SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
ALTIG ANTHONY E

(Last) (First) (Middle)
C/O OPTIMER PHARMACEUTICALS, INC
101 HUDSON STREET

(Street)
JERSEY CITY NJ 07302

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
OPTIMER PHARMACEUTICALS INC [ OPTR ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
10/24/2013
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common stock 10/24/2013 D 5,000 D $10.75(1) 15,000 D
Common stock 10/24/2013 D 7,500 D $10.75(2) 7,500 D
Common stock 10/24/2013 D 7,500 D $10.75(3) 0 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock option (right to buy) $7.1 10/24/2013 D 5,000 (4) 12/04/2017 Common stock 5,000 $5.68 0 D
Stock option (right to buy) $7.1 10/24/2013 D 10,000 (4) 12/04/2017 Common stock 10,000 $5.68 0 D
Stock option (right to buy) $10.75 10/24/2013 D 5,000 (4) 01/08/2019 Common stock 5,000 $2.03 0 D
Stock option (right to buy) $11.85 10/24/2013 D 10,000 (4) 01/08/2020 Common stock 10,000 $0.93 0 D
Stock option (right to buy) $9.56 10/24/2013 D 10,000 (4) 12/01/2020 Common stock 10,000 $3.22 0 D
Explanation of Responses:
1. Pursuant to the Agreement and Plan of Merger, dated as of July 30, 2013 (the "Merger Agreement"), among Optimer Pharmaceuticals, Inc. ("Optimer"), Cubist Pharmaceuticals, Inc. ("Cubist"), and PDRS Corporation, shares were converted into the right to receive per share consideration of: (i) $10.75 cash and (ii) one contingent value right issued by Cubist in accordance with the Contingent Value Rights Agreement, dated as of October 24, 2013, between Cubist and American Stock Transfer & Trust Company, LLC (together, the "Per Share Merger Consideration").
2. Pursuant to the terms of the Merger Agreement, each award was converted into the right to receive the Per Share Merger Consideration with respect to each share of Optimer common stock subject to the award.
3. Pursuant to the terms of the Merger Agreement, each award was fully vested and converted into the right to receive the Per Share Merger Consideration with respect to each share of Optimer common stock subject to the award.
4. Pursuant to the terms of the Merger Agreement, each option was converted into the right to receive a cash payment equal to the excess, if any, of $12.78 (the last reported sale price of a share of Optimer common stock on The NASDAQ Global Select Market on October 23, 2013, over such option's per share exercise price).
Anthony E. Altig 10/25/2013
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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