Quick Takeaways
- WELLINGTON MANAGEMENT GROUP LLP filed SCHEDULE 13G for Columbia Banking System, Inc. Common Stock (COLB).
- Disclosed ownership: 6.1%.
- Date of event: 31 Dec 2025.
WELLINGTON MANAGEMENT GROUP LLP - 31 Dec 2025 SCHEDULE 13G Report for Columbia Banking System, Inc. Common Stock (COLB)
- Filing Manager
- WELLINGTON MANAGEMENT GROUP LLP
- Reporting Manager
- Wellington Management Group LLP
- Symbol
- COLB
- Shares outstanding
- 296,823,410 shares
- Disclosed Ownership
- 18,106,228 shares
- Ownership
- 6.1%
- Form type
- SCHEDULE 13G
- Filing time
- 10 Feb 2026, 11:19:49 UTC
- Date of event
- 31 Dec 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"WELLINGTON MANAGEMENT GROUP LLP disclosed 6.1% ownership in Columbia Banking System, Inc. Common Stock (COLB) on 31 Dec 2025."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 10 Feb 2026, 11:19.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (4)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Wellington Management Group LLP | 6.1% | 18,106,228 | 0 | 16,552,540 | Taisia Lowe | Regulatory Analyst | |
| Wellington Group Holdings LLP | 6.1% | 18,106,228 | 0 | 16,552,540 | Taisia Lowe | Regulatory Analyst | |
| Wellington Investment Advisors Holdings LLP | 6.1% | 18,106,228 | 0 | 16,552,540 | Taisia Lowe | Regulatory Analyst | |
| Wellington Management Company LLP | 5.8% | 18,106,228 | 0 | 16,426,942 | Taisia Lowe | Regulatory Analyst |