California Water Service Group Ownership

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

Recent Insider Transactions

NYSE:CWT Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
21 May 26	SellUS$160,214	Thomas Krummel	Individual	3,700	US$43.30
20 Mar 26	SellUS$171,248	Michael Mares	Individual	3,892	US$44.00
20 Mar 26	SellUS$32,945	Michael Luu	Individual	739.85	US$44.53
23 Dec 25	SellUS$40,046	Michelle Mortensen	Individual	924	US$43.34
10 Dec 25	BuyUS$23,540	James Lynch	Individual	550	US$42.80
12 Jun 25	SellUS$55,812	Lester Snow	Individual	1,200	US$46.51

Insider Trading Volume

Insider Buying: CWT insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of CWT?
Owner Type	Number of Shares	Ownership Percentage
State or Government	12,535	0.0209%
Individual Insiders	485,437	0.811%
General Public	7,019,351	11.7%
Institutions	52,335,939	87.4%

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

Top Shareholders

Top 25 shareholders own 71.77% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
17.2%	BlackRock, Inc.	10,308,530	US$445.4m	-3.49%	0.01%
12.5%	The Vanguard Group, Inc.	7,467,402	US$322.7m	1.65%	no data
5.85%	T. Rowe Price Group, Inc.	3,501,707	US$151.3m	2.64%	0.01%
5.8%	Amundi Asset Management SAS	3,470,997	US$150.0m	26.7%	0.02%
5.18%	State Street Global Advisors, Inc.	3,102,659	US$134.1m	2.4%	no data
2.68%	Nuance Investments, LLC	1,603,748	US$69.3m	-12.1%	8.84%
2.47%	Geode Capital Management, LLC	1,475,405	US$63.8m	3.83%	no data
2.31%	FMR LLC	1,381,633	US$59.7m	-22.9%	no data
2.26%	First Trust Advisors LP	1,354,165	US$58.5m	-1.01%	0.03%
1.94%	Dimensional Fund Advisors LP	1,158,359	US$50.1m	0.38%	0.01%
1.54%	Invesco Capital Management LLC	921,995	US$39.8m	5.03%	0.01%
1.3%	Legal & General Investment Management Limited	777,542	US$33.6m	1.79%	0.01%
1.22%	Charles Schwab Investment Management, Inc.	728,468	US$31.5m	2.5%	no data
1.13%	Morgan Stanley	677,786	US$29.3m	93.9%	no data
1.08%	CBRE Investment Management Listed Real Assets LLC	647,515	US$28.0m	-10.4%	0.31%
1.06%	Northern Trust Global Investments	637,303	US$27.5m	4.21%	no data
0.96%	KBC Asset Management NV	577,247	US$24.9m	29.3%	0.03%
0.84%	BNY Asset Management	504,522	US$21.8m	0.26%	no data
0.71%	Eaton Vance Management	422,980	US$18.3m	5.86%	no data
0.7%	UBS Asset Management AG	420,559	US$18.2m	-6.32%	no data
0.69%	Triodos Investment Management B.V.	414,000	US$17.9m	0%	0.71%
0.69%	Beck Bode, LLC	411,714	US$17.8m	6%	2.81%
0.62%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	372,710	US$16.1m	-12%	no data
0.54%	Victory Capital Management Inc.	321,315	US$13.9m	1.85%	0.01%
0.49%	Raymond James Financial, Inc.	294,518	US$12.7m	4.48%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/05/22 08:44
End of Day Share Price	2026/05/22 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

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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

California Water Service Group is covered by 8 analysts. 3 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
Davis Sunderland	Baird
Daniel Ford	Barclays
Ross Fowler	BofA Global Research