage

hedge funds. KKR’s insurance subsidiaries offer retirement, life and reinsurance products under the management of Global Atlantic

Financial Group. References to KKR’s investments may include the activities of its sponsored funds and insurance subsidiaries.

Forward-Looking Statements and Important Disclosure Notice

This announcement may contain certain forward-looking

statements, including statements with regard to future events or future performance or operations of FSK. Words such as “believes,”

“expects,” “projects,” and “future” or similar expressions are intended to identify forward-looking

statements, although not all forward-looking statements include those words. These forward-looking statements are subject to the inherent

uncertainties in predicting future results and conditions, some of which are beyond FSK’s control and difficult to predict. Certain

factors could cause actual results to differ materially from those projected in these forward-looking statements. Factors that could cause

actual results to differ materially include changes in the economy, risks associated with possible disruption in FSK’s operations

or the economy generally due to terrorism, geo-political risks, natural disasters or pandemics, future changes in laws or regulations

and conditions in FSK’s operating area and the price at which shares of FSK’s common stock trade on the New York Stock Exchange.

Some of these factors are enumerated in the filings FSK makes with the SEC, including those factors set forth in “Item 1A. Risk

Factors” in FSK’s Annual Report on Form 10-K. Except as required by the federal securities laws, FSK undertakes no obligation

to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

The press release above contains summaries of

certain financial and statistical information about FSK. The information contained in this press release is summary information that is

intended to be considered in the context of FSK’s SEC filings and other public announcements that FSK may make, by press release

or otherwise, from time to time. FSK undertakes no duty or obligation to update or revise the information contained in this press release.

In addition, information related to past performance, while helpful as an evaluative tool, is not necessarily indicative of future results,

the achievement of which cannot be assured. Investors should not view the past performance of FSK, or information about the market, as

indicative of FSK’s future results.

1) Total AUM estimated as of March 31, 2026. References to “assets under management” or “AUM” represent

the assets managed by Future Standard or its strategic partners as to which Future Standard is entitled to receive a fee or carried interest

(either currently or upon deployment of capital) and general partner capital. Future Standard calculates the amount of AUM as of any date

as the sum of: (i) the fair value of the investments of Future Standard's investment funds; (ii) uncalled investor capital commitments

to these funds, including uncalled investor capital commitments from which Future Standard is currently not

earning management fees or carried interest; (iii) the value of outstanding CLOs; (iv) the fair value of FS KKR Capital Corp.

joint venture (JV) assets and (v) the fair value of other assets managed by Future Standard. Future Standard's calculation of AUM

may differ from the calculations of other asset managers and, as a result, Future Standard's measurements of its AUM may not be comparable

to similar measures presented by other asset managers. Future Standard's definition of AUM is not based on any definition of AUM that

may be set forth in agreements governing the investment funds, vehicles or accounts that it manages and is not calculated pursuant to

any regulatory definitions.

Contact Information:

Investor Relations Contact

Caitlin Welch

Caitlin.Welch@futurestandard.com

Future Standard Media Team

Marc Hazelton

Marc.Hazelton@futurestandard.com

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