What SEC filings does ATN International, Inc. submit to the SEC?

ATN International, Inc. (ATNI) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about ATNI?

A Form 4 for ATNI discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from ATN International, Inc.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for ATNI?

The 10-K is ATN International, Inc.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all ATNI SEC filings directly on EDGAR?

You can view all historical ATN International, Inc. filings on the SEC EDGAR company page for ATNI. Each filing card on this page links directly to the original SEC document.

How often does ATN International, Inc. file with the SEC?

ATN International, Inc. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling ATNI shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

ATNI SEC Filing News — ATN International, Inc.

Latest SEC filings for ATN International, Inc. (ATNI) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-10-05.

ATN International, Inc., through its subsidiaries, provides digital infrastructure and communications services to residential, business, and government customers in the United States, Guyana, the US Virgin Islands, Bermuda, and internationally. It operates through International Telecom and US Telecom segments. The company offers fixed data and voice telecommunication services comprising fiber broadband and data solutions; carrier telecommunication services consisting of the leasing of tower and …

Sector: Communication Services Industry: Telecom Services Market Cap: $396.6M CIK: 879585

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for ATNI currently lean bearish. Of the 20 filing records displayed, 11 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.

ATNI Filing Activity Snapshot 2026-08-06 — 2026-10-05

Insider Transactions (Form 4)

0 buys vs 11 sells

Net insider selling in this period — insiders sell for many reasons beyond conviction.

Largest Form 144 Filing

$334.2K

PRIOR CORNELIUS B JR (10% Owner) · 2026-08-21

10,500 shares · Form 4

Form 144 Notices

Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 12 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 12 filings in this group are Form 4s for ATN International, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 12 insider filings shown, the breakdown is 11 open-market sale and 1 gift. 11 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×11: The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Gift ×1: Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Form 4 Gift Tax / Compensation Filing 2026-10-05

ATNI insider Form 4 filed for equity award, exercise, or tax withholding

PRIOR CORNELIUS B JR (10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	13,500	—	—

Filing: Form 4 (Insider Transaction) Insider: PRIOR CORNELIUS B JR (10% Owner) Shares: 13,500

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-18

ATNI insider PRIOR CORNELIUS B JR (10% Owner) sold 9,867 shares (~$307.7K)

PRIOR CORNELIUS B JR, listed as 10% Owner at ATN International, Inc., reported an open-market sale of 9,867 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	4,500	$31.03	$139.6K
`S`	Open-market sale	5,367	$31.32	$168.1K
`G`	Gift	12,500	—	—

Filing: Form 4 (Insider Transaction) Insider: PRIOR CORNELIUS B JR (10% Owner) Shares: 9,867 Est. Value: $307.7K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-04

ATNI insider PRIOR CORNELIUS B JR (10% Owner) sold 7,124 shares (~$221.2K)

PRIOR CORNELIUS B JR, listed as 10% Owner at ATN International, Inc., reported an open-market sale of 7,124 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	2,582	$31.12	$80.3K
`S`	Open-market sale	4,542	$31.02	$140.9K

Filing: Form 4 (Insider Transaction) Insider: PRIOR CORNELIUS B JR (10% Owner) Shares: 7,124 Est. Value: $221.2K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-02

ATNI insider Jacobs Patricia (Director) sold 1,500 shares (~$45.1K)

Jacobs Patricia, listed as Director at ATN International, Inc., reported an open-market sale of 1,500 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	1,500	$30.04	$45.1K

Filing: Form 4 (Insider Transaction) Insider: Jacobs Patricia (Director) Shares: 1,500 Est. Value: $45.1K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-26

ATNI insider PRIOR CORNELIUS B JR (10% Owner) sold 10,000 shares (~$313.4K)

PRIOR CORNELIUS B JR, listed as 10% Owner at ATN International, Inc., reported an open-market sale of 10,000 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	10,000	$31.34	$313.4K

Filing: Form 4 (Insider Transaction) Insider: PRIOR CORNELIUS B JR (10% Owner) Shares: 10,000 Est. Value: $313.4K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-21

ATNI insider PRIOR CORNELIUS B JR (10% Owner) sold 10,500 shares (~$334.2K)

PRIOR CORNELIUS B JR, listed as 10% Owner at ATN International, Inc., reported an open-market sale of 10,500 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	10,000	$31.86	$318.6K
`S`	Open-market sale	500	$31.25	$15.6K

Filing: Form 4 (Insider Transaction) Insider: PRIOR CORNELIUS B JR (10% Owner) Shares: 10,500 Est. Value: $334.2K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-21

ATNI insider Jacobs Patricia (Director) sold 1,000 shares (~$31.1K)

Jacobs Patricia, listed as Director at ATN International, Inc., reported an open-market sale of 1,000 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	1,000	$31.14	$31.1K

Filing: Form 4 (Insider Transaction) Insider: Jacobs Patricia (Director) Shares: 1,000 Est. Value: $31.1K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-19

ATNI insider PRIOR CORNELIUS B JR (10% Owner) sold 6,745 shares (~$214.4K)

PRIOR CORNELIUS B JR, listed as 10% Owner at ATN International, Inc., reported an open-market sale of 6,745 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	5,745	$31.79	$182.7K
`S`	Open-market sale	1,000	$31.75	$31.8K

Filing: Form 4 (Insider Transaction) Insider: PRIOR CORNELIUS B JR (10% Owner) Shares: 6,745 Est. Value: $214.4K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-17

ATNI insider PRIOR CORNELIUS B JR (10% Owner) sold 2,526 shares (~$81.0K)

PRIOR CORNELIUS B JR, listed as 10% Owner at ATN International, Inc., reported an open-market sale of 2,526 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	2,500	$32.05	$80.1K
`S`	Open-market sale	26	$32.10	$834.60

Filing: Form 4 (Insider Transaction) Insider: PRIOR CORNELIUS B JR (10% Owner) Shares: 2,526 Est. Value: $81.0K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-12

ATNI insider PRIOR CORNELIUS B JR (10% Owner) sold 7,000 shares (~$227.8K)

PRIOR CORNELIUS B JR, listed as 10% Owner at ATN International, Inc., reported an open-market sale of 7,000 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	12,000	—	—
`S`	Open-market sale	6,500	$32.49	$211.2K
`S`	Open-market sale	500	$33.25	$16.6K

Filing: Form 4 (Insider Transaction) Insider: PRIOR CORNELIUS B JR (10% Owner) Shares: 7,000 Est. Value: $227.8K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-11

ATNI insider Mabey Mary (SVP AND GENERAL COUNSEL) sold 5,000 shares (~$160.6K)

Mabey Mary, listed as SVP AND GENERAL COUNSEL at ATN International, Inc., reported an open-market sale of 5,000 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	5,000	$32.12	$160.6K

Filing: Form 4 (Insider Transaction) Insider: Mabey Mary (SVP AND GENERAL COUNSEL) Shares: 5,000 Est. Value: $160.6K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-10

ATNI insider PRIOR CORNELIUS B JR (10% Owner) sold 7,500 shares (~$223.7K)

PRIOR CORNELIUS B JR, listed as 10% Owner at ATN International, Inc., reported an open-market sale of 7,500 ATNI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	500	$28.76	$14.4K
`S`	Open-market sale	500	$30.50	$15.2K
`S`	Open-market sale	500	$28.80	$14.4K
`S`	Open-market sale	500	$30.30	$15.2K
`S`	Open-market sale	500	$30.30	$15.2K
`S`	Open-market sale	500	$28.96	$14.5K
`S`	Open-market sale	500	$30.30	$15.2K
`S`	Open-market sale	500	$28.95	$14.5K
`S`	Open-market sale	500	$30.35	$15.2K
`S`	Open-market sale	500	$29.10	$14.6K
`S`	Open-market sale	500	$30.25	$15.1K
`S`	Open-market sale	500	$29.15	$14.6K
`S`	Open-market sale	500	$30.35	$15.2K
`S`	Open-market sale	500	$30.25	$15.1K
`S`	Open-market sale	500	$31.17	$15.6K

Filing: Form 4 (Insider Transaction) Insider: PRIOR CORNELIUS B JR (10% Owner) Shares: 7,500 Est. Value: $223.7K

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 6 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. ATN International, Inc. has 6 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-09-15

ATNI Form 144 filed for proposed insider sale

An insider at ATN International, Inc. filed a Form 144 notifying the SEC of an intent to sell shares. Form 144 is a proposed sale notice rather than confirmation that a sale already happened.

Filing: Form 144 (Proposed Sale Notice)

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-24

ATNI Form 144 filed for proposed insider sale

An insider at ATN International, Inc. filed a Form 144 notifying the SEC of an intent to sell shares. Form 144 is a proposed sale notice rather than confirmation that a sale already happened.

Filing: Form 144 (Proposed Sale Notice)

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-20

ATNI Form 144 filed for proposed insider sale

An insider at ATN International, Inc. filed a Form 144 notifying the SEC of an intent to sell shares. Form 144 is a proposed sale notice rather than confirmation that a sale already happened.

Filing: Form 144 (Proposed Sale Notice)

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-17

ATNI Form 144 filed for proposed insider sale

An insider at ATN International, Inc. filed a Form 144 notifying the SEC of an intent to sell shares. Form 144 is a proposed sale notice rather than confirmation that a sale already happened.

Filing: Form 144 (Proposed Sale Notice)

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-14

ATNI Form 144 filed for proposed insider sale

An insider at ATN International, Inc. filed a Form 144 notifying the SEC of an intent to sell shares. Form 144 is a proposed sale notice rather than confirmation that a sale already happened.

Filing: Form 144 (Proposed Sale Notice)

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-10

ATNI Form 144 filed for proposed insider sale

An insider at ATN International, Inc. filed a Form 144 notifying the SEC of an intent to sell shares. Form 144 is a proposed sale notice rather than confirmation that a sale already happened.

Filing: Form 144 (Proposed Sale Notice)

View on SEC EDGAR → Open Filing Document →

Material Events 1 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There is 1 in this period for ATN International, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-06

ATNI filed 8-K — material company event

ATN International, Inc. filed an 8-K with the SEC reporting a material event. Read the SEC filing for the full details.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for ATN International, Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-10

ATNI filed Quarterly Report (10-Q)

ATN International, Inc. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

How we classify ATN International, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on ATNI. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — ATNI SEC Filings

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ATNI Full Analysis

Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

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