Sec Form 4 Filing - Hatten Sandra L @ AVADEL PHARMACEUTICALS PLC - 2016-12-31

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 Hatten Sandra L 2. Issuer Name and Ticker or Trading Symbol AVADEL PHARMACEUTICALS PLC [ AVDL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) See Remarks (Last) (First) (Middle) C/O FLAMEL TECHNOLOGIES S.A., 33, AVENUE DU DOCTEUR GEORGES LEVY 3. Date of Earliest Transaction (MM/DD/YY) 12/31/2016 (Street) VENISSIEUX, I069200 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 ADSs ( 1 ) 12/31/2016 D( 2 ) 33,000 ( 3 ) D $ 0 ( 4 ) 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 (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 Option (right to buy) $ 21.67 12/31/2016 D( 2 ) 100,000 ( 5 ) 06/26/2025 ADSs 100,000 $ 0 ( 4 ) 0 D Stock Option (right to buy) $ 14.35 12/31/2016 D( 2 ) 50,000 ( 6 ) 12/10/2025 ADSs 50,000 $ 0 ( 4 ) 0 D Stock Option (right to buy) $ 10.4 12/31/2016 D( 2 ) 80,000 ( 7 ) 12/14/2026 ADSs 80,000 $ 0 ( 4 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Hatten Sandra L C/O FLAMEL TECHNOLOGIES S.A. 33, AVENUE DU DOCTEUR GEORGES LEVY VENISSIEUX, I069200 See Remarks Signatures /s/ Phillandas T. Thompson, as attorney-in-fact for Sandra L. Hatten 12/31/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The issuer's "ADSs" are American Depositary Shares, with each ADS representing one ordinary share, nominal value 0.122 Euros per share, of the issuer; ADSs are represented by American Depositary Receipts. ( 2 )On 12/31/16, Flamel Technologies S.A. ("Flamel") merged with and into Avadel Pharmaceuticals plc ("Avadel"). As a result of the Merger, Flamel's outstanding ordinary shares were cancelled and exchanged on a 1-for-1 basis for newly issued ordinary shares of Avadel, and all outstanding American Depositary Shares (ADSs) representing Flamel ordinary shares were cancelled and exchanged on a 1-for-1 basis for ADSs representing Avadel ordinary shares. The reporting person is filing this Form 4 solely to report dispositions of Flamel securities as a result of the Merger. The reporting person will also file a Form 3 to reflect his or her new status as a director and/or executive officer of Avadel, and a new Form 4 evidencing his or her acquisition of the same number and type of securities of Avadel in the Merger. The reporting person made no market sales or purchases in connection with the dispositions reported in this Form 4 or the acquisitions to be reported in the new Form 4. ( 3 )Includes (a) 20,000 restricted ADSs granted under the issuer's "Free Share" award program on 8/10/2016, all of which will be issued to the reporting person on the second anniversary of the grant date; and (b) 10,000 restricted ADSs granted under the issuer's "Free Share" award program on 12/14/2016, all of which will be issued to the reporting person on the second anniversary of the grant date. ( 4 )Flamel Ordinary Shares and Flamel ADSs were exchanged in the Merger for an equal number of Avadel Ordinary Shares and Avadel ADSs (as applicable), respectively. ( 5 )Options become exercisable as to 25,000 ADSs on each of the first four anniversaries after the 06/26/2015 grant date. ( 6 )Options become exercisable as to 12,500 ADSs on each of the first four anniversaries after the 12/10/2015 grant date. Options become exercisable as to 12,500 ADSs on each of the first four anniversaries after the 12/10/2015 grant date. ( 7 )Options become exercisable as to 20,000 ADSs on each of the first four anniversaries after the 12/14/2016 grant date.

Remarks: Sr. VP, Quality and Reg. Affairs. The reporting person is submitting this Form 4 with respect to the disposition of securities in Flamel Technologies S.A. As described in Footnote 2 above, on December 31, 2016 Avadel Pharmaceuticals plc became the successor by merger to Flamel. In connection with such merger, the company information on the SEC's EDGAR system for CIK # 0001012477 (which number was formerly associated with Flamel) has been changed to reflect Avadel as the SEC filing company. Therefore, all Form 4s submitted via EDGAR after December 31, 2016 with respect to Flamel or Avadel will reflect Avadel's name, address, and ticker symbol.

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