OII's three largest insider shareholders as of September 29, 2026 are Roderick A. Larson (President And Ceo, 397.28K shares), Roderick A. Larson (President And Ceo, 251.43K shares), Steven A Webster (Director, 165.94K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Roderick A. Larson | President And Ceo | 0 | 397,279 | 397,279 | 20.1% | 19 May, 2026 |
| 2 | Steven A Webster | Director | 165,939 | 0 | 165,939 | 8.4% | 19 May, 2026 |
| 3 | Alan R Curtis | Svp And Cfo | 155,259 | 0 | 155,259 | 7.9% | 28 Aug, 2025 |
| 4 | M Kevin Mcevoy | Chief Executive Officer | 134,133 | 0 | 134,133 | 6.8% | 31 Jul, 2026 |
| 5 | David K Lawrence | Sr. V.P., Gen.Counsel And Sec. | 133,654 | 0 | 133,654 | 6.8% | 01 Mar, 2022 |
| 6 | Eric A Silva | Sr. Vp, Chief Trans Ofc | 104,277 | 0 | 104,277 | 5.3% | 01 Mar, 2022 |
| 7 | Jon Erik Reinhardsen | Director | 101,208 | 0 | 101,208 | 5.1% | 19 May, 2026 |
| 8 | William B Berry | Director | 101,208 | 0 | 101,208 | 5.1% | 19 May, 2026 |
| 9 | T Jay Collins | President, Ceo | 78,650 | 0 | 78,650 | 4.0% | 28 Feb, 2023 |
| 10 | Paul B Jr Murphy | Director | 68,916 | 0 | 68,916 | 3.5% | 10 Aug, 2026 |
| 11 | Shaun Roedel | Svp, Mfd. Prods. | 54,146 | 0 | 54,146 | 2.7% | 26 Feb, 2026 |
| 12 | Philip G Beierl | Svp, Aerospace And Def Tech. | 52,345 | 0 | 52,345 | 2.7% | 26 Feb, 2025 |
| 13 | Martin J Mcdonald | Svp, Subsea Robotics | 49,229 | 0 | 49,229 | 2.5% | 14 May, 2026 |
| 14 | Witland J Jr. Leblanc | Vp Cao | 44,359 | 0 | 44,359 | 2.2% | 28 Feb, 2023 |
| 15 | Benjamin Laura | Svp Chief Operating Officer | 40,805 | 0 | 40,805 | 2.1% | 26 Feb, 2026 |
| 16 | Kishore Sundararajan | Sr. V.P., Imds | 38,293 | 0 | 38,293 | 1.9% | 01 Mar, 2022 |
| 17 | Deanna L Goodwin | Director | 35,905 | 0 | 35,905 | 1.8% | 01 Jul, 2026 |
| 18 | Jennifer Fremont Simons | Svp, Clo And Secretary | 35,387 | 0 | 35,387 | 1.8% | 26 Feb, 2026 |
| 19 | Kavitha Velusamy | Director | 29,292 | 0 | 29,292 | 1.5% | 01 Mar, 2022 |
| 20 | Karen H Beachy | Director | 27,392 | 0 | 27,392 | 1.4% | 19 May, 2026 |
| 21 | Holly Kriendler | Svp, Chief H.R. Officer | 24,702 | 0 | 24,702 | 1.3% | 26 Feb, 2026 |
| 22 | Reema Poddar | Director | 23,006 | 0 | 23,006 | 1.2% | 19 May, 2026 |
| 23 | Earl Childress | Svp, Chief Commercial Ofc. | 22,876 | 0 | 22,876 | 1.2% | 31 Jul, 2026 |
| 24 | Christopher J Dyer | Svp, Opgroup | 14,702 | 0 | 14,702 | 0.7% | 31 Jul, 2026 |
| 25 | Leonardo P Granato | Svp, Imds | 14,248 | 0 | 14,248 | 0.7% | 26 Feb, 2026 |
| 26 | William R. Merz | Svp, Aerospace And Def. Tech. | 12,599 | 0 | 12,599 | 0.6% | 26 Feb, 2025 |
| 27 | Catherine E Dunn | Vp, Chief Accounting Officer | 10,738 | 0 | 10,738 | 0.5% | 26 Feb, 2026 |
| 28 | Roger W. Jenkins | Director | 4,576 | 0 | 4,576 | 0.2% | 19 May, 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 |
|---|---|---|---|---|---|---|---|---|
| 07 Aug, 2026 | Paul B Jr Murphy | Director | Disposed S | 10,000 | $48.37 | $483.69K | 68,916 | Direct |
| 30 Jul, 2026 | Earl Childress | Svp, Chief Commercial Ofc. | Disposed S | 12,701 | $46.71 | $593.31K | 22,876 | Direct |
| 30 Jul, 2026 | Christopher J Dyer | Svp, Opgroup | Disposed S | 1,200 | $47.65 | $57.18K | 14,702 | Direct |
| 30 Jul, 2026 | M Kevin Mcevoy | Director | Disposed S | 3,000 | $47.93 | $143.78K | 134,133 | Direct |
| 30 Jun, 2026 | Deanna L Goodwin | Director | Disposed S | 7,000 | $40.69 | $284.83K | 35,905 | Direct |
| 15 May, 2026 | Karen H Beachy | Director | Acquired A | 4,576 | $0.00 | $0 | 27,392 | Direct |
| 15 May, 2026 | Paul B Jr Murphy | Director | Acquired A | 4,576 | $0.00 | $0 | 78,916 | Direct |
| 15 May, 2026 | M Kevin Mcevoy | Director | Acquired A | 6,729 | $0.00 | $0 | 137,133 | Direct |
| 15 May, 2026 | Roger W. Jenkins | Director | Acquired A | 4,576 | $0.00 | $0 | 4,576 | Direct |
| 15 May, 2026 | William B Berry | Director | Acquired A | 4,576 | $0.00 | $0 | 101,208 | Direct |
| 15 May, 2026 | Steven A Webster | Director | Acquired A | 4,576 | $0.00 | $0 | 165,939 | Direct |
| 15 May, 2026 | Reema Poddar | Director | Acquired A | 4,576 | $0.00 | $0 | 23,006 | Direct |
| 15 May, 2026 | Jon Erik Reinhardsen | Director | Acquired A | 4,576 | $0.00 | $0 | 101,208 | Direct |
| 18 May, 2026 | Roderick A. Larson | President And Ceo | Disposed S | 5,000 | $38.27 | $191.35K | 397,279 | Indirect |
| 15 May, 2026 | Deanna L Goodwin | Director | Acquired A | 4,576 | $0.00 | $0 | 42,905 | Direct |
| 12 May, 2026 | Martin J Mcdonald | Svp, Subsea Robotics | Disposed S | 26,053 | $38.33 | $998.61K | 93,176 | Direct |
| 13 May, 2026 | Martin J Mcdonald | Svp, Subsea Robotics | Disposed S | 43,947 | $38.49 | $1.69Mn | 49,229 | Direct |
| 11 Mar, 2026 | M Kevin Mcevoy | Director | Disposed S | 25,678 | $35.27 | $905.66K | 130,404 | Direct |
| 24 Feb, 2026 | Jennifer Fremont Simons | Svp, Clo And Secretary | Disposed F | 6,673 | $37.22 | $248.37K | 45,671 | Direct |
| 24 Feb, 2026 | Shaun Roedel | Svp, Mfd. Prods. | Disposed F | 2,067 | $37.22 | $76.93K | 56,146 | Direct |