GOSSAMER BIO INC

Ticker: GOSS CUSIP: 38341P102 Class: Common Stock

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

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

Q1 2024

Shares 9,195,404 Value ($000) $10,851 Avg Close $1.10 Range $0.76 - $1.60

Q4 2023

Shares 9,195,404 Value ($000) $8,391 Avg Close $0.74 Range $0.45 - $1.13

Q3 2023

Shares 9,195,404 Value ($000) $7,658 Avg Close $1.15 Range $0.76 - $1.88

Q3 2022

Shares 4,160,887 Value ($000) $49,847 Avg Close $12.41 Range $6.82 - $15.20

Q4 2020

Shares 294,221 Value ($000) $2,845 Avg Close $9.85 Range $7.92 - $13.65

Q2 2019

Shares 772,096 Value ($000) $17,125 Avg Close $19.13 Range $15.59 - $23.17

Q1 2019

Shares 772,096 Value ($000) $16,731 Avg Close $20.85 Range $16.00 - $25.06

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2024	9,195,404	$10,851	$1.10	$0.76 - $1.60
Q4 2023	9,195,404	$8,391	$0.74	$0.45 - $1.13
Q3 2023	9,195,404	$7,658	$1.15	$0.76 - $1.88
Q3 2022	4,160,887	$49,847	$12.41	$6.82 - $15.20
Q4 2020	294,221	$2,845	$9.85	$7.92 - $13.65
Q2 2019	772,096	$17,125	$19.13	$15.59 - $23.17
Q1 2019	772,096	$16,731	$20.85	$16.00 - $25.06