Columbia Banking System, Inc. (COLB) Insider Ownership

Historic Insider Ownership Trends

As of May 23, 2026, the three largest insider holders of COLB are Cort L O'Haver (Executive Chairman, 390.82K shares), Clint Stein (Chair, Ceo, President, 151.58K shares), Ron L Farnsworth (Chief Financial Officer, 141.16K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Luis Machuca - 26,004 0 16 May, 2025
Tom Hulbert - 69,990 0 29 Nov, 2021
Jaynie M Studenmund - 17,858 3,843 03 Sep, 2025
Craig D Eerkes - 35,346 0 14 May, 2024
Andy Mcdonald Evp Chief Credit Officer 49,686 0 02 Mar, 2023
Ron L Farnsworth Chief Financial Officer 141,162 0 04 Mar, 2025
S Mae Fujita Numata - 37,113 0 16 May, 2025
Michelle Lantow - 23,140 0 23 Feb, 2023
Hilliard C. Iii Terry - 51,565 0 16 May, 2025
Cort L O'Haver Executive Chairman 390,824 0 04 Mar, 2025
Mark A Finkelstein - 31,605 0 16 May, 2025
Clint Stein Chair, Ceo, President 151,584 0 17 Mar, 2026
Andrew H Ognall Evp Chief Risk Officer 74,132 0 17 Mar, 2026
David C Lawson Evp Chief H.R. Officer 28,152 0 02 Mar, 2023
Elizabeth Whitehead Seaton - 32,566 0 16 May, 2025
Eric Forrest - 32,402 0 16 May, 2025
Kumi Yamamoto Baruffi Evp General Counsel, Corp Sec 53,715 0 20 Mar, 2026
Torran B Nixon Senior Executive Vp 101,240 0 17 Mar, 2026
Randal Lee Lund - 23,714 0 16 May, 2025
Janine Terrano - 10,474 0 23 Feb, 2023
Lisa Dow Chief Risk Officer 35,110 0 04 Mar, 2025
Brock Lakely Evp, Chief Accounting Officer 10,708 0 16 Apr, 2026
Anddria Varnado - 26,945 0 16 May, 2025
Christopher Merrywell Evp Chief Operating Officer 47,924 0 02 Mar, 2023
Eric J Eid Evp Chief Digital Tech Off 29,243 0 02 Mar, 2023
Devine David Moore Evp Chief Marketing Officer 22,508 0 17 Mar, 2026
Lisa M White Pao Corporate Controller 29,045 0 04 Mar, 2025
Aaron James Deer Evp Chief Strategy/Innov Offcr 41,875 0 17 Mar, 2026
Laura Alvarez Schrag - 4,236 0 23 Feb, 2023
Tracy Mack-Askew - 4,236 0 23 Feb, 2023
Sheri Burns Chief Human Resources Officer 42,488 0 12 Mar, 2024
Drew K Anderson Evp Chief Admin Officer 21,969 0 17 Mar, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
15 Apr, 2026 Brock Lakely Common Stock D 396 $29.10 10,708 D F
13 Mar, 2026 Brock Lakely Common Stock D 211 $26.23 11,104 D F
13 Mar, 2026 Kumi Yamamoto Baruffi Common Stock D 937 $26.23 53,715 D F
13 Mar, 2026 Drew K Anderson Common Stock A 2,506 $26.23 23,184 D M
13 Mar, 2026 Torran B Nixon Common Stock A 5,013 $26.23 103,242 D M
13 Mar, 2026 Aaron James Deer Common Stock A 1,567 $26.23 42,492 D M
13 Mar, 2026 Brock Lakely Common Stock A 846 $26.23 11,315 D M
13 Mar, 2026 Aaron James Deer Common Stock A 1,567 $26.23 42,492 D M
13 Mar, 2026 Devine David Moore Common Stock A 940 $26.23 22,884 D M
13 Mar, 2026 Andrew H Ognall Common Stock A 2,381 $26.23 75,083 D M
13 Mar, 2026 Devine David Moore Common Stock A 940 $26.23 22,884 D M
13 Mar, 2026 Clint Stein Common Stock A 18,171 $26.23 158,735 D M
13 Mar, 2026 Kumi Yamamoto Baruffi Common Stock A 2,381 $26.23 54,652 D M
13 Mar, 2026 Devine David Moore Common Stock A 940 $26.23 22,884 D M
13 Mar, 2026 Christopher Merrywell Common Stock A 5,013 $26.23 46,040 D M
13 Mar, 2026 Clint Stein Common Stock A 18,171 $26.23 158,735 D M
13 Mar, 2026 Clint Stein Common Stock A 18,171 $26.23 158,735 D M
13 Mar, 2026 Aaron James Deer Common Stock A 1,567 $26.23 42,492 D M
13 Mar, 2026 Christopher Merrywell Common Stock A 5,013 $26.23 46,040 D M
13 Mar, 2026 Christopher Merrywell Common Stock A 5,013 $26.23 46,040 D M