Ownership & Insider Lab

Look up a company to review current SEC-traceable insider positions, exact reporting-owner relationships across other published companies, a dated chronology of the published ownership evidence, and recent supported insider transactions where transaction history is separately available.
Coverage follows the existing reviewed company dataset and fails closed when a ticker is not currently supported.

CALIFORNIA WATER SERVICE GROUP (CWT)

NYSE · SEC CIK 0001035201

$7.9MCovered current disclosed holdings
2Covered reporting owners
2Covered direct positions
2Source ownership filings

This is the supported SEC-traceable subset, not total insider ownership or personal wealth. Values reflect the current disclosed positions Grizzly Bulls can resolve and value. Latest source filing: Sep 8, 2026 · values through Sep 25, 2026.

Covered reporting owners

Filter the reporting-owner snapshot by holder, role, or security. Position values are shown only where the current reviewed data supports them.

2 shown
HolderRolePositionCurrent valueLatest filing
Martin A. KropelnickiResearch disclosed relationshipsChairman President & CEO147,286.546000000002 sharesCommon Stock, $0.01 par value per share$6.8MSep 8, 2026
Michael B. LuuResearch disclosed relationshipsSVP Corp Svce & Chief Risk Of23,743.546999999999 sharesCommon Stock, $0.01 par value per share$1.1MSep 8, 2026

Reporting-owner research graph

These relationships are joined only when the same single SEC reporting-owner CIK appears unambiguously across the publication-authorized company ownership universe. Name similarity is never used to create a relationship.

This graph is bounded to the company ownership relationships currently published by Grizzly Bulls. It is not a complete employment, board, ownership, portfolio, or wealth history, and a missing relationship does not establish that none exists.

SEC transaction evidence ledger

Each row preserves the reviewed SEC transaction evidence, including the effective-date basis, amendment state, reported post-transaction position when present, and a separately published current covered owner/security position when one can be matched uniquely. Reported price is shown when present. The lab does not calculate gross proceeds, reconstruct balances between filings, or treat historical transactions as current wealth.

12 shown
Effective dateHolderActionSecurityUnitsReported priceReported position after transactionCurrent covered positionFiling
Sep 5, 2026Transaction dateMichael B. LuuResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share68 shares$50.0323,743.547 shares23,743.546999999999 sharesOwner coverage latest filing Sep 8, 20264Filed Sep 8, 2026
Sep 5, 2026Transaction dateMartin A. KropelnickiResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share493 shares$50.03147,286.546 shares147,286.546000000002 sharesOwner coverage latest filing Sep 8, 20264Filed Sep 8, 2026
Sep 4, 2026Transaction dateMichael B. LuuResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share70 shares$50.0323,811.547 shares23,743.546999999999 sharesOwner coverage latest filing Sep 8, 20264Filed Sep 8, 2026
Sep 4, 2026Transaction dateMartin A. KropelnickiResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share505 shares$50.03147,779.546 shares147,286.546000000002 sharesOwner coverage latest filing Sep 8, 20264Filed Sep 8, 2026
Jun 6, 2015Transaction dateMichael B. LuuResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share12 shares$23.835,719 shares23,743.546999999999 sharesOwner coverage latest filing Sep 8, 20264Filed Jun 8, 2015
Jun 6, 2015Transaction dateMartin A. KropelnickiResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share37 shares$23.8360,727 shares147,286.546000000002 sharesOwner coverage latest filing Sep 8, 20264Filed Jun 8, 2015
Jun 5, 2015Transaction dateMartin A. KropelnickiResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share91 shares$23.8360,764 shares147,286.546000000002 sharesOwner coverage latest filing Sep 8, 20264Filed Jun 8, 2015
Jun 4, 2015Transaction dateMichael B. LuuResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share26 shares$23.75,731 shares23,743.546999999999 sharesOwner coverage latest filing Sep 8, 20264Filed Jun 8, 2015
Jun 4, 2015Transaction dateMartin A. KropelnickiResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share113 shares$23.760,855 shares147,286.546000000002 sharesOwner coverage latest filing Sep 8, 20264Filed Jun 8, 2015
May 6, 2015Transaction dateMichael B. LuuResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share11 shares$23.915,757 shares23,743.546999999999 sharesOwner coverage latest filing Sep 8, 20264Filed May 6, 2015
May 6, 2015Transaction dateMartin A. KropelnickiResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share37 shares$23.9160,968 shares147,286.546000000002 sharesOwner coverage latest filing Sep 8, 20264Filed May 6, 2015
May 5, 2015Transaction dateMartin A. KropelnickiResearch disclosed relationshipsDispositionSEC code FCommon Stock, $0.01 par value per share92 shares$23.9461,005 shares147,286.546000000002 sharesOwner coverage latest filing Sep 8, 20264Filed May 6, 2015

A reported post-transaction position is the balance stated in that historical transaction filing. A current covered position is a separate latest owner/security observation and may reflect later filings or activity. They are shown side by side as evidence points, not as a reconstructed continuous ledger.

Published 12 of 19 source candidates under the current reviewed security-resolution rules.

Covered securities

SecurityInstrument familyCovered positionsCovered value
Common Stock, $0.01 par value per shareordinary-share2$7.9M

Coverage and interpretation

Current holdings: direct positions that the reviewed ownership data can trace to an exact reporting owner, legal security, and current-basis quantity.

Current value: the existing published company-position valuation. This lab does not recalculate security values or infer missing positions.

Transaction evidence: historical flow observations with filing provenance. Reported post-transaction balances and current covered positions are separate evidence points; the lab does not interpolate ownership between them.

Reporting-owner graph: exact reporting-owner CIK relationships across the published company universe. It does not merge people by name or create a complete personal history.

Not included here: a claim of total insider ownership, total personal wealth, institutional 13F ownership, a transaction-value estimate, an insider sentiment score, or an investment recommendation.

Published ownership evidence chronology

This sequence orders only the ownership evidence already published by Grizzly Bulls for the exact reporting-owner relationships above. Transaction rows are ordered by filing date while preserving the separate economic effective date and its basis. Current covered snapshots remain separate latest observations.

The chronology does not interpolate ownership between entries, infer missing activity, pair an amended filing with an assumed parent, infer amendment supersession, or treat a current covered snapshot as proof of continuous ownership.

Martin A. Kropelnicki

SEC reporting-owner CIK 0001222882 · 1 published relationship company

SEC owner filings
Evidence dateCompanyObservationSecurity / positionSource
Sep 8, 2026Latest represented filing dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSECurrent covered snapshotChairman President & CEOValuation observation Sep 25, 2026Common Stock, $0.01 par value per share: 147,286.546000000002 sharesCurrent covered company value: $6.8MPublished current ownership snapshotForms represented: 4Owner filingsIssuer filings
Sep 8, 2026Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective Sep 4, 2026 · transaction dateReported units 505 shares · reported price 50.03Common Stock, $0.01 par value per shareReported position after transaction: 147,779.546 shares4 filing0001222882-26-000008
Sep 8, 2026Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective Sep 5, 2026 · transaction dateReported units 493 shares · reported price 50.03Common Stock, $0.01 par value per shareReported position after transaction: 147,286.546 shares4 filing0001222882-26-000008
Jun 8, 2015Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective Jun 4, 2015 · transaction dateReported units 113 shares · reported price 23.7Common Stock, $0.01 par value per shareReported position after transaction: 60,855 shares4 filing0001214659-15-004670
Jun 8, 2015Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective Jun 5, 2015 · transaction dateReported units 91 shares · reported price 23.83Common Stock, $0.01 par value per shareReported position after transaction: 60,764 shares4 filing0001214659-15-004670
Jun 8, 2015Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective Jun 6, 2015 · transaction dateReported units 37 shares · reported price 23.83Common Stock, $0.01 par value per shareReported position after transaction: 60,727 shares4 filing0001214659-15-004670
May 6, 2015Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective May 5, 2015 · transaction dateReported units 92 shares · reported price 23.94Common Stock, $0.01 par value per shareReported position after transaction: 61,005 shares4 filing0001214659-15-003725
May 6, 2015Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective May 6, 2015 · transaction dateReported units 37 shares · reported price 23.91Common Stock, $0.01 par value per shareReported position after transaction: 60,968 shares4 filing0001214659-15-003725

Company-level recent transaction history is published for 1 of 1 relationship companies in this graph; 7 published transaction rows for this exact reporting-owner CIK appear in the chronology. 1 relationship company is at the current public transaction-row limit; that does not prove additional rows exist.

Michael B. Luu

SEC reporting-owner CIK 0001583179 · 1 published relationship company

SEC owner filings
Evidence dateCompanyObservationSecurity / positionSource
Sep 8, 2026Latest represented filing dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSECurrent covered snapshotSVP Corp Svce & Chief Risk OfValuation observation Sep 25, 2026Common Stock, $0.01 par value per share: 23,743.546999999999 sharesCurrent covered company value: $1.1MPublished current ownership snapshotForms represented: 4Owner filingsIssuer filings
Sep 8, 2026Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective Sep 4, 2026 · transaction dateReported units 70 shares · reported price 50.03Common Stock, $0.01 par value per shareReported position after transaction: 23,811.547 shares4 filing0001583179-26-000009
Sep 8, 2026Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective Sep 5, 2026 · transaction dateReported units 68 shares · reported price 50.03Common Stock, $0.01 par value per shareReported position after transaction: 23,743.547 shares4 filing0001583179-26-000009
Jun 8, 2015Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective Jun 4, 2015 · transaction dateReported units 26 shares · reported price 23.7Common Stock, $0.01 par value per shareReported position after transaction: 5,731 shares4 filing0001214659-15-004672
Jun 8, 2015Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective Jun 6, 2015 · transaction dateReported units 12 shares · reported price 23.83Common Stock, $0.01 par value per shareReported position after transaction: 5,719 shares4 filing0001214659-15-004672
May 6, 2015Filed dateCALIFORNIA WATER SERVICE GROUP (CWT)NYSEDispositionSEC code FEffective May 6, 2015 · transaction dateReported units 11 shares · reported price 23.91Common Stock, $0.01 par value per shareReported position after transaction: 5,757 shares4 filing0001214659-15-003729

Company-level recent transaction history is published for 1 of 1 relationship companies in this graph; 5 published transaction rows for this exact reporting-owner CIK appear in the chronology. 1 relationship company is at the current public transaction-row limit; that does not prove additional rows exist.

Continue this ownership research

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CompanyReporting-owner contextPublished evidenceContinue research
CALIFORNIA WATER SERVICE GROUP (CWT)NYSE · Current company14Published chronology observationsLatest represented evidence Sep 8, 2026

These are company-level continuation paths, not reporting-owner subscriptions. Saving or watching one company does not automatically save or watch the other companies connected to the same reporting owner, and it does not create an owner-level alert.