ATN International holder sells 10,000 shares at $31

ATN International, Inc. (ATNI) reported that ten percent owner Cornelius B. Prior Jr., through entity VI E-Cell Tropical Telecom Ltd, sold 10,000 shares of Common Stock on 2026-08-24 at $31.3389 per share.

Rhea-AI Filing Summary

ATN International, Inc. (ATNI) reported that ten percent owner Cornelius B. Prior Jr., through entity VI E-Cell Tropical Telecom Ltd, sold 10,000 shares of Common Stock on 2026-08-24 at $31.3389 per share. After this sale, reported holdings include 3,982,303 shares held directly and additional indirect holdings through affiliated entities and a spouse.

Insider Trade Summary

Net Seller: 10,000 shares

Net Sell 4 txns

Insider PRIOR CORNELIUS B JR

Role 10% Owner

Sold 10,000 shs ($313K)

Type	Security	Shares	Price	Value
Sale	Common Stock	10,000	$31.3389	$313K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 37,165 shares (Indirect, By VI E-Cell Tropical Telecom Ltd); Common Stock — 3,982,303 shares (Direct); Common Stock — 500 shares (Indirect, By: Wife); Common Stock — 8,227 shares (Indirect, By Tropical Aircraft Co.)

Key Figures

Shares sold: 10,000 shares of Common Stock Sale price per share: $31.3389 per share Indirect holdings via VI E-Cell Tropical Telecom Ltd: 37,165 shares of Common Stock +3 more

6 metrics

Shares sold 10,000 shares of Common Stock Sale by VI E-Cell Tropical Telecom Ltd on 2026-08-24

Sale price per share $31.3389 per share 10,000-share sale of ATNI Common Stock on 2026-08-24

Indirect holdings via VI E-Cell Tropical Telecom Ltd 37,165 shares of Common Stock Total shares indirectly held through VI E-Cell after the sale

Directly held shares 3,982,303 shares of Common Stock Direct ownership position reported as of 2026-08-24

Indirect holdings via Tropical Aircraft Co. 8,227 shares of Common Stock Indirect ownership through Tropical Aircraft Co. as of 2026-08-24

Indirect holdings via spouse 500 shares of Common Stock Indirect ownership held by wife as of 2026-08-24

Key Terms

ten percent owner, indirect ownership, Common Stock, open market or private transaction

4 terms

ten percent owner regulatory

"The reporting person is marked as a ten percent owner of ATN International, Inc."

indirect ownership financial

"Shares are reported as held indirectly by VI E-Cell Tropical Telecom Ltd and others."

Common Stock financial

"All reported transactions and holdings relate to Common Stock."

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

open market or private transaction financial

"The transaction code description is Sale in open market or private transaction."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did ATNI disclose for Cornelius B. Prior Jr.?

ATN International, Inc. (ATNI) reported that Cornelius B. Prior Jr., through VI E-Cell Tropical Telecom Ltd, sold 10,000 shares of Common Stock on 2026-08-24 at $31.3389 per share in an open market or private transaction.

How many ATNI shares did Cornelius B. Prior Jr. sell and at what price?

Cornelius B. Prior Jr. sold 10,000 ATNI Common Stock shares on 2026-08-24 at a reported price of $31.3389 per share, through an entity listed as VI E-Cell Tropical Telecom Ltd.

What are Cornelius B. Prior Jr.’s direct ATNI holdings after the reported transaction?

After the reported activity on 2026-08-24, Cornelius B. Prior Jr. is shown as holding 3,982,303 ATNI Common Stock shares directly, separate from any shares held indirectly through entities or his spouse.

What indirect ATNI holdings are reported for Cornelius B. Prior Jr.?

Reported indirect holdings include 37,165 shares held by VI E-Cell Tropical Telecom Ltd, 8,227 shares held by Tropical Aircraft Co., and 500 shares held by his wife, all in ATNI Common Stock as of 2026-08-24.

Was the ATNI insider sale made under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not marked as affirming a plan (aff_10b5_one is false). No accompanying note in the provided data states that the 10,000-share sale was made pursuant to a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/26/2026 - 05:37 PM EDT Accepted by SEC EDGAR 08/26/2026 - 05:35 PM EDT 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^*

PRIOR CORNELIUS B JR

(Last) (First) (Middle)

C/O ATN INTERNATIONAL, INC.

500 CUMMINGS CENTER

(Street)

BEVERLY MASSACHUSETTS 01915

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/24/2026

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	08/24/2026		S		10,000	D	$31.3389	37,165	I	By VI E-Cell Tropical Telecom Ltd
Common Stock								3,982,303	D
Common Stock								500	I	By: Wife
Common Stock								8,227	I	By Tropical Aircraft Co.

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:

	/s/ Andy Fienberg , Attorney-in-Fact	08/26/2026
	** 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)