EX-32.1 10 atr-20241231x10kexx321.htm EX-32.1
Exhibit 32.1
CERTIFICATE PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
I, Stephan B. Tanda, the president and chief executive officer of AptarGroup, Inc., certify that (i) the Annual Report on Form 10-K of AptarGroup, Inc. for the year ended December 31, 2024 (the “Form 10-K”) fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and (ii) the information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of AptarGroup, Inc.

| /s/ Stephan B. Tanda
| Stephan B. Tanda
| President and Chief Executive Officer
| February 7, 2025