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Contacting Oberweis Securities, Inc.
Our staff is waiting to help you. Please write, call, or fax us.

Oberweis Securities, Inc.
3333 Warrenville Road, Suite 500
Lisle, IL 60532

Toll-free (800) 323-6166
Main (630) 577-2300
Fax (630) 245-0467

Email Us
Download Forms Click here to download forms
Customer Service Addresses:   
Oberweis Funds Email Funds
Oberweis Report Email Oberweis Report
Oberweis Securities Email Info
Comments & Suggestions Email Comments
Connectivity Problems/Issues Email Support

Sending Checks

Make Checks payable to our clearing broker:

   NFS (National Financial Services LLC)
Please write your account number in the memo field

Mail checks to:

   Oberweis Securities, Inc.
3333 Warrenville Road, Suite 500
Lisle, IL 60532
USA

Wiring Instructions
Wire to: JP Morgan Chase Bank
One Chase Manhattan Plaza
New York, NY, 10005
ABA Number: 021000021
For Credit to: National Financial Services, LLC
1 World Financial Center
200 Liberty Street
New York, NY, 10281
  Account Number: 066196-221
For the benefit of: Your Name
  Your Account Number
  (xxx-######)
Important - Customers wiring funds into a Retirement Account must also include the applicable contribution (mnemonic) code to ensure that the wire is correctly credited for tax reporting purposes. Please include: CYC (current year) or PYC (prior year] for IRA accounts or SEP (for SEP/IRA’s)
*Non-reportable custodian-to-custodian transfers will require prior additional documentation or funds will be returned.