KRYSTAL BIOTECH INC

Ticker: KRYS CUSIP: 501147102 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q3 2025

Shares 160 Value ($000) $28 Avg Close $149.68 Range $130.50 - $178.20

Q1 2024

Shares 1,192 Value ($000) $212 Avg Close $138.91 Range $107.50 - $189.97

Q4 2021

Shares 465 Value ($000) $33 Avg Close $58.21 Range $38.86 - $102.99

Q1 2021

Shares 556 Value ($000) $43 Avg Close $72.70 Range $57.06 - $87.29

Q4 2020

Shares 400 Value ($000) $24 Avg Close $49.94 Range $40.04 - $62.95

Q3 2020

Shares 400 Value ($000) $17 Avg Close $43.43 Range $37.68 - $48.80

Q2 2020

Shares 300 Value ($000) $12 Avg Close $48.11 Range $35.33 - $61.86

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	160	$28	$149.68	$130.50 - $178.20
Q1 2024	1,192	$212	$138.91	$107.50 - $189.97
Q4 2021	465	$33	$58.21	$38.86 - $102.99
Q1 2021	556	$43	$72.70	$57.06 - $87.29
Q4 2020	400	$24	$49.94	$40.04 - $62.95
Q3 2020	400	$17	$43.43	$37.68 - $48.80
Q2 2020	300	$12	$48.11	$35.33 - $61.86