Level 7, 151 Macquarie Street Sydney NSW 2000 Australia 11 July 2013 ASX Compliance Pty Ltd 20 Bridge Street SYDNEY NSW 2000 Dear Stephanie, Prima BioMed Limited ASX Price Query Response I refer to your letter dated 11 J

ASX Compliance Pty Ltd

Prima BioMed Limited ASX Price Query Response

I refer to your letter dated 11 July 2013 in relation to the ASX Price Query.

Limited (Prima BioMed) provides the following responses to the questions in your letter.

1. Question: Is the Entity aware of

any information concerning it that has not been released to the market which, if known by some in the market, could explain the recent trading in its securities?

Response: No; Prima BioMed is not aware of any such information.

Response: Not applicable.

3. Question: If the answer is no , is there any other explanation that the Entity may have for the recent trading in its securities?

Response: Prima BioMed does not have any other explanation for the recent trading in its securities.

4. Question: Please confirm that the Entity is in compliance with the Listing Rules and, in particular, Listing Rule 3.1.

Response: Prima BioMed is compliant with the Listing Rules including Listing Rule 3.1.

If you have any further questions, please do not hesitate to contact me.

General Counsel & Company

151 Macquarie Street

Prima BioMed Limited (the Entity ): ASX price query

We have noted a change in the price of the Entity s securities from a low of $0.071 on 4 July 2013 to a high of $0.11 at the time of writing today. We have also noted an increase in the volume

of trading in the Entity s securities over this period.

In light of the price change and increase in volume, ASX asks you to respond

separately to each of the following questions:

Please note that the recent trading in the Entity s securities would suggest to ASX that such information may have ceased to be

confidential and therefore the Entity may no longer be able to rely on Listing Rule 3.1A. Accordingly, if the answer to this question is yes , you need to contact us immediately to discuss the situation.

Please note, if the answer to this question is no , you need to contact us immediately to discuss requesting a trading halt (see below).

When and where to send your response

This request is made under, and in accordance with, Listing Rule 18.7. Your response is required as soon as reasonably possible and, in any event, by not later than 3.00 p.m. AEST today, 11 July

2013. If we do not have your response by then, ASX will have no choice but to consider suspending trading in the Entity s securities under Listing Rule 17.3.

You should note that if the information requested by this letter is information required to be given to ASX under Listing Rule 3.1 and it does not fall within the exceptions mentioned in Listing Rule

3.1A, the Entity s obligation is to disclose the information immediately . This may require the information to be disclosed before the deadline set out in the previous paragraph.

ASX reserves the right to release a copy of this letter and your response on the ASX Market Announcements Platform under Listing Rule 18.7A. Accordingly,

your response should be in a form suitable for release to the market.

Your response should be sent to me by a return e-mail or by facsimile

to 02 9241 7620. It should not be sent directly to the ASX Market Announcements Office. This is to allow me to review your response to confirm that it is in a form appropriate for release to the market, before it is published on the ASX

Market Announcements Platform.

Listing Rule 3.1 requires a listed entity to give ASX immediately any information concerning it that a reasonable person would expect to have a material effect on the price or value of the entity s

securities. Exceptions to this requirement are set out in Listing Rule 3.1A.

The obligation of the Entity to disclose information under

Listing Rules 3.1 and 3.1A is not confined to, nor is it necessarily satisfied by, answering the questions set out in this letter.

responding to this letter, you should have regard to the Entity s obligations under Listing Rules 3.1 and 3.1A and also to Guidance Note 8 Continuous Disclosure: Listing Rules 3.1 3.1B.

If you are unable to

respond to this letter by the time specified above, or if the answer to question 1 is yes and an announcement cannot be made immediately, you should discuss with us whether it is appropriate to request a trading halt in the Entity s

securities under Listing Rule 17.1.

If you wish a trading halt, you must tell us:

We may require the request for a trading halt to be in writing. The trading halt cannot extend past the commencement of normal trading on the second day

after the day on which it is granted.

You can find further information about trading halts in Guidance Note 16 Trading Halts &

Voluntary Suspensions.

If you have any queries or concerns about any of the above, please contact me immediately.

[Sent electronically

Senior Adviser, Listings Compliance (Sydney)