As of September 29, 2026, the three largest insider holders of INSW are Finance Ltd Famatown (TenPercentOwner, 7.81Mn shares), Lois K Zabrocky (President Ceo, 210.75K shares), Lois K Zabrocky (President Ceo, 171.75K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Finance Ltd Famatown | TenPercentOwner | 0 | 7,810,494 | 7,810,494 | 78.5% | 12 Mar, 2026 |
| 2 | Lois K Zabrocky | President Ceo | 527,535 | 0 | 527,535 | 5.3% | 16 Sep, 2026 |
| 3 | James D Iii Small | Cao,Svp,Sec. General Counsel | 312,614 | 0 | 312,614 | 3.1% | 16 Mar, 2026 |
| 4 | William F. Nugent | Senior Vice President | 257,470 | 0 | 257,470 | 2.6% | 15 May, 2026 |
| 5 | Craig H Jr Stevenson | Director | 257,332 | 0 | 257,332 | 2.6% | 10 Jun, 2026 |
| 6 | Jeffrey Pribor | Svp Cfo | 205,968 | 0 | 205,968 | 2.1% | 17 Jul, 2026 |
| 7 | Derek G. Solon | Senior Vice President | 104,138 | 0 | 104,138 | 1.0% | 13 May, 2026 |
| 8 | Timothy J Bernlohr | Director | 100,432 | 0 | 100,432 | 1.0% | 10 Jun, 2026 |
| 9 | Douglas D Wheat | Director | 66,856 | 0 | 66,856 | 0.7% | 17 Jun, 2024 |
| 10 | David I Greenberg | Director | 65,886 | 0 | 65,886 | 0.7% | 10 Jun, 2026 |
| 11 | Ian T Blackley | Director | 52,286 | 0 | 52,286 | 0.5% | 10 Jun, 2026 |
| 12 | Randee E Day | Director | 45,437 | 0 | 45,437 | 0.5% | 10 Jun, 2026 |
| 13 | Nadim Z Qureshi | Director | 44,899 | 0 | 44,899 | 0.5% | 15 Mar, 2024 |
| 14 | Adewale Oshodi | Vice President Controller | 32,211 | 0 | 32,211 | 0.3% | 16 Mar, 2026 |
| 15 | Alexandra Kate Blankenship | Director | 31,268 | 0 | 31,268 | 0.3% | 10 Jun, 2026 |
| 16 | Joseph Isaac Kronsberg | Director | 18,485 | 0 | 18,485 | 0.2% | 17 May, 2024 |
| 17 | Kristian Johansen | Director | 12,072 | 0 | 12,072 | 0.1% | 10 Jun, 2026 |
| 18 | Darron M. Anderson | Director | 6,957 | 0 | 6,957 | 0.1% | 10 Jun, 2026 |
| 19 | Debra Grillo | Treasurer | 1,763 | 0 | 1,763 | 0.0% | 07 Jul, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 17 Aug, 2026 | Lois K Zabrocky | President Ceo | Disposed S | 2,000 | $98.44 | $196.88K | 173,745 | Direct |
| 15 Jul, 2026 | Lois K Zabrocky | President Ceo | Disposed S | 2,000 | $87.59 | $175.18K | 175,745 | Direct |
| 15 Jul, 2026 | Jeffrey Pribor | Svp Cfo | Disposed S | 1,000 | $87.49 | $87.49K | 100,984 | Direct |
| 02 Jul, 2026 | Debra Grillo | Treasurer | Acquired J | 904 | — | — | 2,089 | Direct |
| 02 Jul, 2026 | Debra Grillo | Treasurer | Disposed F | 326 | — | — | 1,763 | Direct |
| 02 Jul, 2026 | Debra Grillo | Treasurer | Disposed D | 904 | — | — | 1,811 | Direct |
| 15 Jun, 2026 | Jeffrey Pribor | Svp Cfo | Disposed S | 1,000 | $81.68 | $81.68K | 101,984 | Direct |
| 15 Jun, 2026 | Lois K Zabrocky | President Ceo | Disposed S | 2,000 | $81.34 | $162.68K | 177,745 | Direct |
| 08 Jun, 2026 | Craig H Jr Stevenson | Director | Acquired J | 1,842 | $0.00 | $0 | 129,587 | Direct |
| 08 Jun, 2026 | James D Iii Small | Cao,Svp,Sec. General Counsel | Acquired A | 5,436 | — | — | 5,436 | Direct |
| 08 Jun, 2026 | Adewale Oshodi | Vice President Controller | Acquired A | 1,508 | — | — | 1,508 | Direct |
| 08 Jun, 2026 | Alexandra Kate Blankenship | Director | Acquired J | 1,842 | $0.00 | $0 | 12,055 | Direct |
| 08 Jun, 2026 | Ian T Blackley | Director | Acquired J | 2,886 | $0.00 | $0 | 27,586 | Direct |
| 08 Jun, 2026 | Randee E Day | Director | Acquired J | 1,842 | $0.00 | $0 | 20,277 | Direct |
| 08 Jun, 2026 | David I Greenberg | Director | Acquired J | 1,842 | $0.00 | $0 | 33,864 | Direct |
| 08 Jun, 2026 | Timothy J Bernlohr | Director | Acquired J | 1,842 | $0.00 | $0 | 51,137 | Direct |
| 08 Jun, 2026 | Lois K Zabrocky | President Ceo | Acquired A | 20,542 | — | — | 20,542 | Direct |
| 08 Jun, 2026 | Darron M. Anderson | Director | Acquired J | 1,842 | $0.00 | $0 | 6,957 | Direct |
| 08 Jun, 2026 | Derek G. Solon | Senior Vice President | Acquired A | 5,286 | — | — | 5,286 | Direct |
| 08 Jun, 2026 | Jeffrey Pribor | Svp Cfo | Acquired A | 8,156 | — | — | 8,156 | Direct |