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 Preliminary Proxy Statement 
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 Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) 
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 Definitive Proxy Statement 
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 Definitive Additional Materials 
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 Soliciting Materials Pursuant to §240.14a-12 
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 Payment of Filing Fee (Check the appropriate box): 
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 No fee required. 
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 Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11. 
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 Title of each class of securities to which transaction applies: 
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 Aggregate number of securities to which transaction applies: 
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 Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined): 
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 Proposed maximum aggregate value of transaction: 
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 Fee paid previously with preliminary materials. 
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 Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing. 
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 Form, Schedule or Registration Statement No.: 
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 Ambient Corporation 
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 CONTROL ID: 
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 IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS 
for the Annual Meeting of Stockholders 
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 DATE: 
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 June 7, 2012 
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 TIME: 
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 at 10:00 AM (local time) 
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 LOCATION: 
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 85 Wells Avenue, First Floor Auditorium, Newton, MA 02459 
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 HOW TO REQUEST PAPER COPIES OF OUR MATERIALS 
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 PHONE: 
Call toll free 
1-866-752-8683 
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 FAX: 
Send this card to 
202-521-3464 
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 INTERNET: 
https://www.iproxydirect.com/AMBT 
and follow the on-screen instructions. 
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 EMAIL: 
proxy@iproxydirect.com. 
Include your Control ID in your email. 
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 This communication represents a notice to access a more complete set of proxy materials available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The proxy statement and our annual report on form 10-K are available at: https://www.iproxydirect.com/AMBT 
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 If you want to receive a paper copy of the proxy materials you must request one. There is no charge to you for requesting a copy.  To facilitate timely delivery, please make the request, as instructed above, before May 24, 2012. 
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 you may enter your voting instructions at https://www.iproxydirect.com /AMBT 
until 11:59 pm eastern time June 6, 2012. 
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 The purposes of this meeting are as follows: 
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        1. Elect six directors of the Company to hold office until their respective successors shall have been duly elected and qualified; 
       2. Adopt the 2012 Stock Incentive Plan, including the performance-based award criteria; 
       3. Adopt the Management Incentive Bonus Plan to approve the performance-based award criteria; and 
       4. Transact such other business as may properly come before the Annual Meeting and any adjournment(s) thereof. 
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 The Board of Directors has fixed the close of business on APRIL 16, 2012 as the Record Date for determining the stockholders that are entitled to notice of and to vote at the 2012 annual meeting and any adjournments thereof. 
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 The Board of Directors recommends that you vote ‘for’ all proposals above. 
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 Please note – This is not a Proxy Card - you cannot vote by returning this card 
You May Obtain Directions to the Meeting By Calling Investor Relations at 617-614-6906. 
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 FIRST-CLASS MAIL 
US POSTAGE 
PAID 
CARY NC 
PERMIT # 869 
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