AptarGroup (NYSE: ATR) CEO reports 1,772-share tax withholding transaction

Rhea-AI Filing Summary

APTARGROUP, INC. President and CEO Stephan B. Tanda reported a routine tax-related share disposition. On 2026-03-17, 1,772 shares of Common Stock were withheld at $129.50 per share to satisfy tax obligations, rather than sold on the open market.

After this transaction, Tanda directly holds 200,986 shares of Common Stock. He also has an additional 3,138 shares held indirectly through a 401(k) trust, showing that his overall equity stake in the company remains substantial following the tax-withholding event.

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

OMB APPROVAL

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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^*

Tanda Stephan B.

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

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								3,138	I	By 401(k) trust
Common Stock	03/17/2026		F		1,772	D	$129.5	200,986	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:

	Stephan Tanda 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 insider transaction did ATR President and CEO Stephan B. Tanda report?

Stephan B. Tanda reported a tax-related share disposition. On 17 March 2026, 1,772 shares of AptarGroup Common Stock were withheld at $129.50 per share to cover tax liabilities, rather than being sold on the open market.

How many ATR shares were involved in Stephan B. Tanda’s tax-withholding transaction?

The transaction involved 1,772 shares of AptarGroup Common Stock. These shares were withheld by the issuer at $129.50 per share to satisfy tax obligations associated with equity compensation, and do not represent a discretionary open-market sale.

How many AptarGroup (ATR) shares does Stephan B. Tanda hold after the reported transaction?

After the transaction, Stephan B. Tanda directly holds 200,986 AptarGroup Common Stock shares. He also has 3,138 additional shares held indirectly through a 401(k) trust, indicating a continued large ownership position in the company.

Was Stephan B. Tanda’s ATR Form 4 transaction an open-market sale?

No, the Form 4 shows a tax-withholding disposition coded as “F.” The 1,772 shares were delivered to cover tax liabilities at $129.50 per share, meaning they were not sold in a discretionary open-market trade by Tanda.

What does the “F” code mean in Stephan B. Tanda’s ATR Form 4 filing?

The “F” code indicates payment of exercise price or tax liability by delivering securities. In this case, 1,772 AptarGroup shares were withheld at $129.50 each to satisfy tax obligations, a routine administrative step tied to equity compensation.