COST Insider Trading

Insider Ownership Percentage: 47.97%
Insider Buying (Last 12 Months): £46,700
Insider Selling (Last 12 Months): £875,619.06

Costain Group Insider Trading History Chart

This chart shows the insider buying and selling history at Costain Group by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Costain Group Share Price & Price History

Current Price: GBX 155.20
Price Change: Price Increase of +2.2 (1.44%)
As of 12/4/2025 12:53 PM ET

This chart shows the closing price history over time for COST up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Costain Group Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
8/27/2025Kate RockInsiderBuy15,000GBX 132£19,800
8/26/2025Amanda FisherInsiderBuy10,000GBX 131£13,100
8/20/2025Kate RockInsiderBuy10,000GBX 138£13,800
6/24/2025Alex VaughanInsiderSell241,639GBX 144£347,960.16
6/24/2025Alex VaughanInsiderSell214,285GBX 142£304,284.70
6/24/2025Helen WillisInsiderSell56,429GBX 144£81,257.76
6/24/2025Helen WillisInsiderSell100,082GBX 142£142,116.44
10/28/2024Helen WillisInsiderSell234,555GBX 107£250,973.85
4/8/2024Alex VaughanInsiderSell282,443GBX 78£220,305.54
9/6/2023Kate RockInsiderBuy50,000GBX 59£29,500
12/21/2022Kate RockInsiderBuy50,000GBX 38£19,000
See Full Table

SEC Filings (Institutional Ownership Changes) for Costain Group (LON:COST)

36.41% of Costain Group stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Costain Group logo
Costain helps to improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet thrive. We shape, create and deliver pioneering solutions that transform the performance of the infrastructure ecosystem across the UK’s energy, water, transportation and defence markets. We are organised around our customers anticipating and solving their challenges and helping to improve performance. By bringing together our unique mix of construction, consulting and digital experts we engineer and deliver sustainable, efficient and practical solutions. Our 3,500 people manage a workforce of around 16,000 people and collaborate with customers, partners, communities and wider industry to make infrastructure fit for a better future. Our ambition is to become a net zero business by 2035, while enhancing biodiversity and natural capital, and we have plans in place to deliver this. We are committed to procure responsibly and to be an inclusive and accessible business for all, enabling us to be our best while focusing on the outcomes that we deliver for people and planet.
Read More on Costain Group

Today's Range

Now: GBX 155.20
Low: 147.40
High: 155.40

50 Day Range

MA: GBX 148.30
Low: 131
High: 156

52 Week Range

Now: GBX 155.20
Low: 85.40
High: 172.40

Volume

440,060 shs

Average Volume

1,433,619 shs

Market Capitalization

£413.94 million

P/E Ratio

13.50

Dividend Yield

1.95%

Beta

2.64

Who are the company insiders with the largest holdings of Costain Group?

Costain Group's top insider investors include:
  1. Alex Vaughan (Insider)
  2. Amanda Fisher (Insider)
  3. Helen Willis (Insider)
  4. Kate Rock (Insider)
Learn More about top insider investors at Costain Group.