CALIX LIMITED — Major Shareholding Notification 2022

May 23, 2022

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----- Start of picture text ----- Form 605Corporations Act 2001Section 671BNotice of ceasing to be a substantial holderTo Company Name/Scheme Calix Ltd (CXL)ACN/ARSN 117 372 5401. Details of substantial holder (1)Name Regal Funds Management Pty Ltd (RFM)ACN/ARSN (if applicable) 107 576 821The holder ceased to be a substantial holder on20/05/2022The previous notice was given to the company on 13/05/2022The previous notice was dated 11/05/20222. Changes in relevant interestsParticulars of each change in, or change in the nature of, a relevant interest (2) of the substantial holder or an associate (3) in voting securities ofthe company or scheme, since the substantial holder was last required to give a substantial holding notice to the company or scheme are as follows:Date of Person whose relevant Nature of change Consideration given in relation to Class (6) and number of Person's voteschange interest changed (4) change(5) securities affected affectedRefer annexure 13. Changes in associationThe persons who have become associates (3) of, ceased to be associates of, or have changed the nature of their association (7)with, the substantial holder in relation to voting interests in the company or scheme are as follows:Name and ACN/ARSN (if applicable) Nature of associationNOT APPLICABLE4. AddressesThe addresses of persons named in this form are as follows:Name AddressLEVEL 47 GATEWAY 1 MACQUARIE PLACE SYDNEYKenny HoNSW 2000Signatureprint name Kenny Ho capacity Company Secretarysign here date 24/05/2022----- End of picture text -----

Annexure 1

Changes in relevant interests

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----- Start of picture text ----- Considerationgiven in Number of PersonsNature of relation to securities Class of votesDate Person whose relevant interest changed Change change affected securities affected12/05/2022 Regal Funds Management Sell 102438.22 15135 Ordinary 1513513/05/2022 Regal Funds Management Sell 131312.00 20000 Ordinary 2000013/05/2022 Regal Funds Management Sell 77379.45 11522 Ordinary 1152216/05/2022 Regal Funds Management Sell 400842.00 60000 Ordinary 6000017/05/2022 Regal Funds Management Sell 1548610.47 221629 Ordinary 22162918/05/2022 Regal Funds Management Sell 529784.96 73951 Ordinary 7395119/05/2022 Regal Funds Management Sell 94917.02 12739 Ordinary 1273919/05/2022 Regal Funds Management Sell 204466.32 28693 Ordinary 2869320/05/2022 Regal Funds Management Sell 739460.00 100000 Ordinary 100000----- End of picture text -----