KOPPERS HOLDINGS INC

Ticker: KOP CUSIP: 50060P106 Class: Common Stock

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

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

Q4 2025

Shares 30,099 Value ($000) $1 Avg Close $27.92 Range $24.93 - $30.27

Q3 2025

Shares 30,205 Value ($000) $1 Avg Close $30.64 Range $26.64 - $35.42

Q2 2025

Shares 35,981 Value ($000) $1 Avg Close $28.51 Range $22.81 - $33.40

Q1 2025

Shares 36,411 Value ($000) $1 Avg Close $29.79 Range $26.71 - $32.62

Q4 2024

Shares 39,954 Value ($000) $1 Avg Close $35.29 Range $30.31 - $39.33

Q3 2024

Shares 40,654 Value ($000) $1 Avg Close $36.81 Range $33.32 - $41.05

Q2 2024

Shares 40,754 Value ($000) $2 Avg Close $45.92 Range $36.33 - $56.06

Q1 2024

Shares 38,717 Value ($000) $2 Avg Close $50.84 Range $45.30 - $57.24

Q4 2023

Shares 38,717 Value ($000) $2 Avg Close $41.07 Range $34.25 - $51.33

Q3 2023

Shares 38,537 Value ($000) $2 Avg Close $37.10 Range $32.03 - $41.14

Q2 2023

Shares 39,037 Value ($000) $1 Avg Close $31.88 Range $27.88 - $34.73

Q1 2023

Shares 39,237 Value ($000) $1 Avg Close $32.48 Range $27.62 - $37.52

Q4 2022

Shares 39,561 Value ($000) $1 Avg Close $26.33 Range $20.34 - $31.62

Q3 2022

Shares 39,861 Value ($000) $828 Avg Close $22.41 Range $19.60 - $25.85

Q2 2022

Shares 40,461 Value ($000) $916 Avg Close $24.62 Range $21.17 - $27.82

Q1 2022

Shares 40,555 Value ($000) $1,116 Avg Close $28.63 Range $26.03 - $32.64

Q4 2021

Shares 40,555 Value ($000) $1,269 Avg Close $31.64 Range $27.29 - $36.29

Q3 2021

Shares 40,555 Value ($000) $1,268 Avg Close $30.18 Range $27.05 - $33.29

Q2 2021

Shares 42,911 Value ($000) $1,388 Avg Close $32.69 Range $29.53 - $38.23

Q1 2021

Shares 42,911 Value ($000) $1,492 Avg Close $33.96 Range $28.60 - $37.95

Q4 2020

Shares 44,411 Value ($000) $1,384 Avg Close $25.23 Range $19.75 - $30.43

Q3 2020

Shares 44,411 Value ($000) $929 Avg Close $22.04 Range $16.86 - $26.37

Q2 2020

Shares 43,811 Value ($000) $825 Avg Close $14.72 Range $8.00 - $22.09

Q1 2020

Shares 43,826 Value ($000) $542 Avg Close $24.89 Range $8.37 - $37.67

Q4 2019

Shares 43,926 Value ($000) $1,679 Avg Close $34.04 Range $25.45 - $43.37

Q3 2019

Shares 38,626 Value ($000) $1,128 Avg Close $26.87 Range $22.89 - $29.57

Q2 2019

Shares 38,526 Value ($000) $1,131 Avg Close $27.00 Range $25.07 - $29.17

Q1 2019

Shares 38,526 Value ($000) $1,001 Avg Close $22.79 Range $16.00 - $26.87

Q4 2018

Shares 41,454 Value ($000) $706 Avg Close $22.79 Range $14.54 - $31.53

Q3 2018

Shares 41,526 Value ($000) $1,294 Avg Close $34.72 Range $29.56 - $38.82

Q2 2018

Shares 43,526 Value ($000) $1,669 Avg Close $40.28 Range $36.59 - $44.88

Q1 2018

Shares 43,526 Value ($000) $1,789 Avg Close $42.63 Range $37.56 - $49.72

Q4 2017

Shares 43,526 Value ($000) $2,215 Avg Close $47.24 Range $44.34 - $50.21

Q3 2017

Shares 43,526 Value ($000) $2,009 Avg Close $37.68 Range $34.09 - $45.12

Q2 2017

Shares 43,526 Value ($000) $1,573 Avg Close $37.33 Range $32.86 - $43.42

Q1 2017

Shares 43,626 Value ($000) $1,848 Avg Close $40.70 Range $37.90 - $44.44

Q4 2016

Shares 38,526 Value ($000) $1,553 Avg Close $35.58 Range $30.32 - $41.39

Q3 2016

Shares 38,526 Value ($000) $1,240 Avg Close $30.57 Range $27.66 - $32.67

Q2 2016

Shares 39,026 Value ($000) $1,199 Avg Close $25.09 Range $20.72 - $30.39

Q1 2016

Shares 39,026 Value ($000) $877 Avg Close $17.27 Range $13.16 - $22.71

Q4 2015

Shares 38,526 Value ($000) $703 Avg Close $19.67 Range $16.81 - $22.90

Q3 2015

Shares 38,526 Value ($000) $777 Avg Close $20.57 Range $17.33 - $24.10

Q2 2015

Shares 38,526 Value ($000) $952 Avg Close $23.45 Range $18.67 - $26.56

Q1 2015

Shares 38,526 Value ($000) $758 Avg Close $19.47 Range $15.29 - $25.63

Q4 2014

Shares 38,526 Value ($000) $1,001 Avg Close $29.74 Range $21.83 - $38.35

Q3 2014

Shares 38,526 Value ($000) $1,278 Avg Close $34.78 Range $31.75 - $37.67

Q2 2014

Shares 38,526 Value ($000) $1,474 Avg Close $37.27 Range $33.70 - $43.17

Q1 2014

Shares 40,226 Value ($000) $1,659 Avg Close $38.65 Range $33.68 - $43.26

Q4 2013

Shares 42,526 Value ($000) $1,946 Avg Close $42.61 Range $39.00 - $46.85

Q3 2013

Shares 43,326 Value ($000) $1,848 Avg Close $36.85 Range $32.31 - $40.30

Q2 2013

Shares 44,226 Value ($000) $1,689 Avg Close $38.63 Range $34.88 - $43.02

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	30,099	$1	$27.92	$24.93 - $30.27
Q3 2025	30,205	$1	$30.64	$26.64 - $35.42
Q2 2025	35,981	$1	$28.51	$22.81 - $33.40
Q1 2025	36,411	$1	$29.79	$26.71 - $32.62
Q4 2024	39,954	$1	$35.29	$30.31 - $39.33
Q3 2024	40,654	$1	$36.81	$33.32 - $41.05
Q2 2024	40,754	$2	$45.92	$36.33 - $56.06
Q1 2024	38,717	$2	$50.84	$45.30 - $57.24
Q4 2023	38,717	$2	$41.07	$34.25 - $51.33
Q3 2023	38,537	$2	$37.10	$32.03 - $41.14
Q2 2023	39,037	$1	$31.88	$27.88 - $34.73
Q1 2023	39,237	$1	$32.48	$27.62 - $37.52
Q4 2022	39,561	$1	$26.33	$20.34 - $31.62
Q3 2022	39,861	$828	$22.41	$19.60 - $25.85
Q2 2022	40,461	$916	$24.62	$21.17 - $27.82
Q1 2022	40,555	$1,116	$28.63	$26.03 - $32.64
Q4 2021	40,555	$1,269	$31.64	$27.29 - $36.29
Q3 2021	40,555	$1,268	$30.18	$27.05 - $33.29
Q2 2021	42,911	$1,388	$32.69	$29.53 - $38.23
Q1 2021	42,911	$1,492	$33.96	$28.60 - $37.95
Q4 2020	44,411	$1,384	$25.23	$19.75 - $30.43
Q3 2020	44,411	$929	$22.04	$16.86 - $26.37
Q2 2020	43,811	$825	$14.72	$8.00 - $22.09
Q1 2020	43,826	$542	$24.89	$8.37 - $37.67
Q4 2019	43,926	$1,679	$34.04	$25.45 - $43.37
Q3 2019	38,626	$1,128	$26.87	$22.89 - $29.57
Q2 2019	38,526	$1,131	$27.00	$25.07 - $29.17
Q1 2019	38,526	$1,001	$22.79	$16.00 - $26.87
Q4 2018	41,454	$706	$22.79	$14.54 - $31.53
Q3 2018	41,526	$1,294	$34.72	$29.56 - $38.82
Q2 2018	43,526	$1,669	$40.28	$36.59 - $44.88
Q1 2018	43,526	$1,789	$42.63	$37.56 - $49.72
Q4 2017	43,526	$2,215	$47.24	$44.34 - $50.21
Q3 2017	43,526	$2,009	$37.68	$34.09 - $45.12
Q2 2017	43,526	$1,573	$37.33	$32.86 - $43.42
Q1 2017	43,626	$1,848	$40.70	$37.90 - $44.44
Q4 2016	38,526	$1,553	$35.58	$30.32 - $41.39
Q3 2016	38,526	$1,240	$30.57	$27.66 - $32.67
Q2 2016	39,026	$1,199	$25.09	$20.72 - $30.39
Q1 2016	39,026	$877	$17.27	$13.16 - $22.71
Q4 2015	38,526	$703	$19.67	$16.81 - $22.90
Q3 2015	38,526	$777	$20.57	$17.33 - $24.10
Q2 2015	38,526	$952	$23.45	$18.67 - $26.56
Q1 2015	38,526	$758	$19.47	$15.29 - $25.63
Q4 2014	38,526	$1,001	$29.74	$21.83 - $38.35
Q3 2014	38,526	$1,278	$34.78	$31.75 - $37.67
Q2 2014	38,526	$1,474	$37.27	$33.70 - $43.17
Q1 2014	40,226	$1,659	$38.65	$33.68 - $43.26
Q4 2013	42,526	$1,946	$42.61	$39.00 - $46.85
Q3 2013	43,326	$1,848	$36.85	$32.31 - $40.30
Q2 2013	44,226	$1,689	$38.63	$34.88 - $43.02