ATN International insider sells 5,000 shares

ATN International, Inc. ten percent owner Prior Cornelius B Jr reported indirect open-market sales of 5,000 shares of common stock on June 29.

Rhea-AI Filing Summary

ATN International, Inc. ten percent owner Prior Cornelius B Jr reported indirect open-market sales of 5,000 shares of common stock on June 29. The trades, executed through VI E-Cell Tropical Telecom Ltd, were priced between $27.52 and $27.86 per share. He continues to report substantial holdings, including 3,994,303 shares held directly and 363,424 shares held as trustee of a revocable trust, plus additional smaller indirect positions.

Insights

Equity ownership analyst

Insider makes modest open-market sales while retaining large stake.

Ten percent owner Prior Cornelius B Jr reported selling 5,000 ATN International common shares in open-market transactions via VI E-Cell Tropical Telecom Ltd at prices around $27.52–$27.86. These are discretionary sales, not option exercises or tax-related events.

After these trades, he still reports a large position with 3,994,303 shares held directly and significant indirect holdings through a revocable trust and related entities. The sales are small relative to the disclosed overall ownership in this filing, suggesting a routine portfolio adjustment rather than a major change in commitment.

Insider Trade Summary

Net Seller: 5,000 shares

Net Sell 9 txns

Insider PRIOR CORNELIUS B JR

Role 10% Owner

Sold 5,000 shs ($138K)

Type	Security	Shares	Price	Value
Sale	Common Stock	500	$27.7501	$14K
Sale	Common Stock	1,000	$27.86	$28K
Sale	Common Stock	1,000	$27.60	$28K
Sale	Common Stock	2,000	$27.57	$55K
Sale	Common Stock	500	$27.52	$14K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 81,436 shares (Indirect, By VI E-Cell Tropical Telecom Ltd); Common Stock — 3,994,303 shares (Direct); Common Stock — 500 shares (Indirect, By: Wife); Common Stock — 8,227 shares (Indirect, By Tropical Aircraft Co.); Common Stock — 363,424 shares (Indirect, Trustee of Revocable Trust)

Key Figures

Shares sold: 5,000 shares Sale prices: $27.52–$27.86 per share Direct holdings: 3,994,303 shares +3 more

6 metrics

Shares sold 5,000 shares Open-market sales on June 29, 2026

Sale prices $27.52–$27.86 per share Prices for 5,000 shares sold on June 29, 2026

Direct holdings 3,994,303 shares Common stock held directly after reported transactions

Revocable trust holdings 363,424 shares Indirect ownership as trustee of revocable trust

Tropical Aircraft Co. holdings 8,227 shares Indirect ownership through Tropical Aircraft Co.

Spouse holdings 500 shares Indirect ownership held by wife

Key Terms

open-market sale, ten percent owner, indirect ownership, Common Stock, +1 more

5 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

ten percent owner regulatory

""is_ten_percent_owner": 1"

indirect ownership financial

""ownership_type": "indirect""

Common Stock financial

""security_title": "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.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did ATN International (ATNI) report for Prior Cornelius B Jr?

ATN International reported that ten percent owner Prior Cornelius B Jr sold 5,000 shares of common stock in open-market transactions through VI E-Cell Tropical Telecom Ltd on June 29, at prices between $27.52 and $27.86 per share.

At what prices were the ATNI shares sold in the latest Form 4 filing?

The reported open-market sales of ATN International common stock were executed at prices ranging from $27.52 to $27.86 per share. These trades together covered 5,000 shares and were all dated June 29, according to the Form 4 data.

How many ATN International shares does Prior Cornelius B Jr still hold directly?

Following the reported transactions, Prior Cornelius B Jr reports direct ownership of 3,994,303 ATN International common shares. This direct position is in addition to several indirect holdings through a revocable trust, Tropical Aircraft Co., his spouse, and VI E-Cell Tropical Telecom Ltd.

What indirect ATNI holdings are reported for Prior Cornelius B Jr in the Form 4?

The Form 4 shows indirect ATN International holdings including 363,424 shares as trustee of a revocable trust, 8,227 shares through Tropical Aircraft Co., and 500 shares held by his wife, along with an additional indirect position via VI E-Cell Tropical Telecom Ltd.

How significant are the 5,000 ATNI shares sold compared to the insider’s overall holdings?

The 5,000 shares sold represent a small portion of Prior Cornelius B Jr’s disclosed ownership. He continues to report 3,994,303 shares held directly plus sizeable indirect holdings through a revocable trust and other related entities, indicating a large remaining stake in ATN International.

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

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Accepted by SEC EDGAR 07/01/2026 - 05:30 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^*

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)
06/29/2026

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	06/29/2026		S		500	D	$27.7501	85,936	I	By VI E-Cell Tropical Telecom Ltd
Common Stock	06/29/2026		S		1,000	D	$27.86	84,936	I	By VI E-Cell Tropical Telecom Ltd
Common Stock	06/29/2026		S		1,000	D	$27.6	83,936	I	By VI E-Cell Tropical Telecom Ltd
Common Stock	06/29/2026		S		2,000	D	$27.57	81,936	I	By VI E-Cell Tropical Telecom Ltd
Common Stock	06/29/2026		S		500	D	$27.52	81,436	I	By VI E-Cell Tropical Telecom Ltd
Common Stock								3,994,303	D
Common Stock								500	I	By: Wife
Common Stock								8,227	I	By Tropical Aircraft Co.
Common Stock								363,424	I	Trustee of Revocable Trust

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	07/01/2026
	** 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)