Where is Rubius Therapeutics’ corporate headquarters?
325 Vassar Street, Suite 1A
Cambridge, MA 02139
Where is the company incorporated?
Rubius Therapeutics is incorporated in the state of Delaware.
When did Rubius Therapeutics go public? What was the price?
Rubius Therapeutics’ initial public offering (IPO) took place on July 18, 2018. The initial share price was [insert share price].
What is Rubius Therapeutics’ fiscal year?
Rubius Therapeutics’ fiscal year-end is December 31st.
How is Rubius Therapeutics’ stock traded?
Rubius Therapeutics Inc. is traded on the NASDAQ Global Market under the ticker symbol RUBY and its CUSIP number is 78116T 103.
Does Rubius Therapeutics’ pay dividends?
Rubius Therapeutics does not pay dividends.
Who is Rubius Therapeutics’ transfer agent?
The American Stock Transfer & Trust Co. is the transfer agent for Rubius Therapeutics.

The American Stock Transfer & Trust Co
6201 15th Avenue, Brooklyn, NY 11219
Whom do I contact with questions about my stock? How do I transfer stock, change the address on my shareholder account, or replace a lost stock certificate?
Please contact American Stock Transfer & Trust Co. Customer Service. Representatives are available weekdays from 9:00 a.m. to 6:00 p.m., Eastern Time. AST Representatives can provide you with information about your account, to change your address and can also provide detailed instructions about how to transfer ownership.

Does Rubius Therapeutics have a direct stock purchase plan?
Rubius Therapeutics does not have a direct stock purchase plan. Shares can be purchased through a stockbroker of your choice.
Who is Rubius Therapeutics’ auditor?
Rubius Therapeutics’ auditor is PricewaterhouseCoopers LLP in Boston, MA..
Who is Rubius Therapeutics’ legal counsel?
Rubius Therapeutics’ legal counsel is Goodwin Procter LLP in Boston, MA.
Where can I find out more about Rubius Therapeutics? Where can I get the latest corporate news releases and financial reports?
Rubius Therapeutics’ press releases can be accessed here, and financial reports can be accessed here.
How can I view documents Rubius Therapeutics has filed with the Securities & Exchange Commission (SEC), including Forms 10-K and 10-Q?
Rubius Therapeutics SEC filings can be accessed here.
Whom should I contact regarding investor inquiries?
Investor inquiries may be submitted to ir@rubiustx.com.