Lewis Chew is CFO & VP at Dolby Laboratories, Inc. (DLB). They have made 29 open-market trades across 2 companies since 2007, most recently 2026-08-20.
CIK 0001224994
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.
0 open-market purchases totalling $209K since 2012, against 29 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DLB | SELL | 2021-08-17 | 2021-08-18 | $99.93 | $5.0M | +2.7% | -3.4% | -7.9% |
| DLB | SELL | 2021-08-05 | 2021-08-09 | $97.69 | $7.3M | -0.4% | -3.6% | -8.1% |
| DLB | SELL | 2021-08-03 | 2021-08-05 | $98.37 | $8.9M | +1.5% | -3.5% | -7.9% |
| DLB | SELL | 2021-05-20 | 2021-05-20 | $96.67 | $6.0M | -1.4% | +1.8% | +0.4% |
| DLB | SELL | 2021-02-02 | 2021-02-04 | $90.82 | $2.7M | +2.5% | +7.0% | +5.2% |
| DLB | SELL | 2020-11-17 | 2020-11-18 | $89.41 | $4.9M | +2.3% | +5.9% | +8.3% |
| DLB | SELL | 2020-08-05 | 2020-08-06 | $69.79 | $2.5M | +0.4% | -6.8% | +17.2% |
| DLB | SELL | 2020-05-13 | 2020-05-14 | $54.79 | $548K | +15.0% | +20.5% | +32.8% |
| DLB | SELL | 2020-02-07 | 2020-02-10 | $71.01 | $2.7M | +2.2% | -15.2% | -18.5% |
| DLB | SELL | 2019-11-25 | 2019-11-26 | $69.21 | $2.2M | -3.4% | -1.4% | +1.9% |
| DLB | SELL | 2019-11-25 | 2019-11-26 | $69.20 | $2.4M | -3.4% | -1.4% | +1.9% |
| DLB | SELL | 2019-08-20 | 2019-08-22 | $60.33 | $905K | +0.1% | +2.8% | +14.9% |
| DLB | SELL | 2019-05-09 | 2019-05-09 | $63.41 | $2.2M | -1.9% | -1.1% | -7.9% |
| DLB | SELL | 2019-02-08 | 2019-02-12 | $63.28 | $2.2M | +1.9% | +0.4% | -1.5% |
| DLB | SELL | 2018-11-01 | 2018-11-05 | $69.44 | $4.8M | +2.0% | +0.7% | -5.3% |
| DLB | SELL | 2018-08-07 | 2018-08-09 | $65.47 | $1.1M | +5.8% | +8.9% | +6.7% |
| DLB | SELL | 2018-05-17 | 2018-05-17 | $62.58 | $1.1M | +0.0% | +4.8% | +8.5% |
| DLB | SELL | 2018-02-27 | 2018-03-01 | $63.15 | $1.1M | +5.8% | -2.1% | -1.6% |
| DLB | SELL | 2017-11-10 | 2017-11-13 | $59.55 | $1.0M | +5.4% | +2.3% | +4.0% |
| DLB | SELL | 2017-05-17 | 2017-05-17 | $50.34 | $720K | +2.0% | -1.4% | -0.9% |
| DLB | SELL | 2016-11-21 | 2016-11-22 | $46.85 | $703K | -2.1% | -2.0% | +5.6% |
| DLB | SELL | 2016-08-29 | 2016-08-31 | $49.79 | $597K | +0.3% | +11.0% | -4.6% |
| DLB | SELL | 2016-05-13 | 2016-05-17 | $45.49 | $910K | +5.2% | +5.4% | +11.4% |
| DLB | SELL | 2015-10-26 | 2015-10-27 | $34.80 | $293K | -6.2% | +0.3% | -6.5% |
| PCG | BUY | 2012-03-05 | 2012-03-07 | $41.88 | $209K | -1.1% | +0.2% | +0.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.