TECTONIC THERAPEUTIC INC

Ticker: TECX CUSIP: 878972108 Class: Common Stock

EcoR1 Capital, LLC's Holding History (CIK: 0001587114)

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

Q2 2025

Shares 935,121 Value ($000) $18,581 Avg Close $20.27 Range $13.70 - $25.75

Q1 2025

Shares 935,121 Value ($000) $16,561 Avg Close $32.59 Range $15.30 - $61.07

Q4 2024

Shares 849,143 Value ($000) $39,205 Avg Close $42.29 Range $27.21 - $53.41

Q3 2024

Shares 849,143 Value ($000) $25,729 Avg Close $18.28 Range $15.08 - $31.66

Q2 2024

Shares 849,143 Value ($000) $13,985 Avg Close $15.77 Range $1.40 - $18.48

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	935,121	$18,581	$20.27	$13.70 - $25.75
Q1 2025	935,121	$16,561	$32.59	$15.30 - $61.07
Q4 2024	849,143	$39,205	$42.29	$27.21 - $53.41
Q3 2024	849,143	$25,729	$18.28	$15.08 - $31.66
Q2 2024	849,143	$13,985	$15.77	$1.40 - $18.48