Mallinckrodt (MNKTQ) Form 3 Mallinckrodt / Hugh Paul ONeill ownership change

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person^*

ONeill Hugh Paul

(Last) (First) (Middle)

675 MCDONNELL BLVD.

(Street)

HAZELWOOD MO 63042

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
02/28/2024

3. Issuer Name and Ticker or Trading Symbol
Mallinckrodt plc [ NONE ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
EVP, Qual & Ops, Spec Brands

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	(1)	Ordinary Shares	5,129	(2)	D

Explanation of Responses:

1. The restricted stock units (the "RSUs") will vest ratably on each of the first three anniversaries of January 1, 2024.

2. Upon vesting, each RSU will be settled in ordinary shares of the Issuer at one share per RSU.

Remarks:

Exhibit 24 - Power of Attorney. This Form 3 constitutes a notice to the Issuer for purposes of Part V of the Companies Act 2014.

	/s/ Mark Tyndall, Attorney-in-Fact	03/11/2024
	** 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 5 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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