As of November 10, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of ATN International, Inc. The largest reported stake is Cornelius B. Prior, Jr.'s, at 28.19%. 4 filings are on record since April 9, 2026 (Schedule 13D/A, September 18, 2026).
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Key facts
- · Reporting person: Global Alpha Capital Management Ltd. · Sole voting: 972,165 · Shared voting: 0 · Sole dispositive: 1,305,494 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-11-09
- · Reporting person: Cornelius B. Prior, Jr. · Sole voting: 3,969,803 · Shared voting: 372,325 · Sole dispositive: 3,969,803 · Shared dispositive: 372,325 · SCHEDULE 13D/A, 2026-09-18
- · Holder: Prior Cornelius B Jr · Percent: 28.96% · SCHEDULE 13D/A
- · Holder: Dimensional Fund Advisors LP · Percent: 4.9% · SCHEDULE 13G/A
ATN International, Inc. has 4 Schedule 13D or 13G filings on record since 2026-04-09. 2 holders' latest filing reports 5% or more of com. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Cornelius B. Prior, Jr. | 28.19% | 4,342,128 | SCHEDULE 13D/A, 2026-09-18 | 2026-08-10 |
| Global Alpha Capital Management Ltd. | 8.5% | 1,305,494 | SCHEDULE 13G/A, 2026-11-09 | 2026-09-30 |
| Dimensional Fund Advisors LP | 4.9% | 748,312 | SCHEDULE 13G/A, 2026-04-09 | 2026-03-31 |
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More on ATN International, Inc. and the records around it.
ATN International, Inc. elsewhere on the record
- Leadership changes Jul 2026
- Who owns it
Companies that share a holder
- Global Alpha Capital Management Ltd. also filed stake reports on 4 other companies: Caesarstone Ltd. (Feb 2026)
- Dimensional Fund Advisors LP also filed stake reports on 366 other companies: Acadia Healthcare Co Inc (Oct 2026), ADT Inc (Oct 2026), AGCO Corp (Oct 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Cornelius B. Prior, Jr. | 3,969,803 | 372,325 | 3,969,803 | 372,325 | SCHEDULE 13D/A, 2026-09-18 |
| Global Alpha Capital Management Ltd. | 972,165 | 0 | 1,305,494 | 0 | SCHEDULE 13G/A, 2026-11-09 |
The latest filing identifies ATN International, Inc. by CUSIP 00215F107 and gives its principal executive office as 500 Cummings Center, Suite 2450, Beverly, MA 01915 (SCHEDULE 13G/A, 2026-11-09).
Purpose of Transaction (Item 4)
Cornelius B. Prior, Jr.
Item 4 of the Schedule 13D is hereby amended and restated as follows: Mr. Prior entered into the University Agreement and committed to the Planned Gift for charitable purposes. The University Agreement provides that the Planned Gift will be fulfilled in 16 installments on or by March 3, 2028, with eight Installments consisting of monthly transfers of $375,000 to the University from August 2026 to March 2027 and eight Installments consisting of monthly transfers of $250,000 to the University from August 2027 to March 2028. As of the date of this Amendment No. 2, Mr. Prior intends to satisfy the Planned Gift by transferring an aggregate of $5 million in shares of Common Stock to the University, and as of the date of this Amendment No. 2, two of the Installments have been completed by Mr. Prior's transfer to the University of 12,000 shares of Common Stock on August 10, 2026 and of 12,500 shares of Common Stock on September 4, 2026. Additionally, as of the date of this Amendment No. 2, VI E-Cell expects to sell 20,174 shares of Common Stock prior to December 31, 2026, and the Foundation expects to sell 5,000 shares of Common Stock prior to December 31, 2026. Mr. Prior may continue to explore opportunities to gift or sell (in the open market, through negotiated or private transactions or otherwise), subject to market conditions and other factors, additional shares of Common Stock that he directly and indirectly beneficially owns, including for charitable, tax, and/or estate …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-09-18; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-04-09 | Dimensional Fund Advisors LP | 4.9% | SCHEDULE 13G/A |
| 2026-06-15 | Prior Cornelius B Jr | 28.96% | SCHEDULE 13D/A |
| 2026-09-18 | Cornelius B. Prior, Jr. | 28.19% | SCHEDULE 13D/A |
| 2026-11-09 | Global Alpha Capital Management Ltd. | 8.5% | SCHEDULE 13G/A |
Questions about who owns ATN International, Inc.
Who owns ATN International, Inc.?
On this page, 2 holders' latest ownership filings report 5% or more of ATN International, Inc.: Cornelius B. Prior, Jr. (28.19%, Schedule 13D/A, filed 2026-09-18) and Global Alpha Capital Management Ltd. (8.5%, Schedule 13G/A, filed 2026-11-09).
Who are the largest shareholders of ATN International, Inc.?
By the share each holder's latest filing reports, the largest holders of ATN International, Inc. on this page are Cornelius B. Prior, Jr. (28.19%) and Global Alpha Capital Management Ltd. (8.5%).
When did Cornelius B. Prior, Jr. buy into ATN International, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Cornelius B. Prior, Jr. on this page is the Schedule 13D/A, filed 2026-09-18, reporting 28.19%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 4 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for ATN International, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| November 3, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| July 31, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| April 7, 2026 | Leadership change: Naji N. Khoury appointed, President and Chief Executive Officer, and 1 more | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.