Finkelstein Mark A - Insider Non-Derivative Transactions at COLUMBIA BANKING SYSTEM, INC. (COLB) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on May 15, 2025, Finkelstein Mark A's relationship to COLUMBIA BANKING SYSTEM, INC. (COLB) is Director, and currently has 15,640 shares of Common, and 31,605 shares of Common Stock.

The charts below show the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other COLB insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Finkelstein Mark A - Insider Non-Derivative Transactions of COLB Common

Finkelstein Mark A - Insider Non-Derivative Transactions of COLB Common Stock

Finkelstein Mark A - Insider Non-Derivative Transactions at COLB

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
May 16, 2025	Acquisition -- (Common Stock)	3382	0	31605
May 11, 2024	Acquisition -- (Common Stock)	4183	0	28223
Jan 31, 2024	P -- (Common Stock)	3592	20.87	23908
May 19, 2023	Acquisition -- (Common Stock)	4028	0	20316
Mar 3, 2023	Acquisition -- (Common Stock)	648	0	16288
Feb 22, 2023	Acquisition -- (Common)	1738	0	15640