Sec Form 4 Filing - KISHBAUCH MICHAEL D @ ACHILLION PHARMACEUTICALS INC - 2020-01-28

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person KISHBAUCH MICHAEL D 2. Issuer Name and Ticker or Trading Symbol ACHILLION PHARMACEUTICALS INC [ ACHN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O ACHILLION PHARMACEUTICALS, INC., 1777 SENTRY PARKWAY W, BLDG 14, STE 200 3. Date of Earliest Transaction (MM/DD/YY) 01/28/2020 (Street) BLUE BELL, PA19422 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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 Options (Right to buy) $ 7.54 01/28/2020 D 30,000 ( 2 ) 01/25/2026 Common Stock 30,000 ( 1 ) 0 D Stock Options (Right to buy) $ 4.09 01/28/2020 D 30,000 ( 2 ) 01/19/2027 Common Stock 30,000 ( 1 ) 0 D Stock Options (Right to buy) $ 3.02 01/28/2020 D 25,000 ( 2 ) 12/17/2023 Common Stock 25,000 ( 1 ) 0 D Stock Options (Right to buy) $ 2.9 01/28/2020 D 30,000 ( 2 ) 02/09/2028 Common Stock 30,000 ( 1 ) 0 D Stock Options (Right to buy) $ 2.74 01/28/2020 D 6,250 ( 2 ) 10/08/2023 Common Stock 6,250 ( 1 ) 0 D Stock Options (Right to buy) $ 2.18 01/28/2020 D 42,000 ( 2 ) 01/23/2029 Common Stock 42,000 ( 1 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other KISHBAUCH MICHAEL D C/O ACHILLION PHARMACEUTICALS, INC. 1777 SENTRY PARKWAY W, BLDG 14, STE 200 BLUE BELL, PA19422 X Signatures /s/ Keri Lantz, attorney-in-fact 01/29/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Subject to certain conditions, at the effective time, all unexercised options with an exercise price below $6.30 were cancelled and converted into the right to receive (i) a cash payment of (A) $6.30 less the exercise price, multiplied by (B) the number of shares subject thereto and (ii) one CVR per share subject thereto. Options with an exercise price of $6.30 or greater were cancelled and converted into the right to receive a cash payment with respect to each share subject thereto upon each milestone payment date equal to (i) the amount by which, as of the payment date, the sum of (x) $6.30, (y) the amount per share previously paid in respect of any earlier payment date and (z) the amount in cash to be paid at such payment date exceeds the exercise price payable under such option, less (ii) the amount of all payments previously received with respect to such option. Options with an exercise price of $8.30 or greater were cancelled without any consideration payable therefor. ( 2 )On January 28, 2020, Achillion Pharmaceuticals, Inc. ("Achillion") consummated a merger pursuant to the merger agreement among Achillion, Alexion Pharmaceuticals, Inc. ("Alexion") and Beagle Merger Sub, Inc. Shareholders received (i) cash consideration of $6.30 per share and (ii) one contingent value right ("CVR") per share. Each CVR represents the right to receive contingent cash payments of $1.00 upon the achievement of a certain clinical trial milestone with respect to ACH-5228 and $1.00 upon the achievement of a certain regulatory approval milestone with respect to ACH-4471.

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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