Seda Ivan A 4

What Happened

• Ivan A. Seda, Chief Financial Officer of Columbia Banking System, Inc. (COLB), was granted 12,804 restricted stock units (RSUs) on February 18, 2026.
• The grant is reported at $31.24 per share for an aggregate value of $399,997. This was an award/grant (derivative transaction), not an open-market purchase or sale.

Key Details

• Transaction date: 2026-02-18; Filing date: 2026-02-20 (filed within the normal two-business-day Form 4 window).
• Shares/units granted: 12,804 RSUs at $31.24 per unit; aggregate reported value $399,997.
• Vesting: The RSUs vest 33.33% per year over three years (footnote F1).
• Shares owned after the transaction: Not specified in this filing.
• Transaction type: Award/Grant of derivative securities (code A). No 10b5-1 plan or tax-withholding note was reported in the filing.

Context

• RSUs are a form of compensation that convert into actual shares only after vesting; they are not immediately tradable and do not represent a cash purchase by the insider. Such grants are common as executive compensation and should be interpreted as compensation, not a direct market vote by the insider.