Napco Security Technologies (NSSC)
Napco Security Technologies on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as communications equipment, nec.
2.5M
Short interest
settlement 2026-10-15
8.7
Days to cover
+2.1 days vs prior
53.4%
Short share of volume
2026-11-02
3
Fails to deliver
settlement 2026-10-02
Mon 1 Feb
Next earnings
estimated date
-$18.3M
Insider flow, 90 days
0 buys, 4 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in NSSC is 2,476,551 shares, down 116,258 shares over the last month. Over the last 48 readings it ranged from 2,178,316 shares (14 February 2025) to 4,664,025 shares (13 March 2026). At the reported average volume of 286K shares a day that is 8.7 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 2,476,551 | +5.3% | 286,216 | 8.65 |
| 2026-09-30 | 2,351,553 | -9.3% | 356,449 | 6.60 |
| 2026-09-15 | 2,592,809 | -2.6% | 390,687 | 6.64 |
| 2026-08-31 | 2,661,925 | -3.1% | 645,449 | 4.12 |
| 2026-08-14 | 2,747,007 | -9.4% | 240,287 | 11.43 |
| 2026-07-31 | 3,032,819 | -11.5% | 260,027 | 11.66 |
| 2026-07-15 | 3,428,459 | +3.3% | 334,644 | 10.25 |
| 2026-06-30 | 3,318,836 | +16.2% | 612,362 | 5.42 |
| 2026-06-15 | 2,856,996 | +6.3% | 431,528 | 6.62 |
| 2026-05-29 | 2,688,998 | -5.1% | 435,522 | 6.17 |
| 2026-05-15 | 2,833,507 | -11.4% | 477,174 | 5.94 |
| 2026-04-30 | 3,197,161 | -2.1% | 264,790 | 12.07 |
| 2026-04-15 | 3,267,488 | -0.9% | 338,139 | 9.66 |
| 2026-03-31 | 3,296,259 | -29.3% | 607,393 | 5.43 |
| 2026-03-13 | 4,664,025 | +54.0% | 1,329,309 | 3.51 |
| 2026-02-27 | 3,027,521 | -1.8% | 518,382 | 5.84 |
| 2026-02-13 | 3,082,557 | +6.3% | 692,409 | 4.45 |
| 2026-01-30 | 2,899,535 | +7.9% | 414,350 | 7.00 |
| 2026-01-15 | 2,687,980 | +3.6% | 272,399 | 9.87 |
| 2025-12-31 | 2,594,604 | +5.9% | 338,364 | 7.67 |
| 2025-12-15 | 2,450,548 | +12.2% | 439,347 | 5.58 |
| 2025-11-28 | 2,184,772 | -13.5% | 310,155 | 7.04 |
| 2025-11-14 | 2,525,983 | +0.3% | 360,349 | 7.01 |
| 2025-10-31 | 2,519,329 | -0.2% | 249,652 | 10.09 |
| 2025-10-15 | 2,524,570 | -1.0% | 259,366 | 9.73 |
| 2025-09-30 | 2,550,931 | +9.5% | 484,504 | 5.27 |
| 2025-09-15 | 2,328,790 | -13.6% | 453,348 | 5.14 |
| 2025-08-29 | 2,696,228 | -0.1% | 530,425 | 5.08 |
| 2025-08-15 | 2,699,951 | -5.3% | 229,329 | 11.77 |
| 2025-07-31 | 2,852,289 | -10.0% | 249,091 | 11.45 |
| 2025-07-15 | 3,169,760 | -7.3% | 272,516 | 11.63 |
| 2025-06-30 | 3,418,532 | +3.9% | 308,275 | 11.09 |
| 2025-06-13 | 3,290,116 | -9.2% | 334,359 | 9.84 |
| 2025-05-30 | 3,622,938 | -1.9% | 395,694 | 9.16 |
| 2025-05-15 | 3,694,717 | -6.4% | 584,673 | 6.32 |
| 2025-04-30 | 3,946,051 | +10.4% | 329,746 | 11.97 |
| 2025-04-15 | 3,573,680 | +9.6% | 582,700 | 6.13 |
| 2025-03-31 | 3,260,462 | +6.9% | 456,686 | 7.14 |
| 2025-03-14 | 3,050,773 | +31.9% | 502,534 | 6.07 |
| 2025-02-28 | 2,313,003 | +6.2% | 468,012 | 4.94 |
| 2025-02-14 | 2,178,316 | -22.0% | 1,138,137 | 1.91 |
| 2025-01-31 | 2,791,607 | -7.4% | 501,674 | 5.56 |
| 2025-01-15 | 3,013,364 | -1.2% | 272,613 | 11.05 |
| 2024-12-31 | 3,050,104 | -8.7% | 331,752 | 9.19 |
| 2024-12-13 | 3,340,035 | +10.3% | 277,898 | 12.02 |
| 2024-11-29 | 3,026,728 | -0.4% | 297,402 | 10.18 |
| 2024-11-15 | 3,040,111 | -12.7% | 641,338 | 4.74 |
| 2024-10-31 | 3,482,690 | +5.1% | 344,604 | 10.11 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of NSSC volume is 53.4%, down 7.8 points over the last five sessions. Over the last 30 readings it ranged from 33.0% (25 September 2026) to 69.3% (28 October 2026). The latest reading is in line with the 30-session average of 52.5%, on 1.2M shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 662K | 1.2M | 53.4% | 24,891 |
| 2026-10-30 | 81K | 156K | 52.0% | 28 |
| 2026-10-29 | 66K | 168K | 39.0% | 0 |
| 2026-10-28 | 92K | 133K | 69.3% | 0 |
| 2026-10-27 | 80K | 130K | 62.1% | 0 |
| 2026-10-26 | 78K | 127K | 61.2% | 300 |
| 2026-10-23 | 59K | 115K | 51.2% | 0 |
| 2026-10-22 | 50K | 101K | 49.7% | 0 |
| 2026-10-21 | 57K | 104K | 55.0% | 0 |
| 2026-10-20 | 43K | 79K | 53.6% | 0 |
| 2026-10-19 | 37K | 63K | 57.9% | 0 |
| 2026-10-16 | 41K | 95K | 43.7% | 0 |
| 2026-10-15 | 46K | 69K | 67.1% | 0 |
| 2026-10-14 | 41K | 94K | 43.4% | 0 |
| 2026-10-13 | 40K | 81K | 49.0% | 0 |
| 2026-10-12 | 49K | 77K | 64.2% | 0 |
| 2026-10-09 | 34K | 67K | 50.8% | 0 |
| 2026-10-08 | 76K | 149K | 50.8% | 0 |
| 2026-10-07 | 72K | 113K | 63.2% | 0 |
| 2026-10-06 | 33K | 54K | 60.3% | 0 |
| 2026-10-05 | 60K | 105K | 56.8% | 0 |
| 2026-10-02 | 44K | 84K | 53.0% | 0 |
| 2026-10-01 | 61K | 116K | 52.5% | 0 |
| 2026-09-30 | 55K | 108K | 51.1% | 0 |
| 2026-09-29 | 35K | 75K | 47.5% | 0 |
| 2026-09-28 | 50K | 95K | 52.4% | 0 |
| 2026-09-25 | 42K | 128K | 33.0% | 0 |
| 2026-09-24 | 41K | 103K | 39.6% | 0 |
| 2026-09-23 | 39K | 87K | 44.7% | 0 |
| 2026-09-22 | 56K | 116K | 48.3% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 2 October 2026, the fails-to-deliver balance in NSSC is 3 shares, down 58 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (6 August 2026) to 27,824 shares (29 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-02 | 3 | $36.19 | $109 |
| 2026-09-23 | 61 | $35.88 | $2K |
| 2026-08-18 | 50 | $38.06 | $2K |
| 2026-08-11 | 6 | $40.01 | $240 |
| 2026-08-06 | 1 | $40.34 | $40 |
| 2026-08-03 | 129 | $37.08 | $5K |
| 2026-07-13 | 6,270 | $36.07 | $226K |
| 2026-07-10 | 65 | $36.09 | $2K |
| 2026-06-30 | 4,472 | $37.29 | $167K |
| 2026-06-29 | 27,824 | $37.29 | $1.0M |
| 2026-06-24 | 5 | $37.49 | $187 |
| 2026-06-15 | 344 | $37.22 | $13K |
| 2026-05-15 | 2 | $37.52 | $75 |
| 2026-05-14 | 2 | $37.89 | $76 |
| 2026-05-13 | 2,114 | $38.29 | $81K |
| 2026-05-04 | 2,387 | $46.72 | $112K |
| 2026-04-29 | 88 | $45.65 | $4K |
| 2026-04-07 | 2,679 | $40.24 | $108K |
| 2026-04-02 | 4,662 | $39.45 | $184K |
| 2026-03-20 | 93 | $42.32 | $4K |
| 2026-03-16 | 25,364 | $42.57 | $1.1M |
| 2026-03-09 | 19 | $41.16 | $782 |
| 2026-03-02 | 122 | $46.61 | $6K |
| 2026-02-27 | 6,081 | $46.65 | $284K |
| 2026-02-26 | 713 | $47.23 | $34K |
| 2026-02-25 | 345 | $45.97 | $16K |
| 2026-02-24 | 2,265 | $45.87 | $104K |
| 2026-02-17 | 14,933 | $44.15 | $659K |
| 2026-02-04 | 5 | $43.74 | $219 |
| 2025-12-29 | 16 | $42.76 | $684 |
Insider trades
SEC Form 4, newest first. JSONInsiders at NSSC reported 4 open-market sells worth $18.3M in the last 90 days and no open-market buys. Latest filing: Soloway Donna Anne (Director) on 2026-08-27.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-08-27 | Soloway Donna Anne | Director | Sell | 21K | $34.62 | $726K | 0 |
| 2026-08-27 | SOLOWAY RICHARD | Founder and Executive Chairman | Sell | 380K | $34.50 | $13.1M | 622K |
| 2026-08-26 | Soloway Donna Anne | Director | Sell | 28K | $35.98 | $1.0M | 21K |
| 2026-08-26 | SOLOWAY RICHARD | Founder and Executive Chairman | Sell | 95K | $35.93 | $3.4M | 1.0M |
| 2026-05-18 | Soloway Donna Anne | Director | Exercise or conversion | 8K | $15.27 | $122K | 27K |
| 2026-05-18 | Soloway Donna Anne | Director | Exercise or conversion | 4K | $26.94 | $108K | 49K |
| 2026-05-18 | Soloway Donna Anne | Director | Exercise or conversion | 10K | $22.93 | $229K | 45K |
| 2026-05-18 | Soloway Donna Anne | Director | Exercise or conversion | 8K | $11.68 | $88K | 35K |
| 2026-05-18 | Soloway Donna Anne | Director | Exercise or conversion | 8K | $8.10 | $65K | 19K |
| 2026-05-18 | Soloway Donna Anne | Director | Exercise or conversion | 4K | $4.35 | $16K | 11K |
| 2026-03-17 | Spinelli Stephen M | Senior Vice President of Sales | Tax withholding | 3K | $43.59 | $140K | 12K |
| 2026-03-17 | Spinelli Stephen M | Senior Vice President of Sales | Exercise or conversion | 14K | $10.02 | $140K | 15K |
| 2026-03-03 | SOLOWAY RICHARD | CEO, Chairman of Board, Secy | Sell | 55K | $43.22 | $2.4M | 1.1M |
| 2026-03-02 | SOLOWAY RICHARD | CEO, Chairman of Board, Secy | Sell | 130K | $44.99 | $5.8M | 1.2M |
| 2026-02-26 | CARRIERI MICHAEL | Executive VP of Engineering | Tax withholding | 7K | $47.23 | $314K | 27K |
| 2026-02-26 | CARRIERI MICHAEL | Executive VP of Engineering | Exercise or conversion | 10K | $22.50 | $225K | 33K |
| 2026-02-19 | BUCHEL KEVIN S | President & COO | Exercise or conversion | 50K | $22.50 | $1.1M | 113K |
| 2026-02-19 | BUCHEL KEVIN S | President & COO | Tax withholding | 34K | $44.98 | $1.5M | 79K |
| 2026-02-19 | BUCHEL KEVIN S | President & COO | Exercise or conversion | 50K | $22.50 | $1.1M | 113K |
| 2026-02-10 | SOLOWAY RICHARD | CEO, Chairman of Board, Secy | Tax withholding | 7K | $42.63 | $306K | 1.3M |
| 2026-02-10 | SOLOWAY RICHARD | CEO, Chairman of Board, Secy | Exercise or conversion | 8K | $26.94 | $216K | 1.3M |
| 2026-02-10 | SOLOWAY RICHARD | CEO, Chairman of Board, Secy | Tax withholding | 75K | $42.63 | $3.2M | 1.3M |
| 2026-02-10 | SOLOWAY RICHARD | CEO, Chairman of Board, Secy | Exercise or conversion | 100K | $22.50 | $2.2M | 1.4M |
| 2026-02-05 | SOLOWAY RICHARD | CEO, Chairman of Board, Secy | Sell | 150K | $42.74 | $6.4M | 1.3M |
| 2025-11-17 | Spinelli Stephen M | Senior Vice president of Sales | Sell | 19K | $40.25 | $765K | 928 |
| 2025-09-17 | CARRIERI MICHAEL | Executive VP of Engineering | Tax withholding | 1K | $42.40 | $54K | 23K |
| 2025-09-17 | CARRIERI MICHAEL | Executive VP of Engineering | Exercise or conversion | 2K | $26.94 | $54K | 25K |
| 2025-09-17 | CARRIERI MICHAEL | Executive VP of Engineering | Tax withholding | 5K | $42.40 | $225K | 23K |
| 2025-09-17 | CARRIERI MICHAEL | Executive VP of Engineering | Exercise or conversion | 10K | $22.50 | $225K | 28K |
| 2025-06-06 | Spinelli Stephen M | Senior Vice President of Sales | Sell | 5K | $29.16 | $146K | 20K |
| 2024-09-12 | BEEBER PAUL STEPHEN | Director | Sell | 708 | $37.12 | $26K | 3K |
| 2024-09-12 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 3K | $26.94 | $81K | 6K |
| 2024-09-12 | BEEBER PAUL STEPHEN | Director | Tax withholding | 2K | $37.58 | $81K | 3K |
| 2024-08-29 | CARRIERI MICHAEL | Executive VP Engineering | Exercise or conversion | 2K | $26.94 | $54K | 18K |
| 2024-06-18 | Spinelli Stephen M | Senior Vice President of Sales | Sell | 435 | $52.10 | $23K | 27K |
| 2024-06-18 | Spinelli Stephen M | Senior Vice President of Sales | Sell | 3K | $52.14 | $134K | 25K |
| 2024-06-18 | BEEBER PAUL STEPHEN | Director | Sell | 860 | $52.04 | $45K | 3K |
| 2024-05-08 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 2K | $11.68 | $18K | 3K |
| 2024-05-08 | SOLOWAY RICHARD | CEO, Chairman, Secy | Sell | 250K | $44.20 | $11.1M | 1.4M |
| 2024-05-08 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 2K | $22.93 | $34K | 4K |
| 2024-05-08 | BEEBER PAUL STEPHEN | Director | Tax withholding | 774 | $44.45 | $34K | 3K |
| 2024-05-08 | BEEBER PAUL STEPHEN | Director | Tax withholding | 394 | $44.45 | $18K | 3K |
| 2024-04-08 | SOLOWAY RICHARD | Pres, CEO, Chairman, Secy | Sell | 50K | $40.75 | $2.0M | 1.7M |
| 2024-03-12 | BUCHEL KEVIN S | Executive Vice President | Sell | 50K | $40.36 | $2.0M | 63K |
| 2024-03-08 | SOLOWAY RICHARD | Pres, CEO, Chairman, Secy | Sell | 2.0M | $40.75 | $81.5M | 1.7M |
| 2024-02-14 | SOLOWAY RICHARD | President, CEO and Secretary | Sell | 28K | $45.12 | $1.3M | 3.7M |
| 2024-02-12 | BUCHEL KEVIN S | Executive Vice President | Sell | 10K | $44.80 | $448K | 113K |
| 2024-02-12 | BUCHEL KEVIN S | Executive Vice President | Tax withholding | 1K | $46.11 | $47K | 123K |
| 2024-02-12 | BUCHEL KEVIN S | Executive Vice President | Exercise or conversion | 4K | $11.68 | $47K | 124K |
| 2024-02-09 | SOLOWAY RICHARD | Chief Executive Officer | Exercise or conversion | 16K | $16.80 | $269K | 3.7M |
| 2024-02-09 | CARRIERI MICHAEL | Senior Vice President | Sell | 5K | $45.92 | $239K | 14K |
| 2024-02-09 | CARRIERI MICHAEL | Senior Vice President | Exercise or conversion | 4K | $26.94 | $108K | 16K |
| 2024-02-09 | CARRIERI MICHAEL | Senior Vice President | Tax withholding | 2K | $45.00 | $108K | 12K |
| 2024-02-09 | Spinelli Stephen M | Senior Vice President of Sales | Tax withholding | 8K | $45.00 | $360K | 28K |
| 2024-02-09 | Spinelli Stephen M | Senior Vice President of Sales | Exercise or conversion | 36K | $10.02 | $360K | 36K |
| 2024-02-09 | BUCHEL KEVIN S | Executive Vice President | Exercise or conversion | 2K | $15.27 | $24K | 119K |
| 2024-02-09 | BUCHEL KEVIN S | Executive Vice President | Tax withholding | 543 | $45.00 | $24K | 119K |
| 2024-02-09 | BUCHEL KEVIN S | Executive Vice President | Exercise or conversion | 2K | $22.50 | $54K | 121K |
| 2024-02-09 | BUCHEL KEVIN S | Executive Vice President | Tax withholding | 1K | $45.00 | $54K | 120K |
| 2024-02-09 | SOLOWAY RICHARD | President, CEO and Secretary | Exercise or conversion | 6K | $4.81 | $29K | 3.7M |
| 2024-02-09 | SOLOWAY RICHARD | President, CEO and Secretary | Exercise or conversion | 16K | $8.08 | $129K | 3.7M |
| 2024-02-07 | BEEBER PAUL STEPHEN | Director | Tax withholding | 792 | $43.43 | $34K | 2K |
| 2024-02-07 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 2K | $22.93 | $34K | 2K |
| 2023-12-14 | CARRIERI MICHAEL | Senior Vice President | Tax withholding | 719 | $34.00 | $24K | 9K |
| 2023-12-14 | CARRIERI MICHAEL | Senior Vice President | Exercise or conversion | 2K | $15.27 | $24K | 10K |
| 2023-12-14 | CARRIERI MICHAEL | Senior Vice President | Exercise or conversion | 30K | $22.50 | $675K | 39K |
| 2023-12-14 | CARRIERI MICHAEL | Senior Vice President | Tax withholding | 20K | $34.00 | $675K | 19K |
| 2023-12-13 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 2K | $15.27 | $24K | 2K |
| 2023-12-13 | BEEBER PAUL STEPHEN | Director | Tax withholding | 740 | $33.03 | $24K | 860 |
| 2023-12-07 | BEEBER PAUL STEPHEN | Director | Sell | 1K | $31.65 | $42K | 0 |
| 2023-11-14 | BEEBER PAUL STEPHEN | Director | Sell | 2K | $26.15 | $57K | 1K |
| 2023-05-17 | BEEBER PAUL STEPHEN | Director | Tax withholding | 671 | $34.20 | $23K | 9K |
| 2023-05-17 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 2K | $11.68 | $18K | 9K |
| 2023-05-17 | BEEBER PAUL STEPHEN | Director | Tax withholding | 512 | $34.20 | $18K | 8K |
| 2023-05-17 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 1K | $22.93 | $23K | 9K |
| 2023-03-16 | BEEBER PAUL STEPHEN | Director | Sell | 3K | $33.42 | $110K | 3K |
| 2023-02-23 | BUCHEL KEVIN S | Executive Vice President | Tax withholding | 3K | $31.86 | $98K | 107K |
| 2023-02-23 | BUCHEL KEVIN S | Executive Vice President | Exercise or conversion | 6K | $15.27 | $98K | 110K |
| 2023-02-23 | BUCHEL KEVIN S | Executive Vice President | Tax withholding | 738 | $31.86 | $24K | 104K |
| 2023-02-23 | BUCHEL KEVIN S | Executive Vice President | Exercise or conversion | 3K | $7.35 | $24K | 105K |
| 2023-02-23 | BUCHEL KEVIN S | Executive Vice President | Tax withholding | 275 | $31.86 | $9K | 102K |
| 2023-02-23 | BUCHEL KEVIN S | Executive Vice President | Exercise or conversion | 2K | $4.38 | $9K | 102K |
| 2023-02-23 | BUCHEL KEVIN S | Executive Vice President | Tax withholding | 6K | $31.86 | $187K | 117K |
| 2023-02-23 | BUCHEL KEVIN S | Executive Vice President | Exercise or conversion | 16K | $11.68 | $187K | 123K |
| 2023-02-21 | CARRIERI MICHAEL | Senior Vice President | Exercise or conversion | 2K | $7.34 | $12K | 7K |
| 2023-02-21 | CARRIERI MICHAEL | Senior Vice President | Exercise or conversion | 2K | $15.27 | $24K | 8K |
| 2023-02-15 | SOLOWAY RICHARD | President, CEO and Secretary | Sell | 288K | $31.50 | $9.1M | 3.7M |
| 2023-02-15 | BUCHEL KEVIN S | Executive Vice President | Sell | 13K | $31.50 | $394K | 100K |
| 2023-02-15 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 2K | $8.10 | $13K | 8K |
| 2023-02-15 | BEEBER PAUL STEPHEN | Director | Tax withholding | 395 | $32.78 | $13K | 7K |
| 2023-02-13 | SOLOWAY RICHARD | President, CEO and Secretary | Sell | 2.0M | $31.50 | $63.4M | 4.0M |
| 2023-02-13 | BUCHEL KEVIN S | Executive Vice President | Sell | 88K | $31.50 | $2.8M | 112K |
| 2022-12-16 | BEEBER PAUL STEPHEN | Director | Sell | 2K | $26.82 | $47K | 7K |
| 2022-12-05 | BEEBER PAUL STEPHEN | Director | Tax withholding | 917 | $26.66 | $24K | 6K |
| 2022-12-05 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 2K | $15.27 | $24K | 7K |
| 2022-12-05 | BEEBER PAUL STEPHEN | Director | Exercise or conversion | 2K | $22.93 | $46K | 8K |
| 2022-12-05 | BEEBER PAUL STEPHEN | Director | Tax withholding | 2K | $26.66 | $46K | 6K |
| 2022-11-30 | CARRIERI MICHAEL | Senior Vice President | Sell | 9K | $26.05 | $234K | 5K |
| 2022-11-23 | CARRIERI MICHAEL | Senior Vice President | Sell | 9K | $26.45 | $238K | 14K |
| 2022-11-23 | BEEBER PAUL STEPHEN | Director | Sell | 2K | $26.10 | $45K | 5K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON8 Form 144 notices on file for NSSC worth $33.6M at the prices reported; 4 in the last 90 days worth $18.3M. Latest: DONNA SOLOWAY filed on 2026-08-27 to sell 20,962 shares ($727K) from 2026-08-27.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-08-27 | DONNA SOLOWAYOfficer, Director | 21K | $727K | 0.059% | 2026-08-27 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-27 | RICHARD SOLOWAYOfficer, Director | 380K | $13.1M | 1.061% | 2026-08-27 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-26 | RICHARD SOLOWAYOfficer, Director | 95K | $3.4M | 0.267% | 2026-08-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-26 | DONNA SOLOWAYOfficer, Director | 28K | $1.0M | 0.078% | 2026-08-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-03 | RICHARD SOLOWAYOfficer, Director | 55K | $2.4M | 0.155% | 2026-03-03 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-02 | RICHARD SOLOWAYOfficer, Director | 130K | $5.8M | 0.364% | 2026-03-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-05 | RICHARD SOLOWAYOfficer, Director | 150K | $6.3M | 0.421% | 2026-02-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-07 | Spinelli Stephen MOfficer | 19K | $789K | 0.053% | 2025-11-10 | Ameriprise Financial |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON3 holders report 5% or more of NSSC in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 15.0% of the class (5,350,443 shares), filed 2026-04-07 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-13 | 13G | Copeland Capital Management, LLCinvestment adviser | 2.1M | 5.8% | 2026-09-30 |
| 2026-07-31 | 13G | Vanguard Capital Managementinvestment adviser | 1.8M | 5.0% | 2026-06-30 |
| 2026-04-07 | 13G/Ano. 4 | BlackRock, Inc.parent holding company | 5.4M | 15.0% | 2026-03-31 |
| 2026-03-27 | 13G/Ano. 3 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding NSSC at their latest 13F. JSON4 of the 30 tracked managers held NSSC at their latest 13F, $47.6M in total at quarter-end prices. Renaissance Technologies is the largest at $15.4M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 2 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Renaissance Technologies | 2026-06-30 | 406K | $15.4M | 0.02% | -31K |
| Point72 Asset Management | 2026-06-30 | 380K | $14.4M | 0.02% | -103K |
| AQR Capital Management | 2026-06-30 | 296K | $11.2M | 0.00% | +11K |
| Two Sigma Investments | 2026-06-30 | 173K | $6.6M | 0.00% | +86K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Napco Security Technologies in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Napco Security Technologies (NSSC), SEC CIK 69633, listed on Nasdaq, classified by the SEC as communications equipment, nec. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-02.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-08-27.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-10-13.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-11-02.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-08-27.JSON and CSV
- Company record
- EDGAR filing index for CIK 69633Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of NSSC is sold short?
2,476,551 shares were held short at the 2026-10-15 settlement, 8.7 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is NSSC's daily short volume?
On 2026-11-02, 662,260 of the 1,240,500 NSSC shares reported to FINRA were sold short, 53.4% of the day's reported volume. Short volume is a flow for one day, not a position.
Does NSSC have fails to deliver?
The SEC's latest file shows 3 NSSC shares failed to deliver at settlement 2026-10-02. Fails are reported per settlement date and published twice a month with a lag.
Are NSSC insiders buying or selling?
Insiders at NSSC reported 4 open-market sells worth $18.3M in the last 90 days and no open-market buys. Latest filing: Soloway Donna Anne (Director) on 2026-08-27.
Have NSSC insiders filed to sell?
8 Form 144 notices on file for NSSC worth $33.6M at the prices reported; 4 in the last 90 days worth $18.3M. Latest: DONNA SOLOWAY filed on 2026-08-27 to sell 20,962 shares ($727K) from 2026-08-27.
Who owns 5% or more of NSSC?
3 holders report 5% or more of NSSC in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 15.0% of the class (5,350,443 shares), filed 2026-04-07 for an event on 2026-03-31.
Which tracked 13F managers own NSSC?
4 of the 30 tracked 13F managers held NSSC shares at their latest filing, $47.6M in all. The largest: Renaissance Technologies (406K shares, $15.4M), Steve Cohen's Point72 Asset Management (380K shares, $14.4M), Cliff Asness's AQR Capital Management (296K shares, $11.2M), Two Sigma Investments (173K shares, $6.6M).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.