Insider · CIK 0001867872

Aranda Richard

Reports to the SEC for 1 company · SAN DIEGO, CA

sec.gov

Transactions

Companies

Filings

CIK

0001867872

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−488K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+30K sh	—	—	30,000
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+9,167 sh	—	—	9,167
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+22.8K sh	—	—	22,784
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+40K sh	—	—	40,000
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+20K sh	—	—	20,000
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+127K sh	—	—	126,667
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+158K sh	—	—	157,500
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+158K sh	—	—	157,500
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+163K sh	—	—	162,500
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+488K sh	—	—	487,500
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+572K sh	—	—	572,000
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+563K sh	—	—	562,500
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−30K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−9,167 sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−22.8K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−40K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−20K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−127K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−158K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−158K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−163K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−563K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−572K sh	—	—	0
2026-01-02	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+563K sh	—	—	562,500
2026-01-02	GOSSGossamer Bio, Inc.A Award	Chief Medical Officer	AAward	+93.8K sh	—	—	463,106
2025-10-01	GOSSGossamer Bio, Inc.A Award	Chief Medical Officer	AAward	+163K sh	—	—	369,356
2025-03-04	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+572K sh	—	—	572,000
2024-06-24	GOSSGossamer Bio, Inc.S Sale	Chief Medical Officer	SSale	−1,908 sh	$0.66	−$1,260.234	196,891
2024-03-18	GOSSGossamer Bio, Inc.S Sale	Chief Medical Officer	SSale	−4,018 sh	$1.33	−$5,341.931	198,799
2024-01-02	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+488K sh	—	—	487,500
2023-11-20	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+163K sh	—	—	162,500
2023-06-22	GOSSGossamer Bio, Inc.S Sale	Chief Medical Officer	SSale	−1,814 sh	$1.29	−$2,340.06	197,574
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−190K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+127K sh	—	—	126,667
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+20K sh	—	—	20,000
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+40K sh	—	—	40,000
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+22.8K sh	—	—	22,784
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+9,167 sh	—	—	9,167
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+30K sh	—	—	30,000
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−30K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−60K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−34.2K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−13.8K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Medical Officer	DDisposition to Issuer	−45K sh	—	—	0
2023-03-20	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+158K sh	—	—	157,500
2023-03-16	GOSSGossamer Bio, Inc.S Sale	Chief Medical Officer	SSale	−7,563 sh	$1.10	−$8,304.174	199,388
2022-12-07	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Medical Officer	AAward	+158K sh	—	—	157,500
2022-10-24	GOSSGossamer Bio, Inc.S Sale	Chief Medical Officer	SSale	−4,757 sh	$12.07	−$57.4K	205,430
2022-06-22	GOSSGossamer Bio, Inc.S Sale	Chief Medical Officer	SSale	−1,778 sh	$6.88	−$12.2K	209,897

Recent filings

Accepted (ET)
Mar 204
Aranda Richard0001867872-26-000004
SEC(opens sec.gov)

Companies

Gossamer Bio, Inc.Chief Medical OfficerGOSS

Address

3115 MERRYFIELD ROW, SUITE 120

SAN DIEGO, CA, 92121