William T. Weyerhaeuser, Director at COLUMBIA BANKING SYSTEM INC (COLB), bought 6,000 shares at $30.60 ($184K) on 2007-04-30, disclosed to the SEC on 2007-04-30.
Open-market purchase of $184k COLB by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.
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