ISSUER PROFILE · CIK 0000879585 · CUSIP 00215F107

ATN International, Inc.ATNI

1 13D/G filings 1 distinct filers 17 insider transactions (365d)

Post-Filing Returns · across 1 activist filings on this issuer

Median 30d

-4.3%

avg -4.3%

Median 60d

-7.6%

avg -7.6%

Median 90d

-18.2%

avg -18.2%

Median 180d

—

avg —

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Activist filings

1 SCHEDULE 13D/A

Distinct filers

single filer

Insiders (365d)

0 buys · 14 sales

Latest short DTC

2.95

as of 2026-07-15

Filed	Form	Filer	Stake	Shares	Intent
2026-06-15	SCHEDULE 13D/A	PRIOR CORNELIUS B JR	28.96%	4,454,390		view →

Date	Insider	Role	Type	Shares	Price	Value
2026-06-12	PRIOR CORNELIUS B JR	10%+	Sale	19,100	$27.96	$534K
2026-06-11	PRIOR CORNELIUS B JR	10%+	Sale	2,000	$27.30	$55K
2026-06-03	PRIOR CORNELIUS B JR	10%+	Gift	10,000	—	—
2026-06-02	PRIOR CORNELIUS B JR	10%+	Sale	6,000	$28.30	$170K
2026-06-01	PRIOR CORNELIUS B JR	10%+	Sale	12,610	$28.29	$357K
2026-05-28	PRIOR CORNELIUS B JR	10%+	Sale	2,500	$28.25	$71K
2026-05-27	PRIOR CORNELIUS B JR	10%+	Sale	17,500	$28.17	$493K
2026-05-27	PRIOR CORNELIUS B JR	10%+	Gift	30,000	—	—
2026-05-26	PRIOR CORNELIUS B JR	10%+	Sale	2,854	$27.96	$80K
2026-05-21	PRIOR CORNELIUS B JR	10%+	Sale	2,000	$27.25	$55K
2026-05-20	PRIOR CORNELIUS B JR	10%+	Sale	3,500	$27.02	$95K
2026-05-14	PRIOR CORNELIUS B JR	10%+	Sale	2,000	$27.25	$55K
2026-05-11	PRIOR CORNELIUS B JR	10%+	Sale	5,000	$27.25	$136K
2026-05-08	PRIOR CORNELIUS B JR	10%+	Sale	1,000	$26.25	$26K
2026-05-07	PRIOR CORNELIUS B JR	10%+	Sale	3,500	$25.54	$89K
2026-05-07	PRIOR CORNELIUS B JR	10%+	Sale	2,500	$26.00	$65K
2026-04-20	PRIOR CORNELIUS B JR	10%+	Gift	200,000	—	—

Settlement	Short Interest	Days to Cover	% Δ vs prior
2026-07-15	227,552	2.95	+16.3%
2026-06-30	195,587	1.98	+10.5%
2026-06-15	177,004	2.62	-0.5%
2026-05-29	177,879	2.69	+9.5%
2026-05-15	162,468	2.19	+2.2%
2026-04-30	159,038	2.54	+7.5%
2026-04-15	147,902	1.92	-1.7%
2026-03-31	150,436	1.96	+9.5%
2026-03-13	137,437	1.03	+20.4%
2026-02-27	114,131	2.45	-0.2%
2026-02-13	114,341	1.80	+15.6%
2026-01-30	98,935	2.12	-3.3%

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