STOCK TITAN

ATN International (ATNI) major holder entity sells 7,500 insider shares

(Moderate)
(Negative)
Form Type
4

Rhea-AI Filing Summary

ATN International, Inc. insider Cornelius B. Prior Jr., a ten percent owner, reported that an entity associated with him, VI E-Cell Tropical Telecom Ltd, sold a total of 7,500 shares of common stock on August 6–7, 2026 in multiple open-market or private transactions at per-share prices between $28.75 and $31.17. Following these transactions, reported holdings include 3,994,303 shares held directly, plus additional indirect positions through a spouse, Tropical Aircraft Co., and a revocable trust.

Positive

  • None.

Negative

  • None.
Insider PRIOR CORNELIUS B JR
Role 10% Owner
Sold 7,500 shs ($224K)
Type Security Shares Price Value
Sale Common Stock 500 $31.17 $16K
Sale Common Stock 500 $28.7555 $14K
Sale Common Stock 500 $30.50 $15K
Sale Common Stock 500 $28.796 $14K
Sale Common Stock 500 $30.3031 $15K
Sale Common Stock 500 $30.30 $15K
Sale Common Stock 500 $28.964 $14K
Sale Common Stock 500 $30.30 $15K
Sale Common Stock 500 $28.95 $14K
Sale Common Stock 500 $30.35 $15K
Sale Common Stock 500 $29.10 $15K
Sale Common Stock 500 $30.25 $15K
Sale Common Stock 500 $29.15 $15K
Sale Common Stock 500 $30.35 $15K
Sale Common Stock 500 $30.25 $15K
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 73,936 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)
Shares sold 7,500 shares Total common shares sold by VI E-Cell Tropical Telecom Ltd on August 6–7, 2026
Lowest sale price $28.75 per share Reported per-share sale prices on August 6, 2026
Highest sale price $31.17 per share Reported per-share sale price on August 7, 2026
Direct holdings 3,994,303 shares Common stock held directly by Cornelius B. Prior Jr. after reported transactions
Indirect holdings – spouse 500 shares Common stock held indirectly "By: Wife"
Indirect holdings – Tropical Aircraft Co. 8,227 shares Common stock held indirectly through Tropical Aircraft Co.
Indirect holdings – Revocable Trust 363,424 shares Common stock held indirectly as Trustee of Revocable Trust
ten percent owner regulatory
"reporting person is identified as a ten percent owner"
indirect ownership financial
"ownership_type field shows indirect ownership for several positions"
Revocable Trust financial
"nature_of_ownership notes Trustee of Revocable Trust"
A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.
open market or private transaction financial
"transaction_code_description states Sale in open market or private transaction"

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FAQ

What did ATN International (ATNI) insider Cornelius B. Prior Jr. report in this Form 4?

He reported that an associated entity, VI E-Cell Tropical Telecom Ltd, sold 7,500 ATNI common shares on August 6–7, 2026 in multiple open-market or private transactions.

How many ATN International (ATNI) shares were sold and over what dates?

An entity linked to Cornelius B. Prior Jr. sold 7,500 shares of ATN International common stock over August 6–7, 2026, reported as a series of 15 separate 500-share sale transactions.

What price range did the ATN International (ATNI) insider sales occur at?

The reported sales by the associated entity occurred at per-share prices between $28.75 and $31.17, with each individual transaction involving 500 shares of ATN International common stock.

What are Cornelius B. Prior Jr.’s reported ATN International (ATNI) holdings after these sales?

Reported holdings include 3,994,303 shares held directly, plus indirect holdings of 500 shares through his wife, 8,227 shares via Tropical Aircraft Co., and 363,424 shares as trustee of a revocable trust.

Were the ATN International (ATNI) insider transactions under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not marked as affirming a plan, and there are no transaction-specific footnotes indicating that these 7,500-share sales were executed pursuant to a Rule 10b5-1 trading arrangement.

Is Cornelius B. Prior Jr. a large shareholder of ATN International (ATNI)?

Yes. He is identified as a ten percent owner of ATN International, with reported direct holdings of 3,994,303 common shares and additional indirect holdings through family and affiliated entities.
SEC Form 4
FORM 4UNITED 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)
DirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/06/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock08/06/2026S500D$28.755580,936IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$30.580,436IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$28.79679,936IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$30.303179,436IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$30.378,936IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$28.96478,436IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$30.377,936IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$28.9577,436IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$30.3576,936IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$29.176,436IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$30.2575,936IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$29.1575,436IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$30.3574,936IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/06/2026S500D$30.2574,436IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/07/2026S500D$31.1773,936IBy VI E-Cell Tropical Telecom Ltd
Common Stock3,994,303D
Common Stock500IBy: Wife
Common Stock8,227IBy Tropical Aircraft Co.
Common Stock363,424ITrustee 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
/s/ Andy Fienberg , Attorney-in-Fact08/10/2026
** Signature of Reporting PersonDate
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)