Who
Dean Warren Butler
Director
Company insider
Files Form 4 as: Director, Pixelworks; Sr VP and CFO, Silicon Laboratories; Officer, Synaptics.
In numbers
- Trades disclosed
- 81
- Buys
- 0
- Sells
- 13
- Bought
- $0
- Sold
- $8.8M
- Companies
- 3
- Companies where not an officer
- 1
- First trade
- 21 Oct 2019
- Last trade
- 20 May 2026
- Last filed
- 22 May 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 20 May 2026filed 22 May 2026 | PXLW PixelworksSoftware | SEC FORM 4 Code A | —8,000 | filing |
| 20 May 2026filed 22 May 2026 | PXLW PixelworksSoftware | SEC FORM 4 Code A | —8,000 | filing |
| 15 May 2026filed 19 May 2026 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code F | $1.4M6,291 at $216.59 | filing |
| 15 May 2026filed 19 May 2026 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code F | $1.4M6,291 at $216.59 | filing |
| 30 Apr 2026filed 1 May 2026 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code A | $13K152 at $86.46 | filing |
| 30 Apr 2026filed 1 May 2026 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code A | $13K152 at $86.46 | filing |
| 15 Feb 2026filed 17 Feb 2026 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code A | —11,033 at $0.00 | filing |
| 15 Feb 2026filed 17 Feb 2026 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code A | —11,033 at $0.00 | filing |
| 31 Oct 2025filed 12 Nov 2025 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code A | $15K177 at $86.46 | filing |
| 23 May 2025filed 27 May 2025 | PXLW PixelworksSoftware | SEC FORM 4 Code A | —176,883 | filing |
| 15 May 2025filed 19 May 2025 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code A | —14,731 at $0.00 | filing |
| 15 May 2025filed 19 May 2025 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code F | $552K4,148 at $133.17 | filing |
| 30 Apr 2025filed 19 May 2025 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code A | $14K164 at $86.46 | filing |
| 15 May 2024filed 17 May 2024 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code A | —11,978 at $0.00 | filing |
| 15 May 2024filed 17 May 2024 | SLAB Silicon LaboratoriesSemiconductors | SEC FORM 4 Code A | —15,971 at $0.00 | filing |
| 13 May 2024filed 16 May 2024 | PXLW PixelworksSoftware | SEC FORM 4 Code A | —53,543 | filing |
| 17 Feb 2024filed 22 Feb 2024 | SYNA SynapticsSemiconductors | SEC FORM 4 Code A | —1,064 at $0.00 | filing |
| 17 Feb 2024filed 22 Feb 2024 | SYNA SynapticsSemiconductors | SEC FORM 4 Code F | $206K1,940 at $106.32 | filing |
| 20 Nov 2023filed 21 Nov 2023 | SYNA SynapticsSemiconductors | SEC FORM 4 Sold | $314K2,973 at $105.71 | filing |
| 20 Nov 2023filed 21 Nov 2023 | SYNA SynapticsSemiconductors | SEC FORM 4 Sold | $54K504 at $106.51 | filing |
News
No headline names them, or the companies they trade most, lately.