Innospec Inc. (IOSP) Insider Trading

Last 12 months

Insiders bought $25k and sold $574k on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. EVP & CFO Ian Cleminson sold $182k on Feb 27, 10% of their stake, outside a plan.

Net open-market

−$549k

1 buy · 8 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

1 / 6

executives and directors

Last open-market buy

Nov 2025

Nov 14, 2025

Get an email when IOSP's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Mar 3	David B. Jones SVP, GC & CCO	SoldNo plan	1,028	$75.64	$78k	6.5%	Form 4
Feb 27	Milton C Blackmore Director	SoldNo plan 2 parts	594	$76.55 average	$45k	5.3%	Form 4
Feb 27	Larry Padfield Director	SoldNo plan 2 parts	594	$76.55 average	$45k	5.9%	Form 4
Feb 27	Claudia Poccia Director	SoldNo plan 2 parts	119	$76.56 average	$9k	1.8%	Form 4
Feb 27	David Landless Director	SoldNo plan 2 parts	594	$76.55 average	$45k	7.2%	Form 4
Feb 27	Ian Cleminson EVP & CFO	SoldNo plan 2 parts	2,380	$76.55 average	$182k	10%	Form 4
Feb 20	Milton C Blackmore Director	SoldNo plan	1,030	$81.84	$84k	8.5%	Form 4
Feb 20	Larry Padfield Director	SoldNo plan	1,030	$81.84	$84k	9.3%	Form 4
Nov 14, 2025	Leslie J Parrette Director	Bought	340	$74.09	$25k	6.2%	Form 4
May 13, 2025	Leslie J Parrette Director	SoldNo plan 2 parts	446	$90.63 average	$40k	7.5%	Form 4
Mar 3, 2025	Ian Cleminson EVP & CFO	SoldNo plan	4,275	$100.98	$432k	21%	Form 4
Feb 24, 2025	Corbin Barnes SVP, Corporate Dev and IR	SoldNo plan	598	$103.06	$62k	6.9%	Form 4
Feb 21, 2025	Larry Padfield Director	SoldNo plan	196	$103.30	$20k	2.6%	Form 4
Feb 21, 2025	Philip John Boon Executive VP Business Ops	SoldNo plan	3,754	$103.30	$388k	16%	Form 4
Feb 21, 2025	Corbin Barnes SVP, Corporate Dev and IR	SoldNo plan	2,692	$103.30	$278k	25%	Form 4
Feb 21, 2025	David B. Jones SVP, GC & CCO	SoldNo plan	3,091	$103.30	$319k	24%	Form 4
Feb 21, 2025	Milton C Blackmore Director	SoldNo plan	652	$103.30	$67k	7.2%	Form 4
Nov 22, 2024	Claudia Poccia Director	SoldNo plan	300	$119.88	$36k	7.2%	Form 4
Nov 18, 2024	Hardy Louis Griffin III SVP, HUMAN RESOURCES	SoldNo plan	161	$117.52	$19k	3.4%	Form 4
Nov 18, 2024	Corbin Barnes SVP, Corporate Dev and IR	SoldNo plan	307	$117.52	$36k	3.7%	Form 4
Nov 13, 2024	Milton C Blackmore Director	SoldNo plan	1,035	$122.92	$127k	10%	Form 4

Mar 3No plan
David B. Jones
SVP, GC & CCO · sold 1,028 at $75.64
$78k
6.5% of stake
Feb 27No plan
Milton C Blackmore
Director · sold 594 at avg $76.55
$45k
5.3% of stake
Feb 27No plan
Larry Padfield
Director · sold 594 at avg $76.55
$45k
5.9% of stake
Feb 27No plan
Claudia Poccia
Director · sold 119 at avg $76.56
$9k
1.8% of stake
Feb 27No plan
David Landless
Director · sold 594 at avg $76.55
$45k
7.2% of stake
Feb 27No plan
Ian Cleminson
EVP & CFO · sold 2,380 at avg $76.55
$182k
10% of stake
Feb 20No plan
Milton C Blackmore
Director · sold 1,030 at $81.84
$84k
8.5% of stake
Feb 20No plan
Larry Padfield
Director · sold 1,030 at $81.84
$84k
9.3% of stake
Nov 14, 2025
Leslie J Parrette
Director · bought 340 at $74.09
$25k
6.2% of stake
May 13, 2025No plan
Leslie J Parrette
Director · sold 446 at avg $90.63
$40k
7.5% of stake
Mar 3, 2025No plan
Ian Cleminson
EVP & CFO · sold 4,275 at $100.98
$432k
21% of stake
Feb 24, 2025No plan
Corbin Barnes
SVP, Corporate Dev and IR · sold 598 at $103.06
$62k
6.9% of stake
Feb 21, 2025No plan
Larry Padfield
Director · sold 196 at $103.30
$20k
2.6% of stake
Feb 21, 2025No plan
Philip John Boon
Executive VP Business Ops · sold 3,754 at $103.30
$388k
16% of stake
Feb 21, 2025No plan
Corbin Barnes
SVP, Corporate Dev and IR · sold 2,692 at $103.30
$278k
25% of stake
Feb 21, 2025No plan
David B. Jones
SVP, GC & CCO · sold 3,091 at $103.30
$319k
24% of stake
Feb 21, 2025No plan
Milton C Blackmore
Director · sold 652 at $103.30
$67k
7.2% of stake
Nov 22, 2024No plan
Claudia Poccia
Director · sold 300 at $119.88
$36k
7.2% of stake
Nov 18, 2024No plan
Hardy Louis Griffin III
SVP, HUMAN RESOURCES · sold 161 at $117.52
$19k
3.4% of stake
Nov 18, 2024No plan
Corbin Barnes
SVP, Corporate Dev and IR · sold 307 at $117.52
$36k
3.7% of stake
Nov 13, 2024No plan
Milton C Blackmore
Director · sold 1,035 at $122.92
$127k
10% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch IOSP, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in IOSP's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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