PROTO LABS INC

Ticker: PRLB CUSIP: 743713109 Class: EQTY

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

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

Q4 2025

Shares 23,144 Value ($000) $1,171 Avg Close $51.15 Range $45.10 - $55.90

Q3 2025

Shares 23,165 Value ($000) $1,159 Avg Close $45.82 Range $38.48 - $51.96

Q2 2025

Shares 23,164 Value ($000) $927 Avg Close $37.26 Range $29.59 - $43.00

Q1 2025

Shares 23,537 Value ($000) $825 Avg Close $39.41 Range $34.08 - $46.73

Q4 2024

Shares 23,537 Value ($000) $920 Avg Close $35.94 Range $26.35 - $45.15

Q3 2024

Shares 23,958 Value ($000) $704 Avg Close $30.51 Range $25.76 - $35.49

Q2 2024

Shares 25,084 Value ($000) $775 Avg Close $31.69 Range $29.71 - $35.74

Q1 2024

Shares 25,804 Value ($000) $922 Avg Close $36.11 Range $33.13 - $41.87

Q4 2023

Shares 27,580 Value ($000) $1,075 Avg Close $32.38 Range $23.01 - $40.47

Q3 2023

Shares 28,973 Value ($000) $765 Avg Close $30.19 Range $25.13 - $36.33

Q2 2023

Shares 31,829 Value ($000) $1,113 Avg Close $31.86 Range $27.73 - $36.38

Q1 2023

Shares 33,917 Value ($000) $1,124 Avg Close $30.94 Range $25.00 - $39.52

Q4 2022

Shares 34,738 Value ($000) $887 Avg Close $29.70 Range $22.04 - $40.09

Q3 2022

Shares 34,533 Value ($000) $1,258 Avg Close $43.34 Range $34.99 - $53.00

Q2 2022

Shares 35,248 Value ($000) $1,686 Avg Close $46.37 Range $39.36 - $55.10

Q1 2022

Shares 35,560 Value ($000) $1,881 Avg Close $52.62 Range $45.63 - $61.14

Q4 2021

Shares 38,655 Value ($000) $1,985 Avg Close $59.00 Range $47.57 - $79.27

Q3 2021

Shares 37,681 Value ($000) $2,510 Avg Close $78.12 Range $66.51 - $93.66

Q2 2021

Shares 38,284 Value ($000) $3,514 Avg Close $98.50 Range $82.60 - $127.65

Q1 2021

Shares 40,334 Value ($000) $4,911 Avg Close $166.30 Range $109.17 - $286.57

Q4 2020

Shares 40,463 Value ($000) $6,207 Avg Close $141.05 Range $113.62 - $203.88

Q3 2020

Shares 40,454 Value ($000) $5,239 Avg Close $131.45 Range $106.69 - $164.99

Q2 2020

Shares 40,317 Value ($000) $4,534 Avg Close $102.64 Range $66.01 - $136.85

Q1 2020

Shares 40,997 Value ($000) $3,121 Avg Close $92.67 Range $63.19 - $114.75

Q4 2019

Shares 41,200 Value ($000) $4,184 Avg Close $99.10 Range $89.02 - $107.86

Q3 2019

Shares 42,032 Value ($000) $4,291 Avg Close $101.95 Range $88.75 - $119.80

Q2 2019

Shares 41,530 Value ($000) $4,818 Avg Close $107.63 Range $97.08 - $119.98

Q1 2019

Shares 41,507 Value ($000) $4,364 Avg Close $112.20 Range $94.20 - $130.60

Q4 2018

Shares 42,430 Value ($000) $4,786 Avg Close $123.33 Range $101.03 - $163.03

Q3 2018

Shares 41,473 Value ($000) $6,708 Avg Close $141.47 Range $115.95 - $166.60

Q2 2018

Shares 41,487 Value ($000) $4,935 Avg Close $122.45 Range $111.20 - $136.40

Q1 2018

Shares 37,787 Value ($000) $4,442 Avg Close $113.00 Range $100.05 - $126.95

Q4 2017

Shares 39,112 Value ($000) $4,029 Avg Close $89.74 Range $79.06 - $109.10

Q3 2017

Shares 39,719 Value ($000) $3,189 Avg Close $72.28 Range $66.85 - $80.40

Q2 2017

Shares 43,916 Value ($000) $2,953 Avg Close $60.44 Range $48.70 - $70.10

Q1 2017

Shares 48,628 Value ($000) $2,485 Avg Close $52.95 Range $48.00 - $60.25

Q4 2016

Shares 50,828 Value ($000) $2,610 Avg Close $52.43 Range $43.10 - $59.65

Q3 2016

Shares 52,228 Value ($000) $3,129 Avg Close $57.54 Range $50.50 - $61.62

Q2 2016

Shares 51,728 Value ($000) $2,977 Avg Close $66.74 Range $55.07 - $82.06

Q1 2016

Shares 49,447 Value ($000) $3,812 Avg Close $64.57 Range $51.61 - $79.65

Q4 2015

Shares 43,191 Value ($000) $2,751 Avg Close $64.50 Range $58.84 - $69.48

Q3 2015

Shares 42,438 Value ($000) $2,843 Avg Close $71.25 Range $65.82 - $79.95

Q2 2015

Shares 42,538 Value ($000) $2,870 Avg Close $70.59 Range $65.84 - $79.00

Q1 2015

Shares 41,421 Value ($000) $2,899 Avg Close $67.69 Range $57.30 - $74.82

Q4 2014

Shares 42,221 Value ($000) $2,836 Avg Close $65.74 Range $54.97 - $73.46

Q3 2014

Shares 41,742 Value ($000) $2,880 Avg Close $78.24 Range $68.88 - $94.23

Q2 2014

Shares 42,815 Value ($000) $3,507 Avg Close $67.73 Range $58.06 - $83.06

Q1 2014

Shares 31,005 Value ($000) $2,098 Avg Close $74.38 Range $62.09 - $84.00

Q4 2013

Shares 30,905 Value ($000) $2,200 Avg Close $77.51 Range $65.52 - $89.97

Q3 2013

Shares 30,705 Value ($000) $2,346 Avg Close $69.23 Range $61.46 - $80.66

Q2 2013

Shares 29,741 Value ($000) $1,932 Avg Close $53.72 Range $43.62 - $67.40

Q1 2013

Shares 9,212 Value ($000) $452 Avg Close $44.26 Range $37.23 - $53.91

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	23,144	$1,171	$51.15	$45.10 - $55.90
Q3 2025	23,165	$1,159	$45.82	$38.48 - $51.96
Q2 2025	23,164	$927	$37.26	$29.59 - $43.00
Q1 2025	23,537	$825	$39.41	$34.08 - $46.73
Q4 2024	23,537	$920	$35.94	$26.35 - $45.15
Q3 2024	23,958	$704	$30.51	$25.76 - $35.49
Q2 2024	25,084	$775	$31.69	$29.71 - $35.74
Q1 2024	25,804	$922	$36.11	$33.13 - $41.87
Q4 2023	27,580	$1,075	$32.38	$23.01 - $40.47
Q3 2023	28,973	$765	$30.19	$25.13 - $36.33
Q2 2023	31,829	$1,113	$31.86	$27.73 - $36.38
Q1 2023	33,917	$1,124	$30.94	$25.00 - $39.52
Q4 2022	34,738	$887	$29.70	$22.04 - $40.09
Q3 2022	34,533	$1,258	$43.34	$34.99 - $53.00
Q2 2022	35,248	$1,686	$46.37	$39.36 - $55.10
Q1 2022	35,560	$1,881	$52.62	$45.63 - $61.14
Q4 2021	38,655	$1,985	$59.00	$47.57 - $79.27
Q3 2021	37,681	$2,510	$78.12	$66.51 - $93.66
Q2 2021	38,284	$3,514	$98.50	$82.60 - $127.65
Q1 2021	40,334	$4,911	$166.30	$109.17 - $286.57
Q4 2020	40,463	$6,207	$141.05	$113.62 - $203.88
Q3 2020	40,454	$5,239	$131.45	$106.69 - $164.99
Q2 2020	40,317	$4,534	$102.64	$66.01 - $136.85
Q1 2020	40,997	$3,121	$92.67	$63.19 - $114.75
Q4 2019	41,200	$4,184	$99.10	$89.02 - $107.86
Q3 2019	42,032	$4,291	$101.95	$88.75 - $119.80
Q2 2019	41,530	$4,818	$107.63	$97.08 - $119.98
Q1 2019	41,507	$4,364	$112.20	$94.20 - $130.60
Q4 2018	42,430	$4,786	$123.33	$101.03 - $163.03
Q3 2018	41,473	$6,708	$141.47	$115.95 - $166.60
Q2 2018	41,487	$4,935	$122.45	$111.20 - $136.40
Q1 2018	37,787	$4,442	$113.00	$100.05 - $126.95
Q4 2017	39,112	$4,029	$89.74	$79.06 - $109.10
Q3 2017	39,719	$3,189	$72.28	$66.85 - $80.40
Q2 2017	43,916	$2,953	$60.44	$48.70 - $70.10
Q1 2017	48,628	$2,485	$52.95	$48.00 - $60.25
Q4 2016	50,828	$2,610	$52.43	$43.10 - $59.65
Q3 2016	52,228	$3,129	$57.54	$50.50 - $61.62
Q2 2016	51,728	$2,977	$66.74	$55.07 - $82.06
Q1 2016	49,447	$3,812	$64.57	$51.61 - $79.65
Q4 2015	43,191	$2,751	$64.50	$58.84 - $69.48
Q3 2015	42,438	$2,843	$71.25	$65.82 - $79.95
Q2 2015	42,538	$2,870	$70.59	$65.84 - $79.00
Q1 2015	41,421	$2,899	$67.69	$57.30 - $74.82
Q4 2014	42,221	$2,836	$65.74	$54.97 - $73.46
Q3 2014	41,742	$2,880	$78.24	$68.88 - $94.23
Q2 2014	42,815	$3,507	$67.73	$58.06 - $83.06
Q1 2014	31,005	$2,098	$74.38	$62.09 - $84.00
Q4 2013	30,905	$2,200	$77.51	$65.52 - $89.97
Q3 2013	30,705	$2,346	$69.23	$61.46 - $80.66
Q2 2013	29,741	$1,932	$53.72	$43.62 - $67.40
Q1 2013	9,212	$452	$44.26	$37.23 - $53.91