ALLEGHENY TECHNOLOGIES INC

Ticker: ATI CUSIP: 01741R102 Class: EQTY

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q4 2025

Shares 306,517 Value ($000) $35,176 Avg Close $97.45 Range $79.29 - $117.48

Q3 2025

Shares 271,768 Value ($000) $22,106 Avg Close $81.04 Range $70.42 - $96.20

Q2 2025

Shares 201,028 Value ($000) $17,357 Avg Close $68.45 Range $39.23 - $87.75

Q1 2025

Shares 216,148 Value ($000) $11,246 Avg Close $56.77 Range $49.07 - $66.80

Q4 2024

Shares 416,750 Value ($000) $22,938 Avg Close $58.97 Range $52.45 - $67.09

Q3 2024

Shares 429,263 Value ($000) $28,722 Avg Close $62.09 Range $53.90 - $68.92

Q2 2024

Shares 456,617 Value ($000) $25,319 Avg Close $56.03 Range $47.90 - $62.44

Q1 2024

Shares 5,243,558 Value ($000) $268,313 Avg Close $45.22 Range $38.04 - $51.95

Q4 2023

Shares 3,167,131 Value ($000) $144,009 Avg Close $41.52 Range $35.03 - $46.57

Q3 2023

Shares 3,161,699 Value ($000) $130,104 Avg Close $44.44 Range $41.04 - $47.92

Q2 2023

Shares 4,175,322 Value ($000) $184,674 Avg Close $38.25 Range $34.10 - $44.39

Q1 2023

Shares 4,197,947 Value ($000) $165,651 Avg Close $37.76 Range $29.37 - $43.32

Q4 2022

Shares 7,041,867 Value ($000) $210,270 Avg Close $29.27 Range $25.39 - $31.74

Q3 2022

Shares 7,409,123 Value ($000) $197,157 Avg Close $27.84 Range $20.52 - $33.31

Q2 2022

Shares 7,330,702 Value ($000) $166,480 Avg Close $26.35 Range $20.87 - $30.74

Q1 2022

Shares 177,440 Value ($000) $4,762 Avg Close $23.18 Range $16.02 - $28.45

Q4 2021

Shares 180,758 Value ($000) $2,879 Avg Close $16.05 Range $13.85 - $18.33

Q3 2021

Shares 180,503 Value ($000) $3,002 Avg Close $18.91 Range $15.75 - $22.33

Q2 2021

Shares 188,963 Value ($000) $3,940 Avg Close $22.93 Range $20.15 - $25.04

Q1 2021

Shares 178,425 Value ($000) $3,758 Avg Close $19.55 Range $15.97 - $22.87

Q4 2020

Shares 178,274 Value ($000) $2,990 Avg Close $12.70 Range $8.24 - $17.60

Q3 2020

Shares 186,883 Value ($000) $1,630 Avg Close $9.20 Range $8.04 - $11.06

Q2 2020

Shares 304,891 Value ($000) $3,107 Avg Close $8.67 Range $6.21 - $12.60

Q1 2020

Shares 303,311 Value ($000) $2,578 Avg Close $15.97 Range $4.95 - $20.91

Q4 2019

Shares 320,071 Value ($000) $6,613 Avg Close $21.68 Range $18.98 - $24.17

Q3 2019

Shares 320,231 Value ($000) $6,485 Avg Close $21.15 Range $17.03 - $25.66

Q2 2019

Shares 319,621 Value ($000) $8,054 Avg Close $24.37 Range $21.15 - $27.49

Q1 2019

Shares 320,602 Value ($000) $8,198 Avg Close $26.33 Range $21.00 - $29.50

Q4 2018

Shares 319,212 Value ($000) $6,949 Avg Close $25.93 Range $20.84 - $29.84

Q3 2018

Shares 176,815 Value ($000) $5,225 Avg Close $26.89 Range $24.31 - $30.18

Q2 2018

Shares 176,885 Value ($000) $4,443 Avg Close $27.05 Range $22.93 - $29.87

Q1 2018

Shares 190,340 Value ($000) $4,507 Avg Close $26.83 Range $22.70 - $30.25

Q4 2017

Shares 166,280 Value ($000) $4,014 Avg Close $23.80 Range $21.01 - $26.59

Q3 2017

Shares 156,180 Value ($000) $3,733 Avg Close $19.78 Range $16.51 - $24.00

Q2 2017

Shares 156,300 Value ($000) $2,659 Avg Close $16.82 Range $14.54 - $20.11

Q1 2017

Shares 163,730 Value ($000) $2,941 Avg Close $18.80 Range $15.61 - $23.69

Q4 2016

Shares 142,130 Value ($000) $2,264 Avg Close $16.62 Range $13.15 - $19.20

Q3 2016

Shares 172,435 Value ($000) $3,116 Avg Close $16.54 Range $12.22 - $18.59

Q2 2016

Shares 169,950 Value ($000) $2,167 Avg Close $14.18 Range $10.81 - $17.83

Q1 2016

Shares 47,465 Value ($000) $774 Avg Close $12.00 Range $6.97 - $18.17

Q4 2015

Shares 47,790 Value ($000) $538 Avg Close $13.45 Range $9.91 - $18.65

Q3 2015

Shares 84,900 Value ($000) $1,204 Avg Close $20.12 Range $13.34 - $30.02

Q2 2015

Shares 194,168 Value ($000) $5,864 Avg Close $31.90 Range $27.97 - $36.35

Q1 2015

Shares 257,199 Value ($000) $7,719 Avg Close $29.80 Range $25.96 - $33.60

Q4 2014

Shares 203,640 Value ($000) $7,081 Avg Close $31.49 Range $28.73 - $35.21

Q3 2014

Shares 205,884 Value ($000) $7,638 Avg Close $39.92 Range $34.97 - $43.90

Q2 2014

Shares 205,408 Value ($000) $9,264 Avg Close $38.68 Range $35.44 - $42.89

Q1 2014

Shares 270,512 Value ($000) $10,193 Avg Close $31.60 Range $27.91 - $36.14

Q4 2013

Shares 196,946 Value ($000) $7,017 Avg Close $30.74 Range $27.52 - $33.68

Q3 2013

Shares 203,896 Value ($000) $6,223 Avg Close $26.04 Range $23.74 - $30.56

Q2 2013

Shares 425,505 Value ($000) $11,195 Avg Close $26.04 Range $23.70 - $29.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	306,517	$35,176	$97.45	$79.29 - $117.48
Q3 2025	271,768	$22,106	$81.04	$70.42 - $96.20
Q2 2025	201,028	$17,357	$68.45	$39.23 - $87.75
Q1 2025	216,148	$11,246	$56.77	$49.07 - $66.80
Q4 2024	416,750	$22,938	$58.97	$52.45 - $67.09
Q3 2024	429,263	$28,722	$62.09	$53.90 - $68.92
Q2 2024	456,617	$25,319	$56.03	$47.90 - $62.44
Q1 2024	5,243,558	$268,313	$45.22	$38.04 - $51.95
Q4 2023	3,167,131	$144,009	$41.52	$35.03 - $46.57
Q3 2023	3,161,699	$130,104	$44.44	$41.04 - $47.92
Q2 2023	4,175,322	$184,674	$38.25	$34.10 - $44.39
Q1 2023	4,197,947	$165,651	$37.76	$29.37 - $43.32
Q4 2022	7,041,867	$210,270	$29.27	$25.39 - $31.74
Q3 2022	7,409,123	$197,157	$27.84	$20.52 - $33.31
Q2 2022	7,330,702	$166,480	$26.35	$20.87 - $30.74
Q1 2022	177,440	$4,762	$23.18	$16.02 - $28.45
Q4 2021	180,758	$2,879	$16.05	$13.85 - $18.33
Q3 2021	180,503	$3,002	$18.91	$15.75 - $22.33
Q2 2021	188,963	$3,940	$22.93	$20.15 - $25.04
Q1 2021	178,425	$3,758	$19.55	$15.97 - $22.87
Q4 2020	178,274	$2,990	$12.70	$8.24 - $17.60
Q3 2020	186,883	$1,630	$9.20	$8.04 - $11.06
Q2 2020	304,891	$3,107	$8.67	$6.21 - $12.60
Q1 2020	303,311	$2,578	$15.97	$4.95 - $20.91
Q4 2019	320,071	$6,613	$21.68	$18.98 - $24.17
Q3 2019	320,231	$6,485	$21.15	$17.03 - $25.66
Q2 2019	319,621	$8,054	$24.37	$21.15 - $27.49
Q1 2019	320,602	$8,198	$26.33	$21.00 - $29.50
Q4 2018	319,212	$6,949	$25.93	$20.84 - $29.84
Q3 2018	176,815	$5,225	$26.89	$24.31 - $30.18
Q2 2018	176,885	$4,443	$27.05	$22.93 - $29.87
Q1 2018	190,340	$4,507	$26.83	$22.70 - $30.25
Q4 2017	166,280	$4,014	$23.80	$21.01 - $26.59
Q3 2017	156,180	$3,733	$19.78	$16.51 - $24.00
Q2 2017	156,300	$2,659	$16.82	$14.54 - $20.11
Q1 2017	163,730	$2,941	$18.80	$15.61 - $23.69
Q4 2016	142,130	$2,264	$16.62	$13.15 - $19.20
Q3 2016	172,435	$3,116	$16.54	$12.22 - $18.59
Q2 2016	169,950	$2,167	$14.18	$10.81 - $17.83
Q1 2016	47,465	$774	$12.00	$6.97 - $18.17
Q4 2015	47,790	$538	$13.45	$9.91 - $18.65
Q3 2015	84,900	$1,204	$20.12	$13.34 - $30.02
Q2 2015	194,168	$5,864	$31.90	$27.97 - $36.35
Q1 2015	257,199	$7,719	$29.80	$25.96 - $33.60
Q4 2014	203,640	$7,081	$31.49	$28.73 - $35.21
Q3 2014	205,884	$7,638	$39.92	$34.97 - $43.90
Q2 2014	205,408	$9,264	$38.68	$35.44 - $42.89
Q1 2014	270,512	$10,193	$31.60	$27.91 - $36.14
Q4 2013	196,946	$7,017	$30.74	$27.52 - $33.68
Q3 2013	203,896	$6,223	$26.04	$23.74 - $30.56
Q2 2013	425,505	$11,195	$26.04	$23.70 - $29.42