13D Filing: Tang Capital Partners LP and La Jolla Pharmaceutical Co (LJPC)

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On February 26, 2018, Tang Capital Partners, LP purchased 1,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $32.502 per share.
On February 27, 2018, Tang Capital Partners, LP purchased 9,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $32.6982 per share.
On February 27, 2018, Tang Capital Partners, LP purchased 10,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $32.1728 per share.
On February 27, 2018, Tang Capital Partners, LP purchased 10,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $30.5714 per share.
On February 27, 2018, Tang Capital Partners, LP purchased 10,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $30.8796 per share.
On February 27, 2018, Tang Capital Partners, LP purchased 10,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $30.8725 per share.
On February 27, 2018, Tang Capital Partners, LP purchased 10,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $30.688 per share.
On February 27, 2018, Tang Capital Partners, LP purchased 10,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $30.6037 per share.
On February 28, 2018, Tang Capital Partners, LP purchased 10,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $29.5381 per share.
On February 28, 2018, Tang Capital Partners, LP purchased 10,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $30.1171 per share.
On February 28, 2018, Tang Capital Partners, LP purchased 10,000 shares of the Issuer’s Common Stock through the open market at a weighted-average price of $30.154 per share.
Tang Capital Partners, LP holds some of its shares in commingled margin accounts with various financial institutions, which may extend margin credit to Tang Capital Partners, LP as and when required, to open or carry positions in the margin accounts, subject to applicable federal margin regulations, stock exchange rules and credit policies. In such instances, the positions held in the margin accounts are pledged as collateral security for the repayment of debit balances in the accounts. The margin accounts may from time to time have debit balances. Since other securities are held in the margin accounts, it is not possible to determine the amounts, if any, of margin used to purchase the shares of Common Stock reported herein.
Item 5.   Interest in Securities of the Issuer.
Item 5 of the Statement is hereby amended and restated in its entirety as follows:
(a)       Amount beneficially owned and percentage of class:
Tang Capital Partners, LP
3,620,419 shares, representing 16.3% of the class
Tang Capital Management, LLC
3,620,419 shares, representing 16.3% of the class
Kevin C. Tang
3,668,419 shares, representing 16.5% of the class

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