As of June 02, 2026, ATN International's top three insider holders are Cornelius B Jr Prior (Chairman, 4.17Mn shares), Michael T Prior (Chairman And Ceo, 587.67K shares), Brad W Martin (Chief Executive Officer, 126.13K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Cornelius B Jr Prior | Chairman | 4,174,303 | 0 | 20 Apr, 2026 |
| Justin D Benincasa | Cfo | 68,135 | 0 | 27 Mar, 2024 |
| James S Eisenstein | - | 8,982 | 0 | 07 Jun, 2022 |
| Michael T Prior | Chairman And Ceo | 587,673 | 0 | 27 Mar, 2026 |
| Bernard J Bulkin | - | 32,429 | 0 | 20 Jun, 2025 |
| Mary Mabey | Svp And General Counsel | 65,402 | 0 | 27 Mar, 2026 |
| Brad W Martin | Chief Executive Officer | 126,129 | 0 | 27 Mar, 2026 |
| Richard J Ganong | - | 23,787 | 0 | 20 Jun, 2024 |
| Patricia Jacobs | - | 17,670 | 0 | 20 Jun, 2025 |
| April Henry | - | 21,550 | 0 | 20 Jun, 2025 |
| Justin M Leon | Svp, Corporate Development | 49,707 | 0 | 27 Mar, 2026 |
| Derek Hudson | - | 12,369 | 0 | 20 Jun, 2025 |
| Carlos Doglioli | Chief Financial Officer | 50,449 | 0 | 19 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 17 Apr, 2026 | Cornelius B Jr Prior | Common Stock | D | 1,700 | $0.00 | 4,174,303 | D | G |
| 17 Apr, 2026 | Cornelius B Jr Prior | Common Stock | D | 1,700 | $0.00 | 4,174,303 | D | G |
| 17 Mar, 2026 | Michael T Prior | Common Stock | A | 13,524 | $0.00 | 590,051 | D | A |
| 12 Mar, 2026 | Michael T Prior | Common Stock | D | 2,191 | $24.65 | 581,213 | D | F |
| 25 Mar, 2026 | Justin M Leon | Common Stock | D | 560 | $27.92 | 49,707 | D | F |
| 12 Mar, 2026 | Michael T Prior | Common Stock | D | 2,191 | $24.65 | 581,213 | D | F |
| 07 Mar, 2026 | Michael T Prior | Common Stock | A | 14,500 | - | 592,816 | D | M |
| 07 Mar, 2026 | Michael T Prior | Common Stock | A | 14,500 | - | 592,816 | D | M |
| 12 Mar, 2026 | Michael T Prior | Common Stock | D | 2,191 | $24.65 | 581,213 | D | F |
| 25 Mar, 2026 | Michael T Prior | Common Stock | D | 2,378 | $27.92 | 587,673 | D | F |
| 25 Mar, 2026 | Brad W Martin | Common Stock | D | 1,237 | $27.92 | 126,129 | D | F |
| 25 Mar, 2026 | Justin M Leon | Common Stock | D | 560 | $27.92 | 49,707 | D | F |
| 17 Mar, 2026 | Michael T Prior | Common Stock | A | 13,524 | $0.00 | 590,051 | D | A |
| 07 Mar, 2026 | Michael T Prior | Common Stock | A | 14,500 | - | 592,816 | D | M |
| 25 Mar, 2026 | Michael T Prior | Common Stock | D | 2,378 | $27.92 | 587,673 | D | F |
| 17 Mar, 2026 | Michael T Prior | Common Stock | A | 13,524 | $0.00 | 590,051 | D | A |
| 25 Mar, 2026 | Mary Mabey | Common Stock | D | 875 | $27.92 | 65,402 | D | F |
| 25 Mar, 2026 | Mary Mabey | Common Stock | D | 875 | $27.92 | 65,402 | D | F |
| 25 Mar, 2026 | Brad W Martin | Common Stock | D | 1,237 | $27.92 | 126,129 | D | F |
| 25 Mar, 2026 | Michael T Prior | Common Stock | D | 2,378 | $27.92 | 587,673 | D | F |