GOSSAMER BIO INC

Ticker: GOSS CUSIP: 38341P102 Class: Common Stock

TWO SIGMA SECURITIES, LLC's Holding History (CIK: 0001450144)

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

Q4 2025

Shares 27,056 Value ($000) $84 Avg Close $2.85 Range $2.08 - $3.87

Q3 2025

Shares 16,337 Value ($000) $43 Avg Close $2.20 Range $1.20 - $3.60

Q4 2023

Shares 31,683 Value ($000) $29 Avg Close $0.74 Range $0.45 - $1.13

Q3 2023

Shares 10,324 Value ($000) $9 Avg Close $1.15 Range $0.76 - $1.88

Q4 2022

Shares 109,084 Value ($000) $237 Avg Close $8.23 Range $1.57 - $13.68

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	27,056	$84	$2.85	$2.08 - $3.87
Q3 2025	16,337	$43	$2.20	$1.20 - $3.60
Q4 2023	31,683	$29	$0.74	$0.45 - $1.13
Q3 2023	10,324	$9	$1.15	$0.76 - $1.88
Q4 2022	109,084	$237	$8.23	$1.57 - $13.68