• Full year 2021 financial performance exceeds guidance range
• Reported net income of $10.8 million and net loss of $0.2 million for the fourth quarter and year ended December 31, 2021, respectively
• Generated adjusted EBITDA of $39.7 million and $114.5 million for the fourth quarter and year ended December 31, 2021, respectively
• Reduced adjusted leverage from 5.47x at September 30, 2021 to 4.19x at December 31, 2021
• Releases 2022 financial guidance range

Martin Midstream Partners L.P. (Nasdaq:MMLP) ("MMLP" or the "Partnership") today announced its financial results for the three months and year ended December 31, 2021.

“The Partnership finished the year with another strong quarter leading to adjusted EBITDA of $114.5 million for 2021, exceeding the high end of our guidance by approximately $12.5 million. These results allowed us to make significant progress towards our leverage goals as adjusted and total leverage were reduced over a full turn from both December 31, 2020 and September 31, 2021,” stated Bob Bondurant, President and Chief Executive Officer of Martin Midstream GP LLC, the general partner of the Partnership. “The rebound in the global economy and strengthening commodity prices resulted in solid annual results across all segments, and particularly in our fertilizer, land transportation and butane optimization businesses.

“As we focus on 2022, I remain confident in our diversified refinery services asset base which has performed well through the last two years of economic instability. Our priority remains on maximizing investor value through our continued emphasis on capital discipline and niche organic growth projects with our long-term business partners.”

FOURTH QUARTER 2021 OPERATING RESULTS BY BUSINESS SEGMENT

TERMINALLING AND STORAGE ("T&S")

T&S operating income was $3.9 million and $12.6 million for the three months ended December 31, 2021 and 2020, respectively. The three months ended December 31, 2020 benefited from a $9.5 million gain on sale of assets from the disposition of the Partnership’s Mega Lubricants division.

Adjusted segment EBITDA for T&S was $11.0 million and $10.6 million for the three months ended December 31, 2021 and 2020, respectively, reflecting increased volumes and margins in our lubricants and specialty products division combined with higher throughput and storage revenue at our specialty terminals. This was offset by increased utilities expense at the Smackover Refinery.

TRANSPORTATION

Transportation operating income was $5.1 million for the three months ended December 31, 2021 compared to an operating loss for the three months ended December 31, 2020.

Adjusted segment EBITDA for Transportation was $8.8 million and $1.7 million for the three months ended December 31, 2021 and 2020, respectively, reflecting higher land transportation rates due to tightness in the labor market and supply chain issues coupled with increased load count as refinery utilization improved. Marine transportation saw increased cash flows resulting from higher utilization and transportation rates as refinery utilization improved, offset by a reduction in marine equipment.

SULFUR SERVICES

Sulfur Services operating income was $8.9 million and $4.7 million for the three months ended December 31, 2021 and 2020, respectively.

Adjusted segment EBITDA for Sulfur Services was $11.4 million and $7.4 million for the three months ended December 31, 2021 and 2020, respectively, reflecting an increase in volumes and margins experienced in both our fertilizer and sulfur divisions.

NATURAL GAS LIQUIDS ("NGL")

NGL operating income was $12.2 million and $1.5 million for the three months ended December 31, 2021 and 2020, respectively.

Adjusted segment EBITDA for NGL was $12.8 million and $2.0 million for the three months ended December 31, 2021 and 2020, respectively, primarily as a result of increased margins in our butane optimization business. In the fourth quarter of 2020, we experienced reduced demand in our butane optimization business due to the impact of COVID-19 on refinery utilization and backwardation of the forward price curve delaying refinery purchases causing misalignment of our physical sales and financially hedged volumes.

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

USGA expenses included in operating income were $4.3 million and $4.6 million for the three months ended December 31, 2021 and 2020, respectively.

USGA expenses included in adjusted EBITDA were $4.3 million for both the three months ended December 31, 2021 and 2020, remaining consistent period over period.

CAPITALIZATION

At December 31, 2021, the Partnership had $506 million of total debt outstanding, including $160 million drawn on its $275 million revolving credit facility, $54 million of senior secured 1.5 lien notes due 2024 and $292 million of senior secured second lien notes due 2025. At December 31, 2021, the Partnership had liquidity of approximately $93 million from available capacity under its revolving credit facility, an increase of $67 million from September 30, 2021. The Partnership’s adjusted leverage ratio, as calculated under the revolving credit facility, was 4.2 times and 5.5 times on December 31, 2021 and September 30, 2021, respectively. The Partnership was in compliance with all debt covenants as of December 31, 2021.

RESULTS OF OPERATIONS

The Partnership had net income of $10.8 million, or $0.27 per limited partner unit, for the three months ended December 31, 2021. The Partnership had a net loss of $2.6 million, a loss of $0.06 per limited partner unit, for the three months ended December 31, 2020. Adjusted EBITDA was $39.7 million for the three months ended December 31, 2021 compared to $17.4 million for the three months ended December 31, 2020. Net cash provided by operating activities was $48.1 million for the three months ended December 31, 2021 compared to $45.6 million for the three months ended December 31, 2020. Distributable cash flow was $19.3 million for the three months ended December 31, 2021 compared to $0.8 million for the three months ended December 31, 2020.

The Partnership had a net loss of $0.2 million, a loss of $0.01 per limited partner unit, for the year ended December 31, 2021. The Partnership had a net loss of $6.8 million, a loss of $0.17 per limited partner unit, for the year ended December 31, 2020. Adjusted EBITDA was $114.5 million for the year ended December 31, 2021 compared to $94.9 million for the year ended December 31, 2020. Net cash provided by operating activities was $35.7 million for the year ended December 31, 2021 compared to $64.8 million for the year ended December 31, 2020, primarily due to an increase in working capital offset by improved financial performance. Distributable cash flow was $44.6 million for the year ended December 31, 2021 compared to $39.7 million for the year ended December 31, 2020.

Revenues were $285.9 million for the three months ended December 31, 2021 compared to $180.1 million for the three months ended December 31, 2020. Revenues were $882.4 million for the year ended December 31, 2021 compared to $672.1 million for the year ended December 31, 2020.

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 fourth quarter 2021 to the Partnership's adjusted EBITDA for the fourth quarter 2020.

2022 FINANCIAL GUIDANCE

The Partnership expects to generate adjusted EBITDA between $100 million and $110 million for full-year 2022. Guidance assumptions include a slight contraction in margins as supply chain disruptions and inflation impact all segments with margin-based business lines. Offsetting these negative items, we expect land transportation rates will continue to increase due to a tight driver market and supply chain disruptions, and anticipate increasing utilization in our inland marine division and the benefit of a full year term contract for our offshore unit.

Distributable cash flow is expected to be between $31 million and $41 million for full-year 2022. Adjusted free cash flow is expected to be between $23 million and $33 million, or approximately $22 million to $32 million after distributions.

MMLP does not intend at this time to provide financial guidance beyond 2022.

The Partnership has not provided comparable GAAP financial information on a forward-looking basis because it would require the Partnership to create estimated ranges on a GAAP basis, which would entail unreasonable effort as the adjustments required to reconcile forward-looking non-GAAP measures cannot be predicted with a reasonable degree of certainty but may include, among others, costs related to debt amendments and unusual charges, expenses and gains. Some or all of those adjustments could be significant.

2021 K-1 TAX PACKAGES

The MMLP K-1 tax packages are expected to be available online through our website at www.mmlp.com or www.taxpackagesupport.com/martinmidstream on or before February 28, 2022. Mailing of the tax packages is currently expected to be complete the week of March 7, 2022. In an effort to be environmentally friendly, the Partnership encourages its unitholders to sign up for electronic delivery of their MMLP tax package.

INVESTORS CONFERENCE CALL

Date: Thursday, February 17, 2022

Time: 8:00 a.m. CT (please dial in by 7:55 a.m.)

Dial In #: (888) 330-2398

Conference ID: 8536096

Replay Dial In # (800) 770-2030 – Conference ID: 8536096

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

MMLP, headquartered in Kilgore, Texas, is a publicly traded limited partnership with a diverse set of operations focused primarily in the Gulf Coast region of the United States. MMLP’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 financial estimates 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 (including variants of the virus), 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 “SEC”). 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

To assist the Partnership's management in assessing its business, it uses the following non-GAAP financial measures: earnings before interest, taxes, and depreciation and amortization ("EBITDA"), adjusted EBITDA (as defined below) distributable cash flow available to common unitholders (“distributable cash flow”), and free cash flow after growth capital expenditures and principal payments under finance lease obligations ("adjusted free cash flow"). 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.

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.

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. Adjusted EBITDA is used as a supplemental performance and liquidity measure by the Partnership's management and by external users of its financial statements, such as investors, commercial banks, research analysts, and others, to assess:

• the financial performance of the Partnership's assets without regard to financing methods, capital structure, or historical cost basis;
• the ability of the Partnership's assets to generate cash sufficient to pay interest costs, support its indebtedness, and make cash distributions to its unitholders; and
• its operating performance and return on capital as compared to those of other companies in the midstream energy sector, without regard to financing methods or capital structure.

The GAAP measures most directly comparable to adjusted EBITDA are net income (loss) and net cash provided by (used in) operating activities. Adjusted EBITDA should not be considered an alternative to, or more meaningful than, net income (loss), operating income (loss), net cash provided by (used in) operating activities, or any other measure of financial performance presented in accordance with GAAP. Adjusted EBITDA may not be comparable to similarly titled measures of other companies because other companies may not calculate adjusted EBITDA in the same manner.

Adjusted EBITDA does not include interest expense, income tax expense, and depreciation and amortization. Because the Partnership has borrowed money to finance its operations, interest expense is a necessary element of its costs and its ability to generate cash available for distribution. Because the Partnership has capital assets, depreciation and amortization are also necessary elements of its costs. Therefore, any measures that exclude these elements have material limitations. To compensate for these limitations, the Partnership believes that it is important to consider net income (loss) and net cash provided by (used in) operating activities as determined under GAAP, as well as adjusted EBITDA, to evaluate its overall performance.

Distributable Cash Flow. The Partnership defines distributable cash flow as net cash provided by (used in) operating activities less cash received (plus cash paid) for closed commodity derivative positions included in accumulated other comprehensive income (loss), plus changes in operating assets and liabilities which (provided) used cash, less 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 us 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 its 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. The Partnership defines adjusted free cash flow 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 its 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.

The GAAP measure most directly comparable to distributable cash flow and adjusted free cash flow is net cash provided by (used in) operating activities. Distributable cash flow and adjusted free cash flow should not be considered alternatives to, or more meaningful than, net income (loss), operating income (loss), net cash provided by (used in) operating activities, or any other measure of liquidity presented in accordance with GAAP. Distributable cash flow and adjusted free cash flow have important limitations because they exclude some items that affect net income (loss), operating income (loss), and net cash provided by (used in) operating activities. Distributable cash flow and adjusted free cash flow may not be comparable to similarly titled measures of other companies because other companies may not calculate these non-GAAP metrics in the same manner. To compensate for these limitations, the Partnership believes that it is important to consider net cash provided by (used in) operating activities determined under GAAP, as well as distributable cash flow and adjusted free cash flow, to evaluate its overall liquidity.

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