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

Market Information

Our common stock is quoted on the NASDAQ Global Select Market under the symbol IDXX. The following table shows the quarterly range of high and low sale prices per share of our common stock as reported on the NASDAQ Global Select Market for the years 2013 and 2014.

Holders of Common Stock

As of February 6, 2015, there were 558 holders of record of our common stock. Because the majority of our common stock is held by brokers and other institutions on behalf of stockholders, we are unable to estimate the total number of stockholders represented by these record holders.

Purchases of Equity Securities by the Issuer

During the three months ended December 31, 2014, we repurchased shares of common stock as described below:

(1) As of December 31, 2014, our Board of Directors had approved the repurchase of up to 57 million shares of our common stock in the open market or in negotiated transactions pursuant to the Company’s share repurchase program. The program was approved and announced on August 13, 1999, and the maximum number of shares that may be purchased under the program was subsequently increased on October 4, 1999, November 16, 1999, July 21, 2000, October 20, 2003, October 12, 2004, October 12, 2005, February 14, 2007, February 13, 2008, February 10, 2010, October 12, 2011, May 7, 2013 and again on July 16, 2014. There is no specified expiration date for this repurchase program. There were no other repurchase programs outstanding during the three months ended December 31, 2014, and no repurchase programs expired during the period. Repurchases of 1,134,320 shares were made during the three months ended December 31, 2014 in transactions made pursuant to our repurchase program.

(2) During the three months ended December 31, 2014, we received 3,448 shares of our common stock that were surrendered by employees in payment for the minimum required withholding taxes due on the vesting of restricted stock units and settlement of deferred stock units. In the above table, these shares are included in columns (a) and (b), but excluded from columns (c) and (d). These shares do not reduce the number of shares that may yet be purchased under the repurchase program.

During the year ended December 31, 2014, we repurchased 4,880,524 shares of our common stock in transactions made pursuant to our repurchase program and received 46,190 shares of common stock that were surrendered by employees in payment for the minimum required withholding taxes due on the vesting of restricted stock units and settlement of deferred stock units. See Note 17 to the consolidated financial statements for the year ended December 31, 2014 included in this Annual Report on Form 10-K for further information.

Dividends

We have never paid any cash dividends on our common stock. From time to time our board of directors may consider the declaration of a dividend. However, we have no intention to pay a dividend at this time.

Stock Performance

This graph compares our total stockholder returns, the Standard & Poor’s (“S&P”) MidCap 400 Index, the S&P MidCap 400 Health Care Index and the Total Return Index for the NASDAQ Stock Market (U.S. Companies) prepared by the Center for Research in Security Prices (the “NASDAQ Index”). This graph assumes the investment of $100 on December 31, 2009 in IDEXX’s common stock, the S&P MidCap 400 Index, the S&P MidCap 400 Health Care Index and the NASDAQ Index and assumes dividends, if any, are reinvested. Measurement points are the last trading days of the years ended December 2009, 2010, 2011, 2012, 2013 and 2014.