PICKENS MORNINGSTAR^® RENEWABLE ENERGY RESPONSE^TM ETF (RENW) Listed on NYSE Arca, Inc. Summary Prospectus August 14, 2019

Before you invest, you may want to review the Fund’s Prospectus and Statement of Additional Information (the “SAI”), which contain more information about the Fund and its risks. The current Prospectus and SAI, each dated April 30, 2019, as supplemented from time to time, are incorporated by reference into this Summary Prospectus. You can find the Fund’s Prospectus, shareholder reports, and other information about the Fund online at www.renewableenergyetf.com. You can also get this information at no cost by calling 1-800-617-0004 or by sending an e-mail request to ETF@usbank.com.

IMPORTANT NOTE: Beginning on January 1, 2021, paper copies of the Fund’s shareholder reports will no longer be sent by mail, unless you specifically request paper copies of the shareholder reports from your financial intermediary, such as a broker-dealer or bank. Instead, the shareholder reports will be made available on a website, and you will be notified by mail each time a report is posted and provided with a website link to access the report.

You may elect to receive all future Fund shareholder reports in paper, free of charge. If you already elected to receive shareholder reports electronically, you will not be affected by this change and you need not take any action. Please contact your financial intermediary to inform them that you wish to continue receiving paper copies of Fund shareholder reports and for details about whether your election to receive reports in paper will apply to all funds held with your financial intermediary.

Investment Objective

The Pickens Morningstar^® Renewable Energy Response ETF (the “Fund”) seeks to track the performance, before fees and expenses, of the Morningstar^® North America Renewable Energy^SM Index (the “Index”).

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund (“Shares”). This table and the example below do not include the brokerage commissions that investors may pay on their purchases and sales of Shares.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees1	0.65%
Distribution and/or Service (12b-1) Fees	0.00%
Other Expenses	0.00%
Total Annual Fund Operating Expenses	0.65%

¹ Restated to reflect the Fund’s contractual management fee effective August 14, 2019.

Expense Example

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your Shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

1 Year	3 Years	5 Years	10 Years
$66	$208	$362	$810

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. For the fiscal period February 27, 2018 (commencement of operations) through December 31, 2018, the Fund’s portfolio turnover rate was 56% of the average value of its portfolio.

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Principal Investment Strategy

The Fund uses a “passive management” (or indexing) approach to track the performance, before fees and expenses, of the Index.

As described in more detail below, the Index employs a “renewable energy response” strategy that seeks to identify companies that are leaders in the transition to a low-carbon economy and that reflects a broader universe of industries than traditional “renewable energy” indexes. The Index is owned, administered, and calculated by Morningstar, Inc. (“Morningstar”) and was co-developed by Morningstar with TriLine Index Solutions, LLC, the Fund’s investment adviser (the “Adviser”), which is indirectly controlled by T. Boone Pickens. The Index’s methodology incorporates research from Sustainalytics, a global leader in ESG research, ratings and analytics, on renewable energy and green transportation products and services.

Morningstar^® North America Renewable Energy^SM Index

The Index is a rules-based, modified equal-weighted, liquidity-adjusted index of U.S. and Canadian-listed common stocks of companies in North America that are leaders in the transition to a low-carbon economy. Index constituents either derive significant revenue directly from renewable energy or green transportation products or services, or they meet a significant portion of their energy needs from renewable energy sources, such as the sun, wind, and water.

The Index is a subset of the Morningstar Developed Americas Index (the “Index Universe”), a broad market index representing 97% of North America equity market capitalization, including large-, mid-, and small-capitalization companies.

The Index is comprised of two sleeves, the weights of which are assigned at the time of each semi-annual reconstitution and rebalance of the Index. The first sleeve constitutes 75% of the total Index weight and includes companies from the Index Universe that derive at least 5% of their revenues from renewable energy or at least 10% of their revenues from green transportation. The second sleeve constitutes 25% of the total Index weight and includes companies from the Index Universe that meet at least (i) 25% of their primary energy requirement from renewable energy if the company has a carbon risk rating from its own operations of 10 or higher (out of 50+) or (ii) 50% of their primary energy requirement from renewable energy if the company has a carbon risk rating from its own operations of less than 10 (out of 50+). Carbon risk ratings and renewable energy use are determined by Sustainalytics.

The Index is reconstituted and rebalanced semi-annually and implemented after the close of business on the third Friday of June and December and is effective the following Monday (or the next business day if that Monday is a holiday). At the time of each reconstitution and rebalance of the Index, the weight of each sleeve is reset to 75% or 25% as described above, and the 25% sleeve is limited to a maximum sector weight of 20% with excess weight reallocated equally across companies in other sectors. As of June 24, 2019, the Index was comprised of 82 companies.

The Fund’s Investment Strategy

The Fund attempts to invest all, or substantially all, of its assets in the component securities that make up the Index. Under normal circumstances, at least 80% of the Fund’s total assets (exclusive of any collateral held from securities lending) will be invested in the component securities of the Index. The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Index, before fees and expenses, will be 95% or better.

The Fund will generally use a “replication” strategy to achieve its investment objective, meaning the Fund generally will invest in all of the component securities of the Index in approximately the same proportion as in the Index. However, the Fund may use a “representative sampling” strategy, meaning it may invest in a sample of the securities in the Index whose risk, return and other characteristics closely resemble the risk, return and other characteristics of the Index as a whole, when the Fund’s sub-adviser believes it is in the best interests of the Fund (e.g., when replicating the Index involves practical difficulties or substantial costs, an Index constituent becomes temporarily illiquid, unavailable, or less liquid, or as a result of legal restrictions or limitations that apply to the Fund but not to the Index).

The Fund generally may invest up to 20% of its total assets (exclusive of any collateral held from securities lending) in securities or other investments not included in the Index, but which the Fund’s sub-adviser believes will help the Fund track the Index. For example, the Fund may invest in securities that are not components of the Index to reflect various corporate actions and other changes to the Index (such as reconstitutions, additions, and deletions).

To the extent the Index concentrates (i.e., holds more than 25% of its total assets) in the securities of a particular industry or group of related industries, the Fund will concentrate its investments to approximately the same extent as the Index. As of June 24, 2019, the Index was concentrated (i.e., more than 25% of the Fund’s assets were invested) in the utilities sector and had significant exposure to companies in the industrials and technology sectors.

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Principal Investment Risks

The principal risks of investing in the Fund are summarized below. The principal risks are presented in alphabetical order to facilitate finding particular risks and comparing them with other funds. Each risk summarized below is considered a “principal risk” of investing in the Fund, regardless of the order in which they appear. As with any investment, there is a risk that you could lose all or a portion of your investment in the Fund. Some or all of these risks may adversely affect the Fund’s net asset value per share (“NAV”), trading price, yield, total return and/or ability to meet its objectives. For more information about the risks of investing in the Fund, see the section in the Fund’s Prospectus titled “Additional Information About the Fund-Principal Investment Risks.”

• Concentration Risk. The Fund’s investments will be concentrated in an industry or group of industries to the extent the Index is so concentrated. In such event, the value of Shares may rise and fall more than the value of shares that invest in securities of companies in a broader range of industries.

• Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific issuers, industries, or sectors in which the Fund invests. Common stocks, such as those held by the Fund, are generally exposed to greater risk than other types of securities, such as preferred stock and debt obligations, because common stockholders generally have inferior rights to receive payment from issuers.

• Foreign Securities Risk. Investments in non-U.S. securities involve certain risks that may not be present with investments in U.S. securities. For example, investments in non-U.S. securities may be subject to risk of loss due to foreign currency fluctuations or to political or economic instability. Investments in non-U.S. securities also may be subject to withholding or other taxes and may be subject to additional trading, settlement, custodial, and operational risks. These and other factors can make investments in the Fund more volatile and potentially less liquid than other types of investments.

• Geographic Investment Risk. To the extent the Fund invests a significant portion of its assets in the securities of companies of a single country or region, it is more likely to be impacted by events or conditions affecting that country or region.

◦ Canada-Specific Risk. The Canadian economy is reliant on the sale of natural resources and commodities, which can pose risks such as the fluctuation of prices and the variability of demand for exportation of such products. Changes in spending on Canadian products by the economies of other countries or changes in any of these economies may cause a significant impact on the Canadian economy.

• Market Capitalization Risk

◦ Large-Capitalization Investing. The securities of large-capitalization companies may be relatively mature compared to smaller companies and therefore subject to slower growth during times of economic expansion. Large-capitalization companies may also be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes.

◦ Mid-Capitalization Investing. The securities of mid-capitalization companies may be more vulnerable to adverse issuer, market, political, or economic developments than securities of large-capitalization companies. The securities of mid-capitalization companies generally trade in lower volumes and are subject to greater and more unpredictable price changes than large capitalization stocks or the stock market as a whole.

◦ Small-Capitalization Investing. The securities of small-capitalization companies are subject to the same risks as mid-capitalization companies, though to a greater extent. Small-capitalization companies may have limited product lines, markets, financial resources, and management personnel and tend to concentrate on fewer geographical markets relative to large- and mid-capitalization companies.

• Models and Data Risk. The composition of the Index is heavily dependent on proprietary quantitative models as well as information and data supplied by third parties (“Models and Data”). When Models and Data prove to be incorrect or incomplete, any decisions made in reliance thereon may lead to the inclusion or exclusion of securities from the Index universe that would have been excluded or included had the Models and Data been correct and complete. If the composition of the Index reflects such errors, the Fund’s portfolio can be expected to reflect the errors, too.

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• Non-Diversification Risk. Although the Fund intends to invest in a variety of securities and instruments, the Fund will be considered to be non-diversified, which means that it may invest more of its assets in the securities of a single issuer or a smaller number of issuers than if it were a diversified fund. As a result, the Fund may be more exposed to the risks associated with and developments affecting an individual issuer or a smaller number of issuers than a fund that invests more widely. This may increase the Fund’s volatility and cause the performance of a relatively smaller number of issuers to have a greater impact on the Fund’s performance.

• Passive Investment Risk. The Fund is not actively managed, and the Fund’s sub-adviser would not sell shares of an equity security due to current or projected underperformance of a security, industry, or sector, unless that security is removed from the Index or the selling of shares of that security is otherwise required upon a reconstitution of the Index in accordance with the Index methodology.

• Sector Risk. To the extent the Fund invests more heavily in particular sectors of the economy, its performance will be especially sensitive to developments that significantly affect those sectors.

◦ Industrial Sector Risk. The industrial sector can be significantly affected by, among other things, worldwide economic growth, supply and demand for specific products and services, rapid technological developments, international political and economic developments, environmental issues, and tax and governmental regulatory policies. As the demand for, or prices of, industrials increase, the value of the Fund’s investments generally would be expected to also increase. Conversely, declines in the demand for, or prices of, industrials generally would be expected to contribute to declines in the value of such securities.

◦ Information Technology Sector Risk. Market or economic factors impacting information technology companies and companies that rely heavily on technological advances could have a significant effect on the value of the Fund's investments. The value of stocks of information technology companies and companies that rely heavily on technology is particularly vulnerable to rapid changes in technology product cycles, rapid product obsolescence, government regulation and competition, both domestically and internationally, including competition from foreign competitors with lower production costs. Information technology companies are heavily dependent on patent and intellectual property rights, the loss or impairment of which may adversely affect profitability.

◦ Utilities Sector Risk. Stock prices for companies in the utilities sector are affected by supply and demand, operating costs, governmental regulation, environmental factors, liabilities for environmental damage and general civil liabilities, and rate caps or rate changes. The value of regulated utility stocks may tend to have an inverse relationship to the movement of interest rates. In addition, natural disasters, terrorist attacks, government intervention,or other factors may render a utility company’s equipment unusable or obsolete and negatively impact profitability. Companies in the utilities sector may be adversely affected by changes in exchange rates, domestic and international competition, difficulty in raising adequate amounts of capital and governmental limitation on rates charged to customers.

• Shares May Trade at Prices Other Than NAV. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

• Tracking Error Risk. As with all index funds, the performance of the Fund and its Index may differ from each other for a variety of reasons. For example, the Fund incurs operating expenses and portfolio transaction costs not incurred by the Index. In addition, the Fund may not be fully invested in the securities of the Index at all times or may hold securities not included in the Index.

Performance

The Fund is new and therefore does not have a performance history for a full calendar year. In the future, performance information for the Fund will be presented in this section. Updated performance information is also available on the Fund’s website at www.renewableenergyetf.com.

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Management

Adviser:	TriLine Index Solutions, LLC serves as investment adviser to the Fund.
Sub-Adviser:	Penserra Capital Management LLC (“Penserra” or the “Sub-Adviser”) serves as sub-adviser to the Fund.
Portfolio Managers:	Dustin Lewellyn, CFA, Managing Director of Penserra, has been a portfolio manager of the Fund since its inception in 2018.
	Ernesto Tong, CFA, Managing Director of Penserra, has been a portfolio manager of the Fund since its inception in 2018.
	Anand Desai, Associate of Penserra, has been a portfolio manager of the Fund since its inception in 2018.

Purchase and Sale of Shares

Shares are listed on a national securities exchange, such as the NYSE Arca, Inc. (the “Exchange”), and most investors will buy and sell Shares through brokers at market prices, rather than NAV. Because Shares trade at market prices rather than NAV, Shares may trade at a price greater than NAV (premium) or less than NAV (discount).

The Fund issues and redeems Shares at NAV only in large blocks known as “Creation Units,” which only Authorized Participants (“APs”) (typically, broker-dealers) may purchase or redeem. Creation Units generally consist of 25,000 Shares, though this may change from time to time. The Fund generally issues and redeems Creation Units in exchange for a portfolio of securities closely approximating the holdings of the Fund (the “Deposit Securities”) and/or a designated amount of U.S. cash.

Tax Information

Fund distributions are generally taxable as ordinary income, qualified dividend income, or capital gains (or a combination), unless your investment is in an individual retirement account (“IRA”) or other tax-advantaged account. Distributions on investments made through tax-deferred arrangements may be taxed later upon withdrawal of assets from those accounts.

Financial Intermediary Compensation

If you purchase Shares through a broker-dealer or other financial intermediary (such as a bank) (an “Intermediary”), the Adviser or its affiliates may pay Intermediaries for certain activities related to the Fund, including participation in activities that are designed to make Intermediaries more knowledgeable about exchange traded products, including the Fund, or for other activities, such as marketing, educational training or other initiatives related to the sale or promotion of Shares. These payments may create a conflict of interest by influencing the Intermediary and your salesperson to recommend the Fund over another investment. Any such arrangements do not result in increased Fund expenses. Ask your salesperson or visit the Intermediary’s website for more information.

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