CUSIP No. G5890A102 Page 12 of 12

Exhibit 99.1

Joint Filing Agreement

In accordance with Rule 13d-1(k) of 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 any and all amendments thereto) with respect to the shares of common stock, $0.01 par value (the “Shares”) of Mallinckrodt plc and further agree that this Joint Filing Agreement shall be included as an Exhibit to such joint filing. In evidence thereof, the undersigned, being duly authorized, hereby execute this Joint Filing Agreement as of June 16, 2023.

BRACEBRIDGE CAPITAL, LLC
By:	/s/ John N. Spinney, Jr.
Name:	John N. Spinney, Jr.
Title:	Authorized Signatory
FFI III S.A R.L.
By:	/s/ John N. Spinney, Jr.
Name:	John N. Spinney, Jr.
Title:	Authorized Signatory
FYI S.A R.L.
By:	/s/ John N. Spinney, Jr.
Name:	John N. Spinney, Jr.
Title:	Authorized Signatory
OLIFANT LUXCO S.A R.L.
By:	/s/ John N. Spinney, Jr.
Name:	John N. Spinney, Jr.
Title:	Authorized Signatory