CASTLE BIOSCIENCES INC

Ticker: CSTL CUSIP: 14843C105 Class: Common Stock

CHARLES SCHWAB INVESTMENT MANAGEMENT INC's Holding History (CIK: 0000884546)

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

Q4 2025

Shares 242,535 Value ($000) $9,435 Avg Close $32.24 Range $22.05 - $42.17

Q3 2025

Shares 238,154 Value ($000) $5,423 Avg Close $20.31 Range $14.59 - $24.74

Q2 2025

Shares 235,015 Value ($000) $4,799 Avg Close $18.51 Range $15.45 - $22.82

Q1 2025

Shares 242,258 Value ($000) $4,850 Avg Close $24.76 Range $18.70 - $32.74

Q4 2024

Shares 258,866 Value ($000) $6,899 Avg Close $30.46 Range $25.82 - $35.84

Q3 2024

Shares 274,761 Value ($000) $7,836 Avg Close $25.45 Range $16.96 - $32.53

Q2 2024

Shares 235,344 Value ($000) $5,123 Avg Close $22.28 Range $18.50 - $25.91

Q1 2024

Shares 204,937 Value ($000) $4,539 Avg Close $21.76 Range $17.42 - $25.60

Q4 2023

Shares 207,295 Value ($000) $4,473 Avg Close $17.60 Range $12.07 - $22.66

Q3 2023

Shares 200,989 Value ($000) $3,395 Avg Close $17.49 Range $13.18 - $20.96

Q2 2023

Shares 185,995 Value ($000) $2,552 Avg Close $20.26 Range $9.26 - $26.70

Q1 2023

Shares 183,666 Value ($000) $4,173 Avg Close $24.43 Range $18.79 - $29.59

Q4 2022

Shares 184,536 Value ($000) $4,344 Avg Close $23.18 Range $17.82 - $30.08

Q3 2022

Shares 177,626 Value ($000) $4,633 Avg Close $28.03 Range $21.78 - $36.09

Q2 2022

Shares 171,041 Value ($000) $3,755 Avg Close $23.24 Range $15.58 - $47.27

Q1 2022

Shares 166,113 Value ($000) $7,452 Avg Close $41.32 Range $31.46 - $48.40

Q4 2021

Shares 161,915 Value ($000) $6,942 Avg Close $52.25 Range $37.99 - $68.65

Q3 2021

Shares 158,423 Value ($000) $10,536 Avg Close $70.37 Range $57.64 - $78.58

Q2 2021

Shares 133,253 Value ($000) $9,772 Avg Close $66.05 Range $48.01 - $78.92

Q1 2021

Shares 116,647 Value ($000) $7,986 Avg Close $75.16 Range $56.74 - $107.69

Q4 2020

Shares 105,052 Value ($000) $7,055 Avg Close $54.21 Range $43.37 - $78.39

Q3 2020

Shares 85,526 Value ($000) $4,401 Avg Close $44.49 Range $36.15 - $52.41

Q2 2020

Shares 23,222 Value ($000) $876 Avg Close $34.17 Range $25.07 - $44.53

Q1 2020

Shares 22,602 Value ($000) $674 Avg Close $30.17 Range $21.01 - $36.39

Q4 2019

Shares 10,335 Value ($000) $356 Avg Close $24.45 Range $15.26 - $39.77

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	242,535	$9,435	$32.24	$22.05 - $42.17
Q3 2025	238,154	$5,423	$20.31	$14.59 - $24.74
Q2 2025	235,015	$4,799	$18.51	$15.45 - $22.82
Q1 2025	242,258	$4,850	$24.76	$18.70 - $32.74
Q4 2024	258,866	$6,899	$30.46	$25.82 - $35.84
Q3 2024	274,761	$7,836	$25.45	$16.96 - $32.53
Q2 2024	235,344	$5,123	$22.28	$18.50 - $25.91
Q1 2024	204,937	$4,539	$21.76	$17.42 - $25.60
Q4 2023	207,295	$4,473	$17.60	$12.07 - $22.66
Q3 2023	200,989	$3,395	$17.49	$13.18 - $20.96
Q2 2023	185,995	$2,552	$20.26	$9.26 - $26.70
Q1 2023	183,666	$4,173	$24.43	$18.79 - $29.59
Q4 2022	184,536	$4,344	$23.18	$17.82 - $30.08
Q3 2022	177,626	$4,633	$28.03	$21.78 - $36.09
Q2 2022	171,041	$3,755	$23.24	$15.58 - $47.27
Q1 2022	166,113	$7,452	$41.32	$31.46 - $48.40
Q4 2021	161,915	$6,942	$52.25	$37.99 - $68.65
Q3 2021	158,423	$10,536	$70.37	$57.64 - $78.58
Q2 2021	133,253	$9,772	$66.05	$48.01 - $78.92
Q1 2021	116,647	$7,986	$75.16	$56.74 - $107.69
Q4 2020	105,052	$7,055	$54.21	$43.37 - $78.39
Q3 2020	85,526	$4,401	$44.49	$36.15 - $52.41
Q2 2020	23,222	$876	$34.17	$25.07 - $44.53
Q1 2020	22,602	$674	$30.17	$21.01 - $36.39
Q4 2019	10,335	$356	$24.45	$15.26 - $39.77