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Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting of Stockholders to Be Held on June 6, 2018.

Dear Stockholder:

Notice is hereby given that the 2018 Annual Meeting of Stockholders (the “Meeting”) of TCG BDC, Inc. (the “Company”) will be held on June 6, 2018 at 8:00 a.m. Eastern Time, at the offices of the Company, 520 Madison Avenue, 33rd Floor, New York, NY 10022.

Stockholders of the Company will be asked at the Meeting:
To elect two directors, each to serve for a three-year term until his successor is duly elected and qualified or until his earlier death, resignation or removal;
To ratify the selection of Ernst & Young LLP as the independent registered public accounting firm for the fiscal year ending December 31, 2018;
To consider and vote upon a proposal to approve the application of a minimum asset coverage ratio of 150% to the Company, which would permit the Company to double the maximum amount of leverage that it is permitted to incur;
To transact such other business as may properly come before the Meeting or at any postponement or adjournment thereof.

The Board of Directors unanimously recommends that you vote in favor of each proposal.

To view/download the proxy statement, proxy card and the Company's 2017 annual report, and vote your proxy, click here: and enter your control number.

Control# _________________________________________________
Voting by Internet: Log on to – Enter your control number at the time you wish to execute your vote.

If you have questions about the proposals or wish to vote your shares, please call a customer service representative
at 1-866-796-7181, Monday through Friday between 9:00 a.m. and 10:00 p.m. Eastern Time.

This communication represents only an overview of the more complete proxy materials that are available to you on the internet at:

We encourage you to access and review all of the important information contained in the proxy materials before voting.

We must receive your vote by Tuesday, June 5, 2018 to be counted. Your vote is important no matter how many shares you own.

If interested, you may attend the meeting in person and vote. To obtain directions to the Meeting, please call the Company at (866) 796-7181.

Request for Proxy Materials:
If you would like to receive a paper or electronic copy of these documents, you must request one. There is no charge to you for requesting a copy. Please make your request for a copy using any of the options below. If you wish to receive a paper copy through the mail please make that request on or before May 25, 2018 to allow for timely delivery. If you request to receive an electronic copy please do so by May 30, 2018.
By Internet - Go to and enter the control number listed above. Once you have logged in you may request a copy of the proxy materials to be sent to your email address or to your home, your choice.
By Phone - You can request either an electronic copy or hardcopy of the proxy materials by calling toll-free
(866) 796-7181 and referencing the control number listed above. Representatives are available between the hours of Monday through Friday 9:00 a.m. to 10:00 p.m. Eastern Time.
By E-mail - To request a copy of the proxy materials, please send an e-mail with your control number in the subject line to the address noted below:
    For a paper copy:
For an electronic copy:

We appreciate your attention to this important matter.

SHAREHOLDER PRIVACY: To ensure your privacy there is no personal information required to view or request proxy materials and/or vote.

The control number listed above is a unique identifier created for this proxy and this proxy only. It is not linked to your account number nor can it be used in any other manner other than this proxy.