Clint Stein is CEO & Chairman +1 at COLUMBIA BANKING SYSTEM, INC. (COLB). They have made 11 open-market trades across 1 company since 2017, most recently 2026-03-13.
CIK 0001550429
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
8 open-market purchases totalling $391K since 2018, against 3 sales. Across 8 scored buys the stock is down 7.8% at ninety days, and 9.9 points behind the S&P over the same stretch.
8 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| COLB | 151,584 | $4.3M |
Shares reported on the most recent Form 4, priced at the 2026-03-17 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 38% | 13% |
| Avg Move | +0.3% | -0.3% | -7.8% |
| Alpha | -1.9% | -3.2% | -9.9% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| COLB | BUY | 2024-01-30 | 2024-01-30 | $20.96 | $364K | -9.3% | -12.9% | -8.7% |
| COLB | BUY | 2021-01-07 | 2021-01-08 | $24.06 | $4K | +3.4% | +8.3% | +9.6% |
| COLB | BUY | 2020-07-02 | 2020-07-06 | $25.51 | $6K | +8.0% | +9.7% | -5.6% |
| COLB | BUY | 2020-01-03 | 2020-01-06 | $32.81 | $2K | -0.7% | +0.5% | -37.5% |
| COLB | BUY | 2019-07-01 | 2019-07-03 | $32.56 | $5K | -2.0% | -1.9% | -0.9% |
| COLB | SELL | 2019-02-22 | 2019-02-25 | $38.32 | $25K | -6.8% | -15.8% | -9.7% |
| COLB | BUY | 2019-01-02 | 2019-01-04 | $32.66 | $2K | +1.0% | -1.0% | -7.9% |
| COLB | BUY | 2018-07-05 | 2018-07-05 | $36.81 | $4K | -1.4% | -0.3% | -6.1% |
| COLB | SELL | 2018-03-09 | 2018-03-13 | $44.16 | $102K | -6.5% | -0.7% | -0.6% |
| COLB | BUY | 2018-01-08 | 2018-01-08 | $36.63 | $2K | +3.3% | -4.6% | -5.6% |
| COLB | SELL | 2017-06-15 | 2017-06-16 | $40.09 | $321K | -2.8% | -2.8% | -6.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.