4basebio Ownership

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

Recent Insider Transactions

AIM:4BB Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
02 Apr 25	BuyUK£28,920	Heikki Lanckriet	Individual	2,400	UK£12.05
28 Feb 25	BuyUK£12,891	Amy Walker	Individual	1,151	UK£11.20
28 Nov 24	BuyUK£157,800	Heikki Lanckriet	Individual	12,000	UK£13.15
15 Nov 24	BuyUK£1,232,250	Heikki Lanckriet	Individual	93,000	UK£13.25
15 Nov 24	SellUK£1,232,250	Heikki Lanckriet	Individual	93,000	UK£13.25

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 4BB?
Owner Type	Number of Shares	Ownership Percentage
VC/PE Firms	1,525,051	9.23%
Public Companies	2,229,083	13.5%
Individual Insiders	2,275,319	13.8%
Private Companies	4,213,987	25.5%
Institutions	6,284,655	38%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 20.9%.

Top Shareholders

Top 25 shareholders own 105.92% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
17.2%	Elevage Medical Technologies Holdings Llc	2,666,667	UK£26.4m	0%	no data
14.4%	2invest AG	2,229,083	UK£22.1m	0%	no data
12.7%	M&G Investment Management Limited	1,961,074	UK£19.4m	0%	0.05%
9.85%	Deutsche Balaton AG	1,525,051	UK£15.1m	11.1%	8.52%
8.73%	Sparta AG	1,351,718	UK£13.4m	0%	59.74%
8.73%	SPARTA Invest AG	1,351,718	UK£13.4m	0%	16.9%
7.22%	Heikki Lanckriet	1,117,688	UK£11.1m	0.22%	no data
5.12%	Beta Systems Software AG	792,742	UK£7.8m	1.78%	no data
4.82%	DELPHI Unternehmensberatung Aktiengesellschaft	746,200	UK£7.4m	0%	no data
3.5%	BNPP Asset Management Holding	541,705	UK£5.4m	51.1%	0.01%
3.47%	Franciscus Busschere	537,255	UK£5.3m	0%	no data
2.96%	David Roth	457,708	UK£4.5m	0%	no data
2.2%	Hargreaves Lansdown Asset Management Ltd.	340,953	UK£3.4m	-11.8%	0.01%
1.26%	Aberdeen Group Plc	195,128	UK£1.9m	5.43%	no data
0.84%	Aramea Asset Management AG	129,893	UK£1.3m	-2.58%	0.27%
0.8%	Bankinter SA, Asset Management Arm	123,993	UK£1.2m	-5.8%	0.43%
0.7%	Wilhelm Zours	107,764	UK£1.1m	0%	no data
0.28%	Amy Walker	44,016	UK£435.8k	0%	no data
0.27%	KBC Asset Management NV	41,226	UK£408.1k	-78.6%	no data
0.22%	Deutsche Asset & Wealth Management	33,356	UK£330.2k	-45.8%	no data
0.2%	Rathbones Investment Management Limited	30,270	UK£299.7k	0%	no data
0.14%	HBOS Investment Fund Managers Limited	20,921	UK£207.1k	-0.02%	no data
0.11%	Deutsche Bank, Private Banking and Investment Banking Investments	16,666	UK£165.0k	0%	no data
0.11%	Saxo Bank A/S, Asset Management Arm	16,270	UK£161.1k	7.96%	0.01%
0.093%	Societe Generale Group, Banking Investments	14,378	UK£142.3k	-9.68%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/07/17 21:24
End of Day Share Price	2025/07/17 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

4basebio PLC is covered by 3 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
Pierre Sylvain Rousseau	Barclays
Adam McCarter	Cavendish
Charles Weston	RBC Capital Markets