CELANESE CORP DEL

Ticker: CE CUSIP: 150870103 Class: COM

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS's Holding History (CIK: 0001083190)

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

Q4 2025

Shares 27,110 Value ($000) $1,146 Avg Close $40.78 Range $35.13 - $45.80

Q3 2025

Shares 27,888 Value ($000) $1,174 Avg Close $49.73 Range $36.95 - $63.47

Q2 2025

Shares 28,089 Value ($000) $1,554 Avg Close $49.77 Range $36.22 - $60.29

Q1 2025

Shares 26,159 Value ($000) $1,485 Avg Close $62.32 Range $45.85 - $75.65

Q4 2024

Shares 23,243 Value ($000) $1,609 Avg Close $95.63 Range $66.57 - $136.29

Q3 2024

Shares 23,786 Value ($000) $3,234 Avg Close $130.20 Range $115.95 - $145.94

Q2 2024

Shares 22,071 Value ($000) $2,977 Avg Close $150.66 Range $131.98 - $169.10

Q1 2024

Shares 21,985 Value ($000) $3,778 Avg Close $149.27 Range $135.24 - $169.16

Q4 2023

Shares 21,931 Value ($000) $3,407 Avg Close $127.36 Range $108.33 - $155.57

Q3 2023

Shares 20,124 Value ($000) $2,526 Avg Close $119.33 Range $105.74 - $127.40

Q2 2023

Shares 17,455 Value ($000) $2,021 Avg Close $104.56 Range $95.62 - $114.83

Q1 2023

Shares 16,911 Value ($000) $1,841 Avg Close $110.53 Range $93.26 - $122.53

Q4 2022

Shares 16,862 Value ($000) $2 Avg Close $94.49 Range $82.41 - $107.19

Q3 2022

Shares 14,580 Value ($000) $1,317 Avg Close $103.96 Range $82.17 - $117.12

Q2 2022

Shares 15,770 Value ($000) $1,855 Avg Close $135.03 Range $108.65 - $152.03

Q1 2022

Shares 14,455 Value ($000) $2,065 Avg Close $142.81 Range $123.99 - $164.73

Q4 2021

Shares 13,665 Value ($000) $2,297 Avg Close $151.80 Range $138.63 - $162.45

Q3 2021

Shares 13,925 Value ($000) $2,098 Avg Close $143.01 Range $132.16 - $152.26

Q2 2021

Shares 14,112 Value ($000) $2,139 Avg Close $146.80 Range $133.78 - $158.22

Q1 2021

Shares 14,279 Value ($000) $2,139 Avg Close $126.28 Range $105.75 - $143.35

Q4 2020

Shares 14,606 Value ($000) $1,898 Avg Close $113.78 Range $94.16 - $126.73

Q3 2020

Shares 10,960 Value ($000) $1,178 Avg Close $90.84 Range $75.24 - $104.85

Q2 2020

Shares 6,760 Value ($000) $584 Avg Close $75.33 Range $59.77 - $92.46

Q1 2020

Shares 7,722 Value ($000) $567 Avg Close $88.59 Range $47.34 - $111.29

Q4 2019

Shares 7,784 Value ($000) $958 Avg Close $109.79 Range $102.35 - $115.13

Q3 2019

Shares 7,929 Value ($000) $970 Avg Close $99.99 Range $90.70 - $113.01

Q2 2019

Shares 7,433 Value ($000) $801 Avg Close $91.40 Range $83.73 - $100.05

Q1 2019

Shares 7,489 Value ($000) $738 Avg Close $86.22 Range $76.25 - $92.11

Q4 2018

Shares 7,297 Value ($000) $657 Avg Close $85.53 Range $72.47 - $100.55

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	27,110	$1,146	$40.78	$35.13 - $45.80
Q3 2025	27,888	$1,174	$49.73	$36.95 - $63.47
Q2 2025	28,089	$1,554	$49.77	$36.22 - $60.29
Q1 2025	26,159	$1,485	$62.32	$45.85 - $75.65
Q4 2024	23,243	$1,609	$95.63	$66.57 - $136.29
Q3 2024	23,786	$3,234	$130.20	$115.95 - $145.94
Q2 2024	22,071	$2,977	$150.66	$131.98 - $169.10
Q1 2024	21,985	$3,778	$149.27	$135.24 - $169.16
Q4 2023	21,931	$3,407	$127.36	$108.33 - $155.57
Q3 2023	20,124	$2,526	$119.33	$105.74 - $127.40
Q2 2023	17,455	$2,021	$104.56	$95.62 - $114.83
Q1 2023	16,911	$1,841	$110.53	$93.26 - $122.53
Q4 2022	16,862	$2	$94.49	$82.41 - $107.19
Q3 2022	14,580	$1,317	$103.96	$82.17 - $117.12
Q2 2022	15,770	$1,855	$135.03	$108.65 - $152.03
Q1 2022	14,455	$2,065	$142.81	$123.99 - $164.73
Q4 2021	13,665	$2,297	$151.80	$138.63 - $162.45
Q3 2021	13,925	$2,098	$143.01	$132.16 - $152.26
Q2 2021	14,112	$2,139	$146.80	$133.78 - $158.22
Q1 2021	14,279	$2,139	$126.28	$105.75 - $143.35
Q4 2020	14,606	$1,898	$113.78	$94.16 - $126.73
Q3 2020	10,960	$1,178	$90.84	$75.24 - $104.85
Q2 2020	6,760	$584	$75.33	$59.77 - $92.46
Q1 2020	7,722	$567	$88.59	$47.34 - $111.29
Q4 2019	7,784	$958	$109.79	$102.35 - $115.13
Q3 2019	7,929	$970	$99.99	$90.70 - $113.01
Q2 2019	7,433	$801	$91.40	$83.73 - $100.05
Q1 2019	7,489	$738	$86.22	$76.25 - $92.11
Q4 2018	7,297	$657	$85.53	$72.47 - $100.55