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|--------|
|        |  |  |
|   | þ | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
|   |   | For the fiscal year ended September 30, 2016 |

|        |
|--------|
|        |  |  |
|   |  ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |

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| DELAWARE(State or jurisdiction ofincorporation or organization)                       |   | 61-1713295(I.R.S. EmployerIdentification No.) |
|                                                                                  |   |   |
| 777 West Putnam Avenue, 3rd FloorGreenwich, CT(Address of principal executive office) |   | 06830(Zip Code) |

|                                         |
|-----------------------------------------|
|                                         |  |  |
| Title of Each Class                     |   | Name of Each Exchangeon Which Registered |
| Common Stock, par value $0.01 per share |   | The NASDAQ Global Select Market |

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|-----------------------------------------------------|
|                                                     |  |  |  |  |  |  |
| Large accelerated filer   ̈ |   | Accelerated filer  þ |   | Non-accelerated filer   ̈ |   | Smaller reporting company   ̈ |
|                                                |   |   |   | (Do not check if a smaller reporting company) |   |   |

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|                                                                                                        |
|                                                                                                   |
| Consolidated Statements of Assets and Liabilities as of September 30, 2016 and September 30, 2015 |
| Consolidated Statements of Operations for the years ended September 30, 2016, 2015 and 2014            |
| Consolidated Statements of Changes in Net Assets for the years ended September 30, 2016, 2015 and 2014 |
| Consolidated Statements of Cash Flows for the years ended September 30, 2016, 2015 and 2014            |
| Consolidated Schedule of Investments as of September 30, 2016                                     |
| Consolidated Schedule of Investments as of September 30, 2015                                     |
| Notes to Consolidated Financial Statements                                                             |

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|----------------------------------------------------------------------------|
|                                                                            |
| Schedule 12-14 — Investments in and advances to affiliates |

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|     |                                                                                                                                                                                                                                     |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 3.1 | Amended and Restated Certificate of Incorporation of the Registrant (Incorporated by reference to Exhibit a filed with      the Registrant’s Registration Statement on Form N-2 (File No. 333-188904) filed on July 8, 2013). |

|     |                                                                                                                                                                                   |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 3.2 | Bylaws of the Registrant (Incorporated by reference to Exhibit 3.1 filed with the Registrant’s Current Report on Form 8-K (File No. 814-01013) filed on September 9, 2016). |

|     |                                                                                                                                                                                             |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 4.1 | Form of Common Stock Certificate (Incorporated by reference to Exhibit d filed with the Registrant’s Registration Statement on Form N-2 (File No. 333-188904) filed on July 8, 2013). |

|     |                                                                                                                                                                                                                                                                                                                                  |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 4.2 | Indenture among FS Senior Funding Ltd., as issuer, FS Senior Funding CLO LLC, as co-issuer, and Wells Fargo Bank, National Association, as trustee, dated as of May 28, 2015 (Incorporated by reference to Exhibit 4.1 filed with the Registrant’s Current Report on Form 8-K (File No. 814-01013) filed on June 3, 2015). |

|      |                                                                                                                                                                                       |
|------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.1 | Dividend Reinvestment Plan (Incorporated by reference to Exhibit e filed with the Registrant’s Registration Statement on Form N-2 (File No. 333-188904) filed on July 8, 2013). |

|      |                                                                                                                                                                                                                                                    |
|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.2 | Investment Advisory Agreement by and between Registrant and Fifth Street Management LLC (Incorporated by reference to Exhibit g filed with the Registrant’s Registration Statement on Form N-2 (File No. 333-188904) filed on July 8, 2013). |

|      |                                                                                                                                                                                      |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.3 | Form of Custody Agreement (Incorporated by reference to Exhibit j filed with the Registrant’s Registration Statement on Form N-2 (File No. 333-188904) filed on July 8, 2013). |

|      |                                                                                                                                                                                                                               |
|------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.4 | Administration Agreement by and between Registrant and FSC, Inc. (Incorporated by reference to Exhibit k.1 filed with the Registrant’s Registration Statement on Form N-2 (File No. 333-188904) filed on July 8, 2013). |

|      |                                                                                                                                                                                                                                       |
|------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.5 | License Agreement by and between Registrant and Fifth Street Capital LLC (Incorporated by reference to Exhibit k.2 filed with the Registrant’s Registration Statement on Form N-2 (File No. 333-188904) filed on July 8, 2013). |

|      |                                                                                                                                                                                                                                                                                                                                                      |
|------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.6 | Amended and Restated Credit Agreement by and among the lenders referred to therein, FS Senior Funding LLC, Natixis, New York Branch, and U.S. Bank National Association, dated as of October 16, 2014 (Incorporated by reference to Exhibit 10.1 filed with the Registrants Current Report on Form 8-k (File No. 814-01013) filed October 21, 2014). |

|      |                                                                                                                                                                                                                                                                                            |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.7 | Amended and Restated Loan Sale and Contribution Agreement by and between Registrant and FS Senior Funding LLC, dated as of October 16, 2014 (Incorporated by reference to Exhibit 10.2 filed with the Registrants Current Report on Form 8-k (File No. 814-01013) filed October 21, 2014). |

|      |                                                                                                                                                                                                                                                                            |
|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.8 | Collateral Management Agreement by and between FS Senior Funding LLC and Registrant, dated as of November 1, 2013 (Incorporated by reference to Exhibit 10.3 filed with the Registrant’s Current Report on Form 8-K (File No. 814-01013) filed on November 7, 2013). |

|      |                                                                                                                                                                                                                                                                                                                                                                |
|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.9 | Amended and Restated Credit Agreement by and among the lenders referred to therein, FS Senior Funding LLC, Natixis, New York Branch, and U.S. Bank National Association, dated as of October 16, 2014 (Incorporated by reference to Exhibit 10.1 filed with the Registrant’s Current Report on Form 8-K (File No. 814-01013) filed on October 21, 2014). |

|       |                                                                                                                                                                                                                                                                                                      |
|-------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.10 | Amended and Restated Loan Sale and Contribution Agreement by and between Registrant and FS Senior Funding LLC, dated as of October 16, 2014 (Incorporated by reference to Exhibit 10.2 filed with the Registrant’s Current Report on Form 8-K (File No. 814-01013) filed on October 21, 2014). |

|       |                                                                                                                                                                                                                                                                                                                                                                   |
|-------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.11 | Loan and Security Agreement by and among Registrant, FS Senior Funding II LLC, the lenders referred to therein, Citibank, N.A., and Wells Fargo Bank, National Association, dated as of January 15, 2015 (Incorporated by reference to Exhibit 10.1 filed with the Registrant’s Current Report on Form 8-K (File No. 814-01013) filed on January 21, 2015). |

|       |                                                                                                                                                                                                                                                                   |
|-------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.12 | Loan Sale Agreement by and between Registrant and FS Senior Funding II LLC, dated as of January 15, 2015 (Incorporated by reference to Exhibit 10.2 filed with the Registrant’s Current Report on Form 8-K (File No. 814-01013) filed on January 21, 2015). |

|       |                                                                                                                                                                                                                                                            |
|-------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.13 | Administration Agreement by and between Registrant and FSC CT LLC dated as of January 1, 2014 (Incorporated by reference to Exhibit 10.1 filed with the Registrant’s Quarterly Report on Form 10-Q (File No. 814-010103) filed on February 9, 2015). |

|       |                                                                                                                                                                                                                                                                                                                                                                                  |
|-------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.14 | Amendment No. 3 to the Amended and Restated Credit Agreement by and among the lenders referred to therein, FS Senior Funding LLC, Natixis, New York Branch, and U.S. Bank National Association, dated as of May 4, 2015 (Incorporated by reference to Exhibit 10.1 filed with the Registrant’s Quarterly Report on Form 10-Q (File No. 814-010103) filed on May 11, 2015). |

|       |                                                                                                                                                                                                                                                                                                                                                                                                                            |
|-------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.15 | Class A-R Note Purchase Agreement, by and among FS Senior Funding Ltd., as issuer, FS Senior Funding CLO LLC, as co-issuer, Natixis, New York Branch, as Class A-R Note Agent, and each of the Class A-R Noteholders parties thereto, dated as of May 28, 2015 (Incorporated by reference to Exhibit 10.1 filed with the Registrant’s Quarterly Report on Form 10-Q (File No. 814-010103) filed on August 10, 2015). |

|       |                                                                                                                                                                                                                                                                                                    |
|-------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.16 | Master Transfer Agreement by and between Registrant, as the seller, and FS Senior Funding Ltd., as the buyer, dated as of May 28, 2015 (Incorporated by reference to Exhibit 10.2 filed with the Registrant’s Quarterly Report on Form 10-Q (File No. 814-010103) filed on August 10, 2015). |

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|       |                                                                                                                                                                                                                                                                                                               |
|-------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.17 | Collateral Management Agreement by and between FS Senior Funding Ltd., as issuer, and Registrant, as collateral manager, dated as of May 28, 2015 (Incorporated by reference to Exhibit 10.3 filed with the Registrant’s Quarterly Report on Form 10-Q (File No. 814-010103) filed on August 10, 2015). |

|       |                                                                                                                                                                                                                                                                                                         |
|-------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.18 | Sub-Advisory Agreement between Registrant, as collateral manager, and Fifth Street Management LLC, as sub-advisor, dated as of May 28, 2015 (Incorporated by reference to Exhibit 10.4 filed with the Registrant’s Quarterly Report on Form 10-Q (File No. 814-010103) filed on August 10, 2015). |

|       |                                                                                                                                                                                                                                                     |
|-------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 10.19 | Loan and Security Agreement between East West Bank and Registrant, dated as of January 6, 2016 (Incorporated by reference to Exhibit 10.1 filed with Registrant’s Current Report on Form 8-K (File No. 814-01013) filed on January 12, 2016). |

|      |                                                                                                                                                                                                                                            |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 11.1 | Computation of Per Share Earnings (included in the Notes to the Financial Statements contained in the Company’s Annual Report on Form 10-K (File No. 814-01013), for the year ended September 30, 2016, filed on December 13, 2016). |

|      |                                                                                                                                                                                                                                               |
|------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 14.1 | Joint Code of Ethics of Registrant and Fifth Street Finance Corp. (Incorporated by reference to Exhibit(r)(1) filed with Fifth Street Finance Corp.'s  Registration Statement on Form N-2 (File No. 333-186101) filed on September 26, 2013). |

|      |                                                                                                                                                                                                                                                             |
|------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 14.2 | Code of Ethics of Fifth Street Management LLC and Fifth Street CLO Management LLC (Incorporated by reference to Exhibit (r)(2) filed with Fifth Street Finance Corp.'s Registration Statement on Form N-2 (File No. 333-214129) filed on October 17, 2016). |

|       |                                                                                                                |
|-------|----------------------------------------------------------------------------------------------------------------|
| 31.1* | Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934. |

|       |                                                                                                                |
|-------|----------------------------------------------------------------------------------------------------------------|
| 31.2* | Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934. |

|       |                                                                                                                      |
|-------|----------------------------------------------------------------------------------------------------------------------|
| 32.1* | Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350). |

|       |                                                                                                                      |
|-------|----------------------------------------------------------------------------------------------------------------------|
| 32.2* | Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350). |

|       |                                                                                                                                                                                                                           |
|-------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 99.1* | Audited Financial Statements of FSFR Glick JV LLC as of September 30, 2016 and 2015 and for the year ended September 30, 2016 and the period from April 21, 2015 (commencement of operations) through September 30, 2015. |

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|                                         |
|-----------------------------------------|
|                                         |  |  |
|                                    |   |   |
| FIFTH STREET SENIOR FLOATING RATE CORP. |
|                                    |   |
| By:                                     |   | /s/    Ivelin M. Dimitrov |
|                                    |   | Ivelin M. Dimitrov |
|                                    |   | Chief Executive Officer |
|                                    |   |
| By:                                     |   | /s/    Steven M. Noreika |
|                                    |   | Steven M. Noreika |
|                                    |   | Chief Financial Officer |

|                                                                                                                                                                                                                                                         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                                                                                                                         |  |  |  |  |
|                                                                                                                                                                                                                                                    |   |   |   |   |
| Signature                                                                                                                                                                                                                                               |    | Title |   | Date |
|                                                                                                                                                                                                                                                    |   |   |
| /s/    IVELIN M. DIMITROV          Ivelin M. Dimitrov                                                                                                                             |    | Chief Executive Officer(principal executive officer) |   | December 23, 2016 |
|                                                                                                                                                                                                                                                    |   |   |
| /s/    STEVEN M. NOREIKA  Steven M. Noreika                                                                                                                                                                                         |    | Chief Financial Officer(principal financial officer andprincipal accounting officer) |   | December 23, 2016 |
|                                                                                                                                                                                                                                                    |   |   |
| /s/    TODD G. OWENS                  Todd G. Owens                                                                                                                                                                                 |    | President |   | December 23, 2016 |
|                                                                                                                                                                                                                                                    |   |   |
| /s/    BERNARD D. BERMAN                 Bernard D. Berman                                                                                     |    | Chairman |   | December 23, 2016 |
|                                                                                                                                                                                                                                                    |   |   |   |   |
| /s/    JAMES CASTRO-BLANCO                  James Castro-Blanco                                                                           |    | Director |   | December 23, 2016 |
|                                                                                                                                                                                                                                                    |   |   |   |   |
| /s/    RICHARD W. COHEN                  Richard W. Cohen                                                                                 |    | Director |   | December 23, 2016 |
|                                                                                                                                                                                                                                                    |   |   |
| /s/    RICHARD P. DUTKIEWICZ  Richard P. Dutkiewicz                                                                                                                                                                                 |    | Director |   | December 23, 2016 |
|                                                                                                                                                                                                                                                    |   |   |
| /s/    JEFFREY R. KAY                    Jeffrey R. Kay                                                                                                                                                                             |    | Director |   | December 23, 2016 |
|                                                                                                                                                                                                                                                    |   |   |   |   |
| /s/    DOUGLAS F. RAY                                Douglas F. Ray |   | Director |   | December 23, 2016 |