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Who

Lewis Chew

Director

Company insider

Files Form 4 as: Director, Arista Networks; Director, Cadence Design Systems; Director, Intuitive Surgical; EVP & Chief Financial Officer, Dolby Laboratories; Director, Pacific Gas & Electric Co; Senior Vice President and CFO, National Semiconductor.

In numbers

Trades disclosed
291
Buys
2
Sells
31
Bought
$209K
Sold
$49.4M
Companies
6
Companies where not an officer
4
First trade
18 Jul 2006
Last trade
20 Aug 2026
Last filed
24 Aug 2026

Companies traded

Where they are an officer
DLB Dolby LaboratoriesOfficer · Funds, Shells & SPACs · last 17 Aug 20210 buys · 26 sells
National SemiconductorOfficer · last 23 Sep 20110 buys · 5 sells
Everywhere else they filed: board seats, 10% stakes, other companies
ANET Arista NetworksDirector · Hardware, Devices & Storage · last 20 Aug 20260 buys · 0 sells
CDNS Cadence Design SystemsDirector · Software · last 7 May 20260 buys · 0 sells
ISRG Intuitive SurgicalDirector · Medical Devices · last 30 Apr 20260 buys · 0 sells
PCG Pacific Gas & Electric CoDirector · Electric Utilities & IPPs · last 22 May 20182 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
20 Aug 2026filed 24 Aug 2026ANET Arista NetworksHardware, Devices & StorageSEC FORM 4 Code M—538 at $0.00filing
20 Aug 2026filed 24 Aug 2026ANET Arista Networksoption or derivative · Hardware, Devices & StorageSEC FORM 4 Code M—538 at $0.00filing
20 Aug 2026filed 24 Aug 2026ANET Arista Networksoption or derivative · Hardware, Devices & StorageSEC FORM 4 Code M—538 at $0.00filing
20 Aug 2026filed 24 Aug 2026ANET Arista NetworksHardware, Devices & StorageSEC FORM 4 Code M—538 at $0.00filing
29 May 2026filed 2 Jun 2026ANET Arista Networksoption or derivative · Hardware, Devices & StorageSEC FORM 4 Code A—2,153 at $0.00filing
29 May 2026filed 2 Jun 2026ANET Arista Networksoption or derivative · Hardware, Devices & StorageSEC FORM 4 Code A—2,153 at $0.00filing
20 May 2026filed 22 May 2026ANET Arista NetworksHardware, Devices & StorageSEC FORM 4 Code M—971 at $0.00filing
20 May 2026filed 22 May 2026ANET Arista Networksoption or derivative · Hardware, Devices & StorageSEC FORM 4 Code M—971 at $0.00filing
20 May 2026filed 22 May 2026ANET Arista Networksoption or derivative · Hardware, Devices & StorageSEC FORM 4 Code M—971 at $0.00filing
20 May 2026filed 22 May 2026ANET Arista NetworksHardware, Devices & StorageSEC FORM 4 Code M—971 at $0.00filing
7 May 2026filed 11 May 2026CDNS Cadence Design SystemsSoftwareSEC FORM 4 Code A—714 at $0.00filing
7 May 2026filed 11 May 2026CDNS Cadence Design SystemsSoftwareSEC FORM 4 Code A—714 at $0.00filing
30 Apr 2026filed 30 Apr 2026ISRG Intuitive SurgicalMedical DevicesSEC FORM 4 Code M—531 at $0.00filing
30 Apr 2026filed 30 Apr 2026ISRG Intuitive Surgicaloption or derivative · Medical DevicesSEC FORM 4 Code M—531 at $0.00filing
30 Apr 2026filed 30 Apr 2026ISRG Intuitive Surgicaloption or derivative · Medical DevicesSEC FORM 4 Code A—554 at $0.00filing
30 Apr 2026filed 30 Apr 2026ISRG Intuitive Surgicaloption or derivative · Medical DevicesSEC FORM 4 Code M—531 at $0.00filing
30 Apr 2026filed 30 Apr 2026ISRG Intuitive Surgicaloption or derivative · Medical DevicesSEC FORM 4 Code A—554 at $0.00filing
30 Apr 2026filed 30 Apr 2026ISRG Intuitive SurgicalMedical DevicesSEC FORM 4 Code M—531 at $0.00filing
20 Feb 2026filed 24 Feb 2026ANET Arista NetworksHardware, Devices & StorageSEC FORM 4 Code M—971 at $0.00filing
20 Feb 2026filed 24 Feb 2026ANET Arista Networksoption or derivative · Hardware, Devices & StorageSEC FORM 4 Code M—971 at $0.00filing

News

Dolby Laboratories and EVM Cinemas introduce Keralam's first Dolby Cinema in Fort KochiDLB · fonearena.com · 19 Oct 2026Dolby Laboratories $DLB Holdings Reduced by Ninety One UK LtdDLB · dailypolitical.com · 16 Oct 2026

0 headlines in the last 90 days name Lewis Chew; 2 articles from the last 14 days about the 2 companies they traded most, at most three about any one of them.

Sectors

Financials26
Utilities2
Not placed5

Buys in green, sells in red, by the company’s sector.

Related people

John D. CoulingSVP, Entertainment · SVP, Entertainment at Dolby Laboratories, filing Form 4 there in the last year
Dagmar Dolby10% owner · 10% owner at Dolby Laboratories, filing Form 4 there in the last year
Mark Andrew ShermanEVP, Gen. Counsel & Secretary · EVP, Gen. Counsel & Secretary at Dolby Laboratories, filing Form 4 there in the last year
Marc WhittenPresident and CEO · President and CEO at Dolby Laboratories, filing Form 4 there in the last year
Ryan NicholsonVP, CAO and Corp. Controller · VP, CAO and Corp. Controller at Dolby Laboratories, filing Form 4 there in the last year
John O. LarsenDirector · Also traded PCG in the last 90 days
William Craig FugateDirector · Also traded PCG in the last 90 days
Shriram RevankarSVP, Advanced Technology Group · Also traded DLB in the last 90 days