AMERICAN TOWER CORP NEW

Ticker: AMT CUSIP: 03027X100 Class: COM

BROWN BROTHERS HARRIMAN & CO's Holding History (CIK: 0000014661)

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

Q4 2025

Shares 14,893 Value ($000) $2,615 Avg Close $180.30 Range $169.12 - $192.63

Q3 2025

Shares 20,204 Value ($000) $3,886 Avg Close $204.56 Range $185.10 - $230.04

Q2 2025

Shares 22,443 Value ($000) $4,960 Avg Close $210.37 Range $190.80 - $225.87

Q1 2025

Shares 22,594 Value ($000) $4,916 Avg Close $189.52 Range $166.66 - $212.16

Q4 2024

Shares 26,815 Value ($000) $4,918 Avg Close $198.35 Range $171.45 - $222.90

Q3 2024

Shares 60,269 Value ($000) $14,016 Avg Close $210.79 Range $182.10 - $231.55

Q2 2024

Shares 76,903 Value ($000) $14,948 Avg Close $176.27 Range $160.72 - $190.06

Q1 2024

Shares 191,929 Value ($000) $37,923 Avg Close $186.13 Range $169.29 - $204.74

Q4 2023

Shares 206,135 Value ($000) $44,500 Avg Close $175.15 Range $141.88 - $204.01

Q3 2023

Shares 205,709 Value ($000) $33,829 Avg Close $167.65 Range $145.17 - $184.31

Q2 2023

Shares 210,636 Value ($000) $40,851 Avg Close $178.08 Range $162.53 - $192.95

Q1 2023

Shares 202,463 Value ($000) $41,371 Avg Close $189.59 Range $171.12 - $212.87

Q4 2022

Shares 183,889 Value ($000) $38,959 Avg Close $186.71 Range $159.82 - $204.49

Q3 2022

Shares 137,707 Value ($000) $29,566 Avg Close $228.80 Range $188.24 - $251.54

Q2 2022

Shares 130,471 Value ($000) $33,347 Avg Close $222.20 Range $196.54 - $240.37

Q1 2022

Shares 130,802 Value ($000) $32,860 Avg Close $214.86 Range $193.72 - $257.60

Q4 2021

Shares 133,797 Value ($000) $39,136 Avg Close $239.48 Range $222.02 - $259.23

Q3 2021

Shares 130,712 Value ($000) $34,692 Avg Close $248.67 Range $232.43 - $264.88

Q2 2021

Shares 128,897 Value ($000) $34,820 Avg Close $221.28 Range $204.65 - $239.67

Q1 2021

Shares 130,545 Value ($000) $31,208 Avg Close $192.28 Range $170.54 - $209.67

Q4 2020

Shares 131,408 Value ($000) $29,496 Avg Close $199.71 Range $184.97 - $217.31

Q3 2020

Shares 190,127 Value ($000) $45,959 Avg Close $216.72 Range $200.88 - $232.60

Q2 2020

Shares 190,102 Value ($000) $49,149 Avg Close $210.56 Range $171.21 - $229.12

Q1 2020

Shares 191,558 Value ($000) $41,712 Avg Close $197.22 Range $147.72 - $219.16

Q4 2019

Shares 193,390 Value ($000) $44,445 Avg Close $183.82 Range $171.19 - $195.06

Q3 2019

Shares 193,740 Value ($000) $42,842 Avg Close $183.38 Range $167.57 - $203.29

Q2 2019

Shares 195,876 Value ($000) $40,047 Avg Close $168.17 Range $157.69 - $183.80

Q1 2019

Shares 227,142 Value ($000) $44,761 Avg Close $146.03 Range $128.16 - $164.30

Q4 2018

Shares 223,857 Value ($000) $35,412 Avg Close $129.50 Range $116.26 - $139.59

Q3 2018

Shares 223,502 Value ($000) $32,475 Avg Close $120.79 Range $114.07 - $125.11

Q2 2018

Shares 223,240 Value ($000) $32,185 Avg Close $113.83 Range $109.35 - $119.75

Q1 2018

Shares 223,240 Value ($000) $32,446 Avg Close $114.77 Range $106.21 - $122.30

Q4 2017

Shares 225,206 Value ($000) $32,130 Avg Close $115.75 Range $109.97 - $125.87

Q3 2017

Shares 223,364 Value ($000) $30,529 Avg Close $112.31 Range $105.52 - $119.95

Q2 2017

Shares 224,364 Value ($000) $29,688 Avg Close $102.88 Range $96.18 - $110.06

Q1 2017

Shares 224,564 Value ($000) $27,294 Avg Close $87.85 Range $81.86 - $97.31

Q4 2016

Shares 171,014 Value ($000) $18,073 Avg Close $86.33 Range $79.20 - $93.79

Q3 2016

Shares 170,439 Value ($000) $19,316 Avg Close $90.38 Range $85.02 - $93.47

Q2 2016

Shares 170,439 Value ($000) $19,364 Avg Close $83.75 Range $79.73 - $89.81

Q1 2016

Shares 171,112 Value ($000) $17,517 Avg Close $73.16 Range $65.02 - $80.56

Q4 2015

Shares 171,112 Value ($000) $16,589 Avg Close $75.94 Range $67.91 - $81.06

Q3 2015

Shares 109,047 Value ($000) $9,594 Avg Close $72.97 Range $67.60 - $78.65

Q2 2015

Shares 108,046 Value ($000) $10,080 Avg Close $72.97 Range $70.92 - $75.72

Q1 2015

Shares 108,780 Value ($000) $10,242 Avg Close $74.63 Range $71.55 - $78.20

Q4 2014

Shares 108,413 Value ($000) $10,717 Avg Close $75.17 Range $68.98 - $81.29

Q3 2014

Shares 108,505 Value ($000) $10,159 Avg Close $72.53 Range $67.84 - $76.11

Q2 2014

Shares 107,796 Value ($000) $9,699 Avg Close $65.68 Range $60.55 - $68.85

Q1 2014

Shares 107,696 Value ($000) $8,817 Avg Close $61.59 Range $59.25 - $64.17

Q4 2013

Shares 106,921 Value ($000) $8,534 Avg Close $58.52 Range $53.88 - $61.27

Q3 2013

Shares 6,111 Value ($000) $453 Avg Close $54.19 Range $50.94 - $58.77

Q2 2013

Shares 12,492 Value ($000) $914 Avg Close $59.51 Range $52.17 - $63.74

Q1 2013

Shares 6,373 Value ($000) $490 Avg Close $57.28 Range $54.06 - $59.59

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	14,893	$2,615	$180.30	$169.12 - $192.63
Q3 2025	20,204	$3,886	$204.56	$185.10 - $230.04
Q2 2025	22,443	$4,960	$210.37	$190.80 - $225.87
Q1 2025	22,594	$4,916	$189.52	$166.66 - $212.16
Q4 2024	26,815	$4,918	$198.35	$171.45 - $222.90
Q3 2024	60,269	$14,016	$210.79	$182.10 - $231.55
Q2 2024	76,903	$14,948	$176.27	$160.72 - $190.06
Q1 2024	191,929	$37,923	$186.13	$169.29 - $204.74
Q4 2023	206,135	$44,500	$175.15	$141.88 - $204.01
Q3 2023	205,709	$33,829	$167.65	$145.17 - $184.31
Q2 2023	210,636	$40,851	$178.08	$162.53 - $192.95
Q1 2023	202,463	$41,371	$189.59	$171.12 - $212.87
Q4 2022	183,889	$38,959	$186.71	$159.82 - $204.49
Q3 2022	137,707	$29,566	$228.80	$188.24 - $251.54
Q2 2022	130,471	$33,347	$222.20	$196.54 - $240.37
Q1 2022	130,802	$32,860	$214.86	$193.72 - $257.60
Q4 2021	133,797	$39,136	$239.48	$222.02 - $259.23
Q3 2021	130,712	$34,692	$248.67	$232.43 - $264.88
Q2 2021	128,897	$34,820	$221.28	$204.65 - $239.67
Q1 2021	130,545	$31,208	$192.28	$170.54 - $209.67
Q4 2020	131,408	$29,496	$199.71	$184.97 - $217.31
Q3 2020	190,127	$45,959	$216.72	$200.88 - $232.60
Q2 2020	190,102	$49,149	$210.56	$171.21 - $229.12
Q1 2020	191,558	$41,712	$197.22	$147.72 - $219.16
Q4 2019	193,390	$44,445	$183.82	$171.19 - $195.06
Q3 2019	193,740	$42,842	$183.38	$167.57 - $203.29
Q2 2019	195,876	$40,047	$168.17	$157.69 - $183.80
Q1 2019	227,142	$44,761	$146.03	$128.16 - $164.30
Q4 2018	223,857	$35,412	$129.50	$116.26 - $139.59
Q3 2018	223,502	$32,475	$120.79	$114.07 - $125.11
Q2 2018	223,240	$32,185	$113.83	$109.35 - $119.75
Q1 2018	223,240	$32,446	$114.77	$106.21 - $122.30
Q4 2017	225,206	$32,130	$115.75	$109.97 - $125.87
Q3 2017	223,364	$30,529	$112.31	$105.52 - $119.95
Q2 2017	224,364	$29,688	$102.88	$96.18 - $110.06
Q1 2017	224,564	$27,294	$87.85	$81.86 - $97.31
Q4 2016	171,014	$18,073	$86.33	$79.20 - $93.79
Q3 2016	170,439	$19,316	$90.38	$85.02 - $93.47
Q2 2016	170,439	$19,364	$83.75	$79.73 - $89.81
Q1 2016	171,112	$17,517	$73.16	$65.02 - $80.56
Q4 2015	171,112	$16,589	$75.94	$67.91 - $81.06
Q3 2015	109,047	$9,594	$72.97	$67.60 - $78.65
Q2 2015	108,046	$10,080	$72.97	$70.92 - $75.72
Q1 2015	108,780	$10,242	$74.63	$71.55 - $78.20
Q4 2014	108,413	$10,717	$75.17	$68.98 - $81.29
Q3 2014	108,505	$10,159	$72.53	$67.84 - $76.11
Q2 2014	107,796	$9,699	$65.68	$60.55 - $68.85
Q1 2014	107,696	$8,817	$61.59	$59.25 - $64.17
Q4 2013	106,921	$8,534	$58.52	$53.88 - $61.27
Q3 2013	6,111	$453	$54.19	$50.94 - $58.77
Q2 2013	12,492	$914	$59.51	$52.17 - $63.74
Q1 2013	6,373	$490	$57.28	$54.06 - $59.59