For shareowner inquiries, including stock certificates, stock transfers, dividend checks, and tax statements, please contact the transfer agent at:

Computershare
P.O. Box 30170
College Station, TX 77842-3170

(866) 298-4984
Web: www.computershare.com/investor
Online inquiries: https://www-us.computershare.com/investor/Contact

Overnight correspondence should be sent to:
Computershare
211 Quality Circle, Suite 210
College Station, TX 77845

For investor relations inquiries, contact:
Investor Relations
CF Industries Holdings, Inc.
4 Parkway North, Suite 400
Deerfield, IL 60015-2590

Investor Relations Line: (847) 405-2550
Email: InvestorRelations@cfindustries.com

For media relations inquiries, contact:
Phone: (847) 405-2400

Email: Corp_communications@cfindustries.com

To communicate with the Board of Directors, any individual director, or any group or committee of directors, address correspondence to the board, any individual director, or group or committee of directors by either name or title c/o the Corporate Secretary at:

CF Industries Holdings, Inc.
4 Parkway North, Suite 400
Deerfield, IL 60015-2590

Any contents that are not in the nature of advertising, promotions of a product or service, or patently offensive material will be forwarded promptly.