Investor FAQ

Investor FAQ

Where is GBT’s corporate headquarters?

GBT is headquartered at 171 Oyster Point Blvd., Suite 300, South San Francisco, CA 94080. The main phone number is 1-883-GBT-CORP (1-833-428-2677).

When was the company founded?

GBT was incorporated in February 2011 and launched in 2012.

Where is the company incorporated?

GBT is incorporated in the state of Delaware.

When did GBT go public?

GBT’s stock began publicly trading on August 12, 2015.

When is GBT’s fiscal year-end?

December 31st.

How is GBT stock traded?

GBT is traded on the NASDAQ Global Select Market under the ticker symbol GBT and its CUSIP number is 37890U 108.

Who is GBT’s transfer agent?

Communication regarding transfer requirements, lost certificates and changes of address should be directed to:

Continental Stock Transfer & Trust
1 State Street, 30th Floor
New York, NY 10004-1561
Phone: (212) 509-4000

Who are GBT’s independent auditors?

Suite 1400
55 Second Street
San Francisco, CA 94105
Tricia Suvari
Chief Legal Officer
171 Oyster Point Blvd., Suite 300
South San Francisco, CA 94080

Where can I get the latest corporate news releases and financial reports?

GBT’s press release archives can be viewed at

How can I view documents GBT has filed with the Securities & Exchange Commission (SEC), including Forms 10-K and 10-Q?

Whom should I contact if I have further questions?

You can submit queries to GBT’s investor relations department by contacting 1-883-GBT-CORP (1-833-428-2677) or