Transactions
1
Insider / COLUMBIA BANKING SYSTEM, INC.
Finkelstein Mark A
Director at COLUMBIA BANKING SYSTEM, INC.
Finkelstein Mark A, Director at COLUMBIA BANKING SYSTEM, INC., has disclosed 1 transaction in COLB since May 18, 2026: 0 purchases (0 open-market buys) and 0 sales, worth about $0 at the reported prices. The latest was filed May 18, 2026, 4 days after the trade.
Open-market buys
0
Sales
0
Avg. disclosure lag
4.0d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Finkelstein Mark A reported 1 transaction that was neither a purchase nor a sale, such as stock awards, option exercises or shares withheld for tax.
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| A | Grant or award | 1 | 3,949 | — |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 1 | 0 | 0 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| COLB | Other A | May 14, 2026 | May 18, 2026 | 4d | 3,949 | — | — | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| May 18, 2026 | Form 4 | 0001537873-26-000002 | 1 | published | EDGAR ↗ |
Other insiders at COLUMBIA BANKING SYSTEM, INC.
- SCHULTZ JOHN F Director 23 rows
- Stein Clint Chair, President, CEO 14 rows
- Moore Devine David EVP Chief Marketing Officer 12 rows
- Nixon Torran B Senior Executive VP 12 rows
- Deer Aaron James EVP Chief Strategy/Innov Offcr 11 rows
- OGNALL ANDREW H EVP Chief Risk Officer 11 rows
- Anderson Drew K EVP Chief Admin Officer 10 rows
- BARUFFI KUMI YAMAMOTO EVP General Counsel, Corp Sec 10 rows
- Merrywell Christopher Senior Executive VP 10 rows
- Namdar Frank EVP Chief Credit Officer 10 rows
Everyone on file, with contracts and lobbying under the company's name: COLUMBIA BANKING SYSTEM, INC..
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 1 | 1 | May 18, 2026 | May 18, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.