SEC Filing | Mallinckrodt

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

SCHEDULE 13D/A

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

Under the Securities Exchange Act of 1934
(Amendment No. 1)*

Mallinckrodt plc

(Name of Issuer)

Ordinary shares, par value $0.20 per share

(Title of Class of Securities)

G5785G107

(CUSIP Number)

The Buxton Helmsley Group, Inc.

1185 Avenue of the Americas, Floor 3

New York, N.Y. 10036-2600

Tel.: +1 (212) 561-5540

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

March 10, 2021

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box [ ].

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See § 240.13d-7(b) for other parties to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. G5785G107

SCHEDULE 13D

Page 2 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Buxton Helmsley Holdings, Inc.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	WC
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Michigan
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0
		8	SHARED VOTING POWER
			1,225,535
		9	SOLE DISPOSITIVE POWER
			0
		10	SHARED DISPOSITIVE POWER
			1,225,535
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	1,225,535
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	1.4%¹
14	TYPE OF REPORTING PERSON (See Instructions)
	HC, CO

__________________

¹ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 3 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	The Buxton Helmsley Group, Inc.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	WC
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Michigan
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0
		8	SHARED VOTING POWER
			1,225,535
		9	SOLE DISPOSITIVE POWER
			0
		10	SHARED DISPOSITIVE POWER
			1,225,535
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	1,225,535
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	1.4%²
14	TYPE OF REPORTING PERSON (See Instructions)
	CO, IA

__________________

² Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 4 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Alexander Parker
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	AF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0
		8	SHARED VOTING POWER
			1,225,535
		9	SOLE DISPOSITIVE POWER
			0
		10	SHARED DISPOSITIVE POWER
			1,225,535
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	1,225,535
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	1.4%³
14	TYPE OF REPORTING PERSON (See Instructions)
	HC, IN

__________________

³ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 5 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Vladislav Dikii
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Russia
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			970,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			970,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	970,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	1.1%⁴
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

⁴ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 6 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Thomas Gitter
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	WC
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0
		8	SHARED VOTING POWER
			626,750
		9	SOLE DISPOSITIVE POWER
			0
		10	SHARED DISPOSITIVE POWER
			626,750
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	626,750
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.7%⁵
14	TYPE OF REPORTING PERSON (See Instructions)
	IA, IN

__________________

⁵ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 7 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Hank Beinstein
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			0
		8	SHARED VOTING POWER
			241,689
		9	SOLE DISPOSITIVE POWER
			0
		10	SHARED DISPOSITIVE POWER
			241,689
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	241,689
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.3%⁶
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

⁶ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 8 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Janice J. O’Connor
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			69,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			69,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	69,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%⁷
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

⁷ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 9 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Roman Dontsov Valentinovich
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Russia
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			135,212
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			135,212
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	135,212
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.2%⁸
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

⁸ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 10 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Alexander Koch
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Germany
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			120,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			120,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	120,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%⁹
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

⁹ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 11 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Alex Peter Wounlund
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Denmark
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			47,018
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			47,018
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	47,018
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%¹⁰
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

¹⁰ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 12 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	James Jonathan Josey
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			111,400
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			111,400
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	111,400
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%¹¹
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

¹¹ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 13 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Kimberly Tully
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			90,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			90,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	90,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%¹²
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

¹² Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 14 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Andrew Gruber
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			80,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			80,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	80,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%¹³
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

¹³ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 15 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Alexander Lugovoy
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Russia
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			79,090
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			79,090
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	79,090
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%¹⁴
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

_________________

¹⁴ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 16 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Richard Barry
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			72,285
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			72,285
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	72,285
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%¹⁵
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

¹⁵ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 17 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Zavolozhin Sergey Vladimirovich
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Russia
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			67,413
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			67,413
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	67,413
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%¹⁶
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

¹⁶ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 18 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Victor Pardo
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			52,080
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			52,080
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	52,080
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%¹⁷
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

¹⁷ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 19 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Mary Dunne
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			39,347
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			39,347
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	39,347
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%¹⁸
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

¹⁸ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 20 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Petr Hofrek
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			38,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			38,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	38,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%¹⁹
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

¹⁹ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 21 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Chris Tichenor
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			24,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			24,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	24,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%²⁰
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

²⁰ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 22 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Israel Larraondo
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Spain
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			20,139
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			20,139
		10	SHARED VOTING POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	20,139
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%²¹
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

²¹ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 23 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Robert Kramer
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			20,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			20,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	20,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%²²
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

²² Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 24 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	David Lamb
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			17,632
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			17,632
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	17,632
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.0%²³
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

²³ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 25 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Daniliuk Kirill Vladimirovich
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Russia
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			193,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			193,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	193,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.2%²⁴
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

²⁴ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 26 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Joan I. Barry Revocable Trust (Dtd. 12/13/13)
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	WC
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			93,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			93,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	93,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%²⁵
14	TYPE OF REPORTING PERSON (See Instructions)
	OO

__________________

²⁵ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 27 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Yushenkova Olga Petrovna
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Russia
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			77,699
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			77,699
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	77,699
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%²⁶
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

²⁶ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 28 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Vanik Petrosian
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Russia
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			74,300
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			74,300
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	74,300
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%²⁷
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

²⁷ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 29 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	John V. Barry Revocable Trust (Dtd. 12/13/13)
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	WC
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			44,000
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			44,000
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	44,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%²⁸
14	TYPE OF REPORTING PERSON (See Instructions)
	OO

__________________

²⁸ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

CUSIP No. G5785G107

SCHEDULE 13D

Page 30 of 46 Pages

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
	Pradeep Vasudeva Kadambi
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	(a) [X] (b) [ ]
3	SEC USE ONLY

4	SOURCE OF FUNDS (See Instructions)
	PF
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)
	[ ]
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			101,900
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER
			101,900
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	101,900
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions)
	[ ]
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	0.1%²⁹
14	TYPE OF REPORTING PERSON (See Instructions)
	IN

__________________

²⁹ Based upon 84,604,862 shares of Ordinary shares, par value $0.20 per share (“Shares”), of Mallinckrodt plc. (the “Issuer”) outstanding as of October 30, 2020, as reported in the Issuer’s quarterly report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2020.

This Amendment No. 1 to Schedule 13D (“Amendment No. 1”) amends and supplements the Schedule 13D originally filed with the Securities and Exchange Commission by the Reporting Persons on March 5, 2021 (the “Schedule 13D”) relating to the Ordinary shares, par value $0.20 per share (the “Shares”), of Mallinckrodt plc (the “Issuer”). Except as specifically provided herein, this Amendment No. 1 does not modify any of the information previously reported on the Schedule 13D. Capitalized terms used but not otherwise defined in this Amendment No. 1 shall have the meanings ascribed to them in the Schedule 13D.

Item 1.

Security and Issuer

Item 1 of Schedule 13D is hereby amended and restated in its entirety to read as follows:

This Schedule 13D is being filed with respect to common shares issued by Mallinckrodt plc, whose principal executive offices are at College Business & Technology Park, Cruiserath, Blanchardstown, Dublin 15, Ireland.

Item 2.

Identity and Background

Item 2 of Schedule 13D is hereby amended and restated in its entirety to read as follows:

(a)

This Schedule 13D is being filed jointly pursuant to that certain Joint Filing Agreement filed herewith as Exhibit 99.1 by:

· Buxton Helmsley Holdings, Inc. (“Holdings”)

· The Buxton Helmsley Group, Inc. (“Buxton”)

· Alexander Parker (“Parker”) and

· The individual persons and entities listed below (collectively, the “Individual Members”):

o Vladislav Dikii

o Thomas Gitter

o Hank Beinstein

o Janice J. O’Connor

o Roman Dontsov Valentinovich

o Alexander Koch

o Alex Peter Wounlund

o James Jonathan Josey

o Pradeep Vasudeva Kadambi

o Kimberly Tully

o Andrew Gruber

o Alexander Lugovoy

o Richard Barry

o Zavolozhin Sergey Vladimirovich

o Victor Pardo

o Mary Dunne

o Petr Hofrek

o Chris Tichenor

o Israel Larraondo

o Robert Kramer

o David Lamb

o Daniliuk Kirill Vladimirovich

o Joan I. Barry Revocable Trust (Dtd. 12/13/13)

Page 31 of 46 Pages

		o Yushenkova Olga Petrovna o Vanik Petrosian o John V. Barry Revocable Trust (Dtd. 12/13/13) Together with Holdings, Buxton, and Parker, the Individual Members comprise a group within the meaning of Section 13(d)(3) of the Act.

	(b)	The business address of Holdings, Buxton, and Parker is 1185 Avenue of the Americas, Floor 3, New York, N.Y. 10036-2600. Information regarding the Individual Members is set forth on Schedule A.

	(c)	Buxton is the wholly-owned subsidiary of Holdings, a parent holding company. Buxton is a private asset management and financial services firm and a registered investment advisor. Buxton holds the Shares reported in this Schedule 13D in the accounts of Buxton’s discretionary clients. Parker is the sole control person of both Buxton and Holdings. Parker holds the title of Director at Holdings and Senior Managing Director at Buxton. There are no other directors, officers, or control persons at Holdings or Buxton. Information regarding the Individual Members is set forth on Schedule A.


	(d)	During the last five years, neither Holdings, Buxton, Parker, nor any of the Individual Members have been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

	(e)	During the last five years, neither Holdings, Buxton, Parker, nor any of the Individual Members have been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and became subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

	(f)	Holdings and Buxton are Michigan corporations. Parker is a citizen of the United States of America. The citizenship of each Individual Member is set forth on Schedule A.

Item 3.

Source and Amount of Funds or Other Considerations

Item 3 of Schedule 13D is hereby amended and restated in its entirety to read as follows:

Funds for the purchase of the Shares reported herein were derived from available working capital of Buxton. Buxton purchased 510,936 Shares of the Issuer in open market purchases between January 12, 2021 and March 1, 2021 for a total of $162,503.38. Buxton made other purchases of the Shares previously, also via available working capital.

The Reporting Persons collectively may be deemed to be the beneficial owner of, in the aggregate, 4,730,489 Shares. For the Individual Members, other than Thomas Gitter, the Joan I. Barry Revocable Trust (Dtd. 12/13/13), and the John V. Barry Revocable Trust (Dtd. 12/13/13), whose funding for the Shares was derived from available working capital, the source of funding for the Shares was personal funds of the respective Individual Member.

Item 4.

Purpose of Transaction

Item 4 of Schedule 13D is hereby amended and restated in its entirety to read as follows:

Page 32 of 46 Pages

The Reporting Persons reserve the right, consistent with applicable law, to (i) acquire additional Shares and/or other equity, debt, notes, instruments or other securities (collectively, "Securities") of the Issuer (or its affiliates) in the open market or otherwise; (ii) dispose of any or all of their Securities in the open market or otherwise; and (iii) engage in any hedging or similar transactions with respect to the Securities. The Reporting Persons may engage in discussions with management or the Board of Directors of the Issuer concerning the business, operations, management, and future plans of the Issuer. Depending on various factors, including the Reporting Persons’ financial position and investment strategy, the price of the Shares, conditions in the securities markets, and general economic and industry conditions, the Reporting Persons may in the future take such actions they deem appropriate, including, without limitation, seeking Board representation, submitting shareholder proposals, calling for a special shareholder meeting, or calling for changes in the board of directors or management of the Issuer.

On March 10, 2021, the Reporting Persons sent a letter via email (the “Letter”) to the Issuer. The Letter is filed herewith as Exhibit 99.2 to the Amendment No. 1.

Item 5.

Interest in Securities of the Issuer

Item 5 of Schedule 13D is hereby amended and restated in its entirety to read as follows:

(a)	As of the time of this filing, Holdings, Buxton, and Parker own 1,225,535 Shares of the Issuer, or a 1.4% ownership interest of the Issuer’s Shares. Information regarding the Individual Members is set forth on Schedule B. Collectively, Holdings, Buxton, Parker, and the Individual Members own 4,730,489 Shares or a 5.6% ownership interest of the Issuer’s Shares.

(b)	Number of Shares as to which such person has: (i) Sole Voting Power: Each of Holdings, Buxton, and Parker has the sole power to vote or direct the vote over 0 Shares. (ii) Shared Voting Power: Holdings has the shared power to vote or direct the vote over 1,225,535 Shares. Buxton has the shared power to vote or direct the vote over 1,225,535 Shares. Parker has the shared power to vote or direct the vote over 1,225,535 Shares. (iii) Sole Dispositive Power: Each of Holdings, Buxton, and Parker has the sole power to dispose or direct the disposition of 0 Shares. (iv) Shared Dispositive Power: Holdings has the shared power to dispose or to direct the direct the disposition of 1,225,535 Shares. Buxton has the shared power to dispose or to direct the direct the disposition of 1,225,535 Shares. Parker has the shared power to dispose or to direct the direct the disposition of 1,225,535 Shares. Information regarding the voting and dispositive power of the Individual Members is set forth on Schedule B.

Page 33 of 46 Pages

(c)

The following table sets forth all transactions with respect to the Shares effected during the past sixty (60) days by any of the Reporting Persons, inclusive of any transactions effected through 5:00 p.m., New York City time, on March 5, 2021. Except as otherwise noted below, all such transactions were purchases of Shares effected in the open market, and the table includes commissions paid in per share prices.

Reporting Person	Date	Shares	Price of Security
Buxton	1/8/2021	2,500³⁰	0.233
Buxton	1/8/2021	2,746³¹	0.23
Buxton	1/12/2021	30,000	0.2212
Buxton	1/12/2021	4,600	0.25
Buxton	1/12/2021	200	0.25
Buxton	1/14/2021	73,547	0.249092567
Buxton	1/14/2021	3,530	0.249092567
Buxton	1/14/2021	72,923	0.249092567
Buxton	1/19/2021	85,000	0.24495935
Buxton	1/19/2021	941	0.24499575
Buxton	1/19/2021	19,446	0.24499575
Buxton	1/19/2021	19,613	0.24499575
Buxton	1/20/2021	4,150	0.2406
Buxton	2/18/2021	1,800	0.423
Buxton	2/22/2021	1,238	0.44
Buxton	2/22/2021	6,606	0.431
Buxton	2/22/2021	100	0.431
Buxton	2/22/2021	2,500	0.44
Buxton	2/22/2021	300	0.4402
Buxton	2/22/2021	17,640	0.45
Buxton	2/23/2021	2,383	0.415
Buxton	2/23/2021	29	0.42
Buxton	2/24/2021	1	0.445
Buxton	2/24/2021	12	0.445
Buxton	2/24/2021	6	0.445
Buxton	2/24/2021	28,790	0.445
Buxton	2/24/2021	14,949	0.445
Buxton	2/24/2021	12	0.445
Buxton	2/24/2021	6	0.449947714
Buxton	2/24/2021	7,996	0.449947714
Buxton	2/24/2021	15,398	0.449947714
Buxton	2/24/2021	500	0.425
Buxton	2/24/2021	1,200	0.427
Buxton	2/24/2021	2,853	0.4299
Buxton	2/24/2021	2,500	0.4348
Buxton	2/24/2021	5,975	0.435
Buxton	2/24/2021	3,500	0.4475
Buxton	2/24/2021	2,500	0.4475

__________________

³⁰ Sale of Shares.

³¹ Sale of Shares.

Page 34 of 46 Pages

Reporting Person	Date	Shares	Price of Security
Buxton	2/24/2021	2,500	0.4475
Buxton	2/24/2021	5,024	0.45
Buxton	2/25/2021	16,600	0.41
Buxton	2/25/2021	2,655	0.4111
Buxton	2/25/2021	1,069	0.4081
Buxton	2/25/2021	10,000	0.47
Buxton	2/25/2021	1,000	0.4106
Buxton	2/25/2021	1,000	0.413
Buxton	2/26/2021	2,500	0.41
Buxton	2/26/2021	2,500	0.41
Buxton	2/26/2021	2,500	0.41
Buxton	2/26/2021	164	0.41
Buxton	2/26/2021	4,233	0.4099
Buxton	2/26/2021	405	0.41
Buxton	2/26/2021	1,336	0.41
Buxton	2/26/2021	1,124	0.41
Buxton	3/1/2021	5,172	0.4065
Buxton	3/1/2021	4,804	0.41
Buxton	3/1/2021	156	0.4
Buxton	3/1/2021	900	0.405
Buxton	3/1/2021	2,500	0.41
Buxton	3/1/2021	2,500	0.41
Buxton	3/1/2021	2,500	0.41
Buxton	3/1/2021	2,500	0.4111
Buxton	3/1/2021	2,550	0.43
Thomas Gitter	1/12/2021	13,838	0.22
Thomas Gitter	1/12/2021	3,000	0.2175
Thomas Gitter	1/12/2021	3,162	0.2174
Thomas Gitter	1/14/2021	8,755	0.24
Thomas Gitter	1/14/2021	1,245	0.2399
Thomas Gitter	1/22/2021	24,720	0.239
Thomas Gitter	1/22/2021	13,280	0.238
Kimberly Tully	1/4/2021	3,000	0.26
Kimberly Tully	1/13/2021	2,000	0.26
Kimberly Tully	1/13/2021	3,000	0.23
Kimberly Tully	1/13/2021	1,625	0.23
Kimberly Tully	1/13/2021	1,175	0.22
Kimberly Tully	1/13/2021	3,000	0.22
Kimberly Tully	1/20/2021	1,200	0.24
Kimberly Tully	1/22/2021	1,600	0.24
Kimberly Tully	1/23/2021	4,999	0.24
Kimberly Tully	1/25/2021	4,999	0.24
Kimberly Tully	1/25/2021	4,999	0.24
Kimberly Tully	1/26/2021	4,000	0.23
Kimberly Tully	1/26/2021	1,101	0.24
Kimberly Tully	1/26/2021	3,856	0.23
Kimberly Tully	1/26/2021	4,999	0.23
Kimberly Tully	1/26/2021	4,999	0.23

Page 35 of 46 Pages

Reporting Person	Date	Shares	Price of Security
Kimberly Tully	1/26/2021	4,999	0.24
Kimberly Tully	1/26/2021	4,999	0.24
Kimberly Tully	1/27/2021	4,999	0.26
Kimberly Tully	1/27/2021	4,999	0.2399
Kimberly Tully	1/27/2021	4,999	0.239
Kimberly Tully	1/27/2021	4,999	0.238
Kimberly Tully	1/27/2021	2,000	0.34
Kimberly Tully	1/29/2021	650	0.61
Kimberly Tully	2/5/2021	100	0.42
Kimberly Tully	2/9/2021	500	0.44
Kimberly Tully	2/13/2021	1,000	0.43
Kimberly Tully	2/15/2021	1,000	0.47
Kimberly Tully	2/24/2021	1,000	0.45
Kimberly Tully	3/1/2021	3,000	0.42
Janice J. O’Connor	1/29/2021	10,400	0.43
Chris Tichenor	2/09/2021	4,000	0.48
Chris Tichenor	2/09/2021	1,000	0.47
Chris Tichenor	2/24/2021	5,000	0.45
Chris Tichenor	2/24/2021	3,452	0.45
Chris Tichenor	2/25/2021	5,000	0.43
Chris Tichenor	2/25/2021	1,548	0.39


(d)	N/A.

(e)	N/A.

Item 7.

Material to Be Filed as Exhibits

Item 7 of Schedule 13D is hereby amended and restated in its entirety to read as follows:

	1.	Joint Filing Agreement

	2.	Letter

Schedule A

Schedule A of Schedule 13D is hereby amended and restated in its entirety to read as follows:

Page 36 of 46 Pages

Name	Principal Business Address or Residence	Principal Occupation or Employment/ Principal Business	Citizenship
Vladislav Dikii	Moscow, p. Pervomayskoe, Block 328, Bld. 96, bldg. 9	Investor (Self-Employed)	Russia
Thomas Gitter	17 Parklawn Place, Madison, WI 53705	Retired	USA
Hank Beinstein	8 Dogwood Lane, Larchmont, NY, 10538	Partner and Portfolio Manager at Gagnon Securities, LLC Principal Business: Investment Management Address: 1370 6th Ave # 24, New York, NY 10019	USA
Janice J. O'Connor	12808 S. Outer Belt Road, Lone Jack, MO 64070	Retired	USA
Roman Dontsov Valentinovich	350005 Russia, Krasnodar, Alexandra Pokryshkina street 2 /2 apartment 416	Self-Employed	Russia
Alexander Koch	Jakob-Kaiser-Str. 14A, D-49088 Osnabrueck, Germany	Self-Employed	Germany
Alex Peter Wounlund	Bredholtvej 8, 2650 Hvidovre, Denmark	Key Account Manager at GlobalConnect Principal Business: Fiber Network Address: Havneholmen 6, 2450 Copenhagen, Denmark	Denmark
James Jonathan Josey	5319 Carolwood Drive, Jackson, MS 39211	Deputy CFO at The Molpus Woodlands Group, LLC Principal Business: Timber Investment Address: 858 North Street, Jackson, MS 39211	USA

Page 37 of 46 Pages

Pradeep Vasudeva Kadambi	2764 Tartus Dr., Jacksonville, FL 32246 USA	Physician at Self-Employed. Principal Business: Medicine Address: 655 W. 8th Street, Jacksonville, FL 32209	USA
Kimberly Tully	4 South Deer Place, Hainesport, NJ 08036	Self-Employed Consultant	USA
Andrew Gruber	215 Pleasant Street, Arlington MA 02476	Engineer at Qualcomm Principal Business: Wireless Technology Address: 5775 Morehouse Drive, San Diego CA 92121	USA
Alexander Lugovoy	Russia, Rostov of Don, Big Sadovaya Street 120 kv 35	Self-Employed	Russia
Richard Barry	4532 Saint James Drive, Plano TX 75024	IT Management at United Surgical Partners Incorporated Principal Business: Ambulatory Surgery Services Address: 5601 Warren Parkway Frisco Texas, 75034	USA
Zavolozhin Sergey Vladimirovich	Russia, Novosibirsk region, R, P Koltsovo 28	Doctor at Self-Employed Principal Business: Medicine Address: Russia, Novosibirsk, Pasechnaya street 1, k 2	Russia
Victor Pardo	11 Threepence Drive, Melville, NY 11747	Audio Engineer at Self-Employed Address: 1100 Haff Avenue, North Bellmore, NY 11710	USA
Mary Dunne	54 Hicks Street, Brooklyn, NY 11201	Retired	USA

Page 38 of 46 Pages

Petr Hofrek	9516 Park Drive, Unit 206, Omaha, NE 68127	Inventory Control at PAK Global LLC Principal Business: Industrial Fabrics and Hardware Address: 2528 South 156th Circle, Omaha, NE 68130	USA
Chris Tichenor	400 Redding Road, Lexington, KY 40517	Retired	USA
Israel Larraondo	Medinaceli, 6, 6. 28660. Boadilla del Monte. Madrid. Spain	Renewable Energy Technician at PEMOG Principal Business: Energy Address: Juan Carlos I. 31. 28660. Boadilla del Monte. Madrid. Spain.	Spain
Robert Kramer	136 Wesley Drive, Swedesboro, NJ 08085	Retired	USA
David Lamb	13560 NW Springville Road, Portland, OR 97229	Digital Design Engineer at Skyworks Solutions, Inc. Principal Business: Semiconductors Address: 1600 NW Compton Drive, Suite 300, Hillsboro, OR 97006	USA
Daniliuk Kirill Vladimirovich	125315, G MOSKVA, PR-KT LENINGRADSKII, DOM 74/6, KV 76	Retired	Russia
Joan I. Barry Revocable Trust (Dtd. 12/13/13)	3313 S. Victoria Drive, Blue Springs, MO 64015	Retired	USA
Yushenkova Olga Petrovna	Russia, Ryazan,Moscovskoe shosse d.33/4 kv.435	Investor (Self-Employed)	Russia
Vanik Petrosian	Ul Vodopoinaia, d 19, kv 178, 357748, g Kislovodsk, Stavropolskii krai	Retired	Russia

Page 39 of 46 Pages

John V. Barry Revocable Trust (Dtd. 12/13/13)

3313 S. Victoria Drive, Blue Springs, MO 64015

Retired

USA

Schedule B

Schedule B of Schedule 13D is hereby amended and restated in its entirety to read as follows:

Name	Aggregate Number of Shares Owned	Percentage of Class	Sole Voting Power	Shared Voting Power	Sole Dispositive Power	Shared Dispositive Power
Vladislav Dikii	970,000	1.1%	970,000	0	970,000	0
Thomas Gitter	626,750	0.7%	0	626,750	0	626,750
Hank Beinstein	241,689	0.3%	0	241,689	0	241,689
Janice J. O'Connor	69,000	0.1%	69,000	0	69,000	0
Roman Dontsov Valentinovich	135,212	0.2%	135,212	0	135,212	0
Alexander Koch	120,000	0.1%	120,000	0	120,000	0
Alex Peter Wounland	47,018	0.1%	47,018	0	47,018	0
James Jonathan Josey	111,400	0.1%	111,400	0	111,400	0
Pradeep Vasudeva Kadambi	101,900	0.1%	101,900	0	101,900	0
Kimberly Tully	90,000	0.1%	90,000	0	90,000	0
Andrew Gruber	80,000	0.1%	80,000	0	80,000	0

Page 40 of 46 Pages

Alexander Lugovoy	79,090	0.1%	79,090	79,090
Richard Barry	72,285	0.1%	72,285	72,285
Zavolozhin Sergey Vladimirovich	67,413	0.1%	67,413	67,413
Victor Pardo	52,080	0.1%	52,080	52,080
Mary Dunne	39,347	0.0%	39,347	39,347
Petr Hofrek	38,000	0.0%	38,000	38,000
Chris Tichenor	24,000	0.0%	24,000	24,000
Israel Larraondo	20,139	0.0%	20,139	20,139
Robert Kramer	20,000	0.0%	20,000	20,000
David Lamb	17,632	0.0%	17,632	17,632
Daniliuk Kirill Vladimirovich	193,000	0.2%	193,000	193,000
Joan I. Barry Revocable Trust (Dtd. 12/13/13)	93,000	0.1%	93,000	93,000
Yushenkova Olga Petrovna	77,699	0.1%	77,699	77,699
Vanik Petrosian	74,300	0.1%	74,300	74,300
John V. Barry Revocable Trust (Dtd. 12/13/13)	44,000	0.1%	44,000	44,000

Page 41 of 46 Pages

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BUXTON HELMSLEY HOLDINGS, INC.


By:	/s/ Alexander E. Parker	March 10, 2021
Name:	Alexander E. Parker
Title:	Director



THE BUXTON HELMSLEY GROUP, INC.


By:	/s/ Alexander E. Parker	March 10, 2021
Name:	Alexander E. Parker
Title:	Senior Managing Director



ALEXANDER E. PARKER


By:	/s/ Alexander E. Parker	March 10, 2021
Name:	Alexander E. Parker



VLADISLAV DIKII


By:	*/s/ Vladislav Dikii	March 10, 2021
Name:	Vladislav Dikii



THOMAS GITTER


By:	*/s/ Thomas Gitter	March 10, 2021
Name:	Thomas Gitter

Page 42 of 46 Pages

HANK BEINSTEIN


By:	*/s/ Hank Beinstein	March 10, 2021
Name:	Hank Beinstein



JANICE J. O’CONNOR


By:	*/s/ Janice J. O’Connor	March 10, 2021
Name:	Janice J. O’Connor



ROMAN DONSTOV VALENTINOVICH


By:	*/s/ Roman Donstov Valentinovich	March 10, 2021
Name:	Roman Donstov Valentinovich



ALEXANDER KOCH


By:	*/s/ Alexander Koch	March 10, 2021
Name:	Alexander Koch



ALEX PETER WOUNLUND


By:	*/s/ Alex Peter Wounlund	March 10, 2021
Name:	Alex Peter Wounlund



JAMES JONATHAN JOSEY


By:	*/s/ James Jonathan Josey	March 10, 2021
Name:	James Jonathan Josey




PRADEEP VASUDEVA KADAMBI


By:	*/s/ Pradeep Vasudeva Kadambi	March 10, 2021
Name:	Pradeep Vasudeva Kadambi

Page 43 of 46 Pages

KIMBERY TULLY


By:	*/s/ Kimberly Tully	March 10, 2021
Name:	Kimberly Tully




ANDREW GRUBER


By:	*/s/ Andrew Gruber	March 10, 2021
Name:	Andrew Gruber



ALEXANDER LUGOVOY


By:	*/s/ Alexander Lugovoy	March 10, 2021
Name:	Alexander Lugovoy



RICHARD BARRY


By:	*/s/ Richard Barry	March 10, 2021
Name:	Richard Barry



ZAVOLOZHIN SERGEY VLADIMIROVICH


By:	*/s/ Zavolozhin Sergey Vladimirovich	March 10, 2021
Name:	Zavolozhin Sergey Vladimirovich



VICTOR PARDO


By:	*/s/ Victor Pardo	March 10, 2021
Name:	Victor Pardo



MARY DUNNE


By:	*/s/ Mary Dunne	March 10, 2021
Name:	Mary Dunne

Page 44 of 46 Pages

PETR HOFREK


By:	*/s/ Petr Hofrek	March 10, 2021
Name:	Petr Hofrek




CHRIS TICHENOR


By:	*/s/ Chris Tichenor	March 10, 2021
Name:	Chris Tichenor



ISRAEL LARRAONDO


By:	*/s/ Israel Larraondo	March 10, 2021
Name:	Israel Larraondo



ROBERT KRAMER


By:	*/s/ Robert Kramer	March 10, 2021
Name:	Robert Kramer



DAVID LAMB


By:	*/s/ David Lamb	March 10, 2021
Name:	David Lamb



DANILIUK KIRILL VLADIMIROVICH


By:	*/s/ Daniliuk Kirill Vladimirovich	March 10, 2021
Name:	Daniliuk Kirill Vladimirovich



JOAN I. BARRY REVOCABLE TRUST (DTD. 12/13/13)


By:	*/s/ Janice J. O’Connor	March 10, 2021
Name:	Janice J. O’Connor
Title:	Co-Trustee

Page 45 of 46 Pages

YUSHENKOVA OLGA PETROVNA


By:	*/s/ Yushenkova Olga Petrovna	March 10, 2021
Name:	Yushenkova Olga Petrovna




VANIK PETROSIAN


By:	*/s/ Vanik Petrosian	March 10, 2021
Name:	Vanik Petrosian



JOHN V. BARRY REVOCABLE TRUST (DTD. 12/13/13)


By:	*/s/ Janice J. O’Connor	March 10, 2021
Name:	Janice J. O’Connor
Title:	Co-Trustee



*By:	/s/ Alexander E. Parker	March 10, 2021
Name:	Alexander E. Parker
Title:	Attorney-in-Fact

Page 46 of 46 Pages

EXHIBIT 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a statement on Schedule 13D, including all amendments thereto, with respect to the ordinary shares, par value $0.20 per share, of Mallinckrodt plc, and further agree that this Joint Filing Agreement shall be included as an exhibit to the first such joint filing and may, as required, be included as an exhibit to subsequent amendments thereto.

Each of the undersigned agrees and acknowledges that each party hereto is (i) individually eligible to use such Schedule 13D and (ii) responsible for the timely filing of such Schedule 13D and any and all amendments thereto, and for the completeness and accuracy of the information concerning such party contained therein; provided that no party is responsible for the completeness and accuracy of the information concerning any other party unless such party knows or has reason to believe that such information is inaccurate.

Each of the undersigned hereby constitutes and appoints Alexander E. Parker as their true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any and all amendments to the statement on Schedule 13D, and to file the same, with exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing necessary or desirable to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

This Joint Filing Agreement may be executed in any number of counterparts, all of which together shall constitute one and the same instrument. A facsimile or other reproduction of this Joint Filing Agreement may be executed by one or more parties hereto, and an executed copy of this Joint Filing Agreement may be delivered by one or more parties hereto by facsimile or similar instantaneous electronic transmission device pursuant to which the signature of or on behalf of such party can be seen, and such execution and delivery shall be considered valid, binding and effective for all purposes as of the date hereof.

Dated: March 10, 2021

[SIGNATURE PAGES FOLLOW]

IN WITNESS WHEREOF, the undersigned hereby execute this Joint Filing Agreement as of the date first written above.

BUXTON HELMSLEY HOLDINGS, INC.


By:	/s/ Alexander E. Parker	March 5, 2021
Name:	Alexander E. Parker
Title:	Director



THE BUXTON HELMSLEY GROUP, INC.


By:	/s/ Alexander E. Parker	March 5, 2021
Name:	Alexander E. Parker
Title:	Senior Managing Director



ALEXANDER E. PARKER


By:	/s/ Alexander E. Parker	March 5, 2021
Name:	Alexander E. Parker



VLADISLAV DIKII


By:	/s/ Vladislav Dikii	March 5, 2021
Name:	Vladislav Dikii



THOMAS GITTER


By:	/s/ Thomas Gitter	March 5, 2021
Name:	Thomas Gitter



HANK BEINSTEIN


By:	/s/ Hank Beinstein	March 5, 2021
Name:	Hank Beinstein

JANICE J. O’CONNOR


By:	/s/ Janice J. O’Connor	March 5, 2021
Name:	Janice J. O’Connor



ROMAN DONSTOV VALENTINOVICH


By:	/s/ Roman Donstov Valentinovich	March 5, 2021
Name:	Roman Donstov Valentinovich



ALEXANDER KOCH


By:	/s/ Alexander Koch	March 5, 2021
Name:	Alexander Koch



ALEX PETER WOUNLUND


By:	/s/ Alex Peter Wounlund	March 5, 2021
Name:	Alex Peter Wounlund



JAMES JONATHAN JOSEY


By:	/s/ James Jonathan Josey	March 5, 2021
Name:	James Jonathan Josey



KIMBERY TULLY


By:	/s/ Kimberly Tully	March 5, 2021
Name:	Kimberly Tully

ANDREW GRUBER


By:	/s/ Andrew Gruber	March 5, 2021
Name:	Andrew Gruber

ALEXANDER LUGOVOY


By:	/s/ Alexander Lugovoy	March 5, 2021
Name:	Alexander Lugovoy



RICHARD BARRY


By:	/s/ Richard Barry	March 5, 2021
Name:	Richard Barry



ZAVOLOZHIN SERGEY VLADIMIROVICH


By:	/s/ Zavolozhin Sergey Vladimirovich	March 5, 2021
Name:	Zavolozhin Sergey Vladimirovich



VICTOR PARDO


By:	/s/ Victor Pardo	March 5, 2021
Name:	Victor Pardo



MARY DUNNE


By:	/s/ Mary Dunne	March 5, 2021
Name:	Mary Dunne



PETR HOFREK


By:	/s/ Petr Hofrek	March 5, 2021
Name:	Petr Hofrek

CHRIS TICHENOR


By:	/s/ Chris Tichenor	March 5, 2021
Name:	Chris Tichenor

ISRAEL LARRAONDO


By:	/s/ Israel Larraondo	March 5, 2021
Name:	Israel Larraondo



ROBERT KRAMER


By:	/s/ Robert Kramer	March 5, 2021
Name:	Robert Kramer



DAVID LAMB


By:	/s/ David Lamb	March 5, 2021
Name:	David Lamb



DANILIUK KIRILL VLADIMIROVICH


By:	/s/ Daniliuk Kirill Vladimirovich	March 5, 2021
Name:	Daniliuk Kirill Vladimirovich



JOAN I. BARRY REVOCABLE TRUST (DTD. 12/13/13)


By:	/s/ Janice J. O’Connor	March 5, 2021
Name:	Janice J. O’Connor
Title:	Co-Trustee



YUSHENKOVA OLGA PETROVNA


By:	/s/ Yushenkova Olga Petrovna	March 5, 2021
Name:	Yushenkova Olga Petrovna

VANIK PETROSIAN


By:	/s/ Vanik Petrosian	March 5, 2021
Name:	Vanik Petrosian

JOHN V. BARRY REVOCABLE TRUST (DTD. 12/13/13)


By:	/s/ Janice J. O’Connor	March 5, 2021
Name:	Janice J. O’Connor
Title:	Co-Trustee



PRADEEP VASUDEVA KADAMBI


By:	/s/ Pradeep Vasudeva Kadambi	March 10, 2021
Name:	Pradeep Vasudeva Kadambi

EXHIBIT 99.2

VIA REGISTERED U.S. POSTAL MAIL AND ELECTRONIC MAIL
board.directors@mnk.com; investor.relations@mnk.com;

March 10, 2021

Board of Directors – All Members
Mallinckrodt Plc.
675 McDonnell Blvd.
St. Louis, MO 63042
United States of America

Re: Mallinckrodt Plc. Shareholder Action – Immediate Response Demanded and Required

Ladies and Gentlemen:

The Buxton Helmsley Group, Inc. (“Buxton”) is a registered investment adviser. As you are now aware, Buxton and a group of like-minded investors have acquired a 5.6% interest in Mallinckrodt plc (the “Company”).

The Board of Directors have thus far ignored the Company's shareholders and acted in complete disregard of the owners of the Company and the duties it owes to them. We can no longer sit idle while this Board recklessly pursues the complete destruction of shareholder value. The Board's failures are almost too numerous to mention, but to name a few:

Pursuing reorganization plans that ignore the intrinsic value of the Company and rob the shareholders at any chance of realizing value;

Failing to explore a meaningful bidding process or strategic alternatives that would have preserved the value of the Company and its products;

Undervaluing drugs in the pipeline;

Self-dealing;

Failure to comply with ownership requirements for the Board and management;

Capriciously settling litigation for the convenience of the Board and its management without regard to the impact on the owners of the Company.

Despite the Company's present condition, we firmly believe that there is much to be gained from a successful and rapid transition in strategy and leadership.

We demand that the Board of Directors contact me at once to discuss our proposals for righting these wrongs. We expect the Board to be mindful of its duties and to take our proposals seriously.

Ultimately, shareholders like us have means to effect changes necessary to protect our investment. We are prepared to take any legally permissible action to hold this Board and management accountable for their many failures and betrayals.

I look forward to hearing from you as soon as possible, holding a telephonic conference (with all directors present) no later than 4:00 pm Eastern Standard Time on Friday, March 12, 2021.

Most Sincerely,

/s/ Alexander Parker

Alexander Parker

Senior Managing Director

The Buxton Helmsley Group, Inc.