California Water Service Group
US ˙ NYSE ˙ US1307881029

SecurityCWT / California Water Service Group
InstitutionPinnacle Bancorp, Inc.
Latest Disclosed Ownership670 shares
Latest Disclosed Value $ 30,378
Pinnacle Bancorp, Inc. ownership in CWT / California Water Service Group

On April 22, 2026 - Pinnacle Bancorp, Inc. filed a 13F-HR form disclosing ownership of 670 shares of California Water Service Group (US:CWT) valued at $30,378 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 670 shares of California Water Service Group. This represents a change in shares of 0.00% during the quarter. The current value of the position is $29,982 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-22 2026-03-31 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 30 3.45 0.0090
2026-01-22 2025-12-31 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 29 -3.33 0.0085
2025-10-24 2025-09-30 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 31 0.00 0.0091
2025-07-11 2025-06-30 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 30 -6.25 0.0094
2025-04-23 2025-03-31 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 32 6.67 0.0106
2025-01-14 2024-12-31 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 30 -16.67 0.0099
2024-10-09 2024-09-30 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 36 12.50 0.0097
2024-07-15 2024-06-30 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 32 3.23 0.0096
2024-04-16 2024-03-31 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 31 -8.82 0.0092
2024-01-25 2023-12-31 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 35 9.68 0.0114
2023-10-18 2023-09-30 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 32 -8.82 0.0113
2023-07-14 2023-06-30 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 35 -10.53 0.0118
2023-04-14 2023-03-31 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 39 0.0143
2023-01-24 2022-12-31 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 0 -100.00 0.0158
2022-10-25 2022-09-30 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 35 -5.41 0.0151
2022-07-12 2022-06-30 13F California Wtr Svc Group Com COM 130788102 670 0 0.00 37 -7.50 0.0152
2022-04-14 2022-03-31 13F California Wtr Svc Group Com COM 130788102 670 -130 -16.25 40 -29.82 0.0139
2022-01-19 2021-12-31 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 57 21.28 0.0201
2021-10-12 2021-09-30 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 47 6.82 0.0188
2021-07-15 2021-06-30 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 44 -2.22 0.0201
2021-04-26 2021-03-31 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 45 4.65 0.0218
2021-01-13 2020-12-31 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 43 22.86 0.0265
2020-10-13 2020-09-30 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 35 -7.89 0.0247
2020-07-07 2020-06-30 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 38 -5.00 0.0283
2020-04-09 2020-03-31 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 40 -2.44 0.0342
2020-01-10 2019-12-31 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 41 -2.38 0.0284
2019-10-08 2019-09-30 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 42 2.44 0.0240
2019-07-08 2019-06-30 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 41 -4.65 0.0230
2019-04-05 2019-03-31 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 43 13.16 0.0249
2019-03-20 2018-12-31 13F California Wtr Svc Group Com COM 130788102 800 0 0.00 38 31.03 0.0234
2017-04-17 2017-03-31 13F California Wtr Svc Group Com COM 130788102 800 800 29 0.0205
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.