William G Bock insider trades: Silicon Laboratories (SLAB) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where William reports to the SEC






and 1 more company
Open-market buys and sales
88 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 18, 2025 | SLAB | ↓ Sell10b5-1 | 1,000 | $149.43 | $149K | Direct | Feb 18, 2025 (0d) |
| Jan 22, 2025 | SLAB | ↓ Sell10b5-1 | 2,000 | $140.77 | $282K | Direct | Jan 22, 2025 (0d) |
| Nov 5, 2024 | SWI | ↓ Sell | 16,000 | $13.13 | $210K | Direct | Nov 7, 2024 (2d) |
| Aug 15, 2022 | SLAB | ↓ Sell10b5-1 | 1,000 | $146.70 | $147K | Direct | Aug 15, 2022 (0d) |
| May 16, 2022 | SLAB | ↓ Sell10b5-1 | 1,000 | $141.45 | $141K | Direct | May 16, 2022 (0d) |
| Feb 15, 2022 | SLAB | ↓ Sell10b5-1 | 1,000 | $155.31 | $155K | Direct | Feb 16, 2022 (1d) |
| Feb 15, 2022 | SAIL | ↓ Sell10b5-1 | 2,500 | $40.23 | $101K | Direct | Feb 16, 2022 (1d) |
| Dec 6, 2021 | SLAB | ↓ Sell10b5-1 | 1,000 | $190.69 | $191K | Direct | Dec 7, 2021 (1d) |
| Nov 15, 2021 | SAIL | ↓ Sell10b5-1 | 2,500 | $59.64 | $149K | Direct | Nov 17, 2021 (2d) |
| Aug 16, 2021 | SAIL | ↓ Sell10b5-1 | 2,500 | $43.61 | $109K | Direct | Aug 18, 2021 (2d) |
| Aug 16, 2021 | SLAB | ↓ Sell10b5-1 | 1,000 | $157.67 | $158K | Direct | Aug 17, 2021 (1d) |
| Jun 14, 2021 | SAIL | ↓ Sell10b5-1 | 2,500 | $47.10 | $118K | Direct | Jun 15, 2021 (1d) |
| May 17, 2021 | SLAB | ↓ Sell | 1,000 | $123.29 | $123K | Direct | May 18, 2021 (1d) |
| Feb 16, 2021 | SAIL | ↓ Sell10b5-1 | 4,000 | $62.55 | $250K | Direct | Feb 18, 2021 (2d) |
| Feb 16, 2021 | SLAB | ↓ Sell10b5-1 | 1,000 | $153.19 | $153K | Direct | Feb 17, 2021 (1d) |
| Nov 16, 2020 | SLAB | ↓ Sell10b5-1 | 1,000 | $113.43 | $113K | Direct | Nov 17, 2020 (1d) |
| Nov 16, 2020 | SAIL | ↓ Sell10b5-1 | 4,000 | $42.51 | $170K | Direct | Nov 16, 2020 (0d) |
| Aug 17, 2020 | SAIL | ↓ Sell10b5-1 | 4,000 | $36.25 | $145K | Direct | Aug 18, 2020 (1d) |
| Jul 13, 2020 | SAIL | ↓ Sell10b5-1 | 4,000 | $28.86 | $115K | Direct | Jul 15, 2020 (2d) |
| May 18, 2020 | SLAB | ↓ Sell | 2,000 | $95.00 | $190K | Direct | May 19, 2020 (1d) |
| Feb 18, 2020 | SAIL | ↓ Sell10b5-1 | 4,000 | $24.93 | $100K | Direct | Feb 20, 2020 (2d) |
| Feb 18, 2020 | SLAB | ↓ Sell10b5-1 | 1,000 | $102.61 | $103K | Direct | Feb 19, 2020 (1d) |
| Nov 15, 2019 | SAIL | ↓ Sell10b5-1 | 4,000 | $23.43 | $94K | Direct | Nov 18, 2019 (3d) |
| Nov 15, 2019 | SLAB | ↓ Sell10b5-1 | 1,000 | $109.84 | $110K | Direct | Nov 15, 2019 (0d) |
| Aug 15, 2019 | SAIL | ↓ Sell10b5-1 | 4,000 | $21.21 | $85K | Direct | Aug 21, 2019 (6d) |
| Aug 15, 2019 | SLAB | ↓ Sell10b5-1 | 1,000 | $103.35 | $103K | Direct | Aug 15, 2019 (0d) |
| Jul 1, 2019 | SLAB | ↓ Sell10b5-1 | 1,000 | $105.61 | $106K | Direct | Jul 1, 2019 (0d) |
| Jun 20, 2019 | SAIL | ↓ Sell10b5-1 | 4,000 | $20.00 | $80K | Direct | Jun 21, 2019 (1d) |
| Feb 15, 2019 | SAIL | ↓ Sell10b5-1 | 4,000 | $32.00 | $128K | Direct | Feb 19, 2019 (4d) |
| Feb 15, 2019 | SLAB | ↓ Sell10b5-1 | 1,000 | $87.74 | $88K | Direct | Feb 15, 2019 (0d) |
| Nov 15, 2018 | SAIL | ↓ Sell10b5-1 | 4,000 | $26.19 | $105K | Direct | Nov 15, 2018 (0d) |
| Nov 15, 2018 | SLAB | ↓ Sell10b5-1 | 1,000 | $82.75 | $83K | Direct | Nov 15, 2018 (0d) |
| Aug 22, 2018 | SAIL | ↓ Sell10b5-1 | 8,000 | $29.43 | $235K | Direct | Aug 22, 2018 (0d) |
| Aug 15, 2018 | SLAB | ↓ Sell10b5-1 | 1,000 | $94.50 | $95K | Direct | Aug 15, 2018 (0d) |
| Jun 15, 2018 | SLAB | ↓ Sell10b5-1 | 1,000 | $107.95 | $108K | Direct | Jun 15, 2018 (0d) |
| Feb 15, 2018 | SLAB | ↓ Sell | 2,500 | $91.91 | $230K | Direct | Feb 16, 2018 (1d) |
| Nov 15, 2017 | SLAB | ↓ Sell10b5-1 | 2,500 | $89.24 | $223K | Direct | Nov 16, 2017 (1d) |
| Aug 15, 2017 | SLAB | ↓ Sell10b5-1 | 2,500 | $75.30 | $188K | Direct | Aug 16, 2017 (1d) |
| Jun 5, 2017 | SLAB | ↓ Sell10b5-1 | 2,500 | $75.45 | $189K | Direct | Jun 5, 2017 (0d) |
| Feb 15, 2017 | SLAB | ↓ Sell10b5-1 | 3,000 | $72.16 | $216K | Direct | Feb 17, 2017 (2d) |
| Nov 15, 2016 | SLAB | ↓ Sell10b5-1 | 3,000 | $64.05 | $192K | Direct | Nov 15, 2016 (0d) |
| Aug 15, 2016 | SLAB | ↓ Sell10b5-1 | 3,000 | $54.16 | $162K | Direct | Aug 16, 2016 (1d) |
| Jun 6, 2016 | SLAB | ↓ Sell10b5-1 | 3,000 | $49.78 | $149K | Direct | Jun 7, 2016 (1d) |
| May 27, 2015 | SLAB | ↓ Sell10b5-1 | 11,250 | $54.50 | $613K | Direct | May 28, 2015 (1d) |
| May 15, 2015 | SLAB | ↓ Sell10b5-1 | 3,000 | $51.72 | $155K | Direct | May 18, 2015 (3d) |
| Mar 20, 2015 | SLAB | ↓ Sell10b5-1 | 10,000 | $52.50 | $525K | Direct | Mar 23, 2015 (3d) |
| Feb 24, 2015 | SLAB | ↓ Sell10b5-1 | 5,000 | $50.50 | $253K | Direct | Feb 25, 2015 (1d) |
| Feb 17, 2015 | SLAB | ↓ Sell10b5-1 | 3,000 | $48.15 | $144K | Direct | Feb 18, 2015 (1d) |
| Feb 5, 2015 | SLAB | ↓ Sell10b5-1 | 1,296 | $47.90 | $62K | Direct | Feb 6, 2015 (1d) |
| Dec 31, 2014 | SLAB | ↓ Sell10b5-1 | 1,131 | $48.50 | $55K | Direct | Jan 2, 2015 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other SLAB insiders
Open-market trades in the last 12 months
About William G Bock's insider trades
William G Bock is a director at Silicon Laboratories (SLAB). Since Nov 22, 2005, William has reported no open-market purchases and 88 sales worth $27.2M on SEC Form 4. There have been no open-market trades in the last 12 months.
79 sales (86% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (49 filings), shares withheld for taxes (28 filings), option exercises (28 filings), shares returned to the company (8 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every SLAB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.