GOSS logo

Gossamer Bio, Inc.

GOSS
Healthcare|Biotechnology|US
$9.77
+0.35 (+3.72%)
DCF Value
$117.58
Cash / Share
$20.66
Next Earnings Report
Mar 12, 2027
EPS est. -$3.69 · Revenue est. $3.0M
Financing Filings (last 12 months)
1
Shelf registrations / offering prospectuses — latest Jan 28, 2026 (S-3ASR). Possible dilution.

Upcoming Data Readouts (1)

Dec 2026
Est. completion
P3Pulmonary Arterial Hypertension
Open-label Extension Study of Seralutinib in Adult Subjects With PAH (PROSERA-EXT)
NCT06274801n=330

Recent Press Releases

Gossamer Bio Submits New Drug Application to U.S. FDA for Seralutinib for the Treatment of Pulmonary Arterial Hypertension
Sep 23, 2026 · Business Wire
Gossamer Bio Appoints Greg Ciongoli to Board of Directors
Sep 16, 2026 · Business Wire
Gossamer Bio Announces Effectiveness of 1-for-80 Reverse Stock Split
Sep 11, 2026 · Business Wire
Gossamer Bio Announces 1-for-80 Reverse Stock Split
Sep 9, 2026 · Business Wire
Gossamer Bio to Present at Cantor Global Healthcare Conference
Sep 4, 2026 · Business Wire
Gossamer Bio Announces Up to $250 Million Structured Private Placement, Including $150 Million of Committed Capital, to Fund Seralutinib Through Potential FDA Approval
Aug 21, 2026 · Business Wire
Gossamer Bio Announces Second Quarter 2026 Financial Results and Provides Business Update
Aug 13, 2026 · Business Wire
Kuehn Law Encourages Investors of Gossamer Bio, Inc. to Contact Law Firm
Aug 10, 2026 · PRNewsWire

SEC Filings (81)

Last two years from EDGAR. Insider Form 4s are on the Ownership tab.

FiledFormWhat it isLinks
Nov 6, 2026SC 13G/APassive 5%+ stakeDocumentIndex
Nov 6, 2026SC 13GPassive 5%+ stakeDocumentIndex
Oct 29, 2026SC 13D/AActivist / 5%+ stakeDocumentIndex
Oct 28, 20268-KMaterial eventDocumentIndex
Oct 8, 2026SC 13D/AActivist / 5%+ stakeDocumentIndex
Sep 28, 2026SC 13D/AActivist / 5%+ stakeDocumentIndex
Sep 28, 20268-KMaterial eventDocumentIndex
Sep 23, 20268-KMaterial eventDocumentIndex
Sep 16, 2026DEF 14AProxy / shareholder voteDocumentIndex
Sep 16, 20268-KMaterial eventDocumentIndex
Sep 11, 20268-KMaterial eventDocumentIndex
Sep 9, 20268-KMaterial eventDocumentIndex
Sep 4, 2026DDocumentIndex
Sep 3, 2026PRE 14AProxy / shareholder voteDocumentIndex
Sep 3, 20268-KMaterial eventDocumentIndex
Aug 26, 20268-KMaterial eventDocumentIndex
Aug 24, 2026SC 13D/AActivist / 5%+ stakeDocumentIndex
Aug 21, 20268-KMaterial eventDocumentIndex
Aug 13, 20268-KMaterial eventDocumentIndex
Aug 13, 202610-QQuarterly reportDocumentIndex
Jul 29, 2026SC 13GPassive 5%+ stakeDocumentIndex
Jul 29, 2026SC 13G/APassive 5%+ stakeDocumentIndex
Jul 27, 20268-KMaterial eventDocumentIndex
Jul 24, 2026SC 13D/AActivist / 5%+ stakeDocumentIndex
Jul 15, 20268-KMaterial eventDocumentIndex
Jul 1, 2026SC 13D/AActivist / 5%+ stakeDocumentIndex
Jul 1, 20268-KMaterial eventDocumentIndex
Jun 17, 20268-KMaterial eventDocumentIndex
Jun 11, 2026SC 13DActivist / 5%+ stakeDocumentIndex
Jun 11, 2026SC 13GPassive 5%+ stakeDocumentIndex
Jun 11, 2026SC 13GPassive 5%+ stakeDocumentIndex
Jun 9, 2026DEF 14AProxy / shareholder voteDocumentIndex
Jun 9, 2026SC 13GPassive 5%+ stakeDocumentIndex
Jun 5, 20268-KMaterial eventDocumentIndex
Jun 5, 20268-KMaterial eventDocumentIndex
Jun 2, 20268-KMaterial eventDocumentIndex
May 18, 2026PRE 14AProxy / shareholder voteDocumentIndex
May 18, 2026DEFA14AProxy / shareholder voteDocumentIndex
May 18, 20268-KMaterial eventDocumentIndex
May 15, 202610-QQuarterly reportDocumentIndex