QUODD

Insider Transactions last 24 months for Gossamer Bio, Inc. - NSDQ: GOSS

Transactions
All	Buy	Sell	Option Exercise

Filer's Name	Relationship/ Title	Trans. Date	Trans. Type	Ownership Type	Security Type	Shares	Price	Trans. Value	Total Shares Owned
Hasnain Faheem	President & CEO	01/02/2026	AA	Direct	COM	280,000	$0.00	$0.00	837,793
Christian Waage	EVP, Tech Ops and Admin	01/02/2026	AA	Direct	COM	84,500	$0.00	$0.00	814,061
Giraudo Bryan	COO/CFO	01/02/2026	AA	Direct	COM	115,750	$0.00	$0.00	389,737
Peterson Caryn	EVP, Regulatory Affairs	01/02/2026	AA	Direct	COM	84,500	$0.00	$0.00	259,333
Aranda Richard	Chief Medical Officer	01/02/2026	AA	Direct	COM	93,750	$0.00	$0.00	463,106
Smith Robert Paul Jr	Chief Commercial Officer	01/02/2026	AA	Direct	COM	93,750	$0.00	$0.00	260,898
Hasnain Faheem	President & CEO	10/01/2025	AA	Direct	COM	437,500	$0.00	$0.00	557,793
Christian Waage	EVP, Tech Ops and Admin	10/01/2025	AA	Direct	COM	125,000	$0.00	$0.00	710,934
Giraudo Bryan	COO/CFO	10/01/2025	AA	Direct	COM	181,250	$0.00	$0.00	273,987
Peterson Caryn	EVP, Regulatory Affairs	10/01/2025	AA	Direct	COM	125,000	$0.00	$0.00	174,833
Aranda Richard	Chief Medical Officer	10/01/2025	AA	Direct	COM	162,500	$0.00	$0.00	369,356
Smith Robert Paul Jr	Chief Commercial Officer	10/01/2025	AA	Direct	COM	162,500	$0.00	$0.00	162,500
Milligan Sandra	Director	08/19/2025	AP	Direct	COM	26,050	$1.92	$50,016.00	58,050
Aranda Richard	Chief Medical Officer	06/24/2024	DS	Direct	COM	1,908	$0.66	$1,260.23	196,891
Hasnain Faheem	President & CEO	06/21/2024	AP	Indirect	COM	372,000	$0.67	$250,281.60	5,408,073
Giraudo Bryan	COO/CFO	06/18/2024	AP	Indirect	COM	100,000	$0.59	$59,110.00	480,010
Smith Robert Paul Jr	Chief Commercial Officer	06/17/2024	AP	Indirect	COM	25,000	$0.60	$15,050.00	25,000

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Transaction Type Key First letter: A = Acquired, D = Disposed Second letter: A = Grant, award or other acquisition pursuant to Rule 16b-3(d) C = Conversion of derivative security \| D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) \| E = Expiration of short derivative position \| F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. \| G = Gift \| H = Expiration (or cancellation) of long derivative position with value received \| I = Discretionary transaction in accordance with Rule 16b-3(f) \| J = Other \| L = Small acquisition under Rule 16a-6 \| M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 \| O = Exercise of out-of-the-money derivative security \| P = Open market or private purchase \| S = Open market or private sale \| U = Disposition pursuant to a tender of shares in a change of control transaction \| W = Acquisition or disposition by will or the laws of descent and distribution \| X = Exercise of in-the-money or at-the-money derivative security \| Z = Deposit into or withdrawal from voting trust		Send to Excel

Transaction Type Key
First letter: A = Acquired, D = Disposed
Second letter:
A = Grant, award or other acquisition pursuant to Rule 16b-3(d) C = Conversion of derivative security | D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) | E = Expiration of short derivative position | F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. | G = Gift | H = Expiration (or cancellation) of long derivative position with value received | I = Discretionary transaction in accordance with Rule 16b-3(f) | J = Other | L = Small acquisition under Rule 16a-6 | M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | O = Exercise of out-of-the-money derivative security | P = Open market or private purchase | S = Open market or private sale | U = Disposition pursuant to a tender of shares in a change of control transaction | W = Acquisition or disposition by will or the laws of descent and distribution | X = Exercise of in-the-money or at-the-money derivative security | Z = Deposit into or withdrawal from voting trust

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