Douglas Wells Brown is Director at DATA I/O CORP (DAIO). They have made 7 open-market trades across 1 company since 2012, most recently 2025-05-15.
CIK 0001517364
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.
3 open-market purchases totalling $36K since 2012, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DAIO | 101,759 | $267K |
Shares reported on the most recent Form 4, priced at the 2025-05-19 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DAIO | BUY | 2024-08-26 | 2024-08-29 | $2.66 | $8K | -7.3% | -1.2% | +3.5% |
| DAIO | SELL | 2021-09-09 | 2021-09-09 | $7.28 | $87K | -14.6% | -15.1% | -33.3% |
| DAIO | SELL | 2021-08-04 | 2021-08-04 | $6.47 | $35K | -8.6% | -8.6% | -15.0% |
| DAIO | SELL | 2021-06-04 | 2021-06-08 | $6.10 | $210K | +11.3% | -4.4% | +11.4% |
| DAIO | SELL | 2017-11-29 | 2017-12-01 | $13.09 | $184K | -2.4% | -5.1% | -36.9% |
| DAIO | BUY | 2012-12-14 | 2012-12-18 | $1.68 | $10K | -0.4% | +0.7% | +0.7% |
| DAIO | BUY | 2012-05-10 | 2012-05-10 | $2.77 | $18K | -0.4% | +0.7% | +0.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.