NAPCO SEC TECHNOLOGIES INC

Ticker: NSSC CUSIP: 630402105 Class: Common Stock

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 597,918 Value ($000) $24,933 Avg Close $41.96 Range $37.43 - $47.96

Q3 2025

Shares 640,317 Value ($000) $27,502 Avg Close $34.48 Range $29.03 - $44.88

Q2 2025

Shares 642,415 Value ($000) $19,073 Avg Close $25.46 Range $18.78 - $30.03

Q1 2025

Shares 673,261 Value ($000) $15,498 Avg Close $27.92 Range $22.10 - $37.25

Q4 2024

Shares 686,817 Value ($000) $24,423 Avg Close $37.64 Range $31.15 - $41.75

Q3 2024

Shares 679,930 Value ($000) $27,510 Avg Close $47.92 Range $31.06 - $56.76

Q2 2024

Shares 586,822 Value ($000) $30,485 Avg Close $44.67 Range $36.90 - $52.36

Q1 2024

Shares 588,734 Value ($000) $23,644 Avg Close $38.22 Range $30.42 - $45.01

Q4 2023

Shares 576,007 Value ($000) $19,728 Avg Close $25.76 Range $17.23 - $35.09

Q3 2023

Shares 486,208 Value ($000) $10,818 Avg Close $29.36 Range $19.36 - $37.73

Q2 2023

Shares 503,877 Value ($000) $17,459 Avg Close $33.75 Range $25.82 - $39.90

Q1 2023

Shares 414,448 Value ($000) $15,575 Avg Close $30.76 Range $24.89 - $37.87

Q4 2022

Shares 287,632 Value ($000) $7,904 Avg Close $26.04 Range $23.40 - $29.16

Q3 2022

Shares 288,958 Value ($000) $8,403 Avg Close $25.79 Range $19.06 - $30.22

Q2 2022

Shares 303,588 Value ($000) $6,251 Avg Close $18.16 Range $15.06 - $20.96

Q1 2022

Shares 311,179 Value ($000) $6,385 Avg Close $20.05 Range $14.86 - $24.28

Q4 2021

Shares 163,931 Value ($000) $8,194 Avg Close $22.78 Range $20.22 - $25.10

Q3 2021

Shares 167,953 Value ($000) $7,236 Avg Close $18.08 Range $15.95 - $21.96

Q2 2021

Shares 171,703 Value ($000) $6,244 Avg Close $16.55 Range $14.80 - $18.34

Q1 2021

Shares 173,096 Value ($000) $6,028 Avg Close $14.89 Range $12.20 - $17.51

Q4 2020

Shares 157,652 Value ($000) $4,134 Avg Close $13.01 Range $11.05 - $15.30

Q3 2020

Shares 161,830 Value ($000) $3,803 Avg Close $11.63 Range $8.61 - $13.25

Q2 2020

Shares 163,822 Value ($000) $3,832 Avg Close $10.12 Range $6.44 - $12.75

Q1 2020

Shares 164,751 Value ($000) $2,499 Avg Close $11.36 Range $7.07 - $15.97

Q4 2019

Shares 161,865 Value ($000) $4,758 Avg Close $14.00 Range $11.95 - $15.43

Q3 2019

Shares 162,012 Value ($000) $4,135 Avg Close $13.60 Range $11.67 - $16.78

Q2 2019

Shares 147,974 Value ($000) $4,392 Avg Close $12.80 Range $9.65 - $16.85

Q1 2019

Shares 143,340 Value ($000) $2,973 Avg Close $9.07 Range $6.87 - $10.93

Q4 2018

Shares 143,573 Value ($000) $2,262 Avg Close $7.37 Range $6.24 - $8.56

Q3 2018

Shares 144,196 Value ($000) $2,156 Avg Close $7.46 Range $6.23 - $8.42

Q2 2018

Shares 138,229 Value ($000) $2,025 Avg Close $5.70 Range $4.97 - $7.68

Q1 2018

Shares 138,256 Value ($000) $1,618 Avg Close $4.68 Range $4.06 - $5.74

Q4 2017

Shares 142,761 Value ($000) $1,249 Avg Close $4.62 Range $3.81 - $5.18

Q3 2017

Shares 145,798 Value ($000) $1,414 Avg Close $4.31 Range $3.57 - $4.84

Q2 2017

Shares 146,111 Value ($000) $1,373 Avg Close $4.72 Range $4.18 - $5.23

Q1 2017

Shares 34,793 Value ($000) $355 Avg Close $4.49 Range $3.67 - $5.29

Q4 2016

Shares 33,834 Value ($000) $287 Avg Close $3.70 Range $3.32 - $4.13

Q3 2016

Shares 30,808 Value ($000) $221 Avg Close $3.42 Range $3.03 - $3.74

Q2 2016

Shares 30,732 Value ($000) $195 Avg Close $2.95 Range $2.69 - $3.28

Q1 2016

Shares 30,732 Value ($000) $192 Avg Close $2.80 Range $2.44 - $3.09

Q4 2015

Shares 27,955 Value ($000) $165 Avg Close $3.00 Range $2.51 - $3.67

Q3 2015

Shares 27,955 Value ($000) $169 Avg Close $2.80 Range $2.56 - $3.07

Q2 2015

Shares 27,242 Value ($000) $156 Avg Close $2.67 Range $2.39 - $2.97

Q1 2015

Shares 30,289 Value ($000) $175 Avg Close $2.54 Range $2.18 - $2.89

Q4 2014

Shares 34,520 Value ($000) $163 Avg Close $2.14 Range $1.92 - $2.32

Q3 2014

Shares 34,169 Value ($000) $161 Avg Close $2.38 Range $2.06 - $2.70

Q2 2014

Shares 33,878 Value ($000) $184 Avg Close $2.85 Range $2.38 - $3.30

Q1 2014

Shares 33,698 Value ($000) $223 Avg Close $3.29 Range $2.92 - $3.72

Q4 2013

Shares 23,808 Value ($000) $150 Avg Close $2.83 Range $2.34 - $3.17

Q3 2013

Shares 27,158 Value ($000) $144 Avg Close $2.44 Range $2.23 - $2.93

Q2 2013

Shares 30,604 Value ($000) $146 Avg Close $2.09 Range $1.86 - $2.33

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	597,918	$24,933	$41.96	$37.43 - $47.96
Q3 2025	640,317	$27,502	$34.48	$29.03 - $44.88
Q2 2025	642,415	$19,073	$25.46	$18.78 - $30.03
Q1 2025	673,261	$15,498	$27.92	$22.10 - $37.25
Q4 2024	686,817	$24,423	$37.64	$31.15 - $41.75
Q3 2024	679,930	$27,510	$47.92	$31.06 - $56.76
Q2 2024	586,822	$30,485	$44.67	$36.90 - $52.36
Q1 2024	588,734	$23,644	$38.22	$30.42 - $45.01
Q4 2023	576,007	$19,728	$25.76	$17.23 - $35.09
Q3 2023	486,208	$10,818	$29.36	$19.36 - $37.73
Q2 2023	503,877	$17,459	$33.75	$25.82 - $39.90
Q1 2023	414,448	$15,575	$30.76	$24.89 - $37.87
Q4 2022	287,632	$7,904	$26.04	$23.40 - $29.16
Q3 2022	288,958	$8,403	$25.79	$19.06 - $30.22
Q2 2022	303,588	$6,251	$18.16	$15.06 - $20.96
Q1 2022	311,179	$6,385	$20.05	$14.86 - $24.28
Q4 2021	163,931	$8,194	$22.78	$20.22 - $25.10
Q3 2021	167,953	$7,236	$18.08	$15.95 - $21.96
Q2 2021	171,703	$6,244	$16.55	$14.80 - $18.34
Q1 2021	173,096	$6,028	$14.89	$12.20 - $17.51
Q4 2020	157,652	$4,134	$13.01	$11.05 - $15.30
Q3 2020	161,830	$3,803	$11.63	$8.61 - $13.25
Q2 2020	163,822	$3,832	$10.12	$6.44 - $12.75
Q1 2020	164,751	$2,499	$11.36	$7.07 - $15.97
Q4 2019	161,865	$4,758	$14.00	$11.95 - $15.43
Q3 2019	162,012	$4,135	$13.60	$11.67 - $16.78
Q2 2019	147,974	$4,392	$12.80	$9.65 - $16.85
Q1 2019	143,340	$2,973	$9.07	$6.87 - $10.93
Q4 2018	143,573	$2,262	$7.37	$6.24 - $8.56
Q3 2018	144,196	$2,156	$7.46	$6.23 - $8.42
Q2 2018	138,229	$2,025	$5.70	$4.97 - $7.68
Q1 2018	138,256	$1,618	$4.68	$4.06 - $5.74
Q4 2017	142,761	$1,249	$4.62	$3.81 - $5.18
Q3 2017	145,798	$1,414	$4.31	$3.57 - $4.84
Q2 2017	146,111	$1,373	$4.72	$4.18 - $5.23
Q1 2017	34,793	$355	$4.49	$3.67 - $5.29
Q4 2016	33,834	$287	$3.70	$3.32 - $4.13
Q3 2016	30,808	$221	$3.42	$3.03 - $3.74
Q2 2016	30,732	$195	$2.95	$2.69 - $3.28
Q1 2016	30,732	$192	$2.80	$2.44 - $3.09
Q4 2015	27,955	$165	$3.00	$2.51 - $3.67
Q3 2015	27,955	$169	$2.80	$2.56 - $3.07
Q2 2015	27,242	$156	$2.67	$2.39 - $2.97
Q1 2015	30,289	$175	$2.54	$2.18 - $2.89
Q4 2014	34,520	$163	$2.14	$1.92 - $2.32
Q3 2014	34,169	$161	$2.38	$2.06 - $2.70
Q2 2014	33,878	$184	$2.85	$2.38 - $3.30
Q1 2014	33,698	$223	$3.29	$2.92 - $3.72
Q4 2013	23,808	$150	$2.83	$2.34 - $3.17
Q3 2013	27,158	$144	$2.44	$2.23 - $2.93
Q2 2013	30,604	$146	$2.09	$1.86 - $2.33