Prospectus Supplement No. 3 Filed Pursuant to Rule 424(b)(3)
(To Prospectus Dated November 2, 1999) Registration No. 333-89345
Prospectus Supplement
Dated December 10, 1999
This prospectus relates to the resale by the holder of our:
o $300,000,000 principal amount of 6.25% convertible notes due 2009,
o $425,500,000 principal amount at maturity of 2.25% convertible notes
due 2009, and
o the shares of Class A common stock issuable upon conversion of the
notes.
This prospectus supplement should be read in conjunction with, and may
not be delivered or utilized without, the prospectus dated November 2, 1999,
including any amendments or supplements thereto. The terms of the notes are set
forth in the prospectus.
The information in the table appearing under the heading "Selling
Securityholders" on page 42 in the prospectus is hereby amended by adding the
information below with respect to selling securityholders not previously listed
in the prospectus or in any amendments or supplements thereto, and by
superceding the information with respect to selling securityholders previously
listed in the prospectus or in any amendments or supplements thereto that are
listed below:
Principal Percentage Number of
Amount at of 6.25% Shares of Class Percentage of
Maturity of Notes A Common Stock Number of Class A Common
6.25% Notes Outstanding Issuable Upon Shares of Stock
Beneficially as of Conversion of Class A Outstanding as
Owned That December 8, the 6.25% Notes Common of December 8,
Selling Securityholders May Be Sold 1999 That May Be Sold Stock Owned 1999**
----------------------- ----------- ----------- ---------------- ----------- --------------
Deutsche Bank Securities Inc. $16,000,000 6.33 655,737 -- *
Nomura Securities International Inc. $ 2,503,000 1.00 102,581 -- *
Susquehanna Capital Group $ 2,350,000 * 96,311 -- *
=========== ===== ======== ======= =======
TOTAL $20,853,000 8.26 854,629 -- *
Principal Percentage Number of
Amount at of 2.25% Shares of Class Percentage of
Maturity of Notes A Common Stock Number of Class A Common
2.25% Notes Outstanding Issuable Upon Shares of Stock
Beneficially as of Conversion of Class A Outstanding as
Owned That December 8, the 2.25% Notes Common of December 8,
Selling Securityholders May Be Sold 1999 That May Be Sold Stock Owned 1999**
----------------------- ----------- ----------- ----------------- ----------- --------------
Deutsche Bank Securities Inc. $89,500,000 25.26 3,729,166 -- 2.51
* Less than 1%.
** Includes shares issuable upon conversion of the notes and shares beneficially owned as of December 8, 1999.
