Form 4 for COLB COLUMBIA BANKING SYSTEM, INC.

Accepted 2024-03-04 00:00:00 ET · period of report 2024-03-01 · accession 0000887343-24-000130 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2024-03-04	2024-03-01	COLB	BARUFFI KUMI YAMAMOTO	GC, Corp. Sec	A - Grant	$17.87	+13.7K	58.0K	+31%	+$245.0K
DM	2024-03-04	2024-03-01	COLB	BARUFFI KUMI YAMAMOTO	GC, Corp. Sec	A - Grant	$17.87	+13.7K	13.7K	New	+$245.0K

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2024-03-01	A	A	13,710	$17.87	57,984	D	—	—	(F1) Restricted stock units granted 03/01/2024. Beginning on the first anniversary of the grant date, the grant will vest 33.33% per year for three years.
2	Derivative	Performance Restricted Stock Unit	2024-03-01	A	A	6,855	$17.87	6,855	D	— · — to —	6,855 Common Stock	(F2) Performance restricted stock units granted 03/01/2024. The grant will vest approximately three years following the grant date based on the issuer's relative total shareholder return performance for fiscal years 2024-2026 compared to a Compensation Committee approved group of peers.
3	Derivative	Performance Restricted Stock Unit	2024-03-01	A	A	6,855	$17.87	13,710	D	— · — to —	6,855 Common Stock	(F3) Performance restricted stock units granted 03/01/2024. The grant will vest approximately three years following the grant date based on the issuer's relative return on tangible common equity for fiscal years 2024-2026 compared to a Compensation Committee approved group of peers.