JOINT FILING AGREEMENT
Published on November 20, 2025
Exhibit 99.1
Joint Filing Agreement
The undersigned acknowledge and agree that the Schedule 13G with respect to beneficial ownership by the undersigned of ordinary shares, with a nominal value of €0.01 per share, of Ardagh Metal Packaging S.A. filed on or about the date hereof is being filed on behalf of each of the undersigned in accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, and that all subsequent amendments to such Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. This agreement may be executed in any number of counterparts, each of which shall be deemed an original, but all of which counterparts taken together shall constitute one and the same instrument.
Date: November 19, 2025
| ARDAGH GROUP S.A. | |||
| By: | /s/ Mark Porto | ||
| Name: | Mark Porto | ||
| Title: | Director | ||
| By: | /s/ Herman Troskie | ||
| Name: | Herman Troskie | ||
| Title: | Director | ||
| ARD HOLDINGS S.A. | |||
| By: | /s/ Paul Coulson | ||
| Name: | Paul Coulson | ||
| Title: | Director | ||
| By: | /s/ Gerald Moloney | ||
| Name: | Gerald Moloney | ||
| Title: | Director | ||
| By: | /s/ Paul Coulson | ||
| Name: | Paul Coulson | ||