ALLEGHENY TECHNOLOGIES INC

Ticker: ATI CUSIP: 01741R102 Class: EQTY

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q4 2025

Shares 147,969 Value ($000) $17 Avg Close $97.45 Range $79.29 - $117.48

Q3 2025

Shares 150,001 Value ($000) $12 Avg Close $81.04 Range $70.42 - $96.20

Q2 2025

Shares 143,428 Value ($000) $12 Avg Close $68.45 Range $39.23 - $87.75

Q1 2025

Shares 144,155 Value ($000) $8 Avg Close $56.77 Range $49.07 - $66.80

Q4 2024

Shares 157,828 Value ($000) $9 Avg Close $58.97 Range $52.45 - $67.09

Q3 2024

Shares 157,480 Value ($000) $11 Avg Close $62.09 Range $53.90 - $68.92

Q2 2024

Shares 153,720 Value ($000) $9 Avg Close $56.03 Range $47.90 - $62.44

Q1 2024

Shares 168,311 Value ($000) $9 Avg Close $45.22 Range $38.04 - $51.95

Q4 2023

Shares 175,709 Value ($000) $8 Avg Close $41.52 Range $35.03 - $46.57

Q3 2023

Shares 173,111 Value ($000) $7 Avg Close $44.44 Range $41.04 - $47.92

Q2 2023

Shares 178,941 Value ($000) $8 Avg Close $38.25 Range $34.10 - $44.39

Q1 2023

Shares 180,541 Value ($000) $7 Avg Close $37.76 Range $29.37 - $43.32

Q4 2022

Shares 181,741 Value ($000) $5 Avg Close $29.27 Range $25.39 - $31.74

Q3 2022

Shares 181,741 Value ($000) $4,836 Avg Close $27.84 Range $20.52 - $33.31

Q2 2022

Shares 181,741 Value ($000) $4,127 Avg Close $26.35 Range $20.87 - $30.74

Q1 2022

Shares 182,541 Value ($000) $4,899 Avg Close $23.18 Range $16.02 - $28.45

Q4 2021

Shares 182,541 Value ($000) $2,908 Avg Close $16.05 Range $13.85 - $18.33

Q3 2021

Shares 183,041 Value ($000) $3,044 Avg Close $18.91 Range $15.75 - $22.33

Q2 2021

Shares 183,041 Value ($000) $3,816 Avg Close $22.93 Range $20.15 - $25.04

Q1 2021

Shares 200,241 Value ($000) $4,217 Avg Close $19.55 Range $15.97 - $22.87

Q4 2020

Shares 216,641 Value ($000) $3,633 Avg Close $12.70 Range $8.24 - $17.60

Q3 2020

Shares 231,541 Value ($000) $2,019 Avg Close $9.20 Range $8.04 - $11.06

Q2 2020

Shares 190,141 Value ($000) $1,938 Avg Close $8.67 Range $6.21 - $12.60

Q1 2020

Shares 185,841 Value ($000) $1,580 Avg Close $15.97 Range $4.95 - $20.91

Q4 2019

Shares 189,041 Value ($000) $3,906 Avg Close $21.68 Range $18.98 - $24.17

Q3 2019

Shares 189,041 Value ($000) $3,828 Avg Close $21.15 Range $17.03 - $25.66

Q2 2019

Shares 189,041 Value ($000) $4,764 Avg Close $24.37 Range $21.15 - $27.49

Q1 2019

Shares 189,041 Value ($000) $4,834 Avg Close $26.33 Range $21.00 - $29.50

Q4 2018

Shares 185,841 Value ($000) $4,046 Avg Close $25.93 Range $20.84 - $29.84

Q3 2018

Shares 185,941 Value ($000) $5,495 Avg Close $26.89 Range $24.31 - $30.18

Q2 2018

Shares 187,341 Value ($000) $4,706 Avg Close $27.05 Range $22.93 - $29.87

Q1 2018

Shares 188,618 Value ($000) $4,466 Avg Close $26.83 Range $22.70 - $30.25

Q4 2017

Shares 188,618 Value ($000) $4,553 Avg Close $23.80 Range $21.01 - $26.59

Q3 2017

Shares 188,618 Value ($000) $4,508 Avg Close $19.78 Range $16.51 - $24.00

Q2 2017

Shares 188,618 Value ($000) $3,208 Avg Close $16.82 Range $14.54 - $20.11

Q1 2017

Shares 188,618 Value ($000) $3,388 Avg Close $18.80 Range $15.61 - $23.69

Q4 2016

Shares 188,618 Value ($000) $3,005 Avg Close $16.62 Range $13.15 - $19.20

Q3 2016

Shares 188,618 Value ($000) $3,408 Avg Close $16.54 Range $12.22 - $18.59

Q2 2016

Shares 188,618 Value ($000) $2,405 Avg Close $14.18 Range $10.81 - $17.83

Q1 2016

Shares 188,618 Value ($000) $3,074 Avg Close $12.00 Range $6.97 - $18.17

Q4 2015

Shares 188,618 Value ($000) $2,122 Avg Close $13.45 Range $9.91 - $18.65

Q3 2015

Shares 188,618 Value ($000) $2,675 Avg Close $20.12 Range $13.34 - $30.02

Q2 2015

Shares 198,884 Value ($000) $6,006 Avg Close $31.90 Range $27.97 - $36.35

Q1 2015

Shares 202,329 Value ($000) $6,072 Avg Close $29.80 Range $25.96 - $33.60

Q4 2014

Shares 202,336 Value ($000) $7,035 Avg Close $31.49 Range $28.73 - $35.21

Q3 2014

Shares 202,338 Value ($000) $7,507 Avg Close $39.92 Range $34.97 - $43.90

Q2 2014

Shares 203,824 Value ($000) $9,192 Avg Close $38.68 Range $35.44 - $42.89

Q1 2014

Shares 208,129 Value ($000) $7,842 Avg Close $31.60 Range $27.91 - $36.14

Q4 2013

Shares 214,096 Value ($000) $7,628 Avg Close $30.74 Range $27.52 - $33.68

Q3 2013

Shares 220,193 Value ($000) $6,720 Avg Close $26.04 Range $23.74 - $30.56

Q2 2013

Shares 220,240 Value ($000) $5,795 Avg Close $26.04 Range $23.70 - $29.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	147,969	$17	$97.45	$79.29 - $117.48
Q3 2025	150,001	$12	$81.04	$70.42 - $96.20
Q2 2025	143,428	$12	$68.45	$39.23 - $87.75
Q1 2025	144,155	$8	$56.77	$49.07 - $66.80
Q4 2024	157,828	$9	$58.97	$52.45 - $67.09
Q3 2024	157,480	$11	$62.09	$53.90 - $68.92
Q2 2024	153,720	$9	$56.03	$47.90 - $62.44
Q1 2024	168,311	$9	$45.22	$38.04 - $51.95
Q4 2023	175,709	$8	$41.52	$35.03 - $46.57
Q3 2023	173,111	$7	$44.44	$41.04 - $47.92
Q2 2023	178,941	$8	$38.25	$34.10 - $44.39
Q1 2023	180,541	$7	$37.76	$29.37 - $43.32
Q4 2022	181,741	$5	$29.27	$25.39 - $31.74
Q3 2022	181,741	$4,836	$27.84	$20.52 - $33.31
Q2 2022	181,741	$4,127	$26.35	$20.87 - $30.74
Q1 2022	182,541	$4,899	$23.18	$16.02 - $28.45
Q4 2021	182,541	$2,908	$16.05	$13.85 - $18.33
Q3 2021	183,041	$3,044	$18.91	$15.75 - $22.33
Q2 2021	183,041	$3,816	$22.93	$20.15 - $25.04
Q1 2021	200,241	$4,217	$19.55	$15.97 - $22.87
Q4 2020	216,641	$3,633	$12.70	$8.24 - $17.60
Q3 2020	231,541	$2,019	$9.20	$8.04 - $11.06
Q2 2020	190,141	$1,938	$8.67	$6.21 - $12.60
Q1 2020	185,841	$1,580	$15.97	$4.95 - $20.91
Q4 2019	189,041	$3,906	$21.68	$18.98 - $24.17
Q3 2019	189,041	$3,828	$21.15	$17.03 - $25.66
Q2 2019	189,041	$4,764	$24.37	$21.15 - $27.49
Q1 2019	189,041	$4,834	$26.33	$21.00 - $29.50
Q4 2018	185,841	$4,046	$25.93	$20.84 - $29.84
Q3 2018	185,941	$5,495	$26.89	$24.31 - $30.18
Q2 2018	187,341	$4,706	$27.05	$22.93 - $29.87
Q1 2018	188,618	$4,466	$26.83	$22.70 - $30.25
Q4 2017	188,618	$4,553	$23.80	$21.01 - $26.59
Q3 2017	188,618	$4,508	$19.78	$16.51 - $24.00
Q2 2017	188,618	$3,208	$16.82	$14.54 - $20.11
Q1 2017	188,618	$3,388	$18.80	$15.61 - $23.69
Q4 2016	188,618	$3,005	$16.62	$13.15 - $19.20
Q3 2016	188,618	$3,408	$16.54	$12.22 - $18.59
Q2 2016	188,618	$2,405	$14.18	$10.81 - $17.83
Q1 2016	188,618	$3,074	$12.00	$6.97 - $18.17
Q4 2015	188,618	$2,122	$13.45	$9.91 - $18.65
Q3 2015	188,618	$2,675	$20.12	$13.34 - $30.02
Q2 2015	198,884	$6,006	$31.90	$27.97 - $36.35
Q1 2015	202,329	$6,072	$29.80	$25.96 - $33.60
Q4 2014	202,336	$7,035	$31.49	$28.73 - $35.21
Q3 2014	202,338	$7,507	$39.92	$34.97 - $43.90
Q2 2014	203,824	$9,192	$38.68	$35.44 - $42.89
Q1 2014	208,129	$7,842	$31.60	$27.91 - $36.14
Q4 2013	214,096	$7,628	$30.74	$27.52 - $33.68
Q3 2013	220,193	$6,720	$26.04	$23.74 - $30.56
Q2 2013	220,240	$5,795	$26.04	$23.70 - $29.42