Quick Takeaways
- NSSC - NAPCO SECURITY TECHNOLOGIES, INC has 12 insiders with reported activity on this page.
- Net insider value flow over the last year: -$15,546,800.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 12 Insiders of NAPCO SECURITY TECHNOLOGIES, INC
- Symbol
- NSSC on Nasdaq
- Location
- Amityville, NY
What Changed
- Buy value: ; sell value: $15,546,799.
- Net share flow: -359,000.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$15,546,800.
Buys
$0
Shares: 0
Insiders: 0
Sells
$15,546,800
Shares: 359,000
Insiders: 2
Net
-$15,546,800
Shares: -359,000
Insiders: -2
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 335,000 | $0 | $14,636,237 | -$14,636,237 |
| 3-6 | 0 | 19,000 | $0 | $764,750 | -$764,750 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 5,000 | $0 | $145,812 | -$145,812 |
NAPCO SECURITY TECHNOLOGIES, INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Richard Soloway | CEO, Chairman of Board, Secy, Director | $47,498,004 | -$14,636,237 | -24% | Mixed | 02 Mar 2026 |
| Kevin S. Buchel | President & COO, Director | $4,631,873 | Mixed | 19 Feb 2026 | ||
| Michael Carrieri | Executive VP of Engineering | $1,256,790 | Mixed | 26 Feb 2026 | ||
| Stephen M. Spinelli | Senior Vice President of Sales | $1,010,812 | -$910,563 | -47% | Mixed | 17 Mar 2026 |
| Paul Stephen Beeber | Director | $362,149 | Mixed | 12 Sep 2024 | ||
| Andrew Wilder | Director | $341,010 | Mixed | 25 Aug 2022 | ||
| Donna Anne Soloway | Director | $341,010 | Mixed | 25 Aug 2022 | ||
| Rick A. Lazio | Director | $202,500 | Mixed | 25 Aug 2022 | ||
| Robert A. Ungar | Director | $186,300 | Mixed | 25 Aug 2022 | ||
| David Alexander Paterson | Director | Mixed | 02 Feb 2023 | |||
| Joseph Casmir Pipczynski | Chief Revenue Officer | Mixed | 29 Jan 2026 | |||
| Andrew J. Vuono | SVP of Finance and CAO | Mixed | 03 Jun 2024 |
Top shareholders of NAPCO SECURITY TECHNOLOGIES, INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
13F
|
Company |
15%
|
5,350,443
|
$210,755,020 | +$99,734,371 | 31 Mar 2026 | |
| VANGUARD GROUP INC |
13F
|
Company |
8.1%
|
2,882,063
|
$120,182,028 | — | 31 Dec 2025 | |
| Fundsmith LLP |
13F
|
Company |
5%
|
1,779,857
|
$74,220,037 | — | 31 Dec 2025 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
4.4%
|
1,569,363
|
$65,456,792 | — | 31 Dec 2025 | |
| Copeland Capital Management, LLC |
13F
|
Company |
4%
|
1,420,792
|
$59,247,043 | — | 31 Dec 2025 | |
| Richard Soloway |
3/4/5
|
CEO, Chairman of Board, Secy, Director |
—
mixed-class rows
|
1,098,958
mixed-class rows
|
$47,498,004 | -$14,636,237 | 02 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.9%
|
1,028,863
|
$42,910,018 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.5%
|
896,315
|
$37,483,645 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
2.5%
|
879,298
|
$36,666,727 | — | 31 Dec 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
2.4%
|
864,022
|
$36,029,717 | — | 31 Dec 2025 | |
| Divisadero Street Capital Management, LP |
13F
|
Company |
2.3%
|
809,729
|
$33,765,699 | — | 31 Dec 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
2%
|
714,382
|
$29,789,729 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1.9%
|
671,243
|
$27,991,180 | — | 31 Dec 2025 | |
| Doma Perpetual Capital Management LLC |
13F
|
Company |
1.8%
|
627,931
|
$26,184,723 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1.7%
|
597,918
|
$24,933,180 | — | 31 Dec 2025 | |
| FMR LLC |
13D/G
13F
|
Company |
3%
|
1,094,045
|
$24,911,405 | $0 | 31 Mar 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
1.6%
|
580,557
|
$24,211,000 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.2%
|
423,516
|
$17,660,665 | — | 31 Dec 2025 | |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
|
Company |
1.2%
|
414,990
|
$17,305,083 | — | 31 Dec 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
1.1%
|
376,227
|
$15,688,666 | — | 31 Dec 2025 | |
| ENVESTNET ASSET MANAGEMENT INC |
13F
|
Company |
1%
|
365,742
|
$15,251,459 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.93%
|
333,200
|
$13,894,440 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.88%
|
314,842
|
$13,128,911 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.87%
|
310,600
|
$12,952,020 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.87%
|
310,269
|
$12,938,237 | — | 31 Dec 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.83%
|
297,027
|
$12,386,019 | — | 31 Dec 2025 | |
| Granite Investment Partners, LLC |
13F
|
Company |
0.79%
|
280,881
|
$11,712,738 | — | 31 Dec 2025 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.74%
|
262,496
|
$10,946,084 | — | 31 Dec 2025 | |
| Visionary Wealth Advisors |
13F
|
Company |
0.74%
|
262,462
|
$10,944,666 | — | 31 Dec 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.72%
|
257,840
|
$10,751,928 | — | 31 Dec 2025 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
|
Company |
0.68%
|
243,510
|
$10,154,367 | — | 31 Dec 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.62%
|
219,884
|
$9,169,163 | — | 31 Dec 2025 | |
| WASATCH ADVISORS LP |
13F
|
Company |
0.61%
|
219,113
|
$9,137,012 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.61%
|
215,960
|
$9,005,535 | — | 31 Dec 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.56%
|
200,489
|
$8,360,391 | — | 31 Dec 2025 | |
| ALTA CAPITAL MANAGEMENT LLC/ |
13F
|
Company |
0.56%
|
199,666
|
$8,326,102 | — | 31 Dec 2025 | |
| GAMCO INVESTORS, INC. ET AL |
13F
|
Company |
0.53%
|
188,400
|
$7,856,280 | — | 31 Dec 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.52%
|
185,645
|
$7,741,397 | — | 31 Dec 2025 | |
| CAPTRUST FINANCIAL ADVISORS |
13F
|
Company |
0.52%
|
185,462
|
$7,733,769 | — | 31 Dec 2025 | |
| CONGRESS ASSET MANAGEMENT CO |
13F
|
Company |
0.51%
|
181,393
|
$7,564,084 | — | 31 Dec 2025 | |
| CANADA PENSION PLAN INVESTMENT BOARD |
13F
|
Company |
0.5%
|
177,100
|
$7,385,070 | — | 31 Dec 2025 | |
| KORNITZER CAPITAL MANAGEMENT INC /KS |
13F
|
Company |
0.48%
|
170,304
|
$7,101,677 | — | 31 Dec 2025 | |
| ALGERT GLOBAL LLC |
13F
|
Company |
0.44%
|
157,265
|
$6,558,000 | — | 31 Dec 2025 | |
| Russell Investments Group, Ltd. |
13F
|
Company |
0.41%
|
146,957
|
$6,128,131 | — | 31 Dec 2025 | |
| RICE HALL JAMES & ASSOCIATES, LLC |
13F
|
Company |
0.41%
|
144,925
|
$6,043,373 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.4%
|
142,545
|
$5,944,127 | — | 31 Dec 2025 | |
| CenterBook Partners LP |
13F
|
Company |
0.37%
|
133,350
|
$5,560,695 | — | 31 Dec 2025 | |
| Trexquant Investment LP |
13F
|
Company |
0.37%
|
132,041
|
$5,506,110 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.37%
|
131,083
|
$5,466,160 | — | 31 Dec 2025 | |
| DANSKE BANK A/S |
13F
|
Company |
0.37%
|
130,235
|
$5,430,800 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for NAPCO SECURITY TECHNOLOGIES, INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Stephen M. Spinelli | NSSC | Common Stock | Tax liability | -21.6% | -3,212 | 11,688 | 17 Mar 2026 | Direct | ||
| Stephen M. Spinelli | NSSC | Common Stock | Options Exercise | 1505.6% | 13,972 | 14,900 | 17 Mar 2026 | Direct | ||
| Stephen M. Spinelli | NSSC | Employee Stock Option (Right to Buy) | Options Exercise | -58.3% | -13,972 | 9,980 | 17 Mar 2026 | Direct | ||
| Richard Soloway | NSSC | Common Stock | Sale | -4.8% | $2,390,844 | $43.22 | -55,318 | 1,096,958 | 03 Mar 2026 | Direct |
| Richard Soloway | NSSC | Common Stock | Sale | -10.1% | $5,834,393 | $44.99 | -129,682 | 1,152,276 | 02 Mar 2026 | Direct |
| Michael Carrieri | NSSC | Common Stock | Tax liability | -20% | -6,651 | 26,610 | 26 Feb 2026 | Direct | ||
| Michael Carrieri | NSSC | Common Stock | Options Exercise | 43% | 10,000 | 33,261 | 26 Feb 2026 | Direct | ||
| Michael Carrieri | NSSC | Employee Stock Option (Right to Buy) | Options Exercise | -100% | -10,000 | 0 | 26 Feb 2026 | Direct | ||
| Kevin S. Buchel | NSSC | Common Stock | Tax liability | -29.8% | -33,560 | 79,179 | 19 Feb 2026 | Direct | ||
| Kevin S. Buchel | NSSC | Common Stock | Options Exercise | 79.7% | 50,000 | 112,739 | 19 Feb 2026 | Direct | ||
| Kevin S. Buchel | NSSC | Employee Stock Option (Right to Buy) | Options Exercise | -51.2% | -50,000 | 47,584 | 19 Feb 2026 | Direct | ||
| Richard Soloway | NSSC | Common Stock | Tax liability | -6.02% | -82,052 | 1,281,132 | 10 Feb 2026 | Direct | ||
| Richard Soloway | NSSC | Common Stock | Options Exercise | 8.65% | 108,000 | 1,356,010 | 10 Feb 2026 | Direct | ||
| Richard Soloway | NSSC | Employee Stock Option (Right to Buy) | Options Exercise | -100% | -108,000 | 0 | 10 Feb 2026 | Direct | ||
| Richard Soloway | NSSC | Common Stock | Sale | -10.7% | $6,411,000 | $42.74 | -150,000 | 1,256,010 | 05 Feb 2026 | Direct |
| Stephen M. Spinelli | NSSC | Common Stock | Sale | -95.3% | $764,750 | $40.25 | -19,000 | 928 | 17 Nov 2025 | Direct |
| Michael Carrieri | NSSC | Common Stock | Tax liability | -22.6% | -6,576 | 22,532 | 17 Sep 2025 | Direct | ||
| Michael Carrieri | NSSC | Common Stock | Options Exercise | 75.8% | 12,000 | 27,837 | 17 Sep 2025 | Direct | ||
| Michael Carrieri | NSSC | Employee Stock Option (Right to Buy) | Options Exercise | -85.7% | -12,000 | 2,000 | 17 Sep 2025 | Direct | ||
| Stephen M. Spinelli | NSSC | Common Stock | Sale | -20.1% | $145,812 | $29.16 | -5,000 | 19,928 | 06 Jun 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.