| 2024-01-24 | -20.3% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2024-07-25 | +14.8% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2021-10-12 | -13.1% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2021-10-12 | -13.1% | news | Reuters | U.S. West Coast regional lenders Columbia and Umpqua to combine - Reuters |
| 2025-04-02 | -7.5% | legal | SEC EDGAR | COLB 8-K: 5.02, 7.01 (SEC Filing) |
| 2023-05-15 | +7.5% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2023-08-14 | -6.9% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2025-10-16 | -6.8% | news | StockStory | Columbia Banking System, Cathay General Bancorp, Cadence Bank, BOK Financial, and BankUnited Shares Are Falling, What You Need To Know - StockStory |
| 2023-04-26 | +5.8% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-07-25 | +4.8% | analyst | Seeking Alpha | Columbia Banking System signals accelerated Pacific Premier integration and 15% operating return on equity as tech investments deepen |
| 2025-07-25 | +4.8% | earnings | Seeking Alpha | Columbia Banking System, Inc. (COLB) Q2 2025 Earnings Call Transcript |
| 2023-01-24 | +4.7% | legal | SEC EDGAR | COLB 8-K: 2.02, 8.01 (SEC Filing) |
| 2026-02-27 | -4.6% | news | StockStory | Zions Bancorporation, Western Alliance Bancorporation, The Bancorp, Live Oak Bancshares, and Columbia Banking System Stocks Trade Down, What You Need To Know - StockStory |
| 2022-04-21 | +4.5% | legal | SEC EDGAR | COLB 8-K: 2.02, 8.01 (SEC Filing) |
| 2026-02-04 | +4.4% | news | Forbes | Columbia Banking System - Forbes |
| 2022-10-26 | +4.3% | legal | SEC EDGAR | COLB 8-K: 8.01 (SEC Filing) |
| 2024-09-13 | +4.3% | analyst | Seeking Alpha | Columbia Banking: A 6% Yield Opportunity With Regional Brand Strength In Pacific Northwest (Downgrade) - Seeking Alpha |
| 2023-07-19 | -4.2% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-04-25 | -3.8% | legal | SEC EDGAR | COLB 8-K: 1.01 and (SEC Filing) |
| 2025-10-07 | -3.8% | news | Sure Dividend | 10 Best Regional Banks For Rising Dividends - Sure Dividend |
| 2026-04-08 | +3.7% | earnings | MarketBeat | Oak Thistle LLC Invests $2.19 Million in Columbia Banking System, Inc. $COLB - MarketBeat |
| 2026-04-08 | +3.7% | news | TradingView | Rocket Companies, Columbia Banking System, and Triumph Financial Stocks Trade Up, What You Need To Know - TradingView |
| 2022-01-28 | -3.4% | legal | SEC EDGAR | COLB 8-K: 5.07, 8.01 (SEC Filing) |
| 2026-01-22 | -3.3% | earnings | Seeking Alpha | Columbia Banking System, Inc. 2025 Q4 - Results - Earnings Call Presentation |
| 2026-01-22 | -3.3% | earnings | Seeking Alpha | COLB posts profit beat in first full-quarter contribution from Pacific Premier |
| 2026-01-22 | -3.3% | earnings | Seeking Alpha | Columbia Banking System GAAP EPS of $0.72 beats by $0.06, revenue of $717M beats by $23.54M |
| 2026-01-22 | -3.3% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2026-01-22 | -3.3% | earnings | Investing.com | Earnings call transcript: Columbia Banking Q4 2025 beats expectations - Investing.com |
| 2022-07-21 | -3.3% | legal | SEC EDGAR | COLB 8-K: 2.02, 8.01 (SEC Filing) |
| 2022-09-20 | +3.3% | legal | SEC EDGAR | COLB 8-K: 8.01 (SEC Filing) |
| 2026-01-23 | -3.2% | news | Seeking Alpha | Columbia Banking System outlines NIM surpassing 4% in 2026 with increased buybacks and Pac Premier integration |
| 2026-01-23 | -3.2% | earnings | Seeking Alpha | Columbia Banking System, Inc. (COLB) Q4 2025 Earnings Call Transcript |
| 2026-01-23 | -3.2% | earnings | Yahoo Finance | COLB's Q4 Earnings Beat on Higher Revenues, Provisions Dip Y/Y - Yahoo Finance |
| 2025-11-14 | -3.2% | earnings | Seeking Alpha | Columbia Banking System raises quarterly dividend by 3% to $0.37/share |
| 2025-11-14 | -3.2% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2022-01-21 | +3.2% | legal | SEC EDGAR | COLB 8-K: 2.02, 8.01 (SEC Filing) |
| 2025-01-23 | -3.1% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2026-01-21 | +3.0% | earnings | Seeking Alpha | Columbia Banking System Q4 2025 Earnings Preview |
| 2026-01-21 | +3.0% | earnings | Yahoo Finance | What To Expect From Columbia Banking System’s (COLB) Q4 Earnings - Yahoo Finance |
| 2025-10-31 | +2.9% | earnings | Seeking Alpha | Columbia Banking System, Inc. 2025 Q3 - Results - Earnings Call Presentation |
| 2025-10-31 | +2.9% | news | Seeking Alpha | Columbia Banking System signals accelerated capital return with $700M buyback and targets $8B loan optimization amid Pac Premier integration |
| 2025-10-31 | +2.9% | earnings | Seeking Alpha | Columbia Banking System, Inc. (COLB) Q3 2025 Earnings Call Transcript |
| 2022-01-20 | +2.9% | legal | SEC EDGAR | COLB 8-K: 8.01 (SEC Filing) |
| 2025-11-18 | +2.9% | news | Yahoo Finance | Columbia Banking Rewards Shareholders With a 2.8% Dividend Hike - Yahoo Finance |
| 2024-02-22 | -2.9% | news | Seeking Alpha | Discover 3 Regional Bank Stocks To Sell According To SA’s Quant System - Seeking Alpha |
| 2024-10-24 | +2.8% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-08-06 | -2.8% | legal | SEC EDGAR | COLB 8-K: 7.01, 8.01 (SEC Filing) |
| 2024-02-09 | +2.8% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2023-06-27 | -2.8% | legal | SEC EDGAR | COLB 8-K: 8.01 (SEC Filing) |
| 2026-03-06 | -2.7% | news | StockStory | Truist Financial, First Merchants, East West Bank, Columbia Banking System, and BankUnited Stocks Trade Down, What You Need To Know - StockStory |
| 2026-03-06 | -2.7% | news | Finviz | Truist Financial, First Merchants, East West Bank, Columbia Banking System, and BankUnited Stocks Trade Down, What You Need To Know - Finviz |
| 2026-03-06 | -2.7% | news | The Globe and Mail | Truist Financial, First Merchants, East West Bank, Columbia Banking System, and BankUnited Stocks Trade Down, What You Need To Know - The Globe and Mail |
| 2021-10-01 | +2.7% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2022-10-20 | +2.7% | legal | SEC EDGAR | COLB 8-K: 2.02 and (SEC Filing) |
| 2023-01-10 | -2.7% | legal | SEC EDGAR | COLB 8-K: 1.01, 8.01 (SEC Filing) |
| 2026-03-05 | -2.6% | news | Yahoo Finance | A Look At Columbia Banking System (COLB) Valuation After Recent Share Price Pullback - Yahoo Finance |
| 2026-03-05 | -2.6% | news | Yahoo Finance | Is It Time To Reassess Columbia Banking System (COLB) After Recent Share Price Weakness - Yahoo Finance |
| 2023-03-01 | -2.6% | legal | SEC EDGAR | COLB 8-K: 2.01, 2.03, 5.02, 5.03, 8.01 (SEC Filing) |
| 2025-11-06 | +2.5% | news | Seeking Alpha | Activist investor HoldCo won't pursue proxy contests at two regional banks |
| 2025-11-21 | +2.5% | legal | SEC EDGAR | COLB 8-K: 5.02 (SEC Filing) |
| 2025-11-21 | +2.5% | news | StockStory | East West Bank, Columbia Banking System, Cathay General Bancorp, BankUnited, and Axos Financial Shares Are Soaring, What You Need To Know - StockStory |
| 2025-11-21 | +2.5% | news | FinancialContent | East West Bank, Columbia Banking System, Cathay General Bancorp, BankUnited, and Axos Financial Shares Are Soaring, What You Need To Know - FinancialContent |
| 2025-10-30 | +2.5% | executive | Seeking Alpha | Columbia Banking System names Ivan Seda as next CFO |
| 2025-10-30 | +2.5% | earnings | Seeking Alpha | Columbia Banking System Non-GAAP EPS of $0.85 beats by $0.16, revenue of $582M beats by $8.98M |
| 2025-10-30 | +2.5% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-10-30 | +2.5% | earnings | Yahoo Finance | Columbia Banking System Inc (COLB) Q3 2025 Earnings Call Highlights: Strategic Acquisition ... - Yahoo Finance |
| 2023-02-27 | -2.3% | legal | SEC EDGAR | COLB 8-K: 8.01 (SEC Filing) |
| 2026-04-10 | -2.3% | analyst | simplywall.st | Why Columbia Banking System (COLB) Is Up 6.6% After Geopolitical Tensions Eased And Analysts Reaffirmed Outlook - simplywall.st |
| 2025-10-28 | +2.2% | news | CNBC | 'We're trying to shame them': Upstart activist investors target America's underperforming banks - CNBC |
| 2026-01-29 | +2.2% | earnings | Finviz | The Top 5 Analyst Questions From Columbia Banking System's Q4 Earnings Call - Finviz |
| 2026-02-10 | -2.1% | news | Yahoo Finance | 3 Stocks Estimated To Be Up To 49.8% Below Intrinsic Value - Yahoo Finance |
| 2021-10-29 | +2.1% | legal | SEC EDGAR | COLB 8-K: 2.02 and (SEC Filing) |
| 2025-10-29 | -2.0% | earnings | Seeking Alpha | Columbia Banking System Q3 2025 Earnings Preview |
| 2025-08-28 | -1.7% | news | Seeking Alpha | Columbia Banking: A Growing Bank In The Pacific Northwest, With Regional Brand Penetration |
| 2025-08-28 | -1.7% | news | Seeking Alpha | Columbia Banking: A Growing Bank In The Pacific Northwest, With Regional Brand Penetration - Seeking Alpha |
| 2026-03-19 | +1.7% | earnings | Yahoo Finance | Columbia Banking System (COLB): Buy, Sell, or Hold Post Q4 Earnings? - Yahoo Finance |
| 2026-03-19 | +1.7% | earnings | FinancialContent | Columbia Banking System (COLB): Buy, Sell, or Hold Post Q4 Earnings? - FinancialContent |
| 2025-12-18 | -1.7% | analyst | Seeking Alpha | Columbia Banking: Likely On Pause For The Near Term (Downgrade) |
| 2025-05-16 | -1.7% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2024-11-04 | -1.7% | news | Morningstar | 10 Top-Performing Dividend Stocks of October 2024 - Morningstar |
| 2025-12-11 | +1.5% | news | StockStory | 1 Volatile Stock for Long-Term Investors and 2 We Turn Down - StockStory |
| 2023-10-18 | -1.5% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-10-14 | +1.4% | news | StockStory | First Commonwealth Financial, Frost Bank, Community Bank, Columbia Banking System, and Cathay General Bancorp Stocks Trade Up, What You Need To Know - StockStory |
| 2025-07-24 | +1.3% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2026-04-22 | +1.3% | earnings | Seeking Alpha | Columbia Banking System Q1 2026 Earnings Preview |
| 2026-04-22 | +1.3% | earnings | Yahoo Finance | Columbia Banking System (COLB) Q1 Earnings Report Preview: What To Look For - Yahoo Finance |
| 2025-04-23 | -1.3% | legal | SEC EDGAR | COLB 8-K: 7.01, 8.01 (SEC Filing) |
| 2025-04-23 | -1.3% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-04-23 | -1.3% | M&A | Reuters | Columbia Banking to acquire Pacific Premier in a $2 billion deal - Reuters |
| 2025-08-15 | -1.2% | news | Seeking Alpha | Columbia Banking System declares $0.36 dividend |
| 2025-08-15 | -1.2% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2021-10-15 | +1.2% | legal | SEC EDGAR | COLB 8-K: 1.01, 5.02 (SEC Filing) |
| 2025-11-28 | -1.1% | news | Yahoo Finance | 3 Bank Stocks With Solid Dividend Yield to Keep an Eye On - Yahoo Finance |
| 2024-04-25 | -1.0% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-07-26 | -1.0% | earnings | Yahoo Finance | Columbia Banking (COLB) Jumps 6.3% as Investors Cheer Q2 Income - Yahoo Finance |
| 2025-02-14 | +1.0% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2025-06-15 | -1.0% | news | StockStory | 1 Small-Cap Stock to Research Further and 2 to Avoid - StockStory |
| 2026-04-20 | -1.0% | analyst | Seeking Alpha | Columbia Banking System: The Picture Has Changed (Rating Upgrade) |
| 2026-04-20 | -1.0% | analyst | Seeking Alpha | Columbia Banking System: The Picture Has Changed (Rating Upgrade) - Seeking Alpha |
| 2026-04-20 | -1.0% | news | Yahoo Finance | Is Columbia Banking Attractive Now With Dividend Yield and Buybacks? - Yahoo Finance |
| 2024-11-15 | -1.0% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2025-10-24 | +0.8% | news | StockStory | First Hawaiian Bank, Coastal Financial, 1st Source, Peoples Bancorp, and Columbia Banking System Stocks Trade Up, What You Need To Know - StockStory |
| 2025-07-11 | -0.8% | legal | SEC EDGAR | COLB 8-K: 8.01 (SEC Filing) |
| 2021-09-30 | +0.7% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2025-12-16 | +0.7% | news | StockStory | 3 Reasons to Avoid COLB and 1 Stock to Buy Instead - StockStory |
| 2025-12-16 | +0.7% | news | Yahoo Finance | COLB Stock Rallies 33% in 6 Months: Can It Sustain the Momentum? - Yahoo Finance |
| 2026-04-03 | +0.6% | earnings | Yahoo Finance | Reflecting On Regional Banks Stocks’ Q4 Earnings: Columbia Banking System (NASDAQ:COLB) - Yahoo Finance |
| 2025-11-04 | -0.6% | legal | SEC EDGAR | COLB 8-K: 5.02, 7.01 (SEC Filing) |
| 2026-01-26 | -0.6% | earnings | Seeking Alpha | Columbia Banking: After Q4 Results, More Reasons To Buy As Western Growth Continues |
| 2026-01-26 | -0.6% | earnings | Seeking Alpha | Columbia Banking: After Q4 Results, More Reasons To Buy As Western Growth Continues - Seeking Alpha |
| 2025-08-17 | +0.5% | news | Yahoo Finance | 2 Reasons to Avoid COLB and 1 Stock to Buy Instead - Yahoo Finance |
| 2023-01-06 | +0.5% | legal | SEC EDGAR | COLB 8-K: 5.02 (SEC Filing) |
| 2021-04-30 | +0.5% | legal | SEC EDGAR | COLB 8-K: 2.02, 8.01 (SEC Filing) |
| 2024-05-11 | -0.5% | earnings | MarketBeat | Columbia Banking System (COLB) Stock Forecast and Price Target 2026 - MarketBeat |
| 2024-08-12 | -0.5% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2025-12-24 | -0.4% | news | Yahoo Finance | 3 Bank Stocks With High Dividend Yield to Keep an Eye On - Yahoo Finance |
| 2025-09-02 | -0.4% | legal | SEC EDGAR | COLB 8-K: 2.01, 5.02, 7.01 (SEC Filing) |
| 2021-07-29 | +0.4% | legal | SEC EDGAR | COLB 8-K: 2.02, 8.01 (SEC Filing) |
| 2026-04-23 | +0.4% | earnings | Motley Fool | Columbia (COLB) Q1 2026 Earnings Call Transcript |
| 2026-04-23 | +0.4% | earnings | MarketBeat | Columbia Banking System Q1 Earnings Call Highlights |
| 2026-04-23 | +0.4% | earnings | Zacks | Columbia Banking (COLB) Reports Q1 Earnings: What Key Metrics Have to Say |
| 2026-04-23 | +0.4% | earnings | Seeking Alpha | Columbia Banking System Non-GAAP EPS of $0.72 beats by $0.03, revenue of $677M in-line |
| 2026-04-23 | +0.4% | legal | SEC EDGAR | COLB 8-K: 2.02, 7.01 (SEC Filing) |
| 2026-04-23 | +0.4% | earnings | Yahoo Finance | Columbia Banking System Q1 Earnings Call Highlights - Yahoo Finance |
| 2026-04-23 | +0.4% | earnings | Investing.com | Earnings call transcript: Columbia Banking System Q1 2026 results show strong EPS beat - Investing.com |
| 2026-04-23 | +0.4% | earnings | marketscreener.com | Columbia Banking: Q1 Earnings Snapshot - marketscreener.com |
| 2026-04-23 | +0.4% | earnings | Yahoo Finance | Columbia Banking System (NASDAQ:COLB) Posts Q1 CY2026 Sales In Line With Estimates - Yahoo Finance |
| 2026-04-23 | +0.4% | earnings | MarketBeat | Columbia Banking System (NASDAQ:COLB) Releases Earnings Results, Beats Estimates By $0.04 EPS - MarketBeat |
| 2026-03-11 | -0.4% | news | Seeking Alpha | Columbia Banking System, Inc. (COLB) Presents at RBC Capital Markets Global Financial Institutions Conference 2026 Transcript |
| 2021-12-29 | +0.3% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2022-10-06 | -0.3% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2024-05-09 | -0.3% | legal | SEC EDGAR | COLB 8-K: 5.02, 5.07 (SEC Filing) |
| 2026-03-26 | +0.2% | news | Yahoo Finance | Columbia Banking System And 2 Other Leading Dividend Stocks - Yahoo Finance |
| 2025-12-05 | +0.2% | M&A | Yahoo Finance | Columbia Banking System's Post-Merger Playbook for 2026 - Yahoo Finance |
| 2025-09-10 | +0.1% | news | Seeking Alpha | Columbia Banking System, Inc. (COLB) Presents At Barclays 23rd Annual Global Financial Services Conference Transcript |
| 2025-12-25 | -0.1% | analyst | Yahoo Finance | The Zacks Analyst Blog Truist Financial, Columbia Banking System and Columbia Banking System - Yahoo Finance |
| 2021-06-24 | -0.1% | legal | SEC EDGAR | COLB 8-K: 1.01, 7.01 (SEC Filing) |
| 2025-07-21 | -0.1% | M&A | PR Newswire | Columbia Banking System and Pacific Premier Bancorp Announce Shareholder and Stockholder Approval for Proposed Acquisition - PR Newswire |
| 2024-05-13 | -0.1% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2026-02-13 | -0.1% | news | Seeking Alpha | Columbia Banking System declares $0.37 dividend |
| 2026-02-13 | -0.1% | legal | SEC EDGAR | COLB 8-K: 8.01 and (SEC Filing) |
| 2026-03-12 | +0.1% | news | Yahoo Finance | Is Columbia Banking Stock a Capital Return Play for 2026? - Yahoo Finance |
| 2026-04-26 | — | earnings | Simply Wall St. | Does Strong Q1 Results and Pacific Premier Synergies Change The Bull Case For Columbia (COLB)? |
| 2026-04-26 | — | earnings | MarketBeat | Universal Beteiligungs und Servicegesellschaft mbH Acquires 106,280 Shares of Columbia Banking System, Inc. $COLB - MarketBeat |
| 2026-04-25 | — | news | StockStory | 1 Unpopular Stock That Should Get More Attention and 2 We Brush Off |
| 2026-04-25 | — | earnings | Seeking Alpha | Columbia Banking System, Inc. 2026 Q1 - Results - Earnings Call Presentation |
| 2026-04-25 | — | M&A | Seeking Alpha | Columbia Banking: A West Coast Regional Player Growing Through Acquisition And Lending |
| 2026-04-25 | — | earnings | Seeking Alpha | Columbia Banking System, Inc. 2026 Q1 - Results - Earnings Call Presentation (NASDAQ:COLB) 2026-04-25 - Seeking Alpha |
| 2026-04-25 | — | earnings | MarketBeat | Columbia Banking System, Inc. (NASDAQ:COLB) Receives Average Rating of "Hold" from Analysts - MarketBeat |
| 2026-04-25 | — | earnings | MarketBeat | Columbia Banking System (NASDAQ:COLB) Cut to Hold at Wall Street Zen - MarketBeat |
| 2026-04-25 | — | M&A | Seeking Alpha | Columbia Banking: West Coast Regional Player Growing Through Acquisition & Lending (COLB) - Seeking Alpha |
| 2026-04-24 | — | earnings | StockStory | COLB Q1 Deep Dive: Loan Mix Shift, Integration Synergies, and Deposit Growth Define Results |
| 2026-04-24 | — | earnings | Zacks | COLB Q1 Earnings Beat on Y/Y Rise in NII & Fee Income |
| 2026-04-24 | — | earnings | Moby | Columbia Banking System, Inc. Q1 2026 Earnings Call Summary |
| 2026-04-24 | — | news | Simply Wall St. | Dividend Stocks To Consider In April 2026 |
| 2026-04-24 | — | earnings | GuruFocus.com | Columbia Banking System Inc (COLB) Q1 2026 Earnings Call Highlights: Strong Loan Growth and ... |
| 2026-04-24 | — | earnings | Seeking Alpha | Columbia Banking System expects net interest margin to cross 4% in Q2 while guiding $150M-$200M quarterly buybacks |
| 2026-04-24 | — | earnings | Seeking Alpha | Columbia Banking System, Inc. (COLB) Q1 2026 Earnings Call Transcript |
| 2026-04-24 | — | earnings | simplywall.st | How Investors May Respond To Columbia Banking System (COLB) Stronger Q1 2026 Earnings And Service Awards - simplywall.st |
| 2026-04-24 | — | earnings | StockStory | COLB Q1 Deep Dive: Loan Mix Shift, Integration Synergies, and Deposit Growth Define Results - StockStory |
| 2026-04-24 | — | earnings | MarketBeat | Columbia Banking System, Inc. $COLB Stake Increased by Evergreen Capital Management LLC - MarketBeat |