Gossamer Bio, Inc. - Common Stock (GOSS)
3.4100
+0.0800 (2.40%)
NASDAQ · Last Trade: Dec 8th, 4:49 PM EST
Detailed Quote
| Previous Close | 3.330 |
|---|---|
| Open | 3.350 |
| Bid | 3.330 |
| Ask | 3.410 |
| Day's Range | 3.350 - 3.460 |
| 52 Week Range | 0.7100 - 3.600 |
| Volume | 1,837,306 |
| Market Cap | 259.14M |
| PE Ratio (TTM) | -4.942 |
| EPS (TTM) | -0.7 |
| Dividend & Yield | N/A (N/A) |
| 1 Month Average Volume | 2,961,364 |
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About Gossamer Bio, Inc. - Common Stock (GOSS)
Gossamer Bio Inc is a biotechnology company focused on discovering and developing innovative medicines to address significant unmet medical needs in various therapeutic areas, including immunology and oncology. The company employs a data-driven approach to identify and advance potential drug candidates through preclinical and clinical stages of development. By leveraging cutting-edge science and technology, Gossamer Bio aims to create targeted treatments that improve patient outcomes and quality of life in complex diseases. Read More
News & Press Releases
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Company will participate in the following investor conferences in December.
By Gossamer Bio, Inc. · Via Business Wire · November 24, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Compensation Committee of Gossamer’s Board of Directors approved the grant, effective November 5th, 2025, to six non-executive employees of non-qualified stock option awards to purchase up to an aggregate of 378,996 shares of the Company’s common stock under the Gossamer Bio, Inc. 2023 Employment Inducement Incentive Award Plan (“2023 Inducement Plan”). The awards were granted as an inducement material to the employees entering into employment with Gossamer in accordance with Nasdaq Listing Rule 5635(c)(4).
By Gossamer Bio, Inc. · Via Business Wire · November 7, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Company will participate in the following investor conferences in November.
By Gossamer Bio, Inc. · Via Business Wire · November 7, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced its financial results for the third quarter ended September 30, 2025, and provided a business update. Gossamer Bio and the Chiesi Group are jointly developing seralutinib under a global collaboration agreement.
By Gossamer Bio, Inc. · Via Business Wire · November 5, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced it has entered into an option agreement to acquire Respira Therapeutics (Respira) and its lead product candidate, RT234, an investigational inhaled vardenafil dry‑powder therapy designed for as needed (PRN) use in pulmonary hypertension (PH), including PAH and PH‑ILD. Despite existing treatment options, the majority of PH patients continue to struggle with debilitating symptoms that disrupt daily life and limit their independence, because there are no approved PRN therapies in PAH or PH-ILD.
By Gossamer Bio, Inc. · Via Business Wire · September 25, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a clinical-stage biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that five scientific presentations related to seralutinib will be presented at the European Respiratory Society (ERS) Congress 2025, which takes place from September 27th through October 1st in Amsterdam, Netherlands and online. Gossamer Bio and the Chiesi Group are jointly developing seralutinib under a global collaboration agreement.
By Gossamer Bio, Inc. · Via Business Wire · September 22, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Compensation Committee of Gossamer’s Board of Directors approved the grant, effective September 5th, 2025, to two non-executive employees of non-qualified stock option awards to purchase up to an aggregate of 87,500 shares of the Company’s common stock under the Gossamer Bio, Inc. 2023 Employment Inducement Incentive Award Plan (“2023 Inducement Plan”). The awards were granted as an inducement material to the employees entering into employment with Gossamer in accordance with Nasdaq Listing Rule 5635(c)(4).
By Gossamer Bio, Inc. · Via Business Wire · September 10, 2025
Via Benzinga · September 10, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Company will present at the following investor conferences in September.
By Gossamer Bio, Inc. · Via Business Wire · August 29, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Compensation Committee of Gossamer’s Board of Directors approved the grant, effective August 5th, 2025, to three non-executive employees of non-qualified stock option awards to purchase up to an aggregate of 168,750 shares of the Company’s common stock under the Gossamer Bio, Inc. 2023 Employment Inducement Incentive Award Plan (“2023 Inducement Plan”). The awards were granted as an inducement material to the employees entering into employment with Gossamer in accordance with Nasdaq Listing Rule 5635(c)(4).
By Gossamer Bio, Inc. · Via Business Wire · August 7, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced its financial results for the second quarter ended June 30, 2025, and provided a business update. Gossamer Bio and the Chiesi Group are jointly developing seralutinib under a global collaboration agreement.
By Gossamer Bio, Inc. · Via Business Wire · August 5, 2025
Via Benzinga · July 14, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced enrollment completion for the ongoing, global registrational Phase 3 PROSERA Study evaluating seralutinib in Functional Class II and III PAH patients. Gossamer Bio and the Chiesi Group are jointly developing seralutinib under a global collaboration agreement.
By Gossamer Bio, Inc. · Via Business Wire · June 16, 2025
Via Stocktwits · June 13, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Compensation Committee of Gossamer’s Board of Directors approved the grant, effective June 5th, 2025, to three non-executive employees of non-qualified stock option awards to purchase up to an aggregate of 69,875 shares of the Company’s common stock under the Gossamer Bio, Inc. 2023 Employment Inducement Incentive Award Plan (“2023 Inducement Plan”). The awards were granted as an inducement material to the employees entering into employment with Gossamer in accordance with Nasdaq Listing Rule 5635(c)(4).
By Gossamer Bio, Inc. · Via Business Wire · June 6, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced its financial results for the first quarter ended March 31, 2025, and announced the closure of new patient screening for the ongoing registrational Phase 3 PROSERA Study in PAH patients.
By Gossamer Bio, Inc. · Via Business Wire · May 15, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that it will report its first quarter 2025 financial results on Thursday, May 15, 2025.
By Gossamer Bio, Inc. · Via Business Wire · May 12, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Compensation Committee of Gossamer’s Board of Directors approved the grant, effective May 5, 2025, to three non-executive employees of non-qualified stock option awards to purchase up to an aggregate of 258,750 shares of the Company’s common stock under the Gossamer Bio, Inc. 2023 Employment Inducement Incentive Award Plan (“2023 Inducement Plan”). The awards were granted as an inducement material to the employees entering into employment with Gossamer in accordance with Nasdaq Listing Rule 5635(c)(4).
By Gossamer Bio, Inc. · Via Business Wire · May 7, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a clinical-stage biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Company will present a poster at the American Thoracic Society (ATS) 2025 International Conference, taking place from May 16th through 21st, in San Francisco, California.
By Gossamer Bio, Inc. · Via Business Wire · May 7, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Compensation Committee of Gossamer’s Board of Directors approved the grant, effective April 7, 2025, to one non-executive employee of non-qualified stock option awards to purchase up to an aggregate of 55,000 shares of the Company’s common stock under the Gossamer Bio, Inc. 2023 Employment Inducement Incentive Award Plan (“2023 Inducement Plan”). The awards were granted as an inducement material to the employee entering into employment with Gossamer in accordance with Nasdaq Listing Rule 5635(c)(4).
By Gossamer Bio, Inc. · Via Business Wire · April 8, 2025
Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced its financial results for the fourth quarter and year ended December 31, 2024, and provided a business update.
By Gossamer Bio, Inc. · Via Business Wire · March 13, 2025

Gossamer Bio, Inc. (Nasdaq: GOSS), a late-stage, clinical biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Compensation Committee of Gossamer’s Board of Directors approved the grant, effective March 5, 2025, to five non-executive employees of non-qualified stock option awards to purchase up to an aggregate of 342,250 shares of the Company’s common stock under the Gossamer Bio, Inc. 2023 Employment Inducement Incentive Award Plan (“2023 Inducement Plan”). The awards were granted as an inducement material to the employees entering into employment with Gossamer in accordance with Nasdaq Listing Rule 5635(c)(4).
By Gossamer Bio, Inc. · Via Business Wire · March 7, 2025

Gossamer Bio, Inc. (Nasdaq: GOSS), a clinical-stage biopharmaceutical company focused on the development and commercialization of seralutinib for the treatment of pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD), today announced that the Compensation Committee of Gossamer’s Board of Directors approved the grant, effective February 5, 2025, to three non-executive employees of non-qualified stock option awards to purchase up to an aggregate of 510,000 shares of the Company’s common stock under the Gossamer Bio, Inc. 2023 Employment Inducement Incentive Award Plan (“2023 Inducement Plan”). The awards were granted as an inducement material to the employees entering into employment with Gossamer in accordance with Nasdaq Listing Rule 5635(c)(4).
By Gossamer Bio, Inc. · Via Business Wire · February 7, 2025