Anderson Drew K 4

What Happened

• Drew K. Anderson, EVP & Chief Administrative Officer of Columbia Banking System (COLB), had 2,506 restricted stock units convert into common shares upon vesting on March 13, 2026. The conversion is reported at $26.23 per share, a gross value of $65,732.
• To cover tax withholding, 1,215 of those shares were surrendered (disposed) at the same per-share value (tax withholding value $31,869), leaving a net of 1,291 newly issued shares retained by Anderson. This was a vesting/issuance event (not an open-market buy or sell).

Key Details

• Transaction date: March 13, 2026; Form 4 filed March 17, 2026 (filed within the typical two-business-day deadline).
• Conversion: 2,506 RSUs → 2,506 common shares at $26.23/share (total $65,732).
• Tax withholding: 1,215 shares withheld/disposed to satisfy tax obligations (value $31,869).
• Net shares received: 1,291 common shares.
• Footnote: The RSUs were originally granted on February 25, 2025 (7,518 RSUs) and vest in three annual installments beginning March 13, 2026 — this appears to be the first installment (7,518 / 3 = 2,506).
• Transaction codes: M = exercise/conversion of derivative security (RSU vesting); F = tax withholding/disposition.

Context

• This was a routine vesting of restricted stock units and a tax-withholding disposition (common practice). It is not a market purchase or a sell that signals trading intent.
• For retail investors, such awards reflect executive compensation vesting rather than an active bullish or bearish trade by the insider.