Insider at

04

Insider transactions

05
0 buys (P) 5 sells (S) Net: $-31,160,260 + 71 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

71 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Aug. 27, 2026 NSSC S 379,529 $34.50 $13,093,750 621,958 Direct -37.90% Disposed 4.8% (price as of 2026-10-02)
Aug. 26, 2026 NSSC S 95,471 $35.93 $3,430,273 1,001,487 Direct -8.70% Disposed 0.7% (price as of 2026-10-02)
March 3, 2026 NSSC S 55,318 $43.22 $2,390,844 1,096,958 Direct -4.80% Disposed -16.3% (price as of 2026-10-02)
March 2, 2026 NSSC S 129,682 $44.99 $5,834,393 1,152,276 Direct -10.12% Disposed -19.6% (price as of 2026-10-02)
Feb. 5, 2026 NSSC S 150,000 $42.74 $6,411,000 1,256,010 Direct -10.67% Disposed -15.4% (price as of 2026-10-02)
May 8, 2024 NSSC S 250,000 $44.20 $11,050,000 1,406,010 Direct -15.10% Disposed -18.2% (price as of 2026-10-02)
April 8, 2024 NSSC S 50,000 $40.75 $2,037,500 1,656,010 Direct -2.93% Disposed -11.2% (price as of 2026-10-02)
March 8, 2024 NSSC S 2,000,000 $40.75 $81,500,000 1,706,010 Direct -53.97% Disposed -11.2% (price as of 2026-10-02)
Feb. 14, 2024 NSSC S 28,000 $45.12 $1,263,360 3,706,010 Direct -0.75% Disposed -19.8% (price as of 2026-10-02)
Feb. 15, 2023 NSSC S 287,500 $31.50 $9,056,250 3,696,010 Direct -7.22% Disposed 14.8% (price as of 2026-10-02)
Feb. 13, 2023 NSSC S 2,012,500 $31.50 $63,393,750 3,983,510 Direct -33.56% Disposed 14.8% (price as of 2026-10-02)
Nov. 15, 2022 NSSC S 1,271,442 $24.79 $31,519,047 5,996,010 Direct -17.50% Disposed 45.9% (price as of 2026-10-02)
Sept. 17, 2021 NSSC S 10,558 $41.94 $442,803 3,633,726 Direct -0.29% Disposed 72.5% (price as of 2026-10-02)
Sept. 16, 2021 NSSC S 2,047 $41.88 $85,728 3,644,284 Direct -0.06% Disposed 72.7% (price as of 2026-10-02)
Sept. 15, 2021 NSSC S 18,500 $43.42 $803,270 3,646,331 Direct -0.50% Disposed 66.6% (price as of 2026-10-02)
Dec. 21, 2020 NSSC S 334,961 $24.70 $8,273,537 3,664,831 Direct -8.37% Disposed 192.9% (price as of 2026-10-02)
Dec. 15, 2020 NSSC S 2,233,071 $24.70 $55,156,854 3,999,792 Direct -35.83% Disposed 192.9% (price as of 2026-10-02)
Sept. 13, 2006 NSSC P 10,000 $6.20 $62,000 5,862,660 Direct +0.17% Acquired 1066.8% (price as of 2026-10-02)
Dec. 29, 2004 NSSC S 20,223 $12.66 $256,023 2,481,182 Direct -0.81% Disposed 1185.7% (price as of 2026-10-02)
Dec. 28, 2004 NSSC S 74,650 $13.04 $973,436 2,501,405 Direct -2.90% Disposed 1148.2% (price as of 2026-10-02)
Dec. 27, 2004 NSSC S 11,327 $13.50 $152,914 2,576,055 Direct -0.44% Disposed 1105.7% (price as of 2026-10-02)
June 24, 2004 NSSC S 10,000 $8.10 $81,000 2,156,152 Direct -0.46% Disposed 2311.3% (price as of 2026-10-02)
June 9, 2004 NSSC S 5,000 $8.75 $43,750 2,166,152 Direct -0.23% Disposed 2132.2% (price as of 2026-10-02)
June 8, 2004 NSSC S 15,000 $8.76 $131,400 2,171,152 Direct -0.69% Disposed 2129.7% (price as of 2026-10-02)
June 7, 2004 NSSC S 25,950 $8.72 $226,284 2,186,152 Direct -1.17% Disposed 2139.9% (price as of 2026-10-02)
June 4, 2004 NSSC S 22,000 $8.63 $189,860 2,212,102 Direct -0.98% Disposed 2163.2% (price as of 2026-10-02)
June 3, 2004 NSSC S 28,650 $8.58 $245,817 2,234,102 Direct -1.27% Disposed 2176.4% (price as of 2026-10-02)
June 2, 2004 NSSC S 22,200 $8.67 $192,474 2,262,752 Direct -0.97% Disposed 2152.8% (price as of 2026-10-02)
June 1, 2004 NSSC S 5,000 $9.06 $45,300 2,284,952 Direct -0.22% Disposed 2055.8% (price as of 2026-10-02)

Showing latest 100 of 104 transactions

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Sept. 29, 2026 NSSC Employee Stock Option (Right to Buy) Common Stock (11,665) $37.90 Sept. 29, 2036 11,665 Acquired
Feb. 10, 2026 NSSC Employee Stock Option (Right to Buy) Common Stock (100,000) $22.50 Oct. 19, 2031 100,000 Disposed
Feb. 10, 2026 NSSC Employee Stock Option (Right to Buy) Common Stock (8,000) $26.94 Aug. 25, 2032 8,000 Disposed
Feb. 9, 2024 NSSC Employee Stock Option (Right to Buy) Common Stock (6,000) $4.81 Dec. 15, 2027 6,000 Disposed
Feb. 9, 2024 NSSC Employee Stock Option (Right to Buy) Common Stock (16,000) $8.08 Oct. 2, 2028 16,000 Disposed
Feb. 9, 2024 NSSC Employee Stock Option (Right to Buy) Common Stock (16,000) $16.80 Oct. 28, 2029 16,000 Disposed
Feb. 9, 2024 NSSC Employee Stock Option (Right to Buy) Common Stock (6,000) $4.81 Dec. 15, 2027 6,000 Disposed
Feb. 9, 2024 NSSC Employee Stock Option (Right to Buy) Common Stock (16,000) $8.08 Oct. 2, 2028 16,000 Disposed
Feb. 9, 2024 NSSC Employee Stock Option (Right to Buy) Common Stock (16,000) $16.80 Oct. 28, 2029 16,000 Disposed
Aug. 25, 2022 NSSC Employee Stock Options (Right to Buy) Common Stock (10,000) $26.94 Aug. 25, 2032 10,000 Acquired
Oct. 19, 2021 NSSC Employee Stock Options (Right to Buy) Common Stock (50,000) $44.99 Oct. 19, 2031 50,000 Acquired
Oct. 28, 2019 NSSC Employee Stock Options (Right to Buy) Common Stock (8,000) $33.59 Oct. 28, 2029 8,000 Acquired
Feb. 7, 2019 NSSC Employee Stock Options (Right to Buy) Common Stock (5,000) $9.62 Dec. 15, 2027 1,000 Disposed
Nov. 12, 2018 NSSC Employee Stock Options (Right to Buy) Common Stock (10,000) $4.81 Oct. 20, 2024 2,000 Disposed
Nov. 12, 2018 NSSC Employee Stock Options (Right to Buy) Common Stock (5,000) $9.62 Dec. 15, 2027 1,000 Disposed
Oct. 2, 2018 NSSC Employee Stock Options (Right to Buy) Common Stock (8,000) $16.16 Oct. 2, 2028 8,000 Acquired
June 20, 2018 NSSC Employee Stock Options (Right to Buy) Common Stock (10,000) $4.81 Oct. 20, 2024 2,000 Disposed
June 20, 2018 NSSC Employee Stock Options (Right to Buy) Common Stock (10,000) $5.37 Sept. 9, 2023 2,000 Disposed
Dec. 15, 2017 NSSC Employee Stock Options (Right to Buy) Common Stock (5,000) $9.62 Dec. 15, 2027 5,000 Acquired
March 20, 2017 NSSC Employee Stock Options (Right to Buy) Common Stock (25,000) $5.89 Oct. 9, 2017 25,000 Disposed
March 20, 2017 NSSC Employee Stock Options (Right to Buy) Common Stock (10,000) $5.37 Sept. 9, 2023 8,000 Disposed
March 20, 2017 NSSC Employee Stock Options (Right to Buy) Common Stock (10,000) $4.81 Oct. 20, 2024 6,000 Disposed
Sept. 28, 2016 NSSC Employee Stock Options (Right to Buy) Common Stock (25,000) $6.62 Oct. 26, 2016 25,000 Disposed
Oct. 21, 2014 NSSC NAPCO Security Technologies, Inc. Employee Stock Options NAPCO Security Technologies, Inc. Common Stock (10,000) $4.81 Oct. 20, 2024 10,000 Acquired
Sept. 26, 2013 NSSC NAPCO Security Technologies, Inc. Employee Stock Options NAPCO Security Technologies, Inc. Common Stock (10,000) $5.37 Sept. 9, 2023 10,000 Acquired
Sept. 16, 2013 NSSC NAPCO Security Systems, Inc. Employee Stock Options NAPCO Security Technologies, Inc. (0) $2.09 March 19, 2014 135,000 Disposed
Dec. 10, 2012 NSSC NAPCO Security Systems, Inc. Employee Stock Options NAPCO Security Technologies, Inc. (0) $1.79 Feb. 27, 2013 135,000 Disposed
Dec. 10, 2012 NSSC NAPCO Security Systems, Inc. Employee Stock Options NAPCO Security Technologies, Inc. (0) $1.88 June 15, 2013 540,000 Disposed
Oct. 9, 2007 NSSC NAPCO Security Systems, Inc. Employee Stock Options NAPCO Security Systems, Inc. Common Stock (25,000) $5.89 Oct. 9, 2017 25,000 Acquired
Nov. 6, 2006 NSSC NAPCO Security Systems, Inc. Employee Stock Options NAPCO Security Systems, Inc. Common Stock (0) · Dec. 3, 2006 135,000 Disposed
Oct. 26, 2006 NSSC NAPCO Security Systems, Inc. Employee Stock Options NAPCO Security Systems, Inc. Common Stock (25,000) $6.62 Oct. 26, 2016 25,000 Acquired
Sept. 13, 2005 NSSC NAPCO Security Systems Inc. Employee Stock Options NAPCO Security Systems, Inc. Common Stock (0) $1.89 Sept. 27, 2005 60,000 Disposed
March 1, 2005 NSSC NAPCO Security Systems Inc. Employee Stock Options NAPCO Security Systems Inc. Common Stock (60,000) $1.89 Sept. 27, 2005 60,000 Disposed
March 19, 2004 NSSC NAPCO Security Systems, Inc. Employee Stock Options NAPCO Security Systems, Inc. Common Stock (25,000) $11.29 March 19, 2014 25,000 Acquired
Feb. 18, 2004 NSSC NAPCO Security Systems Inc. Employee Stock Options NAPCO Security Systems, Inc. Common Stock (0) $3.03 Feb. 26, 2004 225,000 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Compensation (DEF 14A)

08

Matched by name from proxy statements (DEF 14A) — verify against the filing.

NSSC

(3)Chairman of the Board ofDirectors, CEO and Secretary
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2025 $960,920 $726,621 · · · · $47,362 $1,734,903
2020 $790,045 $199,500 · $82,155 · · $63,672 $1,135,371
2019 $761,104 $285,810 · $25,724 · · $81,265 $1,153,903

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.