WISDOMTREE TRUST

Supplement Dated March 6, 2012

to each currently effective Prospectus for the

WisdomTree Currency Income, Fixed Income

and Alternative ETFs

The following information supplements, and should be read in conjunction with, the Prospectuses listed above.

On December 1, 2011, Research Affiliates, LLC filed a complaint in the United States District Court for the Central District of California, naming the Trust, its adviser, WisdomTree Asset Management, Inc., and its affiliates, along with other parties, as defendants. The complaint alleges that the fundamentally weighted investment methodology developed by WisdomTree Investments, Inc. (“WisdomTree Investments”) and employed by the Trust infringes three of plaintiff’s patents. The complaint seeks both unspecified monetary damages to be determined and an injunction to prevent further infringement. The Trust filed its answer to the complaint on January 17, 2012. The Trust believes it has strong defenses to this lawsuit based on its belief that (i) the Trust’s Funds do not practice the indexing methods as claimed in the asserted patents; and (ii) the patents should be declared invalid because, among other reasons, there is ample evidence that the concept of fundamentals based indexing was widely known and in commercial use by asset managers and index providers well before the patent applications at issue were filed by plaintiff. Specifically, the Currency Income, Fixed Income and Alternative Funds described herein, do not infringe upon plaintiff’s patents since they are not managed using a fundamentally weighted investment methodology.

While at this early stage of the proceedings it is not possible to determine the probability of any outcome or the probability or amount of any loss, the Trust is confident in the merits of its position. WisdomTree Asset Management and WisdomTree Investments have contractually agreed to indemnify the Trust and pay any losses, claims and damages (including legal fees) incurred by the Trust or a Fund in connection with the complaint. The Trust intends to vigorously defend against plaintiff’s claims.

If you would like additional information, including information about other WisdomTree Funds, please call 1-866-909-9473 or visit www.wisdomtree.com.

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

WIS-SP-001/013-0312