ALLEGHENY TECHNOLOGIES INC

Ticker: ATI CUSIP: 01741R102 Class: EQTY

BANK OF MONTREAL /CAN/'s Holding History (CIK: 0000927971)

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

Q4 2025

Shares 26,087 Value ($000) $2,994 Avg Close $97.45 Range $79.29 - $117.48

Q3 2025

Shares 27,253 Value ($000) $2,217 Avg Close $81.04 Range $70.42 - $96.20

Q2 2025

Shares 33,648 Value ($000) $2,905 Avg Close $68.45 Range $39.23 - $87.75

Q1 2025

Shares 36,024 Value ($000) $1,874 Avg Close $56.77 Range $49.07 - $66.80

Q4 2024

Shares 89,674 Value ($000) $4,936 Avg Close $58.97 Range $52.45 - $67.09

Q3 2024

Shares 157,254 Value ($000) $10,421 Avg Close $62.09 Range $53.90 - $68.92

Q2 2024

Shares 113,606 Value ($000) $6,302 Avg Close $56.03 Range $47.90 - $62.44

Q1 2024

Shares 50,228 Value ($000) $2,580 Avg Close $45.22 Range $38.04 - $51.95

Q4 2023

Shares 42,313 Value ($000) $1,959 Avg Close $41.52 Range $35.03 - $46.57

Q3 2023

Shares 42,628 Value ($000) $1,900 Avg Close $44.44 Range $41.04 - $47.92

Q2 2023

Shares 151,385 Value ($000) $6,706 Avg Close $38.25 Range $34.10 - $44.39

Q1 2023

Shares 153,268 Value ($000) $6,049 Avg Close $37.76 Range $29.37 - $43.32

Q4 2022

Shares 158,315 Value ($000) $4,837 Avg Close $29.27 Range $25.39 - $31.74

Q3 2022

Shares 158,703 Value ($000) $4,807 Avg Close $27.84 Range $20.52 - $33.31

Q2 2022

Shares 62,935 Value ($000) $1,477 Avg Close $26.35 Range $20.87 - $30.74

Q1 2022

Shares 266,609 Value ($000) $7,345 Avg Close $23.18 Range $16.02 - $28.45

Q4 2021

Shares 310,560 Value ($000) $4,888 Avg Close $16.05 Range $13.85 - $18.33

Q3 2021

Shares 327,016 Value ($000) $5,530 Avg Close $18.91 Range $15.75 - $22.33

Q2 2021

Shares 328,004 Value ($000) $6,825 Avg Close $22.93 Range $20.15 - $25.04

Q1 2021

Shares 152,861 Value ($000) $3,393 Avg Close $19.55 Range $15.97 - $22.87

Q4 2020

Shares 199,471 Value ($000) $3,673 Avg Close $12.70 Range $8.24 - $17.60

Q3 2020

Shares 126,535 Value ($000) $1,156 Avg Close $9.20 Range $8.04 - $11.06

Q2 2020

Shares 81,907 Value ($000) $749 Avg Close $8.67 Range $6.21 - $12.60

Q1 2020

Shares 66,042 Value ($000) $523 Avg Close $15.97 Range $4.95 - $20.91

Q4 2019

Shares 73,093 Value ($000) $1,509 Avg Close $21.68 Range $18.98 - $24.17

Q3 2019

Shares 48,226 Value ($000) $977 Avg Close $21.15 Range $17.03 - $25.66

Q2 2019

Shares 41,100 Value ($000) $1,036 Avg Close $24.37 Range $21.15 - $27.49

Q1 2019

Shares 33,480 Value ($000) $857 Avg Close $26.33 Range $21.00 - $29.50

Q4 2018

Shares 30,670 Value ($000) $667 Avg Close $25.93 Range $20.84 - $29.84

Q3 2018

Shares 31,800 Value ($000) $939 Avg Close $26.89 Range $24.31 - $30.18

Q2 2018

Shares 45,175 Value ($000) $1,135 Avg Close $27.05 Range $22.93 - $29.87

Q1 2018

Shares 57,851 Value ($000) $1,371 Avg Close $26.83 Range $22.70 - $30.25

Q4 2017

Shares 114,785 Value ($000) $2,772 Avg Close $23.80 Range $21.01 - $26.59

Q3 2017

Shares 102,634 Value ($000) $2,453 Avg Close $19.78 Range $16.51 - $24.00

Q2 2017

Shares 8,276 Value ($000) $140 Avg Close $16.82 Range $14.54 - $20.11

Q1 2017

Shares 10,142 Value ($000) $182 Avg Close $18.80 Range $15.61 - $23.69

Q4 2016

Shares 8,866 Value ($000) $155 Avg Close $16.62 Range $13.15 - $19.20

Q3 2016

Shares 8,341 Value ($000) $150 Avg Close $16.54 Range $12.22 - $18.59

Q2 2016

Shares 5,819 Value ($000) $74 Avg Close $14.18 Range $10.81 - $17.83

Q1 2016

Shares 2,726 Value ($000) $45 Avg Close $12.00 Range $6.97 - $18.17

Q4 2015

Shares 4,602 Value ($000) $51 Avg Close $13.45 Range $9.91 - $18.65

Q3 2015

Shares 1,062 Value ($000) $15 Avg Close $20.12 Range $13.34 - $30.02

Q2 2015

Shares 1,320 Value ($000) $40 Avg Close $31.90 Range $27.97 - $36.35

Q1 2015

Shares 13,368 Value ($000) $402 Avg Close $29.80 Range $25.96 - $33.60

Q4 2014

Shares 13,099 Value ($000) $455 Avg Close $31.49 Range $28.73 - $35.21

Q3 2014

Shares 13,508 Value ($000) $500 Avg Close $39.92 Range $34.97 - $43.90

Q2 2014

Shares 9,968 Value ($000) $449 Avg Close $38.68 Range $35.44 - $42.89

Q1 2014

Shares 10,087 Value ($000) $380 Avg Close $31.60 Range $27.91 - $36.14

Q4 2013

Shares 10,519 Value ($000) $375 Avg Close $30.74 Range $27.52 - $33.68

Q3 2013

Shares 10,272 Value ($000) $313 Avg Close $26.04 Range $23.74 - $30.56

Q2 2013

Shares 10,005 Value ($000) $263 Avg Close $26.04 Range $23.70 - $29.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	26,087	$2,994	$97.45	$79.29 - $117.48
Q3 2025	27,253	$2,217	$81.04	$70.42 - $96.20
Q2 2025	33,648	$2,905	$68.45	$39.23 - $87.75
Q1 2025	36,024	$1,874	$56.77	$49.07 - $66.80
Q4 2024	89,674	$4,936	$58.97	$52.45 - $67.09
Q3 2024	157,254	$10,421	$62.09	$53.90 - $68.92
Q2 2024	113,606	$6,302	$56.03	$47.90 - $62.44
Q1 2024	50,228	$2,580	$45.22	$38.04 - $51.95
Q4 2023	42,313	$1,959	$41.52	$35.03 - $46.57
Q3 2023	42,628	$1,900	$44.44	$41.04 - $47.92
Q2 2023	151,385	$6,706	$38.25	$34.10 - $44.39
Q1 2023	153,268	$6,049	$37.76	$29.37 - $43.32
Q4 2022	158,315	$4,837	$29.27	$25.39 - $31.74
Q3 2022	158,703	$4,807	$27.84	$20.52 - $33.31
Q2 2022	62,935	$1,477	$26.35	$20.87 - $30.74
Q1 2022	266,609	$7,345	$23.18	$16.02 - $28.45
Q4 2021	310,560	$4,888	$16.05	$13.85 - $18.33
Q3 2021	327,016	$5,530	$18.91	$15.75 - $22.33
Q2 2021	328,004	$6,825	$22.93	$20.15 - $25.04
Q1 2021	152,861	$3,393	$19.55	$15.97 - $22.87
Q4 2020	199,471	$3,673	$12.70	$8.24 - $17.60
Q3 2020	126,535	$1,156	$9.20	$8.04 - $11.06
Q2 2020	81,907	$749	$8.67	$6.21 - $12.60
Q1 2020	66,042	$523	$15.97	$4.95 - $20.91
Q4 2019	73,093	$1,509	$21.68	$18.98 - $24.17
Q3 2019	48,226	$977	$21.15	$17.03 - $25.66
Q2 2019	41,100	$1,036	$24.37	$21.15 - $27.49
Q1 2019	33,480	$857	$26.33	$21.00 - $29.50
Q4 2018	30,670	$667	$25.93	$20.84 - $29.84
Q3 2018	31,800	$939	$26.89	$24.31 - $30.18
Q2 2018	45,175	$1,135	$27.05	$22.93 - $29.87
Q1 2018	57,851	$1,371	$26.83	$22.70 - $30.25
Q4 2017	114,785	$2,772	$23.80	$21.01 - $26.59
Q3 2017	102,634	$2,453	$19.78	$16.51 - $24.00
Q2 2017	8,276	$140	$16.82	$14.54 - $20.11
Q1 2017	10,142	$182	$18.80	$15.61 - $23.69
Q4 2016	8,866	$155	$16.62	$13.15 - $19.20
Q3 2016	8,341	$150	$16.54	$12.22 - $18.59
Q2 2016	5,819	$74	$14.18	$10.81 - $17.83
Q1 2016	2,726	$45	$12.00	$6.97 - $18.17
Q4 2015	4,602	$51	$13.45	$9.91 - $18.65
Q3 2015	1,062	$15	$20.12	$13.34 - $30.02
Q2 2015	1,320	$40	$31.90	$27.97 - $36.35
Q1 2015	13,368	$402	$29.80	$25.96 - $33.60
Q4 2014	13,099	$455	$31.49	$28.73 - $35.21
Q3 2014	13,508	$500	$39.92	$34.97 - $43.90
Q2 2014	9,968	$449	$38.68	$35.44 - $42.89
Q1 2014	10,087	$380	$31.60	$27.91 - $36.14
Q4 2013	10,519	$375	$30.74	$27.52 - $33.68
Q3 2013	10,272	$313	$26.04	$23.74 - $30.56
Q2 2013	10,005	$263	$26.04	$23.70 - $29.42