SMTC insider buying and SEC filings, explained
Semtech Corp. · CIK 88941
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$7.0M
Planned sales (10b5-1)
$11.7M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 21, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $139.44 ($70K), marked as a 10b5-1 plan trade. Holdings down 2% to 26,100 shares. | SEC filing Filed Oct 23, 2026, 4:02 PM ET |
| Oct 7, 2026 | Planned (10b5-1) | Jason Elliot Green (EVP and CCO) sold 2,766 shares at $190.35 ($527K), marked as a 10b5-1 plan trade. Holdings down 27% to 7,367 shares. | SEC filing Filed Oct 9, 2026, 4:23 PM ET |
| Oct 1, 2026 | Planned (10b5-1) | Mark Lin (CFO) sold 967 shares at $178.87 ($173K), marked as a 10b5-1 plan trade. Holdings down 3% to 35,999 shares. | SEC filing Filed Oct 5, 2026, 4:02 PM ET |
| Oct 2, 2026 | Planned (10b5-1) | Hong Q. Hou (CEO and Director) sold 2,000 shares at $191.21 ($382K), marked as a 10b5-1 plan trade. Holdings down 3% to 65,976 shares. | SEC filing Filed Oct 5, 2026, 4:01 PM ET |
| Sep 23, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $172.61 ($86K), marked as a 10b5-1 plan trade. Holdings down 2% to 26,600 shares. | SEC filing Filed Sep 25, 2026 |
| Sep 16, 2026 | Sale | Rodolpho C Cardenuto (Director) sold 5,321 shares at about $165.00 ($878K). Holdings down 100% to 0 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 18, 2026 |
| Sep 10, 2026 | Planned (10b5-1) | Mark Lin (CFO) sold 683 shares at $159.90 ($109K), marked as a 10b5-1 plan trade. Holdings down 2% to 35,366 shares. | SEC filing Filed Sep 14, 2026 |
| Sep 4, 2026 | Planned (10b5-1) | Julie Garcia Ruehl (Director) sold 1,500 shares at $145.00 ($218K), marked as a 10b5-1 plan trade. Holdings down 17% to 7,140 shares. | SEC filing Filed Sep 9, 2026 |
| Sep 4, 2026 | Planned (10b5-1) | Hong Q. Hou (CEO and Director) sold 2,000 shares at $138.71 ($277K), marked as a 10b5-1 plan trade. Holdings down 3% to 60,799 shares. | SEC filing Filed Sep 9, 2026 |
| Aug 19, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $135.48 ($68K), marked as a 10b5-1 plan trade. Holdings down 2% to 27,100 shares. | SEC filing Filed Aug 21, 2026 |
| Aug 17, 2026 | Planned (10b5-1) | Asaf Silberstein (President / COO) sold 5,000 shares indirectly (by trust) at $150.00 ($750K), marked as a 10b5-1 plan trade. Holdings by trust down 5% to 88,862 shares. | SEC filing Filed Aug 19, 2026 |
| Aug 7, 2026 | Planned (10b5-1) | Hong Q. Hou (CEO and Director) sold 2,000 shares at $140.00 ($280K), marked as a 10b5-1 plan trade. Holdings down 3% to 62,799 shares. | SEC filing Filed Aug 11, 2026 |
| Jul 22, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $133.07 ($67K), marked as a 10b5-1 plan trade. Holdings down 2% to 27,600 shares. | SEC filing Filed Jul 24, 2026 |
| Jul 14, 2026 | Planned (10b5-1) | Asaf Silberstein (President / COO) sold 3,000 shares indirectly (by trust) at $145.04 ($435K), marked as a 10b5-1 plan trade. Holdings by trust down 3% to 93,862 shares. | SEC filing Filed Jul 16, 2026 |
| Jul 10, 2026 | Planned (10b5-1) | Hong Q. Hou (CEO and Director) sold 2,000 shares at $133.00 ($266K), marked as a 10b5-1 plan trade. Holdings down 3% to 64,799 shares. | SEC filing Filed Jul 14, 2026 |
| Jul 8, 2026 | Planned (10b5-1) | Asaf Silberstein (President / COO) sold 8,500 shares indirectly (by trust) at about $127.80 ($1.1M), marked as a 10b5-1 plan trade. Holdings by trust down 8% to 96,862 shares. | SEC filing Filed Jul 10, 2026 |
| Jul 7, 2026 | Planned (10b5-1) | Jason Elliot Green (EVP and CCO) sold 2,264 shares at about $129.90 ($294K), marked as a 10b5-1 plan trade. Holdings down 21% to 8,611 shares. | SEC filing Filed Jul 9, 2026 |
| Jul 1, 2026 | Planned (10b5-1) | Mark Lin (CFO) sold 970 shares at $150.41 ($146K), marked as a 10b5-1 plan trade. Holdings down 3% to 34,896 shares. | SEC filing Filed Jul 6, 2026 |
| Jun 30, 2026 | Planned (10b5-1) | Gregory Michael Fischer (Director) sold 1,500 shares at $156.24 ($234K), marked as a 10b5-1 plan trade. Holdings down 21% to 5,678 shares. | SEC filing Filed Jul 2, 2026 |
| Jun 29, 2026 | Sale | Hong Q. Hou (CEO and Director) sold 9,605 shares at about $152.56 ($1.5M). Holdings down 13% to 63,615 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 1, 2026 |
| Jun 24, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $164.99 ($82K), marked as a 10b5-1 plan trade. Holdings down 2% to 28,100 shares. | SEC filing Filed Jun 26, 2026 |
| Jun 22, 2026 | Sale | John Michael Wilson (Chief Quality Officer and CTO) sold 5,500 shares at $170.00 ($935K). Holdings down 6% to 80,876 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 24, 2026 |
| Jun 10, 2026 | Planned (10b5-1) | Mark Lin (CFO) sold 683 shares at $155.16 ($106K), marked as a 10b5-1 plan trade. Holdings down 2% to 34,263 shares. | SEC filing Filed Jun 12, 2026 |
| Jun 5, 2026 | Planned (10b5-1) | Hong Q. Hou (CEO and Director) sold 2,000 shares at $162.10 ($324K), marked as a 10b5-1 plan trade. Holdings down 3% to 69,228 shares. | SEC filing Filed Jun 9, 2026 |
| Jun 3, 2026 | Sale | Asaf Silberstein (President / COO) sold 2,000 shares at $164.00 ($328K). Holdings down 2% to 104,165 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 5, 2026 |
| May 28, 2026 | Sale | Gregory Michael Fischer (Director) sold 1,000 shares at $164.69 ($165K). Holdings down 35% to 1,857 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 1, 2026 |
| May 28, 2026 | Sale | Ye Jane Li (Director) sold 5,285 shares at $166.84 ($882K). Holdings down 88% to 729 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 1, 2026 |
| May 20, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $138.21 ($69K), marked as a 10b5-1 plan trade. Holdings down 2% to 23,279 shares. | SEC filing Filed May 22, 2026 |
| May 1, 2026 | Planned (10b5-1) | Hong Q. Hou (CEO and Director) sold 2,000 shares at $103.01 ($206K), marked as a 10b5-1 plan trade. Holdings down 3% to 71,228 shares. | SEC filing Filed May 5, 2026 |
| Apr 22, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $105.93 ($53K), marked as a 10b5-1 plan trade. Holdings down 2% to 23,779 shares. | SEC filing Filed Apr 24, 2026 |
| Apr 10, 2026 | Planned (10b5-1) | Hong Q. Hou (CEO and Director) sold 2,000 shares at $90.11 ($180K), marked as a 10b5-1 plan trade. Holdings down 3% to 73,228 shares. | SEC filing Filed Apr 14, 2026 |
| Apr 9, 2026 | Sale | Martin Burvill (Director) sold 2,500 shares at about $88.98 ($222K). Holdings down 36% to 4,409 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 13, 2026 |
| Apr 1, 2026 | Planned (10b5-1) | Mark Lin (CFO) sold 974 shares at $78.42 ($76K), marked as a 10b5-1 plan trade. Holdings down 3% to 33,343 shares. | SEC filing Filed Apr 2, 2026 |
| Apr 1, 2026 | Sale | Jason Elliot Green (EVP and CCO) sold 7,500 shares at about $81.73 ($613K). Holdings down 46% to 8,811 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 2, 2026 |
| Mar 24, 2026 | Planned (10b5-1) | Mark Lin (CFO) sold 9,186 shares at $75.05 ($689K), marked as a 10b5-1 plan trade. Holdings down 22% to 32,710 shares. | SEC filing Filed Mar 25, 2026 |
| Mar 18, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $80.87 ($40K), marked as a 10b5-1 plan trade. Holdings down 2% to 24,279 shares. | SEC filing Filed Mar 20, 2026 |
| Mar 10–11, 2026 | Planned (10b5-1) | Mark Lin (CFO) sold 6,642 shares between Mar 10 and Mar 11 at about $86.43 ($574K), marked as a 10b5-1 plan trade. Holdings down 20% to 26,536 shares. | SEC filing Filed Mar 12, 2026 |
| Mar 6, 2026 | Planned (10b5-1) | Mark Lin (CFO) sold 6,582 shares at $83.75 ($551K), marked as a 10b5-1 plan trade. Holdings down 23% to 22,125 shares. | SEC filing Filed Mar 9, 2026 |
| Feb 18, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $88.24 ($44K), marked as a 10b5-1 plan trade. Holdings down 2% to 24,779 shares. | SEC filing Filed Feb 20, 2026 |
| Feb 9, 2026 | Planned (10b5-1) | Asaf Silberstein (President / COO) sold 10,000 shares at $92.00 ($920K), marked as a 10b5-1 plan trade. Holdings down 13% to 68,496 shares. | SEC filing Filed Feb 11, 2026 |
| Feb 2, 2026 | Planned (10b5-1) | Asaf Silberstein (President / COO) sold 10,000 shares at $88.00 ($880K), marked as a 10b5-1 plan trade. Holdings down 11% to 78,496 shares. | SEC filing Filed Feb 4, 2026 |
| Jan 22, 2026 | Planned (10b5-1) | Asaf Silberstein (President / COO) sold 5,000 shares at $83.00 ($415K), marked as a 10b5-1 plan trade. Holdings down 5% to 88,496 shares. | SEC filing Filed Jan 26, 2026 |
| Jan 21, 2026 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $78.25 ($39K), marked as a 10b5-1 plan trade. Holdings down 2% to 25,279 shares. | SEC filing Filed Jan 23, 2026 |
| Jan 9, 2026 | Sale | Gregory Michael Fischer (Director) sold 1,034 shares at $75.50 ($78K). Holdings down 27% to 2,857 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 13, 2026 |
| Jan 8, 2026 | Sale | John Michael Wilson (Chief Quality Officer and CTO) sold 5,000 shares at $75.12 ($376K). Holdings down 8% to 60,066 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 13, 2026 |
| Jan 7, 2026 | Sale | Saar Gillai (Director) sold 3,600 shares at $75.26 ($271K). Holdings down 27% to 9,523 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 9, 2026 |
| Jan 5, 2026 | Planned (10b5-1) | Mark Lin (CFO) sold 1,333 shares at $76.20 ($102K), marked as a 10b5-1 plan trade. Holdings down 7% to 18,477 shares. | SEC filing Filed Jan 6, 2026 |
| Dec 17, 2025 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $71.61 ($36K), marked as a 10b5-1 plan trade. Holdings down 2% to 25,779 shares. | SEC filing Filed Dec 19, 2025 |
| Dec 5, 2025 | Planned (10b5-1) | Asaf Silberstein (President / COO) sold 10,500 shares at about $79.64 ($836K), marked as a 10b5-1 plan trade. Holdings down 10% to 93,496 shares. | SEC filing Filed Dec 9, 2025 |
| Dec 3, 2025 | Sale | Hong Q. Hou (CEO and Director) sold 10,000 shares at about $74.08 ($741K). Holdings down 32% to 21,559 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 5, 2025 |
| Nov 19, 2025 | Planned (10b5-1) | Paul V Walsh Jr (Director) sold 500 shares at $63.08 ($32K), marked as a 10b5-1 plan trade. Holdings down 2% to 26,279 shares. | SEC filing Filed Nov 21, 2025 |
47 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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