TortoiseEcofin today announced that Oasis Midstream Partners LP (NASD: OMP) will be removed from the Tortoise MLP Index^® (TMLP), the Tortoise North American Pipeline Index^SM (TNAP), and the Tortoise Decarbonization Infrastructure Index (DCRBN) as a result of the approved merger with Crestwood Equity Partners LP (NYSE: CEQP). Due to the merger, OMP will be removed from all three indices at market open on Tuesday, February 1, 2022.

Since CEQP is a constituent of all three indices, and its pro-forma weight post acquisition of OMP, does not trigger special rebalance requirements in any of the indices, OMP will be removed without a special rebalancing from all three indices.

Special rebalancings in TMLP are triggered by corporate actions such as mergers, bankruptcies, liquidations, and conversions in which the resulting weight of a single constituent exceeds the index’s 7.5% threshold and the target constituent weight exceeds certain weighting thresholds. Implementation of special rebalancings will be made in accordance with existing methodologies.

Special rebalancings in TNAP are triggered by corporate actions such as mergers, bankruptcies, liquidations, and conversions in which the resulting weight of a single constituent exceeds the index’s 7.5% threshold and the target constituent weight exceeds certain weighting thresholds. Implementation of special rebalancings will be made in accordance with existing methodologies.

Special rebalancings in DCRBN are triggered by corporate actions such as mergers, bankruptcies, liquidations, and conversions in which the resulting weight of a single constituent exceeds the index’s 5.0% threshold and the target constituent weight exceeds certain weighting thresholds. Implementation of special rebalancings will be made in accordance with existing methodologies.

About TortoiseEcofin

TortoiseEcofin focuses on essential assets – those assets and services that are indispensable to the economy and society. We strive to make a positive impact on clients and communities by investing in energy infrastructure and the transition to cleaner energy and by providing capital for social impact projects focused on education and senior housing. TortoiseEcofin brings together strong legacies from Tortoise, with expertise investing across the energy value chain for more than 20 years, and from Ecofin, which unites ecology and finance and has roots back to the early 1990s. To learn more, visit www.TortoiseEcofin.com.

The Tortoise MLP Index^® is a float-adjusted, capitalization weighted index of energy master limited partnerships (MLPs). The index is comprised of publicly traded companies organized in the form of limited partnerships or limited liability companies engaged in transportation, production, processing and/or storage of energy commodities.

The Tortoise North American Pipeline Index^SM is a float-adjusted, capitalization weighted index of pipeline companies that are organized and have their principal place of business in the United States or Canada. A pipeline company is defined as a company that either 1) has been assigned a standard industrial classification (“SIC”) system code that indicates the company operates in the energy pipeline industry or 2) has at least 50% of its assets, cash flow or revenue associated with the operation or ownership of energy pipelines. Pipeline companies engage in the business of transporting natural gas, crude oil and refined products, storing, gathering and processing such gas, oil and products and local gas distribution. The index includes pipeline companies structured as corporations, limited liability companies and master limited partnerships (MLPs).

The Tortoise MLP Index^® and the Tortoise North American Pipeline Index^SM are the exclusive property of TIS Advisors, which has contracted with S&P Opco, LLC (a subsidiary of S&P Dow Jones Indices LLC) to calculate and maintain the Tortoise MLP Index® and the Tortoise North American Pipeline Index^SM (the “Indices”). The Indices are not sponsored by S&P Dow Jones Indices or its affiliates or its third party licensors (collectively, “S&P Dow Jones Indices”). S&P Dow Jones Indices will not be liable for any errors or omissions in calculating the Indices. “Calculated by S&P Dow Jones Indices” and its related stylized mark(s) are service marks of S&P Dow Jones Indices and have been licensed for use by TIS Advisors and its affiliates. S&P^® is a registered trademark of Standard & Poor’s Financial Services LLC (“SPFS”), and Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones”).

The Tortoise Decarbonization Infrastructure Index^SM is a float-adjusted, capitalization weighted index of decarbonizing infrastructure companies that are organized and have their principal place of business in the United States or Canada. We define a decarbonization infrastructure company as a company that primarily owns natural gas and/ or natural gas liquids infrastructure including pipelines and local distribution companies, electric generation, transmission and distribution, battery storage, electric charging infrastructure, residential rooftop solar facilities and/ or renewable fuels.

The Tortoise Decarbonization Infrastructure Index^SM is the exclusive property of TIS Advisors and is calculated by Solactive AG (“Solactive”). The financial instruments that are based on the Index are not sponsored, endorsed, promoted or sold by Solactive AG (“Solactive”) in any way and Solactive makes no express or implied representation, guarantee or assurance with regard to: (a) the advisability in investing in the financial instruments; (b) the quality, accuracy and/or the completeness of the Index or the calculations thereof; and/or (c) the results obtained or to be obtained by any person or entity from the use of the Index.

This data is provided for informational purposes only and is not intended for trading purposes. This document shall not constitute an offering of any security, product or service. The addition, removal or inclusion of a security in the index is not a recommendation to buy, sell or hold that security, nor is it investment advice. The information contained in this document is current as of the publication date. Tortoise makes no representations with respect to the accuracy or completeness of these materials and will not accept responsibility for damages, direct or indirect, resulting from an error or omission in this document. The methodology involves rebalancing and maintenance of the index that is made periodically during each year and may not, therefore, reflect real time information.

Safe Harbor Statement

This press release shall not constitute an offer to sell or a solicitation to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer or solicitation or sale would be unlawful prior to registration or qualification under the laws of such state or jurisdiction.

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