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KB

Kumi Yamamoto Baruffi

COLB
EVP GENERAL COUNSEL, CORP SEC · COLUMBIA BANKING SYSTEM, INC. · CIK 0001619728
FILING MIX · LIFETIME54%/46%
BUYS
37
SELLS
31
TOTAL VALUE
$2.32M
COMPANIES
1
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
13,083
AVG SELL PX
$29.69
TRADE KIND
SHOWING 68 / 68
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
8 backtested trades · 8 horizons · 3 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Kumi Yamamoto Baruffi, 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
7d8+50.00%+0.56%+0.38%+0.18%-1.79%—
14d8+37.50%+1.16%+0.29%+0.87%+0.06%—
30d8+50.00%+3.20%+2.56%+0.64%-0.85%—
60d8+50.00%+3.72%+2.83%+0.89%-2.89%—
90d8+37.50%-6.04%+0.41%-6.45%-1.42%—
180d8(1 pending)+28.57%-7.76%+5.81%-13.58%-17.91%—
1y8(1 pending)+14.29%-5.29%+14.39%-19.68%-25.84%—
2y8(1 pending)+14.29%-16.68%+28.07%-44.76%-46.81%—
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 · 13,083 shares · as of Mar 13, 2026
014,49628,99243,48857,984202120222023202420252026SHARES 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
FLOW · 37 buys / 31 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel, Corp Sec
937$26.23$24.6K53,715Mar 13, 2026Mar 17, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel, Corp Sec
937$26.23$24.6K53,715Mar 13, 2026Mar 20, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
EVP General Counsel, Corp Sec
2,381$26.23$62.5K54,652Mar 13, 2026Mar 17, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel, Corp Sec
2,381——13,083Mar 13, 2026Mar 17, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel, Corp Sec
1,799$28.45$51.2K52,271Mar 1, 2026Mar 2, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
8,322$31.24$260.0K15,464Feb 18, 2026Feb 20, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel, Corp Sec
1,036$31.49$32.6K54,070Feb 15, 2026Feb 18, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel, Corp Sec
2,110$29.69$62.6K55,106Feb 2, 2026Feb 4, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
5,093$29.69$151.2K57,216Feb 2, 2026Feb 4, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel, Corp Sec
1,508$28.35$42.8K52,123Jan 20, 2026Jan 22, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel, Corp Sec
632——53,631Jan 20, 2026Jan 22, 2026 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
General Counsel, Corporate Sec
1,799$26.73$48.1K54,263Feb 28, 2025Mar 4, 2025 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
3,571$26.60$95.0K20,852Feb 25, 2025Feb 26, 2025 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
7,142$26.60$190.0K7,142Feb 25, 2025Feb 26, 2025 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
3,571$26.60$95.0K17,281Feb 25, 2025Feb 26, 2025 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
General Counsel, Corporate Sec
1,031$27.41$28.3K56,062Feb 14, 2025Feb 18, 2025 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,012$27.41$27.7K57,535Feb 14, 2025Feb 18, 2025 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
General Counsel, Corporate Sec
442$27.41$12.1K57,093Feb 14, 2025Feb 18, 2025 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
General Counsel, Corporate Sec
689$27.01$18.6K57,295Jan 1, 2025Jan 3, 2025 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
General Counsel, Corporate Sec
772$27.01$20.9K56,523Jan 1, 2025Jan 3, 2025 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
6,855$17.87$122.5K13,710Mar 1, 2024Mar 4, 2024 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
13,710$17.87$245.0K57,984Mar 1, 2024Mar 4, 2024 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
6,855$17.87$122.5K6,855Mar 1, 2024Mar 4, 2024 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
673$19.01$12.8K43,262Feb 15, 2024Feb 20, 2024 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,012$19.01$19.2K44,274Feb 15, 2024Feb 20, 2024 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
General Counsel, Corporate Sec
461$26.68$12.3K43,050Jan 1, 2024Jan 3, 2024 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
General Counsel, Corporate Sec
461$26.68$12.3K42,589Jan 1, 2024Jan 3, 2024 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
General Counsel, Corporate Sec
854$18.25$15.6K43,511Jun 30, 2023Jul 5, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
General Counsel, Corporate Sec
507$20.81$10.6K42,657Mar 27, 2023Mar 29, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,020——38,922Feb 28, 2023Mar 2, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,520——43,164Feb 28, 2023Mar 2, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,020——39,942Feb 28, 2023Mar 2, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,702——41,644Feb 28, 2023Mar 2, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
3,948——37,901Feb 21, 2023Feb 23, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
7,898——33,953Feb 21, 2023Feb 23, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,456——26,664Feb 21, 2023Feb 23, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel
609$30.77$18.7K26,055Feb 21, 2023Feb 23, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,012$32.05$32.4K25,666Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel
458$32.05$14.7K25,208Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel
389$32.05$12.5K24,286Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
673$32.05$21.6K24,959Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP General Counsel
305$32.05$9.8K24,654Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
859$32.05$27.5K24,675Feb 15, 2023Feb 17, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
EVP General Counsel
232$26.84$6.2K23,816Dec 30, 2022Jan 4, 2023 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
EVP and General Counsel
446$25.79$11.5K23,584Jun 30, 2022Jul 1, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
188$34.07$6.4K23,138Mar 25, 2022Mar 29, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,592$32.72$52.1K23,711Mar 7, 2022Mar 9, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
385$32.72$12.6K23,326Mar 7, 2022Mar 9, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
289$36.63$10.6K22,119Feb 28, 2022Mar 2, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
470$36.75$17.3K22,408Feb 15, 2022Feb 17, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
600$36.75$22.1K21,938Feb 15, 2022Feb 17, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
EVP and General Counsel
186$29.45$5.5K21,338Jan 4, 2022Jan 5, 2022 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
EVP and General Counsel
304$31.64$9.6K21,152Jul 6, 2021Jul 6, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
126$45.11$5.7K20,848Mar 26, 2021Mar 30, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
2,360——21,550Mar 18, 2021Mar 19, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
576$35.90$20.7K20,974Mar 18, 2021Mar 19, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
161$44.29$7.1K19,190Feb 26, 2021Mar 2, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
255$45.93$11.7K19,351Feb 22, 2021Feb 24, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
621$43.09$26.8K19,606Feb 15, 2021Feb 17, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
EVP and General Counsel
219$24.06$5.3K18,985Jan 7, 2021Jan 8, 2021 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
EVP and General Counsel
337$25.51$8.6K18,766Jul 2, 2020Jul 6, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
114$33.20$3.8K18,888Feb 28, 2020Mar 3, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,955——19,002Feb 27, 2020Mar 2, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
459$40.69$18.7K18,429Feb 27, 2020Mar 12, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASEGRANT
Stock grant
1,955$40.69$79.5K19,002Feb 27, 2020Mar 12, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
320$37.48$12.0K17,047Feb 24, 2020Feb 25, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
SALE
EVP and General Counsel
152$38.69$5.9K17,367Feb 21, 2020Feb 24, 2020 ↗View →
COLB
COLUMBIA BANKING SYSTEM, INC.
PURCHASE
EVP and General Counsel
137$32.81$4.5K17,519Jan 3, 2020Jan 6, 2020 ↗View →
Other insiders · COLB
Loading peer insiders…
About this filer
CIK 0001619728
ROLE
EVP General Counsel, Corp Sec
PRIMARY
COLB
COMPANIES
1
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001619728DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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