DEFA14A

SCHEDULE 14A
(Rule 14a-101)
INFORMATION REQUIRED IN PROXY STATEMENT
     SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a)
of the
SecuritiesExchange Act of 1934
(Amendment No. )

Filed by the Registrant [X]    
Filed by a Party other than the Registrant [   ]    
       
       
Check the appropriate box:    
[   ] Preliminary Proxy Statement [   ] Confidential, For Use of the Commission Only
       
[   ] Definitive Proxy Statement   (as permitted by Rule14a-6(e)(2))
       
[   ] Definitive Additional Materials    
[X] Soliciting Material Under Rule 14a-12    

THERASENSE, INC.

(Name of Registrant as Specified In Its Charter)
 

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):
     
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  (2) Aggregate number of securities to which transaction applies:
     
     
  (3)

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[   ] Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the form or schedule and the date of its filing.
     
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Filed by TheraSense, Inc. pursuant to Rule 14a-12
of the Securities and Exchange Act

        The following is a presentation given to employees of TheraSense, Inc. on January 13, 2004, regarding the merger with Abbott Laboratories:

     
     
Mark Lortz    
     
Chairman,
President & CEO
   
     
     






 
  The News
 




 
  How Does this Help TheraSense Achieve its Mission?
 






  

 
Why is This good for
the TheraSense Team?
 






 
  Employee Matters
 




 
  Employee Matters
 




 
  Stock Option Treatment
 






 
  Employee Stock Purchase
Program
 






 
  What Now?
 






 
 
 

In connection with the proposed merger, TheraSense will file a proxy statement and other relevant documents with the Securities and Exchange Commission (SEC). INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT WHEN IT BECOMES AVAILABLE AS IT WILL CONTAIN IMPORTANT INFORMATION ABOUT THE MERGER AND RELATED MATTERS. INVESTORS AND SECURITY HOLDERS WILL HAVE ACCESS TO FREE COPIES OF THE PROXY STATEMENT (WHEN AVAILABLE) AND OTHER DOCUMENTS FILED WITH THE SEC BY

THERASENSE THROUGH THE SEC WEB SITE AT WWW.SEC.GOV. THE PROXY STATEMENT AND RELATED MATERIALS MAY ALSO BE OBTAINED FOR FREE (WHEN AVAILABLE) FROM THERASENSE BY DIRECTING A REQUEST TO: INVESTOR RELATIONS, THERASENSE, INC., 1360 SOUTH LOOP ROAD, ALAMEDA, CA 94502; PHONE (510) 749-5400.

TheraSense and its directors, executive officers, certain members of management and employees, may be deemed to be participants in the solicitation of proxies in connection with the proposed merger. Information regarding the persons who may, under the rules of the SEC, be considered to be participants in the solicitation of TheraSense’s stockholders in connection with the proposed merger is set forth in TheraSense’s annual report on Form 10-K for the fiscal year ended December 31, 2002 filed with the SEC on March 27, 2003 and proxy statement for its 2003 annual meeting of stockholders filed with the SEC on March 27, 2003. Additional information will be set forth in the proxy statement when it is filed with the SEC.

Forward-Looking Statements

Except for historical information contained herein, statements contained in this document may constitute “forward looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are neither promises nor guarantees, but involve a number of risks, uncertainties and other factors that could cause actual results to differ materially from those set forth in the forward-looking statements, including, with limitation the risk that the merger may not be consummated, if at all, and other risks concerning TheraSense and Abbott and their respective operations that are detailed in the periodic filings with the SEC of TheraSense and Abbott, including their most recent filings on Form 10-Q.