STOCK TITAN

ATN International (ATNI) insider sells 6,745 shares near $31.75

(Moderate)
(Negative)
Form Type
4

Rhea-AI Filing Summary

ATN International, Inc. (ATNI) insider Prior Cornelius B Jr, a ten percent owner, reported indirect sales of common stock through VI E-Cell Tropical Telecom Ltd. On August 17, 2026, 5,745 shares were sold at a weighted average price of $31.7931 per share in multiple transactions within a disclosed price range. On August 18, 2026, 1,000 shares were sold at a weighted average price of $31.75 per share. After these transactions, reported positions include 3,982,303 shares held directly, 500 shares held indirectly by his wife, and 8,227 shares held indirectly by Tropical Aircraft Co.

Positive

  • None.

Negative

  • None.
Insider PRIOR CORNELIUS B JR
Role 10% Owner
Sold 6,745 shs ($214K)
Type Security Shares Price Value
Sale Common Stock F2 1,000 $31.75 $32K
Sale Common Stock F1 5,745 $31.7931 $183K
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 57,665 shares (Indirect, By VI E-Cell Tropical Telecom Ltd); Common Stock — 3,982,303 shares (Direct); Common Stock — 500 shares (Indirect, By: Wife); Common Stock — 8,227 shares (Indirect, By Tropical Aircraft Co.)
Footnotes (2)
  1. F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.5217 to $32.200040, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
  2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.75 to $31.75, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
Shares sold 2026-08-17 5,745 shares Indirect sale of ATNI common stock on August 17, 2026
Weighted average price 2026-08-17 $31.7931 per share August 17, 2026 indirect sale; trades ranged from $31.5217 to $32.200040
Shares sold 2026-08-18 1,000 shares Indirect sale of ATNI common stock on August 18, 2026
Price 2026-08-18 $31.75 per share Weighted average price; all trades reported at $31.75 on August 18, 2026
Net shares sold 6,745 shares Net sell volume across reported transactions in this filing
Direct holdings after transaction 3,982,303 shares Common stock held directly by reporting person as of August 17, 2026
Indirect holdings by wife 500 shares Common stock held indirectly by wife as of August 17, 2026
Indirect holdings by Tropical Aircraft Co. 8,227 shares Common stock held indirectly via Tropical Aircraft Co. as of August 17, 2026
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
indirect financial
"Indirect sale of ATNI common stock through VI E-Cell Tropical Telecom Ltd"
ten percent owner regulatory
"Prior Cornelius B Jr is reported as a ten percent owner of ATNI."

FAQ

What insider transactions were reported for ATNI by Prior Cornelius B Jr?

Prior Cornelius B Jr reported sales totaling 6,745 ATNI common shares on August 17–18, 2026, through an affiliated entity, at weighted average prices around $31.75–$31.79 per share in multiple transactions within disclosed price ranges.

At what prices were the recent ATNI insider stock sales executed?

The reported ATNI insider sales used weighted average prices of $31.7931 and $31.75 per share. The August 17 trades occurred between $31.5217 and $32.200040, while the August 18 trades occurred at $31.75 per share.

How many ATNI shares did the insider sell in this Form 4 filing?

The filing shows 6,745 ATNI common shares sold, consisting of 5,745 shares on August 17, 2026 and 1,000 shares on August 18, 2026. All were reported as indirect sales through VI E-Cell Tropical Telecom Ltd.

What ATNI shareholdings does Prior Cornelius B Jr report after these transactions?

Reported positions after the transactions include 3,982,303 ATNI shares held directly, plus indirect holdings of 500 shares by his wife and 8,227 shares by Tropical Aircraft Co. The filing does not state a combined total, only these component positions.

Were the ATNI insider sales made under a Rule 10b5-1 trading plan?

The Form 4’s Rule 10b5-1 checkbox is not checked, and the footnotes do not reference any trading plan. The filing therefore does not indicate that these transactions were executed under a Rule 10b5-1 plan.

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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)
08/17/2026
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 Stock08/17/2026S5,745D$31.7931(1)58,665IBy VI E-Cell Tropical Telecom Ltd
Common Stock08/18/2026S1,000D$31.75(2)57,665IBy VI E-Cell Tropical Telecom Ltd
Common Stock3,982,303D
Common Stock500IBy: Wife
Common Stock8,227IBy Tropical Aircraft Co.
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:
1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.5217 to $32.200040, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.75 to $31.75, inclusive. The reporting person undertakes to provide to ATN International, Inc., any security holder of ATN International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
/s/ Andy Fienberg , Attorney-in-Fact08/19/2026
** 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)