Michael T. Prior is CEO & President at ATN International, Inc. (ATNI). They have made 28 open-market trades across 1 company since 2007, most recently 2026-03-25.
CIK 0001244465
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
3 open-market purchases totalling $539K since 2009, against 25 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ATNI | 587,673 | $15.1M |
Shares reported on the most recent Form 4, priced at the 2026-03-27 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ATNI | BUY | 2024-04-29 | 2024-04-30 | $19.88 | $199K | +29.4% | +23.6% | +41.1% |
| ATNI | BUY | 2023-11-20 | 2023-11-22 | $31.11 | $311K | +1.1% | +18.6% | +16.2% |
| ATNI | SELL | 2020-08-11 | 2020-08-13 | $60.16 | $120K | +2.1% | -14.9% | -13.0% |
| ATNI | SELL · 10b5-1 | 2020-07-30 | 2020-08-03 | $64.02 | $19K | +5.0% | +4.9% | -16.2% |
| ATNI | SELL | 2020-07-15 | 2020-07-17 | $62.49 | $125K | -2.9% | +0.9% | -19.7% |
| ATNI | SELL | 2020-06-01 | 2020-06-02 | $60.43 | $121K | -3.4% | -4.0% | -6.4% |
| ATNI | SELL | 2020-04-29 | 2020-05-01 | $76.64 | $184K | -5.0% | +7.5% | +5.8% |
| ATNI | SELL | 2020-04-23 | 2020-04-27 | $69.73 | $231K | -19.5% | -13.1% | -19.3% |
| ATNI | SELL | 2020-03-17 | 2020-03-19 | $67.55 | $227K | -4.4% | +3.7% | -2.9% |
| ATNI | SELL · 10b5-1 | 2020-02-20 | 2020-02-24 | $62.10 | $45K | -5.2% | -15.0% | -3.2% |
| ATNI | SELL | 2020-02-18 | 2020-02-20 | $62.08 | $183K | -10.3% | -17.6% | -9.5% |
| ATNI | SELL | 2019-11-01 | 2019-11-05 | $58.78 | $392K | -8.5% | -6.6% | -3.4% |
| ATNI | SELL | 2018-09-04 | 2018-09-05 | $72.69 | $73K | -0.6% | -2.0% | +6.4% |
| ATNI | SELL | 2018-08-06 | 2018-08-08 | $64.83 | $324K | +11.9% | +10.7% | +26.1% |
| ATNI | SELL | 2018-07-09 | 2018-07-11 | $56.10 | $56K | -3.7% | +23.7% | +29.3% |
| ATNI | SELL | 2018-06-13 | 2018-06-15 | $53.38 | $43K | -2.3% | +4.2% | +36.4% |
| ATNI | SELL | 2018-06-11 | 2018-06-13 | $55.48 | $111K | -0.8% | +7.0% | +39.2% |
| ATNI | SELL | 2017-12-13 | 2017-12-15 | $55.36 | $665K | +0.3% | +8.8% | +6.2% |
| ATNI | SELL · 10b5-1 | 2016-07-11 | 2016-07-13 | $80.46 | $43K | -2.0% | -20.8% | -19.0% |
| ATNI | SELL · 10b5-1 | 2016-07-06 | 2016-07-08 | $80.07 | $132K | +0.2% | -16.4% | -18.9% |
| ATNI | SELL | 2016-07-01 | 2016-07-06 | $77.45 | $351K | +1.7% | -14.2% | -17.7% |
| ATNI | SELL · 10b5-1 | 2016-06-02 | 2016-06-06 | $72.38 | $69K | +3.4% | +8.1% | -12.0% |
| ATNI | SELL · 10b5-1 | 2016-04-20 | 2016-04-22 | $72.27 | $61K | +3.3% | -0.3% | +10.0% |
| ATNI | SELL | 2016-04-15 | 2016-04-19 | $72.03 | $303K | -0.7% | -2.0% | +11.9% |
| ATNI | SELL | 2015-03-12 | 2015-03-16 | $66.39 | $179K | -1.5% | -3.7% | -3.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.