GREAT BOULDER RESOURCES LIMITED — Regulatory Filings 2021

Sep 27, 2021

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28 September 2021

Ms Nicola Mullen Adviser, ASX Listings Compliance (Perth)

By email: ListingsCompliancePerth@asx.com.au

Dear Nicola,

RESPONSE TO PRICE AND VOLUME QUERY

GREAT BOULDER RESOURCES LTD (‘the Company’) (ASX:GBR)

We refer to your letter dated 24 September 2021 with respect to the subject matter and respond to your queries in the same order as raised:

1. No. While the Company was already in the process of collating RC and air core assays for the market update released today it does not believe the grades and scale of these results are sufficiently material to explain Friday’s trading volumes. There is no other material information known to the Company that has not been released to the market.

2. Not applicable.

3. The Company refers to its announcement “ 150g/t gold intersection at Mulga Bill ” dated 2 September 2021 which notes the Company is expecting updates from recent air core, RC and diamond drilling at the Mulga Bill prospect within the Side Well gold project near Meekatharra. Given the tenor of extremely high-grade RC results announced to the market on 2 September 2021 there has been a significant level of excitement and anticipation of the further results of that drill program.

4. The Company is and remains in compliance with the Listing Rules and, in particular, Listing Rule 3.1.

5. The above has been authorised and approved in accordance with the Company’s published Continuous Disclosure Policy or otherwise by its Board or an officer of the Company with delegated authority from the Board to respond to ASX on disclosure matters.

Yours faithfully,

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Melanie Ross Company Secretary Great Boulder Resources Limited

E: admin@greatboulder.com.au GREATBOULDER.COM.AU ABN 70 611 695 955

ASX Code: GBR Contact: Andrew Paterson, Managing Director P: +61 8 9321 6037 Level 1, 51 Colin St West Perth WA 6005

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24 September 2021

Reference: 40093

Ms Melanie Ross Company Secretary Great Boulder Resources Limited

By Email: MRoss@consiliumcorp.com.au

Dear Ms Ross

Great Boulder Resources Limited (‘GBR’): Price - Query

ASX refers to the following:

• A. The change in the price of GBR’s securities from $0.15 at the commencement of trading to an intraday high of $0.235 today, Friday 24 September 2021.

Request for information

In light of this, ASX asks GBR to respond separately to each of the following questions and requests for information:

1. Is GBR 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”.

   • (a) Is GBR relying on Listing Rule 3.1A not to announce that information under Listing Rule 3.1? Please note that the recent trading in GBR’s securities would suggest to ASX that such information may have ceased to be confidential and therefore GBR 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 announcement will be made?

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

4. Please confirm that GBR is complying with the Listing Rules and, in particular, Listing Rule 3.1.

5. Please confirm that GBR’s responses to the questions above have been authorised and approved under its published continuous disclosure policy or otherwise by its board or an officer of GBR 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 Listing Rule 18.7. Your response is required as soon as reasonably possible and, in any event, by no later than 3:00 PMAWST Friday, 24 September 2021 . 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, GBR’s obligation is to disclose the information

ASX Customer Service Centre 131 279 | asx.com.au

ASX Limited [[Listings]]

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‘immediately’. This may require the information to be disclosed before the deadline set out in the previous paragraph and may require GBR to request a trading halt immediately.

Your response should be sent to me by e-mail at ListingsCompliancePerth@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.

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 GBR’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.

We 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 .

Suspension

If you are unable to respond to this letter by the time specified above, ASX will likely suspend trading in GBR’s securities under Listing Rule 17.3.

Listing Rules 3.1 and 3.1A

In responding to this letter, you should have regard to GBR’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 GBR’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.

Release of correspondence between ASX and entity

We reserve the right to release a copy of this letter, your reply and any other related correspondence between us to the market under Listing Rule 18.7A.

Questions

If you have any questions in relation to the above, please do not hesitate to contact me.

Yours sincerely

Nicola Mullen

Adviser, Listings Compliance (Perth)

2/2 ASX Customer Service Centre 131 279 | asx.com.au