BIOTRON LIMITED — Capital/Financing Update 2024

Oct 23, 2024

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Level 2, 66 Hunter Street Sydney NSW 2000 Tel: (61-2) 9300 3344 Fax: (61-2) 9221 6333 E-mail: pnightingale@biotron.com.au Website: www.biotron.com.au

24 October 2024

The Manager Companies ASX Limited 20 Bridge Street SYDNEY NSW 2000

(4 pages by email)

Dear Madam,

Option Expiry Notice

The Company advises that the attached Option Expiry Notice has been sent to holders of Biotron Limited listed options (ASX: BITOB) in relation to the expiry of the options on 25 November 2024.

Yours sincerely

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Peter J. Nightingale Company Secretary pjn12345

Level 2, 66 Hunter Street Sydney NSW 2000 Tel: (61-2) 9300 3344 Fax: (61-2) 9221 6333

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E-mail: pnightingale@biotron.com.au Website: www.biotron.com.au

MR SAM SAMPLE FLAT 123 123 SAMPLE STREET THE SAMPLE HILL SAMPLE ESTATE SAMPLEVILLE VIC 3030

24 October 2024

Dear Optionholder

IMPORTANT OPTION EXPIRY NOTICE

Your Options to Acquire Biotron Limited Shares at $0.06 per Share Expire on 25 November 2024

We are writing to you as a registered holder of options, each to acquire one fully paid ordinary share in Biotron Limited at $0.06 ('Options'), to advise you that your Options will lapse at 5:00pm (Sydney time) on Monday, 25 November 2024.

Your Options may be exercised in whole or in part by the payment of $0.06 for each Option by no later than 5.00pm (Sydney time) on Monday, 25 November 2024. There is no obligation for holders of Options to exercise their Options, however, if payment is not received by 5.00pm (Sydney time) on 25 November 2024, your Options will lapse and all rights under the Options will cease.

To assist you, we attach a Notice of Exercise of Options which is personalised for your Option holding and which provides details of how you can exercise your Options.

Other Information

The following information is provided in accordance with Australian Securities Exchange (‘ASX’) Listing Rules:

1. The name of the Optionholder and the number of Options held are detailed on the attached Notice of Exercise of Options.

2. Each Option is exercisable to acquire one fully paid ordinary share in Biotron Limited at $0.06.

3. Due date for payment to exercise the Options is 5:00pm (Sydney time) on Monday 25 November 2024.

4. If you do not elect to exercise your Options by 25 November 2024, your Options will lapse and all rights under the Options will cease.

5. Quotation by the ASX of the Options will cease on Tuesday 19 November 2024, being 4 business days before 25 November 2024.

6. The last market sale price on 16 October 2024 of the Company's fully paid ordinary shares, into which the Options are exercisable, was $0.022.

7. During the 3 months preceding the date of this notice, the highest and lowest market sale price of the Company's fully paid ordinary shares was $0.034 on 19 July 2024 and $0.016 on 10 September 2024 respectively.

If you wish to exercise your options then you must complete the instructions set out on the “Notice of Exercise of Options” form on the reverse of this notice. A payment of $0.06 per option exercised must be received no later than 5:00pm (Sydney time) on Monday, 25 November 2024.

Yours sincerely

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Peter J. Nightingale Company Secretary

Samples/000001/000001

Biotron Limited Sample House Level 4 123 Sample Street Sampletown VIC 3000

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Tel: +61 (0) 3 0000 0000 Fax: +61 (0) 3 0000 0000

MR SAM SAMPLE FLAT 123 123 SAMPLE STREET THE SAMPLE HILL SAMPLE ESTATE SAMPLEVILLE VIC 3030 Use a black pen. Where a choice is required, Print in CAPITAL letters A B C 1 2 3 mark the box with an ‘X’ X inside the grey areas.

Exercise of Options Notice

Options exercisable at $0.06 per Option expiring on 5 pm AEDT on 25 November 2024

These Options are exercisable wholly or in part by the payment of the price above for each Option exercised. Payment has to be received at either of the addresses overleaf, by the time and date stated above. For every one Option exercised, the Optionholder will be allotted 1 Fully Paid Ordinary Share in the capital of Biotron Limited.

To be completed by the Optionholder

I/We enclose my/our payment for the amount shown above.

To the Directors Biotron Limited.

I/We the abovementioned being the registered holder(s) of the Options, hereby exercise my/our option for Ordinary Fully Paid Shares in Biotron Limited and I/we request you allot to me/us and I/we agree to be bound by the Constitution of the Company.

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----- Start of picture text ----- Number of Options to be exercised Amount enclosed at A$0.06 per OptionCheque details - Make your cheque or bank draft payable to Biotron LimitedSign Here - This section must be signed for your instructions to be executedIndividual or Optionholder 1 Optionholder 2 Optionholder 3Sole Director and Sole Company Secretary Director/Company Secretary Director----- End of picture text -----

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The directors reserve the right to make amendments to this form where appropriate. Refer to lodgement instructions overleaf.

This form may not be used to effect a change of address. Please contact Computershare Investor Services Pty Limited on 1300 787 272, or online via the Investor Centre found at www.investorcentre.com/au

See back of form for completion guidelines

Samples/000001/000002/i12

How to complete this form

Exercise your Options in full or part

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Registration Name(s)

The fully paid ordinary shares will be registered in the name(s) printed on the form.

Options Exercised

Enter the number of Options you wish to exercise.

Exercise Moneys

Enter the amount of exercise moneys. To calculate the amount payable, multiply the number of Options exercised by the exercise price.

Payment

Make your cheque or bank draft payable to Biotron Limited in Australian currency and cross it Not Negotiable. Your cheque or bank draft must be drawn on an Australian Bank. Complete the cheque details in the boxes provided. The total amount must agree with the amount shown in box B. Sufficient cleared funds must be held in your account as cheques returned unpaid may not be re-presented and may result in your Exercise of Options Notice being rejected. Pin (do not staple) your cheque(s) to the Exercise of Options Notice. Cash will not be accepted. Receipt for payment will not be forwarded.

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Signature(s)

You must sign the form as follows in the space provided: Individual: where the holding is in one name, the Optionholder must sign. Joint holding: the holding is in more than one name all of the Optionholders must sign.

Power of Attorney: to sign under Power of Attorney, you must have already lodged this document with the registry. Alternatively, attach an originally certified copy of the Power of Attorney to this form when you return it. Companies: this form must be signed by either 2 Directors or a Director and a Company Secretary. Alternatively, where the company has a Sole Director and, pursuant to the Corporations Act, there is no Company Secretary, or where the Sole Director is also the Sole Company Secretary, that Director may sign alone. Delete titles as applicable.

Deceased Estate: all executors must sign and, if not already noted by the registry, a certified copy of Probate or Letters of Administration must accompany this form.

If you are in any doubt as to how to deal with this document, please consult your Financial or other Personal Advisor.

If you have any enquiries concerning your Optionholding, please contact Computershare Investor Services Pty Limited on on 1300 855 080.

Lodgement of Notice

The Exercise of Options Notice must be received at the address below by no later than 5pm AEDT on 25 November 2024.

Return the Exercise of Options Notice with cheque(s) attached to:

Biotron Limited Level 2 66 Hunter Street SYDNEY NSW 2000

or

Electronic transfer of funds to: Bank: Westpac Banking Corporation Account Name: Biotron Limited BSB: 032 044 Account Number: 194296 Payment receipt and duly completed option exercise form must be emailed to the Company Secretary at pnightingale@biotron.com.au < mailto:pnightingale@biotron.com.au>

Neither Computershare Investor Services Pty Limited nor Biotron Limited accepts any responsibility if this Options Notice is lodge at any other address or by any other means.