Comparable stake leader
VANGUARD CAPITAL MANAGEMENT LLC
SEC ownership of COLUMBIA BANKING SYSTEM, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000887343.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
04 Sep 2026
- Public ticker
- COLB on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
VANGUARD CAPITAL MANAGEMENT LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
VANGUARD CAPITAL MANAGEMENT LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
04 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000887343
- Issuer location
- Tacoma, WA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of COLUMBIA BANKING SYSTEM, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD CAPITAL MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
04 Sep 2026
13D/G
13F
3/4/5
Lead comparable stake: 5.2%
13D/G row: VANGUARD CAPITAL MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 5.2%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD CAPITAL MANAGEMENT LLC
5.2%
STATE STREET CORP
4.8%
WELLINGTON MANAGEMENT GROUP LLP
4.1%
Steven R. Gardner
0.2%
Hilliard C. Terry III
0.02%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.2%
|
$424,913,961
15,490,848 shares
|
$0 | 31 Mar 2026 |
| STATE STREET CORP |
13F
13D/G
Company · STATE STREET CORPORATION
|
4.8%
from 13D/G
|
$406,840,536
12,694,096 shares
|
— | 30 Jun 2026 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
13D/G
Company
|
4.1%
from 13D/G
|
$374,550,081
11,686,430 shares
|
— | 30 Jun 2026 |
| Steven R. Gardner |
3/4/5
Director
|
0.2%
|
$18,362,950
572,947 shares
|
-$403,927 | 04 Sep 2026 |
| Hilliard C. Terry III |
3/4/5
Director
|
0.02%
|
$1,522,749
55,514 shares
|
— | 14 May 2026 |
| John F. Schultz |
3/4/5
Director
|
0.02%
|
$1,382,033
50,384 shares
|
— | 14 May 2026 |
| Maria M. Pope |
3/4/5
Director
|
0.02%
|
$1,076,010
47,569 shares
|
— | 15 May 2025 |
| M. Christian Mitchell |
3/4/5
Director
|
0.01%
|
$1,149,563
41,909 shares
|
— | 14 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$624,670.
Buys
$22,478
Insiders: 1
Sells
$647,148
Insiders: 3
Net
-$624,670
Shares: -21,192
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 886
Shares: 22,078
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 886 | 0 | $22,478 | $0 | +$22,478 |
| 3-6 | 0 | 3,872 | $0 | $115,288 | -$115,288 |
| 6-9 | 0 | 18,206 | $0 | $531,859 | -$531,859 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 43 reporting-owner rows connected to COLUMBIA BANKING SYSTEM, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
43
Largest Forms 3/4/5 holder
Steven R. Gardner
Net 12M change
-$624,670
Latest report
04 Sep 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Steven R. Gardner | Director | $18,362,950 | -$403,927 | -2.2% | Median | 04 Sep 2026 |
| Cort L. O'Haver | Executive Chairman, Director | $15,179,425 | Mixed | 28 Feb 2025 | ||
| Clint Stein | Chair, CEO, President, Director | $10,398,458 | Mixed | 13 Mar 2026 | ||
| Ron L. Farnsworth | Chief Financial Officer | $5,954,167 | Mixed | 28 Feb 2025 | ||
| Torran B. Nixon | Senior Executive VP | $4,939,981 | -$127,932 | -2.5% | Mixed | 13 Mar 2026 |
| Andrew H. Ognall | EVP Chief Risk Officer | $4,067,701 | Mixed | 13 Mar 2026 | ||
| Christopher Merrywell | Senior Executive VP | $3,100,335 | Mixed | 13 Mar 2026 | ||
| Drew K. Anderson | EVP Chief Admin Officer | $2,327,986 | Mixed | 13 Mar 2026 | ||
| Luis Machuca | Director | $2,307,403 | Mixed | 15 Jun 2026 | ||
| Kumi Yamamoto Baruffi | EVP General Counsel, Corp Sec | $2,118,179 | Mixed | 13 Mar 2026 | ||
| Tom M. Hulbert | Director | $2,109,499 | Mixed | 29 Apr 2022 | ||
| Frank Namdar | EVP Chief Credit Officer | $1,694,476 | Mixed | 13 Mar 2026 | ||
| Lisa Dow | Chief Risk Officer | $1,538,905 | Mixed | 28 Feb 2025 | ||
| Hilliard C. Terry III | Director | $1,522,749 | Mixed | 14 May 2026 | ||
| Ford Elsaesser | Director | $1,404,102 | Mixed | 28 Feb 2023 | ||
| John F. Schultz | Director | $1,382,033 | Mixed | 14 May 2026 | ||
| Peggy Y. Fowler | Director | $1,380,976 | Mixed | 10 May 2024 | ||
| Aaron James Deer | EVP Chief Strategy/Innov Offcr | $1,356,634 | +$22,478 | +1.7% | Mixed | 30 Jun 2026 |
| Andy McDonald | EVP Chief Credit Officer | $1,325,622 | Mixed | 28 Feb 2023 | ||
| M. Christian Mitchell | Director | $1,149,563 | Mixed | 14 May 2026 |
Recent insider transactions for COLUMBIA BANKING SYSTEM, INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Steven R. Gardner | COLB | Common Stock | Award | 2,577 | 2,577 | 04 Sep 2026 | Direct | |||
| Simone Lagomarsino | COLB | Common Stock | Award | 2,670 | 2,670 | 02 Sep 2026 | Direct | |||
| Judi Giem | COLB | Common Stock | Tax liability | -26.9% | -643 | 1,750 | 14 Aug 2026 | Direct | ||
| Judi Giem | COLB | Common Stock | Options Exercise | 2,393 | 2,393 | 14 Aug 2026 | Direct | |||
| Judi Giem | COLB | Restricted Stock Unit | Options Exercise | -15.4% | -2,393 | 13,108 | 14 Aug 2026 | Direct | ||
| Aaron James Deer | COLB | Common Stock | Purchase | 2.12% | $22,478 | $25.37 | 886 | 42,761 | 30 Jun 2026 | Direct |
| Luis Machuca | COLB | Deferred Compensation Phantom Stock | Award | 1.16% | 563 | 48,966 | 15 Jun 2026 | Deferred Compensation | ||
| Devine David Moore | COLB | Common Stock | Sale | -17.2% | $115,288 | $29.77 | -3,872 | 18,636 | 08 Jun 2026 | Direct |
| Anddria Varnado | COLB | Common Stock | Award | 14.7% | 3,949 | 30,894 | 14 May 2026 | Direct | ||
| Hilliard C. Terry III | COLB | Common Stock | Award | 7.66% | 3,949 | 55,514 | 14 May 2026 | Direct | ||
| Jaynie M. Studenmund | COLB | Common Stock | Award | 22.1% | 3,949 | 21,807 | 14 May 2026 | Direct | ||
| Elizabeth Whitehead Seaton | COLB | Common Stock | Award | 3,949 | 3,949 | 14 May 2026 | Direct | |||
| John F. Schultz | COLB | Common Stock | Award | 8.5% | 3,949 | 50,384 | 14 May 2026 | Direct | ||
| M. Christian Mitchell | COLB | Common Stock | Award | 10.4% | 3,949 | 41,909 | 14 May 2026 | Direct | ||
| Luis Machuca | COLB | Common Stock | Award | 15.2% | 3,949 | 29,953 | 14 May 2026 | Direct | ||
| Randal Lee Lund | COLB | Common Stock | Award | 16.6% | 3,949 | 27,663 | 14 May 2026 | Direct | ||
| Eric Forrest | COLB | Common Stock | Award | 12.2% | 3,949 | 36,351 | 14 May 2026 | Direct | ||
| Mark A. Finkelstein | COLB | Common Stock | Award | 12.5% | 3,949 | 35,554 | 14 May 2026 | Direct | ||
| Brock Lakely | COLB | Common Stock | Tax liability | -3.57% | -396 | 10,708 | 15 Apr 2026 | Direct | ||
| Luis Machuca | COLB | Deferred Compensation Phantom Stock | Award | 1.38% | 659 | 48,403 | 16 Mar 2026 | Deferred Compensation | ||
| Kumi Yamamoto Baruffi | COLB | Common Stock | Tax liability | -1.71% | -937 | 53,715 | 13 Mar 2026 | Direct | ||
| Brock Lakely | COLB | Common Stock | Tax liability | -1.86% | -211 | 11,104 | 13 Mar 2026 | Direct | ||
| Clint Stein | COLB | Common Stock | Tax liability | -4.5% | -7,151 | 151,584 | 13 Mar 2026 | Direct | ||
| Clint Stein | COLB | Common Stock | Options Exercise | 12.9% | 18,171 | 158,735 | 13 Mar 2026 | Direct | ||
| Clint Stein | COLB | Restricted Stock Unit | Options Exercise | -9.81% | -18,171 | 166,984 | 13 Mar 2026 | Direct | ||
| Andrew H. Ognall | COLB | Common Stock | Tax liability | -1.27% | -951 | 74,132 | 13 Mar 2026 | Direct | ||
| Andrew H. Ognall | COLB | Common Stock | Options Exercise | 3.28% | 2,381 | 75,083 | 13 Mar 2026 | Direct | ||
| Andrew H. Ognall | COLB | Restricted Stock Unit | Options Exercise | -4.3% | -2,381 | 53,026 | 13 Mar 2026 | Direct | ||
| Torran B. Nixon | COLB | Common Stock | Tax liability | -1.94% | -2,002 | 101,240 | 13 Mar 2026 | Direct | ||
| Torran B. Nixon | COLB | Common Stock | Options Exercise | 5.1% | 5,013 | 103,242 | 13 Mar 2026 | Direct | ||
| Torran B. Nixon | COLB | Restricted Stock Unit | Options Exercise | -9.27% | -5,013 | 49,052 | 13 Mar 2026 | Direct | ||
| Frank Namdar | COLB | Common Stock | Tax liability | -4.11% | -1,367 | 31,923 | 13 Mar 2026 | Direct | ||
| Frank Namdar | COLB | Common Stock | Options Exercise | 9.26% | 2,820 | 33,290 | 13 Mar 2026 | Direct | ||
| Frank Namdar | COLB | Restricted Stock Unit | Options Exercise | -17.1% | -2,820 | 13,640 | 13 Mar 2026 | Direct | ||
| Devine David Moore | COLB | Common Stock | Tax liability | -1.64% | -376 | 22,508 | 13 Mar 2026 | Direct | ||
| Devine David Moore | COLB | Common Stock | Options Exercise | 4.28% | 940 | 22,884 | 13 Mar 2026 | Direct | ||
| Devine David Moore | COLB | Restricted Stock Unit | Options Exercise | -16.7% | -940 | 4,679 | 13 Mar 2026 | Direct | ||
| Christopher Merrywell | COLB | Common Stock | Tax liability | -4.29% | -1,973 | 44,067 | 13 Mar 2026 | Direct | ||
| Christopher Merrywell | COLB | Common Stock | Options Exercise | 12.2% | 5,013 | 46,040 | 13 Mar 2026 | Direct | ||
| Christopher Merrywell | COLB | Restricted Stock Unit | Options Exercise | -8.9% | -5,013 | 51,291 | 13 Mar 2026 | Direct | ||
| Aaron James Deer | COLB | Common Stock | Tax liability | -1.45% | -617 | 41,875 | 13 Mar 2026 | Direct | ||
| Aaron James Deer | COLB | Common Stock | Options Exercise | 3.83% | 1,567 | 42,492 | 13 Mar 2026 | Direct | ||
| Aaron James Deer | COLB | Restricted Stock Unit | Options Exercise | -18% | -1,567 | 7,133 | 13 Mar 2026 | Direct | ||
| Drew K. Anderson | COLB | Common Stock | Tax liability | -5.24% | -1,215 | 21,969 | 13 Mar 2026 | Direct | ||
| Drew K. Anderson | COLB | Common Stock | Options Exercise | 12.1% | 2,506 | 23,184 | 13 Mar 2026 | Direct | ||
| Drew K. Anderson | COLB | Restricted Stock Unit | Options Exercise | -4.72% | -2,506 | 50,607 | 13 Mar 2026 | Direct | ||
| Torran B. Nixon | COLB | Common Stock | Sale | -2.23% | $64,624 | $28.85 | -2,240 | 98,229 | 04 Mar 2026 | Direct |
| Torran B. Nixon | COLB | Common Stock | Sale | -2.18% | $63,308 | $28.25 | -2,241 | 100,469 | 03 Mar 2026 | Direct |
| Clint Stein | COLB | Common Stock | Tax liability | -6.51% | -9,789 | 140,564 | 01 Mar 2026 | Direct | ||
| Andrew H. Ognall | COLB | Common Stock | Tax liability | -1.76% | -1,304 | 72,702 | 01 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.