Necip Sayiner is President at SILICON LABORATORIES INC (SLAB). They have made 37 open-market trades across 6 companies since 2006, most recently 2026-06-03.
CIK 0001338515
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.
2 open-market purchases totalling $653K since 2015, against 35 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SLAB | 201,195 | $44.5M |
| ISIL | 688,320 | $15.5M |
| SNDK | 2,900 | $3.8M |
| RMBS | 18,223 | $1.6M |
| TER | 2,800 | $910K |
| ACLS | 7,112 | $771K |
| POWI | 4,500 | $200K |
| Total | $67.2M |
Shares reported on the most recent Form 4, priced at the 2026-06-04 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 |
|---|---|---|---|---|---|---|---|---|
| ACLS | SELL | 2026-06-03 | 2026-06-04 | $157.44 | $250K | +13.9% | -9.7% | -28.6% |
| RMBS | SELL | 2026-06-03 | 2026-06-03 | $170.15 | $851K | -11.8% | -30.3% | -48.0% |
| SNDK | SELL | 2026-05-08 | 2026-05-11 | $1503.11 | $870K | +3.4% | +10.0% | -17.0% |
| RMBS | SELL | 2026-05-08 | 2026-05-11 | $130.18 | $1.3M | +10.4% | +7.4% | -25.4% |
| SNDK | SELL | 2025-12-03 | 2025-12-04 | $195.14 | $496K | -1.5% | +29.0% | +182.0% |
| RMBS | SELL | 2025-09-11 | 2025-09-12 | $85.63 | $642K | +14.3% | +10.1% | +20.3% |
| RMBS | SELL | 2025-08-08 | 2025-08-11 | $73.53 | $551K | -3.9% | +5.2% | +50.9% |
| RMBS | SELL | 2025-02-19 | 2025-02-19 | $66.74 | $617K | -20.1% | -14.3% | -15.9% |
| RMBS | SELL | 2023-11-06 | 2023-11-07 | $57.43 | $574K | +13.8% | +11.2% | +17.5% |
| POWI | SELL | 2023-05-26 | 2023-05-30 | $89.95 | $405K | +6.3% | +7.3% | -6.1% |
| POWI | SELL | 2023-02-14 | 2023-02-16 | $84.52 | $209K | +1.7% | +4.0% | -0.5% |
| RMBS | SELL | 2023-02-10 | 2023-02-13 | $45.53 | $262K | -3.2% | -6.8% | +12.6% |
| RMBS | SELL | 2022-11-15 | 2022-11-16 | $38.16 | $572K | +0.6% | +0.7% | +23.3% |
| POWI | SELL | 2021-08-25 | 2021-08-27 | $104.53 | $261K | -1.8% | -3.1% | -6.5% |
| POWI | SELL | 2020-08-04 | 2020-08-06 | $120.17 | $415K | -3.1% | -14.7% | +3.8% |
| ISIL | BUY | 2016-05-04 | 2016-05-04 | $11.61 | $255K | -0.4% | +11.9% | +24.3% |
| ISIL | BUY | 2015-09-10 | 2015-09-11 | $10.48 | $398K | -9.0% | +0.3% | +0.3% |
| SLAB | SELL · 10b5-1 | 2012-04-18 | 2012-04-20 | $41.88 | $144K | -10.3% | -1.2% | -1.2% |
| SLAB | SELL · 10b5-1 | 2012-03-21 | 2012-03-23 | $43.51 | $149K | -10.3% | -1.2% | -1.2% |
| SLAB | SELL · 10b5-1 | 2012-02-15 | 2012-02-17 | $45.00 | $155K | -10.3% | -1.2% | -1.2% |
| SLAB | SELL · 10b5-1 | 2012-01-24 | 2012-01-26 | $47.40 | $3.6M | -10.3% | -1.2% | -1.2% |
| SLAB | SELL · 10b5-1 | 2012-01-18 | 2012-01-20 | $44.74 | $1.5M | -10.3% | -1.2% | -1.2% |
| SLAB | SELL · 10b5-1 | 2011-04-27 | 2011-04-28 | $45.75 | $197K | -10.3% | -1.2% | -1.2% |
| SLAB | SELL · 10b5-1 | 2011-02-17 | 2011-02-22 | $46.74 | $100K | -10.3% | -1.2% | -1.2% |
| SLAB | SELL · 10b5-1 | 2011-01-20 | 2011-01-24 | $47.53 | $95K | -10.3% | -1.2% | -1.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.