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BL

Brock Lakely

COLB
SVP & CHIEF ACCOUNTING OFFICER · COLUMBIA BANKING SYSTEM, INC. · CIK 0001740374
FILING MIX · LIFETIME25%/75%
BUYS
6
SELLS
18
TOTAL VALUE
$417.4K
COMPANIES
1
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
10,708
AVG SELL PX
$33.61
TRADE KIND
SHOWING 24 / 24
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 3 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Brock Lakely, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d1+100.00%-0.34%-2.07%+1.73%+1.73%—
14d1+0.00%+1.79%-4.26%+6.05%+6.05%—
30d1+0.00%+11.17%+3.60%+7.58%+7.58%—
60d1+0.00%+10.90%+11.46%-0.56%-0.56%—
90d1+0.00%+13.15%+9.53%+3.62%+3.62%—
180d1(1 pending)——————
1y1(1 pending)——————
2y1(1 pending)——————
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
COLB · 10,708 shares · as of Apr 15, 2026
02,8295,6588,48611,315202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 6 buys / 18 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP, Chief Accounting Officer
396$29.10$11.5K10,708Apr 15, 2026Apr 16, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP, Chief Accounting Officer
846——9,810Mar 13, 2026Mar 17, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
EVP, Chief Accounting Officer
846$26.23$22.2K11,315Mar 13, 2026Mar 17, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP, Chief Accounting Officer
211$26.23$5.5K11,104Mar 13, 2026Mar 17, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP, Chief Accounting Officer
211$26.23$5.5K11,104Mar 13, 2026Mar 20, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP, Chief Accounting Officer
391$28.45$11.1K10,469Mar 1, 2026Mar 2, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
5,601$31.24$175.0K10,656Feb 18, 2026Feb 20, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP Chief Accounting Officer
303$30.14$9.1K6,194Feb 27, 2023Mar 1, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP Chief Accounting Officer
164$32.05$5.3K7,699Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
660$32.05$21.2K7,521Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP Chief Accounting Officer
200$32.05$6.4K7,321Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
542$32.05$17.4K7,863Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
151$36.63$5.5K6,861Feb 28, 2022Mar 2, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
181$36.97$6.7K7,012Feb 25, 2022Feb 28, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
164$36.75$6.0K7,193Feb 15, 2022Feb 17, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
199$36.75$7.3K7,357Feb 15, 2022Feb 17, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
210$44.29$9.3K7,556Feb 26, 2021Mar 2, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,627——7,766Feb 25, 2021Mar 1, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
105$45.93$4.8K6,139Feb 22, 2021Feb 24, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
204$43.09$8.8K6,244Feb 15, 2021Feb 17, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
60$33.20$2.0K6,448Feb 28, 2020Mar 2, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
2,000$34.35$68.7K6,508Feb 27, 2020Mar 2, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
149$37.48$5.6K4,508Feb 24, 2020Feb 25, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
SVP & Chief Accounting Officer
63$38.69$2.4K4,657Feb 21, 2020Feb 24, 2020 ↗View →
Other insiders · COLB
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About this filer
CIK 0001740374
ROLE
SVP & Chief Accounting Officer
PRIMARY
COLB
COMPANIES
1
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001740374DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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