SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 --------------- FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 12, 2006 LIGAND PHARMACEUTICALS INCORPORATED (Exact name of registrant as specified in its charter) DELAWARE (State or other jurisdiction of incorporation) 000-20720 (Commission File Number) 10275 SCIENCE CENTER DRIVE SAN DIEGO, CALIFORNIA (Address of principal executive offices) (858) 550-7500 (Registrant's telephone number, including area code) 77-0160744 (I.R.S. Employer Identification No.) 92121-1117 (Zip Code) ITEM 8.01 OTHER EVENTS On June 12, 2006, Ligand Pharmaceuticals Incorporated announced that its common stock would be relisted on the NASDAQ National Market, effective June 14, 2006, and will trade under the symbol `LGND'. The press released is attached as Exhibit 99.1. ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS (d) Exhibits EXHIBIT NUMBER DESCRIPTION ------------------ -------------------- 99.1 Press release of the Company dated June 12, 2006 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has caused this report to be signed on its behalf by the undersigned. LIGAND PHARMACEUTICALS INCORPORATED Date: June 12, 2006 By: /s/ Warner R. Broaddus Name: Warner R. Broaddus Title: Vice President, General Counsel & Secretary