ATNI shareholder files notice to sell shares

A shareholder of ATNI plans to sell 5,000 shares of common stock on or after August 14, 2026 on NASDAQ, with an aggregate market value of $158,900.

Rhea-AI Filing Summary

A shareholder of ATNI plans to sell 5,000 shares of common stock on or after August 14, 2026 on NASDAQ, with an aggregate market value of $158,900. The notice also lists multiple earlier sales over the prior three months executed through VI E-Cell Tropical Telecom Ltd.

Key Figures

Shares to be sold: 5,000 shares Aggregate market value of planned sale: $158,900 Shares outstanding: 15,380,000 shares +3 more

6 metrics

Shares to be sold 5,000 shares Planned sale of common stock on or after August 14, 2026

Aggregate market value of planned sale $158,900 Estimated value of 5,000 shares of common stock to be sold

Shares outstanding 15,380,000 shares Common stock outstanding as referenced in the notice

Recent sale 1 2,000 shares for $54,500 Common share sale on 05/14/2026 via VI E-Cell Tropical Telecom Ltd

Recent sale 2 17,500 shares for $492,975 Common share sale on 05/27/2026 via VI E-Cell Tropical Telecom Ltd

Recent sale 3 19,100 shares for $534,036 Common share sale on 06/12/2026 via VI E-Cell Tropical Telecom Ltd

Key Terms

Securities To Be Sold, Securities Sold During The Past 3 Months, Gift of initial equity investment

3 terms

Securities To Be Sold regulatory

"144: Securities To Be Sold Common stock | 11/30/1986 | Gift"

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months VI E-Cell Tropical"

Gift of initial equity investment financial

"11/30/1986 | Gift of initial equity investment | CORNELIUS"

FAQ

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

What does ATNI's Form 144-style notice disclose about planned stock sales?

The notice states that an ATNI shareholder plans to sell 5,000 shares of common stock on or after August 14, 2026 on NASDAQ, with an aggregate market value of $158,900, subject to applicable resale rules and limits.

How many ATNI shares are outstanding according to this filing?

The filing shows that 15,380,000 shares of ATNI common stock are outstanding. This figure provides context for the planned sale of 5,000 shares, indicating the proposed sale represents a very small portion of total shares.

What prior ATNI stock transactions are listed for the last three months?

The filing lists several prior ATNI common share sales from May to August 2026, including 17,500 shares sold for $492,975 on May 27, 2026, all executed through VI E-Cell Tropical Telecom Ltd as broker.

Who originally acquired the ATNI shares referenced and how?

The shares are linked to Cornelius B Prior Jr, who is shown as having received them as a "Gift of initial equity investment"

Which brokerages are involved in the planned and recent ATNI share sales?

The planned sale of 5,000 ATNI shares is associated with UBS Financial Services Inc. Recent sales over the past three months were executed through VI E-Cell Tropical Telecom Ltd, which handled multiple common share transactions and related proceeds.

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

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Available on EDGAR 08/14/2026 - 02:26 PM Accepted by SEC EDGAR 08/14/2026 - 02:25 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001366518
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ATN International Inc
SEC File Number	001-12593
Address of Issuer	500 Cummings Center, Suite 2450 Beverly MASSACHUSETTS 01915
Phone	9786191300
Name of Person for Whose Account the Securities are To Be Sold	Prior Family Foundation DTD 6/9/06
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Stakeholder

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common stock	UBS Financial Services Inc 1000 Harbor Blvd 3rd Floor Weehawken NJ 07086	5000	158900	15380000	08/14/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common stock	11/30/1986	Gift of initial equity investment	CORNELIUS B PRIOR JR			363424	11/30/1986	Gift of initial equity investment

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	05/14/2026	2000	54500
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	05/20/2026	3500	94570
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	05/21/2026	2000	54500
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	05/26/2026	2854	79798
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	05/27/2026	17500	492975
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	05/28/2026	2500	70625
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	06/01/2026	12610	356737
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	06/02/2026	6000	169800
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	06/11/2026	2000	54600
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	06/12/2026	19100	534036
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	06/25/2026	1500	40626
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	06/29/2026	5000	138235
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	08/06/2026	7000	208159
VI E-Cell Tropical Telecom Ltd PO Box 12030 St Thomas VI 00801-5030	common shares	08/07/2026	500	15585

144: Remarks and Signature

Remarks	Cornelius B Prior Jr is an over 10% stakeholder and control person of ATN International Inc. Cornelius B Prior Jr is also a member of the Prior Family Foundation, who is selling the shares.
Date of Notice	08/14/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/Mijo Suric, for UBS Financial Services Inc, as attorney-in-fact for Prior Family Foundation DTD 6/9/06
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)