EXPONENT INC

Ticker: EXPO CUSIP: 30214U102 Class: Common Stock

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

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

Q4 2025

Shares 47,777 Value ($000) $3,319 Avg Close $70.04 Range $64.13 - $76.49

Q3 2025

Shares 46,889 Value ($000) $3,258 Avg Close $70.97 Range $63.29 - $77.29

Q2 2025

Shares 46,887 Value ($000) $3,503 Avg Close $76.63 Range $71.84 - $82.91

Q1 2025

Shares 46,887 Value ($000) $3,801 Avg Close $85.84 Range $77.36 - $96.05

Q4 2024

Shares 47,419 Value ($000) $4,225 Avg Close $98.95 Range $86.42 - $113.62

Q3 2024

Shares 47,922 Value ($000) $5,524 Avg Close $102.48 Range $91.12 - $113.49

Q2 2024

Shares 49,340 Value ($000) $4,693 Avg Close $88.07 Range $75.45 - $100.26

Q1 2024

Shares 50,623 Value ($000) $4,186 Avg Close $80.52 Range $66.82 - $89.81

Q4 2023

Shares 53,714 Value ($000) $4,729 Avg Close $79.51 Range $62.65 - $88.86

Q3 2023

Shares 56,137 Value ($000) $4,805 Avg Close $87.51 Range $81.83 - $93.97

Q2 2023

Shares 61,421 Value ($000) $5,732 Avg Close $90.75 Range $82.22 - $98.29

Q1 2023

Shares 63,407 Value ($000) $6,321 Avg Close $97.94 Range $87.83 - $108.44

Q4 2022

Shares 64,777 Value ($000) $6,419 Avg Close $93.27 Range $83.33 - $102.60

Q3 2022

Shares 64,674 Value ($000) $5,670 Avg Close $90.80 Range $83.36 - $99.84

Q2 2022

Shares 66,512 Value ($000) $6,084 Avg Close $89.98 Range $77.49 - $106.96

Q1 2022

Shares 66,584 Value ($000) $7,194 Avg Close $91.89 Range $79.49 - $113.24

Q4 2021

Shares 72,263 Value ($000) $8,435 Avg Close $111.77 Range $104.67 - $121.29

Q3 2021

Shares 70,701 Value ($000) $8,000 Avg Close $102.37 Range $83.04 - $114.43

Q2 2021

Shares 71,588 Value ($000) $6,386 Avg Close $88.68 Range $81.59 - $96.96

Q1 2021

Shares 77,567 Value ($000) $7,559 Avg Close $88.68 Range $77.59 - $95.36

Q4 2020

Shares 77,714 Value ($000) $6,997 Avg Close $75.22 Range $64.49 - $85.98

Q3 2020

Shares 77,653 Value ($000) $5,593 Avg Close $74.81 Range $66.26 - $79.56

Q2 2020

Shares 77,440 Value ($000) $6,267 Avg Close $67.56 Range $57.66 - $76.48

Q1 2020

Shares 78,651 Value ($000) $5,656 Avg Close $67.97 Range $54.43 - $77.49

Q4 2019

Shares 79,403 Value ($000) $5,480 Avg Close $61.68 Range $57.11 - $66.68

Q3 2019

Shares 80,638 Value ($000) $5,637 Avg Close $62.89 Range $53.83 - $67.85

Q2 2019

Shares 79,675 Value ($000) $4,664 Avg Close $52.92 Range $50.50 - $55.87

Q1 2019

Shares 79,026 Value ($000) $4,561 Avg Close $50.06 Range $43.61 - $54.25

Q4 2018

Shares 80,783 Value ($000) $4,097 Avg Close $46.35 Range $41.04 - $50.11

Q3 2018

Shares 79,139 Value ($000) $4,242 Avg Close $47.22 Range $43.99 - $50.40

Q2 2018

Shares 78,989 Value ($000) $3,815 Avg Close $42.16 Range $35.08 - $48.38

Q1 2018

Shares 39,069 Value ($000) $3,073 Avg Close $34.66 Range $31.96 - $37.28

Q4 2017

Shares 40,439 Value ($000) $2,875 Avg Close $33.56 Range $31.78 - $35.23

Q3 2017

Shares 41,054 Value ($000) $3,034 Avg Close $30.10 Range $25.97 - $34.44

Q2 2017

Shares 45,468 Value ($000) $2,651 Avg Close $27.13 Range $25.92 - $28.94

Q1 2017

Shares 50,342 Value ($000) $2,998 Avg Close $26.37 Range $25.20 - $27.58

Q4 2016

Shares 52,742 Value ($000) $3,180 Avg Close $26.16 Range $21.82 - $29.29

Q3 2016

Shares 54,142 Value ($000) $2,764 Avg Close $23.44 Range $20.21 - $26.81

Q2 2016

Shares 53,642 Value ($000) $3,133 Avg Close $23.30 Range $21.66 - $26.24

Q1 2016

Shares 55,082 Value ($000) $2,810 Avg Close $21.56 Range $19.99 - $23.21

Q4 2015

Shares 48,123 Value ($000) $2,404 Avg Close $22.59 Range $19.61 - $24.33

Q3 2015

Shares 47,353 Value ($000) $2,110 Avg Close $19.51 Range $17.98 - $20.71

Q2 2015

Shares 47,453 Value ($000) $2,125 Avg Close $19.41 Range $18.38 - $21.41

Q1 2015

Shares 23,911 Value ($000) $2,126 Avg Close $18.85 Range $17.24 - $20.22

Q4 2014

Shares 24,311 Value ($000) $2,006 Avg Close $17.03 Range $15.31 - $18.48

Q3 2014

Shares 24,208 Value ($000) $1,716 Avg Close $16.08 Range $15.27 - $16.97

Q2 2014

Shares 23,971 Value ($000) $1,776 Avg Close $15.58 Range $14.11 - $16.64

Q1 2014

Shares 23,971 Value ($000) $1,799 Avg Close $16.03 Range $14.26 - $16.90

Q4 2013

Shares 23,871 Value ($000) $1,849 Avg Close $16.37 Range $14.69 - $17.44

Q3 2013

Shares 23,671 Value ($000) $1,701 Avg Close $14.42 Range $12.78 - $15.73

Q2 2013

Shares 22,976 Value ($000) $1,358 Avg Close $11.84 Range $10.87 - $12.92

Q1 2013

Shares 23,300 Value ($000) $1,257 Avg Close $11.33 Range $10.14 - $12.30

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	47,777	$3,319	$70.04	$64.13 - $76.49
Q3 2025	46,889	$3,258	$70.97	$63.29 - $77.29
Q2 2025	46,887	$3,503	$76.63	$71.84 - $82.91
Q1 2025	46,887	$3,801	$85.84	$77.36 - $96.05
Q4 2024	47,419	$4,225	$98.95	$86.42 - $113.62
Q3 2024	47,922	$5,524	$102.48	$91.12 - $113.49
Q2 2024	49,340	$4,693	$88.07	$75.45 - $100.26
Q1 2024	50,623	$4,186	$80.52	$66.82 - $89.81
Q4 2023	53,714	$4,729	$79.51	$62.65 - $88.86
Q3 2023	56,137	$4,805	$87.51	$81.83 - $93.97
Q2 2023	61,421	$5,732	$90.75	$82.22 - $98.29
Q1 2023	63,407	$6,321	$97.94	$87.83 - $108.44
Q4 2022	64,777	$6,419	$93.27	$83.33 - $102.60
Q3 2022	64,674	$5,670	$90.80	$83.36 - $99.84
Q2 2022	66,512	$6,084	$89.98	$77.49 - $106.96
Q1 2022	66,584	$7,194	$91.89	$79.49 - $113.24
Q4 2021	72,263	$8,435	$111.77	$104.67 - $121.29
Q3 2021	70,701	$8,000	$102.37	$83.04 - $114.43
Q2 2021	71,588	$6,386	$88.68	$81.59 - $96.96
Q1 2021	77,567	$7,559	$88.68	$77.59 - $95.36
Q4 2020	77,714	$6,997	$75.22	$64.49 - $85.98
Q3 2020	77,653	$5,593	$74.81	$66.26 - $79.56
Q2 2020	77,440	$6,267	$67.56	$57.66 - $76.48
Q1 2020	78,651	$5,656	$67.97	$54.43 - $77.49
Q4 2019	79,403	$5,480	$61.68	$57.11 - $66.68
Q3 2019	80,638	$5,637	$62.89	$53.83 - $67.85
Q2 2019	79,675	$4,664	$52.92	$50.50 - $55.87
Q1 2019	79,026	$4,561	$50.06	$43.61 - $54.25
Q4 2018	80,783	$4,097	$46.35	$41.04 - $50.11
Q3 2018	79,139	$4,242	$47.22	$43.99 - $50.40
Q2 2018	78,989	$3,815	$42.16	$35.08 - $48.38
Q1 2018	39,069	$3,073	$34.66	$31.96 - $37.28
Q4 2017	40,439	$2,875	$33.56	$31.78 - $35.23
Q3 2017	41,054	$3,034	$30.10	$25.97 - $34.44
Q2 2017	45,468	$2,651	$27.13	$25.92 - $28.94
Q1 2017	50,342	$2,998	$26.37	$25.20 - $27.58
Q4 2016	52,742	$3,180	$26.16	$21.82 - $29.29
Q3 2016	54,142	$2,764	$23.44	$20.21 - $26.81
Q2 2016	53,642	$3,133	$23.30	$21.66 - $26.24
Q1 2016	55,082	$2,810	$21.56	$19.99 - $23.21
Q4 2015	48,123	$2,404	$22.59	$19.61 - $24.33
Q3 2015	47,353	$2,110	$19.51	$17.98 - $20.71
Q2 2015	47,453	$2,125	$19.41	$18.38 - $21.41
Q1 2015	23,911	$2,126	$18.85	$17.24 - $20.22
Q4 2014	24,311	$2,006	$17.03	$15.31 - $18.48
Q3 2014	24,208	$1,716	$16.08	$15.27 - $16.97
Q2 2014	23,971	$1,776	$15.58	$14.11 - $16.64
Q1 2014	23,971	$1,799	$16.03	$14.26 - $16.90
Q4 2013	23,871	$1,849	$16.37	$14.69 - $17.44
Q3 2013	23,671	$1,701	$14.42	$12.78 - $15.73
Q2 2013	22,976	$1,358	$11.84	$10.87 - $12.92
Q1 2013	23,300	$1,257	$11.33	$10.14 - $12.30