[Form 4] APTARGROUP, INC. Insider Trading Activity

Rhea-AI Filing Summary

APTARGROUP, INC. Chief Human Resources Officer Shiela Vinczeller reported a routine share disposition related to taxes. On March 17, 2026, 139 shares of common stock were withheld at $129.50 per share to cover tax liabilities tied to equity compensation. After this tax-withholding transaction, she directly owned 25,057 shares of AptarGroup common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Vinczeller Shiela

(Last) (First) (Middle)

265 EXCHANGE DRIVE

SUITE 301

(Street)

CRYSTAL LAKE ILLINOIS 60014

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
APTARGROUP, INC. [ ATR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Human Resources Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/17/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/17/2026		F		139	D	$129.5	25,057	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	Shiela Vinczeller by Irene Hudson as attorney-in-fact	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did AptarGroup (ATR) executive Shiela Vinczeller report in this Form 4?

Shiela Vinczeller reported a small, routine tax-related share disposition. On March 17, 2026, 139 AptarGroup common shares were withheld at $129.50 per share to satisfy tax obligations from equity compensation, leaving her with 25,057 directly owned shares.

How many AptarGroup (ATR) shares were involved in Shiela Vinczeller’s latest transaction?

The transaction involved 139 AptarGroup common shares. These shares were not sold on the market but withheld by the company to cover tax liabilities associated with equity compensation, a standard mechanism reflected in the Form 4 filing.

At what price were the AptarGroup (ATR) shares valued in Shiela Vinczeller’s Form 4 transaction?

The 139 AptarGroup common shares in the transaction were valued at $129.50 per share. This value is used to calculate the tax-withholding amount for equity compensation rather than representing an open-market sale price.

How many AptarGroup (ATR) shares does Shiela Vinczeller own after this Form 4 event?

Following the tax-withholding disposition, Shiela Vinczeller directly owns 25,057 AptarGroup common shares. This figure, disclosed in the Form 4, reflects her remaining direct equity position after 139 shares were withheld for tax obligations.

Is Shiela Vinczeller’s AptarGroup (ATR) Form 4 transaction an open-market sale?

No, the Form 4 describes a tax-withholding disposition, not an open-market sale. AptarGroup withheld 139 shares at $129.50 per share to satisfy tax liabilities tied to equity compensation, a common non-market transaction type coded as “F.”

What role does Shiela Vinczeller hold at AptarGroup (ATR) in this Form 4 filing?

Shiela Vinczeller is identified as AptarGroup’s Chief Human Resources Officer. The Form 4 records her equity-related activity, specifically 139 shares withheld for tax obligations, and confirms she holds 25,057 AptarGroup common shares directly after the transaction.