Filed pursuant to Rule 424(b)(3)
File No. 333-176938
UNITED STATES NATURAL GAS FUND, LP
Supplement dated July 30, 2012
Prospectus dated May 25, 2012
This supplement contains information, which amends, supplements or modifies certain information contained in the Prospectus of United States Natural Gas Fund, LP (“USNG”) dated May 25, 2012. Please read it and keep it with your Prospectus for future reference.
Effective August 1, 2012, the prospectus is amended to reflect the new address for USNG and its general partner, United States Commodity Funds LLC (“USCF”). The new address for the principal office and books and records for USNG and USCF is:
1999 Harrison Street, Suite 1530
Oakland, California 94612
The telephone number for USNG and USCF remains 510.522.9600.
All references in the prospectus are updated accordingly effective August 1, 2012.