Martin Midstream Partners Reports First Quarter 2021 Financial Results and Declares Quarterly Cash Distribution

• First quarter 2021 financial performance exceeds internal projections despite winter storm impact
• Reported net income of $2.5 million and adjusted EBITDA of $30.9 million for the first quarter of 2021
• Generated distributable cash flow of $12.8 million for the first quarter of 2021
• Declares quarterly distribution of $0.005 or $0.02 per unit annually

Martin Midstream Partners L.P. MMLP (the "Partnership") today announced its financial results for the first quarter of 2021.

"For the first quarter of 2021, the Partnership exceeded our internal earnings forecast by $3.7 million despite headwinds from the February winter storm that plunged Texas and surrounding areas into a deep freeze," stated Bob Bondurant, President and Chief Executive Officer of Martin Midstream GP LLC, the general partner of the Partnership. "The majority of the impact from winter storm Uri was centered around our transportation and sulfur services segments as refineries ran at reduced rates or halted operations entirely. Our Smackover Refinery was down approximately nine days due to the storm, during which time we began preparations for the previously scheduled turnaround in March. This allowed us to minimize the amount of downtime at the refinery which was back in operation by March 9th. In the NGL segment, butane and propane margins were strong as customary seasonal demand returned.

"At this time the refineries we service have restored operations and utilization has climbed back to 86% of Gulf Coast capacity. The COVID-19 pandemic continues to impact demand but appears to be lessening as vaccinations become more widespread and the economy improves as a result. The Partnership remains focused on our leverage reduction goals and optimizing our assets to maximize free cash flow generation."

FIRST QUARTER 2021 OPERATING RESULTS BY BUSINESS SEGMENT

TERMINALLING AND STORAGE ("T&S")

T&S Operating Income for the three months ended March 31, 2021 and 2020 was $3.4 million and $1.0 million, respectively.

Adjusted segment EBITDA for T&S was $10.6 million and $11.5 million for the three months ended March 31, 2021 and 2020, respectively, reflecting the sale of Mega Lubricants in December of 2020 and expired capital recovery fees at the Smackover Refinery offset by improved margins on packaged lubricants products from lower production costs and operating efficiencies.

TRANSPORTATION

Transportation had an operating loss of $1.3 million for the three months ended March 31, 2021 and operating income of $2.4 million for the three months ended March 31, 2020.

Adjusted segment EBITDA for Transportation was $2.7 million and $7.9 million for the three months ended March 31, 2021 and 2020, respectively, reflecting lower marine utilization and reduced day rates along with lower land transportation load count related to demand destruction and lower refinery utilization as a result of COVID-19 and the impact from winter storm Uri in February of 2021.

SULFUR SERVICES

Sulfur Services Operating Income for the three months ended March 31, 2021 and 2020 was $6.4 million and $11.3 million, respectively.

Adjusted segment EBITDA for Sulfur Services was $9.2 million and $10.1 million for the three months ended March 31, 2021 and 2020, respectively, reflecting increased fertilizer demand compared to the first quarter of 2020 offset by lower refinery utilization volumes during the first quarter of 2021 as a result of COVID-19 and the impact from winter storm Uri. The first quarter of 2020 also benefited from business interruption insurance proceeds received of $2.7 million as a result of storm damage to the Neches shiploader.

NATURAL GAS LIQUIDS ("NGL")

NGL Operating Income for the three months ended March 31, 2021 and 2020 was $11.1 million and $5.2 million, respectively.

Adjusted segment EBITDA for NGL was $12.2 million and $5.5 million for the three months ended March 31, 2021 and 2020, respectively, primarily reflecting increased margins within the butane optimization and propane businesses.

UNALLOCATED SELLING, GENERAL AND ADMINISTRATIVE EXPENSE ("USGA")

USGA expenses included in operating income for the three months ended March 31, 2021 and 2020 were $3.9 million and $4.4 million, respectively.

USGA expenses included in adjusted EBITDA for the three months ended March 31, 2021 and 2020 were $3.7 million and $4.0 million, respectively, primarily reflecting a reduction in overhead allocated from Martin Resource Management.

LIQUIDITY

At March 31, 2021, the Partnership had $176 million drawn on its $300 million revolving credit facility, a $28.0 million increase from December 31, 2020. The increase was attributable to the redemption of the $28.8 million of senior unsecured notes that matured in February 2021. After the redemption, the Partnership has the following outstanding senior notes: senior secured notes of $53.8 million due 2024 and senior secured notes of $291.9 million due 2025, for a total of senior notes outstanding of $345.7 million. The Partnership's leverage ratio, as calculated under the revolving credit facility, was 5.4 times on both March 31, 2021 and December 31, 2020. The Partnership is in compliance with all debt covenants as of March 31, 2021.

QUARTERLY CASH DISTRIBUTION

The Partnership has declared a quarterly cash distribution of $0.005 per unit for the quarter ended March 31, 2021. The distribution is payable on May 14, 2021 to common unitholders of record as of the close of business on May 7, 2021. The ex-dividend date for the cash distribution is May 6, 2021.

COVID-19 RESPONSE

The Partnership continues to evaluate protocols in response to the COVID-19 pandemic. Where possible, employee work from home initiatives remain and travel restrictions have been lifted. Employees are encouraged to continue to exercise safety measures to protect the welfare of each other and the communities they serve.

RESULTS OF OPERATIONS

The Partnership had net income for the three months ended March 31, 2021 of $2.5 million, or $0.06 per limited partner unit. The Partnership had net income for the three months ended March 31, 2020 of $8.8 million, or $0.22 per limited partner unit. Adjusted EBITDA for the three months ended March 31, 2021 was $30.9 million compared to the three months ended March 31, 2020 of $31.0 million. Distributable cash flow for the three months ended March 31, 2021 was $12.8 million compared to the three months ended March 31, 2020 of $18.3 million.

Revenues for the three months ended March 31, 2021 were $200.9 million compared to the three months ended March 31, 2020 of $198.9 million.

EBITDA, adjusted EBITDA, distributable cash flow and adjusted free cash flow are non-GAAP financial measures which are explained in greater detail below under the heading "Use of Non-GAAP Financial Information." The Partnership has also included below a table entitled "Reconciliation of EBITDA, Adjusted EBITDA, Distributable Cash Flow and Adjusted Free Cash Flow" in order to show the components of these non-GAAP financial measures and their reconciliation to the most comparable GAAP measurement.

An attachment included in the Current Report on Form 8-K to which this announcement is included, contains a comparison of the Partnership's Adjusted EBITDA for the first quarter 2021 to the Partnership's Adjusted EBITDA for the first quarter 2020.

Investors' Conference Call

Date: Thursday, April 22, 2021
Time: 8:00 a.m. CT (please dial in by 7:55 a.m.)
Dial In #: (833) 900-2251
Conference ID: 3387961

Replay Dial In # (800) 585-8367 – Conference ID: 3387961

A webcast of the conference call will also be available by visiting the Events and Presentations section under Investor Relations on our website at www.MMLP.com.

About Martin Midstream Partners

Martin Midstream Partners L.P., headquartered in Kilgore, Texas, is a publicly traded limited partnership with a diverse set of operations focused primarily in the United States Gulf Coast region. The Partnership's primary business lines include: (1) terminalling, processing, storage, and packaging services for petroleum products and by-products; (2) land and marine transportation services for petroleum products and by-products, chemicals, and specialty products; (3) sulfur and sulfur-based products processing, manufacturing, marketing and distribution; and (4) natural gas liquids marketing, distribution and transportation services. To learn more, visit www.MMLP.com. Follow Martin Midstream Partners L.P. on LinkedIn and Facebook.

Forward-Looking Statements

Statements about the Partnership's outlook and all other statements in this release other than historical facts are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements and all references to guidance or to financial or operational estimates or projections rely on a number of assumptions concerning future events and are subject to a number of uncertainties, including (i) the current and potential impacts of the COVID-19 pandemic generally, on an industry-specific basis, and on the Partnership's specific operations and business, (ii) the effects of the continued volatility of commodity prices and the related macroeconomic and political environment, and (iii) other factors, many of which are outside its control, which could cause actual results to differ materially from such statements. While the Partnership believes that the assumptions concerning future events are reasonable, it cautions that there are inherent difficulties in anticipating or predicting certain important factors. A discussion of these factors, including risks and uncertainties, is set forth in the Partnership's annual and quarterly reports filed from time to time with the Securities and Exchange Commission. The Partnership disclaims any intention or obligation to revise any forward-looking statements, including financial estimates, whether as a result of new information, future events, or otherwise except where required to do so by law.

Use of Non-GAAP Financial Information

The Partnership's management uses a variety of financial and operational measurements other than its financial statements prepared in accordance with United States Generally Accepted Accounting Principles ("GAAP") to analyze its performance. These include: (1) net income before interest expense, income tax expense, and depreciation and amortization ("EBITDA"), (2) adjusted EBITDA (3) distributable cash flow and (4) adjusted free cash flow. The Partnership's management views these measures as important performance measures of core profitability for its operations and the ability to generate and distribute cash flow, and as key components of its internal financial reporting. The Partnership's management believes investors benefit from having access to the same financial measures that management uses.

EBITDA and Adjusted EBITDA. The Partnership defines Adjusted EBITDA as EBITDA before unit-based compensation expenses, gains and losses on the disposition of property, plant and equipment, impairment and other similar non-cash adjustments. Certain items excluded from EBITDA and adjusted EBITDA are significant components in understanding and assessing an entity's financial performance, such as cost of capital and historical costs of depreciable assets. The Partnership has included information concerning EBITDA and adjusted EBITDA because it provides investors and management with additional information to better understand the following: financial performance of the Partnership's assets without regard to financing methods, capital structure or historical cost basis; the Partnership's operating performance and return on capital as compared to those of other similarly situated entities; and the viability of acquisitions and capital expenditure projects. The Partnership's method of computing adjusted EBITDA may not be the same method used to compute similar measures reported by other entities. The economic substance behind the Partnership's use of adjusted EBITDA is to measure the ability of the Partnership's assets to generate cash sufficient to pay interest costs, support its indebtedness and make distributions to its unitholders.

Distributable Cash Flow. The Partnership defines Distributable Cash Flow as Adjusted EBITDA less cash paid for interest, cash paid for income taxes, maintenance capital expenditures, and plant turnaround costs. Distributable cash flow is a significant performance measure used by the Partnership's management and by external users of its financial statements, such as investors, commercial banks and research analysts, to compare basic cash flows generated by the Partnership to the cash distributions it expects to pay unitholders. Distributable cash flow is also an important financial measure for the Partnership's unitholders since it serves as an indicator of the Partnership's success in providing a cash return on investment. Specifically, this financial measure indicates to investors whether or not the Partnership is generating cash flow at a level that can sustain or support an increase in its quarterly distribution rates. Distributable cash flow is also a quantitative standard used throughout the investment community with respect to publicly-traded partnerships because the value of a unit of such an entity is generally determined by the unit's yield, which in turn is based on the amount of cash distributions the entity pays to a unitholder.

Adjusted Free Cash Flow. Adjusted free cash flow is defined as distributable cash flow less growth capital expenditures and principal payments under finance lease obligations. Adjusted free cash flow is a significant performance measure used by the Partnership's management and by external users of our financial statements and represents how much cash flow a business generates during a specified time period after accounting for all capital expenditures, including expenditures for growth and maintenance capital projects. The Partnership believes that adjusted free cash flow is important to investors, lenders, commercial banks and research analysts since it reflects the amount of cash available for reducing debt, investing in additional capital projects, paying distributions, and similar matters. The Partnership's calculation of adjusted free cash flow may or may not be comparable to similarly titled measures used by other entities.

EBITDA, adjusted EBITDA, distributable cash flow, and adjusted free cash flow should not be considered alternatives to, or more meaningful than, net income, cash flows from operating activities, or any other measure presented in accordance with GAAP. The Partnership's method of computing these measures may not be the same method used to compute similar measures reported by other entities.

MMLP-F

Non-GAAP Financial Measures

The following table reconciles the non-GAAP financial measurements used by management to our most directly comparable GAAP measures for the three months ended March 31, 2021 and 2020.

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