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Who

Robert Matthew Johnson

President & CEO

Company insider

Files Form 4 as: President & CEO, Silicon Laboratories; Director, Novanta.

In numbers

Trades disclosed
45
Buys
0
Sells
11
Bought
$0
Sold
$9.4M
Companies
2
Companies where not an officer
1
First trade
15 Feb 2020
Last trade
18 May 2026
Last filed
19 May 2026

Companies traded

Where they are an officer
SLAB Silicon LaboratoriesDirector, Officer · Semiconductors · last 18 May 20260 buys · 11 sells
Everywhere else they filed: board seats, 10% stakes, other companies
NOVT NovantaDirector · Electronic Components & EMS · last 2 Jan 20260 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
18 May 2026filed 19 May 2026SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Sold$1.7M8,024 at $216.83filing
18 May 2026filed 19 May 2026SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Sold$1.7M8,024 at $216.83filing
15 May 2026filed 19 May 2026SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Code F$2.2M10,363 at $216.59filing
15 May 2026filed 19 May 2026SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Code F$2.2M10,363 at $216.59filing
15 Feb 2026filed 17 Feb 2026SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Code A—25,218 at $0.00filing
15 Feb 2026filed 17 Feb 2026SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Code A—25,218 at $0.00filing
2 Jan 2026filed 6 Jan 2026NOVT NovantaElectronic Components & EMSSEC FORM 4 Code M—1,325filing
2 Jan 2026filed 6 Jan 2026NOVT Novantaoption or derivative · Electronic Components & EMSSEC FORM 4 Code M—1,325filing
2 Jan 2026filed 6 Jan 2026NOVT Novantaoption or derivative · Electronic Components & EMSSEC FORM 4 Code A—1,799 at $0.00filing
2 Jan 2026filed 6 Jan 2026NOVT Novantaoption or derivative · Electronic Components & EMSSEC FORM 4 Code M—1,325filing
2 Jan 2026filed 6 Jan 2026NOVT Novantaoption or derivative · Electronic Components & EMSSEC FORM 4 Code A—1,799 at $0.00filing
2 Jan 2026filed 6 Jan 2026NOVT NovantaElectronic Components & EMSSEC FORM 4 Code M—1,325filing
16 May 2025filed 19 May 2025SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Sold$771K5,879 at $131.20filing
15 May 2025filed 19 May 2025SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Code A—39,282 at $0.00filing
15 May 2025filed 19 May 2025SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Code F$1.0M7,625 at $133.17filing
8 May 2025filed 12 May 2025NOVT Novantaoption or derivative · Electronic Components & EMSSEC FORM 4 Code M—818filing
8 May 2025filed 12 May 2025NOVT NovantaElectronic Components & EMSSEC FORM 4 Code M—818filing
2 Jan 2025filed 6 Jan 2025NOVT Novantaoption or derivative · Electronic Components & EMSSEC FORM 4 Code A—1,325 at $0.00filing
3 Jun 2024filed 4 Jun 2024SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Sold$895K7,230 at $123.80filing
15 May 2024filed 17 May 2024SLAB Silicon LaboratoriesSemiconductorsSEC FORM 4 Code F$1.2M9,373 at $131.57filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Technology11

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

Related people

Robert J. ConradSr VP and General Manager · Sr VP and General Manager at Silicon Laboratories, filing Form 4 there in the last year
Mark D. MauldinChief Accounting Officer · Chief Accounting Officer at Silicon Laboratories, filing Form 4 there in the last year
Brandon TolanySr VP WW Sales & Marketing · Sr VP WW Sales & Marketing at Silicon Laboratories, filing Form 4 there in the last year
Dean Warren ButlerDirector · Sr VP and CFO at Silicon Laboratories, filing Form 4 there in the last year
Nina RichardsonDirector · Director at Silicon Laboratories, filing Form 4 there in the last year