INTEGRAL DIAGNOSTICS LIMITED — Major Shareholding Notification 2026

May 3, 2026

603 Page 1 of 3 15 July 2001

Form 603
Corporations Act 2001
Section 671B
Notice of initial substantial holder

To Company Name/Scheme
INTEGRAL DIAGNOSTICS LIMITED

ACN/ARSN
130 832 816

1. Details of substantial holder (1)
   Name
   Australian Retirement Trust Pty LTD ATF Australian Retirement Trust

ACN/ARSN (if applicable)
010 720 840

The holder became a substantial holder on
30/04/2026

1. Details of voting power

The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate (2) had a relevant interest (3) in on the date the substantial holder became a substantial holder are as follows:

Class of securities (4)	Number of securities	Person's votes (5)	Voting power (6)
Fully paid ordinary shares	18,711,416	18,711,416	5.016%

1. Details of relevant interests

The nature of the relevant interest the substantial holder or an associate had in the following voting securities on the date the substantial holder became a substantial holder are as follows:

Holder of relevant interest	Nature of relevant interest (7)	Class and number of securities
Australian Retirement Trust Pty LTD ATF Australian Retirement Trust	Power to exercise voting rights pursuant to position held as trustee of a superannuation fund.	Fully paid ordinary shares 18,711,416

1. Details of present registered holders

The persons registered as holders of the securities referred to in paragraph 3 above are as follows:

Holder of relevant interest	Registered holder of securities	Person entitled to be registered as holder (8)	Class and number of securities
Australian Retirement Trust Pty LTD ATF Australian Retirement Trust	HSBC Custody Nominees (Australia)Limited		Fully paid ordinary shares 18,711,416

1. Consideration

The consideration paid for each relevant interest referred to in paragraph 3 above, and acquired in the four months prior to the day that the substantial holder became a substantial holder is as follows:

Holder of relevant interest	Date of acquisition	Consideration (9)		Class and number of securities
		Cash	Non-cash
Refer to Annexure A

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603 Page 2 of 3 15 July 2001

6. Associates

The reasons the persons named in paragraph 3 above are associates of the substantial holder are as follows:

Name and ACN/ARSN (if applicable)	Nature of association

7. Addresses

The addresses of persons named in this form are as follows:

Name	Address
Australian Retirement Trust Pty LTD ATF Australian Retirement Trust	266 George Street, Brisbane City QLD 4000

Signature

print name

Kristy Huxtable

capacity

Company Secretary

sign here

date

04/05/2026

DIRECTIONS

(1) If there are a number of substantial holders with similar or related relevant interests (eg. a corporation and its related corporations, or the manager and trustee of an equity trust), the names could be included in an annexure to the form. If the relevant interests of a group of persons are essentially similar, they may be referred to throughout the form as a specifically named group if the membership of each group, with the names and addresses of members is clearly set out in paragraph 7 of the form.

(2) See the definition of "associate" in section 9 of the Corporations Act 2001.

(3) See the definition of "relevant interest" in sections 608 and 671B(7) of the Corporations Act 2001.

(4) The voting shares of a company constitute one class unless divided into separate classes.

(5) The total number of votes attached to all the voting shares in the company or voting interests in the scheme (if any) that the person or an associate has a relevant interest in.

(6) The person's votes divided by the total votes in the body corporate or scheme multiplied by 100.

(7) Include details of:

(a) any relevant agreement or other circumstances by which the relevant interest was acquired. If subsection 671B(4) applies, a copy of any document setting out the terms of any relevant agreement, and a statement by the person giving full and accurate details of any contract, scheme or arrangement, must accompany this form, together with a written statement certifying this contract, scheme or arrangement; and

(b) any qualification of the power of a person to exercise, control the exercise of, or influence the exercise of, the voting powers or disposal of the securities to which the relevant interest relates (indicating clearly the particular securities to which the qualification applies).

See the definition of "relevant agreement" in section 9 of the Corporations Act 2001.

(8) If the substantial holder is unable to determine the identity of the person (eg. if the relevant interest arises because of an option) write "unknown".

(9) Details of the consideration must include any and all benefits, money and other, that any person from whom a relevant interest was acquired has, or may, become entitled to receive in relation to that acquisition. Details must be included even if the benefit is conditional on the happening or not of a contingency. Details must be included of any benefit paid on behalf of the substantial holder or its associate in

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603 Page 3 of 3 15 July 2001

relation to the acquisitions, even if they are not paid directly to the person from whom the relevant interest was acquired.

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Page 1 of 1

Annexure A

Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust ACN 010 720 840

This is Annexure A of 1 page referred to in Form 603, Notice of initial substantial holder

Kristy Huxtable
Company Secretary

Date: 4/05/2026

Holder of Relevant Interest	Purchase/Sale	Trade Date	Consideration (Cash)	Consideration (Non-Cash)	Number of Securities
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	SELL	2/01/2026	40,124.44		16,365
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	2/01/2026	157,545.06		64,164
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	5/01/2026	227,939.75		89,748
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	8/01/2026	608,751.58		241,258
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	9/01/2026	265,953.92		105,877
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	12/01/2026	100,275.89		39,406
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	13/01/2026	292,173.55		114,885
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	14/01/2026	158,230.24		60,961
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	15/01/2026	166,023.82		63,195
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	16/01/2026	398,109.94		148,694
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	19/01/2026	969,095.52		366,943
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	21/01/2026	336,416.20		128,859
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	SELL	29/01/2026	285,931.55		109,046
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	6/02/2026	59,029.92		22,958
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	13/02/2026	218,238.67		86,088
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	SELL	20/02/2026	105,906.65		43,600
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	SELL	23/02/2026	71,327.71		29,575
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	SELL	24/02/2026	73,647.99		30,862
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	SELL	12/03/2026	317,040.00		134,186
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	19/03/2026	313,771.57		134,186
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	24/03/2026	1,427,457.01		579,228
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	25/03/2026	772,650.40		319,859
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	2/04/2026	887.92		373
Australian Retirement Trust Pty Ltd ATF Australian Retirement Trust	BUY	30/04/2026	2,139,200.56		976,890