13D Filing: Oaktree Capital Management and Fifth Street Finance Corp. (FSC)

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Item 1. Security and Issuer

The securities to which this statement on Schedule 13D relates are the shares of common stock, par value $0.01 per share (the Common
Stock) of Fifth Street Finance Corp., a Delaware corporation (the Issuer), with principal executive offices at 777 West Putnam Avenue, 3rd Floor, Greenwich, CT 06830.

Item 2. Identity and Background

(a)  (c) and (f)

This Schedule 13D is being filed jointly, pursuant to a joint filing agreement, by (i) Oaktree Capital Management, L.P., a Delaware
limited partnership and a registered investment adviser under the Investment Advisers Act of 1940, as amended (Oaktree), whose principal business is to provide investment advisory services to investment funds and accounts;
(ii) Oaktree Holdings, Inc., a Delaware corporation (Holdings, Inc.), whose principal business is to serve as, and perform the functions of, the general partner of certain entities affiliated with the Reporting
Persons and to hold limited partnership interests in such entities; (iii) Oaktree Capital Group, LLC, a Delaware limited liability company (OCG), whose principal business is to act as the holding company and controlling
entity of each of the general partner and investment adviser of certain investment funds and separately managed accounts; and (iv) Oaktree Capital Group Holdings GP, LLC, a Delaware limited liability company (OCGH GP and,
together with Oaktree, Holdings, Inc. and OCG, the Reporting Persons), whose principal business is to serve as, and perform the functions of, the manager of OCG.

The Reporting Persons have entered into a joint filing agreement, dated as of July 21, 2017, a copy of which is attached hereto as
Exhibit 1.

Set forth in the attached Annex A is a listing of the directors, executive officers, members and general partners, as
applicable, of each Reporting Person (collectively, the Covered Persons), and Annex A is incorporated by reference into this Item 2. Each of the Covered Persons that is a natural person is a United States citizen.

The principal business address of each of the Reporting Persons and each Covered Person is c/o Oaktree Capital Group Holdings GP, LLC, 333
South Grand Avenue, 28th Floor, Los Angeles, California 90071.

(d) and (e)

During the last five years, none of the Reporting Persons and, to the best of their knowledge, none of the Covered Persons: (i) has been
convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors); or (ii) has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or
is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

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