MICHAEL T PRIOR
CIK 1244465 · CHAIRMAN AND CEO · last filed 2026-03-27
MICHAEL T PRIOR is a CHAIRMAN AND CEO who has filed 121 SEC Form 4 insider transactions across 1 company since 2007. The most recent filing shows the insider had shares withheld for taxes covering $168.8K of ATNI on Mar 27, 2026. Across all open-market trades the lifetime net is −$4.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $16.7M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$16.72M
1
121
-$4.61M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ATNI | Director | 589,254 | $28.37 | $16.72M | -$4.61M | 121 | 2026-03-27 |
Recent Filings
121 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-27 | ATNI | Tax (F) | −6,877 | -$168.8K | EDGAR |
| 2026-03-27 | ATNI | Mixed | +5,088 | -$227.6K | EDGAR |
| 2026-03-27 | ATNI | Tax (F) | −2,378 | -$66.4K | EDGAR |
| 2026-03-27 | ATNI | Grant (A) | +13,524 | $0 | EDGAR |
| 2025-04-09 | ATNI | Grant (A) | +42,472 | $0 | EDGAR |
| 2025-03-27 | ATNI | Exer (M) | +13,514 | $0 | EDGAR |
| 2024-04-30 | ATNI | Buy (P) | +10,000 | $198.8K | EDGAR |
| 2024-03-27 | ATNI | Tax (F) | −2,431 | -$73.4K | EDGAR |
| 2024-03-21 | ATNI | Grant (A) | +21,720 | $0 | EDGAR |
| 2024-03-14 | ATNI | Grant (A) | +21,720 | $0 | EDGAR |