Michael T. Prior
CHAIRMAN AND CEO at ATN International Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: ATN International Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
ATN International Inc. June 16, 202696.8%
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ATN International Inc. June 17, 202595.2%
-
ATN International Inc. June 18, 202496.6%
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ATN International Inc. June 6, 202399.1%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 25, 2026 | ATN International Inc. | Shares withheld for tax | −2,378 | $27.92 | $66,394 |
| Mar 17, 2026 | ATN International Inc. | Grant or award | +13,524 | — | — |
| Mar 13, 2026 | ATN International Inc. | Shares withheld for tax | −4,686 | $24.49 | $114,760 |
| Mar 12, 2026 | ATN International Inc. | Shares withheld for tax | −2,191 | $24.65 | $54,008 |
| Mar 7, 2026 | ATN International Inc. | Option exercise | +14,500 | — | — |
| Mar 7, 2026 | ATN International Inc. | Shares withheld for tax | −6,430 | $24.18 | $155,477 |
| Mar 7, 2026 | ATN International Inc. | Shares withheld for tax | −2,982 | $24.18 | $72,105 |
| Apr 7, 2025 | ATN International Inc. | Grant or award | +42,472 | — | — |
| Mar 25, 2025 | ATN International Inc. | Option exercise | +13,514 | — | — |
| Apr 29, 2024 | ATN International Inc. | Open-market purchase | +10,000 | $19.88 | $198,800 |
| Mar 25, 2024 | ATN International Inc. | Shares withheld for tax | −2,431 | $30.21 | $73,441 |
| Mar 12, 2024 | ATN International Inc. | Grant or award | +21,720 | — | — |
| Mar 11, 2024 | ATN International Inc. | Shares withheld for tax | −3,186 | $32.99 | $105,106 |
| Mar 9, 2024 | ATN International Inc. | Shares withheld for tax | −2,271 | $33.06 | $75,079 |
| Mar 8, 2024 | ATN International Inc. | Option exercise | +16,641 | — | — |
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