United States Oil Fund (NYSE: USO) furnishes August 2025 monthly account statement

Rhea-AI Filing Summary

United States Oil Fund, LP furnished a monthly account statement for the month ended August 31, 2025. The disclosure states that the statement is presented as a Statement of Income (Loss) and a Statement of Changes in Net Asset Value, in line with Rule 4.22 under the Commodity Exchange Act.

The account statement is attached as an exhibit to this current report and is also available on the fund’s website at www.uscfinvestments.com. The information is being furnished rather than filed under the Exchange Act, which means it is not automatically subject to certain liability provisions or incorporated into other securities law filings unless specifically referenced.

8-K Event Classification

2 items: 7.01, 9.01

2 items

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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UNITED STATES

SECURITIES AND EXCHANGE COMMISION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): September 29, 2025

UNITED STATES OIL FUND, LP

(Exact name of registrant as specified in its charter)

Delaware	001-32834	20-2830691
(State or other jurisdiction	(Commission File Number)	(I.R.S. Employer
of incorporation)		Identification No.)
	1850 Mt. Diablo Boulevard, Suite 640
	Walnut Creek, California 94596
(510) 522-9600	(Address of principal executive offices) (Zip Code)
Registrant’s telephone number,
including area code

Not Applicable

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

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

¨ Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered:
Shares of United States Oil Fund, LP		USO		NYSE Arca, Inc.

Item 7.01. Regulation FD Disclosure.

On September 29, 2025, United States Oil Fund, LP (the “Registrant”) issued its monthly account statement for the month ended August 31, 2025, which is presented in the form of a Statement of Income (Loss) and a Statement of Changes in Net Asset Value, as required pursuant to Rule 4.22 under the Commodity Exchange Act. A copy of the monthly account statement is furnished as Exhibit 99.1 to this Current Report on Form 8-K and also can be found on the Registrant’s website at www.uscfinvestments.com. The information furnished in this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in any such filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit 99.1

SIGNATURES

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

		UNITED STATES OIL FUND, LP
		By:	United States Commodity Funds LLC, its general partner
Date:	September 29, 2025	By:	/s/ Stuart P. Crumbaugh
		Name:	Stuart P. Crumbaugh
		Title:	Chief Financial Officer

FAQ

What did United States Oil Fund, LP (USO) disclose in this 8-K?

United States Oil Fund, LP furnished its monthly account statement for the month ended August 31, 2025, including a Statement of Income (Loss) and a Statement of Changes in Net Asset Value.

Where can investors find the August 31, 2025 monthly account statement for USO?

The monthly account statement is attached as Exhibit 99.1 to the report and is also available on the fund’s website at www.uscfinvestments.com.

Is the USO monthly account statement considered filed or furnished under the Exchange Act?

The report states that the monthly account statement, including Exhibit 99.1, is being furnished, not filed, under the Securities Exchange Act of 1934.

What financial information does the USO monthly account statement include?

The statement is presented as a Statement of Income (Loss) and a Statement of Changes in Net Asset Value, as required by Rule 4.22 under the Commodity Exchange Act.

Who signed the USO 8-K for the August 31, 2025 monthly statement?

The report was signed on behalf of United States Oil Fund, LP by its general partner, United States Commodity Funds LLC, through Stuart P. Crumbaugh, Chief Financial Officer.