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CIK 0001567892

MNKTQ Mallinckrodt plc

Insider trading from SEC Form 4. Last filing 8 d ago.

In brief

Mallinckrodt plc (MNKTQ) has 134 SEC Form 4 filings on file from 13 insiders, the latest filed on Oct 6, 2026. In the last 90 days insiders made 1 open-market buy worth $42M and 0 open-market sells worth $0, net +$42M.

13 open-market trades have been scored at MNKTQ. The newest: Goldentree Asset Management LP (10% owner) bought $42M of stock on Sep 24, 2026, filed Oct 6, 2026, scored 35 (weak). The largest of the 13 shown: Silver Point Capital L.P. (10% owner) bought $61M on Apr 15, 2026, scored 35 (weak).

1 Form 144 notice of planned sales is on file, the latest filed Nov 28, 2023.

Last 90 days

Net insider value
+$42M
more bought than sold
Buys
1
$42M by 1 insider
Sells
0
$0 by 0 insiders
Insiders on file
13
with a Form 4 at this company

Signals

Open-market buys and sells at Mallinckrodt plc, scored.

ScoreInsiderValueHoldingsPrice contextFiled
35WeakGoldentree Asset Management LP
owner
buy
$42M
463,000 shares
+6%-
35WeakSilver Point Capital L.P.
owner
buy
$36M
397,500 shares
+7%-
35WeakSilver Point Capital L.P.
owner
buy
$61M
685,000 shares
+14%-
40ModerateSilver Point Capital L.P.
owner
buy
$23M
250,000 shares
+5%-
37WeakSilver Point Capital L.P.
owner
buy
$12M
130,974 shares
+3%-
37WeakSilver Point Capital L.P.
owner
buy
$6.0M
68,000 shares
+2%-
35WeakSilver Point Capital L.P.
owner
buy
$27M
290,000 shares
+7%-
32WeakGoldentree Asset Management LP
owner
buy
$3.2M
36,700 shares
+0%-
27WeakGoldentree Asset Management LP
owner
buy
$4.3M
50,000 shares
+1%-
37WeakGoldentree Asset Management LP
owner
buy
$3.6M
83,000 shares
+4%-
40ModerateGoldentree Asset Management LP
owner
buy
$8.6M
225,000 shares
+11%-
29WeakGoldentree Asset Management LP
owner
buy
$751k
20,000 shares
+1%-
32WeakGoldentree Asset Management LP
owner
buy
$2.8M
75,000 shares
+4%-

Planned sales

Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales

FiledSellerSharesValueSale datePast 3 months
Nov 28, 2023 Silver Point Capital L.P.
Director
130,000
0.66% of outstanding
$5.0MNov 15, 2023none

Transactions

The newest 50 of 215 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Sep 24, 2026Goldentree Asset Management LP
owner
POpen-market purchase
Ordinary Sharesindirect: See footnotes
+463,000$91.00$42M8,442,8278 d ago
Jul 21, 2026Cheryl Ann Stouch
EVP & Chief Info Officer
FTax withholding
Ordinary Shares
-328--1,440Jul 23, 2026
Jul 21, 2026Susan Ann Williamson
EVP & Chief Compliance Officer
FTax withholding
Ordinary Shares
-571--1,460Jul 23, 2026
Jul 21, 2026Tracy Basso
EVP & CHRO
FTax withholding
Ordinary Shares
-763--1,542Jul 23, 2026
Jul 15, 2026Katina Dorton
director
AGrant or award
Restricted Stock Unitsderivative
+4,406$0.00$031,406Jul 17, 2026
Jul 15, 2026Marc J Yoskowitz
director
AGrant or award
Restricted Stock Unitsderivative
+4,406$0.00$09,718Jul 17, 2026
Jul 15, 2026Paul Efron
director
AGrant or award
Restricted Stock Unitsderivative
+4,406$0.00$08,390Jul 17, 2026
Jul 15, 2026Paul Bisaro
director
AGrant or award
Restricted Stock Unitsderivative
+4,406$0.00$046,749Jul 17, 2026
Jul 15, 2026Sophia J. Langlois
director
AGrant or award
Restricted Stock Unitsderivative
+4,406$0.00$08,390Jul 17, 2026
Jul 15, 2026Leslie E Donato
director
AGrant or award
Restricted Stock Unitsderivative
+4,406$0.00$08,390Jul 17, 2026
Jul 15, 2026Jon Zinman
director
AGrant or award
Restricted Stock Unitsderivative
+4,406$0.00$039,078Jul 17, 2026
Jun 2, 2026Leslie E Donato
director
MOption exercise
Ordinary Shares
+2,685--2,685Jul 17, 2026
Jul 15, 2026Scott Hirsch
director
AGrant or award
Restricted Stock Unitsderivative
+4,406$0.00$08,390Jul 17, 2026
Jun 2, 2026Leslie E Donato
director
FTax withholding
Ordinary Shares
-619--2,066Jul 17, 2026
Jun 2, 2026Leslie E Donato
director
DDisposition to issuer
Restricted Stock Unitsderivative
-2,197--6,669Jul 17, 2026
Jun 2, 2026Leslie E Donato
director
MOption exercise
Restricted Stock Unitsderivative
-2,685$0.00$03,984Jul 17, 2026
Jun 2, 2026Jon Zinman
director
MOption exercise
Ordinary Sharesindirect: By JZ Advisors LLC
+4,882--12,913Jun 4, 2026
Jun 2, 2026Sophia J. Langlois
director
MOption exercise
Ordinary Shares
+2,685--3,480Jun 4, 2026
Jun 2, 2026Katina Dorton
director
MOption exercise
Ordinary Shares
+4,882--7,387Jun 4, 2026
Jun 2, 2026Leslie E Donato
director
MOption exercise
Ordinary Shares
+4,882--4,882Jun 4, 2026
Jun 2, 2026Paul Efron
director
MOption exercise
Ordinary Shares
+3,580--12,045Jun 4, 2026
Jun 2, 2026Scott Hirsch
director
MOption exercise
Ordinary Shares
+2,685--3,140Jun 4, 2026
Jun 2, 2026Paul Bisaro
director
MOption exercise
Ordinary Shares
+2,685--6,863Jun 4, 2026
Jun 2, 2026Marc J Yoskowitz
director
MOption exercise
Ordinary Shares
+3,579--4,366Jun 4, 2026
Jun 2, 2026Jon Zinman
director
MOption exercise
Restricted Stock Unitsderivative
-4,882$0.00$034,672Jun 4, 2026
Jun 2, 2026Sophia J. Langlois
director
FTax withholding
Ordinary Shares
-1,289--2,191Jun 4, 2026
Jun 2, 2026Leslie E Donato
director
MOption exercise
Restricted Stock Unitsderivative
-4,882$0.00$03,984Jun 4, 2026
Jun 2, 2026Katina Dorton
director
MOption exercise
Restricted Stock Unitsderivative
-4,882$0.00$027,000Jun 4, 2026
Jun 2, 2026Paul Efron
director
FTax withholding
Ordinary Shares
-825--11,220Jun 4, 2026
Jun 2, 2026Scott Hirsch
director
FTax withholding
Ordinary Shares
-619--2,521Jun 4, 2026
Jun 2, 2026Paul Bisaro
director
FTax withholding
Ordinary Shares
-619--6,244Jun 4, 2026
Jun 2, 2026Marc J Yoskowitz
director
FTax withholding
Ordinary Shares
-825--3,541Jun 4, 2026
Jun 2, 2026Sophia J. Langlois
director
DDisposition to issuer
Restricted Stock Unitsderivative
-2,197--6,669Jun 4, 2026
Jun 2, 2026Paul Efron
director
DDisposition to issuer
Restricted Stock Unitsderivative
-2,930--7,564Jun 4, 2026
Jun 2, 2026Scott Hirsch
director
DDisposition to issuer
Restricted Stock Unitsderivative
-2,197--6,669Jun 4, 2026
Jun 2, 2026Paul Bisaro
director
DDisposition to issuer
Restricted Stock Unitsderivative
-2,197--45,028Jun 4, 2026
Jun 2, 2026Marc J Yoskowitz
director
DDisposition to issuer
Restricted Stock Unitsderivative
-2,930--8,891Jun 4, 2026
Jun 2, 2026Paul Bisaro
director
MOption exercise
Restricted Stock Unitsderivative
-2,685$0.00$042,343Jun 4, 2026
Jun 2, 2026Marc J Yoskowitz
director
MOption exercise
Restricted Stock Unitsderivative
-3,579$0.00$05,312Jun 4, 2026
Jun 2, 2026Sophia J. Langlois
director
MOption exercise
Restricted Stock Unitsderivative
-2,685$0.00$03,984Jun 4, 2026
Jun 2, 2026Paul Efron
director
MOption exercise
Restricted Stock Unitsderivative
-3,580$0.00$03,984Jun 4, 2026
Jun 2, 2026Scott Hirsch
director
MOption exercise
Restricted Stock Unitsderivative
-2,685$0.00$03,984Jun 4, 2026
May 19, 2026Silver Point Capital L.P.
owner
POpen-market purchase
Common Stock
+187,500$90.50$17M5,825,214May 21, 2026
May 20, 2026Silver Point Capital L.P.
owner
POpen-market purchase
Common Stock
+210,000$90.50$19M6,035,214May 21, 2026
Apr 23, 2026Tracy Basso
EVP & CHRO
MOption exercise
Ordinary Shares
+1,523--2,305Apr 24, 2026
Apr 23, 2026Susan Ann Williamson
EVP & Chief Compliance Officer
MOption exercise
Ordinary Shares
+1,305--2,031Apr 24, 2026
Apr 23, 2026Cheryl Ann Stouch
EVP & Chief Info Officer
MOption exercise
Ordinary Shares
+1,137--1,768Apr 24, 2026
Apr 23, 2026Tracy Basso
EVP & CHRO
MOption exercise
Restricted Stock Unitsderivative
-1,523$0.00$046,717Apr 24, 2026
Apr 23, 2026Susan Ann Williamson
EVP & Chief Compliance Officer
MOption exercise
Restricted Stock Unitsderivative
-1,305$0.00$026,378Apr 24, 2026
Apr 23, 2026Cheryl Ann Stouch
EVP & Chief Info Officer
MOption exercise
Restricted Stock Unitsderivative
-1,137$0.00$025,032Apr 24, 2026
50 of 215 rows shown.

Insiders

Everyone who has filed a Form 4 here.

Questions about MNKTQ

Answered from the filings on this page, as of the latest one.

Are insiders buying MNKTQ?

As of Oct 6, 2026, SEC Form 4 filings show 1 open-market buy worth $42M by 1 insider and 0 open-market sells worth $0 by 0 insiders at Mallinckrodt plc in the last 90 days, net +$42M. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.

Who was the last insider to trade MNKTQ on the open market?

Goldentree Asset Management LP (10% owner) bought $42M of MNKTQ on Sep 24, 2026 and filed the Form 4 on Oct 6, 2026. InsiderTell scored 35 (weak).

How many insiders file Form 4 at Mallinckrodt plc?

13 people have filed a Form 4 at Mallinckrodt plc, among them Paul Bisaro (director), Tracy Basso (EVP & CHRO), Leslie E Donato (director and officer). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

MNKTQ insider trading: Mallinckrodt plc | InsiderTell