PHARMX TECHNOLOGIES LIMITED — Regulatory Filings 2012

May 27, 2012

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28 May 2012

Stephanie So Adviser, Listings (Sydney) ASX Compliance Pty Limited 20 Bridge St SYDNEY NSW 2000

By Email

Dear Stephanie,

Re Price Query – Corum Group Limited

Responding to the Price Query correspondence received this morning the Company offers the following statements:

• Corum is not aware of any information concerning it that has not been announced to the market.

• Corum continues to experience substantial increases in profitability; as disclosed in the half year report for the six months ended 31 December 2011 and the recently announced quarterly cash flow report for the 9 months ended 31 March 2012 which disclosed year to date operating cash flows of $2.850 million which included $1.874 million of non recurring items. Also during this period Corum became debt free and its assets are now totally unencumbered.

• Corum continues to comply with Listing Rule 3.1 in that Directors are not aware of any information, other than that announced this year, which one would expect to have a material effect on the price of the Company’s securities.

Sincerely

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Geoffrey Broomhead Managing Director

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28 May 2012

Geoffrey Broomhead Corum Group Limited Level 17 24 Campbell Street Sydney NSW 2000

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ASX Compliance Pty Limited ABN 26 087 780 489 20 Bridge Street Sydney NSW 2000 PO Box H224 Australia Square NSW 1215

Telephone 61 2 9227 0125 Facsimile 61 2 9241 7620 www.asx.com.au

By Email

Dear Geoffrey,

CORUM GROUP LIMITED (the “Company”)

RE: PRICE QUERY

We have noted a change in the price of the Company’s securities from a close of $0.077 on Friday, 18 May 2012 to an intra-day high of $0.115 at the time of writing today. We have also noted an increase in the volume of trading in the securities over this period.

In light of the price change and increase in volume, please respond to each of the following questions.

1. Is the Company aware of any information concerning it that has not been announced which, if known, could be an explanation for recent trading in the securities of the Company?

Please note that as recent trading in the Company’s securities could indicate that information has ceased to be confidential, the Company is unable to rely on the exceptions to listing rule 3.1 contained in listing rule 3.1A when answering this question.

1. If the answer to question 1 is yes, can an announcement be made immediately? If not, why not and when is it expected that an announcement will be made?

Please note, if the answer to question 1 is yes and an announcement cannot be made immediately, you need to contact us to discuss this and you need to consider a trading halt (see below).

1. Is there any other explanation that the Company may have for the price change and increase in volume in the securities of the Company?

2. Please confirm that the Company is in compliance with the listing rules and, in particular, listing rule 3.1.

Your response should be sent to me by e-mail at stephanie.so@asx.com.au or by facsimile on facsimile number (02) 9241 7620 . It should not be sent to the Company Announcements Office.

Unless the information is required immediately under listing rule 3.1, a response is requested as soon as possible and, in any event, not later than 2.00 p.m A.E.S.T, Monday, 28 May 2012 .

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Under listing rule 18.7A, a copy of this query and your response will be released to the market, so your response should be in a suitable form and separately address each of the questions asked. If you have any queries or concerns, please contact me immediately.

Listing rule 3.1

Listing rule 3.1 requires an 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. The exceptions to this requirement are set out in listing rule 3.1A.

In responding to this letter you should consult listing rule 3.1 and Guidance Note 8 – Continuous Disclosure: listing rule 3.1.

If the information requested by this letter is information required to be given to ASX under listing rule 3.1 your obligation is to disclose the information immediately.

Your responsibility under listing rule 3.1 is not confined to, or necessarily satisfied by, answering the questions set out in this letter.

Trading halt

If you are unable to respond by the time requested, or if the answer to question 1 is yes and an announcement cannot be made immediately, you should consider a request for a trading halt in the Company’s securities. As set out in listing rule 17.1 and Guidance Note 16 – Trading Halts, we may grant a trading halt at your request. We may require the request to be in writing. We are not required to act on your request. You must tell us each of the following.

• The reasons for the trading halt.

• How long you want the trading halt to last.

• The event you expect to happen that will end the trading halt.

• That you are not aware of any reason why the trading halt should not be granted.

• Any other information necessary to inform the market about the trading halt, or that we ask for.

The trading halt cannot extend past the commencement of normal trading on the second day after the day on which it is granted. If a trading halt is requested and granted and you are still unable to reply to this letter before the commencement of trading, suspension from quotation would normally be imposed by us from the commencement of trading if not previously requested by you. The same applies if you have requested a trading halt because you are unable to release information to the market, and are still unable to do so before the commencement of trading.

If you have any queries regarding any of the above, please let me know.

Yours sincerely,

[Sent electronically without signature]

Stephanie So Adviser, Listings (Sydney)