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Table of Contents

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

​

​ | ​
☒ | Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the quarterly period ended September 30, 2025.

​

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: 001-32834

United States Oil Fund, LP

(Exact name of registrant as specified in its charter)

​

Delaware |  | 20-2830691
(State or other jurisdiction of |  | (I.R.S. Employer
incorporation or organization) |  | Identification No.)

​

1850 Mt. Diablo Boulevard, Suite 640

Walnut Creek, California 94596

(Address of principal executive offices) (Zip Code)

​

(510) 522-9600

(Registrant’s telephone number, including area code)

​

N/A

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

​

Securities registered or to be 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.

​

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

​

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). ☒ Yes ☐ No

​

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

​

Large Accelerated Filer | ☒ |  | Accelerated Filer | ☐
Non-Accelerated Filer | ☐ |  | Smaller Reporting Company | ☐
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 in Section 13(a) of the Exchange Act. ☐

​

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

​

The registrant had 13,223,603 outstanding shares as of November 3, 2025.

​

​

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Table of Contents

United States Oil Fund, LP

Table of Contents

Part I. FINANCIAL INFORMATION | ​ | Page
| ​ |
Item 1. Financial Statements. | ​ | 1
| ​ |
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations. | ​ | 21
| ​ |
Item 3. Quantitative and Qualitative Disclosures About Market Risk. | ​ | 41
| ​ |
Item 4. Controls and Procedures. | ​ | 42
| ​ |
Part II. OTHER INFORMATION | ​ | ​
| ​ |
Item 1. Legal Proceedings. | ​ | 43
| ​ |
Item 1A. Risk Factors. | ​ | 46
| ​ |
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds. | ​ | 46
| ​ |
Item 3. Defaults Upon Senior Securities. | ​ | 47
| ​ |
Item 4. Mine Safety Disclosures. | ​ | 47
| ​ |
Item 5. Other Information. | ​ | 47
| ​ |
Item 6. Exhibits. | ​ | 48

​

​

​

​

Table of Contents

Part I. FINANCIAL INFORMATION

Item 1. Financial Statements.

Index to Financial Statements

Documents |  | Page
--- | --- | ---
​ | ​ | ​
Statements of Financial Condition at September 30, 2025 (Unaudited) and December 31, 2024 | ​ | 2
| ​ |
Schedules of Investments at September 30, 2025 (Unaudited) and December 31, 2024 | ​ | 3
| ​ |
Statements of Operations (Unaudited) for the three and nine months ended September 30, 2025 and 2024 | ​ | 5
| ​ |
Statements of Changes in Partners’ Capital (Unaudited) for the three and nine months ended September 30, 2025 and 2024 | ​ | 6
| ​ |
Statements of Cash Flows (Unaudited) for the nine months ended September 30, 2025 and 2024 | ​ | 7
| ​ |
Notes to Financial Statements (Unaudited) for the period ended September 30, 2025 | ​ | 8

​

​

​

1

Table of Contents

United States Oil Fund, LP

Statements of Financial Condition

At September 30, 2025 (Unaudited) and December 31, 2024

​

​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2025 |  | December 31, 2024
Assets | ​ | ​ | ​ | ​ | ​ | ​
Cash and cash equivalents (at cost $700,563,699 and $727,450,000, respectively) (Notes 2 and 5) | ​ | $ | 700,563,699 | ​ | $ | 727,450,000
Equity in trading accounts: | ​ |  | ​ | ​ |  | ​
Cash and cash equivalents (at cost $200,948,188 and $280,259,886, respectively) | ​ |  | 200,948,188 | ​ |  | 280,259,886
Unrealized gain (loss) on open commodity futures contracts | ​ | ​ | (2,068,190) | ​ | ​ | 28,431,020
Unrealized gain (loss) on open OTC commodity swap contracts | ​ | ​ | 91,039 | ​ | ​ | (2,068)
Due from Broker | ​ | ​ | — | ​ | ​ | 13,487,676
Receivable for shares sold | ​ | ​ | — | ​ | ​ | 45,270,292
Dividends receivable | ​ | ​ | 2,306,894 | ​ | ​ | 2,777,123
Interest receivable | ​ |  | 774,213 | ​ |  | 1,366,692
Prepaid insurance | ​ | ​ | 251,362 | ​ | ​ | 42,308
ETF transaction fees receivable | ​ | ​ | 1,000 | ​ | ​ | 1,000
​ | ​ | ​ | ​ | ​ | ​ | ​
Total Assets | ​ | $ | 902,868,205 | ​ | $ | 1,099,083,929
​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities and Partners’ Capital | ​ |  | ​ | ​ |  | ​
Payable due to Broker | ​ | $ | 1,490,047 | ​ | $ | 7,872,455
Payable for shares redeemed | ​ | ​ | 14,715,889 | ​ | ​ | —
General Partner management fees payable (Note 3) | ​ |  | 347,549 | ​ |  | 436,917
Professional fees payable | ​ |  | 1,434,780 | ​ |  | 2,011,267
Due to custody | ​ | ​ | — | ​ | ​ | 318,003
Brokerage commissions payable | ​ | ​ | 119,336 | ​ | ​ | 119,336
Directors’ fees payable | ​ |  | 32,131 | ​ |  | 33,106
License fees payable | ​ | ​ | 59,086 | ​ | ​ | 69,358
​ | ​ | ​ | ​ | ​ | ​ | ​
Total Liabilities | ​ | ​ | 18,198,818 | ​ |  | 10,860,442
​ | ​ | ​ | ​ | ​ | ​ | ​
Commitments and Contingencies (Notes 3, 4 & 5) | ​ |  | ​ | ​ |  | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Partners’ Capital | ​ |  | ​ | ​ |  | ​
General Partners | ​ |  | — | ​ |  | —
Limited Partners | ​ |  | 884,669,387 | ​ |  | 1,088,223,487
Total Partners’ Capital | ​ | ​ | 884,669,387 | ​ | ​ | 1,088,223,487
​ | ​ | ​ | ​ | ​ | ​ | ​
Total Liabilities and Partners’ Capital | ​ | $ | 902,868,205 | ​ | $ | 1,099,083,929
​ | ​ | ​ | ​ | ​ | ​ | ​
Limited Partners’ shares outstanding | ​ | ​ | 12,023,603 | ​ | ​ | 14,423,603
Net asset value per share | ​ | $ | 73.58 | ​ | $ | 75.45
Market value per share | ​ | $ | 73.75 | ​ | $ | 75.55

​

See accompanying notes to financial statements.

​

​

2

Table of Contents

United States Oil Fund, LP

Schedule of Investments (Unaudited)

At September 30, 2025

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ |  | Fair |  | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Value/Unrealized | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Gain (Loss) on | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Open | ​ | ​
​ | ​ | ​ | ​ | ​ | Number of | ​ | Commodity | ​ | % of Partners’
​ | ​ | Notional Amount | ​ | Contracts | ​ | Contracts | ​ | Capital
Open Commodity Futures Contracts - Long |  | ​ |  |  |  |  | ​ |  |  |
United States Contracts |  | ​ |  |  |  |  | ​ |  |  |
NYMEX WTI Crude Oil Futures CL November 2025 contracts, expiring October 2025* | ​ | $ | 748,138,130 |  | 11,962 | ​ | $ | (2,068,190) |  | (0.23)

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Shares/Principal |  | ​ | ​ |  | % of Partners’
​ | ​ | Amount | ​ | Market Value | ​ | Capital
Cash Equivalents |  |  |  | ​ |  |  |
United States Money Market Funds |  |  |  | ​ |  |  |
Dreyfus Institutional Preferred Government Money Market Fund - Institutional Shares, 4.09%# | ​ | 375,000,000 | ​ | $ | 375,000,000 | ​ | 42.39
Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares, 4.05%# |  | 300,000,000 | ​ | ​ | 300,000,000 |  | 33.91
Total United States Money Market Funds |  |  | ​ | $ | 675,000,000 |  | 76.30

​

Open OTC Commodity Swap Contracts

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ |  | Unrealized
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Fair | ​ | ​ | ​ | ​ | Gain (Loss)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Value/Open | ​ | ​ | ​ | ​ | on
Fund Receives | ​ | ​ | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​ | Commodity |  | Upfront | ​ | Commodity
from | ​ | Fund Pays | ​ |  | ​ | Payment | ​ | Expiration | ​ | Notional | ​ | Swap | ​ | Payments/(Premiums | ​ | Swap
Counterparty | ​ | Counterparty | ​ | Counterparty | ​ | Frequency | ​ | Date | ​ | Amount | ​ | Contracts | ​ | Received) | ​ | Contracts(a)
MACQUARIE MQCP361E 07212025Index(b) |  | 0.26 | % | Macquarie Bank Ltd. |  | monthly |  | 01/21/2026 | ​ | $ | 72,424,781 | ​ | $ | 72,424,265 | ​ | $ | — | ​ | $ | (516)
SOC GEN SGIXCWTI 06202025Index(b) |  | 0.25 | % | Societe Generale |  | monthly |  | 12/19/2025 | ​ | $ | 66,163,540 | ​ | $ | 66,255,095 | ​ | $ | — | ​ | $ | 91,555
Total Open OTC Commodity Swap Contracts˄ |  |  |  | ​ |  |  |  |  | ​ | $ | 138,588,321 | ​ | $ | 138,679,360 | ​ | $ | — | ​ | $ | 91,039

(a)Reflects the value at reset date of September 30, 2025.

(b)Custom index comprised of a basket of underlying instruments.

*Collateral amounted to $194,647,699 on open commodity futures contracts.

˄Collateral amounted to $6,300,489 on open OTC commodity swap contracts.

#Reflects the 7-day yield at September 30, 2025.

See accompanying notes to financial statements.

​

3

Table of Contents

United States Oil Fund, LP

Schedule of Investments

At December 31, 2024

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  |  |  | Fair |  |
​ | ​ | ​ | ​ | ​ | ​ | ​ | Value/Unrealized | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Gain (Loss) on | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Open | ​ | ​
​ | ​ | ​ | ​ | Number of | ​ | Commodity | ​ | % of Partners’
​ | ​ | Notional Amount | ​ | Contracts | ​ | Contracts | ​ | Capital
Open Commodity Futures Contracts - Long |  | ​ |  |  |  |  | ​ |  |  |
United States Contracts |  | ​ |  |  |  |  | ​ |  |  |
NYMEX WTI Crude Oil Futures CL February 2025 contracts, expiring January 2025* | ​ | $ | 766,513,460 |  | 11,084 | ​ | $ | 28,431,020 |  | 2.61

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Shares/Principal |  | ​ | ​ |  | % of Partners’
​ | ​ | Amount | ​ | Market Value | ​ | Capital
Cash Equivalents |  | ​ |  |  | ​ |  |  |
United States Money Market Funds |  | ​ |  |  | ​ |  |  |
Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares, 4.43%# |  | ​ | 727,450,000 | ​ | $ | 727,450,000 |  | 66.85
Total United States Money Market Funds | ​ | ​ | ​ | ​ | $ | 727,450,000 |  | 66.85

​

Open OTC Commodity Swap Contracts

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ |  | Unrealized
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Fair | ​ | ​ | ​ | ​ | Gain (Loss)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Value/Open | ​ | Upfront | ​ | on
Fund Receives | ​ |  | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​ | Commodity | ​ | Payments/ | ​ | Commodity
from | ​ | Fund Pays | ​ |  | ​ | Payment | ​ | Expiration | ​ | Notional | ​ | Swap | ​ | (Premiums | ​ | Swap
Counterparty | ​ | Counterparty | ​ | Counterparty | ​ | Frequency | ​ | Date | ​ | Amount | ​ | Contracts |  | Received) | ​ | Contracts(a)
SOC GEN SGIXCWTI 12202024Index(b) |  | 0.25 | % | Societe Generale |  | monthly |  | 06/20/2025 | ​ | $ | 123,976,793 | ​ | $ | 123,975,932 | ​ | $ | — | ​ | $ | (861)
MACQUARIE MQCP361E 07192024Index(b) |  | 0.26 | % | Macquarie Bank Ltd. |  | monthly |  | 01/21/2025 | ​ | $ | 169,418,314 | ​ | $ | 169,417,107 | ​ | $ | — | ​ | $ | (1,207)
Total Open OTC Commodity Swap Contracts˄ |  |  |  |  |  |  |  |  | ​ | $ | 293,395,107 | ​ | $ | 293,393,039 | ​ | $ | — | ​ | $ | (2,068)

(a)Reflects the value at the reset date of December 31, 2024.
(b)Custom index comprised of a basket of underlying instruments.

*Collateral amounted to $263,049,397 on open commodity futures contracts.

˄Collateral amounted to $17,210,489 on open OTC commodity swap contracts.

#Reflects the 7-day yield at December 31, 2024.

See accompanying notes to financial statements.

​

4

Table of Contents

United States Oil Fund, LP

Statements of Operations (Unaudited)

For the three and nine months ended September 30, 2025 and 2024

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Three months ended |  | Nine months ended |  | Nine months ended
​ |  | September 30, 2025 |  | September 30, 2024 | ​ | September 30, 2025 | ​ | September 30, 2024
Income |  | ​ |  |  | ​ |  | ​ | ​ |  |  | ​ |
Gain (loss) on trading of commodity futures and swap contracts: |  | ​ |  |  | ​ |  | ​ | ​ |  |  | ​ |
Realized gain (loss) on closed commodity futures contracts | ​ | $ | (29,807,410) | ​ | $ | (61,805,268) | ​ | $ | 5,568,220 | ​ | $ | 75,755,922
Realized gain (loss) on closed OTC commodity swap contracts | ​ | ​ | (6,618,471) | ​ | ​ | (41,699,515) | ​ | ​ | (8,128,147) | ​ | ​ | 3,001,359
Change in unrealized gain (loss) on open commodity futures contracts | ​ |  | 43,073,400 | ​ |  | (45,194,602) | ​ |  | (30,499,210) | ​ |  | 4,993,638
Change in unrealized gain (loss) on open OTC commodity swap contracts | ​ | ​ | 9,010,427 | ​ | ​ | 293 | ​ | ​ | 93,107 | ​ | ​ | (25)
Dividend income | ​ |  | 6,578,548 | ​ |  | 5,312,002 | ​ |  | 17,146,867 | ​ |  | 13,747,799
Interest income | ​ |  | 3,255,975 | ​ |  | 10,522,882 | ​ |  | 12,697,026 | ​ |  | 35,244,400
ETF transaction fees | ​ | ​ | 69,000 | ​ | ​ | 89,000 | ​ | ​ | 260,000 | ​ | ​ | 297,000
Total Income (Loss) | ​ | $ | 25,561,469 | ​ | $ | (132,775,208) | ​ | $ | (2,862,137) | ​ | $ | 133,040,093
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Expenses | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
General Partner management fees (Note 3) | ​ | $ | 1,108,653 | ​ | $ | 1,431,839 | ​ | $ | 3,351,100 | ​ | $ | 4,506,030
Professional fees | ​ |  | 561,784 | ​ |  | 722,894 | ​ |  | 1,581,081 | ​ |  | 2,177,822
Brokerage commissions | ​ |  | 352,575 | ​ |  | 368,938 | ​ |  | 1,133,961 | ​ |  | 1,110,080
Directors’ fees and insurance | ​ |  | 37,532 | ​ |  | 103,790 | ​ |  | 154,995 | ​ |  | 322,894
License fees | ​ |  | 36,955 | ​ |  | 47,728 | ​ |  | 111,703 | ​ |  | 150,201
Total Expenses | ​ | $ | 2,097,499 | ​ | $ | 2,675,189 | ​ | $ | 6,332,840 | ​ | $ | 8,267,027
Net Income (Loss) | ​ | $ | 23,463,970 | ​ | $ | (135,450,397) | ​ | $ | (9,194,977) | ​ | $ | 124,773,066
Net Income (Loss) per limited partner share | ​ | $ | 0.33 | ​ | $ | (9.77) | ​ | $ | (1.87) | ​ | $ | 2.95
Net Income (Loss) per weighted average limited partner share | ​ | $ | 1.81 | ​ | $ | (7.98) | ​ | $ | (0.68) | ​ | $ | 6.96
Weighted average limited partner shares outstanding | ​ |  | 12,974,152 | ​ |  | 16,975,777 | ​ |  | 13,502,724 | ​ |  | 17,936,377

​

See accompanying notes to financial statements.

​

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United States Oil Fund, LP

Statements of Changes in Partners’ Capital (Unaudited)

For the three and nine months ended September 30, 2025 and 2024

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Limited Partners*
​ | ​ | Three months ended | ​ | Three months ended | ​ | Nine months ended | ​ | Nine months ended
​ |  | September 30, 2025 |  | September 30, 2024 |  | September 30, 2025 |  | September 30, 2024
Balances at beginning of period |  | $ | 1,129,820,954 |  | $ | 1,259,980,186 | ​ | $ | 1,088,223,487 | ​ | $ | 1,567,345,541
Addition of 14,100,000, 26,300,000, 75,400,000 and 85,700,000 partnership shares, respectively | ​ | ​ | 1,052,703,882 | ​ | ​ | 1,944,266,024 | ​ | ​ | 5,549,271,767 | ​ | ​ | 6,355,040,466
Redemption of (17,500,000), (22,900,000), (77,800,000) and (89,900,000) partnership shares, respectively | ​ | ​ | (1,321,319,419) | ​ | ​ | (1,725,871,818) | ​ | ​ | (5,743,630,890) | ​ | ​ | (6,704,235,078)
Net income (loss) | ​ | ​ | 23,463,970 | ​ | ​ | (135,450,397) | ​ | ​ | (9,194,977) | ​ | ​ | 124,773,066
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at end of period |  | $ | 884,669,387 |  | $ | 1,342,923,995 | ​ | $ | 884,669,387 | ​ | $ | 1,342,923,995

* | General Partners’ shares outstanding and capital for the periods presented were zero.

See accompanying notes to financial statements.

​

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United States Oil Fund, LP

Statements of Cash Flows (Unaudited)

For the nine months ended September 30, 2025 and 2024

​

​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended | ​ | Nine months ended
​ |  | September 30, 2025 |  | September 30, 2024
Cash Flows from Operating Activities: |  | ​ |  |  | ​ |
Net income (loss) | ​ | $ | (9,194,977) | ​ | $ | 124,773,066
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: | ​ |  | ​ | ​ |  | ​
Change in unrealized (gain) loss on open commodity futures contracts | ​ |  | 30,499,210 | ​ |  | (4,993,638)
Change in unrealized (gain) loss on open swap contracts | ​ | ​ | (93,107) | ​ | ​ | 25
(Increase) decrease in receivable from Due from Broker | ​ |  | 13,487,676 | ​ |  | —
(Increase) decrease in dividends receivable | ​ |  | 470,229 | ​ |  | (993,725)
(Increase) decrease in interest receivable | ​ | ​ | 592,479 | ​ | ​ | 1,803,560
(Increase) decrease in prepaid insurance | ​ | ​ | (209,054) | ​ | ​ | (37,238)
(Increase) decrease in ETF transaction fees receivable | ​ |  | — | ​ |  | 1,000
Increase (decrease) payable due to custody | ​ | ​ | (318,003) | ​ | ​ | —
Increase (decrease) in payable due to Broker | ​ | ​ | (6,382,408) | ​ | ​ | 1,454,875
Increase (decrease) in General Partner management fees payable | ​ | ​ | (89,368) | ​ | ​ | (83,611)
Increase (decrease) in professional fees payable | ​ |  | (576,487) | ​ |  | (102,539)
Increase (decrease) in directors’ fees payable | ​ |  | (975) | ​ |  | 132
Increase (decrease) in license fees payable | ​ |  | (10,272) | ​ |  | (12,102)
Net cash provided by (used in) operating activities | ​ |  | 28,174,943 | ​ |  | 121,809,805
​ | ​ | ​ | ​ | ​ | ​ | ​
Cash Flows from Financing Activities: | ​ |  | ​ | ​ |  | ​
Addition of partnership shares | ​ |  | 5,594,542,059 | ​ |  | 6,468,825,692
Redemption of partnership shares | ​ |  | (5,728,915,001) | ​ |  | (6,648,343,905)
Net cash provided by (used in) financing activities | ​ |  | (134,372,942) | ​ |  | (179,518,213)
​ | ​ | ​ | ​ | ​ | ​ | ​
Net Increase (Decrease) in Cash and Cash Equivalents | ​ |  | (106,197,999) | ​ |  | (57,708,408)
​ | ​ | ​ | ​ | ​ | ​ | ​
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period | ​ |  | 1,007,709,886 | ​ |  | 1,463,696,515
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period | ​ | $ | 901,511,887 | ​ | $ | 1,405,988,107
​ | ​ | ​ | ​ | ​ | ​ | ​
Components of Cash, Cash Equivalents and Equity in Trading Accounts: | ​ |  | ​ | ​ |  | ​
Cash and cash equivalents | ​ | $ | 700,563,699 | ​ | $ | 1,111,104,063
Equity in Trading Accounts: | ​ |  | ​ | ​ |  | ​
Cash and cash equivalents | ​ |  | 200,948,188 | ​ |  | 294,884,044
Total Cash, Cash Equivalents and Equity in Trading Accounts | ​ | $ | 901,511,887 | ​ | $ | 1,405,988,107

​

See accompanying notes to financial statements.

​

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United States Oil Fund, LP

Notes to Financial Statements (Unaudited)

For the period ended September 30, 2025

NOTE 1 — ORGANIZATION AND BUSINESS

The United States Oil Fund, LP (“USO”) was organized as a limited partnership under the laws of the state of Delaware on May 12, 2005. USO is a commodity pool that issues limited partnership interests (“shares”) that are traded on the NYSE Arca, Inc. (the “NYSE Arca”). Prior to November 25, 2008, USO’s shares traded on the American Stock Exchange (the “AMEX”). USO will continue in perpetuity, unless terminated sooner upon the occurrence of one or more events as described in its Seventh Amended and Restated Agreement of Limited Partnership dated as of December 15, 2017 (the “LP Agreement”), which grants full management control to its general partner, United States Commodity Funds LLC (“USCF”). The investment objective of USO is for the daily changes in percentage terms of its shares’ per share net asset value (“NAV”) to reflect the daily changes in percentage terms of the spot price of light, sweet crude oil delivered to Cushing, Oklahoma, as measured by the daily changes in the price of the Benchmark Oil Futures Contract, plus interest earned on USO’s collateral holdings, less USO’s expenses. The Benchmark Oil Futures Contract is the futures contract for light, sweet crude oil as traded on the New York Mercantile Exchange (the “NYMEX”) that is the near month contract to expire and changes, over a ten-day period, into the NYMEX futures contract that is the next month to expire. The change from the near month contract to the next month contract occurs at the beginning of each month and will be approximately proportional, relative to total net assets, over each day of the ten-day roll period.

USO seeks to achieve its investment objective by investing so that the average daily percentage change in USO’s NAV for any period of 30 successive valuation days will be within plus/minus ten percent (10%) of the average daily percentage change in the price of the Benchmark Oil Futures Contract over the same period. As a result, investors should be aware that USO would meet its investment objective even if there are significant deviations between changes in its daily NAV and changes in the daily price of the Benchmark Oil Futures Contract provided that the average daily percentage change in USO’s NAV over 30 successive valuation days is within plus/minus ten percent (10%) of the average daily percentage change in the price of the Benchmark Oil Futures Contract over the same period.

USO seeks to achieve its investment objective by investing primarily in futures contracts for light, sweet crude oil and other types of crude oil, diesel-heating oil, gasoline, natural gas and other petroleum-based fuels that are traded on the NYMEX, ICE Futures or other U.S. and foreign exchanges (collectively, “Oil Futures Contracts”) and to a lesser extent, in order to comply with regulatory requirements, risk mitigation measures (including those that may be taken by USO, USO’s futures commission merchants (“FCMs”), counterparties or other market participants), liquidity requirements, or in view of market conditions, and other oil-related investments such as cash-settled options on Oil Futures Contracts, forward contracts for oil, cleared swap contracts and over-the-counter (“OTC”) transactions that are based on the price of crude oil, diesel-heating oil, gasoline, natural gas and other petroleum-based fuels, Oil Futures Contracts and indices based on the foregoing (collectively, “Other Oil-Related Investments”). As of September 30, 2025, USO held 11,962 Oil Futures Contracts for light, sweet crude oil traded on the NYMEX and did not hold any Oil Futures Contracts for light, sweet crude oil traded on the ICE Futures Europe.

Following the significant market volatility that occurred in the Spring of 2020 and the market conditions, regulatory requirements and risk mitigation measures taken by USO and USO’s FCM that impacted USO as a result thereof, USO disclosed its parameters for making decisions regarding the permitted investments USO would hold, including the intended order of priority in selecting investments and the type of investments to be held in its portfolio. Beginning with the monthly roll in September 2023 and ending with the monthly roll in January 2024, USO transitioned its investment portfolio to primarily invest in the Benchmark Oil Futures Contract, consistent with USO’s investment strategy prior to the Spring of 2020. However, USO has had, and will continue to have, the ability to invest in Oil Futures Contracts beyond the Benchmark Oil Futures Contract and Other Oil-Related Investments, such as OTC swaps, and USO may make such investments if market conditions, (including but not limited to those allowing USO to obtain greater liquidity (i.e., liquidity requirements) or to execute transactions with more favorable pricing), regulatory requirements (including, but not limited to, exchange accountability levels and position limits imposed by NYMEX as well as statutory or regulatory limits), risk mitigation measures (including those that may be taken by USO, USO’s FCMs, counterparties or other market participants), liquidity requirements, or other factors require USO to do so in order to meet its investment objective. USO may invest in Oil Futures Contracts beyond the Benchmark Oil Futures Contract, and/or Other Oil-Related Investments, as a result of, or in response to, any of the foregoing factors. In addition, USO may need to hold significant portions of its portfolio in cash beyond what it has historically held for reasons including (but not limited to) the need to address changes in market conditions, regulatory requirements or risk mitigation measures or the need to satisfy potential margin requirements.

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Investors should be aware that USO’s investment objective is not for its NAV or market price of shares to equal, in dollar terms, the spot price of light, sweet crude oil or any particular futures contract based on light, sweet crude oil, nor is USO’s investment objective for the percentage change in its NAV to reflect the percentage change of the price of any particular futures contract as measured over a time period greater than one day. This is because natural market forces called contango and backwardation have impacted, and may in the future impact, the total return on an investment in USO’s shares relative to a hypothetical direct investment in crude oil and, in the future, it is likely that the relationship between the market price of USO’s shares and changes in the spot prices of light, sweet crude oil will continue to be impacted by contango and backwardation. While USO’s shares may be impacted by contango and backwardation, the potential costs associated with physically owning and storing crude oil, could be substantial. USCF believes that it is not practical to manage the portfolio to achieve the foregoing investment objective when investing in Oil Futures Contracts (as defined below) and Other Oil-Related Investments (as defined below).

USO commenced investment operations on April 10, 2006 and has a fiscal year ending on December 31. USCF is responsible for the management of USO. USCF is a member of the National Futures Association (the “NFA”) and became registered as a commodity pool operator (“CPO”) with the Commodity Futures Trading Commission (the “CFTC”) effective December 1, 2005 and a swaps firm on August 8, 2013.

USCF is also the general partner of the United States Natural Gas Fund, LP (“UNG”), the United States 12 Month Oil Fund, LP (“USL”), the United States Gasoline Fund, LP (“UGA”), the United States 12 Month Natural Gas Fund, LP (“UNL”) and the United States Brent Oil Fund, LP (“BNO”).

USCF is also the sponsor of the United States Commodity Index Funds Trust (“USCIFT”), a Delaware statutory trust and each of its series: the United States Commodity Index Fund (“USCI”) and the United States Copper Index Fund (“CPER”).

UNG, UGA, UNL, USL, BNO, USCI and CPER are referred to collectively herein as the “Related Public Funds.”

USO issues shares to certain authorized purchasers (“Authorized Participants”) by offering baskets consisting of 100,000 shares (“Creation Baskets”) through ALPS Distributors, Inc., as the marketing agent (the “Marketing Agent”). The purchase price for a Creation Basket is based upon the NAV of a share calculated shortly after the close of the core trading session on the NYSE Arca on the day the order to create the basket is properly received.

Authorized Participants pay USO a transaction fee of $1,000 for each order they place to create one or more Creation Baskets or to redeem one or more baskets (“Redemption Baskets”), consisting of 100,000 shares. Shares may be purchased or sold on a nationally recognized securities exchange in smaller increments than a Creation Basket or Redemption Basket. Shares purchased or sold on a nationally recognized securities exchange are not purchased or sold at the per share NAV of USO but rather at market prices quoted on such exchange.

On April 28, 2020, after the close of trading on the NYSE Arca, USO effected a 1-for-8 reverse share split and post-split shares of USO began trading on April 29, 2020. As a result of the reverse share split, every eight pre-split shares of USO were automatically exchanged for one post-split share. Immediately prior to the reverse split, there were 1,482,900,000 shares of USO issued and outstanding, representing a per share NAV of $2.04. Immediately after the effect of the reverse share split, the number of issued and outstanding shares of USO decreased to 185,362,500, not accounting for fractional shares, and the per share NAV increased to $16.35. In connection with the reverse share split, the CUSIP number for USO’s shares changed to 91232N207. USO’s ticker symbol, “USO,” remains the same. The accompanying financial statements have been adjusted to reflect the effect of the reverse share split on a retroactive basis.

In April 2006, USO initially registered 17,000,000 shares on Form S-1 with the U.S. Securities and Exchange Commission (the “SEC”). On April 10, 2006, USO listed its shares on the AMEX under the ticker symbol “USO” and switched to trading on the NYSE Arca under the same ticker symbol on November 25, 2008. On that day, USO established its initial per share NAV by setting the price at $67.39 and issued 200,000 shares in exchange for $13,479,000. USO also commenced investment operations on April 10, 2006, by purchasing Oil Futures Contracts traded on the NYMEX based on light, sweet crude oil. USO has an unlimited number of shares available for issuance. On August 29, 2023, the SEC declared effective a registration statement filed by USO that registered an unlimited number of shares. As a result, USO has an unlimited number of shares that can be issued in the form of Creation Baskets.

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The accompanying unaudited financial statements have been prepared in accordance with Rule 10-01 of Regulation S-X promulgated by the SEC and, therefore, do not include all information and footnote disclosure required under generally accepted accounting principles in the United States of America (“U.S. GAAP”). The financial information included herein is unaudited; however, such financial information reflects all adjustments, consisting only of normal recurring adjustments, which are, in the opinion of USCF, necessary for the fair presentation of the financial statements for the interim period.

​

NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The financial statements have been prepared in conformity with U.S. GAAP as detailed in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification. USO is an investment company for accounting purposes and follows the accounting and reporting guidance in FASB Topic 946.

Revenue Recognition

Commodity futures contracts, swap and forward contracts, physical commodities and related options are recorded on the trade date. All such transactions are recorded on the identified cost basis and marked to market daily. Unrealized gains or losses on open contracts are reflected in the statements of financial condition and represent the difference between the original contract amount and the market value (as determined by exchange settlement prices for futures contracts and related options and cash dealer prices at a predetermined time for swap and forward contracts, physical commodities, and their related options) as of the last business day of the year or as of the last date of the financial statements. Changes in the unrealized gains or losses between periods are reflected in the statements of operations. USO earns income on funds held at the custodian or FCMs at prevailing market rates earned on such investments.

Brokerage Commissions

Brokerage commissions on all open commodity futures contracts are accrued on a full-turn basis.

Income Taxes

USO is not subject to federal income taxes; each partner reports his/her allocable share of income, gain, loss, deductions or credits on his/her own income tax return.

In accordance with U.S. GAAP, USO is required to determine whether a tax position is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any tax related appeals or litigation processes, based on the technical merits of the position. USO files an income tax return in the U.S. federal jurisdiction and may file income tax returns in various U.S. states. USO is not subject to income tax return examinations by major taxing authorities for years before 2019. The tax benefit recognized is measured as the largest amount of benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. De-recognition of a tax benefit previously recognized results in USO recording a tax liability that reduces net assets. However, USO’s conclusions regarding this policy may be subject to review and adjustment at a later date based on factors including, but not limited to, on-going analysis of and changes to tax laws, regulations and interpretations thereof. USO recognizes interest accrued related to unrecognized tax benefits and penalties related to unrecognized tax benefits in income tax fees payable, if assessed. No interest expense or penalties have been recognized as of and for the period ended September 30, 2025.

Creations and Redemptions

Authorized Participants may purchase Creation Baskets or redeem Redemption Baskets only in blocks of 100,000 shares at a price equal to the NAV of the shares calculated shortly after the close of the core trading session on the NYSE Arca on the day the order is placed.

USO receives or pays the proceeds from shares sold or redeemed within two business days after the trade date of the purchase or redemption. The amounts due from Authorized Participants are reflected in USO’s statements of financial condition as receivable for shares sold and amounts payable to Authorized Participants upon redemption are reflected as payable for shares redeemed.

Authorized Participants pay USO a $1,000 transaction fee for each order placed to create one or more Creation Baskets or to redeem one or more Redemption Baskets.

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Partnership Capital and Allocation of Partnership Income and Losses

Profit or loss shall be allocated among the partners of USO in proportion to the weighted-average number of shares each partner holds as of the close of each month. USCF may revise, alter or otherwise modify this method of allocation as described in the LP Agreement.

Calculation of Per Share NAV

USO’s per share NAV is calculated on each NYSE Arca trading day by taking the current market value of its total assets, subtracting any liabilities and dividing that amount by the total number of shares outstanding. USO uses the closing price for the contracts on the relevant exchange on that day to determine the value of contracts held on such exchange.

Net Income (Loss) Per Share

Net income (loss) per share is the difference between the per share NAV at the beginning of each period and at the end of each period. The weighted average number of shares outstanding was computed for purposes of disclosing net income (loss) per weighted average share. The weighted average shares are equal to the number of shares outstanding at the end of the period, adjusted proportionately for shares added and redeemed based on the amount of time the shares were outstanding during such period. There were no shares held by USCF at September 30, 2025.

Offering Costs

Offering costs incurred in connection with the registration of additional shares after the initial registration of shares are borne by USO. These costs include registration fees paid to regulatory agencies and all legal, accounting, printing and other expenses associated with such offerings. These costs are accounted for as a deferred charge and thereafter amortized to expense over twelve months on a straight-line basis or a shorter period if warranted.

Cash Equivalents

Cash equivalents include money market funds and overnight deposits or time deposits with original maturity dates of three months or less.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires USCF to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of the revenue and expenses during the reporting period. Actual results may differ from those estimates and assumptions.

Recently Issued Accounting Pronouncement

USO adopted FASB Accounting Standards Update 2023-07, Segment Reporting (Topic 280) -Improvements to Reportable Segment Disclosures (“ASU 2023-07”). USO operates in one segment. The segment derives its revenues from investments made in accordance with the defined investment strategy of USO, as prescribed in USO’s prospectus. The Chief Operating Decision Maker (“CODM”) is the general partner, USCF. The CODM monitors the operating results of the Fund as part of making decisions for allocating resources and evaluating performance.

​

NOTE 3 — FEES PAID BY THE FUND AND RELATED PARTY TRANSACTIONS

USCF Management Fee

Under the LP Agreement, USCF is responsible for investing the assets of USO in accordance with the objectives and policies of USO. In addition, USCF has arranged for one or more third parties to provide administrative, custody, accounting, transfer agency and other necessary services to USO. For these services, USO is contractually obligated to pay USCF a fee, which is paid monthly, equal to 0.45% per annum of average daily total net assets.

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Ongoing Registration Fees and Other Offering Expenses

USO pays all costs and expenses associated with the ongoing registration of its shares subsequent to the initial offering. These costs include registration or other fees paid to regulatory agencies in connection with the offer and sale of shares, and all legal, accounting, printing and other expenses associated with such offer and sale. For the nine months ended September 30, 2025 and 2024, USO did not incur registration fees and other offering expenses.

Independent Directors’ and Officers’ Expenses

USO is responsible for paying its portion of the directors’ and officers’ liability insurance for USO and the Related Public Funds and the fees and expenses of the independent directors who also serve as audit committee members of USO and the Related Public Funds. USO shares the fees and expenses on a pro rata basis with each Related Public Fund, as described above, based on the relative assets of each Related Public Fund computed on a daily basis. These fees and expenses for the year ending December 31, 2025 are estimated to be a total of $400,000 for USO and, in the aggregate for USO and the Related Public Funds, $883,000.

Licensing Fees

As discussed in Note 4 below, USO entered into a licensing agreement with the NYMEX on April 10, 2006, as amended on October 20, 2011. Pursuant to the agreement, USO and the Related Public Funds, other than BNO, USCI and CPER, pay a licensing fee that is equal to 0.015% on all net assets. During the nine months ended September 30, 2025 and 2024, USO incurred $111,703 and $150,201, respectively under this arrangement.

Investor Tax Reporting Cost

The fees and expenses associated with USO’s audit expenses and tax accounting and reporting requirements are paid by USO. These costs are estimated to be $2,100,000 for the year ending December 31, 2025. Tax reporting costs fluctuate between years due to the number of shareholders during any given year.

Other Expenses and Fees

In addition to the fees described above, USO pays all brokerage fees and other expenses in connection with the operation of USO, excluding costs and expenses paid by USCF as outlined in Note 4 – Contracts and Agreements below.

​

NOTE 4 — CONTRACTS AND AGREEMENTS

Marketing Agent Agreement

USO is party to a marketing agent agreement, dated as of March 13, 2006, as amended from time to time, with the Marketing Agent and USCF, whereby the Marketing Agent provides certain marketing services for USO as outlined in the agreement. The agreement with the Marketing Agent was amended and, commencing October 1, 2022, the fee of the Marketing Agent, which is calculated daily and payable monthly by USCF, is equal to 0.025% of USO’s total net assets. In no event may the aggregate compensation paid to the Marketing Agent and any affiliate of USCF for distribution-related services exceed 10% of the gross proceeds of USO’s offering.

The above fee does not include website construction and development, which are also borne by USCF.

Custody, Transfer Agency and Fund Administration and Accounting Services Agreements

USCF engaged The Bank of New York Mellon, a New York corporation authorized to conduct a banking business (“BNY Mellon”), to provide USO and each of the Related Public Funds with certain custodial, administrative and accounting, and transfer agency services, pursuant to the following agreements with BNY Mellon dated as of March 20, 2020 (together, the “BNY Mellon Agreements”), which were effective as of April 1, 2020: (i) a Custody Agreement; (ii) a Fund Administration and Accounting Agreement; and (iii) a Transfer Agency and Service Agreement. USCF pays the fees of BNY Mellon for its services under the BNY Mellon Agreements and such fees are determined by the parties from time to time.

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Brokerage and Futures Commission Merchant Agreements

USO entered into a brokerage agreement with RBC Capital Markets LLC (“RBC”) to serve as USO’s FCM effective October 10, 2013. USO has engaged each of Marex North America, LLC, formerly RCG Division of Marex Spectron (“MNA”), Marex Capital Markets, Inc., formerly E D & F Man Capital Markets Inc. (“MCM”), Macquarie Futures USA LLC (“MFUSA”), and ADM Investor Services, Inc. (“ADMIS”) to serve as additional FCMs to USO effective on May 28, 2020, June 5, 2020, December 3, 2020, and August 8, 2023, respectively. The agreements with USO’s FCMs require the FCMs to provide services to USO in connection with the purchase and sale of Oil Futures Contracts and Other Oil-Related Investments that may be purchased and sold by or through the applicable FCM for USO’s account. In accordance with the FCM agreements, USO pays each FCM commissions of approximately $7 to $8 per round-turn trade, including applicable exchange, clearing and NFA fees for Oil Futures Contracts and options on Oil Futures Contracts. Such fees include those incurred when purchasing Oil Futures Contracts and options on Oil Futures Contracts when USO issues shares as a result of a Creation Basket, as well as fees incurred when selling Oil Futures Contracts and options on Oil Futures Contracts when USO redeems shares as a result of a Redemption Basket. Such fees are also incurred when Oil Futures Contracts and options on Oil Futures Contracts are purchased or redeemed for the purpose of rebalancing the portfolio. USO also incurs commissions to brokers for the purchase and sale of Oil Futures Contracts, Other Oil-Related Investments or short-term obligations of the United States of two years or less (“Treasuries”).

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Nine months ended | ​ | Nine months ended |
​ |  | September 30, 2025 |  | September 30, 2024 | ​
Total commissions accrued to brokers | ​ | $ | 1,133,961 | ​ | $ | 1,110,080 | ​
Total commissions as annualized percentage of average total net assets | ​ |  | 0.15 | % |  | 0.11 | %

​

The increase in total commissions accrued to brokers for the nine months ended September 30, 2025, compared to the nine months ended September 30, 2024, was due primarily to a higher number of crude oil futures contracts being held and traded.

​

For the nine months ended September 30, 2025, and 2024, the monthly average volume of open future contract notional value was $763,667,431,and $1,046,433,502, respectively.

Swap Dealer Agreements

USO entered into ISDA 2002 Master Agreements with (1) Macquarie Bank Limited on November 30, 2021 (the “Macquarie ISDA”), (2) Société Générale on June 13, 2022 (the “Société Générale ISDA”), and (3) The Bank of Nova Scotia on August 5, 2024 (the “ScotiaBank ISDA”), pursuant to which each of Macquarie Bank Limited, Société Générale and The Bank of Nova Scotia has agreed to serve as an over-the-counter (“OTC”) swap counterparty for USO. The Macquarie ISDA, the Société Générale ISDA and the ScotiaBank ISDA (together, the “ISDA Agreements”), each provide USO with the ability to invest in OTC swaps in furtherance of USO’s investment objective by providing it with investment flexibility in light of market conditions, liquidity, regulatory requirements, and risk diversification. USO may enter into OTC swap transactions under each of the ISDA Agreements in light of the foregoing. Any OTC swap transactions of USO that are outstanding under any ISDA Agreement, along with USO’s other holdings, are posted on USO’s webpage, www.uscfinvestments.com. In accordance with each of the swap agreements described above, USO pays each swap dealer a flat fee in a range between 0.20% and 0.30% on the daily notional value of each OTC swap transaction.

NYMEX Licensing Agreement

USO and the NYMEX entered into a licensing agreement on April 10, 2006, as amended on October 20, 2011, whereby USO was granted a non-exclusive license to use certain of the NYMEX’s settlement prices and service marks. Under the licensing agreement, USO and the Related Public Funds, other than BNO, USCI, and CPER, pay the NYMEX an asset-based fee for the license, the terms of which are described in Note 3. USO expressly disclaims any association with the NYMEX or endorsement of USO by the NYMEX and acknowledges that “NYMEX” and “New York Mercantile Exchange” are registered trademarks of the NYMEX.

​

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NOTE 5 — FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES

USO may engage in the trading of futures contracts, options on futures contracts, cleared swaps and OTC swaps (collectively, “derivatives”). USO is exposed to both market risk, which is the risk arising from changes in the market value of the contracts, and credit risk, which is the risk of failure by another party to perform according to the terms of a contract.

USO may enter into futures contracts, options on futures contracts, cleared swaps, and OTC swaps to gain exposure to changes in the value of an underlying commodity. A futures contract obligates the seller to deliver (and the purchaser to accept) the future delivery of a specified quantity and type of a commodity at a specified time and place. Some futures contracts may call for physical delivery of the asset, while others are settled in cash. The contractual obligations of a buyer or seller may generally be satisfied by taking or making physical delivery of the underlying commodity or by making an offsetting sale or purchase of an identical futures contract on the same or linked exchange before the designated date of delivery. Cleared swaps are agreements that are eligible to be cleared by a clearinghouse, e.g., ICE Clear Europe, and provide the efficiencies and benefits that centralized clearing on an exchange offers to traders of futures contracts, including credit risk intermediation and the ability to offset positions initiated with different counterparties. OTC swaps are entered into between two parties in private contracts. In an OTC swap, each party bears credit risk to the other party, i.e., the risk that the other party may not be able to perform its obligations under the OTC swap.

The purchase and sale of futures contracts, options on futures contracts and cleared swaps require margin deposits with an FCM. Additional deposits may be necessary for any loss on contract value. The Commodity Exchange Act requires FCMs to segregate all customer transactions and assets from the FCM’s proprietary transactions and assets. To reduce the credit risk that arises in connection with OTC swaps, USO will generally enter into an agreement with each counterparty based on the Master Agreement published by the International Swaps and Derivatives Association, Inc., (“ISDA”) that provides for the netting of its overall exposure to its counterparty and, consistent with applicable regulatory requirements, the posting by each party to cover the mark-to-market exposure of a counterparty to the other counterparty is required.

Futures contracts, options on futures contracts and cleared swaps involve, to varying degrees, elements of market risk (specifically commodity price risk) and exposure to loss in excess of the amount of variation margin. The face or contract amounts reflect the extent of the total exposure USO has in the particular classes of instruments. Additional risks associated with the use of futures contracts are an imperfect correlation between movements in the price of the futures contracts and the market value of the underlying securities and the possibility of an illiquid market for a futures contract. Buying and selling options on futures contracts exposes investors to the risks of purchasing or selling futures contracts.

As to OTC swaps, valuing OTC derivatives is less certain than valuing actively traded financial instruments such as exchange-traded futures contracts and securities or cleared swaps because, for OTC derivatives, the price and terms on which such OTC derivatives are entered into or can be terminated are individually negotiated, and those prices and terms may not reflect the best price or terms available from other sources. In addition, while market makers and dealers generally quote indicative prices or terms for entering into or terminating OTC contracts, they typically are not contractually obligated to do so, particularly if they are not a party to the transaction. As a result, it may be difficult to obtain an independent value for an outstanding OTC derivatives transaction.

Market volatility is attributable to things like the COVID-19 pandemic and related supply chain disruptions, war (such as the Russia-Ukraine war), continuing disputes among oil-producing countries, the introduction of or changes in tariffs or trade barriers, and trade wars between nations. Events such as these, and others, could cause volatility in the future, which may affect the value, pricing and liquidity of some investments or other assets, including those held by or invested in by USO and the impact of which could limit USO’s ability to have a substantial portion of its assets invested in the Futures Contracts and/or Other Oil-Related Investments, such as OTC swaps.

All of the futures contracts held by USO through September 30, 2025, were exchange-traded. The risks associated with exchange-traded contracts are generally perceived to be less than those associated with OTC swaps since, in OTC swaps, a party must rely solely on the credit of its respective individual counterparties. USO entered OTC swaps during the period ended March 31, 2022. These OTC swaps are subject to the credit risk associated with counterparty non-performance. The credit risk from counterparty non-performance associated with such instruments is the net unrealized gain, if any, on the transaction. USO also has credit risk to the sole counterparty to all domestic and foreign futures contracts, the clearinghouse for the exchange on which the relevant contracts are traded. In addition, USO bears the risk of financial failure by the clearing broker.

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USO’s cash and other property, such as Treasuries, deposited with its FCMs are considered commingled with all other customer funds, subject to such FCM’s segregation requirements. In the event of an FCM’s insolvency, recovery may be limited to a pro rata share of segregated funds available. It is possible that the recovered amount could be less than the total of cash and other property deposited. The insolvency of an FCM could result in the complete loss of USO’s assets posted with that FCM; however, the majority of USO’s assets are held in investments in Treasuries, cash and/or cash equivalents with USO’s custodian and would not be impacted by the insolvency of an FCM. The failure or insolvency of USO’s custodian, however, could result in a substantial loss of USO’s assets.

USCF invests a portion of USO’s cash in money market funds that seek to maintain a stable per share NAV. USO is exposed to any risk of loss associated with an investment in such money market funds. As of September 30, 2025 and December 31, 2024, USO held investments in money market funds in the amounts of $675,000,000 and $727,450,000, respectively. USO also holds cash deposits with its custodian and FCMs. As of September 30, 2025 and December 31, 2024, USO held cash deposits in the amounts of $226,511,887 and $280,259,886 respectively, with the custodian and FCMs. Some or all of these amounts may be subject to loss should USO’s custodian and/or FCMs cease operations.

For derivatives, risks arise from changes in the market value of the contracts. Theoretically, USO is exposed to market risk equal to the value of futures contracts purchased and unlimited liability on such contracts sold short or that the value of the futures contract could fall below zero. As both a buyer and a seller of options, USO pays or receives a premium at the outset and then bears the risk of unfavorable changes in the price of the contract underlying the option.

USO’s policy is to continuously monitor its exposure to market and counterparty risk through the use of a variety of financial, position and credit exposure reporting controls and procedures. In addition, USO has a policy of requiring review of the credit standing of each broker or counterparty with which it conducts business.

The financial instruments held by USO are reported in its statements of financial condition at market or fair value, or at carrying amounts that approximate fair value, because of their highly liquid nature and short-term maturity.

For the nine months ended September 30, 2025 and 2024, the monthly average volume of open future contract notional value was $763,667,431 and $1,046,433,502, respectively. For the nine months ended September 30, 2025 and 2024, the monthly average volume of swap contract notional value was $236,227,097 and $296,548,412, respectively.

Settlement of SEC and CFTC Investigations

On November 8, 2021, USCF and USO announced a resolution with each of the SEC and the CFTC relating to matters set forth in certain Wells Notices issued by the staffs of each of the SEC and CFTC as more fully described below.

On August 17, 2020, USCF, USO, and John Love received a “Wells Notice” from the staff of the SEC (the “SEC Wells Notice”). The SEC Wells Notice stated that the SEC staff made a preliminary determination to recommend that the SEC file an enforcement action against USCF, USO, and Mr. Love alleging violations of Sections 17(a)(1) and 17(a)(3) of the Securities Act of 1933, as amended (the “1933 Act”), and Section 10(b) of the 1934 Act, and Rule 10b-5 thereunder.

Subsequently, on August 19, 2020, USCF, USO, and Mr. Love received a Wells Notice from the staff of the CFTC (the “CFTC Wells Notice”). The CFTC Wells Notice stated that the CFTC staff made a preliminary determination to recommend that the CFTC file an enforcement action against USCF, USO, and Mr. Love alleging violations of Sections 4o(1)(A) and (B) and 6(c)(1) of the Commodity Exchange Act of 1936, as amended (the “CEA”), 7 U.S.C. §§ 6o(1)(A) and (B) and 9(1) (2018), and CFTC Regulations 4.26, 4.41, and 180.1(a), 17 C.F.R. §§ 4.26, 4.41, 180.1(a) (2019).

On November 8, 2021, acting pursuant to an offer of settlement submitted by USCF and USO, the SEC issued an order instituting cease-and-desist proceedings, making findings, and imposing a cease-and-desist order pursuant to Section 8A of the 1933 Act, directing USCF and USO to cease and desist from committing or causing any violations of Section 17(a)(3) of the 1933 Act, 15 U.S.C. § 77q(a)(3) (the “SEC Order”). In the SEC Order, the SEC made findings that, from April 24, 2020 to May 21, 2020, USCF and USO violated Section 17(a)(3) of 1933 Act, which provides that it is “unlawful for any person in the offer or sale of any securities to engage in any transaction, practice, or course of business which operates or would operate as a fraud or deceit upon the purchaser.” USCF and USO consented to entry of the SEC Order without admitting or denying the findings contained therein, except as to jurisdiction.

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Separately, on November 8, 2021, acting pursuant to an offer of settlement submitted by USCF, the CFTC issued an order instituting cease-and-desist proceedings, making findings, and imposing a cease-and-desist order pursuant to Section 6(c) and (d) of the CEA, directing USCF to cease and desist from committing or causing any violations of Section 4o(1)(B) of the CEA, 7 U.S.C. § 6o(1) (B), and CFTC Regulation 4.41(a)(2), 17 C.F.R. § 4.41(a)(2) (the “CFTC Order”). In the CFTC Order, the CFTC made findings that, from on or about April 22, 2020 to June 12, 2020, USCF violated Section 4o(1)(B) of the CEA and CFTC Regulation 4.41(a)(2), which make it unlawful for any commodity pool operator (“CPO”) to engage in “any transaction, practice, or course of business which operates as a fraud or deceit upon any client or participant or prospective client or participant” and prohibit a CPO from advertising in a manner which “operates as a fraud or deceit upon any client or participant or prospective client or participant,” respectively. USCF consented to entry of the CFTC Order without admitting or denying the findings contained therein, except as to jurisdiction.

Pursuant to the SEC Order and the CFTC Order, in addition to the command to cease and desist from committing or causing any violations of Section 17(a)(3) of the 1933 Act, Section 4o(1)(B) of the CEA, and CFTC Regulation 4.14(a)(2), civil monetary penalties totaling two million five hundred thousand dollars ($2,500,000) in the aggregate were required to be paid to the SEC and CFTC, of which one million two hundred fifty thousand dollars ($1,250,000) was paid by USCF to each of the SEC and the CFTC, respectively, pursuant to the offsets permitted under the orders.

In re: United States Oil Fund, LP Securities Litigation

On June 19, 2020, USCF, USO, John P. Love, and Stuart P. Crumbaugh were named as defendants in a putative class action filed by purported shareholder Robert Lucas (the “Lucas Class Action”). The Court thereafter consolidated the Lucas Class Action with two related putative class actions filed on July 31, 2020 and August 13, 2020, and appointed a lead plaintiff. The consolidated class action is pending in the U.S. District Court for the Southern District of New York under the caption In re: United States Oil Fund, LP Securities Litigation, Civil Action No. 1:20-cv-04740.

On November 30, 2020, the lead plaintiff filed an amended complaint (the “Amended Lucas Class Complaint”). The Amended Lucas Class Complaint asserts claims under the 1933 Act, the Exchange Act, and Rule 10b-5. The Amended Lucas Class Complaint challenges statements in registration statements that became effective on February 25, 2020 and March 23, 2020 as well as subsequent public statements through April 2020 concerning certain extraordinary market conditions and the attendant risks that caused the demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The Amended Lucas Class Complaint purports to have been brought by an investor in USO on behalf of a class of similarly-situated shareholders who purchased USO securities between February 25, 2020 and April 28, 2020 and pursuant to the challenged registration statements. The Amended Lucas Class Complaint seeks to certify a class and to award the class compensatory damages at an amount to be determined at trial as well as costs and attorney’s fees. The Amended Lucas Class Complaint named as defendants USCF, USO, John P. Love, Stuart P. Crumbaugh, Nicholas D. Gerber, Andrew F Ngim, Robert L. Nguyen, Peter M. Robinson, Gordon L. Ellis, and Malcolm R. Fobes III, as well as the marketing agent, ALPS Distributors, Inc., and the Authorized Participants: ABN Amro, BNP Paribas Securities Corporation, Citadel Securities LLC, Citigroup Global Markets, Inc., Credit Suisse Securities USA LLC, Deutsche Bank Securities Inc., Goldman Sachs & Company, J.P. Morgan Securities Inc., Merrill Lynch Professional Clearing Corporation, Morgan Stanley & Company Inc., Nomura Securities International Inc., RBC Capital Markets LLC, SG Americas Securities LLC, UBS Securities LLC, and Virtu Financial BD LLC.

The lead plaintiff filed a notice of voluntary dismissal of its claims against BNP Paribas Securities Corporation, Citadel Securities LLC, Citigroup Global Markets Inc., Credit Suisse Securities USA LLC, Deutsche Bank Securities Inc., Morgan Stanley & Company, Inc., Nomura Securities International, Inc., RBC Capital Markets, LLC, SG Americas Securities LLC, and UBS Securities LLC.

The remaining defendants in In re: United States Oil Fund, LP Securities Litigation filed a motion to dismiss the claims in January 2021. On September 29, 2025, the Court granted the defendants’ motion to dismiss the class action complaint in its entirety without prejudice and granting plaintiff leave to move to amend the complaint by November 26, 2025. USCF, USO, and the individual defendants intend to continue vigorously contesting any such claims.

Wang Class Action

On July 10, 2020, purported shareholder Momo Wang filed a putative class action complaint, individually and on behalf of others similarly situated, against defendants USO, USCF, John P. Love, Stuart P. Crumbaugh, Nicholas D. Gerber, Andrew F Ngim, Robert L. Nguyen, Peter M. Robinson, Gordon L. Ellis, Malcolm R. Fobes, III, ABN Amro, BNP Paribas Securities Corp., Citadel Securities LLC, Citigroup Global Markets Inc., Credit Suisse Securities USA LLC, Deutsche Bank Securities Inc., Goldman Sachs & Company,

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JP Morgan Securities Inc., Merrill Lynch Professional Clearing Corp., Morgan Stanley & Company Inc., Nomura Securities International Inc., RBC Capital Markets LLC, SG Americas Securities LLC, UBS Securities LLC, and Virtu Financial BD LLC, in the U.S. District Court for the Northern District of California as Civil Action No. 3:20-cv-4596 (the “Wang Class Action”).

The Wang Class Action asserted federal securities claims under the 1933 Act, challenging disclosures in a March 19, 2020 registration statement. It alleged that the defendants failed to disclose to investors in USO certain extraordinary market conditions and the attendant risks that caused the demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The Wang Class Action was voluntarily dismissed on August 4, 2020.

Mehan Action

On August 10, 2020, purported shareholder Darshan Mehan filed a derivative action on behalf of nominal defendant USO, against defendants USCF, John P. Love, Stuart P. Crumbaugh, Nicholas D. Gerber, Andrew F Ngim, Robert L. Nguyen, Peter M. Robinson, Gordon L. Ellis, and Malcolm R. Fobes, III (the “Mehan Action”). The action is pending in the Superior Court of the State of California for the County of Alameda as Case No. RG20070732.

The Mehan Action alleges that the defendants breached their fiduciary duties to USO and failed to act in good faith in connection with a March 19, 2020 registration statement and offering and disclosures regarding certain extraordinary market conditions that caused demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The complaint seeks, on behalf of USO, compensatory damages, restitution, equitable relief, attorney’s fees, and costs. All proceedings in the Mehan Action are stayed pending final disposition of the motion(s) to dismiss in In re: United States Oil Fund, LP Securities Litigation.

USCF, USO, and the other defendants intend to vigorously contest such claims.

In re United States Oil Fund, LP Derivative Litigation

On August 27, 2020, purported shareholders Michael Cantrell and AML Pharm. Inc. DBA Golden International filed two separate derivative actions on behalf of nominal defendant USO, against defendants USCF, John P. Love, Stuart P. Crumbaugh, Andrew F Ngim, Gordon L. Ellis, Malcolm R. Fobes, III, Nicholas D. Gerber, Robert L. Nguyen, and Peter M. Robinson in the U.S. District Court for the Southern District of New York at Civil Action No. 1:20-cv-06974 (the “Cantrell Action”) and Civil Action No. 1:20-cv-06981 (the “AML Action”), respectively.

The complaints in the Cantrell and AML Actions are nearly identical. They each allege violations of Sections 10(b), 20(a), and 21D of the Exchange Act, Rule 10b-5 thereunder, and common law claims of breach of fiduciary duties, unjust enrichment, abuse of control, gross mismanagement, and waste of corporate assets. These allegations stem from USO’s disclosures and defendants’ alleged actions in light of the extraordinary market conditions in 2020 that caused demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The complaints seek, on behalf of USO, compensatory damages, restitution, equitable relief, attorney’s fees, and costs. The plaintiffs in the Cantrell and AML Actions have marked their actions as related to the Lucas Class Action.

The Court consolidated the Cantrell and AML Actions under the caption In re United States Oil Fund, LP Derivative Litigation, Civil Action No. 1:20-cv-06974 and appointed co-lead counsel. All proceedings in In re United States Oil Fund, LP Derivative Litigation are stayed pending final disposition of the motion(s) to dismiss in In re: United States Oil Fund, LP Securities Litigation.

USCF, USO, and the other defendants intend to vigorously contest the claims in In re United States Oil Fund, LP Derivative Litigation.

Optimum Strategies Action

On April 6, 2022, USO and USCF were named as defendants in an action filed by Optimum Strategies Fund I, LP, a purported investor in call option contracts on USO (the “Optimum Strategies Action”). The action was in the U.S. District Court for the District of Connecticut at Civil Action No. 3:22-cv-00511.

The Optimum Strategies Action asserted claims under the Securities Exchange Act of 1934, as amended (the “1934 Act”), Rule 10b-5 thereunder, and the Connecticut Uniform Securities Act (“CUSA”). It purported to challenge statements in registration statements that became effective in February 2020, March 2020, and on April 20, 2020, as well as public statements between February 2020 and May

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2020, in connection with certain extraordinary market conditions and the attendant risks that caused the demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The complaint was seeking damages, interest, costs, attorney’s fees, and equitable relief.

On March 15, 2023, the court granted the USO defendants’ motion to dismiss the complaint. In its ruling, the court granted the USO defendants’ motion to dismiss, with prejudice, the plaintiff’s claims under Section 10(b) of the Exchange Act and Rule 10b-5 thereunder, and a claim for control person liability under Section 20(a) of the Exchange Act. Having dismissed all claims over which the court had original jurisdiction, the court declined to exercise supplemental jurisdiction over the plaintiff’s state law claim under CUSA and dismissed the claim without prejudice. No notice of appeal was filed.

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NOTE 6 — FINANCIAL HIGHLIGHTS

The following table presents per share performance data and other supplemental financial data for the three and nine months ended September 30, 2025 and 2024 for the shareholders. This information has been derived from information presented in the financial statements.

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three months ended |  | Three months ended |  | Nine months ended |  | Nine months ended |
​ | ​ | September 30, 2025 | ​ | September 30, 2024 | ​ | September 30, 2025 | ​ | September 30, 2024 | ​
​ | ​ | (Unaudited) | ​ | (Unaudited) | ​ | (Unaudited) | ​ | (Unaudited) | ​
Per Share Operating Performance: |  | ​ |  |  | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ |
Net asset value, beginning of period | ​ | $ | 73.25 | ​ | $ | 79.63 | ​ | $ | 75.45 | ​ | $ | 66.91 | ​
Total income (loss) | ​ |  | 0.49 | ​ |  | (9.61) | ​ | ​ | (1.40) | ​ | ​ | 3.41 | ​
Total expenses | ​ |  | (0.16) | ​ |  | (0.16) | ​ | ​ | (0.47) | ​ | ​ | (0.46) | ​
Net increase (decrease) in net asset value | ​ |  | 0.33 | ​ |  | (9.77) | ​ | ​ | (1.87) | ​ | ​ | 2.95 | ​
Net asset value, end of period | ​ | $ | 73.58 | ​ | $ | 69.86 | ​ | $ | 73.58 | ​ | $ | 69.86 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Return | ​ |  | 0.45 | % |  | (12.27) | % | ​ | (2.48) | % | ​ | 4.41 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ratios to Average Net Assets | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total income (loss) | ​ |  | 2.61 | % |  | (10.48) | % | ​ | (0.29) | % | ​ | 9.94 | %
Management fees# | ​ |  | 0.45 | % |  | 0.45 | % | ​ | 0.45 | % | ​ | 0.45 | %
Total expenses excluding management fees# | ​ |  | 0.40 | % |  | 0.39 | % | ​ | 0.40 | % | ​ | 0.37 | %
Net income (loss) | ​ |  | 2.40 | % |  | (10.69) | % | ​ | (0.92) | % | ​ | 9.32 | %

# | Annualized.

Total returns are calculated based on the change in value during the period. An individual shareholder’s total return and ratio may vary from the above total returns and ratios based on the timing of contributions to and withdrawals from USO. Additionally, only Authorized Participants purchase and redeem shares from the Fund at the NAV per share. Most shareholders will purchase and sell shares in the secondary market at market prices, which may differ from the NAV per share and result in a higher or lower total return.

NOTE 7 — FAIR VALUE OF FINANCIAL INSTRUMENTS

USO values its investments in accordance with Accounting Standards Codification 820 – Fair Value Measurements and Disclosures (“ASC 820”). ASC 820 defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurement. ASC 820 establishes a fair value hierarchy that distinguishes between: (1) market participant assumptions developed based on market data obtained from sources independent of USO (observable inputs) and (2) USO’s own assumptions about market participant assumptions developed based on the best information available under the circumstances (unobservable inputs). The three levels defined by the ASC 820 hierarchy are as follows:

Level I – Quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

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Level II – Inputs other than quoted prices included within Level I that are observable for the asset or liability, either directly or indirectly. Level II assets include the following: quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability, and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market-corroborated inputs).

Level III – Unobservable pricing input at the measurement date for the asset or liability. Unobservable inputs shall be used to measure fair value to the extent that observable inputs are not available.

In some instances, the inputs used to measure fair value might fall within different levels of the fair value hierarchy. The level in the fair value hierarchy within which the fair value measurement in its entirety falls shall be determined based on the lowest input level that is significant to the fair value measurement in its entirety.

The following table summarizes the valuation of USO’s securities at September 30, 2025 using the fair value hierarchy:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
At September 30, 2025 |  | Total |  | Level I |  | Level II |  | Level III
Short-Term Investments | ​ | $ | 675,000,000 | ​ | $ | 675,000,000 | ​ | $ | — | ​ | $ | —
Exchange-Traded Futures Contracts | ​ |  | ​ | ​ |  | ​ | ​ |  |  | ​ |  |
United States Contracts | ​ |  | (2,068,190) | ​ |  | (2,068,190) | ​ |  | — | ​ |  | —
OTC Commodity Swap Contracts | ​ |  | 91,039 | ​ |  | — | ​ |  | 91,039 | ​ |  | —

​

The following table summarizes the valuation of USO’s securities at December 31, 2024 using the fair value hierarchy:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
At December 31, 2024 |  | Total |  | Level I |  | Level II |  | Level III
Short-Term Investments | ​ | $ | 727,450,000 | ​ | $ | 727,450,000 | ​ | $ | — | ​ | $ | —
Exchange-Traded Futures Contracts | ​ |  | ​ | ​ |  | ​ | ​ |  |  | ​ |  |
United States Contracts | ​ |  | 28,431,020 | ​ |  | 28,431,020 | ​ |  | — | ​ |  | —
OTC Commodity Swap Contracts | ​ | ​ | (2,068) | ​ | ​ | — | ​ | ​ | (2,068) | ​ | ​ | —

​

Effective January 1, 2009, USO adopted the provisions of Accounting Standards Codification 815 — Derivatives and Hedging, which require presentation of qualitative disclosures about objectives and strategies for using derivatives, quantitative disclosures about fair value amounts and gains and losses on derivatives.

​

Fair Value of Derivative Instruments

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Fair Value at | ​ | Fair Value at
Derivatives not Accounted for as Hedging Instruments |  | Statements of Financial Condition Location |  | September 30, 2025 |  | December 31, 2024
Futures - Commodity Contracts |  | Unrealized gain (loss) on open commodity future contracts | ​ | $ | (2,068,190) | ​ | $ | 28,431,020
Swap - Commodity Contracts | ​ | Unrealized gain (loss) on open OTC commodity swap contracts | ​ | $ | 91,039 | ​ | $ | (2,068)

​

The volume of open OTC swap positions relative to the net assets of USO at the date of this report is generally representative of open positions throughout the reporting period.

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The Effect of Derivative Instruments on the Statements of Operations

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | For the nine months ended | ​ | For the nine months ended
​ | ​ | ​ | ​ | September 30, 2025 | ​ | September 30, 2024
​ | ​ | ​ | ​ | ​ | ​ | Change in | ​ | ​ | ​ | Change in
​ | ​ | Location of Gain | ​ | Realized Gain | ​ | Unrealized Gain | ​ | Realized Gain | ​ | Unrealized Gain
Derivatives not | ​ | (Loss) on | ​ | (Loss) on | ​ | (Loss) on | ​ | (Loss) in | ​ | (Loss) on
Accounted for as | ​ | Derivatives | ​ | Derivatives | ​ | Derivatives | ​ | Derivatives | ​ | Derivatives
Hedging | ​ | Recognized in | ​ | Recognized in | ​ | Recognized in | ​ | Recognized in | ​ | Recognized in
Instruments |  | Income |  | Income |  | Income |  | Income |  | Income
Futures - Commodity Contracts |  | Realized gain (loss) on closed commodity futures contracts | ​ | $ | 5,568,220 | ​ | ​ | — | ​ | $ | 75,755,922 | ​ | ​ | —
​ |  |  | ​ |  |  |  | ​ |  | ​ |  |  |  | ​ |
​ |  | Change in unrealized gain (loss) on open commodity futures contracts | ​ |  | — | ​ | $ | (30,499,210) | ​ |  | — | ​ | $ | 4,993,638
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
OTC Swap - Commodity Contracts | ​ | Realized gain (loss) on closed OTC commodity swap contracts | ​ | $ | (8,128,147) | ​ | ​ | — | ​ | $ | 3,001,359 | ​ | ​ | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Change in unrealized gain (loss) on open OTC commodity swap contracts. | ​ | ​ | — | ​ | $ | 93,107 | ​ | ​ | — | ​ | $ | (25)

​

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NOTE 8 — SUBSEQUENT EVENTS

USO has performed an evaluation of subsequent events through the date the financial statements were issued. This evaluation did not result in any subsequent events that necessitated disclosures and/or adjustments.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion should be read in conjunction with the financial statements and the notes thereto of the United States Oil Fund, LP (“USO”) included elsewhere in this quarterly report on Form 10-Q.

Forward-Looking Information

This quarterly report on Form 10-Q, including this “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” contains “forward-looking statements” which generally relate to future events or future performance. In some cases, you can identify forward-looking statements by terminology such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential” or the negative of these terms or other comparable terminology. All statements (other than statements of historical fact) included in this quarterly report on Form 10-Q that address activities, events or developments that will or may occur in the future, including such matters as changes in inflation in the United States, movements in the stock market, movements in U.S. and foreign currencies, and market volatility in the commodities markets and futures markets and indexes that track such movements, the Russia-Ukraine war and conflicts in the Middle East, USO’s operations, USCF’s plans and references to USO’s future success and other similar matters, are forward-looking statements. These statements are only predictions. Actual events or results may differ materially. These statements are based upon certain assumptions and analyses USCF has made based on its perception of historical trends, current conditions and expected future developments, as well as other factors appropriate in the circumstances. Whether or not actual results and developments will conform to USCF’s expectations and predictions, however, is subject to a number of risks and uncertainties, including the special considerations discussed in this quarterly report on Form 10-Q, general economic, market and business conditions, changes in laws or regulations, including those concerning taxes, made by governmental authorities or regulatory bodies, and other world economic and political developments. Consequently, all the forward-looking statements made in this quarterly report on Form 10-Q are qualified by these cautionary statements, and there can be no assurance that the actual results or developments USCF anticipates will be realized or, even if substantially realized, that they will result in the expected consequences to, or have the expected effects on, USO’s operations or the value of its shares.

USO has based the forward-looking statements included in this quarterly report on Form 10-Q on information available to it on the date of this quarterly report on Form 10-Q, and USO assumes no obligation to update any such forward-looking statements. Although USO undertakes no obligation to revise or update any forward-looking statements, whether as a result of new information, future events or otherwise, investors are advised to consult any additional disclosures that USO may make directly to them or through reports that USO files in the future with the SEC, including annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K.

Introduction

USO, a Delaware limited partnership, is a commodity pool that issues shares that may be purchased and sold on the NYSE Arca. The investment objective of USO is for the daily changes in percentage terms of its shares’ per share NAV to reflect the daily changes in percentage terms of the spot price of light, sweet crude oil delivered to Cushing, Oklahoma, as measured by the daily changes in the price of the futures contract for light, sweet crude oil traded on the NYMEX that is the near month contract to expire and changes, over a ten-day period, into the NYMEX futures contract that is the next month to expire (the “Benchmark Oil Futures Contract”), plus interest earned on USO’s collateral holdings, less USO’s expenses. The change from the near month contract to the next month contract occurs at the beginning of each month and will be approximately proportional, relative to total net assets, over each day of the ten-day roll period. “Near month contract” means the next contract traded on the NYMEX due to expire. “Next month contract” means the first contract traded on the NYMEX due to expire after the near month contract. USO seeks to achieve its investment objective by investing so that the average daily percentage change in USO’s NAV for any period of 30 successive valuation days will be within plus/minus ten percent (10%) of the average daily percentage change in the price of the Benchmark Oil Futures Contract over the same period. As a result, investors should be aware that USO would meet its investment objective even if there are significant deviations between changes in its daily NAV and changes in the daily price of the Benchmark Oil Futures Contract provided that the average daily percentage change in USO’s NAV over 30 successive valuation days is within plus/minus ten percent (10%) of the average daily percentage change in the price of the Benchmark Oil Futures Contract over the same period.

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USO invests primarily in futures contracts for light, sweet crude oil, other types of crude oil, heating oil, gasoline, natural gas and other petroleum-based fuels that are traded on the NYMEX, ICE Futures or other U.S. and foreign exchanges (collectively, “Oil Futures Contracts”) and to a lesser extent, in order to comply with regulatory requirements, risk mitigation measures (including those that may be taken by USO, USO’s FCMs, counterparties or other market participants), liquidity requirements, or in view of market conditions, other oil-related investments such as cash-settled options on Oil Futures Contracts, forward contracts for oil, cleared swap contracts and OTC swaps that are based on the price of oil, other petroleum-based fuels, Oil Futures Contracts and indices based on the foregoing (collectively, “Other Oil-Related Investments”). For convenience and unless otherwise specified, Oil Futures Contracts and Other Oil-Related Investments collectively are referred to as “Oil Interests” in this quarterly report on Form 10-Q.

USO’s investment objective is not for its NAV or market price of shares to equal, in dollar terms, the spot price of light, sweet crude oil or any particular futures contract based on light, sweet crude oil, nor is USO’s investment objective for the percentage change in its NAV to reflect the percentage change of the price of any particular futures contract as measured over a time period greater than one day. The general partner of USO, United States Commodity Funds, LLC (“USCF”), believes that it is not practical to manage the portfolio to achieve such an investment goal when investing in Oil Futures Contracts and Other Oil-Related Investments.

In addition, USCF believes that market arbitrage opportunities will cause daily changes in USO’s share price on the NYSE Arca on a percentage basis to closely track daily changes in USO’s per share NAV. USCF further believes that the daily changes in the price of the Benchmark Oil Futures Contract have historically closely tracked the daily changes in spot prices of light, sweet crude oil. USCF believes that the net effect of these relationships will be that the daily changes in the price of USO’s shares on the NYSE Arca on a percentage basis will closely track the daily changes in the spot price of a barrel of light, sweet crude oil on a percentage basis, plus interest earned on USO’s collateral holdings, less USO’s expenses.

The following chart shows, for the period ending September 30, 2025, the rolling 30-day average difference between USO’s NAV and the Benchmark Oil Futures Contract. This is measured by subtracting the return of the Benchmark Oil Futures Contract from the return on USO’s NAV for each of the last thirty business days, and then averaging those thirty differences. The calculation is repeated daily.

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

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Prior to the Spring of 2020, USO achieved its investment objective by primarily investing in the Benchmark Oil Futures Contract and Oil Futures Contracts for light, sweet crude oil traded on NYMEX and ICE Futures with the same maturity month as the Benchmark Oil Futures Contract. In the Spring of 2020, significant market volatility occurred in the crude oil markets and the oil futures markets. Such volatility was attributable to the COVID-19 pandemic, related supply chain disruptions and disputes among oil-producing countries over the potential limits on the production of crude oil, and a corresponding collapse in demand for crude oil and a lack of on-land storage for crude oil. Certain circumstances, including the market conditions, regulatory requirements, and risk mitigation measures imposed by its FCMs, resulting from such volatility caused, as discussed below, USO to invest in Oil Futures Contracts other than the Benchmark Oil Futures Contract and to invest in Other Oil-Related Investments, such as swap transactions based on the price of oil.

Accordingly, USO invested in other permitted Oil Futures Contracts with expirations in later months than the Benchmark Oil Futures Contract. USO also invested in other permitted investments, including Other Oil-Related Investments, including OTC swaps. In addition, during the Spring of 2020, USO had to rebalance and adjust the types of holdings in its portfolio more frequently than it had in the past.

Beginning with the monthly roll in September 2023 and ending with the monthly roll in January 2024, USO transitioned its investment portfolio to primarily invest in the Benchmark Oil Futures Contract, consistent with USO’s investment strategy prior to the Spring of 2020. However, USO has had, and will continue to have, the ability to invest in Oil Futures Contracts beyond the Benchmark Oil Futures Contract and Other Oil-Related Investments, such as OTC swaps, and USO may make such investments if market conditions (including but not limited to those allowing USO to obtain greater liquidity (i.e., liquidity requirements) or to execute transactions with more favorable pricing), regulatory requirements (including, but not limited to, exchange accountability levels and position limits imposed by NYMEX as well as statutory or regulatory limits), risk mitigation measures (including those that may be taken by USO, USO’s FCMs, counterparties or other market participants), liquidity requirements, or other factors require USO to do so in order to meet its investment objective. USO may invest in Oil Futures Contracts beyond the Benchmark Oil Futures Contract, and/or Other Oil-Related Investments, as a result of, or in response to, any of the foregoing factors. In addition, USO may need to hold significant portions of its portfolio in cash beyond what it has historically held for reasons including (but not limited to) the need to address changes in market conditions, regulatory requirements or risk mitigation measures or the need to satisfy potential margin requirements.

Investments in Oil Futures Contracts beyond the Benchmark Oil Futures Contract and Other Oil-Related Investments could result in wider deviations between the performance of USO’s investments and the Benchmark Oil Futures Contract than if USO’s investments primarily consisted of the Benchmark Oil Futures Contract, and changes in USO’s share price may not be able to track changes in the price of the Benchmark Oil Futures Contract within as narrow a percentage change difference for any period of 30 successive valuation days as it would if USO’s investments primarily consisted of the Benchmark Oil Futures Contract.

Although permitted to do so under its LP Agreement, USO has not leveraged, and does not intend to leverage, its assets through borrowings or otherwise, and USO makes its investments accordingly. Consistent with the foregoing, USO’s investments will take into account the need for USO to maintain adequate liquidity to meet its margin and collateral requirements and to avoid, to the extent reasonably possible, USO becoming leveraged. If market conditions require it, these risk reduction procedures, including changes to USO’s investments, may occur on short notice.

Regulatory Disclosure

The regulation of commodity interest trading in the United States and other countries is an evolving area of the law. Below are certain key regulatory requirements that are, or may be, relevant to USO. The various statements made in this summary are subject to modification by legislative action and changes in the rules and regulations of the SEC, Financial Industry Regulatory Authority (“FINRA”), CFTC, NFA, the futures exchanges, clearing organizations and other regulatory bodies. Pending final resolution of all applicable regulatory requirements, some examples of how new rules and regulations could impact USO are discussed in “Item 1. Business” in this quarterly report on Form 10-Q.

Exchange Accountability Levels, Position Limits and Price Fluctuation Limits. Designated contract markets (“DCMs”), such as the NYMEX and ICE Futures, have established accountability levels and position limits on the maximum net long or net short futures contracts in commodity interests that any person or group of persons under common trading control (other than as a hedge, which an investment by USO is not) may hold, own or control. These levels and position limits apply to the futures contracts that USO invests in to meet its investment objective. In addition to accountability levels and position limits, the NYMEX and ICE Futures may also set daily price fluctuation limits on futures contracts. The daily price fluctuation limit establishes the maximum amount that the price of a futures contract may vary either up or down from the previous day’s settlement price. Once the daily price fluctuation limit has been reached in a particular futures contract, no trades may be made at a price beyond that limit.

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The accountability levels for the Benchmark Oil Futures Contract and other Oil Futures Contracts traded on U.S.-based futures exchanges, such as the NYMEX, are not a fixed ceiling, but rather a threshold above which the NYMEX may exercise greater scrutiny and control over an investor’s positions. The current accountability level for investments for any one month in the Benchmark Oil Futures Contract is 10,000 contracts. In addition, the NYMEX imposes an accountability level for all months of 20,000 net futures contracts for light, sweet crude oil. In addition, the ICE Futures maintains the same accountability levels, position limits and monitoring authority for its futures contracts for light, sweet crude oil contract as the NYMEX. If USO and the Related Public Funds exceed these accountability levels for investments in the futures contracts for light, sweet crude oil, the NYMEX and ICE Futures will monitor such exposure and may ask for further information on USO’s and the Related Public Funds’ activities including the total size of all positions, investment and trading strategy, and the extent of liquidity resources of USO and the Related Public Funds. If deemed necessary by the NYMEX and/or ICE Futures, USO could be required to reduce its aggregate position in Crude Oil Futures CL contracts back to the 10,000 single month and/or 20,000 all month accountability level. As of September 30, 2025, USO held 11,962 NYMEX WTI Crude Oil Futures CL contracts and did not hold any ICE WTI Crude Oil Futures contracts. USO exceeded accountability levels of the NYMEX during the nine months ended September 30, 2025, including when it held a maximum of 16,232 Crude Oil Futures CL contracts on the NYMEX, exceeding the “any” month limit. No action was taken by the NYMEX and USO did not have to reduce the number of positions held.

Position limits differ from accountability levels in that they represent fixed limits on the maximum number of futures contracts that any person may hold and cannot allow such limits to be exceeded without express CFTC authority to do so. In addition to accountability levels and position limits that may apply at any time, the NYMEX and ICE Futures impose position limits on contracts held in the last few days of trading in the near month contract to expire. Investors should note that the foregoing accountability levels and position limits are subject to change, which in turn could change the amount and type of permitted investments in which USO invests. For the nine months ended September 30, 2025, USO did not exceed any position limits imposed by the NYMEX and ICE Futures. The foregoing accountability levels and position limits are subject to change. Due to evolving market conditions, remaining within relevant accountability levels and position limits, and, any additional or different risk mitigation measures taken by USO’s FCMs in the future with respect to USO acquiring additional Oil Futures contracts, USO has invested and intends to invest in other permitted investments, beyond the Benchmark Oil Futures Contract.

Federal Position Limits

Part 150 of the CFTC’s regulations (the “Position Limits Rule”) establishes federal position limits for 25 core referenced futures contracts (comprised of agricultural, energy and metals futures contracts), futures and options linked to the core referenced futures contracts, and swaps that are economically equivalent to the core referenced futures contracts that all market participants must comply with, with certain exemptions. The Benchmark Oil Futures Contract is subject to position limits under the Position Limits Rule, and USO’s trading does not qualify for an exemption therefrom. Accordingly, the Position Limits Rule could inhibit USO’s ability to invest in the Benchmark Oil Futures Contract and thereby could negatively impact the ability of USO to meet its investment objective.

Position limits may potentially cause a tracking error between the price of USO’s shares and the price of the Benchmark Oil Futures Contract. This may in turn prevent investors from being able to effectively use USO as a way to hedge against crude oil related losses or as a way to indirectly invest in crude oil.

USO has not limited the size of its offering and intends to utilize substantially all of its proceeds to purchase Oil Futures Contracts and Other Oil-Related Investments to the extent possible. If USO encounters accountability levels, position limits (including those set by the Position Limits Rule), or price fluctuation limits for Oil Futures Contracts on the NYMEX or ICE Futures, it may then, if permitted under applicable regulatory requirements, purchase Oil Futures Contracts on other exchanges that trade listed crude oil futures or enter into swaps or other permitted investments to meet its investment objective. In addition, if USO exceeds accountability levels on either the NYMEX or ICE Futures and is required by such exchanges to reduce its holdings, such reduction could potentially cause a tracking error between the price of USO’s shares and the price of the Benchmark Oil Futures Contract.

Margin for OTC Swaps

Rules put in place by U.S. federal banking regulators, the CFTC and the SEC require the daily exchange of variation margin and initial margin for swaps between swap dealers, major swap participants, security-based swap dealers, and major security-based swap participants (“Swap Entities”) and swaps between Swap Entities and their counterparties that are “financial end-users” (such rules, the “Margin Rules”). The Margin Rules require Swap Entities to exchange variation margin with all of their counterparties who are financial end-users. The minimum variation margin amount is the daily mark-to-market change in the value of the swap, taking into account the

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amount of variation margin previously posted or collected. Swap Entities are required to exchange initial margin with their financial end-users who have “material swaps exposure” (i.e., an average daily aggregate notional of $8 billion or more in non-cleared swaps calculated in accordance with the Margin Rules). The Margin Rules specify the types of collateral that may be posted or collected as initial margin or variation margin (generally cash, certain government, government-sponsored enterprise securities, certain liquid debt, certain equity securities, certain eligible publicly traded debt, and gold) and sets forth haircuts for certain collateral asset classes.

USO is not a Swap Entity under the Margin Rules, but it is a financial end-user. Accordingly, USO will be subject to the variation margin requirements of the Margin Rules for any swaps that it enters into. However, USO does not have material swaps exposure under the Margin Rules and, accordingly, USO will not be subject to the initial margin requirements of the Margin Rules.

Mandatory Trading and Clearing of Swaps

CFTC regulations require that certain swap transactions be executed on organized exchanges or “swap execution facilities” and cleared through regulated clearing organizations (“derivative clearing organizations” (“DCOs”)), if the CFTC mandates the central clearing of a particular class of swap and such swap is “made available to trade” on a swap execution facility. Currently, swap dealers, major swap participants, commodity pools, certain private funds and entities predominantly engaged in activities that are financial in nature are required to execute on a swap execution facility, and clear, certain interest rate swaps and index-based credit default swaps. As a result, if USO enters into an interest rate or index-based credit default swap that is subject to these requirements, such swap will be required to be executed on a swap execution facility and centrally cleared. Mandatory clearing and “made available to trade” determinations with respect to additional types of swaps may be issued in the future, and, when finalized, could require USO to electronically execute and centrally clear certain OTC instruments presently entered into and settled on a bi-lateral basis. If a swap is required to be cleared, initial and variation margin requirements are set by the relevant clearing organization, subject to certain regulatory requirements and guidelines. Additional margin may be required and held by USO’s FCMs.

Other Requirements for Swaps

In addition to the margin requirements described above, swaps that are not required to be cleared and executed on a SEF but that are executed bilaterally are also subject to various requirements pursuant to CFTC regulations, including, among other things, reporting and recordkeeping requirements and, depending on the status of the counterparties, trading documentation requirements and dispute resolution requirements.

Derivatives Regulations in Non-U.S. Jurisdictions

In addition to U.S. laws and regulations, USO may be subject to non-U.S. derivatives laws and regulations if it engages in futures and/or swap transactions with non-U.S. persons. For example, USO may be impacted by European laws and regulations to the extent that it engages in futures transactions on European exchanges or derivatives transactions with European entities. Other jurisdictions impose requirements applicable to futures and derivatives that are similar to those imposed by the U.S., including position limits, margin, clearing and trade execution requirements.

The CFTC is generally prohibited by statute from regulating trading on non-U.S. futures exchanges and markets. The CFTC, however, has adopted regulations relating to the marketing of non-U.S. futures contracts in the United States. These regulations permit certain contracts on non-U.S. exchanges to be offered and sold in the United States.

Natural disasters, public health disruptions (such as the COVID-19 pandemic), and international armed conflicts could impact the price of commodities and/or the value, pricing and liquidity of USO’s investments or assets which, in turn, could cause the loss of your investment in USO.

Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including public health disruptions, pandemics and epidemics (for example, the COVID-19 pandemic), can be highly disruptive to economies and markets. Such events can, directly or indirectly, negatively impact, and/or cause volatility in, the price of commodities such as crude oil and the value, pricing, and liquidity of the investments or other assets held by USO.

Geopolitical conflict, including war and armed conflicts (such as the Russia-Ukraine war, conflicts in the Middle East, and the expansion of such conflicts in surrounding areas), sanctions, the introduction of or changes in tariffs or trade barriers, global or local recessions,

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and acts of terrorism, can also, directly or indirectly, negatively impact, and/or cause volatility in, the price of commodities such as crude oil and the value, pricing, and liquidity of the investments or other assets held by USO. A negative impact on, or volatility in, the price of crude oil or the value, pricing and liquidity of USO’s investments or other assets resulting from the occurrence of any of the aforementioned events, or similar events, could cause you to lose all, or substantially all, of your investment in USO.

USO may be subject to interest rate risk, which may prevent USO from investing fully at prevailing rates until any current investments in Treasuries mature in order to avoid selling those investments at a loss.

Interest rate risk is the risk that fixed income securities and other investments in USO’s portfolio will fluctuate in value because of a change in interest rates. Interest rate changes can be sudden and unpredictable, and USO may lose money because of movements in interest rates. When interest rates rise, the value of fixed income securities typically falls. In a rising interest rate environment, USO may not be able to fully invest at prevailing rates until any current investments in Treasuries mature in order to avoid selling those investments at a loss. Interest rate risk is generally lower for shorter term investments and higher for longer term investments. In addition, in rising interest rate environments, it is possible that the Treasuries held by USO will decline in value. When interest rates fall, USO may be required to reinvest the proceeds from the sale, redemption or early prepayment of a Treasury Bill or money market security at a lower interest rate.

As inflation increases, the present value of USO’s assets may decline.

Inflation is a general increase in the overall price level of goods and services in the economy. The United States Federal Reserve has a stated goal of maintaining a two percent increase in inflation over the long run, as measured by the annual change in the price index for personal consumption expenditures. Following the COVID-19 pandemic, the United States experienced inflation above the Federal Reserve’s stated two percent goal. Other world economies similarly experienced elevated inflation rates. The Federal Reserve increased interest rates and successfully reduced inflation so that it is close to the stated two percent goal. As a result, in 2024, the Federal Reserve began reducing interest rates. However, the rate of inflation in the United States is still above the stated two percent goal. Inflation has the effect of eroding the value of cash or bonds. In a high inflation environment, the value of USO’s cash and Treasury investments may decline.

USO may potentially lose money by investing in government money market funds.

USO invests in government money market funds. Although such government money market funds seek to preserve the value of an investment at $1.00 per share, there is no guarantee that they will be able to do so and USO may lose money by investing in a government money market fund. An investment in a government money market fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (the “FDIC”) or any other government agency. The share price of a government money market fund can fall below the $1.00 share price. USO cannot rely on or expect a government money market fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the government money market fund’s $1.00 share price. The credit quality of a government money market fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the government money market fund’s share price. Due to fluctuations in interest rates, the market value of securities held by a government money market fund may vary. A government money market fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets.

Price Movements

Crude oil futures prices were volatile during the nine months ended September 30, 2025. The price of the Benchmark Oil Futures Contract started the period at $71.72 per barrel. The high of the period was on January 15, 2025 when the price reached $78.84 per barrel. The low of the period was on May 5, 2025 when the price dropped to $57.05 per barrel. The period ended with the Benchmark Oil Futures Contract at $62.37 per barrel, a decrease of approximately (13.04)% over the period. USO’s per share NAV began the period at $75.45 and ended the period at $73.58 on September 30, 2025, a decrease of approximately (2.48)% over the period. The Benchmark Oil Futures Contract prices listed above began with the February 2025 contracts and ended with the November 2025 contracts. The decrease of approximately (13.04)% on the Benchmark Oil Futures Contract listed above is a hypothetical return only and would not actually be realized by an investor holding Oil Futures Contracts. An investment in Oil Futures Contracts would need to be rolled forward during the time period described in order to simulate such a result. Furthermore, the change in the nominal price of these differing Oil Futures Contracts, measured from the start of the year to the end of the year, does not represent the actual benchmark results that USO seeks to track, which are more fully described below in the section titled “Tracking USO’s Benchmark.”

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During the nine months ended September 30, 2025, the crude oil futures market experienced states of mild contango. On days when the market was in contango the price of the near month crude Oil Futures Contract was lower than the price of the next month crude Oil Futures Contract, or contracts further away from expiration. On days when the market was in backwardation, the price of the near month crude Oil Futures Contract was higher than the price of the next month crude Oil Futures Contract or contracts further away from expiration. For a discussion of the impact of backwardation and contango on total returns, see “Term Structure of Crude Oil Prices and the Impact on Total Returns” below.

Valuation of Oil Futures Contracts and the Computation of the Per Share NAV

The per share NAV of USO’s shares is calculated once each NYSE Arca trading day. The per share NAV for a particular trading day is released after 4:00 p.m. New York time. Trading during the core trading session on the NYSE Arca typically closes at 4:00 p.m. New York time. USO’s Administrator uses the settlement price determined by NYMEX at 2:30 p.m. Eastern time for the Oil Futures Contracts held on the NYMEX and the settlement price determined by ICE Futures at 2:30 p.m. Eastern time for the Oil Futures Contracts held on ICE Futures, but calculates or determines the value of all other USO investments, other futures contracts, as of the earlier of the close of the NYSE Arca or 4:00 p.m. New York time.

Results of Operations and the Crude Oil Market

Results of Operations.

As of September 30, 2025, USO had 12,023,603 shares outstanding. On August 29, 2023, the SEC declared effective a registration statement filed by USO that registered an unlimited number of shares. As a result, USO has an unlimited number of shares that can be issued in the form of Creation Baskets. More shares may have been issued by USO than are outstanding due to the redemption of shares.

On April 28, 2020, after the close of trading on the NYSE Arca, USO effected a 1-for-8 reverse share split and post-split shares of USO began trading on April 29, 2020. As a result of the reverse share split, every eight pre-split shares of USO were automatically exchanged for one post-split share. Immediately prior to the reverse split, there were 1,482,900,000 shares of USO issued and outstanding, representing a per share NAV of $2.04. Immediately after the effect of the reverse share split, the number of issued and outstanding shares of USO decreased to 185,362,500, not accounting for fractional shares, and the per share NAV increased to $16.35. In connection with the reverse share split, the CUSIP number for USO’s shares changed to 91232N207. USO’s ticker symbol, “USO,” remained the same. The accompanying unaudited financial statements have been adjusted to reflect the effect of the reverse share split on a retroactive basis.

As of September 30, 2025, USO had the following Authorized Participants: ABN AMRO Clearing USA LLC, BNP Paribas Securities Corp., Citadel Securities LLC, Citigroup Global Markets Inc., Goldman Sachs & Company, Jane Street Capital LLC, JP Morgan Securities LLC, Merrill Lynch Professional Clearing Corp., Morgan Stanley & Company Inc., RBC Capital Markets LLC, SG Americas Securities LLC, UBS Securities LLC and Virtu Americas LLC.

For the Nine Months Ended September 30, 2025 Compared to the Nine Months Ended September 30, 2024

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Nine months |  | Nine months |
​ | ​ | ended | ​ | ended | ​
​ | ​ | September 30, 2025 | ​ | September 30, 2024 | ​
Average daily total net assets | ​ | $ | 995,903,360 | ​ | $ | 1,338,957,900 | ​
Dividend and interest income earned on Treasuries, cash and/or cash equivalents | ​ | $ | 29,843,893 | ​ | $ | 48,992,199 | ​
Annualized yield based on average daily total net assets | ​ |  | 4.01 | % |  | 4.89 | %
Management fee | ​ | $ | 3,351,100 | ​ | $ | 4,506,030 | ​
Total fees and other expenses excluding management fees | ​ | $ | 2,981,740 | ​ | $ | 3,760,997 | ​
Total commissions accrued to brokers | ​ | $ | 1,133,961 | ​ | $ | 1,110,080 | ​
Total commissions as annualized percentage of average total net assets | ​ | ​ | 0.15 | % | ​ | 0.11 | %

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Portfolio Expenses. USO’s expenses consist of investment management fees, brokerage fees and commissions, certain offering costs, licensing fees, registration fees, the fees and expenses of the independent directors of USCF and expenses relating to tax accounting and reporting requirements. The management fee that USO pays to USCF is calculated as a percentage of the total net assets of USO. The fee is accrued daily and paid monthly.

Average interest rates earned on short-term investments held by USO, including cash, cash equivalents and Treasuries, were lower during the nine months ended September 30, 2025, compared to the nine months ended September 30, 2024. As a result, the amount of income earned by USO as a percentage of average daily total net assets was lower during the nine months ended September 30, 2025, compared to the nine months ended September 30, 2024. To the degree that the aggregate yield is lower, the net expense ratio, inclusive of income, will be higher.

The decrease in total fees and other expenses excluding management fees for the nine months ended September 30, 2025, compared to the nine months ended September 30, 2024, was due primarily to a decrease in tax reporting and professional fees.

The increase in total commissions accrued to brokers for the nine months ended September 30, 2025, compared to the nine months ended September 30, 2024, was due primarily to a higher number of Oil Futures Contracts being held and traded.

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For the Three Months Ended September 30, 2025 Compared to the Three Months Ended September 30, 2024

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months | ​ | Three months | ​
​ | ​ | ended | ​ | ended | ​
​ |  | September 30, 2025 |  | September 30, 2024 | ​
Average daily total net assets | ​ | $ | 977,565,617 | ​ | $ | 1,267,096,635 | ​
Dividend and interest income earned on Treasuries, cash and/or cash equivalents | ​ | $ | 9,834,523 | ​ | $ | 15,834,884 | ​
Annualized yield based on average daily total net assets | ​ |  | 3.99 | % |  | 4.97 | %
Management fee | ​ | $ | 1,108,653 | ​ | $ | 1,431,839 | ​
Total fees and other expenses excluding management fees | ​ | $ | 988,846 | ​ | $ | 1,243,350 | ​
Total commissions accrued to brokers | ​ | $ | 352,575 | ​ | $ | 368,938 | ​
Total commissions as annualized percentage of average total net assets | ​ |  | 0.14 | % |  | 0.12 | %

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Portfolio Expenses. USO’s expenses consist of investment management fees, brokerage fees and commissions, certain offering costs, licensing fees, registration fees, the fees and expenses of the independent directors of USCF and expenses relating to tax accounting and reporting requirements. The management fee that USO pays to USCF is calculated as a percentage of the total net assets of USO. The fee is accrued daily and paid monthly.

Average interest rates earned on short-term investments held by USO, including cash, cash equivalents and Treasuries, were lower during the three months ended September 30, 2025, compared to the three months ended September 30, 2024. As a result, the amount of income earned by USO as a percentage of average daily total net assets was lower during the three months ended September 30, 2025, compared to the three months ended September 30, 2024. To the degree that the aggregate yield is lower, the net expense ratio, inclusive of income, will be higher.

The decrease in total fees and other expenses excluding management fees for the three months ended September 30, 2025, compared to the three months ended September 30, 2024, was due primarily to a decrease in tax reporting and professional fees.

The decrease in total commissions accrued to brokers for the three months ended September 30, 2025, compared to the three months ended September 30, 2024, was due primarily to a lower number of Oil Futures Contracts being held and traded.

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Tracking USO’s Benchmark

USCF seeks to manage USO’s portfolio such that changes in its average daily per share NAV, on a percentage basis, closely track the daily changes in the average price of the Benchmark Oil Futures Contract, also on a percentage basis. Specifically, USCF seeks to manage the portfolio such that over any rolling period of 30-valuation days, the average daily change in USO’s per share NAV is within a range of 90% to 110% (0.9 to 1.1) of the average daily change in the price of the Benchmark Oil Futures Contract. As an example, if the average daily movement of the price of the Benchmark Oil Futures Contract for a particular 30-valuation day time period was 0.50% per day, USCF would attempt to manage the portfolio such that the average daily movement of the per share NAV during that same time period fell between 0.45% and 0.55% (i.e., between 0.9 and 1.1 of the benchmark’s results). USO’s portfolio management goals do not include trying to make the nominal price of USO’s per share NAV equal to the nominal price of the current Benchmark Oil Futures Contract or the spot price for light, sweet crude oil. USCF believes that it is not practical to manage the portfolio to achieve such an investment goal when investing in Oil Futures Contracts and Other Oil-Related Investments.

For the 30-valuation days ended September 30, 2025, the average daily change in the Benchmark Oil Futures Contract was 0.015%, while the average daily change in the per share NAV of USO over the same time period was 0.027%. The average daily difference was 0.012% (or 1.2 basis points, where 1 basis point equals 1/100 of 1%), meaning that over this time period USO’s NAV performed within the plus or minus 10% range established as its benchmark tracking goal.

Since the commencement of the offering of USO’s shares to the public on April 10, 2006 to September 30, 2025, the average daily change in the Benchmark Oil Futures Contract was 0.002%, while the average daily change in the per share NAV of USO over the same time period was (0.009)%. The average daily difference was (0.011)% (or (1.1) basis points, where 1 basis point equals 1/100 of 1%), meaning that over this time period USO’s NAV performed within the plus or minus 10% range established as its benchmark tracking goal.

The following two charts demonstrate the correlation between the changes in USO’s NAV and the changes in the Benchmark Oil Futures Contract. The first chart below shows the daily movement of USO’s per share NAV versus the daily movement of the Benchmark Oil Futures Contract for the 30 valuation day period ended September 30, 2025. The second chart below shows the monthly total returns of USO as compared to the monthly value of the Benchmark Oil Futures Contract for the five years ended September 30, 2025.

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

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*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

​

​

An alternative tracking measurement of the return performance of USO versus the return of its Benchmark Oil Futures Contract can be calculated by comparing the actual return of USO, measured by changes in its per share NAV, versus the expected changes in its per share NAV under the assumption that USO’s returns had been exactly the same as the daily changes in its Benchmark Oil Futures Contract.

For the nine months ended September 30, 2025, the actual total return of USO as measured by changes in its per share NAV was (2.48)%. This is based on an initial per share NAV of $75.45 as of December 31, 2024 and an ending per share NAV as of September 30, 2025 of $73.58. During this time period, USO made no distributions to its shareholders. However, if USO’s daily changes in its per share NAV had instead exactly tracked the changes in the daily total return of the Benchmark Oil Futures Contract, USO would have had an estimated per share NAV of $71.34 as of September 30, 2025, for a total return over the relevant time period of (5.44)%. The difference between the actual per share NAV total return of USO of (2.48)% and the expected total return based on the Benchmark Oil Futures Contract of (5.44)% was a difference over the time period of 2.96%, which is to say that USO’s actual total return outperformed its benchmark by that percentage. USO incurs expenses primarily composed of the management fee, brokerage commissions for the buying and selling of futures contracts, and other expenses. The impact of these expenses, offset by interest and dividend income, and net of positive or negative execution, and net the difference in returns between USO’s current holdings and the Benchmark Oil Futures Contract tend to cause daily changes in the per share NAV of USO to track slightly higher than daily changes in the price of the Benchmark Oil Futures Contract.

By comparison, for the nine months ended September 30, 2024, the actual total return of USO as measured by changes in its per share NAV was 4.41%. This is based on an initial per share NAV of $66.91 as of December 31, 2023 and an ending per share NAV as of September 30, 2024 of $69.86. During this time period, USO made no distributions to its shareholders. However, if USO’s daily changes in its per share NAV had instead exactly tracked the changes in the daily total return of the Benchmark Oil Futures Contract, USO would have had an estimated per share NAV of $67.81 as of September 30, 2024, for a total return over the relevant time period of 1.35%. The difference between the actual per share NAV total return of USO of 4.41% and the expected total return based on the Benchmark Oil Futures Contract of 1.35% was a difference over the time period of 3.06%, which is to say that USO’s actual total return outperformed its benchmark by that percentage. USO incurs expenses primarily composed of the management fee, brokerage commissions for the buying and selling of futures contracts, and other expenses. The impact of these expenses, offset by interest and dividend income, and net of positive or negative execution, and net the difference in returns between USO’s current holdings and the Benchmark Oil Futures Contract tend to cause daily changes in the per share NAV of USO to track slightly higher or lower than daily changes in the price of the Benchmark Oil Futures Contract.

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As a result of market conditions and the regulatory response that occurred in March 2020 and thereafter, large numbers of USO shares that were purchased during a short period of time, and regulatory accountability levels and position limits on oil futures contracts that were imposed on USO, and risk mitigation measures imposed by its FCMs, USO invested in Oil Futures Contracts in months other than the Benchmark Oil Futures Contract.

Beginning with the monthly roll in September 2023 and ending with the monthly roll in January 2024, USO transitioned its investment portfolio to primarily invest in the Benchmark Oil Futures Contract, consistent with USO’s investment strategy prior to the Spring of 2020. However, USO has had, and will continue to have, the ability to invest in Oil Futures Contracts beyond the Benchmark Oil Futures Contract and Other Oil-Related Investments, such as OTC swaps, and USO may make such investments if market conditions (including but not limited to those allowing USO to obtain greater liquidity (i.e., liquidity requirements) or to execute transactions with more favorable pricing), regulatory requirements (including, but not limited to, exchange accountability levels and position limits imposed by NYMEX as well as statutory or regulatory limits), risk mitigation measures (including those that may be taken by USO, USO’s FCMs, counterparties or other market participants), liquidity requirements, or other factors require USO to do so in order to meet its investment objective. USO may invest in Oil Futures Contracts beyond the Benchmark Oil Futures Contract, and/or Other Oil-Related Investments, as a result of, or in response to, any of the foregoing factors. In addition, USO may need to hold significant portions of its portfolio in cash beyond what it has historically held for reasons including (but not limited to) the need to address the changes in market conditions, regulatory requirements or risk mitigation measures or the need to satisfy potential margin requirements.

During the third quarter of 2025 the rolling 30 day average daily difference between the return of USO’s NAV and the Benchmark Oil Futures Contract was (0.01)% or (1.0) basis points).

There are three factors that typically have impacted or are most likely to impact USO’s ability to accurately track Benchmark Oil Futures Contract in addition to the foregoing.

First, USO may buy or sell its holdings in the then current Benchmark Oil Futures Contract at a price other than the settlement price of that contract on the day during which USO executes the trade. In that case, USO may pay a price that is higher or lower, than the closing settlement price of the Benchmark Oil Futures Contract, which could cause the changes in the daily per share NAV of USO to either be higher or lower relative to the daily changes in the Benchmark Oil Futures Contract. During the nine months ended September 30, 2025, USCF attempted to minimize the effect of these transactions by seeking to execute its purchase or sale of Oil Futures Contracts at, or as close as possible to, the end of the day settlement price. However, it may not always be possible for USO to obtain the settlement price and there is no assurance that failure to obtain the closing settlement price in the future will not adversely impact USO’s attempt to track the Benchmark Oil Futures Contract.

Second, USO incurs expenses primarily composed of the management fee, brokerage commissions for the buying and selling of futures contracts, and other expenses. The impact of these expenses tends to cause daily changes in the per share NAV of USO to track slightly lower than daily changes in the price of the Benchmark Oil Futures Contract. At the same time, USO earns dividend and interest income on its cash, cash equivalents and Treasuries. USO is not required to distribute any portion of its income to its shareholders and did not make any distributions to shareholders during the nine months ended September 30, 2025. Interest payments, and any other income, were retained within the portfolio and added to USO’s NAV. When this income exceeds the level of USO’s expenses for its management fee, brokerage commissions and other expenses (including ongoing registration fees, licensing fees and the fees and expenses of the independent directors of USCF), USO will realize a net yield that will tend to cause daily changes in the per share NAV of USO to track slightly higher than daily changes in the Benchmark Oil Futures Contract. If short-term interest rates rise above these levels, the level of deviation created by the yield would increase. Conversely, if short-term interest rates were to decline, the amount of error created by the yield would decrease. When short-term yields drop to a level lower than the combined expenses of the management fee and the brokerage commissions, then the tracking error becomes a negative number and would tend to cause the daily returns of the per share NAV to underperform the daily returns of the Benchmark Oil Futures Contract. USCF anticipates that interest rates may continue to stagnate over the near future. It is anticipated that fees and expenses paid by USO may continue to be lower than interest earned by USO. As such, USCF anticipates that USO could possibly outperform its benchmark so long as interest earned is greater than the fees and expenses paid by USO.

Third, USO may hold Other Oil-Related Investments in its portfolio that may fail to closely track the Benchmark Oil Futures Contract’s total return movements. In that case, the error in tracking the Benchmark Oil Futures Contract could result in daily changes in the per share NAV of USO that are either too high, or too low, relative to the daily changes in the Benchmark Oil Futures Contract. During the nine months ended September 30, 2025, USO held OTC swaps, which are considered Other Oil-Related Investments. If USO increases in size, and due to its obligations to comply with market conditions, regulatory limits, and risk mitigation measures imposed by its

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FCMs, USO may invest in additional Other Oil-Related Investments, such as OTC swaps, which may have the effect of increasing transaction related expenses and may result in increased tracking error. OTC swaps increase transaction-related expenses due to the fact that USO must pay to the swap counterparty certain fees that USO does not have to pay for transactions executed on an exchange.

Term Structure of Crude Oil Futures Prices and the Impact on Total Returns. Several factors determine the total return from investing in futures contracts. One factor arises from “rolling” futures contracts that will expire at the end of the current month (the “near” or “front” month contract) forward each month prior to expiration. For a strategy that entails holding the near month contract, the price relationship between that futures contract and the next month futures contract will impact returns. For example, if the price of the near month futures contract is higher than the next futures month contract (a situation referred to as “backwardation”), then absent any other change, the price of a next month futures contract tends to rise in value as it becomes the near month futures contract and approaches expiration. Conversely, if the price of a near month futures contract is lower than the next month futures contract (a situation referred to as “contango”), then absent any other change, the price of a next month futures contract tends to decline in value as it becomes the near month futures contract and approaches expiration.

As an example, assume that the price of crude oil for immediate delivery, is $50 per barrel, and the value of a position in the near month futures contract is also $50. Over time, the price of crude oil will fluctuate based on a number of market factors, including demand for oil relative to supply. The value of the near month futures contract will likewise fluctuate in reaction to a number of market factors. If an investor seeks to maintain a position in a near month futures contract and not take delivery of physical barrels of crude oil, the investor must sell the current near month futures contract as it approaches expiration and invest in the next month futures contract. In order to continue holding a position in the current near month futures contract, this “roll” forward of the futures contract must be executed every month.

Contango and backwardation are natural market forces that have impacted the total return on an investment in USO’s shares during the past year relative to a hypothetical direct investment in crude oil. In the future, it is likely that the relationship between the market price of USO’s shares and changes in the spot prices of light, sweet crude oil will continue to be impacted by contango and backwardation. It is important to note that this comparison ignores the potential costs associated with physically owning and storing crude oil, which could be substantial.

If the futures market is in backwardation, e.g., when the price of the near month futures contract is higher than the price of the next month futures contract, the investor would buy a next month futures contract for a lower price than the current near month futures contract. Assuming the price of the next month futures contract was $49 per barrel, or 2% cheaper than the $50 near month futures contract, then, hypothetically, and assuming no other changes (e.g., to either prevailing crude oil prices or the price relationship between the spot price, the near month contract and the next month contract, and, ignoring the impact of commission costs and the income earned on cash and/or cash equivalents), the value of the $49 next month futures contract would rise to $50 as it approaches expiration. In this example, the value of an investment in the next month futures contract would tend to outperform the spot price of crude oil. As a result, it would be possible for the new near month futures contract to rise 12% while the spot price of crude oil may have risen a lower amount, e.g., only 10%. Similarly, the spot price of crude oil could have fallen 10% while the value of an investment in the futures contract might have fallen another amount, e.g., only 8%. Over time, if backwardation remained constant, this difference between the spot price and the futures contract price would continue to increase.

If the futures market is in contango, an investor would be buying a next month futures contract for a higher price than the current near month futures contract. Again, assuming the near month futures contract is $50 per barrel, the price of the next month futures contract might be $51 per barrel, or 2% more expensive than the front month futures contract. Hypothetically, and assuming no other changes, the value of the $51 next month futures contract would fall to $50 as it approaches expiration. In this example, the value of an investment in the second month would tend to underperform the spot price of crude oil. As a result, it would be possible for the new near month futures contract to rise only 10% while the spot price of crude oil may have risen a higher amount, e.g., 12%. Similarly, the spot price of crude oil could have fallen 10% while the value of an investment in the second month futures contract might have fallen another amount, e.g., 12%. Over time, if contango remained constant, this difference between the spot price and the futures contract price would continue to increase.

The chart below compares the daily price of the near month crude oil futures contract to the price of the 13th month crude oil futures contract (i.e., a contract one year forward) over the last 10 years. When the price of the near month futures contract is higher than the price of the 13th month futures contract, the market would be described as being in backwardation. When the price of the near month futures contract is lower than the 13th month futures contract, the market would be described as being in contango. Although the price of the near month futures contract and the price of the 13th month futures contract tend to move together, it can be seen that at times the

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near month futures contract prices are higher than the 13th month futures contract prices (backwardation) and, at other times, the near month futures contract prices are lower than the 13th month futures contract prices (contango).

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

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An alternative way to view the same data is to subtract the dollar price of the 13th month crude oil futures contract from the dollar price of the near month crude oil futures contract, as shown in the chart below. When the difference is positive, the market is in backwardation. When the difference is negative, the market is in contango. The crude oil market spent time in both backwardation and contango during the last ten years.

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*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

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An investment in a portfolio that owned only the near month crude oil futures contract would likely produce a different result than an investment in a portfolio that owned an equal number of each of the near 12 months of crude oil futures contracts. Generally speaking, when the crude oil futures market is in backwardation, a portfolio of only the near month crude oil futures contract may tend to have a higher total return than a portfolio of 12 months of the crude oil futures contract. Conversely, if the crude oil futures market was in contango, the portfolio containing only 12 months of crude oil futures contracts may tend to outperform the portfolio holding only the near month crude oil futures contract.

Historically, the crude oil futures markets have experienced periods of contango and backwardation, with backwardation being in place somewhat less often than contango since oil futures trading started in 1983. Following the global financial crisis in the fourth quarter of 2008, the crude oil market moved into contango and remained primarily in contango until 2013. In 2014, global crude oil inventories grew rapidly after the Organization of the Petroleum Exporting Countries (“OPEC”) voted to defend its market share against U.S. shale-oil producers, resulting in another period during which the crude oil market remained primarily in contango. This period of contango continued through December 31, 2017. Declining global crude oil inventories caused the market to flip into backwardation at the beginning of 2018 through late October 2018, at which point ongoing supply growth in the U.S., combined with increased OPEC production, once again led market participants to fear another global glut of crude oil. The crude oil market was primarily in contango the first half of 2019 and in backwardation during the second half of 2019. Crude oil flipped back into contango in January 2020 and remained predominantly in contango throughout 2020.

In March 2020, contango dramatically increased and reached historic levels during the economic crisis arising from the COVID-19 pandemic, related supply chain disruptions and ongoing disputes among oil producing countries. This level of contango was due to significant market volatility that occurred in crude oil markets as well as oil futures markets. Crude oil prices collapsed in the wake of

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the COVID-19 demand shock, which reduced global petroleum consumption, and the price war launched by Saudi Arabia at the beginning of March 2020 in response to Russia’s unwillingness to participate in extending previously agreed upon supply cuts. An estimated twenty million barrels a day of crude demand evaporated as a result of quarantines and massive drops in industrial and manufacturing activity. Eventually, the United States, OPEC, Russia, and other oil producers around the world agreed to a historic 9.7 million barrel per day cut to crude supply. The supply cut along with the partial reopening of economies during the third quarter of 2020 reduced some of the unprecedented volatility that oil markets experienced in the Spring of 2020.

During the twelve months ended December 31, 2020, the crude oil futures market spent time in both a state of contango and backwardation as measured by the difference between the front month and the second month contract, whereas the crude oil futures market has primarily been in a state of backwardation since 2021 as measured by the difference between the front month and the second month contract.

As a result of market and regulatory conditions, including significant market volatility, large numbers of USO shares purchased during a short period of time, applicable regulatory accountability levels and position limits on oil futures contracts and risk mitigation measures that were taken by USO and USO’s FCM in 2020, USO invested in Oil Futures Contracts with expiration dates for months later than that of the Benchmark Oil Futures Contract. Holdings in later month contracts will typically cause USO to experience lesser effects from contango and backwardation than would be the case if USO’s holdings were primarily in oil futures contracts in the first month or second month. Beginning with the monthly roll in September 2023 and ending with the monthly roll in January 2024, USO transitioned its investment portfolio to primarily invest in the Benchmark Oil Futures Contract, consistent with USO’s investment strategy prior to the Spring of 2020. However, USO has had, and will continue to have, the ability to invest in Oil Futures Contracts beyond the Benchmark Oil Futures Contract and Other Oil-Related Investments, such as OTC swaps, and USO may make such investments if market conditions (including but not limited to those allowing USO to obtain greater liquidity (i.e., liquidity requirements) or to execute transactions with more favorable pricing), regulatory requirements (including, but not limited to, exchange accountability levels and position limits imposed by NYMEX as well as statutory or regulatory limits), risk mitigation measures (including those that may be taken by USO, USO’s FCMs, counterparties or other market participants), liquidity requirements, or other factors require USO to do so in order to meet its investment objective. USO may invest in Oil Futures Contracts beyond the Benchmark Oil Futures Contract, and/or Other Oil-Related Investments, as a result of, or in response to, any of the foregoing factors. In addition, USO may need to hold significant portions of its portfolio in cash beyond what it has historically held for reasons including (but not limited to) the need to address the changes in market conditions, regulatory requirements or risk mitigation measures or the need to satisfy potential margin requirements.

Crude Oil Market. During the nine months ended September 30, 2025, the price of the front month WTI crude oil futures contract traded in a range between $57.13 to $80.04. Prices decreased (13.04)% from December 31, 2024 through September 30, 2025, finishing the quarter at $62.37.

The early 2020’s witnessed extraordinary events in global financial markets, and crude oil offered no exception. During the first half of 2020, simultaneous demand and supply shocks led to unparalleled risk and volatility in oil futures markets. The oil demand shock was caused by the COVID-19 pandemic and the oil supply shock was caused by a Saudi-Russia price war. These twin shocks, which had never occurred at the same time before, caused several unprecedented effects. First, the front month WTI Oil Futures Contract traded at negative prices for the first and only time in history. Crude oil hit an all-time closing low of $(37.63) on April 20, 2020. Second, annualized volatility of front month WTI crude oil futures prices reached 984% in May 2020 after averaging 25% in the first two months of 2020 and 35% in 2019. The volatility includes several record-breaking returns that occurred between March and May of 2020. Third, WTI Oil Futures Contracts, which typically move together (i.e., increase or decrease) about 99% of the time, often moved in opposite directions, with daily correlation dropping to (24%). Fourth, futures curves, which can exhibit conditions known as “contango” and “backwardation” (as discussed above), moved into an extreme formation that some market experts referred to as “super contango.” This was a result of extreme bearishness in spot prices, which saw the front month WTI Oil Futures Contract detach from the rest of the futures curve and fall to an extreme position relative to later dated futures contracts. USO, among other market participants, diversified its portfolio away from the front of the futures curve in favor of deferred contract months.

As economies reopened and OPEC+ supply cuts were absorbed by the market, WTI crude oil prices rose from all-time lows and conditions for a new bull market emerged. Bullish fundamentals for crude oil prices were already in place when Russia invaded Ukraine in February of 2022. The war led to another round of heightened volatility and higher prices. Crude oil peaked in May 2022, then declined for the remainder of the year. Since early 2023, crude oil prices have traded mostly between approximately $65 to $80, with several prominent price reversals.

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In the third quarter of 2025, U.S. crude oil production averaged 13.4 mbd. U.S. production rose significantly over the last five years. OPEC crude production declined from late 2022 through the third quarter of 2024 as the cartel supported prices with overall quotas and voluntary output cuts by certain countries, particularly Saudi Arabia. OPEC output rose during the nine months ending September 30, 2025, but remained below pre- and post-pandemic highs. OPEC fiercely supported prices with voluntary cuts and production quotas from mid-2022 to late 2024. The cartel announced plans to begin unwinding voluntary cuts and increasing quotas in 2024 and has begun to do so after delaying and adjusting these plans several times. While OPEC has steadily increased output several times in 2025, it has also reaffirmed its commitment to maintaining oil market stability and retains the flexibility to change plans as market conditions warrant. Nevertheless, the long-expected and repeatedly delayed reduction of quotas and voluntary cuts is finally underway. While not a complete policy reversal, the “OPEC put” which kept a floor on prices over the last several years has likely moved lower . Russia and OPEC have still not returned to pre-pandemic production levels, while the U.S. has become the world's largest crude oil producing nation and other oil producing nations have also increased their output. In the U.S., the Trump administration has aggressively called for increased domestic production and its actions have and will make more drilling possible. However, U.S. drillers have shown restraint in recent years, and production may not rise as much in the future as it has in the recent past. Technology, geology, and economics tend to be larger determinants of U.S. production levels than political policy.

In April of 2025, the Trump administration announced large and widespread tariffs on trading partners. While no tariffs on crude oil itself were announced, and the administration later paused tariff implementation and announced changing tariff levels on a country-by-country basis, the overall impact of the administration's actions may increase the risk of a global economic slowdown or recession, which would reduce demand for crude oil. As negotiations with trading partners continue, final trade policy remains elusive and crude oil prices may be volatile as a result.

The current geopolitical situation adds complexity to the supply-demand equation. In June of 2025, Israel and the United States attacked Iran's nuclear facilities, raising speculation that Iran might attempt to close the Strait of Hormuz. As approximately 20% of global petroleum consumption transits the Strait daily, this could have a significant effect on prices. As it stands, Iran did not close the Strait, and prices fell back to the mid-$65 range after briefly topping $75. Global tensions, with existing and potential conflicts in various regions, remain a flash point for risk to crude oil supply, which could raise prices. Conversely, any resolution of geopolitical conflicts could ease supply disruptions, sanctions, and price volatility, which could lower prices.

Crude Oil Price Movements in Comparison to Other Energy Commodities and Investment Categories. USCF believes that investors frequently measure the degree to which prices or total returns of one investment or asset class move up or down in value in concert with another investment or asset class. Statistically, such a measure is usually done by measuring the correlation of the price movements of the two different investments or asset classes over some period of time. The correlation is scaled between 1 and -1, where 1 indicates that the two investment options move up or down in price or value together, known as “positive correlation,” and -1 indicates that they move in completely opposite directions, known as “negative correlation.” A correlation of 0 would mean that the movements of the two are neither positively nor negatively correlated, known as “non-correlation.” That is, the investment options sometimes move up and down together and other times move in opposite directions.

For the ten-year time period between September 30, 2015 and September 30, 2025, the table below compares the monthly movements of crude oil prices versus the monthly movements of the prices of several other energy commodities, such as natural gas, diesel-heating oil, and unleaded gasoline, as well as several major non-commodity investment asset classes, such as large cap U.S. equities, U.S. government bonds and global equities.

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*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

Crude Oil - 10 Years

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Large Cap US | ​ | US Gov’t Bonds | ​ | Global Equities | ​ | Unleaded | ​ | Heating | ​ | Natural | ​ | Crude
Correlation Matrix 10 Years |  | Equities (S&P 600) |  | (BEUSG4 Index) |  | (FTSE World Index) |  | Gasoline |  | Oil |  | Gas |  | Oil
Large Cap US Equities (S&P 500) | ​ | 1.000 | ​ | 0.148 | ​ | 0.979 | ​ | 0.414 | ​ | 0.189 | ​ | 0.097 | ​ | 0.360
US Gov’t Bonds (BEUSG4 Index) | ​ | ​ | ​ | 1.000 | ​ | 0.169 | ​ | (0.172) | ​ | (0.371) | ​ | (0.135) | ​ | (0.247)
Global Equities (FTSE World Index) |  | ​ | ​ | ​ | ​ | 1.000 |  | 0.446 |  | 0.219 |  | 0.048 |  | 0.392
Unleaded Gasoline |  | ​ | ​ | ​ | ​ | ​ | ​ | 1.000 |  | 0.616 |  | (0.001) |  | 0.749
Heating Oil |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 1.000 |  | 0.039 |  | 0.767
Natural Gas |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 1.000 |  | 0.007
Crude Oil | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 1.000

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Source: Bloomberg, NYMEX

The table below covers a more recent, but much shorter, range of dates than the above table.

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

Crude Oil - 1 Year

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Large Cap US | ​ | US Gov’t Bonds | ​ | Global Equities | ​ | Unleaded | ​ | Heating | ​ | Natural | ​ | Crude
Correlation Matrix 1 Year |  | Equities (S&P 500) |  | (BEUSG4 Index) |  | (FTSE World Index) |  | Gasoline |  | Oil |  | Gas |  | Oil
Large Cap US Equities (S&P 500) | ​ | 1.000 | ​ | 0.164 | ​ | 0.962 | ​ | (0.398) | ​ | 0.268 | ​ | 0.058 | ​ | 0.129
US Gov’t Bonds (BEUSG4 Index) |  | ​ | ​ | 1.000 | ​ | 0.304 | ​ | (0.340) | ​ | (0.286) | ​ | 0.323 | ​ | (0.448)
Global Equities (FTSE World Index) |  | ​ | ​ | ​ | ​ | 1.000 |  | (0.444) |  | 0.172 |  | (0.045) |  | (0.012)
Unleaded Gasoline |  | ​ | ​ | ​ | ​ | ​ | ​ | 1.000 |  | 0.392 |  | (0.262) |  | 0.690
Heating Oil |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 1.000 |  | (0.171) |  | 0.802
Natural Gas |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 1.000 |  | (0.009)
Crude Oil | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 1.000

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Source: Bloomberg, NYMEX

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Investors are cautioned that the historical price relationships between crude oil and various other energy commodities, as well as other investment asset classes, as measured by correlation may not be reliable predictors of future price movements and correlation results. The results pictured above would have been different if a different range of dates had been selected. USCF believes that crude oil has historically not demonstrated a strong correlation with equities or bonds over long periods of time. However, USCF also believes that in the future it is possible that crude oil could have long term correlation results that indicate prices of crude oil more closely track the movements of equities or bonds. In addition, USCF believes that, when measured over time periods shorter than ten years, there will always be some periods where the correlation of crude oil to equities and bonds will be either more strongly positively correlated or more strongly negatively correlated than the long term historical results suggest.

The correlations between crude oil, natural gas, diesel-heating oil and gasoline are relevant because USCF endeavors to invest USO’s assets in Oil Futures Contracts and Other Oil-Related Investments so that daily changes in percentage terms in USO’s per share NAV correlate as closely as possible with daily changes in percentage terms in the price of the Benchmark Oil Futures Contract. If certain other fuel-based commodity futures contracts do not closely correlate with the crude-oil futures contract, then their use could lead to greater tracking error. As noted above, USCF also believes that the changes in percentage terms in the price of the Benchmark Oil Futures Contract will closely correlate with changes in percentage terms in the spot price of light, sweet crude oil.

Critical Accounting Policies

Preparation of the financial statements and related disclosures in compliance with accounting principles generally accepted in the United States of America requires the application of appropriate accounting rules and guidance, as well as the use of estimates. USO’s application of these policies involves judgments and actual results may differ from the estimates used.

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USCF has evaluated the nature and types of estimates that it makes in preparing USO’s financial statements and related disclosures and has determined that the valuation of its investments, which are not traded on a United States or internationally recognized futures exchange (such as forward contracts and OTC swaps) involves a critical accounting policy. The values which are used by USO for its Oil Futures Contracts are provided by its commodity broker who uses market prices when available, while OTC swaps are valued based on the present value of estimated future cash flows that would be received from or paid to a third party in settlement of these derivative contracts prior to their delivery date and valued on a daily basis. In addition, USO estimates interest and dividend income on a daily basis using prevailing rates earned on its cash and cash equivalents. These estimates are adjusted to the actual amount received on a monthly basis and the difference, if any, is not considered material.

Liquidity and Capital Resources

USO has not made, and does not anticipate making, use of borrowings or other lines of credit to meet its obligations. USO has met, and it is anticipated that USO will continue to meet, its liquidity needs in the normal course of business from the proceeds of the sale of its investments, or from the Treasuries, cash and/or cash equivalents that it intends to hold at all times. USO’s liquidity needs include: redeeming shares, providing margin deposits for its existing Oil Futures Contracts or the purchase of additional Oil Futures Contracts and posting collateral for its OTC swaps, if applicable, and payment of its expenses, summarized below under “Contractual Obligations.”

USO currently generates cash primarily from: (i) the sale of baskets consisting of 100,000 shares (“Creation Baskets”) and (ii) income earned on Treasuries, cash and/or cash equivalents. USO has allocated substantially all of its net assets to trading in Oil Interests. USO invests in Oil Interests to the fullest extent possible without being leveraged or unable to satisfy its current or potential margin or collateral obligations with respect to its investments in Oil Futures Contracts and Other Oil-Related Investments. A significant portion of USO’s NAV is held in cash and cash equivalents that are used as margin and as collateral for its trading in Oil Interests. The balance of the assets is held in USO’s account at its custodian bank and in investments in money market funds and Treasuries at the FCMs. Income received from USO’s investments in money market funds and Treasuries is paid to USO. During the nine months ended September 30, 2025, USO’s expenses did not exceed the income USO earned and the cash earned from the sale of Creation Baskets and the redemption of Redemption Baskets. During the nine months ended September 30, 2025, USO did not use other assets to pay expenses. To the extent income exceeded expenses, USO’s NAV will be positively impacted.

Although permitted to do so under its LP Agreement, USO has not leveraged, and does not intend to leverage, its assets through borrowings or otherwise, and USO makes its investments accordingly. Consistent with the foregoing, USO’s investments will take into account the need for USO to maintain adequate liquidity to meet its margin and collateral requirements and to avoid, to the extent reasonably possible, USO becoming leveraged. If market conditions require it, these risk reduction procedures, including changes to USO’s investments, may occur on short notice.

USO does not and will not borrow money or use debt to satisfy its margin or collateral obligations in respect of its investments, but it could become leveraged if USO were to hold insufficient assets that would allow it to meet not only the current, but also future, margin or collateral obligations required for such investments. Such a circumstance could occur if USO were to hold assets that have a value of less than zero.

USCF endeavors to have the value of USO’s Treasuries, cash and cash equivalents, whether held by USO or posted as margin or other collateral, at all times approximate the aggregate market value of its obligations under its Oil Futures Contracts and Other Oil-Related Investments.

USO’s investments in Oil Interests may be subject to periods of illiquidity because of market conditions, regulatory considerations and other reasons. For example, most commodity exchanges limit the fluctuations in futures contracts prices during a single day by regulations referred to as “daily limits.” During a single day, no trades may be executed at prices beyond the daily limit. Once the price of a futures contract has increased or decreased by an amount equal to the daily limit, positions in the contracts can neither be taken nor liquidated unless the traders are willing to effect trades at or within the specified daily limit. Such market conditions could prevent USO from promptly liquidating its positions in Futures Contracts. During the nine months ended September 30, 2025, USO did not purchase or liquidate any of its positions while daily limits were in effect; however, USO cannot predict whether such an event may occur in the future.

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Since the March 23, 2007, USO has been responsible for expenses relating to: (i) management fees, (ii) brokerage fees and commissions, (iii) licensing fees for the use of intellectual property, (iv) ongoing registration expenses in connection with offers and sales of its shares subsequent to the initial offering, (v) other expenses, including tax reporting costs, (vi) fees and expenses of the independent directors of USCF and (vii) other extraordinary expenses not in the ordinary course of business.

USO may terminate at any time, regardless of whether USO has incurred losses, subject to the terms of the LP Agreement. In particular, unforeseen circumstances, including, but not limited to, (i) market conditions, regulatory requirements, risk mitigation measures (including those that may be taken by USO, USO’s FCMs, counterparties or other market participants) that would lead USO to determine that it could no longer foreseeably meet its investment objective or that USO’s aggregate net assets in relation to its operating expenses or its margin or collateral requirements make the continued operation of USO unreasonable or imprudent, or (ii) adjudication of incompetence, bankruptcy, dissolution, withdrawal, or removal of USCF as the general partner of USO could cause USO, to terminate unless a majority interest of the limited partners within 90 days of the event elects to continue the partnership and appoints a successor general partner, or the affirmative vote of a majority in interest of the limited partners subject to certain conditions. However, no level of losses will require USCF to terminate USO. USO’s termination would cause the liquidation and potential loss of an investor’s investment. Termination could also negatively affect the overall maturity and timing of an investor’s investment portfolio.

Market Risk

Trading in Oil Futures Contracts and Other Oil-Related Investments, such as forwards, involves USO entering into contractual commitments to purchase or sell oil at a specified date in the future. The aggregate market value of the contracts will significantly exceed USO’s future cash requirements since USO intends to close out its open positions prior to settlement. As a result, USO is generally only subject to the risk of loss arising from the change in value of the contracts. USO considers the “fair value” of its derivative instruments to be the unrealized gain or loss on the contracts. The market risk associated with USO’s commitments to purchase oil is limited to the aggregate market value of the contracts held. However, should USO enter into a contractual commitment to sell oil, it would be required to make delivery of the oil at the contract price, repurchase the contract at prevailing prices or settle in cash. Since there are no limits on the future price of oil, the market risk to USO could be unlimited.

USO’s exposure to market risk depends on a number of factors, including the markets for oil, the volatility of interest rates and foreign exchange rates, the liquidity of the Oil Futures Contracts and Other Oil-Related Investments markets and the relationships among the contracts held by USO. Drastic market occurrences could ultimately lead to the loss of all or substantially all of an investor’s capital.

Credit Risk

When USO enters into Oil Futures Contracts and Other Oil-Related Investments, it is exposed to the credit risk that the counterparty will not be able to meet its obligations. The counterparty for the Oil Futures Contracts traded on the NYMEX and on most other futures exchanges is the clearinghouse associated with the particular exchange. In general, in addition to margin required to be posted by the clearinghouse in connection with cleared trades, clearinghouses are backed by their members who may be required to share in the financial burden resulting from the nonperformance of one of their members and, therefore, this additional member support should significantly reduce credit risk. USO is not currently a member of any clearinghouse. Some foreign exchanges are not backed by their clearinghouse members but may be backed by a consortium of banks or other financial institutions. There can be no assurance that any counterparty, clearinghouse, or their members or their financial backers will satisfy their obligations to USO in such circumstances.

USCF attempts to manage the credit risk of USO by following various trading limitations and policies. In particular, USO generally posts margin and/or holds liquid assets that are approximately equal to the market value of its obligations to counterparties under the Oil Futures Contracts and Other Oil-Related Investments it holds. USCF has implemented procedures that include, but are not limited to, executing and clearing trades only with creditworthy parties and/or requiring the posting of collateral or margin by such parties for the benefit of USO to limit its credit exposure. An FCM, when acting on behalf of USO in accepting orders to purchase or sell Oil Futures Contracts on United States exchanges, is required by CFTC regulations to separately account for and segregate as belonging to USO, all assets of USO relating to domestic Oil Futures Contracts trading. These FCMs are not allowed to commingle USO’s assets with their other assets. In addition, the CFTC requires FCMs to hold in a secure account USO’s assets related to foreign Oil Futures Contracts and, in some cases, to cleared swaps executed through the FCMs. Similarly, under its current OTC agreements, USO requires that collateral it posts or receives be posted with its custodian, and under agreements among the custodian, USO and its counterparties, such collateral is segregated.

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USO may purchase OTC swaps in the future periods, see “Item 3. Quantitative and Qualitative Disclosures About Market Risk” in this quarterly report on Form 10-Q for a discussion of OTC swaps.

As of September 30, 2025, USO held cash deposits and short-term investments in the amount of $901,511,887 with the custodian and FCMs. Some or all of these amounts held by a custodian or an FCM, as applicable, may be subject to loss should USO’s custodian or FCMs, as applicable, cease operations.

Off Balance Sheet Financing

As of September 30, 2025, USO had no loan guarantee, credit support or other off-balance sheet arrangements of any kind other than agreements entered into in the normal course of business, which may include indemnification provisions relating to certain risks that service providers undertake in performing services which are in the best interests of USO. While USO’s exposure under these indemnification provisions cannot be estimated, they are not expected to have a material impact on USO’s financial position.

Redemption Basket Obligation

In order to meet its investment objective and pay its contractual obligations described below, USO requires liquidity to redeem shares, which redemptions must be in blocks of 100,000 shares called “Redemption Baskets.” USO has to date satisfied this obligation by paying from the cash or cash equivalents it holds or through the sale of its Treasuries in an amount proportionate to the number of shares being redeemed.

Contractual Obligations

USO’s primary contractual obligations are with USCF. In return for its services, USCF is entitled to a management fee calculated daily and paid monthly as a fixed percentage of USO’s NAV, currently 0.45% of NAV on its average daily total net assets.

USCF agreed to pay the start-up costs associated with the formation of USO, primarily its legal, accounting and other costs in connection with USCF’s registration with the CFTC as a CPO and the registration and listing of USO and its shares with the SEC, FINRA and NYSE Arca (formerly, AMEX), respectively. However, since USO’s initial offering of shares, offering costs incurred in connection with registering and listing additional shares of USO have been directly borne on an ongoing basis by USO, and not by USCF.

USCF pays the fees of the Marketing Agent as well as BNY Mellon’s fees for performing administrative, custodial, and transfer agency services. BNY Mellon’s fees for performing administrative services include those in connection with the preparation of USO’s financial statements and its SEC, NFA and CFTC reports. USCF and USO have also entered into a licensing agreement with the NYMEX pursuant to which USO and the Related Public Funds, other than BNO, USCI and CPER, pay a licensing fee to the NYMEX. USO also pays the fees and expenses associated with its tax accounting and reporting requirements.

In addition to USCF’s management fee, USO pays its brokerage fees (including fees to FCMs), OTC dealer spreads, any licensing fees for the use of intellectual property, and, subsequent to the initial offering, registration and other fees paid to the SEC, FINRA, or other regulatory agencies in connection with the offer and sale of shares, as well as legal, printing, accounting and other expenses associated therewith, and extraordinary expenses. The latter are expenses not incurred in the ordinary course of USO’s business, including expenses relating to the indemnification of any person against liabilities and obligations to the extent permitted by law and under the LP Agreement, the bringing or defending of actions in law or in equity or otherwise conducting litigation and incurring legal expenses and the settlement of claims and litigation. Commission payments to FCMs are on a contract-by-contract, or round turn, basis. USO also pays a portion of the fees and expenses of the independent directors of USCF. See Note 3 to the Notes to Financial Statements (Unaudited) in Item 1 of this quarterly report on Form 10-Q.

The parties cannot anticipate the amount of payments that will be required under these arrangements for future periods, as USO’s per share NAVs and trading levels to meet its investment objective will not be known until a future date. These agreements are effective for a specific term agreed upon by the parties with an option to renew, or, in some cases, are in effect for the duration of USO’s existence. Either party may terminate these agreements earlier for certain reasons described in the agreements.

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As of September 30, 2025, USO’s portfolio held 11,962 Oil Futures Contracts traded on the NYMEX. As of September 30, 2025, USO did not hold any Oil Futures Contracts traded on the ICE Futures. For a list of USO’s current holdings, please see USO’s website at www.uscfinvestments.com.

The end of day portfolio disclosed on USO’s website would reflect any investments in Futures Contracts beyond the Benchmark Oil Futures Contract, and/or Other Oil-Related Investments, including any made in light of market conditions, regulatory requirements, risk mitigation measures (including those that may be taken by USO, USO’s FCMs, counterparties or other market participants), liquidity requirements, or other factors. Independent of the USO website, USO may make available portfolio holdings information to Authorized Participants that reflects USO’s anticipated holdings.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Commodity Price Risk

USO is exposed to commodity price risk. In particular, USO is exposed to crude oil price risk through its holdings of Oil Futures Contracts together with any other derivatives in which it may invest, which are discussed below. As a result, fluctuations in the value of the Oil Futures Contracts that USO holds in its portfolio, as described in “Contractual Obligations” under “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” above, are expected to directly affect the value of USO’s shares.

OTC Contract Risk

USO may purchase OTC contracts, such as forward contracts or swap or spot contracts. Unlike most exchange-traded futures contracts or exchange-traded options on such futures, each party to an OTC swap bears the credit risk that the other party may not be able to perform its obligations under its contract.

USO may enter into certain transactions where an OTC component is exchanged for a corresponding futures contract (“Exchange for Related Position” or “EFRP” transactions). In the most common type of EFRP transaction entered into by USO, the OTC component is the purchase or sale of one or more baskets of USO shares. These EFRP transactions may expose USO to counterparty risk during the interim period between the execution of the OTC component and the exchange for a corresponding futures contract. Generally, the counterparty risk from the EFRP transaction will exist only on the day of execution.

Swap transactions, like other financial transactions, involve a variety of significant risks. The specific risks presented by a particular swap transaction necessarily depend upon the terms and circumstances of the transaction. In general, however, all swap transactions involve some combination of market risk, credit risk, counterparty credit risk, funding risk, liquidity risk and operational risk.

Highly customized swap transactions in particular may increase liquidity risk, which may result in a suspension of redemptions. Highly leveraged transactions may experience substantial gains or losses in value as a result of relatively small changes in the value or level of an underlying or related market factor.

In evaluating the risks and contractual obligations associated with a particular swap transaction, it is important to consider that a swap transaction may be modified or terminated only by mutual consent of the original parties and subject to agreement on individually negotiated terms. Therefore, it may not be possible for USCF to modify, terminate or offset USO’s obligations or its exposure to the risks associated with a transaction prior to its scheduled termination date.

To reduce the credit risk that arises in connection with such contracts, USO will generally enter into an agreement with each counterparty based on the Master Agreement published by ISDA that provides for the netting of its overall exposure to its counterparty and consistent with applicable regulatory requirements, the posting by each party to cover the mark-to-market exposure of a counterparty to the other counterparty is required.

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USCF assesses or reviews, as appropriate, the creditworthiness of each potential or existing counterparty to an OTC swap pursuant to guidelines approved by USCF’s board of directors (the “Board”). Furthermore, USCF on behalf of USO only enters into OTC swaps with counterparties who are, or are affiliates of, (a) banks regulated by a United States federal bank regulator, (b) broker-dealers regulated by the SEC, (c) insurance companies domiciled in the United States, or (d) producers, users or traders of energy, whether or not regulated by the CFTC. Any entity acting as a counterparty shall be regulated in either the United States or the United Kingdom unless otherwise approved by the Board after consultation with its legal counsel. Existing counterparties are also reviewed periodically by USCF. USO will also require that the counterparty be highly rated and/or provide collateral or other credit support. Even if collateral is used to reduce counterparty credit risk, sudden changes in the value of OTC transactions may leave a party open to financial risk due to a counterparty default since the collateral held may not cover a party’s exposure on the transaction in such situations.

In general, valuing OTC derivatives is less certain than valuing actively traded financial instruments such as exchange-traded futures contracts and securities or cleared swaps because the price and terms on which such OTC derivatives are entered into or can be terminated are individually negotiated, and those prices and terms may not reflect the best price or terms available from other sources. In addition, while market makers and dealers generally quote indicative prices or terms for entering into or terminating OTC swaps, they typically are not contractually obligated to do so, particularly if they are not a party to the transaction. As a result, it may be difficult to obtain an independent value for an outstanding OTC derivatives transaction.

During the nine-month reporting period ended September 30, 2025, USO’s OTC transactions comprised OTC swaps intended to reflect the return on USO’s investments in Oil Futures Contracts and EFRP transactions.

USO anticipates that the use of Other Oil-Related Investments together with its investments in Oil Futures Contracts will produce price and total return results that closely track the investment goals of USO. However, there can be no assurance of this. OTC swaps may result in higher transaction-related expenses than the brokerage commissions paid in connection with the purchase of Oil Futures Contracts, which may impact USO’s ability to successfully track the Benchmark Oil Futures Contract.

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Item 4. Controls and Procedures.

Disclosure Controls and Procedures

USO maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in USO’s periodic reports filed or submitted under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time period specified in the SEC’s rules and forms.

The duly appointed officers of USCF, including its chief executive officer and chief financial officer, who perform functions equivalent to those of a principal executive officer and principal financial officer of USO if USO had any officers, have evaluated the effectiveness of USO’s disclosure controls and procedures and have concluded that the disclosure controls and procedures of USO have been effective as of the end of the period covered by this quarterly report on Form 10-Q.

Change in Internal Control Over Financial Reporting

There were no changes in USO’s internal control over financial reporting during USO’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, USO’s internal control over financial reporting.

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Part II. OTHER INFORMATION

Item 1. Legal Proceedings.

From time to time, USO may be involved in legal proceedings arising primarily from the ordinary course of its business. In addition, USCF, as the general partner of USO and the Related Public Funds may, from time to time, be involved in litigation arising out of its operations in the ordinary course of business. Except as described herein, neither USO nor USCF is not currently party to any material legal proceedings.

Optimum Strategies Action

On April 6, 2022, USO and USCF were named as defendants in an action filed by Optimum Strategies Fund I, LP, a purported investor in call option contracts on USO (the “Optimum Strategies Action”). The action was in the U.S. District Court for the District of Connecticut at Civil Action No. 3:22-cv-00511.

The Optimum Strategies Action asserted claims under the Securities Exchange Act of 1934, as amended (the “1934 Act”), Rule 10b-5 thereunder, and the Connecticut Uniform Securities Act (“CUSA”). It purported to challenge statements in registration statements that became effective in February 2020, March 2020, and on April 20, 2020, as well as public statements between February 2020 and May 2020, in connection with certain extraordinary market conditions and the attendant risks that caused the demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The complaint was seeking damages, interest, costs, attorney’s fees, and equitable relief.

On March 15, 2023, the court granted the USO defendants’ motion to dismiss the complaint. In its ruling, the court granted the USO defendants’ motion to dismiss, with prejudice, the plaintiff’s claims under Section 10(b) of the Exchange Act and Rule 10b-5 thereunder, and a claim for control person liability under Section 20(a) of the Exchange Act. Having dismissed all claims over which the court had original jurisdiction, the court declined to exercise supplemental jurisdiction over the plaintiff’s state law claim under CUSA and dismissed the claim without prejudice. No notice of appeal was filed.

Settlement of SEC and CFTC Investigations

On November 8, 2021, USCF and USO announced a resolution with each of the SEC and the CFTC relating to matters set forth in certain Wells Notices issued by the staffs of each of the SEC and CFTC as more fully described below.

On August 17, 2020, USCF, USO, and John Love received a “Wells Notice” from the staff of the SEC (the “SEC Wells Notice”). The SEC Wells Notice stated that the SEC staff made a preliminary determination to recommend that the SEC file an enforcement action against USCF, USO, and Mr. Love alleging violations of Sections 17(a)(1) and 17(a)(3) of the Securities Act of 1933, as amended (the “1933 Act”), and Section 10(b) of the 1934 Act, as amended (the “1934 Act”), and Rule 10b-5 thereunder.

Subsequently, on August 19, 2020, USCF, USO, and Mr. Love received a Wells Notice from the staff of the CFTC (the “CFTC Wells Notice”). The CFTC Wells Notice stated that the CFTC staff made a preliminary determination to recommend that the CFTC file an enforcement action against USCF, USO, and Mr. Love alleging violations of Sections 4o(1)(A) and (B) and 6(c)(1) of the Commodity Exchange Act of 1936, as amended (the “CEA”), 7 U.S.C. §§ 6o(1)(A) and (B) and 9(1) (2018), and CFTC Regulations 4.26, 4.41, and 180.1(a), 17 C.F.R. §§ 4.26, 4.41, 180.1(a) (2019).

On November 8, 2021, acting pursuant to an offer of settlement submitted by USCF and USO, the SEC issued an order instituting cease-and-desist proceedings, making findings, and imposing a cease-and-desist order pursuant to Section 8A of the 1933 Act, directing USCF and USO to cease and desist from committing or causing any violations of Section 17(a)(3) of the 1933 Act, 15 U.S.C. § 77q(a)(3) (the “SEC Order”). In the SEC Order, the SEC made findings that, from April 24, 2020 to May 21, 2020, USCF and USO violated Section 17(a)(3) of 1933 Act, which provides that it is “unlawful for any person in the offer or sale of any securities to engage in any transaction, practice, or course of business which operates or would operate as a fraud or deceit upon the purchaser.” USCF and USO consented to entry of the SEC Order without admitting or denying the findings contained therein, except as to jurisdiction.

Separately, on November 8, 2021, acting pursuant to an offer of settlement submitted by USCF, the CFTC issued an order instituting cease-and-desist proceedings, making findings, and imposing a cease-and-desist order pursuant to Section 6(c) and (d) of the CEA, directing USCF to cease and desist from committing or causing any violations of Section 4o(1)(B) of the CEA, 7 U.S.C. § 6o(1) (B),

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and CFTC Regulation 4.41(a)(2), 17 C.F.R. § 4.41(a)(2) (the “CFTC Order”). In the CFTC Order, the CFTC made findings that, from on or about April 22, 2020 to June 12, 2020, USCF violated Section 4o(1)(B) of the CEA and CFTC Regulation 4.41(a)(2), which make it unlawful for any commodity pool operator (“CPO”) to engage in “any transaction, practice, or course of business which operates as a fraud or deceit upon any client or participant or prospective client or participant” and prohibit a CPO from advertising in a manner which “operates as a fraud or deceit upon any client or participant or prospective client or participant,” respectively. USCF consented to entry of the CFTC Order without admitting or denying the findings contained therein, except as to jurisdiction.

Pursuant to the SEC Order and the CFTC Order, in addition to the command to cease and desist from committing or causing any violations of Section 17(a)(3) of the 1933 Act, Section 4o(1)(B) of the CEA, and CFTC Regulation 4.14(a)(2), civil monetary penalties totaling two million five hundred thousand dollars ($2,500,000) in the aggregate were required to be paid to the SEC and CFTC, of which one million two hundred fifty thousand dollars ($1,250,000) was paid by USCF to each of the SEC and the CFTC, respectively, pursuant to the offsets permitted under the orders.

In re: United States Oil Fund, LP Securities Litigation

On June 19, 2020, USCF, USO, John P. Love, and Stuart P. Crumbaugh were named as defendants in a putative class action filed by purported shareholder Robert Lucas (the “Lucas Class Action”). The Court thereafter consolidated the Lucas Class Action with two related putative class actions filed on July 31, 2020 and August 13, 2020, and appointed a lead plaintiff. The consolidated class action is pending in the U.S. District Court for the Southern District of New York under the caption In re: United States Oil Fund, LP Securities Litigation, Civil Action No. 1:20-cv-04740.

On November 30, 2020, the lead plaintiff filed an amended complaint (the “Amended Lucas Class Complaint”). The Amended Lucas Class Complaint asserts claims under the 1933 Act, the Exchange Act, and Rule 10b-5. The Amended Lucas Class Complaint challenges statements in registration statements that became effective on February 25, 2020 and March 23, 2020 as well as subsequent public statements through April 2020 concerning certain extraordinary market conditions and the attendant risks that caused the demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The Amended Lucas Class Complaint purports to have been brought by an investor in USO on behalf of a class of similarly-situated shareholders who purchased USO securities between February 25, 2020 and April 28, 2020 and pursuant to the challenged registration statements. The Amended Lucas Class Complaint seeks to certify a class and to award the class compensatory damages at an amount to be determined at trial as well as costs and attorney’s fees. The Amended Lucas Class Complaint named as defendants USCF, USO, John P. Love, Stuart P. Crumbaugh, Nicholas D. Gerber, Andrew F Ngim, Robert L. Nguyen, Peter M. Robinson, Gordon L. Ellis, and Malcolm R. Fobes III, as well as the marketing agent, ALPS Distributors, Inc., and the Authorized Participants: ABN Amro, BNP Paribas Securities Corporation, Citadel Securities LLC, Citigroup Global Markets, Inc., Credit Suisse Securities USA LLC, Deutsche Bank Securities Inc., Goldman Sachs & Company, J.P. Morgan Securities Inc., Merrill Lynch Professional Clearing Corporation, Morgan Stanley & Company Inc., Nomura Securities International Inc., RBC Capital Markets LLC, SG Americas Securities LLC, UBS Securities LLC, and Virtu Financial BD LLC.

The lead plaintiff filed a notice of voluntary dismissal of its claims against BNP Paribas Securities Corporation, Citadel Securities LLC, Citigroup Global Markets Inc., Credit Suisse Securities USA LLC, Deutsche Bank Securities Inc., Morgan Stanley & Company, Inc., Nomura Securities International, Inc., RBC Capital Markets, LLC, SG Americas Securities LLC, and UBS Securities LLC.

The remaining defendants in In re: United States Oil Fund, LP Securities Litigation filed a motion to dismiss the claims in January 2021. On September 29, 2025, the Court granted the defendants’ motion to dismiss the class action complaint in its entirety without prejudice and granting plaintiff leave to move to amend the complaint by November 26, 2025. USCF, USO, and the individual defendants intend to continue vigorously contesting any such claims.

Wang Class Action

On July 10, 2020, purported shareholder Momo Wang filed a putative class action complaint, individually and on behalf of others similarly situated, against defendants USO, USCF, John P. Love, Stuart P. Crumbaugh, Nicholas D. Gerber, Andrew F Ngim, Robert L. Nguyen, Peter M. Robinson, Gordon L. Ellis, Malcolm R. Fobes, III, ABN Amro, BNP Paribas Securities Corp., Citadel Securities LLC, Citigroup Global Markets Inc., Credit Suisse Securities USA LLC, Deutsche Bank Securities Inc., Goldman Sachs & Company, JP Morgan Securities Inc., Merrill Lynch Professional Clearing Corp., Morgan Stanley & Company Inc., Nomura Securities International Inc., RBC Capital Markets LLC, SG Americas Securities LLC, UBS Securities LLC, and Virtu Financial BD LLC, in the U.S. District Court for the Northern District of California as Civil Action No. 3:20-cv-4596 (the “Wang Class Action”).

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The Wang Class Action asserted federal securities claims under the 1933 Act, challenging disclosures in a March 19, 2020 registration statement. It alleged that the defendants failed to disclose to investors in USO certain extraordinary market conditions and the attendant risks that caused the demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The Wang Class Action was voluntarily dismissed on August 4, 2020.

Mehan Action

On August 10, 2020, purported shareholder Darshan Mehan filed a derivative action on behalf of nominal defendant USO, against defendants USCF, John P. Love, Stuart P. Crumbaugh, Nicholas D. Gerber, Andrew F Ngim, Robert L. Nguyen, Peter M. Robinson, Gordon L. Ellis, and Malcolm R. Fobes, III (the “Mehan Action”). The action is pending in the Superior Court of the State of California for the County of Alameda as Case No. RG20070732.

The Mehan Action alleges that the defendants breached their fiduciary duties to USO and failed to act in good faith in connection with a March 19, 2020 registration statement and offering and disclosures regarding certain extraordinary market conditions that caused demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The complaint seeks, on behalf of USO, compensatory damages, restitution, equitable relief, attorney’s fees, and costs. All proceedings in the Mehan Action are stayed pending final disposition of the motion(s) to dismiss in In re: United States Oil Fund, LP Securities Litigation.

USCF, USO, and the other defendants intend to vigorously contest such claims.

In re United States Oil Fund, LP Derivative Litigation

On August 27, 2020, purported shareholders Michael Cantrell and AML Pharm. Inc. DBA Golden International filed two separate derivative actions on behalf of nominal defendant USO, against defendants USCF, John P. Love, Stuart P. Crumbaugh, Andrew F Ngim, Gordon L. Ellis, Malcolm R. Fobes, III, Nicholas D. Gerber, Robert L. Nguyen, and Peter M. Robinson in the U.S. District Court for the Southern District of New York at Civil Action No. 1:20-cv-06974 (the “Cantrell Action”) and Civil Action No. 1:20-cv-06981 (the “AML Action”), respectively.

The complaints in the Cantrell and AML Actions are nearly identical. They each allege violations of Sections 10(b), 20(a), and 21D of the Exchange Act, Rule 10b-5 thereunder, and common law claims of breach of fiduciary duties, unjust enrichment, abuse of control, gross mismanagement, and waste of corporate assets. These allegations stem from USO’s disclosures and defendants’ alleged actions in light of the extraordinary market conditions in 2020 that caused demand for oil to fall precipitously, including the COVID-19 global pandemic and the Saudi Arabia-Russia oil price war. The complaints seek, on behalf of USO, compensatory damages, restitution, equitable relief, attorney’s fees, and costs. The plaintiffs in the Cantrell and AML Actions have marked their actions as related to the Lucas Class Action.

The Court consolidated the Cantrell and AML Actions under the caption In re United States Oil Fund, LP Derivative Litigation, Civil Action No. 1:20-cv-06974 and appointed co-lead counsel. All proceedings in In re United States Oil Fund, LP Derivative Litigation are stayed pending final disposition of the motion(s) to dismiss in In re: United States Oil Fund, LP Securities Litigation.

USCF, USO, and the other defendants intend to vigorously contest the claims in In re United States Oil Fund, LP Derivative Litigation.

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Item 1A. Risk Factors.

There have been no material changes to the risk factors previously disclosed in USO’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed on February 28, 2025 (the “Form 10-K”), except as follows:

The impact of changes in U.S. federal income tax laws on USO is uncertain.

In general, legislative or other actions relating to U.S. federal income taxes could have a negative effect on USO or its investors. Matters pertaining to U.S. federal income taxation are constantly under review by persons involved in the legislative process and by the IRS and the U.S. Treasury Department. The Trump Administration has proposed significant changes to the Code and existing U.S. federal income tax regulations and there are a number of proposals in Congress that, if enacted, would similarly modify the Code. The likelihood of any such legislation being enacted is uncertain, but new legislation and any U.S. Treasury regulations, administrative interpretations or court decisions interpreting such legislation could result in adverse tax consequences to USO and its investors. Investors are urged to consult with their tax advisor with respect to the status of legislative, regulatory or administrative developments and proposals and their potential effect on an investment in USO shares.

As inflation increases, the present value of USO’s assets may decline.

Inflation is a general increase in the overall price level of goods and services in the economy. The United States Federal Reserve has a stated goal of maintaining a two percent increase in inflation over the long run, as measured by the annual change in the price index for personal consumption expenditures.

Following the COVID-19 pandemic, the United States experienced inflation above the Federal Reserve’s stated two percent goal. Other world economies similarly experienced elevated inflation rates. The Federal Reserve increased interest rates and successfully reduced inflation so that it is close to the stated two percent goal. As a result, in 2024, the Federal Reserve began reducing interest rates. However, the rate of inflation in the United States is still above the stated two percent goal. Inflation has the effect of eroding the value of cash or bonds. In a high inflation environment, the value of USO’s cash and Treasury investments may decline.

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Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

(a) | None.

(b) | Not applicable.

(c) | USO does not purchase shares directly from its shareholders. In connection with its redemption of baskets held by Authorized Participants, USO redeemed 175 baskets (comprising 17,500,000 shares) during the third quarter of the year ending December 31, 2025. The following table summarizes the redemptions by Authorized Participants during the three months ended September 30, 2025:

Issuer Purchases of Equity Securities

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​ | ​ | ​ | ​ | ​ | ​
​ |  | Total |  | ​ | ​
​ | ​ | Number of | ​ | ​ | ​
​ | ​ | Shares | ​ | Average Price Per
Period | ​ | Redeemed | ​ | Share
7/1/25 to 7/31/25 |  | 8,900,000 | ​ | $ | 76.94
8/1/25 to 8/31/25 |  | 4,400,000 | ​ | $ | 74.00
9/1/25 to 9/30/25 |  | 4,200,000 | ​ | $ | 74.04
Total |  | 17,500,000 | ​ |  | ​

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Item 3. Defaults Upon Senior Securities.

Not applicable.

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Item 4. Mine Safety Disclosures.

Not applicable.

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Item 5. Other Information.

No officers or directors of the Company have adopted, modified or terminated trading plans under either a Rule 10b5-1 or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-K of the Securities Act of 1933) for the three-month period ended September 30, 2025.

Monthly Account Statements

Pursuant to the requirement under Rule 4.22 under the Commodity Exchange Act, each month USO publishes an account statement for its shareholders, which includes a Statement of Income (Loss) and a Statement of Changes in Net Asset Value. The account statement is furnished to the SEC on a current report on Form 8-K pursuant to Section 13 or 15(d) of the Exchange Act and posted each month on USO’s website at www.uscfinvestments.com.

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Item 6. Exhibits.

Listed below are the exhibits, which are filed as part of this quarterly report on Form 10-Q (according to the number assigned to them in Item 601 of Regulation S-K):

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| ​ |
Exhibit Number |  | Description of Document
31.1(1) | ​ | Certification by Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2(1) | ​ | Certification by Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1(1) | ​ | Certification by Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2(1) | ​ | Certification by Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS | ​ | XBRL Instance Document.
101.SCH | ​ | XBRL Taxonomy Extension Schema.
101.CAL | ​ | XBRL Taxonomy Extension Calculation Linkbase.
101.DEF | ​ | XBRL Taxonomy Extension Definition Linkbase.
101.LAB | ​ | XBRL Taxonomy Extension Label Linkbase.
101.PRE | ​ | XBRL Taxonomy Extension Presentation Linkbase.
104 | ​ | Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

(1) | Filed herewith.

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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 thereunto duly authorized.

United States Oil Fund, LP (Registrant)

By: United States Commodity Funds LLC, its general partner

​

By: | /s/ John P. Love | ​
​ | John P. Love | ​
​ | President and Chief Executive Officer | ​
​ | (Principal executive officer) | ​
​ | ​ | ​
Date: November 7, 2025 | ​
​ | ​
By: | /s/ Stuart P. Crumbaugh | ​
​ | Stuart P. Crumbaugh | ​
​ | Chief Financial Officer | ​
​ | (Principal financial and accounting officer) | ​
​ | ​ | ​
Date: November 7, 2025 | ​

​

​

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