Announcement PDF welcome to brighter A business of Marsh McLennan Form 604 Corporations Act 2001 Section 671B Notice of change of interests of substantial holder To Company Name/Scheme Microba Life Sciences Ltd (MAP) ABN/ARSN ABN 82 617 096 652 1. Details of substantial holder (1) Name Mercer Investments (Australia) Limited as RE of Mercer Australian Small Companies Fund ACN/ARSN (if applicable) Mercer Investments (Australia) Limited (ABN 66 008 612 397) Mercer Australian Small Companies Fund (ARSN 111 237 873) There was a change in interests of the substantial holder on 07/11/2025 The previous notice was given to the company on 31/10/2025 The previous notice date 31/10/2025 2. Previous and present voting power The total number of votes attached to all the voting shares or interests in the company, scheme or fund that the substantial holder or an associate (2) had a relevant interest (3) in when last required, and when now required, to give a substantial holding notice to the company, scheme or fund, are as follows: Class of securities (4) Previous Notice Present notice Person’s votes Voting Power (5) Person’s votes Voting Power (5) Ordinary Fully Paid Shares 32,311,091 5.31% 38,773,209 6.37% 3. Changes in relevant interests Particulars of each change in, or change in the nature of, a relevant interest of the substantial holder or an associate in voting securities of the company, scheme or fund, since the substantial holder was last required to give a substantial holding notice to the company, scheme or fund are as follows: Date of Change Person whose relevant interest changed Nature of change (6) Consideration given in relation to change (7) Class and number of securities affected Person’s votes affected 07/11/2025 Mercer Investments (Australia) Limited as RE of Mercer Australian Small Companies Fund Purchase of 6,462,118 shares on 7 November 2025 (at 0.0722 per share and settled on 11 November 2025) $ 466,564.92 Refer to Annexure A – Table 3 Refer to Annexure A – Table 3 4. Present relevant interests Particulars of each relevant interest of the substantial holder in voting securities after the change are as follows: Holder of relevant interest Registered holder of securities Person entitled to be registered as holder (8) Nature of relevant interest (6) Class and number of securities Person’s votes See Annexure A, Table 2 5. Changes in association The persons who have become associates (2) of, ceased to be associates of, or have changed the nature of their association (9) with, the substantial holder in relation to voting securities in the company, scheme or fund are as follows: Name and ACN/ARSN (if applicable) Nature of association See Annexure A, Table 1 & Table 2 Company 6. Addresses The addresses of persons named in this form are as follows: Name Address Mercer Investments (Australia) Limited as RE of Mercer Australian Small Companies Fund Level 15, Collins Square, 727 Collins Street, Melbourne VIC 3008, Australia Signature Print name: Simon Eagleton Capacity: Director, Mercer Investments (Australia) Limited Sign here: Date: 12/11/2025 welcome to brighter A business of Marsh McLennan Annexure A - Table 1 Related Companies of Mercer Investments (Australia) Limited Mercer Superannuation (Australia) Limited Mercer Investments (Australia) Limited Mercer (Australia) Pty Ltd Mercer Consulting (Australia) Proprietary Limited Mercer Financial Advice Proprietary Limited Mercer Outsourcing (Australia) Proprietary Limited Mercer Australia Superannuation Administration Proprietary Limited Mercer Investments (Australia) Limited acts as RE or Trustee for these funds Advance Australian Fixed Interest Multi-Blend Fund Managed Portfolio Series International Shares Fund 3 Advance Australian Shares Multi-Blend Fund Managed Portfolio Series International Shares Fund 4 Advance Balanced Multi-Blend Fund Managed Portfolio Series International Shares Fund 5 Advance Cash Multi-Blend Fund Mercer Australian Direct Property Fund Advance Defensive Multi-Blend Fund Mercer Australian Inflation Plus Fund Advance Defensive Yield Multi-Blend Fund Mercer Australian Shares Fund Advance Growth Multi-Blend Fund Mercer Australian Shares Fund for Tax Exempt Investors Advance High Growth Multi-Blend Fund Mercer Australian Shares Plus Fund Advance International Fixed Interest Multi-Blend Fund Mercer Australian Small Companies Fund Advance International Shares Multi-Blend Fund Mercer Australian Sovereign Bond Fund Advance Moderate Multi-Blend Fund Mercer Cash Fund Advance Property Securities Multi-Blend Fund Mercer Conservative Growth Fund Managed Portfolio Series Alternatives Fund 1 Mercer Emerging Markets Debt Fund Managed Portfolio Series Australian Fixed Interest Fund 1 Mercer Emerging Markets Shares Fund Managed Portfolio Series Australian Fixed Interest Fund 2 Mercer Global Credit Fund Managed Portfolio Series Australian Fixed Interest Fund 3 Mercer Global Unlisted Property Fund (MST) Managed Portfolio Series Australian Shares Fund 1 Mercer Global Listed Property Fund Managed Portfolio Series Australian Shares Fund 2 Mercer Global Small Companies Shares Fund Managed Portfolio Series Australian Shares Fund 3 Mercer Global Sovereign Bond Fund Managed Portfolio Series Australian Shares Fund 4 Mercer Global Unlisted Infrastructure Fund Managed Portfolio Series International Fixed Interest Fund 1 Mercer Growth Fund Managed Portfolio Series International Fixed Interest Fund 3 Mercer Hedged International Shares Fund Managed Portfolio Series International Property Securities Fund 1 Mercer High Growth Fund Managed Portfolio Series International Shares Fund 2 Mercer Indexed Australian Fixed Interest Fund Mercer Investments (Australia) Limited acts as RE or Trustee for these funds Mercer Indexed Australian Listed Property Fund Mercer Investment Funds Australian Shares Plus Trust Mercer Indexed Australian Shares Fund Mercer Passive Global Technology Shares Fund Mercer Indexed Balanced Fund Advance Global Unlisted Property Fund Mercer Indexed Defensive Fund WSSP Australian Equities Trust Mercer Indexed Growth Fund WSSP International Equities Trust Mercer Indexed High Growth Fund WSSP International Property (Global REITS) Trust Mercer Indexed International Fixed Interest Fund Advance Diversified Alternatives Fund Mercer Indexed International Shares Fund Advance Private Debt Fund Mercer Indexed Moderate Fund Advance Unlisted Infrastructure Fund Mercer International Shares Fund Mercer Tailored #1 Trust Mercer Moderate Growth Fund TAL 2 Trust Mercer Multi-manager Balanced Fund Mercer Global Private Debt Fund Mercer Multi-manager Conservative Fund Mercer Global Absolute Return Bond Fund Mercer Multi-manager Growth Fund Mercer Global High Yield Bond Fund Mercer Multi-manager High Growth Fund Mercer Global Enhanced Low Volatility Shares Fund Mercer Multi-manager International Share Fund Mercer Conservative Growth Overlay Fund Mercer Passive Australian Listed Property Fund Mercer Moderate Growth Overlay Fund Mercer Passive Australian Shares Fund Mercer Growth Overlay Fund Mercer Passive Emerging Markets Shares Fund Mercer High Growth Overlay Fund Mercer Passive Global Listed Infrastructure Fund Mercer Diversified Growth Mercer Passive Global Listed Property Fund Mercer CFS Property Fund Mercer Passive Hedged International Shares Fund AP#2 Trust Mercer Passive International Shares Fund Mercer Short Term Bond Fund Mercer Sustainable Plus Australian Shares Fund Mercer Passive Sustainable International Shares Fund Mercer Sustainable Plus International Shares Fund SP International Shares Trust Mercer DG (EX P) Trust TSA Equity Fund #1 Mercer OSS Trust TSA Equity Fund #2 OSSH#1 Trust Mercer Sustainable Plus Global Credit Fund Mercer Investment Funds Overseas Shares Trust Sustainable GS#1 Trust AP#1 Trust Mercer Global Unlisted Property Fund This is Annexure A of six pages referred to in Form 604 'Notice of change of interests of substantial holder' Signature Date: 12/11/2025 Name: Simon Eagleton Capacity: Director, Mercer Investments (Australia) Limited welcome to brighter A business of Marsh McLennan Annexure A - Table 2 Fund details: No. Fund Name Registered Holder Registered Address Persons entitled to be registered holder 1 Mercer Australian Small Companies Fund HSBC Custody Nominees (Australia) Limited as a Sub Custodian of Mercer Australian Small Companies Fund GPO BOX 5302 SYDNEY NSW 2001 MERCER INVESTMENTS (AUSTRALIA) LIMITED as RE of Mercer Australian Small Companies Fund welcome to brighter A business of Marsh McLennan Annexure A - Table 3 Present relevant interest Mercer Investments (Australia) Limited (ABN 66 008 612 397) and Mercer Australian Small Companies Fund (ARSN 111 237 873) As at 7th November 2025 Mercer Investments (Australia) Limited's holdings 38,773,209 Total Shares on Issue – MICROBA LIFE SCIENCES LTD- MAP 608,963,034 6.37% welcome to brighter A business of Marsh McLennan Annexure A - Table 4 The changes in relevant interest, including the consideration paid and received, since the previous notice date are as follows: Fund name Entity Name Trade Date No of Securities Value per share Consideration ISIN Action Mercer Australian Small Companies Fund Mercer Investments (Australia) Limited 7/11/2025 6,462,118 0.0722 $ 466,564.92 AU0000209868 Purchases