Updated Jul 16, 2026 · Last SEC filing 2026-05-19
SILICON LABORATORIES INC. (SLAB) has filed 15 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-19. 3 Form 8-K material event filings were reported by SLAB in the last 90 days. 1 Form 144 notices of proposed sale were filed for SLAB stock. InsiderAlpha tracks every SLAB SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0001038074 |
|---|
| Form 4 filings (90d) | 15 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Form 144 notices (90d) | 1 |
| Latest Form 4 filing | 2026-05-19 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Johnson Robert Matthew | President & CEO | S — Open-market sale | 8.0K | $216.83 | $1.74M | SEC | |
| MAULDIN MARK D | Chief Accounting Officer | F — Tax withholding / forfeiture | 858 | $216.59 | $186K | SEC | |
| Johnson Robert Matthew | President & CEO | F — Tax withholding / forfeiture | 10.4K | $216.59 | $2.24M | SEC | |
| CONRAD ROBERT J | Sr VP and General Manager | F — Tax withholding / forfeiture | 3.7K | $216.59 | $791K | SEC | |
| Tolany Brandon | Sr VP WW Sales & Marketing | F — Tax withholding / forfeiture | 4.2K | $216.59 | $901K | SEC | |
| Butler Dean Warren | Sr VP and CFO | F — Tax withholding / forfeiture | 6.3K | $216.59 | $1.36M | SEC | |
| Tolany Brandon | Sr VP WW Sales & Marketing | A — Grant or award | 45 | $86.46 | $4K | SEC | |
| Butler Dean Warren | Sr VP and CFO | A — Grant or award | 152 | $86.46 | $13K | SEC | |
| MAULDIN MARK D | Chief Accounting Officer | A — Grant or award | 18 | $86.46 | $2K | SEC | |
| BOCK WILLIAM G | Director | A — Grant or award | 962 | $0.00 | — | SEC | |
| Wyatt Christy | Director | A — Grant or award | 962 | $0.00 | — | SEC | |
| LOWE GREGG A | Director | A — Grant or award | 962 | $0.00 | — | SEC | |
| Sadana Sumit | Director | A — Grant or award | 962 | $0.00 | — | SEC | |
| Luther Sherri R | Director | A — Grant or award | 962 | $0.00 | — | SEC | |
| Richardson Nina | Director | A — Grant or award | 962 | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for SILICON LABORATORIES INC. (SLAB). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| MAULDIN MARK D | 2 | $187K |
| Tolany Brandon | 2 | $905K |
| Johnson Robert Matthew | 2 | $3.98M |
| Butler Dean Warren | 2 | $1.38M |
| Richardson Nina | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in SLAB insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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