Exhibit 10.3

EXECUTION COPY

JOINDER AGREEMENT

JOINDER AGREEMENT dated as of April 6, 2018 by Signature Bank (the “Assuming
Lender”) in favor of Goldman Sachs Middle Market Lending Corp., a Delaware
corporation (the “Borrower”), and SunTrust Bank, as administrative agent under
the Credit Agreement referred to below (in such capacity, together with its
successors in such capacity, the “Administrative Agent”).

The Borrower, the Lenders from time to time party thereto and the Administrative
Agent are parties to a Senior Secured Revolving Credit Agreement, dated as of
September 11, 2017 (as amended, supplemented or otherwise modified and in effect
from time to time, the “Credit Agreement”).

Pursuant to Section 2.08(e) of the Credit Agreement, the Assuming Lender hereby
agrees to (and does hereby) become a “Lender” under and for all purposes of the
Credit Agreement with a Multicurrency Commitment equal to $50,000,000. Without
limiting the foregoing, the Assuming Lender hereby agrees to be bound by and
comply with all of the terms and provisions of the Credit Agreement applicable
to it as a “Lender” thereunder.

Sections 9.06, 9.09 and 9.10 of the Credit Agreement apply to this Joinder
Agreement mutatis mutandis.

IN WITNESS WHEREOF, the Assuming Lender has caused this Joinder Agreement to be
duly executed and delivered as of the day and year first above written.

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SIGNATURE BANK,

as Assuming Lender

 

By:

 

/s/ Jason A. Birnbaum

Name: Jason A. Birnbaum

Title: Group Director – Senior Vice President

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Accepted and agreed:

 

GOLDMAN SACHS MIDDLE MARKET

LENDING CORP.,

as Borrower

By:

 

/s/ Jonathan Lamm

Name: Jonathan Lamm

Title: Authorized Signatory

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SUNTRUST BANK,

as Administrative Agent and an Issuing Bank

 

By:

 

/s/ Doug Kennedy

Name: Doug Kennedy

Title: Director

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BANK OF AMERICA, N.A.,

as an Issuing Bank

By:

 

/s/ Robin Noret

Name: Robin Noret

Title: Vice President