ATN International (NASDAQ: ATNI) CEO reports tax-share withholding on RSU vesting

Rhea-AI Filing Summary

ATN International, Inc. director and Chief Executive Officer Brad W. Martin reported routine tax-related share dispositions tied to restricted stock unit vesting. On March 12 and March 13, shares of Common Stock were withheld by the company at prices of $24.65 and $24.49 per share to cover his tax obligations. These Form 4 transactions are coded "F," indicating payment of tax liability by delivering securities rather than open-market sales. Following the most recent transaction, he directly holds 100,318 shares of Common Stock.

Insights

Equity compensation analyst

Routine tax withholding on vested equity; no open-market trading signal.

Brad W. Martin, CEO of ATN International, reported two code F transactions where 6,795 Common Stock shares in total were withheld to satisfy tax obligations from vested restricted stock units. The filing specifies these as payments of tax liability, not discretionary sales.

Because the company withholds shares instead of the executive selling them in the market, these events generally carry little information about his view of the stock. After the withholding, he still directly holds 100,318 shares, indicating a substantial remaining equity position aligned with shareholder interests.

Insider Trade Summary

Net Seller: 6,795 shares

Net Sell 2 txns

Insider Martin Brad W

Role CHIEF EXECUTIVE OFFICER

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	4,496	$24.49	$110K
Exercise Price or Tax Liability	Common Stock	2,299	$24.65	$57K

Holdings After Transaction: Common Stock — 100,318 shares (Direct)

Footnotes (2)

1. F1. Represents shares withheld by the Company for payment of Mr. Martin's tax obligations arising from the vesting of previously granted Restricted Stock Units.
2. F2. Refer to existing footnote (1).

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 03/16/2026 - 05:25 PM Learn about SEC filing dates

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Martin Brad W

(Last) (First) (Middle)

C/O ATN INTERNATIONAL, INC.

500 CUMMINGS CENTER

(Street)

BEVERLY MA 01915

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ATN International, Inc. [ ATNI ]

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

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CHIEF EXECUTIVE OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
03/12/2026

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

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

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

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	03/12/2026		F(1)		2,299	D	$24.65	104,814	D
Common Stock	03/13/2026		F(2)		4,496	D	$24.49	100,318	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:

1. Represents shares withheld by the Company for payment of Mr. Martin's tax obligations arising from the vesting of previously granted Restricted Stock Units.

2. Refer to existing footnote (1).

	/s/ Brad W. Martin	03/16/2026
	** 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.