As of the latest Form 4 filed May 20, 2026.
What NAPCO Security Technologies Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 13 most recent filings for NSSC.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-05-20 | 2026-05-18 | Soloway Donna Anne Director | MExercise | +4.00K | $26.94 | $108K | No | Form 4 ↗ |
| 2026-05-20 | 2026-05-18 | Soloway Donna Anne, Director | MExercise | +10.0K | $22.93 | $229K | No | Form 4 ↗ |
| 2026-05-20 | 2026-05-18 | Soloway Donna Anne, Director | MExercise | +7.50K | $11.68 | $87.6K | No | Form 4 ↗ |
| 2026-05-20 | 2026-05-18 | Soloway Donna Anne, Director | MExercise | +8.00K | $15.27 | $122K | No | Form 4 ↗ |
| 2026-05-20 | 2026-05-18 | Soloway Donna Anne, Director | MExercise | +8.00K | $8.10 | $64.8K | No | Form 4 ↗ |
| 2026-05-20 | 2026-05-18 | Soloway Donna Anne, Director | MExercise | +3.60K | $4.35 | $15.7K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Spinelli Stephen M Senior Vice President of Sales | FTax | −3.21K | $43.59 | $140K | No | Form 4 ↗ |
| 2026-03-19 | 2026-03-17 | Spinelli Stephen M, Senior Vice President of Sales | MExercise | +14.0K | $10.02 | $140K | No | Form 4 ↗ |
| 2026-02-11 | 2026-02-10 | SOLOWAY RICHARD CEO, Chairman of Board, Secy | FTax | −7.17K | $42.63 | $306K | No | Form 4 ↗ |
| 2026-02-11 | 2026-02-10 | SOLOWAY RICHARD, CEO, Chairman of Board, Secy | MExercise | +8.00K | $26.94 | $216K | No | Form 4 ↗ |
| 2026-02-11 | 2026-02-10 | SOLOWAY RICHARD, CEO, Chairman of Board, Secy | FTax | −74.9K | $42.63 | $3.19M | No | Form 4 ↗ |
| 2026-02-11 | 2026-02-10 | SOLOWAY RICHARD, CEO, Chairman of Board, Secy | MExercise | +100K | $22.50 | $2.25M | No | Form 4 ↗ |
| 2026-02-06 | 2026-02-05 | SOLOWAY RICHARD CEO, Chairman of Board, Secy | SSale | −150K | $42.74 | $6.41M | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also NSSC’s full analysis or the market-wide insider trading feed. The tabs above jump to NSSC’s other SEC data.
Source: SEC Form 4 filings for NSSC, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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