Insider trading

Period: 120 months Stock: IOSP + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

136 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

136 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

136 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

136 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
136 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
136 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

136 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
3 Mar 2026
Jones David B. SVP, GC & CCO
Sold at will
$77.76K 1,028 at 75.64
6.5%
Not planned
27 Feb 2026
Cleminson Ian EVP & CFO
Sold at will
$182.21K 2,380 at 76.56
10.5%
Not planned
27 Feb 2026
LANDLESS DAVID Director
Sold at will
$45.47K 594 at 76.56
7.2%
Not planned
27 Feb 2026
PADFIELD Larry Director
Sold at will
$45.47K 594 at 76.56
5.9%
Not planned
27 Feb 2026
Sold at will
$45.47K 594 at 76.56
5.3%
Not planned
27 Feb 2026
Poccia Claudia Director
Sold at will
$9.11K 119 at 76.56
1.8%
Not planned
20 Feb 2026
PADFIELD Larry Director
Sold at will
$84.30K 1,030 at 81.84
10.8%
Not planned
20 Feb 2026
Sold at will
$84.30K 1,030 at 81.84
9.7%
Not planned
14 Nov 2025
Bought
$25.19K 340 at 74.09
6.2%
13 May 2025
Sold at will 2×
$40.42K 446 at 90.63
7.5%
Not planned
3 Mar 2025
Cleminson Ian EVP & CFO
Sold at will
$431.68K 4,275 at 100.98
21.2%
Not planned
24 Feb 2025
BARNES CORBIN SVP, Corporate Dev and IR
Sold at will
$61.63K 598 at 103.06
6.9%
Not planned
21 Feb 2025
BOON PHILIP JOHN Executive VP Business Ops
Sold at will
$387.79K 3,754 at 103.30
15.8%
Not planned
21 Feb 2025
Jones David B. SVP, GC & CCO
Sold at will
$319.30K 3,091 at 103.30
24.2%
Not planned
21 Feb 2025
BARNES CORBIN SVP, Corporate Dev and IR
Sold at will
$278.09K 2,692 at 103.30
25.1%
Not planned
21 Feb 2025
Sold at will
$67.35K 652 at 103.30
7.2%
Not planned
21 Feb 2025
PADFIELD Larry Director
Sold at will
$20.25K 196 at 103.30
2.6%
Not planned
22 Nov 2024
Poccia Claudia Director
Sold at will
$35.96K 300 at 119.88
7.2%
Not planned
18 Nov 2024
BARNES CORBIN SVP, Corporate Dev and IR
Sold at will
$36.08K 307 at 117.52
3.7%
Not planned
18 Nov 2024
GRIFFIN HARDY LOUIS III SVP, HUMAN RESOURCES
Sold at will
$18.92K 161 at 117.52
3.4%
Not planned
13 Nov 2024
Sold at will
$127.22K 1,035 at 122.92
10.3%
Not planned
26 Aug 2024
Cleminson Ian VP & CFO
Sold at will 3×
$389.90K 3,398 at 114.74
20.7%
Not planned
23 Aug 2024
Cleminson Ian VP & CFO
Sold at will
$749.99K 6,602 at 113.60
28.7%
Not planned
13 Aug 2024
Bought
$15.14K 143 at 105.84
3.1%
20 May 2024
GRIFFIN HARDY LOUIS III SVP, HUMAN RESOURCES
Sold at will
$68.13K 525 at 129.78
10.4%
Not planned
16 May 2024
Bought
$24.87K 189 at 131.57
4.3%
1 Mar 2024
Jones David B. SVP, GC & CCO
Sold at will
$314.48K 2,500 at 125.79
20.6%
Not planned
29 Feb 2024
Williams Patrick PRESIDENT & CEO
Sold at will
$491.25K 3,955 at 124.21
2.3%
Not planned
29 Feb 2024
Cleminson Ian VP & CFO
Sold at will
$115.51K 931 at 124.07
3.9%
Not planned
27 Feb 2024
Williams Patrick PRESIDENT & CEO
Sold at will 2×
$1.20M 9,667 at 124.47
5.5%
Not planned
26 Feb 2024
Williams Patrick PRESIDENT & CEO
Sold at will 3×
$1.21M 9,667 at 125.01
5.5%
Not planned
23 Feb 2024
Williams Patrick PRESIDENT & CEO
Sold at will 3×
$1.20M 9,667 at 124.37
5.3%
Not planned
22 Feb 2024
Cleminson Ian VP & CFO
Sold at will
$518.60K 4,190 at 123.77
16.6%
Not planned
22 Feb 2024
BOON PHILIP JOHN Executive VP Business Ops
Sold at will
$453.50K 3,715 at 122.07
16.7%
Not planned
22 Feb 2024
GRIFFIN HARDY LOUIS III SVP, HUMAN RESOURCES
Sold at will
$228.89K 1,875 at 122.07
27.3%
Not planned
22 Feb 2024
Sold at will
$73.37K 601 at 122.07
6.8%
Not planned
22 Feb 2024
Bought
$50.82K 410 at 123.96
12.8%
Largest buy in 3 yrs
13 Nov 2023
PADFIELD Larry Director
Sold at will
$99.21K 977 at 101.54
12.9%
Not planned
22 May 2023
Poccia Claudia Director
Sold at will 2×
$73.31K 739 at 99.20
55.2%
Sold half or more
10 May 2023
Bought
$49.83K 515 at 96.75
19.1%
17 Mar 2023
BARNES CORBIN SVP, Corporate Dev and IR
Bought
$39.90K 400 at 99.75
27.6%
+28% of stake
7 Mar 2023
BOON PHILIP JOHN Executive VP Business Ops
Sold, plan not stated 2×
$685.55K 6,491 at 105.62
25.7%
7 Mar 2023
BARNES CORBIN SVP, Corporate Dev and IR
Bought
$132.50K 1,250 at 106.00
635%
First buy on file
6 Mar 2023
Cleminson Ian VP & CFO
Sold, plan not stated 5×
$639.72K 6,079 at 105.23
22.2%
3 Mar 2023
Williams Patrick PRESIDENT & CEO
Sold, plan not stated 8×
$1.25M 11,439 at 109.18
7.6%
3 Mar 2023
Bought
$50.11K 450 at 111.35
75.8%
First buy on file
2 Mar 2023
Williams Patrick PRESIDENT & CEO
Sold, plan not stated 3×
$1.25M 11,440 at 108.93
7.1%
2 Mar 2023
Jones David B. SVP, GC & CCO
Bought
$50.02K 459 at 108.98
7.6%
1 Mar 2023
Williams Patrick PRESIDENT & CEO
Sold, plan not stated 3×
$1.00M 9,143 at 109.70
5.5%
28 Feb 2023
Williams Patrick PRESIDENT & CEO
Sold, plan not stated 3×
$1.01M 9,146 at 110.64
5.2%
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