mark and Jason financial advisors

Contact Us

We are more than happy to answer your questions or to set up a free, no-obligation consultation with you. For additional information, please feel free to call us or e-mail us using the links below.

2342 Technology Drive,
Suite 300,
O’Fallon, Missouri 63368


903 S. Lindbergh
Suite 200,
Frontenac, Missouri 63131
Mark Riordan:
Jason Becker:
First name
Last Name




Do not send a request for trades or other transactions. Trades cannot be accepted electronically. Other inquiries that are time sensitive in nature should not be sent electronically. Please call your financial advisor directly to process trades and request items that are needed within 48 hours.

E-mail Note:
Do not disclose account numbers, passwords, or other sensitive information in any electronic messages. Information in your communication may be reviewed, monitored, or utilized by other Stifel associates for internal purposes, including supervision of the financial advisor you are contacting. Unless required by a court of law or regulatory authority, this information will not be given to external parties.

mark and jason

(636) 695-2650
(866) 950-5517 (toll-free)
(636) 695-3002
Mark Riordan:
Jason Becker:

We offer a free review of your portfolio, which will enable us to assist you in determining the appropriate investments for you. Everyone has a different comfort level, and your portfolio needs to be customized to help pursue your individual goals.

Click here to e-mail us for additional information.

Asset Allocation does not ensure a profit or protect against loss. Stifel does not provide tax or legal advice.  You should consult with your tax or legal advisor regarding your particular situation.

Services | Meet the Team | Contact Us | Becoming a Client | 13 Wealth Management Steps | 10 Steps to Help You Work Towards Your Financial | Corporate Site

Stifel, Nicolaus & Company, Incorporated Member SIPC & NYSE.

Investing involves risk, including the possible loss of principal invested.

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