Last week we submitted our first New Drug Application to the FDA for seralutinib in PAH. An NDA is the formal application requesting that the FDA review a medicine to determine whether it may be approved for use in patients. #PAH #PulmonaryHypertension

A lot has happened since our last update. Productive FDA engagement, a planned fall NDA submission for seralutinib in PAH, reacquired worldwide rights, and up to $250M in financing. Energized for what’s ahead. See you at #ERS2026! #PAH

Gossamer teams up with Dr. Marc Simon of UCSF at PHA walk to raise awareness and support for the pulmonary hypertension patient community. #PHA

We were pleased to join leading experts at the PH West Utah Pulmonary Hypertension Symposium to discuss some of the latest research and clinical guidance in #PH. Thank you to the organizers and speakers for an engaging and impactful event!

It’s so important to listen to patient voices. @phaware’s podcast shares stories from those living with #PH, their caregivers, & medical professionals. Listen here: loom.ly/nCQIf9M #PHAwareness

It’s been an incredible year for us at Gossamer Bio, and we’re excited for what’s ahead as we continue to work toward our mission: enhancing the lives of people living with #PAH and #PH-ILD. Wishing everyone a joyful and peaceful festive season. Happy holidays!

Grateful to @TeamPHHope for an impactful 3rd Annual PHenomenal Hope Symposium. The focus on advancing knowledge, research, and advocacy in #PH was energizing, and we’re committed to continuing to support progress in patient-centered research.

We were proud to support the 22nd Annual Update in Pulmonary Hypertension in Boston. Organized in partnership with @TuftsMedicalCtr, the symposium brought together leading experts in #PH to share the latest research and guidance. #PulmonaryHypertension #Research

As #PHAwarenessMonth ends, our mission continues: advancing science, improving care, and supporting those affected by PH. We celebrate the PH community’s strength and dedication to raising awareness all year round. #EmPHasizeYourHealth

Here at Gossamer Bio, we’re thankful for another year of working together to improve the lives of those affected by pulmonary hypertension. Happy Thanksgiving to those who celebrate!

We’re excited to join the 3rd annual PHenomenal Hope Research Symposium on Dec 5 in Boston! With a focus on patient-centered innovation and care, we’re proud to support such an important event. Thank you @TeamPHHope for helping drive progress in the field.

We were honored to support this year’s Right Heart Fight on Nov 8 in Oklahoma, bringing the #PH community together to raise funds & awareness. Events like this remind us why our work matters. We look forward to continuing the fight for healthier futures. #PHAwarenessMonth

Advancing pulmonary hypertension research requires global collaboration. This #PHAwarenessMonth, we extend our heartfelt thanks to everyone involved in this important work. #EmPHasizeYourHealth #PHAwareness

We were delighted to attend and support the @PFFOrg Summit, November 13-15, 2025 in Chicago – the world’s largest conference on pulmonary fibrosis and interstitial lung disease. It was a fantastic opportunity to learn, connect and collaborate. Thank you to the PFF for organizing!

A key highlight of #PHAwarenessMonth so far was the opportunity to connect with many of the leading patient organizations at the Annual Pulmonary Hypertension European Conference (#APHEC). Thank you for a great meeting, PHA Europe!

This #PHAwarenessMonth, we want to recognize the amazing patient groups who support people living with pulmonary hypertension. #EmPHasizeYourHealth

It was a pleasure to join the Dallas Zebra PHest O2breathe Walk, organized by the @PHAssociation. Events like these bring the #PH community together — celebrating their strength, raising awareness, and sharing valuable resources. #PHAwarenessMonth

Pulmonary hypertension affects people worldwide. This November, we join the global PH community to #EmPHasizeYourHealth – highlighting the importance of caring for your physical and emotional wellbeing and encouraging screening for those at risk. #PHAwarenessMonth @PHAssociation

For #media and #investors: #Earnings update: Gossamer Bio announces third quarter financial results including business updates. Learn more: loom.ly/3X2KyR0

Last Saturday, the #PH community came together for the PHenomenal Hope Run/Walk in Albuquerque and the Chicago Stride O2breathe Walk. Thank you @teamPHHope and @PHAssociation for organizing these inspiring events that raise awareness and support those living with PH.