Peter C. Richardson - 31 Jul 2025 Form 4 Insider Report for Mallinckrodt plc

Reporting relationship: EVP & Chief Scientific Officer
Issuer ticker: N/A
Reported as of: 31 Jul 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 04 Aug 2025, 20:48:30 UTC
Prior SEC filing: 02 Jan 2025
Source filing: View source filing
Reporting owner signature: /s/ Mark Tyndall, Attorney-in-Fact

Key filing fact

Peter C. Richardson filed Form 4 for Mallinckrodt plc on 04 Aug 2025.

Key facts

This page summarizes Peter C. Richardson's Form 4 filing for Mallinckrodt plc.
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 04 Aug 2025, 20:48.

Change

Previous filing in this sequence was filed on 02 Jan 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001343502 Primary reporting owner

Richardson Peter C

Relationship: EVP & Chief Scientific Officer
Address: 675 MCDONNELL BLVD., HAZELWOOD
Signature: /s/ Mark Tyndall, Attorney-in-Fact
Signature date: 04 Aug 2025

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

No ticker transaction Derivative

Restricted Stock Units

Award

Transaction value: $0
Shares: +20,518
Change %: +300%
Price: $0.000000
Shares after: 27,357
Date: 31 Jul 2025
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 20,518
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

On July 31, 2025, pursuant to the Transaction Agreement, dated as of March 13, 2025 (as amended, the "Transaction Agreement"), by and among Mallinckrodt plc (the "Issuer"), Endo, Inc. ("Endo") and Salvare Merger Sub LLC, the Issuer's wholly owned subsidiary ("Merger Sub"), the Merger Sub merged with and into Endo (the "Business Combination"), with Endo surviving the Business Combination as a wholly owned subsidiary of the Issuer.

Footnote F2

Upon consummation of the Business Combination, each performance unit ("PSU") held by the reporting person automatically converted into a restricted unit ("RSU"). Each RSU will fully vest on December 25, 2026.

SEC remarks

This Form 4 constitutes a notice to the Issuer for purposes of Part V of the Companies Act 2014.