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Napco Security Technologies, Inc. (NSSC) institutional ownership

Latest close $35.66 Jul 23, 2026
Market cap$1.4B 52-week range SectorIndustrials
Funds holding · Q1 2026
261
reported NSSC position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net bought $157M
138 buyers · 123 sellers

Napco Security Technologies, Inc. (NSSC) price and institutional activity

Dates

Q1 2026

$335M bought by 138 investors
BlackRock$103MPrudential Financial Inc$31M +136 more
$179M sold by 123 investors
Fundsmith LLP-$59MAdage Capital Partners Gp, L.L.C.-$10M +121 more
Bought Sold Totals per quarter; hover a bar for the names.

Napco Security Technologies, Inc. (NSSC) institutional activity · 261

Investor Type Est. change Change Δ Own Date
BlackRock · Added +$103M
Change +2.5M Date Q1 2026
BlackRock Added· Q1 2026 +$103M +2.5M Q1 2026
Fundsmith LLP · Reduced −$59M
Change −1.4M Δ Own −78.4% Date Q1 2026
Fundsmith LLP Reduced· Q1 2026 −$59M −1.4M −78.4% Q1 2026
Prudential Financial Inc · New +$31M
Change +750K Date Q1 2026
Prudential Financial Inc New· Q1 2026 +$31M +750K Q1 2026
Copeland Capital Management, LLC · Added +$25M
Change +588K Date Q1 2026
Copeland Capital Management, LLC Added· Q1 2026 +$25M +588K Q1 2026
State Street · Added +$22M
Change +535K Date Q1 2026
State Street Added· Q1 2026 +$22M +535K Q1 2026
Vanguard · Added +$16M
Change +385K Date Q1 2026
Vanguard Added· Q1 2026 +$16M +385K Q1 2026
Bessemer Group Inc · Added +$12M
Change +278K Date Q1 2026
Bessemer Group Inc Added· Q1 2026 +$12M +278K Q1 2026
Adage Capital Partners Gp, L.L.C. · Exited −$10M
Change −244K Δ Own −100.0% Date Q1 2026
Adage Capital Partners Gp, L.L.C. Exited· Q1 2026 −$10M −244K −100.0% Q1 2026
Point72 Asset Management, L.P. · Added +$9.4M
Change +224K Δ Own +87.0% Date Q1 2026
Point72 Asset Management, L.P. Added· Q1 2026 +$9.4M +224K +87.0% Q1 2026
Qube Research & Technologies Ltd · Reduced −$8.8M
Change −210K Date Q1 2026
Qube Research & Technologies Ltd Reduced· Q1 2026 −$8.8M −210K Q1 2026
Tudor Investment Corp Et Al · Exited −$8.4M
Change −200K Δ Own −100.0% Date Q1 2026
Tudor Investment Corp Et Al Exited· Q1 2026 −$8.4M −200K −100.0% Q1 2026
Principal Financial Group Inc · Added +$6.7M
Change +159K Date Q1 2026
Principal Financial Group Inc Added· Q1 2026 +$6.7M +159K Q1 2026
Janus Henderson Group PLC · Reduced −$6.1M
Change −144K Date Q1 2026
Janus Henderson Group PLC Reduced· Q1 2026 −$6.1M −144K Q1 2026
UBS AM · Added +$5.9M
Change +141K Date Q1 2026
UBS AM Added· Q1 2026 +$5.9M +141K Q1 2026
Danske Bank A · Exited −$5.5M
Change −130K Δ Own −100.0% Date Q1 2026
Danske Bank A Exited· Q1 2026 −$5.5M −130K −100.0% Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 261

Famous investor activity in Napco Security Technologies, Inc. (NSSC)

Napco Security Technologies, Inc. (NSSC) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Soloway Donna Anne · Director 12 operations $0
Price $4.35–$26.94 Qty 0 Owned 1K Trade date May 18, 2026 Filed date May 20, 2026
Soloway Donna Anne Director 12 operations $4.35–$26.94 0 $0 1K May 18, 2026 May 20, 2026
Spinelli Stephen M. · Officer 2 operations $0
Price $10.02 Qty 0 Owned 10K Trade date Mar 17, 2026 Filed date Mar 19, 2026
Spinelli Stephen M. Officer 2 operations $10.02 0 $0 10K Mar 17, 2026 Mar 19, 2026
Spinelli Stephen M. · Officer Tax withholding or exercise payment (F) -$140K
Price $43.59 Qty -3K Owned 12K Trade date Mar 17, 2026 Filed date Mar 19, 2026
Spinelli Stephen M. Officer Tax withholding or exercise payment (F) $43.59 -3K -$140K 12K Mar 17, 2026 Mar 19, 2026
Soloway Richard · Director, Officer Sell −$2.4M
Price $43.22 Qty −55K Owned 1.1M Trade date Mar 3, 2026 Filed date Mar 4, 2026
Soloway Richard Director, Officer Sell $43.22 −55K −$2.4M 1.1M Mar 3, 2026 Mar 4, 2026
Soloway Richard · Director, Officer Sell −$5.8M
Price $44.99 Qty −130K Owned 1.2M Trade date Mar 2, 2026 Filed date Mar 4, 2026
Soloway Richard Director, Officer Sell $44.99 −130K −$5.8M 1.2M Mar 2, 2026 Mar 4, 2026
Carrieri Michael · Officer 2 operations $0
Price $22.50 Qty 0 Owned 0 Trade date Feb 26, 2026 Filed date Feb 27, 2026
Carrieri Michael Officer 2 operations $22.50 0 $0 0 Feb 26, 2026 Feb 27, 2026
Carrieri Michael · Officer Tax withholding or exercise payment (F) -$314K
Price $47.23 Qty -7K Owned 27K Trade date Feb 26, 2026 Filed date Feb 27, 2026
Carrieri Michael Officer Tax withholding or exercise payment (F) $47.23 -7K -$314K 27K Feb 26, 2026 Feb 27, 2026
Buchel Kevin S. · Director, Officer 2 operations $0
Price $22.50 Qty 0 Owned 48K Trade date Feb 19, 2026 Filed date Feb 20, 2026
Buchel Kevin S. Director, Officer 2 operations $22.50 0 $0 48K Feb 19, 2026 Feb 20, 2026
Buchel Kevin S. · Director, Officer Tax withholding or exercise payment (F) $1.5M
Price $44.98 Qty 34K Owned 79K Trade date Feb 19, 2026 Filed date Feb 20, 2026
Buchel Kevin S. Director, Officer Tax withholding or exercise payment (F) $44.98 34K $1.5M 79K Feb 19, 2026 Feb 20, 2026
Soloway Richard · Director, Officer 4 operations $0
Price $22.50–$26.94 Qty 0 Owned 2K Trade date Feb 10, 2026 Filed date Feb 11, 2026
Soloway Richard Director, Officer 4 operations $22.50–$26.94 0 $0 2K Feb 10, 2026 Feb 11, 2026
Soloway Richard · Director, Officer 2 operations -$3.5M
Price $42.63 Qty -82K Owned 1.3M Trade date Feb 10, 2026 Filed date Feb 11, 2026
Soloway Richard Director, Officer 2 operations $42.63 -82K -$3.5M 1.3M Feb 10, 2026 Feb 11, 2026
Soloway Richard · Director, Officer Sell −$6.4M
Price $42.74 Qty −150K Owned 1.3M Trade date Feb 5, 2026 Filed date Feb 6, 2026
Soloway Richard Director, Officer Sell $42.74 −150K −$6.4M 1.3M Feb 5, 2026 Feb 6, 2026
Spinelli Stephen M. · Officer Sell −$765K
Price $40.25 Qty −19K Owned 928 Trade date Nov 17, 2025 Filed date Nov 18, 2025
Spinelli Stephen M. Officer Sell $40.25 −19K −$765K 928 Nov 17, 2025 Nov 18, 2025
Carrieri Michael · Officer 4 operations $0
Price $22.50–$26.94 Qty 0 Owned 2K Trade date Sep 17, 2025 Filed date Sep 18, 2025
Carrieri Michael Officer 4 operations $22.50–$26.94 0 $0 2K Sep 17, 2025 Sep 18, 2025
Carrieri Michael · Officer 2 operations -$279K
Price $42.40 Qty -7K Owned 23K Trade date Sep 17, 2025 Filed date Sep 18, 2025
Carrieri Michael Officer 2 operations $42.40 -7K -$279K 23K Sep 17, 2025 Sep 18, 2025
15 of 15

Napco Security Technologies, Inc. (NSSC) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Blackrock, Inc. 3.3M
% of shares outstanding 8.9% Filing date Nov 12, 2024
Blackrock, Inc. 3.3M 8.9% Nov 12, 2024
BlackRock Inc. 2.5M
% of shares outstanding 6.8% Filing date Jan 26, 2024
BlackRock Inc. 2.5M 6.8% Jan 26, 2024
Vanguard Group Inc 2.5M
% of shares outstanding 6.7% Filing date Feb 13, 2024
Vanguard Group Inc 2.5M 6.7% Feb 13, 2024
FMR LLC 2.1M
% of shares outstanding 5.7% Filing date Nov 12, 2024
FMR LLC 2.1M 5.7% Nov 12, 2024
T. Rowe Price Investment Management, Inc. 2.1M
% of shares outstanding 5.7% Filing date Feb 14, 2024
T. Rowe Price Investment Management, Inc. 2.1M 5.7% Feb 14, 2024
Copeland Capital Management, LLC 2.0M
% of shares outstanding 5.6% Filing date May 7, 2026
Copeland Capital Management, LLC 2.0M 5.6% May 7, 2026
Wasatch Advisors Inc
% of shares outstanding 4.9% Filing date Feb 11, 2022
Wasatch Advisors Inc 4.9% Feb 11, 2022
Soloway Richard 1.8M
% of shares outstanding 4.8% Filing date Mar 12, 2024
Soloway Richard 1.8M 4.8% Mar 12, 2024
8 of 8

Napco Security Technologies, Inc. (NSSC) ownership FAQ

Who owns NSSC?

261 reporting institutions disclosed NSSC position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.