CASTLE MINERALS LIMITED — Regulatory Filings 2018

Feb 20, 2018

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21 February 2018

Mr Sebastian Bednarczyk Senior Adviser, Listings Compliance (Perth) ASX Compliance Pty Limited 152 St George’s Tce PERTH WA 6000

Dear Sir

RESPONSE TO ASX PRICE AND VOLUME QUERY

We refer to your letter dated 19 February 2018 and respond as follows.

1. Is CDT aware of any information concerning it that has not been announced to the market which, if known by some in the market, could explain the recent trading in its securities.

Response: Yes

1. If the answer to question 1 is “yes”:

2. a. Is CDT relying on Listing Rule 3.1A not to announce that information under listing rule 3.1

Response: Yes.

As described in CDT’s announcements of 7 November 2017, 20 December 2017 and its most recent quarterly activities report, CDT has been undertaking a detailed review and interpretation of recent mapping and historical drilling data in respect of its Beasley Creek Conglomerate-Hosted Gold Project. The information was considered by CDT to be confidential and was compiled in-house. An update announcement in respect of this information accompanies this response ( Announcement ).

CDT considers the information in respect of the Announcement has remained confidential.

CDT considers the likely reason for the uplift in CDT’s share price and volume is due to recent renewed market interest in Pilbara conglomerate-hosted gold mineralisation exploration, especially following the recent 14 and 15 February 2018 announcements of Novo Resources Corp (TXS.V:NVO) and Artemis Resources Ltd (ASX:ARV) regarding high grade gold sampling results on their Purdy’s Reward Conglomerate Gold Project.

• b. Can an announcement be made immediately?

Response: The information in respect of the Announcement is now approved and ready for release. Accordingly, the Announcement accompanies this response.

• c. N/A

Suite 2, 11 Ventnor Avenue, West Perth WA 6005 PH: +618 9322 7018 E: admin@castleminerals.com www.castleminerals.com ACN 116 095 802

1. Is there any other explanation that CDT may have for the recent trading in its securities?

Response: None, other than the 14 and 15 February 2018 announcements of NVO and ARV referred to in paragraph 2(a) above.

1. Please confirm CDT is in compliance with the Listing Rules and, in particular, Listing Rule 3.1.

Response: Confirmed

1. Please confirm that CDT’s responses to the questions above have been authorised and approved

Response: Confirmed

Yours sincerely

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Ian Hobson Company Secretary

19 February 2018

Ian Hobson Castle Minerals Limited Suite 5, 95 Hay Street SUBIACO WA 6008

By email

Dear Mr Hobson

CASTLE MINERALS LIMITED (“CDT”): ASX PRICE AND VOLUME QUERY

We note the change in the price of CDT’s securities from a closing price of $0.0022 on Friday, 16 February 2018, to an intra-day high at the time of writing of $0.003 today, Monday, 19 February 2018.

We also note an increase in the volume of CDT’s securities traded in the past few days.

In light of this, ASX asks CDT to answer separately each of the following questions and provide the following confirmations in a format suitable for release to the market in accordance with Listing Rule 18.7A:

1. Is CDT aware of any information concerning it that has not been announced to the market which, if known by some in the market, could explain the recent trading in its securities?

2. If the answer to question 1 is “yes”:

3. a) Is CDT relying on Listing Rule 3.1A not to announce that information under Listing Rule 3.1?

Please note that the recent trading in CDT’s securities would suggest to ASX that such information may have ceased to be confidential and therefore CDT 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.

• b) Can an announcement be made immediately?

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

• c) If an announcement cannot be made immediately, why not and when is it expected that an announcemant will be made?

• If the answer to question 1 is “no”, is there any other explanation that CDT may have for the recent trading in its securities?

• Please confirm that CDT is in compliance with the Listing Rules and, in particular, Listing Rule 3.1.

ASX Limited ABN 98 008 624 691

20 Bridge Street Sydney NSW 2000

www.asx.com.au Customer service 13 12 79

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1. Please confirm that CDT’s responses to the questions above have been authorised and approved in accordance with its published continuous disclosure policy or otherwise by its board or an officer of CDT with delegated authority from the board to respond to ASX on disclosure matters.

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 1.00 pm (WST) today, Monday, 19 February 2018 . If we do not have your response by then, ASX will have no choice but to consider suspending trading in CDT’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, CDT’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 e-mail at tradinghaltsperth@asx.com.au. 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 Rules 3.1 and 3.1A

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.

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

It should be noted that CDT’s obligation to disclose information under Listing Rule 3.1 is not confined to, nor is it necessarily satisfied by, answering the questions set out in this letter.

Trading halt

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 CDT’s securities under Listing Rule 17.1.

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

• 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; and

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

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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.

Yours sincerely

[Sent electronically without signature]

Sebastian Bednarczyk Senior Adviser, ASX Listings Compliance (Perth)

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