PRIOR MICHAEL T 4

What Happened

• Michael T. Prior, Executive Chairman and Director of ATN International (ATNI), had equity awards vest/convert on March 7, 2026. The Form 4 reports conversion/exercise-of-derivative entries for 14,500 shares (acquired) and 25,000 shares (reported as converted/derivative, $0 proceeds).
• To satisfy tax obligations on vested awards, the company withheld 6,430 shares (disposed) and 2,982 shares (disposed) at $24.18 per share, totaling $227,582 in tax-withholding. These withholding transactions are routine and reflect tax payment, not an open-market sale for cash.

Key Details

• Transaction date: 2026-03-07; Form 4 filed 2026-03-27 (appears late — insiders normally must file within 2 business days).
• Reported derivative/vesting entries: 14,500 shares (acquired, price N/A) and 25,000 shares (derivative converted, $0).
• Shares withheld for taxes: 6,430 shares ($155,477) and 2,982 shares ($72,105) at $24.18 each; total withheld = 9,412 shares for $227,582.
• Shares owned after the transaction: not specified in the provided data.
• Footnotes: F1 indicates the shares arose from vested performance-based RSUs/PSUs (58% of target payout for the performance period ending Mar 7, 2026). F3 and F4 confirm the withheld shares were to pay tax obligations on vested PSUs and RSUs.

Context

• These entries reflect vesting/conversion of performance and restricted stock units and routine share withholding to cover taxes (transaction codes M = exercise/conversion of derivative; F = tax withholding/payment). Withheld-share transactions are not the same as an open-market sale for investment reasons.
• The late filing may draw attention but does not by itself indicate intent or trading strategy; retail investors should note the vesting is compensation-related rather than a discretionary sale by the insider.