ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D)







UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549





FORM 10-K





(Mark One)

|x | Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
|- | ------------------------------------------------------------------------------------

For the fiscal year ended December 31, 2015

or



| ̈ | Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
|- | ----------------------------------------------------------------------------------------

For the transition period from
 to

Commission File Number of issuing entity: 333-166301-11

Central Index Key of issuing entity: 0001565531





SLM STUDENT
LOAN TRUST 2013-1

(Exact name of issuing entity as specified in its charter)





Commission File Number of depositor: 333-166301

Central Index Key of depositor: 0000949114





NAVIENT
FUNDING, LLC

(Exact name of depositor as specified in its charter)





Central Index Key of sponsor: 0001601725





NAVIENT
SOLUTIONS, INC.

(Exact name of sponsor as specified in its charter)







|                                               |  |                                      
|---------------------------------------------- |  | -------------------------------------
|DELAWARE                                       |  | 04-3480392
04-3480392
54-1843973     
|(State or other Jurisdiction
of Incorporation) |  | (I.R.S. Employer
Identification Nos.)

c/o Deutsche Bank Trust Company Americas

60 Wall Street, 27th Floor

Mailstop NYC 60-2720

New
York, New York 10005

(Address of principal executive offices of issuing entity)

(703) 984-5858

Registrants telephone number, including area code

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act: None





Indicate by check mark if registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities
Act.    Yes   ̈    No  x

Indicate by check mark if registrant is not required to file reports pursuant to Section 13 or 15(d) of the
Act.    Yes   ̈    No  x

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the
Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past
90 days.    Yes  x    No   ̈

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data
File required to be submitted and posted pursuant to Rule 405 of Regulations S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such
files).    Yes  x    No   ̈

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is
not contained herein, and will not be contained, to the best of registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.   ̈

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated
filer, or a non-accelerated filer. See the definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act (check one):



|                        |  |                                                  |  |                           |  |  
|----------------------- |  | ------------------------------------------------ |  | ------------------------- |  | -
|Large Accelerated Filer |  |  ̈                                                |  | Accelerated Filer         |  |  ̈
|                        |  |                                                  | 
|Non-Accelerated Filer   |  | x  (Do not check if a smaller reporting company) |  | Smaller Reporting Company |  |  ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the
Exchange Act).    Yes   ̈    No  x

State the aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which
the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrants most recently completed second fiscal quarter.

Not applicable.

Indicate by
check mark whether the registrant has filed all documents and reports required to be filed by section 12, 13, or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court.

Not applicable.

Indicate the
number of shares outstanding of each of the registrants class of common stock, as of the latest practicable date.

Not applicable.

List hereunder the following documents if incorporated by reference and the Part of the Form 10-K (e.g. Part I, Part II,
etc.) into which the document is incorporated: (1) Any annual report to security holders; (2) Any proxy or information statement; and (3) Any prospectus filed pursuant to Rule 424(b) or (c) under the Securities Act of 1933.
The listed documents should be clearly described for identification purposes (e.g. annual report to security holders for fiscal year ended December 24, 1980).

Not applicable.

This Annual
Report on Form 10-K (the Report) is filed with respect to SLM Student Loan Trust 2013-1 (the Issuing Entity). Certain information requested by this Report is omitted pursuant to Regulation AB (17 CFR 229.1101) and SEC
Releases 33-8518; 34-50905; December 24, 2004 (Regulation AB) and General Instruction J to Form 10-K.









---

PART I

Item 1. Business

Omitted.

Item 1A. Risk Factors

Omitted.

Item 1B. Unresolved Staff Comments

Not Applicable.

Item 2. Properties

Omitted.

Item 3. Legal
Proceedings

Omitted.

Item 4.
Mine Safety Disclosures.

Not Applicable.



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PART II

Item 5. Market for Registrants Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Omitted.

Item 6. Selected Financial
Data

Omitted.

Item 7.
Managements Discussion and Analysis of Financial Condition and Results of Operation

Omitted.

Item 7A. Quantitative and Qualitative Disclosures about Market Risk

Omitted.

Item 8. Financial Statements
and Supplementary Data

Omitted.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

Omitted.

Item 9A. Controls and
Procedures

Omitted.

Item 9B.
Other Information

Nothing to report.



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PART III

Item 10. Directors, Executive Officers, and Corporate Governance

Omitted.

Item 11. Executive
Compensation

Omitted.

Item 12.
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Omitted.

Item 13. Certain Relationships, Related Transactions, and Director Independence

Omitted.

Item 14. Principal Accountant
Fees and Services

Omitted.

The
following information is substitute information provided in accordance with General Instruction J to Form 10-K:

Item 1112(b) of Regulation
AB. Significant Obligor Financial Information

No single obligor represents more than 10% of the pool assets held by the Issuing
Entity.

Items 1114(b)(2) of Regulation AB. Credit Enhancement and Other Support, Except for Certain Derivatives

No entity or group of affiliated entities provides external credit enhancement or other support with respect to payments on the notes issued by
the Issuing Entity.

Items 1115(b) of Regulation AB. Credit Derivatives Instruments

No entity or group of affiliated entities provides derivative instruments with respect to payments on the notes issued by the Issuing Entity.

Item 1117 of Regulation AB. Legal Proceedings

Other than as stated in the following paragraph, no legal proceedings are pending against the Issuing Entity, Navient Solutions, Inc., as the
Sponsor, the Servicer and the Administrator, Navient Funding, LLC, as the Depositor (the Depositor) and registrant under Registration Statement Number 333-166301 (the Registrant) or to the Registrants knowledge,
Deutsche Bank National Trust Company, as the Indenture Trustee that are or would be material to the holders of the notes issued by the Issuing Entity, nor does the Registrant know of any such proceeding contemplated by any governmental authorities.

On June 18, 2014, a group of investors, including funds managed by Blackrock Advisors, LLC, PIMCO-Advisors, L.P., and others, filed
a derivative action against Deutsche Bank Trust Company Americas (DBTCA) and Deutsche Bank National Trust Company (DBNTC) in New York State Supreme Court purportedly on behalf of and for the benefit of 544 private-label RMBS
trusts asserting claims for alleged violations of the U.S. Trust Indenture Act of 1939 (TIA), breach of contract, breach of fiduciary duty and negligence based on DBNTC and DBTCAs alleged failure to perform their duties as trustees for the
trusts. Plaintiffs subsequently dismissed their state court complaint and filed a derivative and class action complaint in the U.S. District Court for the Southern District of New York on behalf of and for the benefit of 564 private-label RMBS
trusts, which substantially overlapped with the trusts at issue in the state court action. The complaint alleges that the trusts at issue have suffered total realized collateral losses of U.S. $89.4 billion, but the complaint does not include a
demand for money damages in a sum certain. DBNTC and DBTCA filed a motion to dismiss, and on January 19, 2016, the court partially granted the motion on procedural grounds: as to the 500 trusts that are governed by Pooling and Servicing
Agreements, the court declined to exercise jurisdiction. The court did not rule on substantive defenses asserted in the motion to dismiss as to the 64 trusts formed under indentures for which it retained jurisdiction. Instead, the court ordered
plaintiffs to file an amended complaint as to those indenture trusts. On February 23, 2016, plaintiffs filed an amended complaint as to 62 of the 64 indenture trusts included in the original U.S. District Court complaint. DBNTC and DBTCA will
have an opportunity to file new defensive motions with respect to this amended complaint. It is anticipated that plaintiffs will, in the near future, file a new state court complaint as to some or all of the 500 trusts governed by Pooling and
Servicing Agreements which were dismissed from the U.S. District Court action. On December 30, 2015, IKB International, S.A. and IKB Deutsche Industriebank A.G. filed a Summons With Notice in New York state court naming as defendants DBNTC and
DBTCA, as trustees of 37 RMBS trusts (the IKB Action). The claims in the IKB Action appear to be substantively similar to the SDNY Action. The IKB Action is not styled as a putative class action, but may attempt to bring derivative
claims on behalf of the named RMBS Trusts. DBTCA intends to



4



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vigorously defend the IKB Action. DBTCA has no pending legal proceedings (including, based on DBTCAs present evaluation, the litigation disclosed in this paragraph) that would materially
affect its ability to perform its duties as trustee on behalf of the trust identified on the cover of this Form 10-K. Such trust is not a party to this litigation.

Item 1119 of Regulation AB. Affiliations and Certain Relationships and Related Transactions

Pursuant to the Instruction to Item 1119 of Regulation AB, information required by Item 1119 has been omitted from this Report
because substantially the same information related to affiliates of the Issuing Entity and certain relationships and related transactions is provided in the section titled The Sponsor, Servicer and Administrator of the base prospectus,
previously filed with the SEC on May 22, 2014 pursuant to Securities Act Rule 424, file number 333-190926.

Item 1122 of Regulation AB.
Compliance with Applicable Servicing Criteria

Navient Solutions, Inc., as the Servicer, Navient Solutions, Inc., as the Administrator
and Deutsche Bank National Trust Company, as the Indenture Trustee (collectively, the Servicing Parties) have each been identified by the Depositor as parties participating in the servicing function with respect to the asset pool held by
the Issuing Entity. Each of the Servicing Parties has completed a report on assessment of compliance with the servicing criteria applicable to it (each a Servicing Report), which Servicing Reports are attached as exhibits to this Form
10-K. Each of the Servicing Parties have provided an attestation report (each an Attestation Report) by one or more public accounting firms, which reports are also attached as exhibits to this Report. None of the Servicing Reports or
Attestation Reports has identified any material instance of noncompliance with the servicing criteria as applicable to the respective Servicing Party. There have been no material instances of noncompliance with the servicing criteria for the period
of this Report.

Item 1123 of Regulation AB. Servicer Compliance Statement

A Servicer Compliance Statement for each of Navient Solutions, Inc., as Servicer, and Navient Solutions, Inc., as Administrator, is included as
an exhibit to this Report.



5



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PART IV

Item 15. Exhibits and Financial Statement Schedules



| | (a) | List of Documents Filed as Part of this Annual Report on Form 10-K
| | --- | ------------------------------------------------------------------



| | (1) | Not applicable.
| | --- | ---------------



| | (2) | Not applicable.
| | --- | ---------------



| | (3) | See Item 15 (b) below.
| | --- | ----------------------



| | (b) | Exhibits Required by Item 601 of Regulation S-K
| | --- | -----------------------------------------------



|        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|EXHIBIT |  | DESCRIPTION                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|        | 
|4.1     |  | Indenture dated as of February 14, 2013 among SLM Student Loan Trust 2013-1, Deutsche Bank National Trust Company, as indenture trustee, and Deutsche Bank Trust Company Americas, as eligible lender trustee, which is
incorporated by reference from Exhibit 4.7 of the Current Report on Form 8-K of the registrant, as filed with the Commission on February 14, 2013, with a file number of 333-166301-11.                                                                                                               
|        | 
|10.1    |  | Indenture dated as of February 14, 2013 among SLM Student Loan Trust 2013-1, Deutsche Bank National Trust Company, as indenture trustee, and Deutsche Bank Trust Company Americas, as eligible lender trustee, which is
incorporated by reference from Exhibit 4.7 of the Current Report on Form 8-K of the registrant, as filed with the Commission on February 14, 2013, with a file number of 333-166301-11.                                                                                                               
|        | 
|10.2    |  | Servicing Agreement dated as of February 14, 2013 among SLM Student Loan Trust 2013-1, Deutsche Bank National Trust Company, as indenture trustee, Deutsche Bank Trust Company Americas, as eligible lender trustee, and Navient
Solutions, Inc., as servicer and as administrator, which is incorporated by reference from Exhibit 99.8 of the Current Report on Form 8-K of the registrant, as filed with the Commission on February 14, 2013, with a file number of
333-166301-11.                                         
|        | 
|10.3    |  | Administration Agreement dated as of February 14, 2013 among SLM Student Loan Trust 2013-1, Deutsche Bank National Trust Company, as indenture trustee, Deutsche Bank Trust Company Americas, as eligible lender trustee, Navient
Funding, LLC, as depositor, and Navient Solutions, Inc., as servicer and as administrator, which is incorporated by reference from Exhibit 99.7 of the Current Report on Form 8-K of the registrant, as filed with the Commission on February 14,
2013, with a file number of 333-166301-11.
|        | 
|31.1    |  | Rule 13a-14(d)/15d-14(d) Certification. (Section 302 Certification).                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|        | 
|33.1    |  | Report on Assessment of Compliance with Servicing Criteria concerning servicing activities of Navient Solutions, Inc., as Servicer and Administrator, as of and for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                         
|        | 
|33.2    |  | Report on Assessment of Compliance with Servicing Criteria concerning servicing activities of Deutsche Bank National Trust Company, as Indenture Trustee, as of and for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                     
|        | 
|34.1    |  | Independent Accountants Attestation Report concerning servicing activities of Navient Solutions, Inc., as Servicer and Administrator, as of and for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                                        
|        | 
|34.2    |  | Independent Accountants Attestation Report concerning servicing activities of Deutsche Bank National Trust Company, as Indenture Trustee, as of and for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                                    
|        | 
|35.1    |  | Statement of Compliance of Navient Solutions, Inc., as Servicer and Administrator for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                                                                                                       



| | (c) | Not Applicable.
| | --- | ---------------



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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) 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.



|                      |  |  |  |                                                                                                             |  |                       |  |                                                                      
|--------------------- |  |  |  | ----------------------------------------------------------------------------------------------------------- |  | --------------------- |  | ---------------------------------------------------------------------
|Dated: March 30, 2016 |  |  |  | NAVIENT FUNDING, LLC, the Depositor
for itself as Registrant and on behalf of SLM Student Loan Trust 2013-1
|                      |  |  | 
|                      |  |  |  | By:                                                                                                         |  | /s/ SOMSAK CHIVAVIBUL
|                      |  |  |  |                                                                                                             |  | Name:                 |  | Somsak Chivavibul                                                    
|                      |  |  |  |                                                                                                             |  | Title:                |  | President and Chief Financial Officer (Senior
Securitization Officer)

SUPPLEMENTAL INFORMATION TO BE FURNISHED WITH REPORTS FILED PURSUANT TO SECTION 15(d) OF THE ACT BY REGISTRANTS WHICH HAVE
NOT REGISTERED SECURITIES PURSUANT TO SECTION 12 OF THE ACT.

No annual report, proxy statement, form of proxy or other proxy soliciting material has
been sent to holders of the notes issued by the Issuing Entity during the period covered by this Annual Report on Form 10-K and the Registrant does not intend to furnish such materials subsequent to the filing of the report.



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INDEX TO EXHIBITS



|              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |  | Exhibit                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|              | 
|4.1           |  | Indenture dated as of February 14, 2013 among SLM Student Loan Trust 2013-1, Deutsche Bank National Trust Company, as indenture trustee, and Deutsche Bank Trust Company Americas, as eligible lender trustee, which is
incorporated by reference from Exhibit 4.7 of the Current Report on Form 8-K of the registrant, as filed with the Commission on February 14, 2013, with a file number of 333-166301-11.                                                                                                               
|              | 
|10.1          |  | Indenture dated as of February 14, 2013 among SLM Student Loan Trust 2013-1, Deutsche Bank National Trust Company, as indenture trustee, and Deutsche Bank Trust Company Americas, as eligible lender trustee, which is
incorporated by reference from Exhibit 4.7 of the Current Report on Form 8-K of the registrant, as filed with the Commission on February 14, 2013, with a file number of 333-166301-11.                                                                                                               
|              | 
|10.2          |  | Servicing Agreement dated as of February 14, 2013 among SLM Student Loan Trust 2013-1, Deutsche Bank National Trust Company, as indenture trustee, Deutsche Bank Trust Company Americas, as eligible lender trustee, and Navient
Solutions, Inc., as servicer and as administrator, which is incorporated by reference from Exhibit 99.8 of the Current Report on Form 8-K of the registrant, as filed with the Commission on February 14, 2013, with a file number of
333-166301-11.                                         
|              | 
|10.3          |  | Administration Agreement dated as of February 14, 2013 among SLM Student Loan Trust 2013-1, Deutsche Bank National Trust Company, as indenture trustee, Deutsche Bank Trust Company Americas, as eligible lender trustee, Navient
Funding, LLC, as depositor, and Navient Solutions, Inc., as servicer and as administrator, which is incorporated by reference from Exhibit 99.7 of the Current Report on Form 8-K of the registrant, as filed with the Commission on February 14,
2013, with a file number of 333-166301-11.
|              | 
|31.1          |  | Rule 13a-14(d)/15d-14(d) Certification. (Section 302 Certification).                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|              | 
|33.1          |  | Report on Assessment of Compliance with Servicing Criteria concerning servicing activities of Navient Solutions, Inc., as Servicer and Administrator, as of and for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                         
|              | 
|33.2          |  | Report on Assessment of Compliance with Servicing Criteria concerning servicing activities of Deutsche Bank National Trust Company, as Indenture Trustee, as of and for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                     
|              | 
|34.1          |  | Independent Accountants Attestation Report concerning servicing activities of Navient Solutions, Inc., as Servicer and Administrator, as of and for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                                        
|              | 
|34.2          |  | Independent Accountants Attestation Report concerning servicing activities of Deutsche Bank National Trust Company, as Indenture Trustee, as of and for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                                    
|              | 
|35.1          |  | Statement of Compliance of Navient Solutions, Inc., as Servicer and Administrator for the year ended December 31, 2015.                                                                                                                                                                                                                                                                                                                                                                                                       



8