ATNI SEC Filings: 8-K, 10-Q, S-3 & 424B

Financials

TYPE

HEADLINE

FILED AT

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Nov 6, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Aug 10, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

May 11, 2026

10-K

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

Mar 16, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Nov 10, 2025

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Aug 11, 2025

News

TYPE

HEADLINE

FILED AT

8-K

ATN International Reports Third Quarter 2026 Results and Updates Full-Year Outlook

Nov 4, 2026

8-K/A

Form 8-K/A - Current report: [Amend] - Item 5.02 Item 9.01

Nov 3, 2026

8-K

ATN International Reports Q2 2026 Results, Increases Share Repurchase Authorization, and Reaffirms 2026 Outlook

Aug 5, 2026

8-K

ATN International, Inc. Announces Departure of Senior Vice President and General Counsel

Jul 31, 2026

8-K

ATN International, Inc. Announces Results of 2026 Annual Meeting of Stockholders

Jun 17, 2026

8-K

ATN International Completes Initial Closing of Tower Portfolio Sale and Updates 2026 Outlook

Jun 3, 2026

Prospectus

TYPE

HEADLINE

FILED AT

424B5

Form 424B5 - Prospectus [Rule 424(b)(5)]

Jul 21, 2006

424B3

Form 424B3 - Prospectus [Rule 424(b)(3)]

Jul 3, 2006

Registrations

TYPE

HEADLINE

FILED AT

S-8

Form S-8 - Securities to be offered to employees in employee benefit plans

Mar 18, 2026

S-3

August 2025 SHELF | Offering amount: $300,000,000

Aug 15, 2025

S-8

Form S-8 - Securities to be offered to employees in employee benefit plans

Aug 3, 2023

S-3

SHELF | Offering amount: $300,000,000.00 EFFECTIVE

Aug 9, 2022

S-3ASR

Form S-3ASR - Automatic shelf registration statement of securities of well-known seasoned issuers

May 12, 2020

S-3ASR

Form S-3ASR - Automatic shelf registration statement of securities of well-known seasoned issuers

May 12, 2017

Proxies

TYPE

HEADLINE

FILED AT

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Apr 28, 2026

DEF 14A

Form DEF 14A - Other definitive proxy statements

Apr 28, 2026

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Apr 30, 2025

DEF 14A

Form DEF 14A - Other definitive proxy statements

Apr 30, 2025

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Apr 29, 2024

DEF 14A

Form DEF 14A - Other definitive proxy statements

Apr 29, 2024

Ownerships

TYPE

HEADLINE

FILED AT

SCHEDULE 13G/A

NEWGlobal Alpha Capital Management Ltd. (Filed by)

Nov 9, 2026

PRIOR CORNELIUS B JR (Reporting)

Nov 5, 2026

PRIOR CORNELIUS B JR (Reporting)

Oct 5, 2026

PRIOR CORNELIUS B JR (Reporting)

Sep 18, 2026

SCHEDULE 13D/A

PRIOR CORNELIUS B JR (Filed by)

Sep 18, 2026

144

Form 144 - Report of proposed sale of securities

Sep 15, 2026

Other

TYPE

HEADLINE

FILED AT

EFFECT

Form EFFECT - Notice of Effectiveness

Aug 29, 2025

CORRESP

Form CORRESP - Correspondence

Aug 26, 2025

LETTER

Form UPLOAD - SEC-generated letter

Aug 22, 2025

LETTER

Form UPLOAD - SEC-generated letter

Jul 30, 2024

CORRESP

Form CORRESP - Correspondence

Jul 29, 2024

LETTER

Form UPLOAD - SEC-generated letter

Jul 17, 2024

ATN International, Inc. ATNI · SEC Filings