Item 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES

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Market Information

PCA’s common stock is listed on the New York Stock Exchange (NYSE) under the symbol “PKG”.

Stockholders

On February 21, 2020, there were 96 holders of record of our common stock.

Purchases of Equity Securities

Stock Repurchase Program

On February 25, 2016, PCA announced that its Board of Directors authorized the repurchase of $200.0 million of the Company's outstanding common stock. At the time of the announcement, there was no remaining authority under previously announced programs. Repurchases may be made from time to time in open market or privately negotiated transactions in accordance with applicable securities regulations. The timing and amount of repurchases will be determined by the Company in its discretion based on factors such as PCA’s stock price and market and business conditions.

The Company did not repurchase any shares of its common stock under this authority during the years ended December 31, 2019, 2018, and 2017. As of December 31, 2019, we are authorized to repurchase $193.0 million of the Company’s common stock.

Pursuant to its equity incentive plan, the Company withholds shares from vesting employee equity awards to cover employee tax liabilities. Total shares withheld in 2019 were 87,668 to cover $8.2 million in employee tax liabilities. Total shares withheld in 2018 were 69,255 to cover $7.9 million of employee tax liabilities. Total shares withheld in 2017 were 97,946 for $10.8 million in employee tax liabilities.

The following table presents information related to our repurchases of common stock made under repurchase plans authorized by PCA's Board of Directors, and shares withheld to cover taxes on vesting of equity awards, during the three months ended December 31, 2019:

Performance Graph

The graph below compares PCA’s cumulative 5-year total shareholder return on common stock with the cumulative total returns of the S&P 500 index; the S&P Midcap 400 index; and a customized peer group of three companies that includes: International Paper Company, WestRock Company, and Domtar Corporation. The graph tracks the performance of a $100 investment (including the reinvestment of all dividends) in our common stock, in each index, and in each peer group's common stock from December 31, 2014, through December 31, 2019. The stock price performance included in this graph is not necessarily indicative of future stock price performance.

The information in the graph and table above is not deemed “filed” with the Securities and Exchange Commission and is not to be incorporated by reference in any of PCA’s filings under the Securities Act of 1933 or the Securities Exchange Act of 1934, whether made before or after the date of this Annual Report on Form 10-K, except to the extent that PCA specifically incorporates such information by reference.