Innospec Inc. (IOSP) Insider Ownership

Historic Insider Ownership Trends

Through the 90-day period concluding January 13, 2026, Innospec's top three insider stakeholders include President & Ceo Patrick Williams (199.69K shares), Senior Vp R&T Ian Malcolm Mcrobbie (36.68K shares), Vp And Strat Plan & Regulatory Brian Watt (25.12K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Patrick Williams President & Ceo 199,689 04 Mar, 2025
Ian Malcolm Mcrobbie Senior Vp R&T 36,679 01 Mar, 2023
Brian Watt Vp And Strat Plan & Regulatory 25,124 13 May, 2021
Philip John Boon Executive Vp Business Ops 20,079 24 Feb, 2025
Ian Cleminson Evp & Cfo 15,858 04 Mar, 2025
Catherine Hessner Senior Vp Human Resources 15,194 13 May, 2021
Robert I Paller 14,343 28 Feb, 2024
David B. Jones Svp And Gc & Cco 11,700 27 Feb, 2025
Milton C Blackmore 9,585 27 Feb, 2025
Corbin Barnes Svp And Corporate Dev And Ir 8,998 15 May, 2025
Larry Padfield 8,508 27 Feb, 2025
Hardy Louis Iii Griffin Svp And Human Resources 6,742 15 May, 2025
David Landless 6,687 27 Feb, 2025
Leslie J Parrette 5,837 17 Nov, 2025
Claudia Poccia 5,088 27 Feb, 2025
Elizabeth K Arnold 4,837 27 Feb, 2025

* 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
14 Nov, 2025 Leslie J Parrette Common Stock A 340 $74.09 5,837 D P
13 May, 2025 Leslie J Parrette Common Stock D 270 $90.60 5,673 D S
13 May, 2025 Leslie J Parrette Common Stock D 176 $90.68 5,497 D S
13 May, 2025 Corbin Barnes Common Stock D 740 $91.53 8,998 D F
13 May, 2025 Corbin Barnes - - 8,998 D
13 May, 2025 Hardy Louis Iii Griffin Common Stock D 600 $91.53 6,742 D F
03 Mar, 2025 Patrick Williams Common Stock D 12,723 $103.66 199,689 D F
03 Mar, 2025 Ian Cleminson Common Stock D 4,275 $100.98 15,858 D S
24 Feb, 2025 Leslie J Parrette Common Stock A 1,209 $0.00 5,943 D A
24 Feb, 2025 Patrick Williams Common Stock A 14,743 $0.00 212,412 D A
24 Feb, 2025 Ian Cleminson Common Stock A 2,862 $0.00 20,133 D A
24 Feb, 2025 Milton C Blackmore Common Stock A 1,209 $0.00 9,585 D A
24 Feb, 2025 Larry Padfield Common Stock A 1,209 $0.00 8,508 D A
24 Feb, 2025 David Landless Common Stock A 1,209 $0.00 6,687 D A
24 Feb, 2025 David B. Jones Common Stock A 2,036 $0.00 11,700 D A
24 Feb, 2025 Claudia Poccia Common Stock A 1,209 $0.00 5,088 D A
24 Feb, 2025 Claudia Poccia - - 5,088 D
24 Feb, 2025 Elizabeth K Arnold Common Stock A 1,209 $0.00 4,837 D A
24 Feb, 2025 Corbin Barnes Common Stock A 1,687 $0.00 9,738 D A
24 Feb, 2025 Corbin Barnes Common Stock D 598 $103.06 8,051 D S