COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

AMG National Trust Bank's Holding History (CIK: 0001388829)

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

Q4 2025

Shares 4,556 Value ($000) $3,929 Avg Close $905.73 Range $844.06 - $962.64

Q3 2025

Shares 4,562 Value ($000) $4,223 Avg Close $956.70 Range $902.01 - $997.89

Q2 2025

Shares 4,792 Value ($000) $4,744 Avg Close $990.72 Range $868.14 - $1064.10

Q1 2025

Shares 4,818 Value ($000) $4,557 Avg Close $970.56 Range $877.95 - $1073.82

Q4 2024

Shares 4,449 Value ($000) $4,080 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 4,437 Value ($000) $3,934 Avg Close $861.91 Range $787.84 - $917.81

Q2 2024

Shares 4,765 Value ($000) $4,050 Avg Close $773.82 Range $690.64 - $867.04

Q1 2024

Shares 4,326 Value ($000) $3,169 Avg Close $706.75 Range $633.49 - $779.59

Q4 2023

Shares 4,313 Value ($000) $2,847 Avg Close $573.49 Range $521.47 - $661.25

Q3 2023

Shares 4,315 Value ($000) $2,438 Avg Close $532.21 Range $505.45 - $552.31

Q2 2023

Shares 4,359 Value ($000) $2,347 Avg Close $487.14 Range $459.09 - $519.84

Q1 2023

Shares 4,357 Value ($000) $2,165 Avg Close $471.27 Range $429.88 - $509.61

Q4 2022

Shares 4,515 Value ($000) $2,061 Avg Close $468.77 Range $430.19 - $520.75

Q3 2022

Shares 4,598 Value ($000) $2,172 Avg Close $498.08 Range $444.08 - $541.06

Q2 2022

Shares 4,003 Value ($000) $2,130 Avg Close $484.91 Range $388.78 - $584.62

Q1 2022

Shares 4,132 Value ($000) $2,380 Avg Close $500.83 Range $447.15 - $559.84

Q4 2021

Shares 4,134 Value ($000) $2,347 Avg Close $488.10 Range $415.17 - $544.86

Q3 2021

Shares 3,667 Value ($000) $1,648 Avg Close $418.22 Range $374.22 - $447.84

Q2 2021

Shares 3,473 Value ($000) $1,374 Avg Close $359.04 Range $333.36 - $380.48

Q1 2021

Shares 3,432 Value ($000) $1,210 Avg Close $329.77 Range $291.05 - $361.01

Q4 2020

Shares 8,741 Value ($000) $3,293 Avg Close $347.39 Range $324.71 - $367.18

Q3 2020

Shares 8,501 Value ($000) $3,018 Avg Close $309.06 Range $276.17 - $334.67

Q2 2020

Shares 9,466 Value ($000) $2,870 Avg Close $279.18 Range $257.36 - $295.59

Q1 2017

Shares 4,496 Value ($000) $754 Avg Close $142.87 Range $134.91 - $152.51

Q4 2016

Shares 4,376 Value ($000) $701 Avg Close $129.79 Range $120.95 - $140.39

Q3 2016

Shares 4,195 Value ($000) $640 Avg Close $136.95 Range $124.90 - $143.90

Q2 2016

Shares 4,122 Value ($000) $647 Avg Close $128.04 Range $117.26 - $134.37

Q1 2016

Shares 4,124 Value ($000) $650 Avg Close $127.74 Range $119.17 - $135.67

Q4 2015

Shares 4,404 Value ($000) $711 Avg Close $132.84 Range $119.34 - $142.82

Q3 2015

Shares 4,478 Value ($000) $647 Avg Close $119.60 Range $98.22 - $123.53

Q2 2015

Shares 4,827 Value ($000) $652 Avg Close $120.23 Range $112.77 - $127.67

Q1 2015

Shares 4,644 Value ($000) $704 Avg Close $120.91 Range $111.40 - $128.73

Q4 2014

Shares 4,706 Value ($000) $667 Avg Close $109.42 Range $98.12 - $118.34

Q3 2014

Shares 10,078 Value ($000) $1,263 Avg Close $97.13 Range $92.09 - $102.72

Q2 2014

Shares 10,241 Value ($000) $1,179 Avg Close $91.81 Range $88.18 - $95.25

Q1 2014

Shares 10,336 Value ($000) $1,154 Avg Close $91.29 Range $87.26 - $95.07

Q4 2013

Shares 10,287 Value ($000) $1,224 Avg Close $95.15 Range $87.55 - $100.50

Q3 2013

Shares 10,212 Value ($000) $1,176 Avg Close $91.64 Range $87.25 - $95.29

Q2 2013

Shares 10,468 Value ($000) $1,157 Avg Close $86.56 Range $81.59 - $91.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	4,556	$3,929	$905.73	$844.06 - $962.64
Q3 2025	4,562	$4,223	$956.70	$902.01 - $997.89
Q2 2025	4,792	$4,744	$990.72	$868.14 - $1064.10
Q1 2025	4,818	$4,557	$970.56	$877.95 - $1073.82
Q4 2024	4,449	$4,080	$922.64	$861.51 - $1003.02
Q3 2024	4,437	$3,934	$861.91	$787.84 - $917.81
Q2 2024	4,765	$4,050	$773.82	$690.64 - $867.04
Q1 2024	4,326	$3,169	$706.75	$633.49 - $779.59
Q4 2023	4,313	$2,847	$573.49	$521.47 - $661.25
Q3 2023	4,315	$2,438	$532.21	$505.45 - $552.31
Q2 2023	4,359	$2,347	$487.14	$459.09 - $519.84
Q1 2023	4,357	$2,165	$471.27	$429.88 - $509.61
Q4 2022	4,515	$2,061	$468.77	$430.19 - $520.75
Q3 2022	4,598	$2,172	$498.08	$444.08 - $541.06
Q2 2022	4,003	$2,130	$484.91	$388.78 - $584.62
Q1 2022	4,132	$2,380	$500.83	$447.15 - $559.84
Q4 2021	4,134	$2,347	$488.10	$415.17 - $544.86
Q3 2021	3,667	$1,648	$418.22	$374.22 - $447.84
Q2 2021	3,473	$1,374	$359.04	$333.36 - $380.48
Q1 2021	3,432	$1,210	$329.77	$291.05 - $361.01
Q4 2020	8,741	$3,293	$347.39	$324.71 - $367.18
Q3 2020	8,501	$3,018	$309.06	$276.17 - $334.67
Q2 2020	9,466	$2,870	$279.18	$257.36 - $295.59
Q1 2017	4,496	$754	$142.87	$134.91 - $152.51
Q4 2016	4,376	$701	$129.79	$120.95 - $140.39
Q3 2016	4,195	$640	$136.95	$124.90 - $143.90
Q2 2016	4,122	$647	$128.04	$117.26 - $134.37
Q1 2016	4,124	$650	$127.74	$119.17 - $135.67
Q4 2015	4,404	$711	$132.84	$119.34 - $142.82
Q3 2015	4,478	$647	$119.60	$98.22 - $123.53
Q2 2015	4,827	$652	$120.23	$112.77 - $127.67
Q1 2015	4,644	$704	$120.91	$111.40 - $128.73
Q4 2014	4,706	$667	$109.42	$98.12 - $118.34
Q3 2014	10,078	$1,263	$97.13	$92.09 - $102.72
Q2 2014	10,241	$1,179	$91.81	$88.18 - $95.25
Q1 2014	10,336	$1,154	$91.29	$87.26 - $95.07
Q4 2013	10,287	$1,224	$95.15	$87.55 - $100.50
Q3 2013	10,212	$1,176	$91.64	$87.25 - $95.29
Q2 2013	10,468	$1,157	$86.56	$81.59 - $91.78