OPERATIONS AND FINANCIAL UPDATE

During the second quarter of 2021, the Company recorded total operating income of $38.8 million, an increase of 3% compared to the first quarter of 2021. During the second quarter of 2021, the Company recorded consolidated net income (including non-controlling interest) of $54.5 million, an increase of 110% from the first quarter of 2021. Second quarter 2021 Adjusted EBITDA (as defined and reconciled below) was $76.0 million, an increase of 16% from the first quarter of 2021.

Second quarter operated capital expenditures totaled $11.9 million and aggregate contributions to equity method joint ventures were $2.8 million. Rattler also received proceeds of $9.1 million in distributions from equity method investments during the quarter.

The following table summarizes the Company's throughput on its operated assets.

CASH DISTRIBUTION

On August 2, 2021, the Board of Directors of Rattler's general partner approved a cash distribution for the second quarter of 2021 of $0.25 per common unit, payable on August 23, 2021 to unitholders of record at the close of business on August 16, 2021.

COMMON UNIT REPURCHASE PROGRAM

On October 29, 2020, the Board of Directors of Rattler's general partner approved a common unit repurchase program to acquire up to $100.0 million of Rattler's outstanding common units through December 31, 2021. Pursuant to this program, during the second quarter of 2021, the Company repurchased 475,000 common units at an average unit price of $10.94 per unit for a total cost of $5.2 million. From the end of the second quarter of 2021 through July 30, 2021, Rattler repurchased an additional 332,465 common units for a total cost of $3.4 million. In total from the program's inception through July 30, 2021, Rattler has repurchased 3,539,320 common units for a total cost of $34.5 million, utilizing 34% of the $100.0 million approved by the Board for the repurchase program.

DIVESTITURES

On April 30, 2021, Rattler and its joint venture partner, Amarillo Midstream, each sold its 50% interest in Amarillo Rattler, LLC (“Amarillo Rattler”) to EnLink Midstream for aggregate total gross potential consideration of $75.0 million, consisting of $50.0 million at closing, $10.0 million upon the first anniversary of closing and up to $15.0 million in contingent earn-out payments over a three-year span based upon Diamondback's development activity. Net of transaction expenses and working capital adjustments, Rattler received $23.5 million at closing, with an incremental $5.0 million due in April 2022.

On June 28, 2021, Rattler closed on the sale of one of its real estate properties located in Midland, Texas for proceeds of $9.1 million, including closing adjustments.

GUIDANCE

Below is Rattler's revised guidance for the full year 2021, with capital expenditures and equity method investment contributions updated to reflect the latest base operating plan.

(a) Does not include any volumes from the EPIC, Gray Oak, Wink to Webster, OMOG and Amarillo Rattler joint ventures
(b) Includes the EPIC, Gray Oak, Wink to Webster, OMOG and Amarillo Rattler joint ventures
(c) Represents distribution paid during calendar year

CONFERENCE CALL

Rattler will host a conference call and webcast for investors and analysts to discuss its results for the second quarter of 2021 on Thursday, August 5, 2021 at 10:00 a.m. CT. Participants should call (877) 288-2756 (United States/Canada) or (470) 495-9481 (International) and use the confirmation code 4085657. A telephonic replay will be available from 1:00 p.m. CT on Thursday, August 5, 2021 through Thursday, August 12, 2021 at 1:00 p.m. CT. To access the replay, call (855) 859-2056 (United States/Canada) or (404) 537-3406 (International) and enter confirmation code 4085657. A live broadcast of the earnings conference call will also be available via the internet at www.rattlermidstream.com under the “Investors” section of the site. A replay will also be available on the website following the call.

About Rattler Midstream LP

Rattler Midstream LP is a Delaware limited partnership formed by Diamondback Energy to own, operate, develop and acquire midstream and energy-related infrastructure assets. Rattler owns crude oil, natural gas and water-related midstream assets in the Permian Basin that provide services to Diamondback Energy and third party customers under primarily long-term, fixed-fee contracts. For more information, please visit www.rattlermidstream.com.

About Diamondback Energy, Inc.

Diamondback is an independent oil and natural gas company headquartered in Midland, Texas focused on the acquisition, development, exploration and exploitation of unconventional, onshore oil and natural gas reserves in the Permian Basin in West Texas. For more information, please visit www.diamondbackenergy.com.

Forward-Looking Statements

This news release contains forward-looking statements within the meaning of the federal securities laws. All statements, other than historical facts, that address activities that Rattler assumes, plans, expects, believes, intends or anticipates (and other similar expressions) will, should or may occur in the future are forward-looking statements. The forward-looking statements are based on management’s current beliefs, based on currently available information, as to the outcome and timing of future events, including specifically the statements regarding expectations of plans, strategies, objectives and anticipated financial and operating results of Rattler, including Rattler's capital expenditure levels, asset sales and other guidance discussed above. These forward-looking statements involve certain risks and uncertainties that could cause the results to differ materially from those expected by the management of Rattler. Information concerning these risks and other factors can be found in Rattler’s filings with the Securities and Exchange Commission (“SEC”), including its Forms 10-K, 10-Q and 8-K, which can be obtained free of charge on the SEC’s web site at http://www.sec.gov. Rattler undertakes no obligation to update or revise any forward-looking statement.

(a) Does not include any assets of the EPIC, Gray Oak, Wink to Webster, Amarillo Rattler or OMOG joint ventures.

(a) Does not include any assets of the EPIC, Gray Oak, Wink to Webster, Amarillo Rattler or OMOG joint ventures.

(a) Does not include any volumes of the EPIC, Gray Oak, Wink to Webster, Amarillo Rattler or OMOG joint ventures.

NON-GAAP FINANCIAL MEASURES

Adjusted EBITDA is a supplemental non-GAAP financial measure used by management and external users of its financial statements, such as industry analysts, investors, lenders and rating agencies. Management believes Adjusted EBITDA is useful because the measure allows it to more effectively evaluate the Company's operating performance and compare the results of its operations period to period without regard to its financing methods or capital structure.

The Company defines Adjusted EBITDA as net income (loss) attributable to Rattler Midstream LP plus net income (loss) attributable to non-controlling interest before interest expense (net of amount capitalized), depreciation, amortization and accretion on assets and liabilities of Rattler Midstream Operating LLC, its proportional depreciation and interest expense related to equity method investments, its proportional impairments and abandonments related to equity method investments, non-cash unit-based compensation expense, impairment and abandonments, (gain) loss on disposal of assets, (gain) loss from sale of equity method investment, provision for income taxes and other. The GAAP measure most directly comparable to Adjusted EBITDA is net income (loss). However, Adjusted EBITDA should not be considered an alternative to net income (loss) or any other measure of financial performance or liquidity presented in accordance with generally accepted accounting principles in the United States ("GAAP"). Adjusted EBITDA excludes some, but not all, items that affect net income (loss), and these measures may vary from those of other companies. As a result, Adjusted EBITDA as presented below may not be comparable to similarly titled measures of other companies.

The Company does not provide guidance on the reconciling items between forecasted net income (loss) and forecasted Adjusted EBITDA due to the uncertainty regarding timing and estimates of these items. Rattler provides a range for the forecasts of net income (loss) and Adjusted EBITDA to allow for the variability in timing and uncertainty of estimates of reconciling items between forecasted net income (loss) and forecasted Adjusted EBITDA. Therefore, the Company cannot reconcile forecasted net income (loss) to forecasted Adjusted EBITDA without unreasonable effort.

The following table presents a reconciliation of net income (loss), the most directly comparable GAAP financial measure, to Adjusted EBITDA for each of the periods indicated:

Adjusted net income (loss) is a supplemental non-GAAP financial measure equal to net income (loss) adjusted for (gain) loss on disposal of assets, gain (loss) on sale of equity method investments and related income tax adjustments. Management believes adjusted net income (loss) is useful because the measure provides useful information to analysts and investors for analysis of its operating results on a consistent, comparable basis from period to period. The Company's computation of adjusted net income (loss) may not be comparable to other similarly titled measures of other companies or to such measure in our credit facility or any of our other contracts.

The following table presents a reconciliation of net income (loss) attributable to Rattler Midstream LP to adjusted net income (loss) for each of the periods indicated:

Operating cash flow before working capital changes, which is a supplemental non-GAAP financial measure, represents net cash provided by operating activities as determined under GAAP without regard to changes in operating assets and liabilities. The GAAP financial measure most directly comparable to operating cash flow before working capital changes is net cash provided by operating activities. Management believes operating cash flow before working capital changes is an accepted measure which reflects cash flow from operating activities, additions to property, plant and equipment and net investments in its equity method investments across periods on a consistent basis. The Company also uses this measure because adjusted operating cash flow relates to the timing of cash receipts and disbursements that the Company may not control and may not relate to the period in which the operating activities occurred. This allows the Company to compare its operating performance with that of other companies without regard to financing methods and capital structure.

Free Cash Flow, which is a supplemental non-GAAP financial measure, is operating cash flow before working capital changes net of additions to property, plant, and equipment, contributions to equity method investments and distributions from equity method investments, proceeds from the sale of equity method investments, proceeds from the sale of real estate and other. Recurring Free Cash Flow, which is a supplemental non-GAAP financial measure, is Free Cash Flow less contributions to equity method investments, proceeds from the sale of equity method investments, proceeds from the sale of real estate and other investing cash flows. The GAAP financial measure most directly comparable to Free Cash Flow and Recurring Free Cash Flow is net cash provided by operating activities. Management believes that Free Cash Flow and Recurring Free Cash Flow are useful to investors as they provide the amount of cash available for reducing debt, investing in additional capital projects or paying dividends. These measures should not be considered as an alternative to, or more meaningful than, net cash provided by operating activities as an indicator of operating performance. The Company's computation of operating cash flow before working capital changes, Free Cash Flow and Recurring Free Cash Flow may not be comparable to other similarly titled measures of other companies.

The following tables present a reconciliation of net cash provided by operating activities to operating cash flow before working capital changes, to Free Cash Flow and to Recurring Free Cash Flow:

Investor Contact:
Adam Lawlis
+1 432.221.7467
IR@rattlermidstream.com
Source: Rattler Midstream LP; Diamondback Energy, Inc.