☒QUARTERLY REPORT PURSUANT TO SECTION13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934FOR THE QUARTERLY PERIOD ENDEDJUNE 30, 2026OR☐TRANSITION REPORT PURSUANT TO SECTION13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934FOR THE TRANSITION PERIOD FROMTO AptarGroup,Inc. 265 EXCHANGE DRIVE,SUITE 301,CRYSTAL LAKE,IL 60014815-477-0424 Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading symbol(s)Name of each exchange on which registeredCommon Stock, $.01 par valueATRNew York Stock Exchange Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d)of the SecuritiesExchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports),and (2)has been subject to such filing requirements for the past 90 days. YesNo◻Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrantwas required to submit such files). YesNo◻Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reportingcompany” and “emerging growth company” in Rule12b-2 of the Exchange Act. Large accelerated filer If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period forcomplying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.◻Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Exchange Act). Yes☐NoThe number of shares outstanding of common stock, as of July27, 2026, was 63,581,129 shares. AptarGroup,Inc.Form10-QQuarter Ended June30, 2026INDEXPartI.FINANCIAL INFORMATIONItem 1.Financial Statements (Unaudited)Condensed Consolidated Statements of Income – Three and Six Months Ended June 30, 2026 and 20251Condensed Consolidated Statements of Comprehensive Income – Three and Six Months Ended June 30, 2026and 20252Condensed Consolidated Balance Sheets – June 30, 2026 and December31, 20253Condensed Consolidated Statements of Changes in Equity – Three and Six Months Ended June 30, 2026 and20255Condensed Consolidated Statements of Cash Flows - Six Months Ended June 30, 2026 and 20257Notes to Condensed Consolidated Financial Statements9Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations32Item 3.Quantitative and Qualitative Disclosures about Market Risk50Item 4.Controls and Procedures51PartII.OTHER INFORMATIONItem 1.Legal Proceedings52Item 2.Unregistered Sales of Equity Securities and Use of Proceeds52Item 5.Other Information52Item 6.Exhibits53Signature54 PARTI – FINANCIAL INFORMATIONITEM 1. FINANCIAL STATEMENTS (UNAUDITED)AptarGroup,Inc.CONDENSED CONSOLIDATED STATEMENTS OF INCOME(Unaudited) AptarGroup,Inc.CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME(Unaudited) AptarGroup,Inc.CONDENSED CONSOLIDATED BALANCE SHEETS(Unaudited) AptarGroup,Inc.CONDENSED CONSOLIDATED BALANCE SHEETS(Unaudited) AptarGroup,Inc.CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY(Unaudited) AptarGroup,Inc.CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(Unaudited) Table of Contents Restricted cash included in the line item prepaid and other on the Condensed Consolidated Balance Sheets as shown below representsamounts held in escrow related to the Sommaplast acquisition. Six Months Ended June 30, AptarGroup,Inc.Notes to Condensed Consolidated Financial Statements(Dollars in Thousands, Except per Share Amounts, or as Otherwise Indicated)(Unaudited) NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES BASIS OF PRESENTATION The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of AptarGroup,Inc. and oursubsidiaries. The terms “AptarGroup,” “Aptar,” “Company,” “we,” “us” or “our” as used herein refer to AptarGroup,Inc. and oursubsidiaries. All significant intercompany accounts and transactions have been eliminated. In the opinion of management, the unaudited Condensed Consolidated Financial Statements (the “Condensed Consolidated FinancialStatements”) include all normal recurring adjustments necessary for a fair statement of consolidated financial position, results ofoperations, comprehensive income, changes in equity and cash flows for the interim periods presented. The accompanying CondensedConsolidated Financial Statements have been prepared by the Company, pursuant to the rulesand regulations of the Securities andExchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared inaccor