Innospec's top three insider shareholders as of September 22, 2026 are Patrick Williams (President Ceo, 231.53K shares), Patrick Williams (President Ceo, 166.51K shares), Ian Malcolm Mcrobbie (Senior Vp Rt, 36.68K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Patrick Williams | President Ceo | 398,048 | 0 | 398,048 | 67.8% | 03 Mar, 2026 |
| 2 | Ian Malcolm Mcrobbie | Senior Vp Rt | 36,679 | 0 | 36,679 | 6.2% | 01 Mar, 2023 |
| 3 | David B. Jones | Svp, Gc Cco | 21,227 | 0 | 21,227 | 3.6% | 03 Mar, 2026 |
| 4 | Ian Cleminson | Evp Cfo | 20,357 | 0 | 20,357 | 3.5% | 06 Mar, 2026 |
| 5 | Philip John Boon | Executive Vp Business Ops | 20,079 | 0 | 20,079 | 3.4% | 24 Feb, 2025 |
| 6 | Corbin Barnes | Svp, Corporate Dev And Ir | 14,927 | 0 | 14,927 | 2.5% | 03 Mar, 2026 |
| 7 | Robert I Paller | Director | 14,343 | 0 | 14,343 | 2.4% | 28 Feb, 2024 |
| 8 | Leslie J Parrette | Director | 10,586 | 0 | 10,586 | 1.8% | 24 Feb, 2026 |
| 9 | Milton C Blackmore | Director | 10,530 | 0 | 10,530 | 1.8% | 06 Mar, 2026 |
| 10 | Hardy Louis Iii Griffin | Svp, Human Resources | 10,161 | 0 | 10,161 | 1.7% | 03 Mar, 2026 |
| 11 | Larry Padfield | Director | 9,453 | 0 | 9,453 | 1.6% | 06 Mar, 2026 |
| 12 | David Landless | Director | 7,632 | 0 | 7,632 | 1.3% | 06 Mar, 2026 |
| 13 | Claudia Poccia | Director | 6,508 | 0 | 6,508 | 1.1% | 06 Mar, 2026 |
| 14 | Elizabeth K Arnold | Director | 6,376 | 0 | 6,376 | 1.1% | 25 Feb, 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 |
|---|---|---|---|---|---|---|---|---|
| 27 Feb, 2026 | Milton C Blackmore | Director | Disposed S | 287 | $76.30 | $21.90K | 10,837 | Direct |
| 27 Feb, 2026 | Ian Cleminson | Evp Cfo | Disposed S | 1,149 | $76.30 | $87.67K | 21,588 | Direct |
| 27 Feb, 2026 | Claudia Poccia | Director | Disposed S | 57 | $76.30 | $4.35K | 6,570 | Direct |
| 27 Feb, 2026 | David Landless | Director | Disposed S | 287 | $76.30 | $21.90K | 7,939 | Direct |
| 27 Feb, 2026 | Larry Padfield | Director | Disposed S | 287 | $76.30 | $21.90K | 9,760 | Direct |
| 27 Feb, 2026 | David Landless | Director | Disposed S | 307 | $76.79 | $23.57K | 7,632 | Direct |
| 27 Feb, 2026 | Ian Cleminson | Evp Cfo | Disposed S | 1,231 | $76.79 | $94.53K | 20,357 | Direct |
| 27 Feb, 2026 | Larry Padfield | Director | Disposed S | 307 | $76.79 | $23.57K | 9,453 | Direct |
| 27 Feb, 2026 | Milton C Blackmore | Director | Disposed S | 307 | $76.79 | $23.57K | 10,530 | Direct |
| 27 Feb, 2026 | Claudia Poccia | Director | Disposed S | 62 | $76.79 | $4.76K | 6,508 | Direct |
| 27 Feb, 2026 | Patrick Williams | President Ceo | Disposed F | 7,966 | $78.34 | $624.06K | 231,535 | Direct |
| 27 Feb, 2026 | David B. Jones | Svp, Gc Cco | Disposed F | 875 | $78.34 | $68.55K | 15,721 | Direct |
| 27 Feb, 2026 | Claudia Poccia | Director | Disposed S | 119 | $76.56 | $9.11K | 6,508 | Direct |
| 27 Feb, 2026 | Larry Padfield | Director | Disposed S | 594 | $76.56 | $45.47K | 9,453 | Direct |
| 27 Feb, 2026 | Ian Cleminson | Evp Cfo | Disposed S | 2,380 | $76.56 | $182.21K | 20,357 | Direct |
| 27 Feb, 2026 | Hardy Louis Iii Griffin | Svp, Human Resources | Disposed F | 401 | $78.34 | $31.41K | 10,161 | Direct |
| 27 Feb, 2026 | Corbin Barnes | Svp, Corporate Dev And Ir | Disposed F | 166 | $78.34 | $13.00K | 13,080 | Direct |
| 27 Feb, 2026 | Milton C Blackmore | Director | Disposed S | 594 | $76.56 | $45.47K | 10,530 | Direct |
| 27 Feb, 2026 | David Landless | Director | Disposed S | 594 | $76.56 | $45.47K | 7,632 | Direct |
| 03 Mar, 2026 | David B. Jones | Svp, Gc Cco | Disposed S | 1,028 | $75.64 | $77.76K | 14,693 | Direct |