UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-D

ASSET-BACKED ISSUER

DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the distribution period from

July 1, 2025 to July 31, 2025

Commission File Number of issuing entity: 333-166301-16

Central Index Key of issuing entity: 1589224

SLM STUDENT LOAN TRUST 2013-6

(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, LLC

(Exact name of sponsor as specified in its charter)

Mai Le-Cao (703) 984-6736

(Name and telephone number, including area code, of the person to contact in connection with this filing)

Delaware

(State or other jurisdiction of

incorporation or organization of the

issuing entity)

04-3480392

54-1843973

(I.R.S. Employer Identification Nos.)

c/o Deutsche Bank Trust Company Delaware

111 Continental Drive, Suite 102

Newark, Delaware

19713

(Zip Code)

(Address of principal executive offices

of issuing entity)

(703) 984-6736

(Telephone number including area code)

Not Applicable

(Former name, former address, if changed since last report)

Registered/reporting pursuant to (check one)

				Name of exchange
Title of class	Section 12(b)	Section 12(g)	Section 15(d)	(If Section 12(b))

Class A Student Loan Backed Notes	☐	☐	☑
Class B Student Loan Backed Notes	☐	☐	☑

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 ☑ No ☐

PART I — DISTRIBUTION INFORMATION

Item 1.

Distribution and Pool Performance Information.

On August 25, 2025, SLM Student Loan Trust 2013-6 (the “Trust”) made its regular monthly distribution of funds to holders of its Student Loan-Backed Notes. Navient Solutions, LLC (formerly, Navient Solutions, Inc.), as the administrator, distributed the Monthly Distribution Report for the Trust for the period identified on the cover of this Form 10-D to the Indenture Trustee, on behalf of the Trust’s noteholders of record. This Monthly Distribution Report is attached to this Report as Exhibit 99.1. This report as well as other information about the Trust is also available on the Administrator’s website at http://www.navient.com/about/investors/debtasset/slmsltrusts/. There is no activity to report under Rule 15Ga-1(a) under the Securities Exchange Act of 1934 with respect to the Trust for the distribution period referred to in the second sentence of this paragraph. The depositor of the Trust filed its most recent report on Form ABS-15G on February 7, 2025 (such report is available at www.sec.gov under the depositor’s CIK No. 0000949114).

PART II — OTHER INFORMATION

Item 2.

Legal Proceedings.

The following is disclosure received from Navient Solutions, LLC (formerly, Navient Solutions, Inc.) ("Navient Solutions"), the servicer for this transaction.

Navient Corporation (“Navient”) has been named as defendant in a number of putative class action and other cases alleging violations of various state and federal consumer protection laws including the Telephone Consumer Protection Act, the Consumer Financial Protection Act of 2010 (CFPA), the Fair Credit Reporting Act (FCRA), the Fair Debt Collection Practices Act (FDCPA), in adversarial proceedings under the United States Bankruptcy Code, and various state consumer protection laws. At this point in time, Navient is unable to anticipate the timing of a resolution or the impact that these legal proceedings may have on its consolidated financial position, liquidity, results of operation or cash flows. As a result, it is not possible at this time to estimate a range of potential exposure, if any, for amounts that may be payable in connection with these matters and loss contingency accruals have not been established. It is possible that an adverse ruling or rulings may have a material adverse impact on Navient, Navient Solutions and/or their affiliates or on the financial ability of the depositor, the servicer or a seller to fulfill an obligation to purchase or repurchase trust student loans in connection with a breach of representation, warranty or covenant.

The following is disclosure received from Deutsche Bank National Trust Company and Deutsche Bank Trust Company Americas. Deutsche Bank National Trust Company (“DBNTC”) and Deutsche Bank Trust Company Americas (“DBTCA”) have been sued by investors in civil litigation concerning their role as trustees for certain residential (“RMBS”) trusts.

On December 30, 2015, IKB International, S.A. in Liquidation and IKB Deutsche Industriebank A.G. (collectively, “IKB”), as an investor in 37 RMBS trusts, filed a summons with notice in the Supreme Court of the State of New York, New York County, against DBNTC and DBTCA as trustees of the trusts. On May 27, 2016, IKB served its complaint asserting claims for breach of contract, breach of fiduciary duty, breach of duty to avoid conflicts of interest, violation of the Streit Act, violation of the TIA, violation of Regulation AB, and violation of Section 9 of the Uniform Commercial Code. IKB alleges that DBNTC and DBTCA are liable for over U.S. $268 million in damages. On October 5, 2016, DBNTC and DBTCA, together with several other trustees defending lawsuits by IKB, filed a joint motion to dismiss. On January 6, 2017, IKB filed a notice of discontinuance, voluntarily dismissing with prejudice all claims as to three trusts. On June 20, 2017, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to four additional trusts. On January 27, 2021, the court granted in part and denied in part DBNTC and DBTCA’s motion to dismiss. The court granted the motion to dismiss with respect to IKB’s claims for violations of the Streit Act, Regulation AB, and Section 9 of the Uniform Commercial Code, as well as certain aspects of IKB’s claims for breach of contract, breach of fiduciary duty, and violation of the TIA. The court denied the remainder of the motion to dismiss. IKB’s remaining claims for breach of contract, breach of fiduciary duty, breach of duty to avoid conflicts of interest, and violation of the TIA will proceed. On May 10, 2021, DBNTC and DBTCA filed a notice of appeal with the New York Supreme Court Appellate Division, First Department, regarding certain aspects of the court’s order on the motion to dismiss. On May 20, 2021, IKB filed a notice of cross appeal with respect to other aspects of that order. On August 30, 2022, the New York Supreme Court, Appellate Division, First Department affirmed in part and reversed in part the court’s order on the motion to dismiss. After DBNTC and DBTCA appealed the First Department’s decision, on June 15, 2023, the New York Court of Appeals reversed the First Department’s decision in part, dismissing certain additional contract claims, as well as IKB’s claims for breach of fiduciary duty and breach of duty to avoid conflicts of interest. On June 2, 2021, IKB filed a motion for re-argument regarding certain aspects of the court’s order on the motion to dismiss, which the court denied on August 3, 2021. On May 13, 2021, DBNTC and DBTCA filed an answer to the complaint. On October 28, 2021, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to seven additional trusts. On December 29, 2021, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to one additional trust. On April 22, 2022, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to 17 certificates at issue, including all claims as to 5 trusts. On February 28, 2023, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to two trusts, leaving 15 trusts at issue. On November 21, 2023, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to three trusts, leaving 12 trusts at issue. On November 14, 2024, DBNTC and DBTCA filed a motion for summary judgment. Also on November 14, 2024, IKB filed a motion for partial summary judgment. On August 11, 2025, the court granted in part and denied in part both motions. Certain aspects of both motions remain pending before the court.

Item 3.

Sales of Securities and Use of Proceeds. None.

Item 4.

Defaults Upon Senior Securities. None.

Item 5.

Submission of Matters to a Vote of Security Holders. None.

Item 6.

Significant Obligors of Pool Assets. No updates to report.

Item 7.

Change in Sponsor Interest in the Securities. None.

Item 8.

Significant Enhancement Provider Information. No updates to report.

Item 9.

Other Information. None.

Item 10.

Exhibits.

(a)

99.1 Monthly Distribution Report for SLM Student Loan Trust 2013-6 in relation to the distribution for August 2025.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Trust has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: September 5, 2025	SLM STUDENT LOAN TRUST 2013-6

	By:	NAVIENT SOLUTIONS, LLC, the Administrator

	By:	/s/ MAI LE-CAO
	Name:	Mai Le-Cao
	Title:	Managing Director

INDEX TO EXHIBITS

Exhibit Number		Exhibit

99.1		Monthly Distribution Report for SLM Student Loan Trust 2013-6 in relation to the distribution for August 2025.

SLM Student Loan Trust 2013-6 10-D