EXHIBIT 99.1


                               STOCK SELLING PLAN

     This Stock Selling Plan (the "Plan") is being adopted by MICHAEL A. ROCCA
("Client") to facilitate the sale of shares of the common stock (the "Shares")
of Ligand Pharmaceuticals Incorporated ("Issuer").

     Client desires to sell a certain number of Shares at or above a certain
price. To dispel any inference that Client is selling Shares when in possession
of material nonpublic information, Client has determined to instruct Goldman
Sachs & Co., 3414 Peachtree Rd., NE, Atlanta, GA 30326 ("BROKER") to sell a
pre-determined amount of Shares pursuant to the Selling Instructions described
in Exhibit A.

     This selling plan shall commence on the open of the Nasdaq National Market
following the 30th calendar day after the execution hereof.

     Client states that he:

     1. As of the date of this Plan, is not aware of any material nonpublic
information regarding Issuer and is not subject to any legal, regulatory or
contractual restriction or undertaking that would prevent BROKER from acting
upon the instructions set forth in this Plan;

     2. Is entering into this Plan in good faith and not as part of any scheme
to evade the prohibitions of Rule 10b5-1 adopted under the Securities Exchange
Act of 1934, as amended;

     3. Has not entered into, and will not enter into, any corresponding or
hedging transaction or position with respect to the Shares;

     4. Confirms that the sale of the Shares pursuant to the Selling
Instructions in Exhibit A will comply with Rule 144 under the Securities Act of
1933;

     5. Acknowledges that BROKER may make a market in the Shares and will
continue to engage in market-making activities while executing transactions on
behalf of Client pursuant to the Plan; and

     6. May not discuss with BROKER the timing of the trading in the Shares on
his behalf (other than to confirm these instructions and describe them if
necessary).

     7. Acknowledges that Issuer may file this plan with the Securities and
Exchange Commission at which time it shall become public.

     If BROKER shall be advised in writing by the corporate Secretary of Issuer
that (1) the Directors of Issuer have made a determination to proceed with a
merger involving pooling of interests accounting treatment and (2) based upon
the advice of an independent accounting firm the Directors have determined that
in order to qualify for such treatment it is necessary that sales of Shares by
Client be suspended, then BROKER shall suspend all such sales until advised in
writing by the corporate Secretary of Issuer that the Directors of Issuer have
made a determination that such selling may resume.



     If Shares are, for any reason and whether in whole or in part, converted
into or exchanged for shares of publicly traded securities of another company
("Newco"), then (1) BROKER shall sell such Newco shares and any remaining
original Shares in amounts substantially equivalent to those specified in the
original Plan over the remaining period during which the original Shares would
have been sold under the terms of this Agreement, after making appropriate
adjustment for the exchange ratio between the original Shares and Newco shares,
(2) references herein to "Issuer" shall refer to both Ligand Pharmaceuticals
Incorporated and to Newco, and (3) references herein to "Shares" shall refer to
both the original Shares as defined above and to such Newco shares. In the event
such securities are not publicly traded, such securities, along with any other
portion of the Shares that cannot be sold pursuant to the terms of this Plan,
shall be promptly returned to Client.

     This Selling Plan and the Selling Instructions may be terminated or
modified by Client at any time by delivering written instructions to that effect
to BROKER, so long as Client is not then in possession of material nonpublic
information. This Plan shall also terminate upon the earlier of (1) the death of
Client, or (2) the conversion of all Shares owned by Client into cash, whether
as a result of sales by BROKER, merger or acquisition, or otherwise.

     This Plan shall be governed by and construed in accordance with the laws of
the State of New York.



Dated:    2 December, 2003                        /S/MICHAEL A. ROCCA
                                                  ----------------------------
                                                  MICHAEL A. ROCCA








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                                    EXHIBIT A

                              SELLING INSTRUCTIONS

     BROKER on my behalf shall, at any time on or after January 2, 2004, and on
the condition that such shares are sold at a price of $15 or more, exercise my
option to purchase from Issuer, and immediately sell all of the following
shares:

     All of the then-vested shares subject to option no. B94896 covering 8,913
shares, issued on January 2, 2003.















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