---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-064607"
form_type: "8-K"
ticker: "CWT"
cik: "0001035201"
company_name: "CALIFORNIA WATER SERVICE GROUP"
filed_at: "2026-05-20T21:12:43+00:00"
generated_at: "2026-05-20T21:16:34.192370+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# California Water Service Group promotes Johnson to VP California Ops, Shimansky to VP Rates effective July 1, 2026

## Summary
- Tamara S. Johnson promoted to newly created VP, California Operations, effective July 1, 2026.
- Gregory D. Shimansky promoted to VP, Rates and Regulatory Affairs, effective same date.
- Shimansky succeeds Greg A. Milleman, who is retiring after a decade at the company.
- Johnson has 40 years at California Water Service, most recently as Director of Field Operations.
- Shimansky joined the Group in 2024; prior roles at Indiana American Water and San Diego Gas & Electric.

## SEC filing metadata
- accession: 0001104659-26-064607
- form_type: 8-K
- ticker: CWT
- cik: 0001035201
- company_name: CALIFORNIA WATER SERVICE GROUP
- filed_at: 2026-05-20T21:12:43+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1035201/000110465926064607/0001104659-26-064607-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1035201/000110465926064607/tm2615262d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-064607
- JSON: https://secwatch.observer/filing/0001104659-26-064607.json
- Plain text: https://secwatch.observer/filing/0001104659-26-064607.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.