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Who

Jack R. Lazar

Director

Company insider

Files Form 4 as: Director, Resideo Technologies; Director, GlobalFoundries; Director, Box; Director, Astera Labs; Director, ThredUp; Director, Casper Sleep; Director, Silicon Laboratories; Director, Mellanox Technologies.

In numbers

Trades disclosed
679
Buys
13
Sells
65
Bought
$1.9M
Sold
$47.2M
Companies
12
Companies where not an officer
10
First trade
24 Jun 2005
Last trade
1 Oct 2026
Last filed
5 Oct 2026

Companies traded

Where they are an officer
GPRO GoProOfficer · Leisure Products & Vehicles · last 25 Jan 20160 buys · 4 sells
Atheros CommunicationsOfficer · last 24 May 20110 buys · 33 sells
Everywhere else they filed: board seats, 10% stakes, other companies
REZI Resideo TechnologiesDirector · Distributors & Wholesale · last 1 Oct 20262 buys · 2 sells
GFS GlobalFoundriesDirector · Semiconductors · last 28 Jul 20260 buys · 0 sells
BOX BoxDirector · Software · last 25 Jun 20260 buys · 6 sells
ALAB Astera LabsDirector · Semiconductors · last 4 Jun 20261 buy · 10 sells
TDUP ThredUpDirector · E-Commerce & Marketplaces · last 3 Sep 20245 buys · 0 sells
Casper SleepDirector · last 25 Jan 20221 buy · 0 sells
SLAB Silicon LaboratoriesDirector · Semiconductors · last 1 Sep 20212 buys · 9 sells
Mellanox TechnologiesDirector · last 27 Apr 20200 buys · 0 sells
ON Semiconductor Connectivity SolutionsDirector · last 19 Jun 20191 buy · 0 sells
TubemogulDirector · last 19 Dec 20161 buy · 1 sell

Activity over time

1 Nov 2024 – 1 Oct 2026
20Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
1 Oct 2026filed 5 Oct 2026REZI Resideo TechnologiesDistributors & WholesaleSEC FORM 4 Code A$33K1,811 at $17.96filing
28 Jul 2026filed 30 Jul 2026GFS GlobalFoundriesSemiconductorsSEC FORM 4 Code A—3,291 at $0.00filing
28 Jul 2026filed 30 Jul 2026GFS GlobalFoundriesSemiconductorsSEC FORM 4 Code A—3,291 at $0.00filing
1 Jul 2026filed 2 Jul 2026REZI Resideo TechnologiesDistributors & WholesaleSEC FORM 4 Code A$32K1,010 at $31.55filing
1 Jul 2026filed 2 Jul 2026REZI Resideo TechnologiesDistributors & WholesaleSEC FORM 4 Code A$32K1,010 at $31.55filing
25 Jun 2026filed 29 Jun 2026BOX BoxSoftwareSEC FORM 4 Code A—8,372 at $0.00filing
25 Jun 2026filed 29 Jun 2026BOX BoxSoftwareSEC FORM 4 Code A—8,372 at $0.00filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Code A—837 at $0.00filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$389K1,101 at $352.97filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$112K318 at $351.72filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$5,96917 at $351.13filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$148K423 at $349.96filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$67K193 at $347.84filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$82K238 at $346.27filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$85K246 at $345.24filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$84K243 at $344.03filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$181K527 at $342.55filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$68K200 at $339.56filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$319K879 at $362.84filing
4 Jun 2026filed 8 Jun 2026ALAB Astera LabsSemiconductorsSEC FORM 4 Sold$308K854 at $361.11filing

The newest 500 lines are listed; the numbers count every line.

News

Sectors

Technology28
Consumer Discretionary9
Industrials4
Not placed37

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

Related people

Brian Robert TrattSVP, Chief Financial Officer · SVP, Chief Financial Officer at GoPro, filing Form 4 there in the last year
Jason Christopher StephenSVP, General Counsel · SVP, General Counsel at GoPro, filing Form 4 there in the last year
Charles LafradesChief Accounting Officer · Chief Accounting Officer at GoPro, filing Form 4 there in the last year
Nicholas WoodmanCEO, Chairman of the Board · CEO, Chairman of the Board at GoPro, filing Form 4 there in the last year
Tyrone Ahmad-TaylorDirector · Director at GoPro, filing Form 4 there in the last year
Dylan C. SmithChief Financial Officer · Also traded BOX in the last 90 days
Stefan A. DyckerhoffDirector · Also traded ALAB in the last 90 days
Olivia NottebohmChief Operating Officer · Also traded BOX in the last 90 days