TECTONIC THERAPEUTIC INC

Ticker: TECX CUSIP: 878972108 Class: Common Stock

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

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

Q4 2025

Shares 541 Value ($000) $11 Avg Close $18.58 Range $14.60 - $26.00

Q3 2025

Shares 173 Value ($000) $3 Avg Close $20.64 Range $14.39 - $27.33

Q3 2024

Shares 1 Value ($000) $0 Avg Close $18.28 Range $15.08 - $31.66

Q2 2024

Shares 1 Value ($000) $0 Avg Close $15.77 Range $1.40 - $18.48

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	541	$11	$18.58	$14.60 - $26.00
Q3 2025	173	$3	$20.64	$14.39 - $27.33
Q3 2024	1	$0	$18.28	$15.08 - $31.66
Q2 2024	1	$0	$15.77	$1.40 - $18.48