TECTONIC THERAPEUTIC INC

Ticker: TECX CUSIP: 878972108 Class: Common Stock

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q4 2025

Shares 752 Value ($000) $16 Avg Close $18.58 Range $14.60 - $26.00

Q3 2025

Shares 1,465 Value ($000) $23 Avg Close $20.64 Range $14.39 - $27.33

Q2 2025

Shares 1,247 Value ($000) $25 Avg Close $20.27 Range $13.70 - $25.75

Q1 2025

Shares 833 Value ($000) $15 Avg Close $32.59 Range $15.30 - $61.07

Q4 2024

Shares 216 Value ($000) $10 Avg Close $42.29 Range $27.21 - $53.41

Q2 2024

Shares 112 Value ($000) $2 Avg Close $15.77 Range $1.40 - $18.48

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	752	$16	$18.58	$14.60 - $26.00
Q3 2025	1,465	$23	$20.64	$14.39 - $27.33
Q2 2025	1,247	$25	$20.27	$13.70 - $25.75
Q1 2025	833	$15	$32.59	$15.30 - $61.07
Q4 2024	216	$10	$42.29	$27.21 - $53.41
Q2 2024	112	$2	$15.77	$1.40 - $18.48