Napco Security Technologies, Inc
NSSC- Exchange
- Nasdaq
- Industry
- Communications Equipment, NEC
- SEC CIK
- 0000069633
In the last 90 days, Napco Security Technologies, Inc insiders filed 0 open-market purchases and 2 sales; 260 institutions reported holding it in 13F filings for Q2 2026, worth $1.37B in total; Fundsmith is the only superinvestor holding it.
Holders of 5% or more of NSSC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Napco Security Technologies, 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 | 15.00%5.35M shares | +7.10 ppfrom 7.90% | Oct 21, 20244 filings | Apr 7, 2026 | SEC |
| Copeland Capital Management, LLC | 13G | 5.80%2.08M shares | +0.15 ppfrom 5.65% | May 7, 20263 filings | Oct 13, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.02%1.79M shares | New | Jul 31, 20261 filing | Jul 31, 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
26 Schedule 13D and 13G filings on Napco Security Technologies, Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 13, 20263:36 PM ET | Copeland Capital Management, LLC | 13G | 5.80%2.08M shares | +0.15 ppfrom 5.65% | Sep 30, 2026 | SEC |
| Aug 4, 20262:08 PM ET | Copeland Capital Management, LLC | 13G | 5.65%2.02M shares | +0.05 ppfrom 5.60% | Jun 30, 2026 | SEC |
| Jul 31, 202610:43 AM ET | Vanguard Capital Management LLC | 13G | 5.02%1.79M shares | New | Jun 30, 2026 | SEC |
| May 7, 20264:11 PM ET | Copeland Capital Management, LLC | 13G | 5.60%2.01M shares | New | Mar 31, 2026 | SEC |
| Apr 7, 202612:39 PM ET | BlackRock, Inc. | 13G/A | 15.00%5.35M shares | +7.10 ppfrom 7.90% | Mar 31, 2026 | SEC |
| Mar 27, 202610:50 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −7.76 ppfrom 7.76%Below 5% | Mar 13, 2026 | SEC |
| Oct 17, 20256:40 PM ET | BlackRock, Inc. | 13G/A | 7.90%2.82M shares | – | Sep 30, 2025 | SEC |
| May 12, 202510:36 AM ET | FMR LLCand 1 other | 13G/A | 3.00%1.09M shares | –Below 5% | Mar 31, 2025 | SEC |
| Jan 30, 20259:58 PM ET | Vanguard Group Inc | 13G/A | 7.76%2.85M shares | – | Dec 31, 2024 | SEC |
| Nov 12, 2024 | BlackRock, Inc. | 13G/AOld format | – | – | – | SEC |
| Nov 12, 2024 | FMR LLC | 13GOld format | – | – | – | SEC |
| Oct 21, 2024 | BlackRock, Inc. | 13G/AOld format | – | – | – | SEC |
| Mar 12, 2024 | Soloway Richard | 13D/AOld format | – | – | – | SEC |
| Feb 14, 2024 | T. Rowe Price Investment Management, Inc. | 13GOld format | – | New | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20245:26 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2023 | Soloway Richard | 13D/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13GOld format | – | New | – | SEC |
| Feb 9, 2023 | FMR LLC | 13GOld format | – | New | – | SEC |
| Feb 3, 20234:27 PM ET | BlackRock Inc. | 13GOld format | – | – | – | SEC |
| Nov 17, 2022 | Soloway Richard | 13D/AOld format | – | – | – | SEC |
| Feb 11, 2022 | Wasatch Advisors Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 20225:22 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 4, 20224:12 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
| Feb 11, 2021 | Wasatch Advisors Inc | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
21 notices from officers, directors and other affiliates planning to sell Napco Security Technologies, Inc shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Aug 27, 20265:39 PM ET | Donna SolowayOfficer · Director | 21.0K | $727.2K | Aug 27, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 27, 20265:32 PM ET | Richard SolowayOfficer · Director | 379.5K | $13.1M | Aug 27, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 26, 20264:28 PM ET | Richard SolowayOfficer · Director | 95.5K | $3.43M | Aug 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 26, 20264:25 PM ET | Donna SolowayOfficer · Director | 28.0K | $1.01M | Aug 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 3, 20264:08 PM ET | Richard SolowayOfficer · Director | 55.3K | $2.39M | Mar 3, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 2, 20264:37 PM ET | Richard SolowayOfficer · Director | 129.7K | $5.83M | Mar 2, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 5, 20264:09 PM ET | Richard SolowayOfficer · Director | 150.0K | $6.32M | Feb 5, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 7, 20253:39 PM ET | Spinelli Stephen MOfficer | 19.0K | $788.5K | Nov 10, 2025 | Ameriprise Financial | SEC |
| May 30, 20254:20 PM ET | Spinelli Stephen MOfficer | 5.00K | $140.4K | Jun 2, 2025 | Ameriprise Financial | SEC |
| Aug 28, 20242:03 PM ET | Beeber Paul StephenDirector | 708 | $32.9K | Aug 28, 2024 | Charles Schwab & Co. | SEC |
| Jun 18, 20244:29 PM ET | Beeber Paul StephenDirector | 860 | $44.8K | Jun 18, 2024 | Charles Schwab Corp | SEC |
| May 10, 20248:50 AM ET | Spinelli Stephen MOfficer | 3.00K | $133.9K | May 13, 2024 | E Trade from Morgan Stanley | SEC |
| May 7, 20245:38 PM ET | Soloway, RichardOfficer · Director | 250.0K | $11.4M | May 8, 2024 | Needham & Company, LLC | SEC |
| Mar 12, 20244:12 PM ET | Buchel Kevin SOfficer · Director | 50.0K | $2.02M | Mar 12, 2024 | Wells Fargo Clearing Services | SEC |
| Mar 12, 202410:21 AM ET | Buchel Kevin SOfficer · Director | 50.0K | $2.00M | Mar 14, 2024 | Wells Fargo Advisors | SEC |
| Feb 14, 20244:52 PM ET | Richard SolowayOfficer · Director · 10% stockholder | 28.0K | $1.26M | Feb 14, 2024 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 12, 202412:13 PM ET | Buchel Kevin SOfficer · Director | 10.0K | $447.5K | Feb 12, 2024 | Wells Fargo Clearing Services | SEC |
| Feb 9, 20242:06 PM ET | Buchel Kevin SOfficer · Director | 10.0K | $450.0K | Feb 12, 2024 | Wells Fargo Advisors | SEC |
| Feb 7, 20245:06 PM ET | Carrieri MichaelOfficer | 5.20K | $223.6K | Feb 8, 2024 | HSBC Securities | SEC |
| Dec 7, 202310:13 AM ET | Beeber Paul StephenDirector | 1.32K | $36.9K | Nov 30, 2023 | Charles Schwab Corp. | SEC |
| Nov 13, 20234:24 PM ET | Beeber Paul StephenDirector | 2.17K | $56.7K | Nov 13, 2023 | Charles Schwab Corp. | SEC |