Filed pursuant to Rule 424(b)(3)
File No. 333-176938
UNITED STATES NATURAL GAS FUND, LP
Supplement dated May 15, 2013
Prospectus dated April 29, 2013
This supplement contains information which amends, supplements or modifies certain information contained in the Prospectus of United States Natural Gas Fund, LP (USNG) dated April 29, 2013. Please read it and keep it with your Prospectus for future reference.
The first paragraph of the Marketing Agent and Authorized Purchasers section on page 65 of the Prospectus is amended by adding the following sentence to the end of the first paragraph:
Additional underwriting compensation of $76,786 will be paid by the General Partner.