MASTEC INC

Ticker: MTZ CUSIP: 576323109 Class: COM

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

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

Q4 2025

Shares 59,817 Value ($000) $13,002 Avg Close $209.86 Range $182.34 - $233.14

Q3 2025

Shares 59,596 Value ($000) $12,683 Avg Close $183.12 Range $160.08 - $213.66

Q2 2025

Shares 60,602 Value ($000) $10,328 Avg Close $144.03 Range $99.70 - $172.71

Q1 2025

Shares 60,602 Value ($000) $7,073 Avg Close $134.92 Range $106.45 - $166.95

Q4 2024

Shares 59,250 Value ($000) $8,066 Avg Close $134.07 Range $118.86 - $150.12

Q3 2024

Shares 60,711 Value ($000) $7,474 Avg Close $109.17 Range $89.96 - $127.97

Q2 2024

Shares 62,450 Value ($000) $6,682 Avg Close $101.02 Range $82.29 - $113.12

Q1 2024

Shares 63,607 Value ($000) $5,931 Avg Close $76.04 Range $60.96 - $94.82

Q4 2023

Shares 67,034 Value ($000) $5,076 Avg Close $62.54 Range $44.65 - $76.56

Q3 2023

Shares 70,058 Value ($000) $5,042 Avg Close $99.67 Range $71.61 - $123.33

Q2 2023

Shares 76,770 Value ($000) $9,057 Avg Close $97.94 Range $84.80 - $118.32

Q1 2023

Shares 78,260 Value ($000) $7,391 Avg Close $95.07 Range $84.89 - $103.50

Q4 2022

Shares 79,147 Value ($000) $6,754 Avg Close $82.03 Range $62.36 - $96.54

Q3 2022

Shares 73,042 Value ($000) $4,638 Avg Close $77.37 Range $62.64 - $86.57

Q2 2022

Shares 74,982 Value ($000) $5,373 Avg Close $77.96 Range $67.31 - $92.03

Q1 2022

Shares 75,852 Value ($000) $6,607 Avg Close $87.37 Range $71.85 - $99.00

Q4 2021

Shares 81,375 Value ($000) $7,509 Avg Close $91.39 Range $83.90 - $104.21

Q3 2021

Shares 97,535 Value ($000) $8,415 Avg Close $94.87 Range $85.11 - $107.25

Q2 2021

Shares 95,912 Value ($000) $10,176 Avg Close $108.58 Range $93.16 - $122.33

Q1 2021

Shares 85,949 Value ($000) $8,053 Avg Close $85.57 Range $67.05 - $99.38

Q4 2020

Shares 85,954 Value ($000) $5,860 Avg Close $56.09 Range $40.18 - $71.11

Q3 2020

Shares 85,831 Value ($000) $3,622 Avg Close $42.99 Range $36.81 - $49.86

Q2 2020

Shares 85,488 Value ($000) $3,836 Avg Close $37.90 Range $28.39 - $48.32

Q1 2020

Shares 91,239 Value ($000) $2,986 Avg Close $50.87 Range $22.51 - $65.00

Q4 2019

Shares 91,692 Value ($000) $5,883 Avg Close $65.85 Range $59.85 - $73.71

Q3 2019

Shares 93,544 Value ($000) $6,074 Avg Close $58.36 Range $49.23 - $66.61

Q2 2019

Shares 92,427 Value ($000) $4,763 Avg Close $49.40 Range $45.52 - $53.80

Q1 2019

Shares 97,117 Value ($000) $4,671 Avg Close $44.93 Range $39.30 - $48.77

Q4 2018

Shares 100,601 Value ($000) $4,080 Avg Close $43.06 Range $37.24 - $51.77

Q3 2018

Shares 99,244 Value ($000) $4,431 Avg Close $46.29 Range $40.20 - $53.45

Q2 2018

Shares 99,280 Value ($000) $5,038 Avg Close $48.31 Range $43.90 - $54.70

Q1 2018

Shares 101,446 Value ($000) $4,773 Avg Close $50.70 Range $44.70 - $55.53

Q4 2017

Shares 105,002 Value ($000) $5,140 Avg Close $44.61 Range $39.83 - $51.20

Q3 2017

Shares 106,687 Value ($000) $4,950 Avg Close $43.56 Range $38.40 - $49.50

Q2 2017

Shares 117,985 Value ($000) $5,327 Avg Close $43.26 Range $38.33 - $47.90

Q1 2017

Shares 130,478 Value ($000) $5,226 Avg Close $38.26 Range $34.33 - $41.90

Q4 2016

Shares 136,578 Value ($000) $5,224 Avg Close $33.93 Range $27.10 - $40.90

Q3 2016

Shares 140,178 Value ($000) $4,169 Avg Close $27.42 Range $22.03 - $31.15

Q2 2016

Shares 138,878 Value ($000) $3,100 Avg Close $22.18 Range $19.13 - $24.67

Q1 2016

Shares 141,843 Value ($000) $2,871 Avg Close $16.37 Range $12.44 - $20.85

Q4 2015

Shares 123,670 Value ($000) $2,149 Avg Close $17.77 Range $15.42 - $21.10

Q3 2015

Shares 121,732 Value ($000) $1,927 Avg Close $17.42 Range $14.48 - $20.91

Q2 2015

Shares 121,932 Value ($000) $2,423 Avg Close $18.69 Range $15.34 - $21.52

Q1 2015

Shares 119,779 Value ($000) $2,312 Avg Close $19.99 Range $16.00 - $22.79

Q4 2014

Shares 121,979 Value ($000) $2,758 Avg Close $24.73 Range $18.14 - $30.70

Q3 2014

Shares 120,763 Value ($000) $3,698 Avg Close $29.73 Range $26.38 - $32.10

Q2 2014

Shares 113,213 Value ($000) $3,489 Avg Close $37.68 Range $27.96 - $44.80

Q1 2014

Shares 108,113 Value ($000) $4,696 Avg Close $37.96 Range $32.27 - $44.03

Q4 2013

Shares 107,513 Value ($000) $3,518 Avg Close $31.66 Range $29.76 - $34.17

Q3 2013

Shares 106,813 Value ($000) $3,236 Avg Close $32.84 Range $28.88 - $35.31

Q2 2013

Shares 103,525 Value ($000) $3,406 Avg Close $30.13 Range $26.27 - $33.97

Q1 2013

Shares 95,204 Value ($000) $2,775 Avg Close $28.68 Range $25.11 - $31.47

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	59,817	$13,002	$209.86	$182.34 - $233.14
Q3 2025	59,596	$12,683	$183.12	$160.08 - $213.66
Q2 2025	60,602	$10,328	$144.03	$99.70 - $172.71
Q1 2025	60,602	$7,073	$134.92	$106.45 - $166.95
Q4 2024	59,250	$8,066	$134.07	$118.86 - $150.12
Q3 2024	60,711	$7,474	$109.17	$89.96 - $127.97
Q2 2024	62,450	$6,682	$101.02	$82.29 - $113.12
Q1 2024	63,607	$5,931	$76.04	$60.96 - $94.82
Q4 2023	67,034	$5,076	$62.54	$44.65 - $76.56
Q3 2023	70,058	$5,042	$99.67	$71.61 - $123.33
Q2 2023	76,770	$9,057	$97.94	$84.80 - $118.32
Q1 2023	78,260	$7,391	$95.07	$84.89 - $103.50
Q4 2022	79,147	$6,754	$82.03	$62.36 - $96.54
Q3 2022	73,042	$4,638	$77.37	$62.64 - $86.57
Q2 2022	74,982	$5,373	$77.96	$67.31 - $92.03
Q1 2022	75,852	$6,607	$87.37	$71.85 - $99.00
Q4 2021	81,375	$7,509	$91.39	$83.90 - $104.21
Q3 2021	97,535	$8,415	$94.87	$85.11 - $107.25
Q2 2021	95,912	$10,176	$108.58	$93.16 - $122.33
Q1 2021	85,949	$8,053	$85.57	$67.05 - $99.38
Q4 2020	85,954	$5,860	$56.09	$40.18 - $71.11
Q3 2020	85,831	$3,622	$42.99	$36.81 - $49.86
Q2 2020	85,488	$3,836	$37.90	$28.39 - $48.32
Q1 2020	91,239	$2,986	$50.87	$22.51 - $65.00
Q4 2019	91,692	$5,883	$65.85	$59.85 - $73.71
Q3 2019	93,544	$6,074	$58.36	$49.23 - $66.61
Q2 2019	92,427	$4,763	$49.40	$45.52 - $53.80
Q1 2019	97,117	$4,671	$44.93	$39.30 - $48.77
Q4 2018	100,601	$4,080	$43.06	$37.24 - $51.77
Q3 2018	99,244	$4,431	$46.29	$40.20 - $53.45
Q2 2018	99,280	$5,038	$48.31	$43.90 - $54.70
Q1 2018	101,446	$4,773	$50.70	$44.70 - $55.53
Q4 2017	105,002	$5,140	$44.61	$39.83 - $51.20
Q3 2017	106,687	$4,950	$43.56	$38.40 - $49.50
Q2 2017	117,985	$5,327	$43.26	$38.33 - $47.90
Q1 2017	130,478	$5,226	$38.26	$34.33 - $41.90
Q4 2016	136,578	$5,224	$33.93	$27.10 - $40.90
Q3 2016	140,178	$4,169	$27.42	$22.03 - $31.15
Q2 2016	138,878	$3,100	$22.18	$19.13 - $24.67
Q1 2016	141,843	$2,871	$16.37	$12.44 - $20.85
Q4 2015	123,670	$2,149	$17.77	$15.42 - $21.10
Q3 2015	121,732	$1,927	$17.42	$14.48 - $20.91
Q2 2015	121,932	$2,423	$18.69	$15.34 - $21.52
Q1 2015	119,779	$2,312	$19.99	$16.00 - $22.79
Q4 2014	121,979	$2,758	$24.73	$18.14 - $30.70
Q3 2014	120,763	$3,698	$29.73	$26.38 - $32.10
Q2 2014	113,213	$3,489	$37.68	$27.96 - $44.80
Q1 2014	108,113	$4,696	$37.96	$32.27 - $44.03
Q4 2013	107,513	$3,518	$31.66	$29.76 - $34.17
Q3 2013	106,813	$3,236	$32.84	$28.88 - $35.31
Q2 2013	103,525	$3,406	$30.13	$26.27 - $33.97
Q1 2013	95,204	$2,775	$28.68	$25.11 - $31.47