Costain Group Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

LSE:COST Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Role	Shares	Max Price
06 Sep 23	BuyUK£29,600	Kate Harriet Rock	Individual		50,000	UK£0.59

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of COST?
Owner Type	Number of Shares	Ownership Percentage
Public Companies	418,038	0.15%
Individual Insiders	695,737	0.25%
Employee Share Scheme	3,872,850	1.39%
VC/PE Firms	14,466,812	5.2%
Private Companies	42,025,100	15.1%
General Public	58,790,489	21.1%
Institutions	158,197,003	56.8%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 68.67% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
15%	ASGC Construction LLC	41,666,666	UK£37.3m	0%	no data
7.91%	Ennismore Fund Management Limited	22,022,829	UK£19.7m	0%	5.42%
7.42%	J O Hambro Capital Management Limited	20,660,466	UK£18.5m	1.7%	0.16%
5.2%	Gresham House Asset Management Limited	14,466,812	UK£12.9m	-6.47%	0.89%
4.19%	Amundi Asset Management SAS	11,661,744	UK£10.4m	-29.4%	no data
3.63%	Kleinwort Benson Private Bank Limited, Asset Management Arm	10,105,323	UK£9.0m	0%	3.1%
3.24%	Fidelity International Ltd	9,016,386	UK£8.1m	-13.8%	no data
2.55%	HBOS Investment Fund Managers Limited	7,093,677	UK£6.3m	2.28%	0.06%
2.1%	A J Bell Holdings Limited, Asset Management Arm	5,858,298	UK£5.2m	13.4%	0.06%
1.9%	Barclays Bank PLC, Wealth and Investment Management Division	5,297,618	UK£4.7m	-0.5%	0.06%
1.73%	Artemis Investment Management LLP	4,808,419	UK£4.3m	-30.7%	0.02%
1.51%	BlackRock, Inc.	4,202,406	UK£3.8m	31.2%	no data
1.39%	Costain Group, Employee Trust	3,872,850	UK£3.5m	-1.73%	no data
1.36%	Fleming Family & Partners Ltd.	3,776,479	UK£3.4m	-0.92%	0.17%
1.32%	Legal & General Investment Management Limited	3,673,199	UK£3.3m	-0.89%	no data
1.23%	Charles Stanley & Co. Ltd, Asset Management Arm	3,427,406	UK£3.1m	3.1%	0.03%
1.07%	Dimensional Fund Advisors LP	2,991,150	UK£2.7m	38.4%	no data
0.99%	HSBC Global Asset Management (UK) Limited	2,745,616	UK£2.5m	-3.85%	no data
0.95%	Ninety One UK Limited	2,656,115	UK£2.4m	0%	no data
0.89%	Acadian Asset Management LLC	2,478,569	UK£2.2m	74.1%	0.01%
0.76%	F Van Lanschot Bankiers NV, Asset Management Arm	2,105,362	UK£1.9m	295%	0.09%
0.71%	JPMorgan Chase & Co, Brokerage and Securities Investments	1,981,974	UK£1.8m	0%	no data
0.66%	UBS Asset Management AG	1,824,997	UK£1.6m	113%	no data
0.52%	The Vanguard Group, Inc.	1,457,018	UK£1.3m	52.5%	no data
0.5%	IG Group Holdings Plc, Asset Management Arm	1,380,017	UK£1.2m	-6.48%	0.12%