Kumi Yamamoto Baruffi

This profile gathers the share dealings of Kumi Yamamoto Baruffi in Columbia Banking System, Inc., where the filings describe the role as senior executive. Over a trading history stretching from 14 January 2016 to 13 March 2026, the count stands at 26 filings.

On the market, this insider has only ever bought: 5 purchases, €44k in total. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Other entries cover 19 share grants and 1 option exercise.

In size, the median ticket on the buying side is €8,134. 5 out of 5 purchases came within 30 days of a purchase by at least one other insider of the same company. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase. Looking at 5 purchases old enough to measure, the stock rose over the following 90 days in 20% of cases; the median change was -5.2%. Past outcomes like these are no guarantee of what comes next.

Most recently, on 20 March 2026, the filings show a share grant worth €21k in Columbia Banking System, Inc. The latest purchase dates back some time: it was published 1,206 days ago, on 5 July 2023. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. The legal deadline for a Form 4 is two business days after the transaction. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.