v3.26.1
Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2025
EBP 001  
EBP, Investment, Fair Value and NAV [Line Items]  
EBP, Investment, Fair Value and NAV
The following tables disclose by level, the fair value hierarchy, of the Plan's assets at fair value:
Investment Assets at Fair Value as of December 31, 2025
(in thousands)Level 1Level 2Level 3Total
Money markets and other cash equivalents$176 $— $— $176 
Registered investment companies379,666 — — 379,666 
Common stock - Columbia Banking System, Inc.15,070 — — 15,070 
Self-directed brokerage accounts2,645 — — 2,645 
Total assets in the fair value hierarchy$397,557 $— $— $397,557 
Investments measured at NAV (1)
Collective trusts$439,096 
Total investments at fair value$836,653 
(1)
Certain investments that were measured at net asset value per share have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the statement of net assets available for benefits.

Investment Assets at Fair Value as of December 31, 2024
(in thousands)Level 1Level 2Level 3Total
Money markets and other cash equivalents$60 $— $— $60 
Registered investment companies344,389 — — 344,389 
Common stock – Columbia Banking System, Inc.15,200 — — 15,200 
Self-directed brokerage accounts
4,387 — — 4,387 
Total assets in the fair value hierarchy$364,036 $— $— $364,036 
Investments measured at NAV (1)
Collective trusts$385,417 
Total investments at fair value$749,453 
(1)
Certain investments that were measured at net asset value per share have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the statement of net assets available for benefits.

The following tables summarize investments for which fair value is measured using the NAV per share practical expedient:
December 31, 2025Fair ValueUnfunded CommitmentsRedemption FrequencyRedemption Notice Period
(in thousands)
Collective trusts$439,096  None Daily N/A
December 31, 2024Fair ValueUnfunded CommitmentsRedemption FrequencyRedemption Notice Period
(in thousands)
Collective trusts$385,417 NoneDailyN/A