As of September 29, 2026, the three largest insider holders of IART are St Partnership, L.P. Tru (TenPercentOwner, 8.82Mn shares), Stuart Essig (Exec. Chairman Of The Board, 1.15Mn shares), Stuart Essig (Director, 200.00K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | St Partnership, L.P. Tru | TenPercentOwner | 8,815,930 | 0 | 8,815,930 | 80.3% | 19 Nov, 2021 |
| 2 | Stuart Essig | Exec. Chairman Of The Board | 1,152,236 | 0 | 1,152,236 | 10.5% | 18 Aug, 2025 |
| 3 | Barbara B Hill | Director | 151,191 | 0 | 151,191 | 1.4% | 11 May, 2026 |
| 4 | Christian S Schade | Director | 90,034 | 0 | 90,034 | 0.8% | 13 May, 2025 |
| 5 | Keith Bradley | Director | 88,254 | 0 | 88,254 | 0.8% | 11 May, 2026 |
| 6 | Robert T. Jr. Davis | Evp President, Tt | 66,387 | 0 | 66,387 | 0.6% | 12 Mar, 2026 |
| 7 | Michael J. Mcbreen | Evp President, Css | 60,743 | 0 | 60,743 | 0.6% | 12 Mar, 2026 |
| 8 | Carrie L Anderson | Executive Vice President Cfo | 57,811 | 0 | 57,811 | 0.5% | 05 Jul, 2022 |
| 9 | Eric Schwartz | Evp, Chief Legal Officer Sec | 56,020 | 0 | 56,020 | 0.5% | 13 Mar, 2025 |
| 10 | Donald E Jr Morel | Director | 55,753 | 0 | 55,753 | 0.5% | 17 May, 2022 |
| 11 | Raymond G. Murphy | Director | 54,007 | 0 | 54,007 | 0.5% | 13 May, 2024 |
| 12 | Lea Daniels Knight | Evp Chief Financial Officer | 45,263 | 0 | 45,263 | 0.4% | 06 Jul, 2026 |
| 13 | Shaundra Clay | Director | 41,515 | 0 | 41,515 | 0.4% | 13 May, 2025 |
| 14 | Jeffrey A Graves | Director | 41,086 | 0 | 41,086 | 0.4% | 06 Nov, 2025 |
| 15 | Renee Wonlai Lo | Director | 35,743 | 0 | 35,743 | 0.3% | 13 May, 2025 |
| 16 | Harvinder Singh | Evp President, International | 35,422 | 0 | 35,422 | 0.3% | 12 Mar, 2026 |
| 17 | Glenn Coleman | Executive Vice President Coo | 34,622 | 0 | 34,622 | 0.3% | 05 Jul, 2022 |
| 18 | Jeffrey Mosebrook | Svp, Fin Princ Acct Officer | 34,516 | 0 | 34,516 | 0.3% | 06 Jul, 2026 |
| 19 | Witte Jan De | President Ceo | 23,902 | 0 | 23,902 | 0.2% | 04 Nov, 2024 |
| 20 | Chantal Veillon-Berteloot | Evp Chro | 20,772 | 0 | 20,772 | 0.2% | 04 Sep, 2026 |
| 21 | Lisa Evoli | Evp Chro | 18,446 | 0 | 18,446 | 0.2% | 14 Mar, 2023 |
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 |
|---|---|---|---|---|---|---|---|---|
| 01 Sep, 2026 | Chantal Veillon-Berteloot | Evp Chro | Disposed F | 1,455 | $16.62 | $24.18K | 20,772 | Direct |
| 01 Jul, 2026 | Robert T. Jr. Davis | Evp President, Trdt | Acquired A | 11,180 | $0.00 | $0 | 54,530 | Direct |
| 01 Jul, 2026 | Jeffrey Mosebrook | Svp, Fin Princ Acct Officer | Disposed F | 937 | $17.89 | $16.76K | 34,516 | Direct |
| 03 Jul, 2026 | Lea Daniels Knight | Evp Chief Financial Officer | Disposed F | 5,226 | $18.05 | $94.33K | 45,263 | Direct |
| 01 Jul, 2026 | Harvinder Singh | Evp President, Ss | Acquired A | 5,590 | $0.00 | $0 | 68,883 | Direct |
| 01 Jun, 2026 | Stuart Essig | President And Ceo | Acquired A | 705,468 | $0.00 | $0 | 705,468 | Direct |
| 01 Jun, 2026 | Stuart Essig | President And Ceo | Acquired A | 365,297 | $0.00 | $0 | 365,297 | Direct |
| 01 Jun, 2026 | Michael J. Mcbreen | Evp Chief Commercial Officer | Acquired A | 60,372 | $0.00 | $0 | 60,372 | Direct |
| 01 Jun, 2026 | Michael J. Mcbreen | Evp Chief Commercial Officer | Acquired A | 31,909 | $0.00 | $0 | 124,017 | Direct |
| 07 May, 2026 | Barbara B Hill | Director | Acquired A | 6,638 | $0.00 | $0 | 133,491 | Direct |
| 07 May, 2026 | Shaundra Clay | Director | Acquired A | 17,700 | $0.00 | $0 | 17,700 | Direct |
| 07 May, 2026 | Christian S Schade | Director | Acquired A | 17,700 | $0.00 | $0 | 17,700 | Direct |
| 09 May, 2026 | Keith Bradley | Director | Disposed F | 882 | $13.92 | $12.28K | 88,254 | Direct |
| 07 May, 2026 | Jeffrey A Graves | Director | Acquired A | 17,700 | $0.00 | $0 | 17,700 | Direct |
| 07 May, 2026 | Renee Wonlai Lo | Director | Acquired A | 17,700 | $0.00 | $0 | 17,700 | Direct |
| 07 May, 2026 | Barbara B Hill | Director | Acquired A | 17,700 | $0.00 | $0 | 151,191 | Direct |
| 07 May, 2026 | Keith Bradley | Director | Acquired A | 17,700 | $0.00 | $0 | 17,700 | Direct |
| 10 Mar, 2026 | Jeffrey Mosebrook | Svp, Fin Princ Acct Officer | Disposed F | 341 | $9.55 | $3.26K | 36,259 | Direct |
| 10 Mar, 2026 | Michael J. Mcbreen | Evp President, Css | Disposed F | 2,354 | $9.55 | $22.48K | 67,990 | Direct |
| 10 Mar, 2026 | Harvinder Singh | Evp President, International | Acquired M | 1,216 | $0.00 | $0 | 23,152 | Direct |