InsidersTradesSigma
Total declarations
Companies
▲ Purchases (7 ops.)
▼ Sales (0 ops.)
Insider track record
ExecutiveDisclosed buys
7
Disclosed sells
0
T+90 hit rate
24%
T+90 mean return
-7.4%
Across 17 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Discover the complete record of transactions filed by BARUFFI KUMI YAMAMOTO, Directeur Juridique. Officer active across 2 companies, notably Columbia Banking System, INC.. In total, 27 filings have been logged. Breakdown: 7 buys · 0 sell. Total volume traded: €57k. History available since 6 July 2021. The latest transaction was disclosed on 13 March 2026 (Retenue fiscale). Regulator: SEC (Form 4). The full history is openly available.
Declarations27 total
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937 shares@ US$26.230.0003% mcap11.7% of flowCommon StockSEC:0000887343-26-000107:0
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937 shares@ US$26.230.0003% mcap11.7% of flowCommon StockSEC:0000887343-26-000107
632 shares0Common StockSEC:0000887343-26-000017
632 shares0Common StockSEC:0000887343-26-000017:0
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1,799 shares@ US$26.738.0% of flowCommon StockSEC:0000887343-25-000092:0
◆
1,012 shares@ US$27.414.6% of flowCommon StockSEC:0000887343-25-000026:0
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689 shares@ US$27.013.1% of flowCommon StockSEC:0000887343-25-000002:0
◆
13,710 shares@ US$17.8739.2% of flowCommon StockSEC:0000887343-24-000130:0
◆
673 shares@ US$19.012.1% of flowCommon StockSEC:0000887343-24-000060:0
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461 shares@ US$26.681.9% of flowCommon StockSEC:0000887343-24-000002:0
▲
854 shares@ US$18.252.5% of flowCommon StockSEC:0000887343-23-000286:0
Ideal exit: 26 Mar 2024 (T+270)
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507 shares@ US$20.811.7% of flowCommon StockSEC:0000887343-23-000202:0
1,020 shares0CommonSEC:0000887343-23-000094:0
1,456 shares0CommonSEC:0000887343-23-000068:0
859 shares@ US$32.054.4% of flowCommonSEC:0000887343-23-000022:0
232 shares@ US$26.841.0% of flowCommonSEC:0000887343-23-000005:0
Ideal exit: 26 Sept 2023 (T+270)
446 shares@ US$25.790.0001% mcap6.0% of flowCommonSEC:0000887343-22-000116:0
Ideal exit: 27 Mar 2023 (T+270)
188 shares@ US$34.070.0001% mcap3.2% of flowCommonSEC:0000887343-22-000080:0
1,592 shares@ US$32.720.0006% mcap26.3% of flowCommonSEC:0000887343-22-000067:0
289 shares@ US$36.630.0001% mcap5.2% of flowCommonSEC:0000887343-22-000050:0
600 shares@ US$36.750.0002% mcap36.2% of flowCommonSEC:0000887343-22-000021
600 shares@ US$36.750.0002% mcap10.7% of flowCommonSEC:0000887343-22-000021:0
186 shares@ US$29.450.0001% mcap9.0% of flowCommonSEC:0000887343-22-000003
Ideal exit: 1 Oct 2022 (T+270)
186 shares@ US$29.450.0001% mcap2.7% of flowCommonSEC:0000887343-22-000003:0
Ideal exit: 1 Oct 2022 (T+270)
304 shares@ US$31.641.4% of flowCommonSEC:0000887343-21-000141
Ideal exit: 2 Apr 2022 (T+270)
25 of 27 declarations
About BARUFFI KUMI YAMAMOTO
Kumi Yamamoto Baruffi is the Legal Director at Columbia Banking System, INC.
