Kumi Yamamoto Baruffi

Companies

• COLUMBIA BANKING SYSTEM, INC.General counsel Dec 2, 2014 to now¹
• COLUMBIA BANKING SYSTEM, INC.Officer Sep 25, 2014 to Sep 25, 2014²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• CBCOLUMBIA BANKING SYSTEM, INC. COLB53,715 shares³$1.5M at $28.57Mar 13, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Mar 13, 2026Sold 937 shares at $26.23 of COLUMBIA BANKING SYSTEM, INC.⁴
• Mar 13, 2026Shares withheld for tax 937 shares at $26.23 of COLUMBIA BANKING SYSTEM, INC.³
• Mar 13, 2026Exercised options 2,381 shares at $26.23 of COLUMBIA BANKING SYSTEM, INC.⁴
• Mar 1, 2026Shares withheld for tax 1,799 shares at $28.45 of COLUMBIA BANKING SYSTEM, INC.⁵
• Feb 15, 2026Shares withheld for tax 1,036 shares at $31.49 of COLUMBIA BANKING SYSTEM, INC.⁶
• Feb 2, 2026Shares withheld for tax 2,110 shares at $29.69 of COLUMBIA BANKING SYSTEM, INC.⁷
• Feb 2, 2026Granted 5,093 shares at $29.69 of COLUMBIA BANKING SYSTEM, INC.⁷
• Jan 20, 2026Shares withheld for tax 1,508 shares at $28.35 of COLUMBIA BANKING SYSTEM, INC.⁸
• Jan 20, 2026Returned to company 632 shares of COLUMBIA BANKING SYSTEM, INC.⁸
• Feb 28, 2025Shares withheld for tax 1,799 shares at $26.73 of COLUMBIA BANKING SYSTEM, INC.⁹
• Feb 14, 2025Shares withheld for tax 1,031 shares at $27.41 of COLUMBIA BANKING SYSTEM, INC.¹⁰
• Feb 14, 2025Shares withheld for tax 442 shares at $27.41 of COLUMBIA BANKING SYSTEM, INC.¹⁰
• Feb 14, 2025Granted 1,012 shares at $27.41 of COLUMBIA BANKING SYSTEM, INC.¹⁰
• Jan 1, 2025Shares withheld for tax 772 shares at $27.01 of COLUMBIA BANKING SYSTEM, INC.¹¹
• Jan 1, 2025Shares withheld for tax 689 shares at $27.01 of COLUMBIA BANKING SYSTEM, INC.¹¹
• Mar 1, 2024Granted 13,710 shares at $17.87 of COLUMBIA BANKING SYSTEM, INC.¹²
• Feb 15, 2024Granted 1,012 shares at $19.01 of COLUMBIA BANKING SYSTEM, INC.¹³
• Feb 15, 2024Granted 673 shares at $19.01 of COLUMBIA BANKING SYSTEM, INC.¹³
• Jan 1, 2024Shares withheld for tax 461 shares at $26.68 of COLUMBIA BANKING SYSTEM, INC.¹⁴
• Jan 1, 2024Shares withheld for tax 461 shares at $26.68 of COLUMBIA BANKING SYSTEM, INC.¹⁴
• Jun 30, 2023Bought 854 shares at $18.25 of COLUMBIA BANKING SYSTEM, INC.¹⁵
• Mar 27, 2023Shares withheld for tax 507 shares at $20.81 of COLUMBIA BANKING SYSTEM, INC.¹⁶
• Feb 28, 2023Granted 1,520 shares of COLUMBIA BANKING SYSTEM, INC.¹⁷
• Feb 28, 2023Granted 1,702 shares of COLUMBIA BANKING SYSTEM, INC.¹⁷
• Feb 28, 2023Granted 1,020 shares of COLUMBIA BANKING SYSTEM, INC.¹⁷