Gulf Marine Services Ownership

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

Recent Insider Transactions

LSE:GMS Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Role	Shares	Max Price
17 Dec 24	BuyUK£2,052	Charbel El Khoury	Individual		13,455	UK£0.15

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 GMS?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	2,584,455	0.224%
Public Companies	7,577,111	0.658%
General Public	85,495,920	7.42%
Private Companies	412,189,356	35.8%
Institutions	644,319,170	55.9%

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

Top Shareholders

Top 25 shareholders own 80.72% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
22.7%	Mzi Holding	261,680,095	UK£51.3m	0%	no data
6.73%	Merrill Lynch & Co. Inc., Banking Investments	77,515,218	UK£15.2m	-6.01%	0.01%
6.1%	Hargreaves Lansdown Asset Management Ltd.	70,228,972	UK£13.8m	5.78%	0.04%
4.69%	Dubai World Corporation	54,066,463	UK£10.6m	0%	no data
4.63%	Seafox Operations B.V.	53,297,645	UK£10.4m	0%	no data
3.96%	UBS Asset Management AG	45,598,491	UK£8.9m	14.1%	no data
3.4%	Aberdeen Group Plc	39,176,469	UK£7.7m	3.85%	0.01%
3.37%	IG Group Holdings Plc, Asset Management Arm	38,868,919	UK£7.6m	-0.51%	0.68%
3.22%	Fiera Capital Corporation	37,139,948	UK£7.3m	0.15%	0.02%
2.98%	Castro Investments Ltd	34,378,680	UK£6.7m	0%	no data
2.34%	JP Morgan Asset Management	27,007,438	UK£5.3m	43.9%	no data
1.91%	Noster Capital, LLP	22,000,000	UK£4.3m	10%	97.96%
1.8%	Premier Fund Managers Ltd.	20,738,820	UK£4.1m	170%	0.07%
1.67%	Barclays Bank PLC, Wealth and Investment Management Division	19,246,993	UK£3.8m	5.47%	0.04%
1.59%	NCB Capital Company, Asset Management Arm	18,340,000	UK£3.6m	8.52%	no data
1.5%	EFG-Hermes Asset Management SAE	17,300,208	UK£3.4m	-46.2%	20.09%
1.4%	Goldman Sachs Group, Investment Banking and Securities Investments	16,142,398	UK£3.2m	26.8%	no data
1.11%	Integra Asset Management Limited	12,749,632	UK£2.5m	0%	100.0%
0.99%	Morgan Stanley, Investment Banking and Brokerage Investments	11,350,148	UK£2.2m	53%	no data
0.96%	Legal & General Investment Management Limited	11,034,926	UK£2.2m	57.3%	no data
0.8%	Abu Dhabi Islamic Bank PJSC, Asset Management Arm	9,247,458	UK£1.8m	0%	100.0%
0.78%	Barclays PLC Private Banking & Investment Banking Investment	8,963,845	UK£1.8m	-46.4%	no data
0.72%	HBOS Investment Fund Managers Limited	8,333,048	UK£1.6m	-25.6%	0.01%
0.68%	BNP Paribas, Private & Investment Banking Investments	7,823,604	UK£1.5m	0%	0.01%
0.68%	Grimpeur Holdings Limited	7,790,427	UK£1.5m	3.87%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/08/11 04:34
End of Day Share Price	2025/08/08 00:00
Earnings	2024/12/31
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Gulf Marine Services PLC is covered by 13 analysts. 2 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Daniel Slater	Arden Partners Plc.
Nour Sherif	Arqaam Capital Research Offshore S.A.L.
Michael Pickup	Barclays