PATTERSON UTI ENERGY INC

Ticker: PTEN CUSIP: 703481101 Class: Common Stock

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2025

Shares 353,199 Value ($000) $2,158 Avg Close $5.97 Range $5.15 - $6.97

Q3 2025

Shares 344,697 Value ($000) $1,786 Avg Close $5.75 Range $5.10 - $6.69

Q2 2025

Shares 344,681 Value ($000) $2,044 Avg Close $6.02 Range $5.12 - $8.60

Q1 2025

Shares 344,681 Value ($000) $2,833 Avg Close $8.39 Range $7.03 - $9.57

Q4 2024

Shares 350,572 Value ($000) $2,896 Avg Close $8.02 Range $7.15 - $8.91

Q3 2024

Shares 361,542 Value ($000) $2,766 Avg Close $9.21 Range $7.45 - $11.27

Q2 2024

Shares 360,721 Value ($000) $3,737 Avg Close $10.97 Range $9.68 - $12.65

Q1 2024

Shares 373,277 Value ($000) $4,457 Avg Close $11.11 Range $9.73 - $12.33

Q4 2023

Shares 375,346 Value ($000) $4,054 Avg Close $12.16 Range $10.45 - $14.26

Q3 2023

Shares 389,840 Value ($000) $5,395 Avg Close $14.63 Range $11.65 - $16.18

Q2 2023

Shares 252,253 Value ($000) $3,019 Avg Close $11.29 Range $9.70 - $12.91

Q1 2023

Shares 270,302 Value ($000) $3,163 Avg Close $14.60 Range $10.40 - $17.86

Q4 2022

Shares 274,303 Value ($000) $4,619 Avg Close $16.50 Range $12.37 - $19.81

Q3 2022

Shares 270,847 Value ($000) $3,163 Avg Close $14.29 Range $10.69 - $17.17

Q2 2022

Shares 275,595 Value ($000) $4,343 Avg Close $16.79 Range $13.81 - $20.53

Q1 2022

Shares 262,728 Value ($000) $4,067 Avg Close $12.62 Range $8.44 - $17.09

Q4 2021

Shares 265,699 Value ($000) $2,245 Avg Close $8.62 Range $6.71 - $10.13

Q3 2021

Shares 260,263 Value ($000) $2,342 Avg Close $8.10 Range $6.44 - $10.58

Q2 2021

Shares 262,181 Value ($000) $2,606 Avg Close $8.46 Range $6.07 - $11.27

Q1 2021

Shares 281,949 Value ($000) $2,010 Avg Close $7.05 Range $5.21 - $9.74

Q4 2020

Shares 281,872 Value ($000) $1,483 Avg Close $3.93 Range $2.38 - $5.83

Q3 2020

Shares 307,905 Value ($000) $878 Avg Close $3.68 Range $2.77 - $4.74

Q2 2020

Shares 302,369 Value ($000) $1,049 Avg Close $3.45 Range $1.61 - $6.33

Q1 2020

Shares 335,612 Value ($000) $789 Avg Close $6.47 Range $1.80 - $10.95

Q4 2019

Shares 311,786 Value ($000) $3,274 Avg Close $9.05 Range $7.67 - $10.80

Q3 2019

Shares 331,757 Value ($000) $2,837 Avg Close $9.81 Range $7.87 - $12.15

Q2 2019

Shares 338,210 Value ($000) $3,893 Avg Close $12.87 Range $10.07 - $16.27

Q1 2019

Shares 349,812 Value ($000) $4,904 Avg Close $13.11 Range $9.85 - $14.79

Q4 2018

Shares 360,652 Value ($000) $3,733 Avg Close $14.74 Range $9.49 - $18.24

Q3 2018

Shares 366,156 Value ($000) $6,265 Avg Close $17.18 Range $14.60 - $19.29

Q2 2018

Shares 366,087 Value ($000) $6,590 Avg Close $20.05 Range $16.61 - $23.99

Q1 2018

Shares 348,936 Value ($000) $6,110 Avg Close $20.88 Range $16.82 - $25.03

Q4 2017

Shares 359,071 Value ($000) $8,262 Avg Close $20.72 Range $17.24 - $23.26

Q3 2017

Shares 356,094 Value ($000) $7,457 Avg Close $18.42 Range $14.83 - $21.74

Q2 2017

Shares 383,913 Value ($000) $7,751 Avg Close $21.79 Range $19.06 - $25.75

Q1 2017

Shares 333,875 Value ($000) $8,103 Avg Close $26.97 Range $22.83 - $29.76

Q4 2016

Shares 308,775 Value ($000) $8,312 Avg Close $24.70 Range $20.79 - $29.56

Q3 2016

Shares 316,975 Value ($000) $7,091 Avg Close $20.07 Range $17.61 - $22.66

Q2 2016

Shares 314,075 Value ($000) $6,696 Avg Close $18.84 Range $16.06 - $22.12

Q1 2016

Shares 320,646 Value ($000) $5,650 Avg Close $14.91 Range $10.94 - $18.75

Q4 2015

Shares 280,755 Value ($000) $4,234 Avg Close $15.38 Range $12.82 - $17.45

Q3 2015

Shares 276,291 Value ($000) $3,630 Avg Close $15.85 Range $12.97 - $18.80

Q2 2015

Shares 268,135 Value ($000) $5,045 Avg Close $20.74 Range $18.30 - $23.11

Q1 2015

Shares 268,736 Value ($000) $5,046 Avg Close $17.15 Range $13.30 - $19.70

Q4 2014

Shares 272,695 Value ($000) $4,524 Avg Close $21.10 Range $14.01 - $33.28

Q3 2014

Shares 270,836 Value ($000) $8,810 Avg Close $33.96 Range $31.12 - $38.43

Q2 2014

Shares 263,825 Value ($000) $9,218 Avg Close $32.83 Range $30.24 - $35.42

Q1 2014

Shares 267,225 Value ($000) $8,466 Avg Close $27.81 Range $24.37 - $31.95

Q4 2013

Shares 265,925 Value ($000) $6,733 Avg Close $23.93 Range $21.29 - $26.09

Q3 2013

Shares 264,025 Value ($000) $5,645 Avg Close $20.54 Range $18.83 - $22.41

Q2 2013

Shares 255,967 Value ($000) $4,954 Avg Close $21.83 Range $18.96 - $25.12

Q1 2013

Shares 253,667 Value ($000) $6,047 Avg Close $22.12 Range $18.59 - $25.48

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	353,199	$2,158	$5.97	$5.15 - $6.97
Q3 2025	344,697	$1,786	$5.75	$5.10 - $6.69
Q2 2025	344,681	$2,044	$6.02	$5.12 - $8.60
Q1 2025	344,681	$2,833	$8.39	$7.03 - $9.57
Q4 2024	350,572	$2,896	$8.02	$7.15 - $8.91
Q3 2024	361,542	$2,766	$9.21	$7.45 - $11.27
Q2 2024	360,721	$3,737	$10.97	$9.68 - $12.65
Q1 2024	373,277	$4,457	$11.11	$9.73 - $12.33
Q4 2023	375,346	$4,054	$12.16	$10.45 - $14.26
Q3 2023	389,840	$5,395	$14.63	$11.65 - $16.18
Q2 2023	252,253	$3,019	$11.29	$9.70 - $12.91
Q1 2023	270,302	$3,163	$14.60	$10.40 - $17.86
Q4 2022	274,303	$4,619	$16.50	$12.37 - $19.81
Q3 2022	270,847	$3,163	$14.29	$10.69 - $17.17
Q2 2022	275,595	$4,343	$16.79	$13.81 - $20.53
Q1 2022	262,728	$4,067	$12.62	$8.44 - $17.09
Q4 2021	265,699	$2,245	$8.62	$6.71 - $10.13
Q3 2021	260,263	$2,342	$8.10	$6.44 - $10.58
Q2 2021	262,181	$2,606	$8.46	$6.07 - $11.27
Q1 2021	281,949	$2,010	$7.05	$5.21 - $9.74
Q4 2020	281,872	$1,483	$3.93	$2.38 - $5.83
Q3 2020	307,905	$878	$3.68	$2.77 - $4.74
Q2 2020	302,369	$1,049	$3.45	$1.61 - $6.33
Q1 2020	335,612	$789	$6.47	$1.80 - $10.95
Q4 2019	311,786	$3,274	$9.05	$7.67 - $10.80
Q3 2019	331,757	$2,837	$9.81	$7.87 - $12.15
Q2 2019	338,210	$3,893	$12.87	$10.07 - $16.27
Q1 2019	349,812	$4,904	$13.11	$9.85 - $14.79
Q4 2018	360,652	$3,733	$14.74	$9.49 - $18.24
Q3 2018	366,156	$6,265	$17.18	$14.60 - $19.29
Q2 2018	366,087	$6,590	$20.05	$16.61 - $23.99
Q1 2018	348,936	$6,110	$20.88	$16.82 - $25.03
Q4 2017	359,071	$8,262	$20.72	$17.24 - $23.26
Q3 2017	356,094	$7,457	$18.42	$14.83 - $21.74
Q2 2017	383,913	$7,751	$21.79	$19.06 - $25.75
Q1 2017	333,875	$8,103	$26.97	$22.83 - $29.76
Q4 2016	308,775	$8,312	$24.70	$20.79 - $29.56
Q3 2016	316,975	$7,091	$20.07	$17.61 - $22.66
Q2 2016	314,075	$6,696	$18.84	$16.06 - $22.12
Q1 2016	320,646	$5,650	$14.91	$10.94 - $18.75
Q4 2015	280,755	$4,234	$15.38	$12.82 - $17.45
Q3 2015	276,291	$3,630	$15.85	$12.97 - $18.80
Q2 2015	268,135	$5,045	$20.74	$18.30 - $23.11
Q1 2015	268,736	$5,046	$17.15	$13.30 - $19.70
Q4 2014	272,695	$4,524	$21.10	$14.01 - $33.28
Q3 2014	270,836	$8,810	$33.96	$31.12 - $38.43
Q2 2014	263,825	$9,218	$32.83	$30.24 - $35.42
Q1 2014	267,225	$8,466	$27.81	$24.37 - $31.95
Q4 2013	265,925	$6,733	$23.93	$21.29 - $26.09
Q3 2013	264,025	$5,645	$20.54	$18.83 - $22.41
Q2 2013	255,967	$4,954	$21.83	$18.96 - $25.12
Q1 2013	253,667	$6,047	$22.12	$18.59 - $25.48