Moore Devine David 4

What Happened

• Moore Devine David, EVP & Chief Marketing Officer of Columbia Banking System (COLB), had 940 restricted stock units convert into 940 common shares on March 13, 2026 (recorded as an exercise/conversion of a derivative). The 940 shares were valued at $26.23 each for a gross value of $24,656.
• To cover tax withholding, 376 of those shares were surrendered (disposed) at the same per-share value, representing ~$9,862. Net shares retained by the insider from this vesting were 564 shares (net value ≈ $14,794).
• This is a routine RSU vesting/settlement (not an open‑market purchase or sale).

Key Details

• Transaction date: March 13, 2026; Filing date: March 17, 2026 (filed timely).
• Prices and amounts: 940 shares @ $26.23 (acquired; $24,656); 376 shares withheld @ $26.23 (disposed; $9,862). Also recorded: conversion of 940 derivative units @ $0.00 (derivative conversion entry).
• Net shares received: 564 shares (940 vested − 376 withheld).
• Footnote: F1 — These were Restricted Stock Units granted on February 25, 2025 (2,819 RSUs total), vesting in three annual installments beginning March 13, 2026.
• Transaction codes: M = exercise/conversion of derivative; F = tax withholding.

Context

• This was a vesting/settlement of RSUs (compensation), not an open‑market buy or sell. The withholding of shares to cover taxes is common and does not indicate an open‑market sale.
• The dollar amounts are modest (gross ~$24.7k; net value retained ≈ $14.8k), typical of routine equity compensation vesting rather than a major insider buy or divestiture.