← United States · Coverage record
US · SEC FORM 4
SILICON LABORATORIES INC.
SLAB · Nasdaq · CIK 0001038074 · Technology · Semiconductors
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
17 Form 4 transaction lines observed in the same window
2 sales · 15 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2021-05-26 · Sadana Sumit.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 2,553,387
- Previous report
- 2,600,883
- Avg daily volume
- 272,564
- Days to cover
- 9.4
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2021-05-26 | Sadana Sumit | Purchase (P) | Common Stock, $0.0001 par value | 1,000 | USD 132.80 | USD 132,800 | SEC filing ↗ |
Form 4 evidence
31 transaction lines in the latest 365-day window; 331 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-08-14 | CONRAD ROBERT J | Sale (S) | Common Stock, $0.0001 par value | 6,581 | USD 218.21 | USD 1,436,040 | SEC filing ↗ |
| 2026-05-18 | Johnson Robert Matthew | Sale (S) | Common Stock, $0.0001 par value | 8,024 | USD 216.83 | USD 1,739,844 | SEC filing ↗ |
| 2026-05-15 | Tolany Brandon | Tax withholding (F) | Common Stock, $0.0001 par value | 4,160 | USD 216.59 | USD 901,014 | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-08-14 | CONRAD ROBERT J | Sale (S) | Common Stock, $0.0001 par value | 6,581 | USD 218.21 | USD 1,436,040 | SEC filing ↗ |
| 2026-05-18 | Johnson Robert Matthew | Sale (S) | Common Stock, $0.0001 par value | 8,024 | USD 216.83 | USD 1,739,844 | SEC filing ↗ |
| 2026-05-15 | Tolany Brandon | Tax withholding (F) | Common Stock, $0.0001 par value | 4,160 | USD 216.59 | USD 901,014 | SEC filing ↗ |
| 2026-05-15 | MAULDIN MARK D | Tax withholding (F) | Common Stock, $0.0001 par value | 858 | USD 216.59 | USD 185,834 | SEC filing ↗ |
| 2026-05-15 | Johnson Robert Matthew | Tax withholding (F) | Common Stock, $0.0001 par value | 10,363 | USD 216.59 | USD 2,244,522 | SEC filing ↗ |
| 2026-05-15 | CONRAD ROBERT J | Tax withholding (F) | Common Stock, $0.0001 par value | 3,653 | USD 216.59 | USD 791,203 | SEC filing ↗ |
| 2026-05-15 | Butler Dean Warren | Tax withholding (F) | Common Stock, $0.0001 par value | 6,291 | USD 216.59 | USD 1,362,568 | SEC filing ↗ |
| 2026-04-30 | Tolany Brandon | Award / grant (A) | Common Stock, $0.0001 par value | 45 | USD 86.46 | USD 3,891 | SEC filing ↗ |
| 2026-04-30 | MAULDIN MARK D | Award / grant (A) | Common Stock, $0.0001 par value | 18 | USD 86.46 | USD 1,556 | SEC filing ↗ |
| 2026-04-30 | Butler Dean Warren | Award / grant (A) | Common Stock, $0.0001 par value | 152 | USD 86.46 | USD 13,142 | SEC filing ↗ |
| 2026-04-23 | Wyatt Christy | Award / grant (A) | Common Stock, $0.0001 par value | 962 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-23 | Sadana Sumit | Award / grant (A) | Common Stock, $0.0001 par value | 962 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-23 | SOOCH NAVDEEP S | Award / grant (A) | Common Stock, $0.0001 par value | 1,226 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-23 | Richardson Nina | Award / grant (A) | Common Stock, $0.0001 par value | 962 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-23 | Luther Sherri R | Award / grant (A) | Common Stock, $0.0001 par value | 962 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-23 | LOWE GREGG A | Award / grant (A) | Common Stock, $0.0001 par value | 962 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-23 | BOCK WILLIAM G | Award / grant (A) | Common Stock, $0.0001 par value | 962 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-15 | Tolany Brandon | Award / grant (A) | Common Stock, $0.0001 par value | 8,669 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-15 | MAULDIN MARK D | Award / grant (A) | Common Stock, $0.0001 par value | 3,153 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-15 | Johnson Robert Matthew | Award / grant (A) | Common Stock, $0.0001 par value | 25,218 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-15 | CONRAD ROBERT J | Award / grant (A) | Common Stock, $0.0001 par value | 8,669 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-15 | Butler Dean Warren | Award / grant (A) | Common Stock, $0.0001 par value | 11,033 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-13 | MAULDIN MARK D | Tax withholding (F) | Common Stock, $0.0001 par value | 356 | USD 207.27 | USD 73,788 | SEC filing ↗ |
| 2026-01-13 | Richardson Nina | Sale (S) | Common Stock, $0.0001 par value | 1,355 | USD 149.00 | USD 201,895 | SEC filing ↗ |
| 2025-12-05 | Tolany Brandon | Sale (S) | Common Stock, $0.0001 par value | 1,954 | USD 141.49 | USD 276,471 | SEC filing ↗ |
| 2025-12-05 | Tolany Brandon | Option exercise / conversion (M) | Common Stock, $0.0001 par value | 1,954 | USD 43.82 | USD 85,624 | SEC filing ↗ |
| 2025-12-04 | Tolany Brandon | Sale (S) | Common Stock, $0.0001 par value | 4,246 | USD 140.17 | USD 595,162 | SEC filing ↗ |
| 2025-12-04 | Tolany Brandon | Option exercise / conversion (M) | Common Stock, $0.0001 par value | 4,246 | USD 43.82 | USD 186,060 | SEC filing ↗ |
| 2025-10-31 | Tolany Brandon | Award / grant (A) | Common Stock, $0.0001 par value | 53 | USD 86.46 | USD 4,582 | SEC filing ↗ |
| 2025-10-31 | MAULDIN MARK D | Award / grant (A) | Common Stock, $0.0001 par value | 21 | USD 86.46 | USD 1,816 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | SLAB |
| CIK | 0001038074 |
| Sector | Technology |
| Industry | Semiconductors Yahoo Finance |
| SEC SIC | 3674 Semiconductors & Related Devices |
| Exchange | Nasdaq |
Data coverage
| Local Form 4 history | 331 transaction lines from 2020-01-13 to 2026-08-14 1 P purchase lines · 78 S sale lines · 252 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.