Power Integrations Inc
POWI- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0000833640
No open-market purchases or sales by Power Integrations Inc insiders were filed in the last 90 days; 375 institutions reported holding it in 13F filings for Q2 2026, worth $5.24B in total; no superinvestor holds it.
Holders of 5% or more of POWI
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Power Integrations Inc, 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 | 14.90%8.23M shares | – | Jan 21, 20261 filing | Jan 21, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G | 9.05%5.02M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| State Street Corp | 13G | 6.10%3.40M shares | +1.00 ppfrom 5.10% | Nov 10, 20252 filings | Feb 9, 2026 | SEC |
| Wellington Management Group LLP | 13G | 6.00%3.36M shares | New | May 15, 20261 filing | May 15, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.28%2.93M 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
25 Schedule 13D and 13G filings on Power Integrations Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jun 4, 20263:32 PM ET | Neuberger Berman Group LLCand 1 other | 13G/A | 4.50%2.52M shares | –Below 5% | May 31, 2026 | SEC |
| May 15, 20267:06 AM ET | Wellington Management Group LLPand 3 others | 13G | 6.00%3.36M shares | New | Mar 31, 2026 | SEC |
| Apr 30, 202612:10 PM ET | Vanguard Capital Management LLC | 13G | 5.28%2.93M shares | New | Mar 31, 2026 | SEC |
| Apr 29, 20262:50 PM ET | Vanguard Portfolio Management LLC | 13G | 9.05%5.02M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 202611:18 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −13.65 ppfrom 13.65%Below 5% | Mar 13, 2026 | SEC |
| Feb 9, 20267:58 AM ET | State Street Corp | 13G | 6.10%3.40M shares | +1.00 ppfrom 5.10% | Dec 31, 2025 | SEC |
| Jan 30, 20262:46 PM ET | Vanguard Group Inc | 13G/A | 13.65%7.56M shares | – | Dec 31, 2025 | SEC |
| Jan 21, 202612:30 PM ET | BlackRock, Inc. | 13G/A | 14.90%8.23M shares | – | Dec 31, 2025 | SEC |
| Nov 10, 20258:51 AM ET | State Street Corp | 13G | 5.10%2.88M shares | New | Sep 30, 2025 | SEC |
| Nov 12, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Nov 4, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Neuberger Berman Group LLC | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 23, 20244:14 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | Neuberger Berman Group LLC | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 23, 20233:52 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Sep 9, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Neuberger Berman Group LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 27, 202211:00 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 25, 20223:03 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2021 | Neuberger Berman Group LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 25, 20214:49 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
70 notices from officers, directors and other affiliates planning to sell Power Integrations Inc shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| May 29, 20264:37 PM ET | Sunil K GuptaOfficer | 6.86K | $574.0K | May 29, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 28, 20264:07 PM ET | Balu & Mohini Balakrishnan Fam TrOfficer · Director | 124.3K | $10.7M | May 28, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 28, 20264:07 PM ETAmended | Clifford J WalkerOfficer | 15.0K | $1.23M | May 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 27, 20264:41 PM ET | Nicholas & Janice Brathwaite Living Trust DTD 02/28/2007Board Member | 5.87K | $500.0K | May 27, 2026 | UBS Financial Services Inc | SEC |
| May 26, 20266:15 PM ET | Sunil K GuptaOfficer | 15.9K | $1.31M | May 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 26, 20264:15 PM ET | Balu & Mohini Balakrishnan Fam TrOfficer · Director | 118.6K | $9.69M | May 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 21, 20264:24 PM ET | Balu & Mohini Balakrishnan Fam TrOfficer · Director | 53.9K | $3.81M | May 21, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 14, 20266:40 PM ET | Gagan JainOfficer | 541 | $38.7K | May 14, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 14, 20265:06 PM ET | Clifford J WalkerOfficer | 300 | $21.4K | May 12, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 13, 20265:14 PM ET | Nicholas & Janice Brathwaite Living Trust DTD 02/28/2007Board Member | 13.6K | $967.5K | May 13, 2026 | UBS Financial Services Inc | SEC |
| May 13, 20265:06 PM ET | Clifford J WalkerOfficer | 20.3K | $1.47M | May 13, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 12, 20264:19 PM ET | Clifford J WalkerOfficer | 9.36K | $667.0K | May 12, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 25, 20266:12 PM ET | Gagan JainOfficer | 3.48K | $167.9K | Feb 25, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 10, 20264:16 PM ET | Balu BalakrishnanOfficer · Director | 5.00K | $235.8K | Feb 10, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 9, 20265:32 PM ETAmended | Balu BalakrishnanOfficer · Director | 6.37K | $296.3K | Feb 9, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 3, 20264:35 PM ET | Balu BalakrishnanOfficer · Director | 10.1K | $451.1K | Feb 3, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jan 29, 20264:03 PM ET | Balu BalakrishnanOfficer · Director | 5.58K | $257.0K | Jan 29, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 24, 20255:16 PM ET | Gagan JainOfficer | 1.03K | $34.9K | Nov 24, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 22, 20254:06 PM ET | Douglas BaileyFormer officer | 15.0K | $710.6K | Aug 22, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 18, 20254:30 PM ET | Douglas Baileyformer Officer. retired 06/30/2025 | 17.0K | $788.4K | Aug 18, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 14, 20254:08 PM ET | Douglas Baileyformer Officer. retired 06/30/2025 | 17.0K | $796.1K | Aug 14, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 12, 20256:38 PM ET | Gagan JainOfficer | 2.04K | $93.8K | Aug 12, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Apr 2, 20254:19 PM ET | Balu BalakrishnanOfficer · Director | 9.54K | $488.5K | Apr 2, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 20, 20255:27 PM ET | Barsan RaduOfficer | 10.4K | $685.9K | Feb 20, 2025 | Morgan Stanley Smith Barney LLC Executive Services | SEC |
| Feb 11, 20254:30 PM ET | Douglas BaileyOfficer | 11.3K | $662.4K | Feb 11, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
Showing the latest 25. See the POWI notices from the last 12 months