GOSSAMER BIO INC

Ticker: GOSS CUSIP: 38341P102 Class: Common Stock

TWO SIGMA INVESTMENTS, LP's Holding History (CIK: 0001179392)

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

Q4 2025

Shares 3,397,110 Value ($000) $10,531 Avg Close $2.85 Range $2.08 - $3.87

Q3 2025

Shares 2,287,251 Value ($000) $6,015 Avg Close $2.20 Range $1.20 - $3.60

Q2 2025

Shares 1,745,127 Value ($000) $2,147 Avg Close $1.09 Range $0.76 - $1.44

Q1 2025

Shares 1,275,412 Value ($000) $1,403 Avg Close $1.16 Range $0.82 - $1.55

Q4 2024

Shares 891,279 Value ($000) $806 Avg Close $0.86 Range $0.66 - $1.10

Q3 2024

Shares 630,961 Value ($000) $622 Avg Close $0.96 Range $0.77 - $1.37

Q2 2024

Shares 309,979 Value ($000) $279 Avg Close $0.75 Range $0.50 - $1.28

Q1 2024

Shares 808,771 Value ($000) $954 Avg Close $1.10 Range $0.76 - $1.60

Q4 2023

Shares 1,022,261 Value ($000) $933 Avg Close $0.74 Range $0.45 - $1.13

Q3 2023

Shares 536,095 Value ($000) $446 Avg Close $1.15 Range $0.76 - $1.88

Q2 2023

Shares 1,569,368 Value ($000) $1,883 Avg Close $1.25 Range $0.91 - $1.62

Q1 2023

Shares 1,875,319 Value ($000) $2,363 Avg Close $1.91 Range $0.96 - $3.06

Q4 2022

Shares 1,463,120 Value ($000) $3,175 Avg Close $8.23 Range $1.57 - $13.68

Q3 2022

Shares 925,727 Value ($000) $11,090 Avg Close $12.41 Range $6.82 - $15.20

Q2 2022

Shares 245,560 Value ($000) $2,055 Avg Close $7.75 Range $5.64 - $10.21

Q1 2022

Shares 449,057 Value ($000) $3,898 Avg Close $9.64 Range $8.06 - $12.86

Q4 2021

Shares 332,251 Value ($000) $3,758 Avg Close $11.88 Range $9.87 - $14.30

Q3 2021

Shares 189,360 Value ($000) $2,380 Avg Close $9.21 Range $7.04 - $14.10

Q2 2021

Shares 478,060 Value ($000) $3,882 Avg Close $8.67 Range $7.63 - $9.82

Q1 2021

Shares 698,075 Value ($000) $6,457 Avg Close $10.08 Range $8.41 - $11.91

Q4 2020

Shares 168,855 Value ($000) $1,633 Avg Close $9.85 Range $7.92 - $13.65

Q3 2020

Shares 357,563 Value ($000) $4,437 Avg Close $13.26 Range $11.16 - $15.42

Q2 2020

Shares 293,019 Value ($000) $3,809 Avg Close $12.58 Range $9.46 - $16.79

Q1 2020

Shares 27,466 Value ($000) $279 Avg Close $13.06 Range $7.52 - $15.76

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,397,110	$10,531	$2.85	$2.08 - $3.87
Q3 2025	2,287,251	$6,015	$2.20	$1.20 - $3.60
Q2 2025	1,745,127	$2,147	$1.09	$0.76 - $1.44
Q1 2025	1,275,412	$1,403	$1.16	$0.82 - $1.55
Q4 2024	891,279	$806	$0.86	$0.66 - $1.10
Q3 2024	630,961	$622	$0.96	$0.77 - $1.37
Q2 2024	309,979	$279	$0.75	$0.50 - $1.28
Q1 2024	808,771	$954	$1.10	$0.76 - $1.60
Q4 2023	1,022,261	$933	$0.74	$0.45 - $1.13
Q3 2023	536,095	$446	$1.15	$0.76 - $1.88
Q2 2023	1,569,368	$1,883	$1.25	$0.91 - $1.62
Q1 2023	1,875,319	$2,363	$1.91	$0.96 - $3.06
Q4 2022	1,463,120	$3,175	$8.23	$1.57 - $13.68
Q3 2022	925,727	$11,090	$12.41	$6.82 - $15.20
Q2 2022	245,560	$2,055	$7.75	$5.64 - $10.21
Q1 2022	449,057	$3,898	$9.64	$8.06 - $12.86
Q4 2021	332,251	$3,758	$11.88	$9.87 - $14.30
Q3 2021	189,360	$2,380	$9.21	$7.04 - $14.10
Q2 2021	478,060	$3,882	$8.67	$7.63 - $9.82
Q1 2021	698,075	$6,457	$10.08	$8.41 - $11.91
Q4 2020	168,855	$1,633	$9.85	$7.92 - $13.65
Q3 2020	357,563	$4,437	$13.26	$11.16 - $15.42
Q2 2020	293,019	$3,809	$12.58	$9.46 - $16.79
Q1 2020	27,466	$279	$13.06	$7.52 - $15.76