Investor FAQs

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Where is Gossamer headquartered?
3013 Science Park Road
San Diego, CA 92121
Where is Gossamer incorporated?
Gossamer is incorporated in Delaware.
When was Gossamer founded?
Gossamer was founded in 2015.
Which stock exchange are Gossamer shares traded on and what is the company’s ticker?
Gossamer’s stock is traded on the Nasdaq Global Select Market under the ticker “GOSS.”
When did the Company go public?
Gossamer’s initial public offering was on February 8, 2019.
When does Gossamer’s fiscal year end?
Gossamer’s fiscal year ends on December 31.
Who is Gossamer’s independent registered public accounting firm?
Ernst & Young LLP
What is Gossamer’s CUSIP number?
38341P 102
How can I purchase Gossamer shares?
Shares of Gossamer’s common stock can be purchased by contacting a securities broker of your choice.
Does Gossamer have a direct stock purchase plan?
Gossamer does not currently offer a direct stock purchase plan.
Does Gossamer pay dividends and have a dividend reinvestment program?
Currently, Gossamer does not offer a dividend or a dividend reinvestment program.
Who is Gossamer’s transfer agent?
Gossamer’s transfer agent is Computershare Limited. You can find more information about how to contact Computershare Trust Company at:

Computershare Limited
1290 Avenue of Americas, 9th Floor
New York, NY 10104
https://www-us.computershare.com/Investor/Contact
How can I replace my lost stock certificates?
If you have misplaced your stock certificates, please contact Gossamer’s transfer agent, Computershare. There may be a fee involved for replacing lost stock certificates.
How do I report a change of mailing address?
If the shares are held in your name, you must contact Gossamer’s transfer agent, Computershare Limited. If your shares are held in street name, you must contact your broker to update your address.
How can I get a copy of Gossamer’s Annual Report or any other investor material?
Quarterly & Annual reports and other investor materials are available under “Filings” in the “Investors” section of Gossamer’s corporate website. Additionally, all SEC filings can also be accessed directly from the SEC at www.sec.gov.
How can I sign up to receive Gossamer press releases and other company information?
Please visit the “Investors” section of Gossamer’s corporate website and choose the “Email Alerts” link under “Info” to be added to the Gossamer distribution list.
Who can I contact if I am a member of the media?
For media inquiries, please contact:

Media Inquiries
media@gossamerbio.com
Whom should I contact if I have further questions?
Gossamer Bio Investor Relations
ir@gossamerbio.com