0 0 0001376227--12-31 2021 Q1 false DE 0001376227 ung:PriorToReverseSplitMember 2018-01-01 2018-01-04 0001376227 us-gaap:LimitedPartnerMember 2021-03-31 0001376227 us-gaap:GeneralPartnerMember 2021-03-31 0001376227 us-gaap:LimitedPartnerMember 2020-12-31 0001376227 us-gaap:LimitedPartnerMember 2020-03-31 0001376227 us-gaap:LimitedPartnerMember 2019-12-31 0001376227 ung:FundTrustsMember 2021-01-01 2021-12-31 0001376227 2021-01-01 2021-12-31 0001376227 us-gaap:LimitedPartnerMember 2021-01-01 2021-03-31 0001376227 us-gaap:LimitedPartnerMember 2020-01-01 2020-03-31 0001376227 ung:UnitedStatesContractsMember us-gaap:FairValueInputsLevel3Member us-gaap:ForeignExchangeFutureMember 2021-03-31 0001376227 ung:UnitedStatesContractsMember us-gaap:FairValueInputsLevel2Member us-gaap:ForeignExchangeFutureMember 2021-03-31 0001376227 ung:UnitedStatesContractsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignExchangeFutureMember 2021-03-31 0001376227 us-gaap:FairValueInputsLevel3Member us-gaap:ShortTermInvestmentsMember 2021-03-31 0001376227 us-gaap:FairValueInputsLevel2Member us-gaap:ShortTermInvestmentsMember 2021-03-31 0001376227 us-gaap:FairValueInputsLevel1Member us-gaap:ShortTermInvestmentsMember 2021-03-31 0001376227 ung:UnitedStatesContractsMember us-gaap:ForeignExchangeFutureMember 2021-03-31 0001376227 us-gaap:ShortTermInvestmentsMember 2021-03-31 0001376227 ung:UnitedStatesContractsMember us-gaap:FairValueInputsLevel1Member us-gaap:ForeignExchangeFutureMember 2020-12-31 0001376227 us-gaap:FairValueInputsLevel1Member us-gaap:ShortTermInvestmentsMember 2020-12-31 0001376227 ung:UnitedStatesContractsMember us-gaap:ForeignExchangeFutureMember 2020-12-31 0001376227 us-gaap:ShortTermInvestmentsMember 2020-12-31 0001376227 ung:UsTreasuryBillsOneMember us-gaap:USTreasurySecuritiesMember us-gaap:CashEquivalentsMember 2021-01-01 2021-03-31 0001376227 country:US ung:NYMEXNaturalGasFuturesContractsMember ung:OpenCommodityFuturesContractsLongMember 2021-03-31 0001376227 ung:RbcU.s.GovernmentMoneyMarketFundInstitutionalSharesMember us-gaap:MoneyMarketFundsMember us-gaap:CashEquivalentsMember 2021-03-31 0001376227 ung:MorganStanleyInstitutionalLiquidityFundsGovernmentPortfolioInstitutionalSharesMember us-gaap:MoneyMarketFundsMember us-gaap:CashEquivalentsMember 2021-03-31 0001376227 ung:GoldmanSachsFinancialSquareGovernmentFundInstitutionalSharesMember us-gaap:MoneyMarketFundsMember us-gaap:CashEquivalentsMember 2021-03-31 0001376227 us-gaap:CommodityContractMember us-gaap:FutureMember 2021-01-01 2021-03-31 0001376227 us-gaap:CommodityContractMember us-gaap:FutureMember 2020-01-01 2020-03-31 0001376227 ung:TradesNecessitatedByCreationAndRedemptionActivityMember 2021-01-01 2021-03-31 0001376227 ung:RebalancingInvestmentsTransactionMember 2021-01-01 2021-03-31 0001376227 ung:TradesNecessitatedByCreationAndRedemptionActivityMember 2020-01-01 2020-03-31 0001376227 ung:RebalancingInvestmentsTransactionMember 2020-01-01 2020-03-31 0001376227 ung:UsTreasuryBillsOneMember us-gaap:USTreasurySecuritiesMember us-gaap:CashEquivalentsMember 2021-03-31 0001376227 2007-04-01 2007-04-18 0001376227 ung:UnitedStatesOilFundLimitedPartnershipMember 2021-01-01 2021-03-31 0001376227 ung:UnitedStatesOilFundLimitedPartnershipMember 2020-01-01 2020-03-31 0001376227 ung:NymexNaturalGasFuturesNgMay2021ContractsExpiringApril2021Member country:US ung:OpenCommodityFuturesContractsLongMember 2021-03-31 0001376227 us-gaap:MoneyMarketFundsMember us-gaap:CashEquivalentsMember 2021-03-31 0001376227 ung:RbcU.s.GovernmentMoneyMarketFundInstitutionalSharesMember us-gaap:MoneyMarketFundsMember 2021-03-31 0001376227 ung:MorganStanleyInstitutionalLiquidityFundsGovernmentPortfolioInstitutionalSharesMember us-gaap:MoneyMarketFundsMember 2021-03-31 0001376227 ung:GoldmanSachsFinancialSquareGovernmentFundInstitutionalSharesMember us-gaap:MoneyMarketFundsMember 2021-03-31 0001376227 us-gaap:MoneyMarketFundsMember 2021-03-31 0001376227 ung:UsTreasuryBillsOneMember 2021-03-31 0001376227 ung:TradesNecessitatedByCreationAndRedemptionActivityMember 2021-03-31 0001376227 ung:RebalancingInvestmentsTransactionMember 2021-03-31 0001376227 ung:TradesNecessitatedByCreationAndRedemptionActivityMember 2020-03-31 0001376227 ung:RebalancingInvestmentsTransactionMember 2020-03-31 0001376227 2007-04-01 2007-04-30 0001376227 ung:RedemptionBasketsMember 2021-03-31 0001376227 ung:CreationBasketsMember 2021-03-31 0001376227 2019-12-31 0001376227 ung:FollowingReverseSplitMember 2018-01-04 0001376227 ung:PriorToReverseSplitMember 2007-04-18 0001376227 2020-01-01 2020-03-31 0001376227 2018-01-01 2018-01-04 0001376227 srt:MinimumMember 2021-01-01 2021-03-31 0001376227 srt:MaximumMember 2021-01-01 2021-03-31 0001376227 2020-03-31 0001376227 2021-03-31 0001376227 2020-12-31 0001376227 ung:PriorToReverseSplitMember 2018-01-04 0001376227 srt:MinimumMember ung:GroupFourMember ung:MarketingAgreementMember 2021-03-31 0001376227 ung:GroupThreeMember ung:MarketingAgreementMember 2021-03-31 0001376227 ung:GroupThreeMember ung:MarketingAgreementMember 2021-01-01 2021-03-31 0001376227 ung:GroupFourMember ung:MarketingAgreementMember 2021-01-01 2021-03-31 0001376227 us-gaap:LicensingAgreementsMember 2021-01-01 2021-03-31 0001376227 ung:MarketingAgreementMember 2021-01-01 2021-03-31 0001376227 ung:UnitedStatesNaturalGasMember 2021-01-01 2021-03-31 0001376227 ung:UnitedStatesNaturalGasMember 2021-03-31 0001376227 2021-04-26 0001376227 2021-01-01 2021-03-31 xbrli:shares iso4217:USD xbrli:pure iso4217:USD ung:item iso4217:USD xbrli:shares ung:contract

Table of Contents

​

​

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 March 31, 2021.

​

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: 001-33096

United States Natural Gas Fund, LP

(Exact name of registrant as specified in its charter)

​

Delaware |  | 20-5576760
(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 Natural Gas Fund, LP | ​ | UNG | ​ | 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 25,684,588 outstanding shares as of April 26, 2021.

​

​

​

Table of Contents

United States Natural Gas Fund, LP

Table of Contents

​

| ​ |
|  | Page
Part I. FINANCIAL INFORMATION | ​ |
​ | ​ | ​
Item I. Condensed Financial Statements. | ​ | 1
​ | ​ | ​
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations. | ​ | 17
​ | ​ | ​
Item 3. Quantitative and Qualitative Disclosures About Market Risk. | ​ | 35
​ | ​ | ​
Item 4. Controls and Procedures. | ​ | 36
​ | ​ | ​
Part II. OTHER INFORMATION | ​ | ​
​ | ​ | ​
Item 1. Legal Proceedings. | ​ | 37
​ | ​ | ​
Item 1A. Risk Factors. | ​ | 39
​ | ​ | ​
Items 2. Unregistered Sales of Equity Securities and Use of Proceeds. | ​ | 39
​ | ​ | ​
Item 3. Defaults Upon Senior Securities. | ​ | 39
​ | ​ | ​
Item 4. Mine Safety Disclosures. | ​ | 39
​ | ​ | ​
Item 5. Other Information. | ​ | 39
​ | ​ | ​
Item 6. Exhibits. | ​ | 40

​

​

​

​

Table of Contents

Part I. FINANCIAL INFORMATION

Item 1. Condensed Financial Statements.

Index to Condensed Financial Statements

​

Documents |  | Page
Condensed Statements of Financial Condition at March 31, 2021 (Unaudited) and December 31, 2020 | ​ | 2
​ | ​ | ​
Condensed Schedule of Investments (Unaudited) at March 31, 2021 | ​ | 3
​ | ​ | ​
Condensed Statements of Operations (Unaudited) for the three months ended March 31, 2021 and 2020 | ​ | 4
​ | ​ | ​
Condensed Statements of Changes in Partners’ Capital (Unaudited) for the three months ended March 31, 2021 and 2020 | ​ | 5
​ | ​ | ​
Condensed Statements of Cash Flows (Unaudited) for the three months ended March 31, 2021 and 2020 | ​ | 6
​ | ​ | ​
Notes to (Unaudited) Condensed Financial Statements for the period ended March 31, 2021 | ​ | 7

​

​

​

1

Table of Contents

United States Natural Gas Fund, LP

Condensed Statements of Financial Condition

At March 31, 2021 (Unaudited) and December 31, 2020

​

​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, 2021 |  | December 31, 2020
Assets |  | ​ |  |  | ​ |
Cash and cash equivalents (at cost $249,255,606 and $342,942,967, respectively) (Notes 2 and 5) | ​ | $ | 249,255,606 | ​ | $ | 342,942,967
Equity in trading accounts: | ​ |  |  | ​ |  |
Cash and cash equivalents (at cost $18,801,522 and $97,539,600, respectively) | ​ |  | 18,801,522 | ​ |  | 97,539,600
Unrealized gain (loss) on open commodity futures contracts | ​ |  | 6,326,190 | ​ |  | (14,454,899)
Dividends receivable | ​ |  | 4,644 | ​ |  | 186
Interest receivable | ​ |  | 374 | ​ |  | 14,186
Prepaid insurance* | ​ | ​ | 57,603 | ​ | ​ | 13,584
Prepaid registration fees | ​ |  | 22,290 | ​ |  | 103,290
ETF transaction fees receivable | ​ |  | — | ​ |  | 1,000
​ | ​ | ​ | ​ | ​ | ​ | ​
Total Assets | ​ | $ | 274,468,229 | ​ | $ | 426,159,914
​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities and Partners’ Capital | ​ |  |  | ​ |  |
Payable for shares redeemed | ​ | $ | — | ​ | $ | 10,526,931
General Partner management fees payable (Note 3) | ​ | ​ | 150,051 | ​ | ​ | 212,102
Professional fees payable | ​ |  | 415,282 | ​ |  | 664,001
Brokerage commissions payable | ​ |  | 140,806 | ​ |  | 143,993
Directors’ fees payable* | ​ |  | 4,929 | ​ |  | 5,567
License fees payable | ​ |  | 8,281 | ​ |  | 10,813
​ | ​ | ​ | ​ | ​ | ​ | ​
Total Liabilities | ​ |  | 719,349 | ​ |  | 11,563,407
​ | ​ | ​ | ​ | ​ | ​ | ​
Commitments and Contingencies (Notes 3, 4 & 5) | ​ |  |  | ​ |  |
​ | ​ | ​ | ​ | ​ | ​ | ​
Partners’ Capital | ​ |  |  | ​ |  |
General Partners | ​ |  | — | ​ |  | —
Limited Partners | ​ |  | 273,748,880 | ​ |  | 414,596,507
Total Partners’ Capital | ​ |  | 273,748,880 | ​ |  | 414,596,507
​ | ​ | ​ | ​ | ​ | ​ | ​
Total Liabilities and Partners’ Capital | ​ | $ | 274,468,229 | ​ | $ | 426,159,914
​ | ​ | ​ | ​ | ​ | ​ | ​
Limited Partners’ shares outstanding | ​ |  | 28,484,588 | ​ |  | 45,084,588
Net asset value per share | ​ | $ | 9.61 | ​ | $ | 9.20
Market value per share | ​ | $ | 9.58 | ​ | $ | 9.20

* Certain prior year amounts have been reclassified for consistency with the current presentation.

See accompanying notes to condensed financial statements.

​

2

Table of Contents

United States Natural Gas Fund, LP

Condensed Schedule of Investments (Unaudited)

At March 31, 2021

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Fair | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Value/Unrealized | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | Gain (Loss) on | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Open | ​ | ​
​ | ​ | Notional | ​ | Number of | ​ | Commodity | ​ | % of Partners'
​ |  | Amount |  | Contracts |  | Contracts |  | Capital
Open Commodity Futures Contracts – Long | ​ |  | ​ | ​ |  | ​ |  | ​ | ​ |
United States Contracts | ​ |  | ​ | ​ |  | ​ |  | ​ | ​ |
NYMEX Natural Gas NG May 2021 contracts, expiring April 2021* | ​ | $ | 267,435,570 | ​ | 10,497 | ​ | $ | 6,326,190 | ​ | 2.31

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Shares/Principal |  | Market |  | % of Partners'
​ | ​ | Amount | ​ | Value | ​ | Capital
Cash Equivalents | ​ |  | ​ | ​ |  | ​ | ​ |
United States Treasury Obligations |  | ​ |  |  | ​ |  |  |
U.S. Treasury Bills: |  | ​ |  |  | ​ |  |  |
0.04%, 5/06/2021 | ​ | $ | 50,000,000 | ​ | $ | 49,998,077 | ​ | 18.26
United States Money Market Funds | ​ |  |  | ​ |  |  |  |
Goldman Sachs Financial Square Government Fund - Institutional Shares, 0.04%# | ​ |  | 1,103,000 | ​ |  | 1,103,000 |  | 0.40
Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares, 0.03%# | ​ |  | 172,900,000 | ​ |  | 172,900,000 |  | 63.16
RBC U.S. Government Money Market Fund - Institutional Shares, 0.03%# | ​ | ​ | 20,040,000 | ​ | ​ | 20,040,000 | ​ | 7.32
Total United States Money Market Funds | ​ | ​ | ​ | ​ |  | 194,043,000 |  | 70.88
Total Cash Equivalents | ​ | ​ | ​ | ​ | $ | 244,041,077 |  | 89.14

# Reflects the 7-day yield at March 31, 2021.

* Collateral amounted to $18,801,522 on open commodity futures contracts.

​

See accompanying notes to condensed financial statements.

​

3

Table of Contents

United States Natural Gas Fund, LP

Condensed Statements of Operations (Unaudited)

For the three months ended March 31, 2021 and 2020

​

​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three months ended |  | Three months ended
​ | ​ | March 31, 2021 | ​ | March 31, 2020
Income |  | ​ |  | ​ | ​ |
Gain (loss) on trading of commodity futures contracts: |  | ​ |  | ​ | ​ |
Realized gain (loss) on closed commodity futures contracts | ​ | $ | 8,956,980 | ​ | $ | (124,698,620)
Change in unrealized gain (loss) on open commodity futures contracts | ​ |  | 20,781,089 | ​ |  | (8,450,660)
Dividend income | ​ |  | 8,170 | ​ |  | 669,061
Interest income* | ​ |  | 21,859 | ​ |  | 1,077,531
ETF transaction fees | ​ |  | 40,000 | ​ |  | 44,000
Total Income (Loss) | ​ | $ | 29,808,098 | ​ | $ | (131,358,688)
​ | ​ | ​ | ​ | ​ | ​ | ​
Expenses | ​ |  |  | ​ |  |
General Partner management fees (Note 3) | ​ | $ | 520,978 | ​ | $ | 688,156
Professional fees | ​ |  | 125,074 | ​ |  | 159,436
Brokerage commissions | ​ |  | 257,862 | ​ |  | 572,700
Directors’ fees and insurance | ​ |  | 18,891 | ​ |  | 24,503
License fees | ​ |  | 13,024 | ​ |  | 17,204
Registration fees | ​ |  | 81,000 | ​ |  | 68,250
Total Expenses | ​ | $ | 1,016,829 | ​ | $ | 1,530,249
Net Income (Loss) | ​ | $ | 28,791,269 | ​ | $ | (132,888,937)
Net Income (Loss) per limited partner share | ​ | $ | 0.41 | ​ | $ | (4.48)
Net Income (Loss) per weighted average limited partner share | ​ | $ | 0.82 | ​ | $ | (4.20)
Weighted average limited partner shares outstanding | ​ |  | 35,046,810 | ​ |  | 31,657,115

* Interest income does not exceed paid in kind of 5%.

See accompanying notes to condensed financial statements.

​

4

Table of Contents

United States Natural Gas Fund, LP

Condensed Statement of Changes in Partners’ Capital (Unaudited)

For the three months ended March 31, 2021 and 2020

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Limited Partners* | ​
​ | ​ | Three months | ​ | Three months | ​
​ | ​ | ended | ​ | ended | ​
​ |  | March 31, 2021 |  | March 31, 2020 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balances at beginning of period | ​ | $ | 414,596,507 | ​ | $ | 444,573,254 |
Addition of 7,000,000 and 17,100,000 partnership shares, respectively | ​ | ​ | 67,579,718 | ​ |  | 254,737,351 |
Redemption of (23,600,000) and (17,000,000) partnership shares, respectively | ​ | ​ | (237,218,614) | ​ |  | (238,506,716) |
Net income (loss) | ​ | ​ | 28,791,269 | ​ |  | (132,888,937) |
​ | ​ | ​ | ​ | ​ |  | ​ |
Balances at end of period | ​ | $ | 273,748,880 | ​ | $ | 327,914,952 |

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

See accompanying notes to condensed financial statements.

​

5

Table of Contents

United States Natural Gas Fund, LP

Condensed Statements of Cash Flows (Unaudited)

For the three months ended March 31, 2021 and 2020

​

​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three months ended |  | Three months ended
​ | ​ | March 31, 2021 | ​ | March 31, 2020
Cash Flows from Operating Activities: |  | ​ |  |  | ​ |
Net income (loss) | ​ | $ | 28,791,269 | ​ | $ | (132,888,937)
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 | ​ |  | (20,781,089) | ​ |  | 8,450,660
(Increase) decrease in dividends receivable | ​ |  | (4,458) | ​ |  | 37,980
(Increase) decrease in interest receivable | ​ |  | 13,812 | ​ |  | 5,227
(Increase) decrease in prepaid insurance* | ​ | ​ | (44,019) | ​ | ​ | (47,320)
(Increase) decrease in prepaid registration fees | ​ |  | 81,000 | ​ |  | 68,250
(Increase) decrease in ETF transaction fees receivable | ​ |  | 1,000 | ​ |  | 1,000
Increase (decrease) in General Partner management fees payable | ​ |  | (62,051) | ​ |  | (13,746)
Increase (decrease) in professional fees payable | ​ |  | (248,719) | ​ |  | (348,841)
Increase (decrease) in brokerage commissions payable | ​ |  | (3,187) | ​ |  | 6,000
Increase (decrease) in directors’ fees payable* | ​ |  | (638) | ​ |  | 3,326
Increase (decrease) in license fees payable | ​ |  | (2,532) | ​ |  | 3,599
Net cash provided by (used in) operating activities | ​ |  | 7,740,388 | ​ |  | (124,722,802)
​ | ​ | ​ | ​ | ​ | ​ | ​
Cash Flows from Financing Activities: | ​ |  | ​ | ​ |  |
Addition of partnership shares | ​ |  | 67,579,718 | ​ |  | 261,502,775
Redemption of partnership shares | ​ |  | (247,745,545) | ​ |  | (238,506,716)
Net cash provided by (used in) financing activities | ​ |  | (180,165,827) | ​ |  | 22,996,059
​ | ​ | ​ | ​ | ​ | ​ | ​
Net Increase (Decrease) in Cash and Cash Equivalents | ​ |  | (172,425,439) | ​ |  | (101,726,743)
​ | ​ | ​ | ​ | ​ | ​ | ​
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period | ​ |  | 440,482,567 | ​ |  | 458,998,451
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period | ​ | $ | 268,057,128 | ​ | $ | 357,271,708
​ | ​ | ​ | ​ | ​ | ​ | ​
Components of Cash and Cash Equivalents: | ​ |  |  | ​ |  |
Cash and cash equivalents | ​ | $ | 249,255,606 | ​ | $ | 283,950,682
Equity in Trading Accounts: | ​ |  |  | ​ |  |
Cash and cash equivalents | ​ |  | 18,801,522 | ​ |  | 73,321,026
Total Cash, Cash Equivalents and Equity in Trading Accounts | ​ | $ | 268,057,128 | ​ | $ | 357,271,708

* Certain prior year amounts have been reclassified for consistency with the current presentation.

See accompanying notes to condensed financial statements.

​

6

Table of Contents

United States Natural Gas Fund, LP

Notes to Condensed Financial Statements

For the period ended March 31, 2021 (Unaudited)

NOTE 1 — ORGANIZATION AND BUSINESS

The United States Natural Gas Fund, LP (“UNG”) was organized as a limited partnership under the laws of the state of Delaware on September 11, 2006. UNG is a commodity pool that issues limited partnership interests (“shares”) traded on the NYSE Arca, Inc. (the “NYSE Arca”). Prior to November 25, 2008, UNG’s shares traded on the American Stock Exchange (the “AMEX”). UNG will continue in perpetuity, unless terminated sooner upon the occurrence of one or more events as described in its Fifth Amended and Restated Agreement of Limited Partnership dated as of December 15, 2017 (the “LP Agreement"), which grants full management and control to its general partner, United States Commodity Funds LLC ("USCF").

The investment objective of UNG 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 price of natural gas delivered at the Henry Hub, Louisiana, as measured by the daily changes in the price of a specified short-term futures contract called the "Benchmark Futures Contract", plus interest earned on UNG's collateral holdings, less UNG's expenses. The Benchmark Futures Contract is the futures contract on natural gas as traded on the New York Mercantile Exchange (the “NYMEX”) that is the near month contract to expire, except when the near month contract is within two weeks of expiration, in which case it will be measured by the futures contract that is the next month contract to expire.

UNG seeks to achieve its investment objective by investing primarily in futures contracts for natural gas that are traded on the NYMEX, ICE Futures Europe and ICE Futures U.S. (together, "ICE Futures”) or other U.S. and foreign exchanges (collectively, “Futures Contracts”) and to a lesser extent, in order to comply with regulatory requirements or in view of market conditions, other natural gas-related investments such as cash settled options on Futures Contracts, forward contracts for natural gas, cleared swap contracts, and non-exchange traded (“over-the-counter “ or ”OTC”) transactions that are based on the price of natural gas, crude oil and other petroleum-based fuels, as well as futures contracts for crude oil, heating oil, gasoline, and other petroleum-based fuels, Futures Contracts and indices based on the foregoing (collectively, “Other Natural Gas-Related Investments”). Market conditions that USCF currently anticipates could cause UNG to invest in Other Natural Gas-Related Investments include those allowing UNG to obtain greater liquidity or to execute transactions with more favorable pricing. For convenience and unless otherwise specified, Futures Contracts and Other Natural Gas-Related Investments collectively are referred to as “Natural Gas Interests” in the notes to the financial statements. As of March 31, 2021, UNG held 10,497 UNG Futures May 2021 Contracts traded on the NYMEX and did not hold any Natural Gas Futures Contracts traded on the ICE Futures US.

In addition, USCF believes that market arbitrage opportunities will cause daily changes in UNG's share price on the NYSE Arca on a percentage basis to closely track daily changes in UNG's per share NAV on a percentage basis. USCF further believes that the daily changes in prices of the Benchmark Futures Contract have historically closely tracked the daily changes in spot prices of natural gas. USCF believes that the net effect of these relationships will be that the daily changes in the price of UNG's shares on the NYSE Arca on a percentage basis will closely track the daily changes in the spot price of natural gas on a percentage basis less UNG's expenses.

Specifically, UNG seeks to achieve its investment objective by investing so that the average daily percentage change in UNG'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 Futures Contract over the same period.

Investors should be aware that UNG's investment objective is not for its NAV or market price of shares to equal, in dollar terms, the spot price of natural gas or any particular futures contract based on natural gas, nor is UNG'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 the total return on an investment in UNG's shares during the past year relative to a hypothetical direct investment in natural gas and, in the future, it is likely that the relationship between the market price of UNG's shares and changes in the spot prices of natural gas will continue to be so impacted by contango and backwardation. (It is important to note that the disclosure above ignores the potential costs associated with physically owning and storing natural gas, which could be substantial.)

7

Table of Contents

UNG commenced investment operations on April 18, 2007 and has a fiscal year ending on December 31. USCF is a member of the National Futures Association (the “NFA”) and became registered as a commodity pool operator 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 Oil Fund, LP (“USO”), the United States 12 Month Oil Fund, LP (“USL”) and the United States Gasoline Fund, LP (“UGA”), which listed their limited partnership shares on the AMEX under the ticker symbols “USO” on April 10, 2006, “USL” on December 6, 2007 and “UGA” on February 26, 2008, respectively. As a result of the acquisition of the AMEX by NYSE Euronext, each of USO’s, USL’s and UGA’s shares commenced trading on the NYSE Arca on November 25, 2008. USCF is also the general partner of the United States 12 Month Natural Gas Fund, LP (“UNL”) and the United States Brent Oil Fund, LP (“BNO”), which listed their limited partnership shares on the NYSE Arca under the ticker symbols “UNL” on November 18, 2009 and “BNO” on June 2, 2010, respectively.

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”), the United States Copper Index Fund (“CPER”) and the USCF Crescent Crypto Index Fund (“XBET"). USCI and CPER listed their shares on the NYSE Arca under the ticker symbols "USCI" on August 10, 2010 and "CPER" on November 15, 2011, respectively. A registration statement that had been previously filed for XBET was withdrawn on June 25, 2020.

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

UNG 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 UNG a $1,000 transaction fee for each order placed 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 UNG but rather at market prices quoted on such exchange.

In April 2007, UNG initially registered 30,000,000 shares on Form S-1 with the U.S. Securities and Exchange Commission (the “SEC”). On April 18, 2007, UNG listed its shares on the AMEX under the ticker symbol “UNG” and switched to trading on the NYSE Arca under the same ticker symbol on November 25, 2008. On that day, UNG established its initial per share NAV by setting the price at $50.00 and issued 200,000 shares in exchange for $10,001,000. UNG also commenced investment operations on April 18, 2007, by purchasing Natural Gas Futures Contracts traded on the NYMEX based on natural gas. As of March 31, 2021, UNG had registered a total of 2,280,000,000 shares.

On January 4, 2018, after the close of trading on the NYSE Arca, UNG effected a 1-for-4 reverse share split and post-split shares of UNG began trading on January 5, 2018. As a result of the reverse share split, every four pre-split shares of UNG were automatically exchanged for one post-split share. Immediately prior to the reverse split, there were 97,466,476 shares of UNG issued and outstanding, representing a per share NAV of $5.69. Immediately after the reverse share split, the number of issued and outstanding shares of UNG decreased to 24,366,619, not accounting for fractional shares, and the per share NAV increased to $22.76. In connection with the reverse share split, the CUSIP number for UNG’s shares changed to 912318300. UNG’s ticker symbol, “UNG,” did not change.

The accompanying unaudited condensed 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 condensed financial statements for the interim period.

​

8

Table of Contents

NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

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

Revenue Recognition

Commodity futures contracts, 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 condensed 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 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 condensed financial statements. Changes in the unrealized gains or losses between periods are reflected in the condensed statements of operations. UNG earns income on funds held at the custodian or futures commission merchants (“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

UNG 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, UNG 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. UNG files an income tax return in the U.S. federal jurisdiction and may file income tax returns in various U.S. states. UNG is not subject to income tax return examinations by major taxing authorities for years before 2017. 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 UNG recording a tax liability that reduces net assets. However, UNG’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. UNG 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 March 31, 2021.

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.

UNG 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 UNG’s condensed 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 UNG a $1,000 transaction fee for each order placed to create one or more Creation Baskets or to redeem one or more Redemption Baskets.

9

Table of Contents

Partnership Capital and Allocation of Partnership Income and Losses

Profit or loss shall be allocated among the partners of UNG in proportion to the 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

UNG’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. UNG 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 March 31, 2021.

Offering Costs

Offering costs incurred in connection with the registration of additional shares after the initial registration of shares are borne by UNG. 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 six months or less.

Reclassification

Certain amounts in the accompanying condensed financial statements were reclassified to conform to the current presentation.

Use of Estimates

The preparation of condensed 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 condensed financial statements, and the reported amounts of the revenue and expenses during the reporting period. Actual results may differ from those estimates and assumptions.

Other

On January 4, 2018, after the close of the NYSA Arca, UNG effected a 1-for-4 reverse share split and post-split shares of UNG began trading on January 5, 2018. The unaudited condensed financial information in this quarterly report on Form 10-Q gives effect to the reverse share split and the post-split shares as if they had been completed on January 1, 2018.

The audited financial information and pro forma financial information, as well as the historical financial information as of and for the year ended December 31, 2018, was derived from UNG's historical financial statements. The financial statements in this quarterly report on Form 10-Q are presented in accordance with Accounting Standards Codification 260 for purposes of presenting the 1-for-4 reverse split on historical basis for all periods reported.

​

10

Table of Contents

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 UNG in accordance with the objectives and policies of UNG. In addition, USCF has arranged for one or more third parties to provide administrative, custody, accounting, transfer agency and other necessary services to UNG. For these services, UNG is contractually obligated to pay USCF a fee, which is paid monthly, equal to 0.60% per annum of average daily total net assets of $1,000,000,000 or less and 0.50% per annum of average daily total net assets that are greater than $1,000,000,000.

Ongoing Registration Fees and Other Offering Expenses

UNG 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 three months ended March 31, 2021 and 2020, UNG incurred $81,000 and $68,250 respectively, in registration fees and offering expenses.

Independent Directors’ and Officers’ Expenses

UNG is responsible for paying its portion of the directors’ and officers’ liability insurance for UNG and the Related Public Funds and the fees and expenses of the independent directors who also serve as audit committee members of UNG and the Related Public Funds. UNG 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, 2021 are estimated to be a total of $78,000 for UNG and, in the aggregate for UNG and the Related Public Funds, $1,223,400.

Licensing Fees

As discussed in Note 4 below, UNG entered into a licensing agreement with the NYMEX on April 10, 2006, as amended on October 20, 2011. Pursuant to the agreement, UNG 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 three months ended March 31, 2021 and 2020, UNG incurred $13,024 and $17,204, respectively under this arrangement.

Investor Tax Reporting Cost

The fees and expenses associated with UNG’s audit expenses and tax accounting and reporting requirements are paid by UNG. These costs are estimated to be $750,000 for the year ending December 31, 2021. 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, UNG pays all brokerage fees and other expenses in connection with the operation of UNG, excluding costs and expenses paid by USCF as outlined in Note 4 – Contracts and Agreements below.

​

NOTE 4 — CONTRACTS AND AGREEMENTS

Marketing Agent Agreement

UNG is party to a marketing agent agreement, dated as of April 17, 2007, as amended from time to time, with the Marketing Agent and USCF, whereby the Marketing Agent provides certain marketing services for UNG as outlined in the agreement. The fee of the Marketing Agent, which is borne by USCF, is equal to 0.06% on UNG’s assets up to $3 billion and 0.04% on UNG’s assets in excess of $3 billion. 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 UNG’s offering.

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

11

Table of Contents

Custody, Transfer Agency and Fund Administration and Accounting Services Agreements

USCF engaged The Bank of New York Mellon, a New York corporation authorized to do a banking business (“BNY Mellon”), to provide UNG 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.

Brown Brothers Harriman and Co. (“BBH&Co.”) previously served as the Administrator, Custodian, Transfer Agent and Fund Accounting Agent for UNG and the Related Public Funds prior to BNY Mellon commencing such services on April 1, 2020. Certain fund accounting and fund administration services rendered by BBH&Co. to UNG and the Related Public Funds terminated on May 31, 2020 to allow for the transition to BNY Mellon.

Brokerage and Futures Commission Merchant Agreements

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

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months | ​ | Three months | ​
​ | ​ | ended | ​ | ended | ​
​ | ​ | March 31, 2021 | ​ | March 31, 2020 | ​
Total commissions accrued to brokers | ​ | $ | 257,862 | ​ | $ | 572,700 | ​
Total commissions as annualized percentage of average total net assets |  | ​ | 0.30 | % | ​ | 0.50 | %
Commissions accrued as a result of rebalancing | ​ | $ | 225,188 | ​ | $ | 496,696 | ​
Percentage of commissions accrued as a result of rebalancing | ​ | ​ | 87.33 | % | ​ | 86.73 | %
Commissions accrued as a result of creation and redemption activity | ​ | $ | 32,674 | ​ | $ | 76,004 | ​
Percentage of commissions accrued as a result of creation and redemption activity | ​ |  | 12.67 | % |  | 13.27 | %

​

The decrease in total commissions accrued to brokers for the three months ended March 31, 2021, compared to the three months ended March 31, 2020, was due primarily to a lower number of natural gas futures contracts being held and traded.

NYMEX Licensing Agreement

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

​

12

Table of Contents

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

UNG may engage in the trading of futures contracts, options on futures contracts, cleared swaps and OTC swaps (collectively, “derivatives”). UNG 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.

UNG 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 activities. To reduce the credit risk that arises in connection with OTC swaps, UNG will generally enter into an agreement with each counterparty based on the Master Agreement published by the International Swaps and Derivatives Association, Inc., which provides for the netting of its overall exposure to its counterparty. The Master Agreement is negotiated as between the parties and would address, among other things, the exchange of margin between the parties.

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 UNG 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 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.

A novel strain of coronavirus (COVID-19) outbreak was declared a pandemic by the World Health Organization on March 11, 2020. The situation is evolving with various cities and countries around the world responding in different ways to address the outbreak. There are direct and indirect economic effects developing for various industries and individual companies throughout the world. Management will continue to monitor the impact COVID-19 has on UNG and reflect the consequences as appropriate in UNG's accounting and financial reporting. The recent pandemic spread of the novel coronavirus and related geopolitical events could lead to increased market volatility, disruption to U.S. and world economies and markets and may have significant adverse effects on UNG and its investments.

All of the futures contracts held by UNG through March 31, 2021 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. However, in the future, if UNG were to enter into non-exchange traded contracts, it would be 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. UNG has credit risk under its futures contracts since the sole counterparty to all domestic and foreign futures contracts is the clearinghouse for the exchange on which the relevant contracts are traded. In addition, UNG bears the risk of financial failure by the clearing broker.

13

Table of Contents

UNG’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 UNG’s assets posted with that FCM; however, the majority of UNG’s assets are held in investments in Treasuries, cash and/or cash equivalents with UNG’s custodian and would not be impacted by the insolvency of an FCM. The failure or insolvency of UNG’s custodian, however, could result in a substantial loss of UNG’s assets.

USCF invests a portion of UNG’s cash in money market funds that seek to maintain a stable per share NAV. UNG is exposed to any risk of loss associated with an investment in such money market funds. As of March 31, 2021 and December 31, 2020, UNG held investments in money market funds in the amounts of $194,043,000 and $21,143,000, respectively. UNG also holds cash deposits with its custodian. As of March 31, 2021 and December 31, 2020, UNG held cash deposits and investments in Treasuries in the amounts of $74,014,128 and $419,339,567 respectively, with the custodian and FCMs. Some or all of these amounts may be subject to loss should UNG’s custodian and/or FCMs cease operations.

For derivatives, risks arise from changes in the market value of the contracts. Theoretically, UNG 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, UNG 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.

UNG’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, UNG 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 UNG are reported in its condensed 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.

​

NOTE 6 — FINANCIAL HIGHLIGHTS

The following table presents per share performance data and other supplemental financial data for the three months ended March 31, 2021 and 2020 for the shareholders. This information has been derived from information presented in the condensed financial statements.

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three months ended |  | Three months ended |
​ | ​ | March 31, 2021 |  | March 31, 2020 |
​ | ​ | (Unaudited) | ​ | (Unaudited) | ​
Per Share Operating Performance: |  | ​ |  | ​ | ​ |  | ​
Net asset value, beginning of period | ​ | $ | 9.20 | ​ | $ | 16.91 | ​
Total income (loss) | ​ |  | 0.44 | ​ |  | (4.43) | ​
Total expenses | ​ |  | (0.03) | ​ |  | (0.05) | ​
Net increase (decrease) in net asset value | ​ |  | 0.41 | ​ |  | (4.48) | ​
Net asset value, end of period | ​ | $ | 9.61 | ​ | $ | 12.43 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Return | ​ |  | 4.46 | % |  | (26.49) | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ratios to Average Net Assets | ​ |  |  | ​ |  |  | ​
Total income (loss) | ​ |  | 8.46 | % |  | (28.48) | %
Management fees* | ​ |  | 0.60 | % |  | 0.60 | %
Total expenses excluding management fees* | ​ |  | 0.57 | % |  | 0.73 | %
Net income (loss) | ​ |  | 8.18 | % |  | (28.81) | %

* 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 UNG.

​

14

Table of Contents

NOTE 7 — FAIR VALUE OF FINANCIAL INSTRUMENTS

UNG 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. The changes to past practice resulting from the application of ASC 820 relate to the definition of fair value, the methods used to measure fair value, and the expanded 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 UNG (observable inputs) and (2) UNG’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.

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 UNG's securities at March 31, 2021 using the fair value hierarchy:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
At March 31, 2021 |  | Total |  | Level I |  | Level II |  | Level III
Short-Term Investments | ​ | $ | 244,041,077 | ​ | $ | 244,041,077 | ​ | $ | — | ​ | $ | —
Exchange-Traded Futures Contracts | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
United States Contracts | ​ |  | 6,326,190 | ​ |  | 6,326,190 | ​ |  | — | ​ |  | —

​

The following table summarizes the valuation of UNG's securities at December 31, 2020 using the fair value hierarchy:

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
At December 31, 2020 |  | Total |  | Level I |  | Level II |  | Level III
Short-Term Investments | ​ | $ | 21,143,000 | ​ | $ | 21,143,000 | ​ | $ | — | ​ | $ | —
Exchange-Traded Futures Contracts | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
United States Contracts | ​ |  | (14,454,899) | ​ |  | (14,454,899) | ​ |  | — | ​ |  | —

​

Effective January 1, 2009, UNG 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.

15

Table of Contents

The Effect of Derivative Instruments on the Condensed Statements of Operations

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | For the three months ended | ​ | For the three months ended
​ | ​ | ​ | ​ | March 31, 2021 | ​ | March 31, 2020
​ | ​ | ​ | ​ | ​ | ​ | ​ | Change in | ​ | ​ | ​ | ​ | Change in
​ | ​ | Location of | ​ | Realized | ​ | Unrealized | ​ | Realized | ​ | Unrealized
Derivatives not | ​ | Gain (Loss) | ​ | gain (Loss) | ​ | Gain (Loss) | ​ | Gain (Loss) | ​ | Gain (Loss)
Accounted for | ​ | on Derivatives | ​ | on Derivatives | ​ | on Derivatives | ​ | in Derivatives | ​ | on Derivatives
as 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 positions | ​ | $ | 8,956,980 |  | ​ | ​ | ​ | $ | (124,698,620) |  | ​ |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Change in unrealized gain (loss) on open positions | ​ | ​ | ​ | ​ | $ | 20,781,089 | ​ | ​ | ​ | ​ | $ | (8,450,660)

​

​

​

NOTE 8 — RECENT ACCOUNTING PRONOUNCEMENTS

In August 2018, the FASB issued Accounting Standards Update (“ASU”) No. 2018-13, which changes certain fair value measurement disclosure requirements. The new ASU, in addition to other modifications and additions, removes the requirement to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, and UNG’s policy for the timing of transfers between levels. The amendments are effective for financial statements issued for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. UNG has evaluated the implications of certain provisions of the ASU and has determined that there will be no material impacts to the financial statements.

​

NOTE 9 — SUBSEQUENT EVENTS

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

​

​

16

Table of Contents

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

The following discussion should be read in conjunction with the condensed financial statements and the notes thereto of the United States Natural Gas Fund, LP (“UNG”) 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 regarding the plans and objectives of management for future operations. This information may involve known and unknown risks, uncertainties and other factors that may cause UNG’s actual results, performance or achievements to be materially different from future results, performance or achievements expressed or implied by any forward-looking statements. UNG believes these factors include, but are not limited to, the following: changes in inflation in the United States; movements in U.S. and foreign currencies; market volatility in the crude oil markets and futures markets, in part attributable to the COVID-19 pandemic, disputes among oil-producing countries over the potential limits on the production of crude oil, changes in demand for crude oil and storage for crude oil; uncertainties associated with the impact from the coronavirus (COVID-19) pandemic, including: its impact on the global and U.S. capital markets and the global and U.S. economy, the length and duration of the COVID-19 outbreak in the United States as well as worldwide and the magnitude of the economic impact of that outbreak, the effect of the COVID-19 pandemic on UNG’s business prospects, including its ability to achieve its objectives, and the effect of the disruptions caused by the COVID-19 pandemic on our ability to continue to effectively manage our business. Forward-looking statements, which involve assumptions and describe UNG’s future plans, strategies and expectations, are generally identifiable by use of the words “may,” “will,” “should,” “expect,” “anticipate,” “estimate,” “believe,” “intend” or “project,” the negative of these words, other variations on these words or comparable terminology. These forward-looking statements are based on assumptions that may be incorrect, and UNG cannot assure investors that the projections included in these forward-looking statements will come to pass. UNG’s actual results could differ materially from those expressed or implied by the forward-looking statements as a result of various factors.

UNG 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 UNG assumes no obligation to update any such forward-looking statements. Although UNG 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 UNG may make directly to them or through reports that UNG files in the future with the Securities and Exchange Commission (the “SEC”), including annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K.

Introduction

UNG, 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 UNG is for the daily changes in percentage terms of its shares’ per share NAV to reflect the daily changes, in percentage terms, of the price of natural gas delivered at the Henry Hub, Louisiana, as measured by the daily changes in the price of the futures contract for natural gas traded on the NYMEX that is the near month contract to expire, except when the near month contract is within two weeks of expiration, in which case it will be measured by the futures contract that is the next month contract to expire (the “Benchmark Futures Contract”), plus interest earned on UNG’s collateral holdings, less UNG’s expenses. “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. UNG seeks to achieve its investment objective by investing so that the average daily percentage change in UNG’s NAV for any period of 30 successive valuation days will be within plus/minus ten percent (10)% of the average daily percentage changes in the price of the Benchmark Futures Contract over the same period.

UNG’s investment objective is not for its NAV or market price of shares to equal, in dollar terms, the spot price of natural gas or any particular futures contract based on natural gas, nor is UNG’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 UNG, 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 Natural Gas Futures Contracts (as defined below) and Other Natural Gas-Related Investments (as defined below).

17

Table of Contents

UNG invests primarily in futures contracts for natural gas, crude oil, heating oil, gasoline and other petroleum-based fuels that are traded on the NYMEX, ICE Futures or other U.S. and foreign exchanges (collectively, “Natural Gas Futures Contracts”) and to a lesser extent, in order to comply with regulatory requirements or in view of market conditions, other natural gas-related investments such as cash-settled options on Natural Gas Futures Contracts, forward contracts for natural gas, cleared swap contracts and OTC swaps that are based on the price of natural gas, crude oil and other petroleum-based fuels, Natural Gas Futures Contracts and indices based on the foregoing (collectively, “Other Natural Gas-Related Investments”). For convenience and unless otherwise specified, Natural Gas Futures Contracts and Other Natural Gas-Related Investments collectively are referred to as “Natural Gas Interests” in this quarterly report on Form 10-Q.

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

UNG seeks to achieve its investment objective by investing so that the average daily percentage change in UNG’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 Futures Contract over the same period.

Regulatory Disclosure

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 UNG is not) may hold, own or control. These levels and position limits apply to the futures contracts that UNG invests in to meet its investment objective. In addition to accountability levels and position limits, the NYMEX and ICE Futures 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.

The accountability levels for the Benchmark Futures Contract and other Natural Gas 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 Futures Contract is 6,000 net contracts. In addition, the NYMEX imposes an accountability level for all months of 12,000 net futures contracts for natural gas. In addition, the ICE Futures maintains accountability levels, position limits and monitoring authority for its Henry Hub natural gas contracts. If UNG and the Related Public Funds exceed these accountability levels for investments in the futures contracts for natural gas, the NYMEX and ICE Futures will monitor such exposure and may ask for further information on their activities including the total size of all positions, investment and trading strategy, and the extent of liquidity resources of UNG and the Related Public Funds. If deemed necessary by the NYMEX and/or ICE Futures, UNG could be ordered to reduce its aggregate net futures contracts back to the accountability level. As of March 31, 2021, UNG held 10,497 NYMEX Natural Gas Futures NG contracts and did not hold any Natural Gas Futures Contracts traded on the ICE Futures US. UNG exceeded accountability levels of the NYMEX during the three months ended March 31, 2021, when it held a maximum of 15,966 Natural Gas Futures NG Contracts. UNG did not exceed accountability levels of ICE Futures during the three months ended March 31, 2021. No action was taken by the NYMEX and UNG did not reduce the number of Natural Gas Futures Contracts held as a result.

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. It is unlikely that UNG will run up against such position limits because UNG’s investment strategy is to close out its positions and “roll” from the near month contract to expire to the next month contract during a four-day period beginning two weeks from expiration of the contract. For the three months ended March 31, 2021, UNG did not exceed any position limits imposed by the NYMEX and ICE Futures.

18

Table of Contents

The regulation of commodity interest trading in the United States and other countries is an evolving area of the law. 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”), the CFTC, the NFA, the futures exchanges, clearing organizations and other regulatory bodies.

Futures Contracts and Position Limits

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.

On October 15, 2020, the CFTC approved a final rule that amends the existing federal position limits regime set forth in Part 150 of the CFTC's regulations as well as the framework for exchange-set position limits and exemptions (such final rule, the "Position Limits Rule"). 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. The Position Limits Rule sets position limits for the spot month and non-spot month; however, the non-spot month limits only apply in respect of the agricultural futures contracts that are currently subject to position limits under Part 150 of the CFTC regulations (the "legacy agricultural contracts"). With respect to regulatory oversight, the Position Limits Rule delegates authority to designated contract markets and swap execution facilities to oversee certain aspects of the position limits framework. In addition to setting the federal position limits, the Position Limits Rule also provides several exemptions from such position limits, including an expanded list of enumerated bona fide hedge exemptions and certain spread exemptions. Further, the Position Limits Rule sets forth two alternative processes for pursuing an exemption for non-enumerated hedge positions. Other than for the legacy agricultural contracts, compliance with the limits imposed by the Position Limits Rule will not be required until 2022, except that economically equivalent swaps need not comply with the Position Limits Rule until 2023.

The Benchmark Futures Contract will be subject to position limits under the Position Limits Rule, and UNG's trading does not qualify as an enumerated bona fide hedge. Accordingly, the Position Limits Rule could negatively impact the ability of UNG to meet its investment objective by inhibiting USCF's ability to effectively invest the proceeds from sales of Creation Baskets of UNG in particular amounts and types of its permitted investments.

Until such time as compliance with the Position Limits Rule is required, the regulatory architecture in effect prior to the adoption of the Position Limit Rules will govern transactions in commodities and related derivatives. Under that system, the CFTC enforces federal limits on speculation in the nine legacy agricultural contracts, while futures exchanges establish and enforce position limits and accountability levels for other agricultural products and certain energy products (e.g., oil and natural gas).

Under existing CFTC regulations and the Position Limits Rule, for the purpose of position limits, a market participant is generally required, subject to certain narrow exceptions, to aggregate all positions for which that participant controls the trading decisions with all positions for which that participant has a 10% or greater ownership interest in an account or position, as well as the positions of two or more persons acting pursuant to an express or implied agreement or understanding with that market participant (the “Aggregation Rules”).

OTC Swaps

In October 2015, the Office of the Comptroller of the Currency, the Board of Governors of the Federal Reserve System, the FDIC, the Farm Credit Administration, and the Federal Housing Finance Agency (each an “Agency” and, collectively, the “Agencies”) jointly adopted final rules to establish minimum margin and capital requirements for registered swap dealers, major swap participants, security-based swap dealers, and major security-based swap participants (“Swap Entities”) that are subject to the jurisdiction of one of the Agencies (such entities, “Covered Swap Entities”, and the joint final rules, the “Final Margin Rules”).

19

Table of Contents

The Final Margin Rules will subject non-cleared swaps and non-cleared security-based swaps between Covered Swap Entities and Swap Entities, and between Covered Swap Entities and financial end users that 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 Final Margin Rules), to a mandatory two-way minimum initial margin requirement. The minimum amount of the initial margin required to be posted or collected would be either the amount calculated by the Covered Swap Entity using a standardized schedule set forth as an appendix to the Final Margin Rules, which provides the gross initial margin (as a percentage of total notional exposure) for certain asset classes, or an internal margin model of the Covered Swap Entity conforming to the requirements of the Final Margin Rules that is approved by the Agency having jurisdiction over the particular Covered Swap Entity. The Final Margin Rules specify the types of collateral that may be posted or collected as initial margin for non-cleared swaps and non-cleared security-based swaps with financial end users (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.

The Final Margin Rules require minimum variation margin to be exchanged daily for non-cleared swaps and non-cleared security-based swaps between Covered Swap Entities and Swap Entities and between Covered Swap Entities and all financial end-users (without regard to the swaps exposure of the particular financial end-user). The minimum variation margin amount is the daily mark-to-market change in the value of the swap to the Covered Swap Entity, taking into account variation margin previously posted or collected. For non-cleared swaps and security-based swaps between Covered Swap Entities and financial end-users, variation margin may be posted or collected in cash or non-cash collateral that is considered eligible for initial margin purposes. Variation margin is not subject to segregation with an independent, third-party custodian, and may, if permitted by contract, be rehypothecated.

The initial margin requirements of the Final Margin Rules are being phased in over time, and the variation margin requirements of the Final Margin Rules are currently in effect. UNG is not a Covered Swap Entity under the Final Margin Rules but it is a financial end-user. Accordingly, UNG is currently subject to the variation margin requirements of the Final Margin Rules. However, UNG does not have material swaps exposure and, accordingly, UNG will not be subject to the initial margin requirements of the Final Margin Rules.

The Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) required the CFTC and the SEC to adopt their own margin rules to apply to a limited number of registered swap dealers, security-based swap dealers, major swap participants, and major security-based swap participants that are not subject to the jurisdiction of one of the Agencies. On December 16, 2015 the CFTC finalized its margin rules, which are substantially the same as the Final Margin Rules and have the same implementation timeline. The SEC adopted margin rules for security-based swap dealers and major security-based swap participants on June 21, 2019. The SEC’s margin rules are generally aligned with the Final Margin Rules and the CFTC’s margin rules, but they differ in a few key respects relating to timing for compliance and the manner in which initial margin must be segregated. UNG does not currently engage in security-based swap transactions and, therefore, the SEC’s margin rules are not expected to apply to UNG.

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 UNG 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 are expected in the future, and, when finalized, could require UNG 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 UNG’s FCM.

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.

20

Table of Contents

Derivatives Regulations in Non-U.S. Jurisdictions

In addition to U.S. laws and regulations, UNG 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, UNG 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.

Money Market Funds

The SEC adopted amendments to Rule 2a-7 under the Investment Company Act of 1940, as amended (“1940 Act”), which became effective in 2016, to reform money market funds (“MMFs”). While the rule applies only to MMFs, it may indirectly affect institutional investors such as UNG. A portion of UNG’s assets that are not used for margin or collateral in the Futures Contracts currently are invested in government MMFs. UNG does not hold any non-government MMFs and does not anticipate investing in any non-government MMFs. However, if UNG invests in other types of MMFs besides government MMFs in the future, UNG could be negatively impacted by investing in an MMF that does not maintain a stable $1.00 NAV or that has the potential to impose redemption fees and gates (temporary suspension of redemptions).

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 UNG 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, referred to herein as the FDIC, or any other government agency. The share price of a government money market fund can fall below the $1.00 share price. UNG 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

Natural gas futures prices were volatile during the three months ended March 31, 2021. The price of the Benchmark Futures Contract started the period at $2.539 per million British thermal shares (“MMBtu”). The high of the period was on February 17, 2021 when the price reached $3.032 per MMBtu. The low of the period was on January 22, 2021 when the price dropped to $2.456 per MMBtu. The period ended with the Benchmark Futures Contract at $2.608 per MMBtu, an increase of approximately 2.72% over the period. UNG’s per share NAV began the period at $9.20 and ended the period at $9.61 on March 31, 2021, an increase of approximately 4.46% over the period. The Benchmark Futures Contract prices listed above began with the February 2021 contracts and ended with the May 2021 contracts. The increase of approximately 2.72% on the Benchmark Futures Contract listed above is a hypothetical return only and could not actually be achieved by an investor holding Natural Gas Futures Contracts. An investment in Natural Gas 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 Natural Gas Futures Contracts, measured from the start of the period to the end of the period, does not represent the actual benchmark results that UNG seeks to track, which are more fully described below in the section titled “Tracking UNG’s Benchmark.”

During the three months ended March 31, 2021, the natural gas futures market experienced states of both contango and backwardation. When the market was in a state of contango, the near month natural gas futures contract is lower than the price of the next month natural gas futures contract, or contracts further away from expiration. During periods of backwardation the near month natural gas futures contract is higher than the price of the next month natural gas 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 Natural Gas Futures Prices and the Impact on Total Returns” below.

21

Table of Contents

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

The per share NAV of UNG’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. UNG’s administrator uses the NYMEX closing price (determined at the earlier of the close of the NYMEX or 2:30 p.m. New York time) for the contracts held on the NYMEX, but calculates or determines the value of all other UNG investments, including cleared swaps or 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 Natural Gas Market

Results of Operations. On April 18, 2007, UNG listed its shares on the AMEX under the ticker symbol “UNG.” On that day, UNG established its initial offering price at $50.00 per share and issued 200,000 shares to the initial Authorized Participant in exchange for $10,000,000 in cash. As a result of the acquisition of the AMEX by NYSE Euronext, UNG’s shares ceased trading on the AMEX and commenced trading on the NYSE Arca on November 25, 2008.

As of March 31, 2021, UNG had issued 2,173,900,000 shares, 28,484,588 of which were outstanding. As of March 31, 2021, there were 106,100,000 shares registered but not yet issued. UNG has registered 2,280,000,000 shares since inception.

More shares may have been issued by UNG than are outstanding due to the redemption of shares. Unlike funds that are registered under the 1940 Act, shares that have been redeemed by UNG cannot be resold by UNG. As a result, UNG contemplates that additional offerings of its shares will be registered with the SEC in the future in anticipation of additional issuances and redemptions.

As of March 31, 2021, UNG had the following Authorized Participants: ABN Amro, BNP Paribas Securities Corp., Citadel Securities LLC, Citigroup Global Markets Inc., Credit Suisse Securities USA LLC, Goldman Sachs & Company, 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 Three Months Ended March 31, 2021 Compared to the Three Months Ended March 31, 2020

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Three months ended | ​
​ |  | March 31, 2021 |  | March 31, 2020 | ​
Average daily total net assets | ​ | $ | 352,142,507 | ​ | $ | 461,291,266 | ​
Dividend and interest income earned on Treasuries, cash and/or cash equivalents | ​ | $ | 30,029 | ​ | $ | 1,746,592 | ​
Annualized yield based on average daily total net assets | ​ |  | 0.03 | % |  | 1.52 | %
Management fee | ​ | $ | 520,978 | ​ | $ | 688,156 | ​
Total fees and other expenses excluding management fees | ​ | $ | 495,851 | ​ | $ | 842,093 | ​
Fees and expenses related the registration or offering of additional shares | ​ | $ | 81,000 | ​ | $ | 68,250 | ​
Total commissions accrued to brokers | ​ | $ | 257,862 | ​ | $ | 572,700 | ​
Total commissions as annualized percentage of average total net assets | ​ |  | 0.30 | % |  | 0.50 | %
Commissions accrued as a result of rebalancing | ​ | $ | 225,188 | ​ | $ | 496,696 | ​
Percentage of commissions accrued as a result of rebalancing | ​ |  | 87.33 | % |  | 86.73 | %
Commissions accrued as a result of creation and redemption activity | ​ | $ | 32,674 | ​ | $ | 76,004 | ​
Percentage of commissions accrued as a result of creation and redemption activity | ​ |  | 12.67 | % |  | 13.27 | %

​

Portfolio Expenses. UNG’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 UNG pays to USCF is calculated as a percentage of the total net assets of UNG. The fee is accrued daily and paid monthly.

Average interest rates earned on short-term investments held by UNG, including cash, cash equivalents and Treasuries, were lower during the three months ended March 31, 2021, compared to the three months ended March 31, 2020. As a result, the amount of income earned by UNG as a percentage of average daily total net assets was lower during the three months ended March 31, 2021, compared to the three months ended March 31, 2020. To the degree that the aggregate yield is lower the net expense ratio, inclusive of income, will be higher.

22

Table of Contents

The decrease in total fees and other expenses excluding management fees for the three months ended March 31, 2021, compared to the three months ended March 31, 2020 was due primarily to a decrease in total commissions accrued to brokers and professional fees.

The decrease in total commissions accrued to brokers for the three months ended March 31, 2021, compared to the three months ended March 31, 2020, was due primarily to a lower number of Natural Gas Futures Contracts being held and traded.

Tracking UNG’s Benchmark

USCF seeks to manage UNG’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 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 UNG’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 Futures Contract. As an example, if the average daily movement of the price of the Benchmark 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). UNG’s portfolio management goals do not include trying to make the nominal price of UNG’s per share NAV equal to the nominal price of the current Benchmark Futures Contract or the spot price for natural gas. USCF believes that it is not practical to manage the portfolio to achieve such an investment goal when investing in Natural Gas Futures Contracts and Other Natural Gas-Related Investments.

For the 30-valuation days ended March 31, 2021, the average daily change in the Benchmark Futures Contract was (0.528)%, while the simple average daily change in the per share NAV of UNG over the same time period was (0.532)%. The average daily difference was (0.004)% (or 0.4 basis points, where 1 basis point equals 1/100 of 1)%, meaning that over this time period UNG’s NAV performed within the plus or minus 10% range established as its benchmark tracking goal.

Since the commencement of the offering of UNG’s shares to the public on April 18, 2007 to March 31, 2021, the average daily change in the Benchmark Futures Contract was (0.103)%, while the average daily change in the per share NAV of UNG over the same time period was (0.105)%. The average daily difference was (0.002)% (or (0.2) basis points, where 1 basis point equals 1/100 of 1)%, meaning that over this time period UNG’s NAV performed was within the plus or minus 10% range established as its benchmark tracking goal.

23

Table of Contents

The following two graphs demonstrate the correlation between the changes in UNG’s NAV and the changes in the Benchmark Futures Contract. The first graph exhibits the daily changes in the last 30 valuation days ended March 31, 2021. The second graph measures monthly changes since March 31, 2016 through March 31, 2021.

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

​

​

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

​

​

24

Table of Contents

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

For the three months ended March 31, 2021, the actual total return of UNG as measured by changes in its per share NAV was 4.46%. This is based on an initial per share NAV of $9.20 as of December 31, 2020 and an ending per share NAV as of March 31, 2021 of $9.61. During this time period, UNG made no distributions to its shareholders. However, if UNG’s daily changes in its per share NAV had instead exactly tracked the changes in the daily total return of the Benchmark Futures Contract, UNG would have had an estimated per share NAV of $9.70 as of March 31, 2021, for a total return over the relevant time period of 5.43%. The difference between the actual per share NAV total return of UNG of 4.46% and the expected total return based on the Benchmark Futures Contract of 5.43% was a difference over the time period of (0.97)%, which is to say that UNG’s actual total return underperformed its benchmark by that percentage. UNG 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, tends to cause daily changes in the per share NAV of UNG to track slightly lower or higher than daily changes in the price of the Benchmark Futures Contract.

By comparison, for the three months ended March 31, 2020, the actual total return of UNG as measured by changes in its per share NAV was (26.49)%. This was based on an initial per share NAV of $16.91 as of December 31, 2019 and an ending per share NAV as of March 31, 2020 of $12.43. During this time period, UNG made no distributions to its shareholders. However, if UNG’s daily changes in its per share NAV had instead exactly tracked the changes in the daily total return of the Benchmark Futures Contract, UNG would have had an estimated per share NAV of $12.42 as of March 31, 2020, for a total return over the relevant time period of (26.55)%. The difference between the actual per share NAV total return of UNG of (26.49)% and the expected total return based on the Benchmark Futures Contract of (26.55)% was a difference over the time period of 0.06%, which is to say that UNG’s actual total return outperformed its benchmark by that percentage. UNG incurred 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, tended to cause daily changes in the per share NAV of UNG to track slightly lower or higher than daily changes in the price of the Benchmark Futures Contract.

There are currently three factors that have impacted or are most likely to impact UNG’s ability to accurately track Benchmark Futures Contract.

First, UNG may buy or sell its holdings in the then current Benchmark Futures Contract at a price other than the closing settlement price of that contract on the day during which UNG executes the trade. In that case, UNG may pay a price that is higher, or lower, than that of the Benchmark Futures Contract, which could cause the changes in the daily per share NAV of UNG to either be too high or too low relative to the daily changes in the Benchmark Futures Contract. During the three months ended March 31, 2021, USCF attempted to minimize the effect of these transactions by seeking to execute its purchase or sale of the Benchmark Futures Contract at, or as close as possible to, the end of the day settlement price. However, it may not always be possible for UNG to obtain the closing settlement price and there is no assurance that failure to obtain the closing settlement price in the future will not adversely impact UNG’s attempt to track the Benchmark Futures Contract.

25

Table of Contents

Second, UNG 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 UNG to track slightly lower than daily changes in the price of the Benchmark Futures Contract. At the same time, UNG earns dividend and interest income on its cash, cash equivalents and Treasuries. UNG is not required to distribute any portion of its income to its shareholders and did not make any distributions to shareholders during the three months ended March 31, 2021. Interest payments, and any other income, were retained within the portfolio and added to UNG's NAV. When this income exceeds the level of UNG'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), UNG will realize a net yield that will tend to cause daily changes in the per share NAV of UNG to track slightly higher than daily changes in the Benchmark 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 Futures Contract. USCF anticipates that interest rates may continue to stagnate over the near future near historical lows. It is anticipated that fees and expenses paid by UNG may continue to be higher than interest earned by UNG. As such, USCF anticipates that UNG could possibly underperform its benchmark so long as interest earned is lower than the fees and expenses paid by UNG.

Third, UNG may hold Other Natural Gas-Related Investments in its portfolio that may fail to closely track the Benchmark Futures Contract’s total return movements. In that case, the error in tracking the Benchmark Futures Contract could result in daily changes in the per share NAV of UNG that are either too high, or too low, relative to the daily changes in the Benchmark Futures Contract. During the three months ended March 31, 2021, UNG did not hold any Other Natural Gas-Related Investments. UNG also held investments in Natural Gas Futures Contracts traded on the ICE Futures US whose settlement price also tracks the settlement price of the Benchmark Futures Contract and fully-collateralized OTC swaps designed to track the settlement price of the Benchmark Futures Contract. UNG may invest in Other Natural Gas-Related Investments, such as OTC swaps, which have increased transaction-related expenses and may result in increased tracking error. OTC swaps increase transaction-related expenses due to the fact that UNG must pay to the swap counterparty certain fees that UNG does not have to pay for transactions executed on an exchange.

Finally, due to potential regulatory limitations, UNG may determine to hold greater amounts of cash and cash equivalents and lesser amounts of Natural Gas Interests, if it determines that will most appropriately satisfy UNG’s investment objective. Holding more cash and cash equivalents and less Natural Gas Interests for some period of time may result in increased tracking error. There are additional Other Natural Gas-Related Investments that UNG is permitted to invest in whose price movements may not track the settlement price of the Benchmark Futures Contract.

Term Structure of Natural Gas 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 natural gas for immediate delivery, is $3 per MMBtu, and the value of a position in the near month futures contract is also $3. Over time, the price of natural gas will fluctuate based on a number of market factors, including demand for natural gas 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 MMBtu of natural gas, 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.

26

Table of Contents

Contango and backwardation are natural market forces that have impacted the total return on an investment in UNG’s shares during the past year relative to a hypothetical direct investment in natural gas. In the future, it is likely that the relationship between the market price of UNG’s shares and changes in the spot prices of natural gas 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 natural gas, 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 $2.94 per MMBtu, or 2% cheaper than the $3 near month futures contract, then, hypothetically, and assuming no other changes (e.g., to either prevailing natural gas 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 $2.94 next month futures contract would rise to $3 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 natural gas. As a result, it would be possible for the new near month futures contract to rise 12% while the spot price of natural gas may have risen a lower amount, e.g., only 10%. Similarly, the spot price of natural gas 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 $3 per MMBtu, the price of the next month futures contract might be $3.06 per MMBtu, or 2% more expensive than the front month futures contract. Hypothetically, and assuming no other changes, the value of the $3.06 next month futures contract would fall to $3 as it approaches expiration. In this example, the value of an investment in the second month would tend to underperform the spot price of natural gas. As a result, it would be possible for the new near month futures contract to rise only 10% while the spot price of natural gas may have risen a higher amount, e.g., 12%. Similarly, the spot price of natural gas 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 natural gas futures contract to the price of 13th month natural gas 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 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).

27

Table of Contents

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

​

​

​

An alternative way to view the same data is to subtract the dollar price of the 13th month natural gas futures contract from the dollar price of the near month natural gas 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 natural gas market spent time in both backwardation and contango during the last ten years. The chart below shows the results from subtracting the average dollar price of the near 12-month contracts from the near month price for the 10-year period between March 31, 2011 and March 31, 2021. Investors will note that the natural gas market spent time in both backwardation and contango.

28

Table of Contents

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

​

​

An investment in a portfolio that owned only the near month natural gas 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 natural gas futures contracts. Generally speaking, when the natural gas futures market is in backwardation, a portfolio of only the near month natural gas futures contract may tend to have a higher total return than a portfolio of 12 months’ of the natural gas futures contract. Conversely, if the natural gas futures market was in contango, the portfolio containing only 12 months’ of natural gas futures contracts may tend to outperform the portfolio holding only the near month natural gas futures contract.

29

Table of Contents

Historically, the natural gas futures markets have experienced periods of contango and backwardation. Because natural gas demand is seasonal, it is possible for the price of natural gas futures contracts for delivery within one or two months to rapidly move from backwardation into contango and back again within the relatively short period of time of less than one year. However, the natural gas market has primarily been in a state of contango since late 2014.

Periods of contango or backwardation do not materially impact UNG’s investment objective of having the daily percentage changes in its per share NAV track the daily percentage changes in the price of the Benchmark Futures Contract since the impact of backwardation and contango tend to equally impact the daily percentage changes in price of both UNG’s shares and the Benchmark Futures Contract. It is impossible to predict with any degree of certainty whether backwardation or contango will occur in the future. It is likely that both conditions will occur during different periods and, because of the seasonal nature of natural gas demand, both may occur within a single year’s time.

Natural Gas Market. During the three months ended March 31, 2021, front month natural gas futures prices in the United States increased by 2.72%. Prices reached their low for the year in late January at $2.446 and peaked in February at $3.219. The number of rigs dedicated to natural gas production fell from over 200 in 2019 to a low of 68 in 2020. Natural gas rigs rose to 92 by the end of March, 2021. The dramatic drop in supply over the previous two years helped boost prices from their 2020 low. However, while both domestic demand and U.S. exports of natural gas have increased over the last five years, the robust ability of the U.S. energy industry to meet demand may constrain natural gas prices except during periods of extreme temperatures.

Mitigation measures taken in the United States to slow the spread of the COVID-19 pandemic led to a decline in natural gas consumption in the industrial sector and by other commercial users. Simultaneously, natural gas production fell as a result of reduced drilling activity and shut-ins of crude oil wells where natural gas is a byproduct.

While natural gas prices declined steadily during the first half of 2020, prices were not as impacted by the COVID-19 pandemic as other energy commodities. Lower prices were at least in part due to the ongoing surplus of natural gas in storage and lower demand resulting from warm weather in the United States. Additionally, crude oil and petroleum products are more sensitive to changes in commuter and air miles as well as manufacturing and industrial production, all of which dropped dramatically during first half of 2020.

The 30_day annualized volatility of natural gas prices rose notably from late February to late May of 2020 and averaged about 69% during the second quarter, considerably higher than five-year average volatility of approximately 44%. However, natural gas price volatility during the rest of 2020 was similar to prior years. Natural gas price volatility in 2020 never reached the extreme level that occurred during the 2018_2019 winter. Likewise, natural gas price volatility remained well below the levels of volatility seen in crude oil markets. While some uncertainty in natural gas prices was likely a result of COVID_19 mitigation efforts, the effects from the COVID_19 pandemic were more muted as compared to the impact on crude oil markets.

The ongoing impact of COVID_19 in the United States may continue to add pressure to natural gas demand, and the full impact is indeterminate. Supply and demand of natural gas continue to exhibit normal seasonal patterns, whereby both production and end-user demand increase in autumn and winter months and decline in spring and summer months. Peak demand and peak production in the winter of 2020-2021 fell somewhat below their five-year averages, though not dramatically, and prices have exhibited an uneven recovery from pandemic lows. Ultimately, the COVID_19 pandemic is likely to continue impacting both demand and supply and the ultimate impact on natural gas prices remains uncertain at this time.

Natural Gas 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.

30

Table of Contents

For the ten-year time period between March 31, 2011 and March 31, 2021, the table below compares the monthly movements of natural gas prices versus the monthly movements of the prices of several other energy commodities, such as crude oil, 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. It can be seen that over this particular time period, the movement of natural gas on a monthly basis was neither strongly correlated nor inversely correlated with the movements of large cap U.S. equities, U.S. Government bonds, global equities, crude oil, diesel-heating oil, or unleaded gasoline.

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | Global | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | US Gov’t | ​ | Equities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Large Cap | ​ | Bonds | ​ | (FTSE | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | US Equities | ​ | (BEUSG4 | ​ | World | ​ | Crude | ​ | Heating | ​ | Unleaded | ​ | Natural
Correlation Matrix 10 Years |  | (S&P 600) |  | Index) |  | Index) |  | Oil |  | Oil |  | Gasoline |  | Gas
Large Cap US Equities (S&P 500) |  | 1.000 |  | (0.383) |  | 0.967 |  | 0.473 |  | 0.367 |  | 0.549 |  | 0.156
US Gov't Bonds (BEUSG4 Index) |  |  |  | 1.000 |  | (0.367) |  | (0.334) |  | (0.344) |  | (0.306) |  | (0.087)
Global Equities (FTSE World Index) |  |  |  |  |  | 1.000 |  | 0.513 |  | 0.429 |  | 0.579 |  | 0.137
Crude Oil |  |  |  |  |  |  |  | 1.000 |  | 0.785 |  | 0.742 |  | (0.001)
Heating Oil |  |  |  |  |  |  |  |  |  | 1.000 |  | 0.680 |  | 0.009
Unleaded Gasoline |  |  |  |  |  |  |  |  |  |  |  | 1.000 |  | 0.079
Natural Gas |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.000
Source: Bloomberg, NYMEX | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

​

The table below covers a more recent, but much shorter, range of dates than the above table. Over the one year period ended March 31, 2021, the movement of natural gas was neither strongly correlated nor inversely correlated with large cap U.S. equities, global equities crude oil, U.S. government bonds oil and unleaded gasoline. The movement of natural gas was somewhat negatively correlated with diesel-heating oil.

*PAST PERFORMANCE IS NOT NECESSARILY INDICATIVE OF FUTURE RESULTS

​

​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | Global | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | US Gov’t | ​ | Equities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Large Cap | ​ | Bonds | ​ | (FTSE | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | US Equities | ​ | (BEUSG4 | ​ | World | ​ | Crude | ​ | Heating | ​ | Unleaded | ​ | Natural
Correlation Matrix 1 Year |  | (S&P 500) |  | Index) |  | Index) |  | Oil |  | Oil |  | Gasoline |  | Gas
Large Cap US Equities (S&P 500) |  | 1.000 |  | (0.329) |  | 0.987 |  | 0.499 |  | 0.330 |  | 0.756 |  | 0.107
US Gov't Bonds (BEUSG4 Index) |  |  |  | 1.000 |  | (0.337) |  | (0.323) |  | (0.389) |  | (0.496) |  | (0.222)
Global Equities (FTSE World Index) |  |  |  |  |  | 1.000 |  | 0.552 |  | 0.442 |  | 0.787 |  | 0.023
Crude Oil |  |  |  |  |  |  |  | 1.000 |  | 0.836 |  | 0.875 |  | (0.189)
Heating Oil |  |  |  |  |  |  |  |  |  | 1.000 |  | 0.712 |  | (0.356)
Unleaded Gasoline |  |  |  |  |  |  |  |  |  |  |  | 1.000 |  | (0.090)
Natural Gas |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.000
Source: Bloomberg, NYMEX | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

​

Investors are cautioned that the historical price relationships between natural gas 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 natural gas 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 natural gas could have long-term correlation results that indicate prices of natural gas 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 natural gas to equities and bonds will be either more strongly positively correlated or more strongly negatively correlated than the long term historical results suggest.

31

Table of Contents

The correlations between natural gas, crude oil, diesel-heating oil and gasoline are relevant because USCF endeavors to invest UNG’s assets in Natural Gas Futures Contracts and Other Natural Gas-Related Investments so that daily changes in percentage terms in UNG’s per share NAV correlate as closely as possible with daily changes in percentage terms in the price of the Benchmark Futures Contract. If certain other fuel-based commodity futures contracts do not closely correlate with the Natural Gas 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 Futures Contract will closely correlate with changes in percentage terms in the spot price of natural gas.

Critical Accounting Policies

Preparation of the condensed 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. UNG’s application of these policies involves judgments and actual results may differ from the estimates used.

USCF has evaluated the nature and types of estimates that it makes in preparing UNG’s condensed 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 UNG for its Natural Gas 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, UNG 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

UNG has not made, and does not anticipate making, use of borrowings or other lines of credit to meet its obligations. UNG has met, and it is anticipated that UNG 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. UNG’s liquidity needs include: redeeming shares, providing margin deposits for its existing Natural Gas Futures Contracts or the purchase of additional Natural Gas Futures Contracts and posting collateral for its OTC swaps, if applicable, and payment of its expenses, summarized below under “Contractual Obligations.”

UNG 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. UNG has allocated substantially all of its net assets to trading in Natural Gas Interests. UNG invests in Natural Gas 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 Natural Gas Futures Contracts and Other Natural Gas-Related Investments. A significant portion of UNG’s NAV is held in cash and cash equivalents that are used as margin and as collateral for its trading in Natural Gas Interests. The balance of the assets are held in UNG’s account at its custodian bank and in investments in money market funds and Treasuries at the FCMs. Income received from UNG’s investments in money market funds and Treasuries is paid to UNG. During the three months ended March 31, 2021, UNG’s expenses exceeded the income UNG earned and the cash earned from the sale of Creation Baskets and the redemption of Redemption Baskets. During the three months ended March 31, 2021, UNG used other assets to pay expenses. To the extent expenses exceed income, UNG’s NAV will be negatively impacted.

USCF endeavors to have the value of UNG's Treasuries, cash and cash equivalents, whether held by UNG or posted as margin or other collateral, at all times approximate the aggregate market value of its obligations for its investments in Natural Gas Interests. Commodity pools' trading positions in futures contracts or other related investments are typically required to be secured by the deposit of margin funds that represent only a small percentage of a futures contract's (or other commodity interest's) entire market value. While USCF has not and does not intend to leverage UNG's assets, it is not prohibited from doing so under the LP Agreement.

Although permitted to do so under its LP Agreement, UNG has not and does not intend to leverage its assets and makes its investments accordingly. Consistent with the foregoing, UNG's investments will take into account the need for UNG to make permitted investments that also allow it to maintain adequate liquidity to meet its margin and collateral requirements and to avoid, to the extent reasonably possible, UNG becoming leveraged. If market conditions require it, these risk reduction procedures may occur on short notice if they occur other than during a roll or rebalance period.

32

Table of Contents

UNG’s investments in Natural Gas 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. In addition, if UNG is invested in OTC swaps, those OTC swaps have very limited liquidity since they are negotiated agreements that are not transferable by UNG except with the consent of its counterparty, and even if consent were granted, there may not be an available transferee. If UNG invests in OTC swaps in the future, such market conditions or contractual limits could prevent UNG from promptly liquidating its positions in Natural Gas Futures Contracts. During the three months ended March 31, 2021, UNG did not purchase or liquidate any of its positions while daily limits were in effect; however, UNG cannot predict whether such an event may occur in the future.

Since the initial offering of shares, UNG 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.

UNG may terminate at any time, regardless of whether UNG 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 taken by UNG or third parties or otherwise that would lead UNG to determine that it could no longer foreseeably meet its investment objective or that UNG’s aggregate net assets in relation to its operating expenses or its margin or collateral requirements make the continued operation of UNG unreasonable or imprudent, or (ii) adjudication of incompetence, bankruptcy, dissolution, withdrawal or removal of USCF as the general partner of UNG could cause UNG, 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 UNG. UNG'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 Futures Contracts and Other Natural Gas-Related Investments, such as forwards, involves UNG entering into contractual commitments to purchase or sell natural gas at a specified date in the future. The aggregate market value of the contracts will significantly exceed UNG’s future cash requirements since UNG intends to close out its open positions prior to settlement. As a result, UNG is generally only subject to the risk of loss arising from the change in value of the contracts. UNG considers the “fair value” of its derivative instruments to be the unrealized gain or loss on the contracts. The market risk associated with UNG’s commitments to purchase natural gas is limited to the aggregate market value of the contracts held. However, should UNG enter into a contractual commitment to sell natural gas, it would be required to make delivery of the natural gas at the contract price, repurchase the contract at prevailing prices or settle in cash. Since there are no limits on the future price of natural gas, the market risk to UNG could be unlimited.

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

Credit Risk

When UNG enters into Futures Contracts and Other Natural Gas-Related Investments, it is exposed to the credit risk that the counterparty will not be able to meet its obligations. The counterparty for the 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. UNG 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 UNG in such circumstances.

33

Table of Contents

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

In the future, UNG may purchase OTC swaps, 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 March 31, 2021, UNG held cash deposits and investments in Treasuries and money market funds in the amount of $268,057,128 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 UNG's custodian or FCMs, as applicable, cease operations.

Off Balance Sheet Financing

As of March 31, 2021, UNG 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 UNG. While UNG’s exposure under these indemnification provisions cannot be estimated, they are not expected to have a material impact on UNG’s financial position.

Redemption Basket Obligation

In order to meet its investment objective and pay its contractual obligations described below, UNG requires liquidity to redeem shares, which redemptions must be in blocks of 100,000 shares called “Redemption Baskets.” UNG 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

UNG’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 UNG’s NAV, currently 0.60% for a NAV of $1 billion or less, and thereafter of 0.50% for a NAV above $1 billion.

USCF agreed to pay the start-up costs associated with the formation of UNG, 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 UNG and its shares with the SEC, FINRA and NYSE Arca (formerly, AMEX), respectively. However, since UNG’s initial offering of shares, offering costs incurred in connection with registering and listing additional shares of UNG have been directly borne on an ongoing basis by UNG, 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 UNG’s condensed financial statements and its SEC, NFA and CFTC reports. USCF and UNG have also entered into a licensing agreement with the NYMEX pursuant to which UNG and the Related Public Funds, other than BNO, USCI and CPER, pay a licensing fee to the NYMEX. UNG also pays the fees and expenses associated with its tax accounting and reporting requirements.

USCF paid BBH&Co.'s fees for performing administrative services, including those in connection with the preparation of UNG's condensed financial statements and its SEC, NFA and CFTC reports through May 31, 2020.

34

Table of Contents

In addition to USCF’s management fee, UNG 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 UNG’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. UNG also pays a portion of the fees and expenses of the independent directors of USCF. See Note 3 to the Notes to Condensed 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 UNG’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 UNG’s existence. Either party may terminate these agreements earlier for certain reasons described in the agreements.

As of March 31, 2021, UNG's portfolio held 10,497 Natural Gas Futures NG Contracts traded on the NYMEX. As of March 31, 2021, UNG did not hold any Natural Gas Futures Contracts traded on the ICE Futures. For a list of UNG's current holdings, please see UNG's website at www.uscfinvestments.com.

​

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Commodity Price Risk

UNG is exposed to commodity price risk. In particular, UNG is exposed to natural gas price risk through its holdings of Natural Gas 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 Natural Gas Futures Contracts that UNG holds in its portfolio, as described in “Contractual Obligations" under “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations" above, are expected to directly affect the value of UNG’s shares.

OTC Contract Risk

UNG may purchase OTC contracts, such as forward contracts or swap or spot contracts. Unlike most exchange-traded futures contracts, cleared swaps 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.

UNG 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 UNG, the OTC component is the purchase or sale of one or more baskets of UNG shares. These EFRP transactions may expose UNG 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 UNG’s obligations or its exposure to the risks associated with a transaction prior to its scheduled termination date.

35

Table of Contents

To reduce the credit risk that arises in connection with such contracts, UNG will generally enter into an agreement with each counterparty based on the Master Agreement published by the International Swaps and Derivatives Association that provides for the netting of its overall exposure to its counterparty, if the counterparty is unable to meet its obligations to UNG due to the occurrence of a specified event, such as the insolvency of the counterparty.

USCF assesses or reviews, as appropriate, the creditworthiness of each potential or existing counterparty to an OTC swap pursuant to guidelines approved by the Board. Furthermore, USCF on behalf of UNG 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. UNG 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 three months reporting period ended March 31, 2021, UNG limited its OTC activities to EFRP transactions.

UNG anticipates that the use of Other Natural Gas-Related Investments together with its investments in Natural Gas Futures Contracts will produce price and total return results that closely track the investment goals of UNG. 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 Natural Gas Futures Contracts, which may impact UNG’s ability to successfully track the Benchmark Futures Contract.

​

Item 4. Controls and Procedures.

Disclosure Controls and Procedures

UNG maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in UNG’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 UNG if UNG had any officers, have evaluated the effectiveness of UNG’s disclosure controls and procedures and have concluded that the disclosure controls and procedures of UNG 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 UNG’s internal control over financial reporting during UNG’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, UNG’s internal control over financial reporting.

​

​

36

Table of Contents

Part II. OTHER INFORMATION

Item 1. Legal Proceedings.

From time to time, UNG may be involved in legal proceedings arising primarily from the ordinary course of its business. In addition, USCF, as the general partner of UNG 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, UNG and USCF are not currently party to any material legal proceedings.

SEC and CFTC Wells Notices

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 relates to USO’s disclosures in late April and early May regarding constraints imposed on USO’s ability to invest in Oil Futures Contracts. The SEC Wells Notice states that the SEC staff has 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 Securities Exchange Act of 1934, as amended (the "1934 Act"), and Rule 10b-5 thereunder, in each case with respect to its disclosures and USO’s actions.

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 states that the CFTC staff has 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 CEA, 7 U.S.C. §§ 6o(1)(A), (B), 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), in each case with respect to its disclosures and USO’s actions.

A Wells Notice is neither a formal charge of wrongdoing nor a final determination that the recipient has violated any law. USCF, USO, and Mr. Love maintain that USO’s disclosures and their actions were appropriate. They intend to vigorously contest the allegations made by the SEC staff in the SEC Wells Notice and the CFTC staff in the CFTC Wells Notice.

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 1934 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.

37

Table of Contents

The lead plaintiff has 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.

USCF, USO, and the individual defendants in In re: United States Oil Fund, LP Securities Litigation intend to vigorously contest such claims and have moved for their dismissal.

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”).

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 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 1934 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.

38

Table of Contents

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 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.

​

Item 1A. Risk Factors.

There have been no material changes to the risk factors previously disclosed in UNG’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020, filed on February 26, 2021.

​

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

(a) | None.
​ | ​
(b) | Not applicable.
​ | ​
(c) | UNG does not purchase shares directly from its shareholders. In connection with its redemption of baskets held by Authorized Participants, UNG redeemed 236 baskets (comprising 23,600,000 shares) during the first quarter of the year ending December 31, 2021. The following table summarizes the redemptions by Authorized Participants during the three months ended March 31, 2021:

​

Issuer Purchases of Equity Securities

​ | ​ | ​ | ​ | ​ | ​
​ |  | Total |  | ​ | ​
​ | ​ | Number of | ​ | ​
​ | ​ | Shares | ​ | Average Price Per
Period | ​ | Redeemed | ​ | Share
1/1/21 to 1/31/21 |  | 11,700,000 | ​ | $ | 9.69
2/1/21 to 2/28/21 |  | 9,000,000 | ​ | $ | 10.64
3/1/21 to 3/31/21 |  | 2,900,000 | ​ | $ | 9.70
Total |  | 23,600,000 | ​ |  |

​

​

Item 3. Defaults Upon Senior Securities.

Not applicable.

​

Item 4. Mine Safety Disclosures.

Not applicable.

​

Item 5. Other Information.

Monthly Account Statements

Pursuant to the requirement under Rule 4.22 under the Commodity Exchange Act, each month UNG 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 UNG’s website at www.uscfinvestments.com.

​

39

Table of Contents

​

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):

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

​

40

Table of Contents

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 Natural Gas 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: May 7, 2021 | ​

​

By: | /s/ Stuart P. Crumbaugh |
| Stuart P. Crumbaugh |
| Chief Financial Officer |
| (Principal financial and accounting officer) |
​ | ​ | ​
Date: May 7, 2021 | ​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

41