Luis A. Muller is CEO & President at COHU INC (COHU). They have made 10 open-market trades across 1 company since 2017, most recently 2026-10-02.
CIK 0001509513
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.
1 open-market purchase totalling $100K since 2021, against 9 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| COHU | 822,927 | $41.8M |
| RAL | 10,389 | $691K |
| Total | $42.5M |
Shares reported on the most recent Form 4, priced at the 2026-10-05 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| COHU | SELL · 10b5-1 | 2026-10-02 | 2026-10-05 | $73.00 | $1.6M | -26.6% | — | — |
| COHU | SELL · 10b5-1 | 2026-09-25 | 2026-09-25 | $65.00 | $1.8M | +6.8% | — | — |
| COHU | SELL · 10b5-1 | 2026-09-21 | 2026-09-21 | $60.00 | $3.3M | +18.4% | — | — |
| COHU | SELL | 2026-05-22 | 2026-05-26 | $46.62 | $2.1M | -3.4% | +30.8% | -0.5% |
| COHU | BUY | 2021-08-13 | 2021-08-13 | $31.22 | $100K | +2.2% | +10.8% | +14.9% |
| COHU | SELL | 2020-12-03 | 2020-12-07 | $34.63 | $2.1M | -0.6% | +11.4% | +1.1% |
| COHU | SELL | 2020-12-01 | 2020-12-02 | $29.70 | $653K | +13.0% | +24.4% | +39.6% |
| COHU | SELL | 2020-11-16 | 2020-11-18 | $28.17 | $423K | +5.5% | +36.1% | +77.1% |
| COHU | SELL | 2020-11-12 | 2020-11-16 | $25.90 | $207K | +1.0% | +33.6% | +78.5% |
| COHU | SELL | 2017-05-05 | 2017-05-05 | $19.04 | $395K | -3.9% | +1.0% | -6.9% |
| COHU | SELL | 2017-05-04 | 2017-05-05 | $19.62 | $99K | -3.9% | +1.0% | -6.9% |
| COHU | SELL | 2017-05-03 | 2017-05-05 | $19.34 | $2.3M | -3.9% | +1.0% | -6.9% |
| COHU | SELL | 2017-05-02 | 2017-05-04 | $20.21 | $1.8M | -3.0% | -3.3% | -10.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.