Semtech Corp
SMTC- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0000088941
In the last 90 days, Semtech Corp insiders filed 0 open-market purchases and 16 sales; 577 institutions reported holding it in 13F filings for Q2 2026, worth $15.0B in total; Maverick Capital is the only superinvestor holding it.
Holders of 5% or more of SMTC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Semtech Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 10.00%9.35M shares | +0.10 ppfrom 9.90% | Jan 21, 20263 filings | Sep 4, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G/A | 5.74%5.35M shares | −1.79 ppfrom 7.53% | Apr 29, 20262 filings | Jul 31, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.22%4.85M shares | New | Apr 30, 20261 filing | Apr 30, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
19 Schedule 13D and 13G filings on Semtech Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Sep 4, 202612:15 PM ET | BlackRock, Inc. | 13G/A | 10.00%9.35M shares | +0.10 ppfrom 9.90% | Aug 31, 2026 | SEC |
| Aug 14, 202611:10 AM ET | Ameriprise Financial Incand 1 other | 13G/A | 3.70%3.47M shares | −4.60 ppfrom 8.30%Below 5% | Jun 30, 2026 | SEC |
| Jul 31, 202611:37 AM ET | Vanguard Portfolio Management LLC | 13G/A | 5.74%5.35M shares | −1.79 ppfrom 7.53% | Jun 30, 2026 | SEC |
| Jul 30, 202611:18 AM ET | BlackRock, Inc. | 13G/A | 9.90%9.25M shares | −3.90 ppfrom 13.80% | Jun 30, 2026 | SEC |
| Apr 30, 20261:00 PM ET | Vanguard Capital Management LLC | 13G | 5.22%4.85M shares | New | Mar 31, 2026 | SEC |
| Apr 29, 20263:17 PM ET | Vanguard Portfolio Management LLC | 13G | 7.53%7.01M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 20261:02 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 12, 202610:25 AM ET | Capital Research Global Investors | 13G/A | 4.90%4.50M shares | −0.50 ppfrom 5.40%Below 5% | Dec 31, 2025 | SEC |
| Jan 21, 20267:17 PM ET | BlackRock, Inc. | 13G/A | 13.80%12.7M shares | – | Dec 31, 2025 | SEC |
| Nov 13, 202510:29 AM ET | Capital Research Global Investors | 13G | 5.40%4.69M shares | +2.90 ppfrom 2.50% | Sep 30, 2025 | SEC |
| Aug 14, 20251:14 PM ET | Ameriprise Financial Incand 1 other | 13G/A | 8.30%7.18M shares | +1.60 ppfrom 6.70% | Jun 30, 2025 | SEC |
| Feb 14, 202511:04 AM ET | Ameriprise Financial Incand 1 other | 13G/A | 6.70%5.71M shares | – | Dec 31, 2024 | SEC |
| Feb 13, 20252:15 PM ET | Capital Research Global Investors | 13G/A | 2.50%2.13M shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 5, 20254:31 PM ET | Alliancebernstein L.P. | 13G/A | 3.90%3.31M shares | −2.00 ppfrom 5.90%Below 5% | Dec 31, 2024 | SEC |
| Nov 15, 20241:37 PM ET | Alliancebernstein L.P. | 13G | 5.90%4.44M shares | New | Sep 30, 2024 | SEC |
| Mar 10, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Invesco Ltd. | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2021 | FMR LLC | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Semtech Corp shares.
No Form 144 notices for Semtech Corp are on file.