UNITED STATES
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):   May 11, 2011

La Jolla Pharmaceutical Company
__________________________________________
(Exact name of registrant as specified in its charter)

     
Delaware 0-24274 33-0361285
_____________________
(State or other jurisdiction
_____________
(Commission
______________
(I.R.S. Employer
of incorporation) File Number) Identification No.)
      
4365 Executive Drive, Suite 300, San Diego, California   92121
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(Address of principal executive offices)
  ___________
(Zip Code)
     
Registrant’s telephone number, including area code:   (858) 452-6600

Not Applicable
______________________________________________
Former name or former address, if changed since last report

 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[  ]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))


Item 8.01                     Other Events.

On May 11, 2011, La Jolla Pharmaceutical Company (the “Company”) reported that on that date it had converted approximately 14 shares of Series C-11 Convertible Preferred Stock into 2,350,000 shares of common stock. Following these conversions, the Company had a total of 6,364,327 shares of common stock issued and outstanding.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

         
    La Jolla Pharmaceutical Company
          
May 11, 2011   By:   /s/ Gail A. Sloan
       
        Name: Gail A. Sloan
        Title: Chief Financial Officer and Secretary