Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

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Our common stock is listed on the New York Stock Exchange (NYSE) under the symbol “PWR.” The following table sets forth the high and low sales prices of our common stock per quarter, as reported by the NYSE, for the two most recent fiscal years.

On February 21, 2017, there were 724 holders of record of our common stock, eight holders of record of exchangeable shares of Canadian subsidiaries of Quanta, one holder of record of our Series F preferred stock and one holder of record of our Series G preferred stock. There is no established trading market for the exchangeable shares or the Series F and Series G preferred stock; however, the exchangeable shares may be exchanged at the option of the holder for Quanta common stock on a one-for-one basis. See Note 11 of the Notes to Consolidated Financial Statements in Item 8. Financial Statements and Supplementary Data for additional discussion of our equity securities.

Unregistered Sales of Securities During the Fourth Quarter of 2016

During the three months ended December 31, 2016, we issued 104,942 shares of our common stock to certain former owners of an acquired company in exchange, on a one-for-one basis, for exchangeable shares in a Canadian subsidiary of Quanta that were held by certain former owners. Additionally, subsequent to December 31, 2016, we issued 420,904 shares of our common stock to certain former owners of an acquired company in exchange, on a one-for-one basis, for exchangeable shares in a Canadian subsidiary of Quanta that were held by certain former owners. Each of the former owners originally received the exchangeable shares as partial consideration for the sale of the acquired company.

The shares of common stock issued in the above transactions were issued in reliance upon the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended, as the shares were issued to the owners of businesses acquired in a privately negotiated transactions not involving any public offering or solicitation.

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Index to Financial Statements

Issuer Purchases of Equity Securities During the Fourth Quarter of 2016

The following table contains information about our purchases of equity securities during the three months ended December 31, 2016.

Dividends

We did not declare any cash dividends on our common stock during the years ended December 31, 2016 or 2015, or in any previous periods. We currently intend to retain our future earnings, if any, to finance the growth, development and expansion of our business. Accordingly, we currently do not intend to declare or pay any cash dividends on our common stock in the immediate future. The declaration, payment and amount of future cash dividends, if any, will be at the discretion of our board of directors after taking into account various factors. These factors include our financial condition, results of operations, cash flows from operations, current and anticipated capital requirements and expansion plans, the income tax laws then in effect and the requirements of Delaware law. In addition, as discussed in Liquidity and Capital Resources — Debt Instruments — Credit Facility in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, our credit agreement restricts the payment of cash dividends unless certain conditions are met.

Performance Graph

The following Performance Graph and related information shall not be deemed “soliciting material” or to be “filed” with the Securities and Exchange Commission, nor shall such information be incorporated by reference into any future filing under the Securities Act of 1933 or Securities Exchange Act of 1934, each as amended, except to the extent that we specifically incorporate it by reference into such filing.

The following graph compares, for the period from December 31, 2011 to December 31, 2016, the cumulative stockholder return on our common stock with the cumulative total return of the Standard & Poor’s

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500 Index (the S&P 500 Index) and two peer groups selected by our management that include public companies within our industries. The companies in each peer group were selected to represent a broad group of publicly held corporations with operations similar to ours. The current peer group (the 2016 Peer Group) includes AECOM Technology Corporation, Chicago Bridge & Iron Company N.V., EMCOR Group Inc., Fluor Corporation, Jacobs Engineering Group Inc., KBR, Inc., MasTec, Inc., MYR Group Inc. and Primoris Services Corporation. The peer group used in the prior year (the 2015 Peer Group) included each of the foregoing companies as well as Willbros Group, Inc. We determined not to include Willbros Group, Inc. in the 2016 Peer Group due to dissimilarities with respect to its trading liquidity and operational performance history.

The graph below assumes an investment of $100 (with reinvestment of all dividends) in our common stock, the S&P 500 Index, the 2016 Peer Group and the 2015 Peer Group on December 31, 2011 and tracks their relative performance through December 31, 2016. The returns of each company in the Peer Group are weighted based on the market capitalization of that company at the beginning of the measurement period. The stock price performance reflected in the following graph is not necessarily indicative of future stock price performance.

COMPARISON OF 5 YEAR CUMULATIVE TOTAL RETURN

Among Quanta Services, Inc., the 2016 Peer Group, the 2015 Peer Group and the S&P 500 Index

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