Announcement PDF AUSTRALIS OIL & GAS LIMITED ABN 34 609 262 937 Level 1, 162 Grand Boulevard Joondalup WA 6027 • PO Box 8225 Subiaco East WA 6008 T +61 (8) 9220 8700 • F +61 (8) 9220 8799 www.australisoil.com ASX Listings Supervision Level 40, Central Park 152-158 St Georges Terrace PERTH WA 6000 By email: [email protected] 17 August 2026 ATS Response to ASX Price and Volume Query Australis Oil & Gas Ltd (“Australis” or “Company”) (ASX: ATS) refers to your letter dated 17 August 2026 (Query letter) and provides its response to the information request below. 1. Is ATS 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? Answer: No 2. If the answer to question 1 is “yes”. (a) Is ATS relying on Listing Rule 3.1A not to announce that information under Listing Rule 3.1? Please note that the recent trading in ATS’s securities would suggest to ASX that such information may have ceased to be confidential and therefore ATS 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 immediatelyto discuss the situation. (b) Can an announcementbe 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 announcementcannot be made immediately, why not and when is it expected that an announcement will be made? Answer: Not applicable 3. If the answer to question 1 is “no”, is there any other explanation that ATS may have for the recent trading in its securities? Australis believes that recent announcements may have generated interest in the company as we approach the restart of development activity in our key asset, the Tuscaloosa Marine Shale. Specifically, the following pertinent announcements have been made. • Australis announced a farmin deal on 26 November 2025 with Australis carried at a 20% working interest on a US$46.25 million work program, which was the successful execution of a long-term strategic objective. • On the 02 July 2026, Australis announced that the permit for the first carried well in the farmin program had been submitted to the Mississippi Oil and Gas Board (MSOGB). • On 29 July 2026, Australis announced in its quarterly report that subsequent to the end of the reporting period Australis had received confirmation from our Development Partner that they were proceeding with the first carried well and that there was a target date of Q4 2026, subject to rig availability. Australis also advised that the permit for the first well had been granted and the permit for the second carried well had been submitted to the MSOGB for approval at its next regular scheduled meeting. Australis will provide an update thereafter. 4. Please confirm that ATS is complying with the Listing Rules and, in particular, Listing Rule 3.1. Answer: Yes 5. Please confirm that ATS’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 ATS with delegated authority from the board to respond to ASX on disclosure matters. Answer: Yes Kind Regards Julie Foster Company Secretary ASX Limited [[Listings]] ASX Customer Service Centre 131 279 | asx.com.au #11126932v1 17 August 2026 Ms Julie Foster Company Secretary Australis Oil and Gas Limited By email: [email protected] Dear Ms Foster Australis Oil and Gas Limited (‘ATS’): Price and Volume Query ASX refers to the following: A. The change in the price of ATS’s securities from a low of $0.029 at open on 17/08/2026 to a high of $0.032 today at the time of writing. B. The significant increase in the volume of ATS’s securities traded from 14 August 2026 to 17 August 2026. Request for information In light of this, ASX asks ATS to respond separately to each of the following questions and requests for information: 1. Is ATS 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 ATS relying on Listing Rule 3.1A not to announce that information under Listing Rule 3.1? Please note that the recent trading in ATS’s securities would suggest to ASX that such information may have ceased to be confidential and therefore ATS 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 ATS may have for the recent trading in its securities? 4. Please confirm that ATS is complying with the Listing Rules and, in particular, Listing Rule 3.1. 5. Please confirm that ATS’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 ATS 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 11:45 AM AWST Monday, 17 August 2026. 2/3 ASX Customer Service Centre 131 279 | asx.com.au #11126932v1 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, ATS’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 and may require ATS to request a trading halt immediately. Your response should be sent by e-mail to [email protected]. It should not be sent directly to the ASX Market Announcements Office. This is to allow us 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 ATS’s securities under Listing Rule 17.1. If you wish to request 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 and Voluntary Suspensions. Suspension If you are unable to respond to this letter by the time specified above, ASX will likely suspend trading in ATS’s securities under Listing Rule 17.3.1. Listing Rules 3.1 and 3.1A In responding to this letter, you should have regard to ATS’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 ATS’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 ASX reserves the right to release all or any part of this letter, your reply and any other related correspondence between us to the market under Listing Rule 18.7A. The usual course is for correspondence to be released to the market. Kind regards ASX Supervision 3/3 ASX Customer Service Centre 131 279 | asx.com.au #11126932v1