GOSSAMER BIO INC

Ticker: GOSS CUSIP: 38341P102 Class: Common Stock

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q4 2025

Shares 704,787 Value ($000) $2,185 Avg Close $2.85 Range $2.08 - $3.87

Q3 2025

Shares 2,284,216 Value ($000) $6,007 Avg Close $2.20 Range $1.20 - $3.60

Q2 2025

Shares 767,561 Value ($000) $944 Avg Close $1.09 Range $0.76 - $1.44

Q1 2025

Shares 156,932 Value ($000) $173 Avg Close $1.16 Range $0.82 - $1.55

Q4 2024

Shares 140,007 Value ($000) $127 Avg Close $0.86 Range $0.66 - $1.10

Q3 2024

Shares 1,040,053 Value ($000) $1,026 Avg Close $0.96 Range $0.77 - $1.37

Q2 2024

Shares 4,093,836 Value ($000) $3,688 Avg Close $0.75 Range $0.50 - $1.28

Q1 2024

Shares 3,874,726 Value ($000) $4,572 Avg Close $1.10 Range $0.76 - $1.60

Q4 2023

Shares 6,140,232 Value ($000) $5,603 Avg Close $0.74 Range $0.45 - $1.13

Q3 2023

Shares 6,168,143 Value ($000) $5,137 Avg Close $1.15 Range $0.76 - $1.88

Q2 2023

Shares 1,426,469 Value ($000) $1,712 Avg Close $1.25 Range $0.91 - $1.62

Q1 2023

Shares 2,794,717 Value ($000) $3,521 Avg Close $1.91 Range $0.96 - $3.06

Q3 2022

Shares 731,264 Value ($000) $8,761 Avg Close $12.41 Range $6.82 - $15.20

Q2 2022

Shares 2,282,849 Value ($000) $19,108 Avg Close $7.75 Range $5.64 - $10.21

Q1 2022

Shares 2,144,311 Value ($000) $18,613 Avg Close $9.64 Range $8.06 - $12.86

Q4 2021

Shares 1,875,751 Value ($000) $21,214 Avg Close $11.88 Range $9.87 - $14.30

Q3 2021

Shares 1,587,951 Value ($000) $19,960 Avg Close $9.21 Range $7.04 - $14.10

Q2 2021

Shares 15,801 Value ($000) $128 Avg Close $8.67 Range $7.63 - $9.82

Q1 2021

Shares 580,796 Value ($000) $5,372 Avg Close $10.08 Range $8.41 - $11.91

Q4 2020

Shares 770,758 Value ($000) $7,454 Avg Close $9.85 Range $7.92 - $13.65

Q3 2020

Shares 79,472 Value ($000) $986 Avg Close $13.26 Range $11.16 - $15.42

Q2 2020

Shares 46,186 Value ($000) $600 Avg Close $12.58 Range $9.46 - $16.79

Q1 2020

Shares 314,452 Value ($000) $3,191 Avg Close $13.06 Range $7.52 - $15.76

Q4 2019

Shares 41,624 Value ($000) $650 Avg Close $20.14 Range $14.16 - $27.15

Q3 2019

Shares 922,944 Value ($000) $15,497 Avg Close $19.88 Range $15.97 - $22.93

Q2 2019

Shares 926,922 Value ($000) $20,560 Avg Close $19.13 Range $15.59 - $23.17

Q1 2019

Shares 972,573 Value ($000) $21,076 Avg Close $20.85 Range $16.00 - $25.06

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	704,787	$2,185	$2.85	$2.08 - $3.87
Q3 2025	2,284,216	$6,007	$2.20	$1.20 - $3.60
Q2 2025	767,561	$944	$1.09	$0.76 - $1.44
Q1 2025	156,932	$173	$1.16	$0.82 - $1.55
Q4 2024	140,007	$127	$0.86	$0.66 - $1.10
Q3 2024	1,040,053	$1,026	$0.96	$0.77 - $1.37
Q2 2024	4,093,836	$3,688	$0.75	$0.50 - $1.28
Q1 2024	3,874,726	$4,572	$1.10	$0.76 - $1.60
Q4 2023	6,140,232	$5,603	$0.74	$0.45 - $1.13
Q3 2023	6,168,143	$5,137	$1.15	$0.76 - $1.88
Q2 2023	1,426,469	$1,712	$1.25	$0.91 - $1.62
Q1 2023	2,794,717	$3,521	$1.91	$0.96 - $3.06
Q3 2022	731,264	$8,761	$12.41	$6.82 - $15.20
Q2 2022	2,282,849	$19,108	$7.75	$5.64 - $10.21
Q1 2022	2,144,311	$18,613	$9.64	$8.06 - $12.86
Q4 2021	1,875,751	$21,214	$11.88	$9.87 - $14.30
Q3 2021	1,587,951	$19,960	$9.21	$7.04 - $14.10
Q2 2021	15,801	$128	$8.67	$7.63 - $9.82
Q1 2021	580,796	$5,372	$10.08	$8.41 - $11.91
Q4 2020	770,758	$7,454	$9.85	$7.92 - $13.65
Q3 2020	79,472	$986	$13.26	$11.16 - $15.42
Q2 2020	46,186	$600	$12.58	$9.46 - $16.79
Q1 2020	314,452	$3,191	$13.06	$7.52 - $15.76
Q4 2019	41,624	$650	$20.14	$14.16 - $27.15
Q3 2019	922,944	$15,497	$19.88	$15.97 - $22.93
Q2 2019	926,922	$20,560	$19.13	$15.59 - $23.17
Q1 2019	972,573	$21,076	$20.85	$16.00 - $25.06