EST Tools Ownership

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

Recent Insider Transactions

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 300488?
Owner Type	Number of Shares	Ownership Percentage
Institutions	2,832,424	1.5%
Individual Insiders	45,689,333	24.3%
General Public	57,797,612	30.7%
Private Companies	81,901,454	43.5%

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

Top Shareholders

Top 25 shareholders own 69.29% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
43.5%	EST Holdings Co., Ltd.	81,901,454	CN¥2.4b	0%	no data
7.67%	Er Rong Chen	14,441,872	CN¥415.2m	0%	no data
7.67%	Zi Yan Chen	14,441,872	CN¥415.2m	0%	no data
5.12%	Zi Yi Chen	9,627,915	CN¥276.8m	0%	no data
3.75%	Guo Ji Zheng	7,066,186	CN¥203.2m	-5.09%	no data
0.5%	China Southern Asset Management Co., Ltd.	938,711	CN¥27.0m	25.4%	0.01%
0.48%	Hong Kong Exchanges and Clearing Limited	911,251	CN¥26.2m	0%	no data
0.29%	National Council for Social Security Fund	553,962	CN¥15.9m	0%	no data
0.064%	HFT Investment Management Co. Ltd. (Group)	121,300	CN¥3.5m	0%	0.01%
0.064%	Guotai Asset Management Company Limited	120,500	CN¥3.5m	0%	no data
0.038%	Bosera Asset Management Co., Ltd.	71,800	CN¥2.1m	0%	no data
0.017%	Yao Juan Zhou	31,894	CN¥916.7k	0%	no data
0.016%	Hai Feng Yao	29,494	CN¥848.0k	0%	no data
0.014%	Qin Song He	26,994	CN¥776.0k	0%	no data
0.013%	Yinhua Fund Management Co., Ltd.	23,800	CN¥684.0k	0%	no data
0.012%	Ji Liang Zheng	23,106	CN¥664.5k	0%	no data
0.012%	China Asset Management Co. Ltd.	22,800	CN¥655.3k	0%	no data
0.012%	Huatai-PineBridge Fund Management Co., Ltd.	22,600	CN¥649.9k	0%	no data
0.0072%	Western Leadbank Fund Management Co., Ltd.	13,500	CN¥388.0k	0%	no data
0.0066%	Hongde Fund Management Co., Ltd.	12,500	CN¥359.3k	0%	no data
0.0038%	Shanghai Guotai Junan Securities Asset Management Co., Ltd.	7,100	CN¥204.0k	0%	no data
0.0034%	Minsheng Royal Fund Management Co., Ltd.	6,400	CN¥184.0k	0%	no data
0.002%	First State Cinda Fund Management Company Limited	3,700	CN¥106.6k	0%	no data
0.00058%	E Fund Management Co., Ltd.	1,100	CN¥31.4k	0%	no data
0.00048%	Invesco Great Wall Fund Management Co. Ltd	900	CN¥26.0k	0%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/07/28 20:43
End of Day Share Price	2026/07/28 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

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

EST Tools Co., Ltd is covered by 1 analysts. 0 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
Wenchao Jiao	Ping An Securities Co. Ltd.