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SCHEDULE 13D/A
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0000929638-26-002223
Stake: 28.96%
Shares: 4,454,390
CUSIP: 00215F107
Class: Common Stock, par value $.01 per share
Composite Decision Signal · PASS (LOW BASE-RATE EDGE)
Conviction Score: 31/100 · Filer 90d Win Rate: 0% · Hist. 90d Edge: -18.2%
- Active Schedule 13D filer baseline
- High conviction ownership stake (29.0%)
- 11 NPORT-P mutual funds holding CUSIP
- Moderate short days-to-cover (4.4 DTC)
Item 4 — Purpose of Transaction
Except as described in this Amendment No. 1 to Schedule 13D, Mr. Prior does not have any present plans or proposals that relate to or would result in any of the actions described in Item 4 of this Schedule 13D, although, Mr. Prior, at any time and from time to time, may review, reconsider and change his position and/or change his purpose and/or develop such plans and may seek to influence management of the Issuer or the board of directors of the Issuer with respect to the business and affairs of the Issuer and may from time to time consider pursuing or proposing such matters with advisors, the Issuer or other persons. Any such action may be made by Mr. Prior alone or in conjunction with other stockholders, potential acquirers, financing sources and/or other third parties and could include one or more purposes, plans or proposals that relate to or would result in actions required to be reported herein in accordance with Item 4 of Schedule 13D.
Cross-References
Insider Activity (last 365d)
17 transactions
0 buys · 14 sales · 3 awards/exercises
Issuer Cluster
2 13D/G filings on this issuer
1 other filing besides this one
Filer Track Record
2 filings by this filer
1 other filing in the data moat
Short Interest · settle 2026-10-15
DTC 4.44
365,071 shares short · +4.3% vs prior
Post-Filing Returns · since 2026-04-20 on ATNI
Anchor price 27.95 on closest trading day on/after 2026-04-20. Source: Yahoo Finance daily adj_close (split + dividend adjusted).
Form 4 Insider Transactions · last 365d
| Date | Insider | Role | Type | Shares | Price | Value |
|---|
| 2026-06-12 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
19,100 |
$27.96 |
$534K |
| 2026-06-11 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
2,000 |
$27.30 |
$55K |
| 2026-06-03 |
PRIOR CORNELIUS B JR |
10%+ owner |
Gift |
10,000 |
— |
— |
| 2026-06-02 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
6,000 |
$28.30 |
$170K |
| 2026-06-01 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
12,610 |
$28.29 |
$357K |
| 2026-05-28 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
2,500 |
$28.25 |
$71K |
| 2026-05-27 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
17,500 |
$28.17 |
$493K |
| 2026-05-27 |
PRIOR CORNELIUS B JR |
10%+ owner |
Gift |
30,000 |
— |
— |
| 2026-05-26 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
2,854 |
$27.96 |
$80K |
| 2026-05-21 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
2,000 |
$27.25 |
$55K |
| 2026-05-20 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
3,500 |
$27.02 |
$95K |
| 2026-05-14 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
2,000 |
$27.25 |
$55K |
| 2026-05-11 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
5,000 |
$27.25 |
$136K |
| 2026-05-08 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
1,000 |
$26.25 |
$26K |
| 2026-05-07 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
3,500 |
$25.54 |
$89K |
| 2026-05-07 |
PRIOR CORNELIUS B JR |
10%+ owner |
Sale |
2,500 |
$26.00 |
$65K |
| 2026-04-20 |
PRIOR CORNELIUS B JR |
10%+ owner |
Gift |
200,000 |
— |
— |
Other 13D/G Filings on ATN International, Inc.
| Filed | Form | Filer | Stake | Shares | |
|---|
| 2026-09-18 |
SCHEDULE 13D/A |
PRIOR CORNELIUS B JR |
28.19% |
4,342,128 |
view → |
Other Filings by PRIOR CORNELIUS B JR
| Filed | Form | Issuer | Stake | Shares | |
|---|
| 2026-09-18 |
SCHEDULE 13D/A |
ATN International, Inc. |
28.19% |
4,342,128 |
view → |
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