Ownership Submission
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 OF SECURITIES

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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(Print or Type Responses)
1. Name and Address of Reporting Person *
Russell Angus C.
  2. Issuer Name and Ticker or Trading Symbol
Mallinckrodt plc [MNK]
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 MALLINCKRODT PLC, 675 JAMES S. MCDONNELL BLVD.
3. Date of Earliest Transaction (Month/Day/Year)
08/14/2014
(Street)

HAZELWOOD, MO 63042
4. If Amendment, Date 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
(City)
(State)
(Zip)
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
Ordinary shares, $0.20 par value 08/14/2014 08/14/2014 A   21,530 (1) (2) A (1) (2) 21,530 D  

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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 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
Restricted Stock Units $ 0 08/14/2014   A   1,893     (3)   (3) Ordinary shares 1,893 (3) 1,893 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Russell Angus C.
C/O MALLINCKRODT PLC
675 JAMES S. MCDONNELL BLVD.
HAZELWOOD, MO 63042
  X      

Signatures

 /s/ Miriam R. Singer (By Power of Attorney)   08/18/2014
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) On August 14, 2014, Mallinckrodt plc ("Mallinckrodt") acquired Questcor Pharmaceuticals, Inc. ("Questcor") pursuant to the Agreement and Plan of Merger, dated as of April 5, 2014, by and among Mallinckrodt, Questcor and Quincy Merger Sub, Inc. (the "Merger"). In connection with the Merger, immediately prior to the effective time of the Merger (the "Effective Time"): (i) each share of Questcor common stock (except for certain shares defined in the Merger Agreement) converted into the right to receive, without interest, (a) $30.00 in cash and (b) 0.897 of an ordinary share of Mallinckrodt, in exchange for such share of Questcor common stock ("Merger Consideration"); (Continued on 2.)
(2) (ii) each outstanding option to purchase Questcor common stock granted to a non-employee director (whether vested or unvested) converted into the right to receive the Merger Consideration with respect to each share of Questcor common stock subject to such option immediately prior to the Effective Time, net of the applicable exercise price; and (iii) each outstanding share of restricted Questcor common stock granted to a non-employee director was converted into the right to receive the Merger Consideration.
(3) These restricted stock units ("RSUs") were granted to the reporting person in connection with his appointment to the Mallinckrodt board of directors on August 14, 2014. These RSUs vest in their entirety as of the date of Mallinckrodt's 2015 annual general meeting of shareholders and settle in Mallinckrodt ordinary shares upon vesting.

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