BARUFFI KUMI YAMAMOTO (0001619728)

Mailing Address C/O COLUMBIA BANKING SYSTEM, INC PO BOX 2156, MS WA0253-9 TACOMA WA 98401-2156 Ownership Reports for Issuers: (Click on issuer name to see other owners for the issuer, or CIK for issuer filings.) Issuer Filings Transaction Date Type of Owner COLUMBIA BANKING SYSTEM INC Current Name:COLUMBIA BANKING SYSTEM, INC. 0000887343 2016-07-01 officer: EVP and General Counsel

Items 1 - 80

The information presented below contains only portions of the information presented in the referenced filing or filings.
You should consult the original filing for complete information. Hyperlinks to the forms are provided for your convenience.

Acquistion or Disposition	Transaction Date	Deemed Execution Date	Issuer	Form	Transaction Type	Direct or Indirect Ownership	Number of Securities Transacted	Number of Securities Owned	Line Number	Issuer CIK	Security Name
D	2025-02-28		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	1799.0000	54263.0000	1	0000887343	Common Stock
A	2025-02-25		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	3571.0000	20852.0000	3	0000887343	Performance Restricted Stock Unit
A	2025-02-25		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	3571.0000	17281.0000	2	0000887343	Performance Restricted Stock Unit
A	2025-02-25		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	7142.0000	7142.0000	1	0000887343	Restricted Stock Unit
D	2025-02-14		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	1031.0000	56062.0000	3	0000887343	Common Stock
D	2025-02-14		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	442.0000	57093.0000	2	0000887343	Common Stock
A	2025-02-14		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1012.0000	57535.0000	1	0000887343	Common Stock
D	2025-01-01		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	772.0000	56523.0000	2	0000887343	Common Stock
D	2025-01-01		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	689.0000	57295.0000	1	0000887343	Common Stock
A	2024-03-01		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	6855.0000	13710.0000	3	0000887343	Performance Restricted Stock Unit
A	2024-03-01		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	13710.0000	57984.0000	1	0000887343	Common Stock
A	2024-03-01		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	6855.0000	6855.0000	2	0000887343	Performance Restricted Stock Unit
A	2024-02-15		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1012.0000	44274.0000	2	0000887343	Common Stock
A	2024-02-15		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	673.0000	43262.0000	1	0000887343	Common Stock
D	2024-01-01		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	461.0000	42589.0000	2	0000887343	Common Stock
D	2024-01-01		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	461.0000	43050.0000	1	0000887343	Common Stock
A	2023-06-30		COLUMBIA BANKING SYSTEM, INC.	4	P-Purchase	--D	854.0000	43511.0000	1	0000887343	Common Stock
D	2023-03-27		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	507.0000	42657.0000	1	0000887343	Common Stock
A	2023-02-28		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1020.0000	39942.0000	2	0000887343	Common
A	2023-02-28		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1020.0000	38922.0000	1	0000887343	Common
A	2023-02-28		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1702.0000	41644.0000	3	0000887343	Common
A	2023-02-28		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1520.0000	43164.0000	4	0000887343	Common
A	2023-02-21		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	3948.0000	37901.0000	4	0000887343	Common
A	2023-02-21		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	7898.0000	33953.0000	3	0000887343	Common
D	2023-02-21		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	609.0000	26055.0000	2	0000887343	Common
A	2023-02-21		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1456.0000	26664.0000	1	0000887343	Common
D	2023-02-15		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	389.0000	24286.0000	2	0000887343	Common
A	2023-02-15		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	859.0000	24675.0000	1	0000887343	Common
A	2023-02-15		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	673.0000	24959.0000	3	0000887343	Common
D	2023-02-15		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	305.0000	24654.0000	4	0000887343	Common
A	2023-02-15		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1012.0000	25666.0000	5	0000887343	Common
D	2023-02-15		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	458.0000	25208.0000	6	0000887343	Common
A	2022-12-30		COLUMBIA BANKING SYSTEM, INC.	4	P-Purchase	--D	232.0000	23816.0000	1	0000887343	Common
A	2022-06-30		COLUMBIA BANKING SYSTEM, INC.	4	P-Purchase	--D	446.0000	23584.0000	1	0000887343	Common
D	2022-03-25		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	188.0000	23138.0000	1	0000887343	Common
D	2022-03-07		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	385.0000	23326.0000	2	0000887343	Common
A	2022-03-07		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1592.0000	23711.0000	1	0000887343	Common
D	2022-02-28		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	289.0000	22119.0000	1	0000887343	Common
A	2022-02-15		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	470.0000	22408.0000	2	0000887343	Common
A	2022-02-15		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	600.0000	21938.0000	1	0000887343	Common
A	2022-01-04		COLUMBIA BANKING SYSTEM, INC.	4	P-Purchase	--D	186.0000	21338.0000	1	0000887343	Common
A	2021-07-06		COLUMBIA BANKING SYSTEM, INC.	4	P-Purchase	--D	304.0000	21152.0000	1	0000887343	Common
D	2021-03-26		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	126.0000	20848.0000	1	0000887343	Common
D	2021-03-18		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	576.0000	20974.0000	2	0000887343	Common
A	2021-03-18		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	2360.0000	21550.0000	1	0000887343	Common
D	2021-02-26		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	161.0000	19190.0000	1	0000887343	Common
D	2021-02-22		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	255.0000	19351.0000	1	0000887343	Common
A	2021-02-15		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	621.0000	19606.0000	1	0000887343	Common
A	2021-01-07		COLUMBIA BANKING SYSTEM, INC.	4	P-Purchase	--D	219.0000	18985.0000	1	0000887343	Common
A	2020-07-02		COLUMBIA BANKING SYSTEM, INC.	4	P-Purchase	--D	337.0000	18766.0000	1	0000887343	Common
D	2020-02-28		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	114.0000	18888.0000	1	0000887343	Common
A	2020-02-27		COLUMBIA BANKING SYSTEM, INC.	4/A	A-Award	--D	1955.0000	19002.0000	1	0000887343	Common
A	2020-02-27		COLUMBIA BANKING SYSTEM, INC.	4	A-Award	--D	1955.0000	19002.0000	1	0000887343	Common
D	2020-02-27		COLUMBIA BANKING SYSTEM, INC.	4/A	F-InKind	--D	459.0000	18429.0000	2	0000887343	Common
D	2020-02-24		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	320.0000	17047.0000	1	0000887343	Common
D	2020-02-21		COLUMBIA BANKING SYSTEM, INC.	4	F-InKind	--D	152.0000	17367.0000	1	0000887343	Common
A	2020-01-03		COLUMBIA BANKING SYSTEM, INC.	4	P-Purchase	--D	137.0000	17519.0000	1	0000887343	Common
A	2019-07-01		COLUMBIA BANKING SYSTEM, INC.	4	P-Purchase	--D	259.0000	17382.0000	1	0000887343	Common
A	2019-03-27		COLUMBIA BANKING SYSTEM INC	4	A-Award	--D	2575.0000	17123.0000	1	0000887343	Common
D	2019-03-25		COLUMBIA BANKING SYSTEM INC	4	F-InKind	--D	200.0000	14548.0000	1	0000887343	Common
A	2019-02-27		COLUMBIA BANKING SYSTEM INC	4	A-Award	--D	2627.0000	15501.0000	1	0000887343	Common
D	2019-02-27		COLUMBIA BANKING SYSTEM INC	4	F-InKind	--D	434.0000	15067.0000	2	0000887343	Common
D	2019-02-27		COLUMBIA BANKING SYSTEM INC	4/A	F-InKind	--D	753.0000	14748.0000	2	0000887343	Common
A	2019-02-27		COLUMBIA BANKING SYSTEM INC	4/A	A-Award	--D	2627.0000	15501.0000	1	0000887343	Common
D	2019-02-22		COLUMBIA BANKING SYSTEM INC	4	F-InKind	--D	293.0000	12874.0000	1	0000887343	Common
A	2019-01-02		COLUMBIA BANKING SYSTEM INC	4	P-Purchase	--D	210.0000	13167.0000	1	0000887343	Common
D	2018-11-30		COLUMBIA BANKING SYSTEM INC	4	F-InKind	--D	305.0000	12957.0000	1	0000887343	Common
A	2018-07-05		COLUMBIA BANKING SYSTEM INC	4	P-Purchase	--D	374.0000	13253.0000	1	0000887343	Common
D	2018-03-23		COLUMBIA BANKING SYSTEM INC	4	F-InKind	--D	120.0000	12879.0000	1	0000887343	Common
D	2018-02-28		COLUMBIA BANKING SYSTEM INC	4	F-InKind	--D	534.0000	12999.0000	2	0000887343	Common
A	2018-02-28		COLUMBIA BANKING SYSTEM INC	4	A-Award	--D	2276.0000	13533.0000	1	0000887343	Common
A	2018-02-28		COLUMBIA BANKING SYSTEM INC	4	A-Award	--D	1909.0000	11257.0000	1	0000887343	Common
D	2018-02-23		COLUMBIA BANKING SYSTEM INC	4	F-InKind	--D	128.0000	9348.0000	1	0000887343	Common
A	2018-01-08		COLUMBIA BANKING SYSTEM INC	4	P-Purchase	--D	174.0000	9476.0000	1	0000887343	Common
D	2017-12-01		COLUMBIA BANKING SYSTEM INC	4	F-InKind	--D	206.0000	9302.0000	1	0000887343	Common
A	2017-07-03		COLUMBIA BANKING SYSTEM INC	4	A-Award	--D	317.0000	9508.0000	1	0000887343	Common
A	2017-02-22		COLUMBIA BANKING SYSTEM INC	4	A-Award	--D	1700.0000	9191.0000	1	0000887343	Common
A	2017-01-06		COLUMBIA BANKING SYSTEM INC	4	A-Award	--D	249.0000	7491.0000	1	0000887343	Common Stock
A	2016-07-01		COLUMBIA BANKING SYSTEM INC	4	A-Award	--D	446.0000	7242.0000	1	0000887343	Common Stock
A	2016-02-24		COLUMBIA BANKING SYSTEM INC	4	A-Award	--D	2153.0000	6796.0000	1	0000887343	Common Stock

http://www.sec.gov/cgi-bin/own-disp

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