CALIX LIMITED - Capital/Financing Update 2021

March 22, 2021

==> picture [90 x 39] intentionally omitted <==

ASX Announcement

Calix Limited – Share Purchase Plan

Not for release to US wire services or distribution in the United States

Sydney, Australia | March 22, 2021 – Multi-award-winning Australian technology company Calix Limited (ASX: CXL) (“Calix” or “the Company”) is pleased to offer eligible Calix shareholders in Australia and New Zealand the opportunity to participate in the Calix Share Purchase Plan ( SPP ), as announced on 19 March 2021.

The SPP is open to holders of fully paid ordinary shares in Calix as at 7.00pm (AEST) on the record date of Thursday, 18 March 2021 and whose address on the share register is in Australia or New Zealand, provided that such shareholder is not in the United States or acting for the account or benefit of a person in the United States. The SPP is also being extended to eligible shareholders who are custodians, to participate in the SPP on behalf of certain eligible beneficiaries on the terms and conditions set out in the SPP booklet. The Directors of Calix who are eligible will participate in the SPP.

The SPP aims to raise up to $3.0m and is not underwritten. Calix reserves the right to increase the size of the SPP or scale back applications under the SPP in its absolute discretion.

Full details of the SPP are contained in the attached SPP booklet. The SPP booklet and an application form are being mailed to eligible shareholders today.

Applications for shares under the SPP open on Thursday, 25 March 2021 and close at 5pm (AEST) on Thursday, 8 April 2021.

If you have any questions in relation to the SPP, please contact the Calix share registry, Boardroom Pty Limited, on 1300 737 760 (callers within Australia) or +61 2 9290 9600 (callers outside Australia) at any time between 8.30am and 5.00pm (AEST), Monday to Friday.

IMPORTANT NOTICE

This announcement does not constitute an offer, invitation or recommendation to subscribe for or purchase any security and neither this announcement nor anything contained in it shall form the basis of any contract or commitment. In particular, this announcement does not constitute an offer to sell, or a solicitation of an offer to buy, securities in the United States. The securities in the proposed offering have not been and will not be registered under the U.S. Securities Act of 1933, or under the securities law of any state or other jurisdiction of the United States. Accordingly, the securities in the proposed offering may not be offered or sold, directly or indirectly, in the United States, except in a transaction exempt from, or not subject to, the registration requirements of the U.S. Securities Act and applicable U.S. state securities laws. This document may not be released to US wire services or distributed in the United States.

A reference to $ in this announcement is to Australian Dollars.

ENDS

==> picture [562 x 57] intentionally omitted <==

==> picture [90 x 39] intentionally omitted <==

This announcement has been authorised for release to the ASX by:-

Phil Hodgson Managing Director Calix Limited 9-11 Bridge Street Pymble NSW 2073 Ph +61 2 8199 7400

About Calix

Calix is a team of dedicated people developing a unique, patented technology to provide industrial solutions that address global sustainability challenges.

The core technology is being used to develop more environmentally friendly solutions for advanced batteries, crop protection, aquaculture, wastewater and carbon reduction.

Calix develops its technology via a global network of research and development collaborations, including governments, research institutes and universities, some of world’s largest companies, and a growing customer base and distributor network for its commercialised products and processes.

Because there’s only one Earth – Mars is for Quitters.

Website: https://www.calix.global/ Twitter: @CalixLimited Youtube: CalixLimited

For more information:

Phil Hodgson Managing Director and CEO [email protected] +61 2 8199 7400

Darren Charles

CFO and Company Secretary [email protected] +61 2 8199 7400

Simon Hinsley

Investor Relations

[email protected] +61 401 809 653

==> picture [562 x 57] intentionally omitted <==

This document has been prepared for informational purposes only and is not intended to amount to financial product advice or a recommendation in relation to any investments or securities. You should not rely on it to make investment decisions. This document contains general factual information only and has not been independently verified. Any opinions or information expressed in the document are subject to change without notice.

CALIX LIMITED (ASX:CXL)

Share Purchase Plan (SPP) Offer Booklet

YOU SHOULD READ THIS BOOKLET IN FULL

This Booklet contains important information. You should read this Booklet in full and seek advice from your stockbroker, accountant or other professional adviser if you have any questions about your investment in Calix or about the impact of the transactions described in this Booklet. This Booklet does not provide financial advice and has been prepared without taking into account your particular objectives, financial situation or needs.

If you apply for SPP Shares under the SPP, there is a risk that the market price of Calix Shares may change between the date you apply for SPP Shares and the date when the SPP Shares are issued to you under the SPP. This means there is a risk that Calix's market price at the time the SPP Shares are issued will be less than the SPP Issue Price. By applying for SPP Shares under the SPP, you will be acknowledging and accepting this risk.

If you have any questions in relation to how to participate in the SPP after reading this Booklet, please contact Calix's Registry, Boardroom Pty Limited, from 8.30am to 5.00pm Monday to Friday on 1300 737 760 (callers within Australia) or +61 2 9290 9600 (callers outside Australia).

Participation in the SPP is only open to holders of fully paid ordinary shares in Calix at 7.00pm (AEST) on Thursday, 18 March 2021 and whose address on the share register is in Australia or New Zealand. The SPP is also being extended to eligible shareholders of Calix who are custodians to participate in the SPP on behalf of eligible beneficiaries on the terms and conditions set out in this Booklet.

This Booklet is not for release or distribution in the United States or, except with the consent of Calix, elsewhere outside Australia and New Zealand.

Page 2

Letter from the Chair

Dear Shareholder

On behalf of the Directors, I am pleased to offer you the opportunity to participate in Calix Limited's (Calix) share purchase plan (SPP) which was announced on Friday, 19 March 2021. The SPP provides each eligible Calix shareholder the opportunity to subscribe for up to $30,000 worth of new, fully paid, ordinary shares in Calix (SPP Shares) , without incurring brokerage or other transaction costs. The SPP aims to raise up to $3.0m and is not underwritten. Calix reserves the right to increase the size of the SPP or may decide to scale back applications under the SPP at its absolute discretion.

As announced on Friday, 19 March 2021, Calix recently undertook a placement of fully paid, ordinary shares to institutional and professional investors (Placement Shares) raising $14.0m (Placement) . [Proceeds of the Placement will be used to fund Calix’s development of lithium-ion hybrid batteries based on nano-active electrode materials.] The funds raised from the SPP are also intended to be applied by Calix for this purpose.

The SPP gives you the opportunity to increase your holding of fully paid ordinary shares in Calix (Shares) at an issue price consistent with the issue price under the Placement. The issue price of the SPP Shares will be $2.00 per SPP Share, which is the price at which Placement Shares were issued to investors under the Placement.

The Issue Price represents a 10.4% discount to the volume weighted average price of Shares over the 5-day period to Tuesday, 16 March 2021 (rounded to the nearest cent).

You may apply for a parcel of SPP Shares valued at any amount in multiples as set out in the SPP Application Form between $1,000 and $30,000. Applications may be scaled back at the absolute discretion of Calix.

The Directors of Calix who are eligible will be participating in the SPP.

Participation in the SPP is optional and open to eligible shareholders, being holders of fully paid ordinary shares in Calix at 7.00pm (AEST) on Thursday, 18 March 2021 (the Record Date ) and whose address on the share register is in Australia or New Zealand. The SPP is also being extended to eligible shareholders who are custodians to participate in the SPP on behalf of certain eligible beneficiaries on the terms and conditions set out in this Booklet.

Your right to participate in the SPP is not transferable.

All SPP Shares will rank equally with existing Shares in Calix.

The terms and conditions of the SPP and your personalised Application Form are provided in this booklet (Booklet) . I urge you to read these materials in their entirety and seek your own financial and taxation advice in relation to the SPP, before you decide whether to participate.

Page 3

The SPP opens on Thursday, 25 March 2021 and is expected to close at 5.00pm (AEST) on Thursday, 8 April 2021. SPP Shares are expected to commence trading on ASX on Tuesday, 13 April 2021.

To apply for SPP Shares, you must either:

complete and return the personalised Application Form, together with payment via cheque; or
make a payment directly via BPAY (you do not need to return an Application Form under this option).

If you have any questions in relation to how to participate in the SPP, please contact Calix's share registry, Boardroom Pty Limited from 8.30am to 5.00pm Monday to Friday on 1300 737 760 (callers within Australia) or +61 2 9290 9600 (callers outside Australia) or consult your financial or other professional adviser. If you have any questions in relation to whether an investment in Calix through the SPP is appropriate for you, please contact your stockbroker, accountant or other professional adviser.

On behalf of the Board, I thank you for your continued support, and invite you to consider participating in the SPP.

Yours sincerely

==> picture [88 x 43] intentionally omitted <==

Peter J Turnbull, AM Chair

Page 4

Important notice and disclaimer

This Booklet does not provide financial advice and has been prepared without taking account of any person's investment objectives, financial situation or particular needs. You should consider the appropriateness of participating in the SPP having regard to your investment objectives, financial situation or particular needs. Shareholders should seek independent financial and taxation advice before making any investment decision in relation to these matters.

The offer of SPP Shares under the SPP is made in accordance with ASIC Corporations (Share and Interest Purchase Plans) Instrument 2019/547) which continues the granting of relief from the requirement for Calix to provide prospectus disclosure in relation to the SPP under the former applicable instrument (ASIC Class Order 09/425) and which increases the participation limit (for each registered holder in a 12-month period) from $15,000 to $30,000.

This Booklet is not a prospectus under Chapter 6D of the Corporations Act.

The laws of some countries prohibit or make impracticable participation in the SPP by certain overseas Calix Shareholders. Shareholders who are not resident in Australia or New Zealand will not be able to participate in the SPP. The SPP does not constitute an offer of Shares for sale in any other jurisdiction.

New Zealand

The SPP Shares are not being offered or sold to the public within New Zealand other than to existing Shareholders of Calix at the Record Date with registered addresses in New Zealand to whom the offer of SPP Shares is being made in reliance on the Financial Markets Conduct Act 2013 (New Zealand) and the Financial Markets Conduct (Incidental Offers) Exemption Notice 2016 (New Zealand).

This Booklet has not been registered, filed with or approved by any New Zealand regulatory authority. This Booklet is not a product disclosure statement under New Zealand law and is not required to, and may not, contain all the information that a product disclosure statement under New Zealand law is required to contain.

Important information for holders of Calix Shares outside Australia and New Zealand

This Booklet does not constitute an offer of securities in any place outside Australia or New Zealand. In particular, this Booklet does not constitute an offer to sell, or a solicitation of an offer to buy, securities in the United States. The SPP Shares have not been and will not be registered under the US Securities Act of 1933, as amended, (the Securities Act ) or the securities laws of any state or other jurisdiction of the United States. The SPP Shares may not be offered, sold or otherwise transferred in the United States except in a transaction exempt from, or not subject to, the registration requirements of the Securities Act and the applicable securities laws of any state or other jurisdiction in the United States.

Page 5

Because of these legal restrictions, you must not send copies of this Booklet or any other material relating to the SPP to any person resident in the United States or elsewhere outside Australia and New Zealand.

Page 6

A Key Dates

Record Date (the date that eligibility to participate in the 7.00pm (AEST) Thursday, 18 March 2021 SPP is determined) Opening Date Thursday, 25 March 2021 Closing Date 5.00pm (AEST) Thursday, 8 April 2021 Pricing $2.00 per SPP Share Issue of SPP Shares Monday, 12 April 2021 SPP Shares commence trading on ASX Tuesday, 13 April 2021 Despatch of SPP Shareholding Tuesday, 13 April 2021 statements

This timetable is indicative only and Calix may, at its discretion, vary any of the above dates by sending a revised timetable to ASX. All times are Sydney times.

Refer to the Glossary in Part D for a description of any capitalised terms that are used but not otherwise defined in this Booklet.

B Key SPP Information

You should read this section in conjunction with the attached Terms and Conditions of the SPP.

1. What is the share purchase plan or SPP?

The SPP is an offer to Eligible Shareholders of Calix to each subscribe for up to $30,000 worth of SPP Shares without brokerage or other transaction costs.

Under the SPP, Eligible Shareholders may each apply for SPP Shares in parcels valued at a minimum of $1,000 up to a maximum of $30,000 in multiples as set out in the SPP Application Form. Applications may be scaled back at the absolute discretion of Calix.

2. Do I have to participate in the SPP?

No. Participation in the SPP is entirely voluntary.

Page 7

Before you decide whether to participate in the SPP, Calix recommends you seek independent financial advice from your stockbroker, accountant or other professional adviser.

If you do not wish to participate in the SPP, you do not need to take any action.

If you do not participate in the SPP, you will receive no value or other benefit in respect of any SPP Shares to which you may have been entitled under the SPP.

3. What is the Issue Price of the SPP Shares?

The Issue Price of the SPP Shares will be $2.00 per SPP Share, which is the price at which Placement Shares were issued to investors under the Placement.

The Issue Price represents a 10.4% discount to the volume weighted average price of Shares over the 5-day period to Tuesday, 16 March 2021 (rounded to the nearest cent).

Your application is unconditional and may not be withdrawn even if the market price of Shares is less than the Issue Price.

4. Who is eligible to participate in the SPP?

Shareholders who are registered holders of Shares at 7.00pm (AEST) on Thursday, 18 March 2021 with a registered address in either Australia or New Zealand provided that such Shareholder is not in the United States, or acting for the account or benefit of a person in the United States (Eligible Shareholder) .

The SPP is also being extended to Eligible Shareholders who are Custodians to participate in the SPP on behalf of Eligible Beneficiaries on the terms and conditions provided in this Booklet.

5. Can my offer under the SPP be transferred to a third party?

No. The offer cannot be transferred.

Page 8

6. How much can I invest under the SPP?

Eligible Shareholders may apply for SPP Shares in parcels valued at a minimum of $1,000, and then in multiples as set out in the SPP Application Form, up to a maximum of $30,000.

The number of SPP Shares issued to an applicant will be rounded up to the nearest whole number after dividing the application monies by the Issue Price. Applications may be scaled back at the absolute discretion of Calix.

7. How do I apply for SPP Shares?

If you wish to participate in the SPP, you need to do one of the following.

Option 1: Pay by Cheque

Please complete the enclosed Application Form and return it with your cheque made payable to "Calix Limited", drawn on an Australian financial institution and crossed "Not Negotiable" in the enclosed reply-paid envelope to:

Boardroom Pty Limited (Registry) GPO Box 3993 Sydney NSW 2001 Australia

Your completed Application Form and cheque for the appropriate amount must be received by the Registry prior to the close of the SPP Offer at 5.00pm (AEST) on Thursday, 8 April 2021. Shareholders in New Zealand will need to affix the appropriate postage to the replypaid envelope.

Option 2: Pay via BPAY®

To pay via BPAY you will need to:

be an account holder with an Australian financial institution;
use the personalised reference number shown on your Application Form which is required to identify your shareholding; and
ensure that your payment for the appropriate amount is received by the Registry before the SPP Closing Date of 5.00pm (AEST) on Thursday, 8 April 2021.

You should take into account the cut-off times your financial institution has to ensure your payment is received in advance of the SPP Closing Date. You can only make payment via BPAY if you are the holder of an account with an Australian financial institution that supports BPAY transactions.

If you are paying via BPAY there is no need to return the Application Form but you will be taken to have made the acknowledgements, representations, statements and certifications that are set out in the Application Form as well as in this Booklet.

Page 9

8. What are the key dates for the SPP?

Calix reserves the right to vary these times and dates in its absolute discretion by sending a revised timetable to ASX. All times are Sydney times.

9. What are the rights attached to SPP Shares issued under the SPP?

SPP Shares will rank equally with other Shares as at the date of issue.

10. What do I do if I am a Custodian?

The SPP is being extended to Eligible Shareholders who are Custodians and who wish to apply for SPP Shares on behalf of certain Eligible Beneficiaries.

The SPP is being offered to Custodians as the registered Shareholder. Custodians are not required to participate on behalf of their Eligible Beneficiaries. Custodians may choose whether or not to extend the SPP to their Eligible Beneficiaries. If you wish to apply as a Custodian under the SPP to receive SPP Shares for one or more Eligible Beneficiaries, you must complete and submit an additional "Custodian Certificate" that contains further certifications and details (as required under the terms of ASIC Corporations (Share and Interest Purchase Plans) Instrument 2019/547) and ASIC Class Order 09/425) before your application will be accepted. Applications by Custodians that are not accompanied by a duly completed Custodian Certificate will be rejected. By applying as a Custodian on behalf of Eligible Beneficiaries to purchase SPP Shares, you certify (amongst other things) that each Eligible Beneficiary has not exceeded the $30,000 limit.

To request a Custodian Certificate or for further information about the custodian application process, please contact Calix's share registry, Boardroom Pty Limited, from 8.30am to

Page 10

5.00pm Monday to Friday on 1300 737 760 (callers within Australia) or +61 2 9290 9600 (callers outside Australia).

Each Custodian must not participate in the SPP on behalf of, and must not distribute this Booklet or any documents relating to this SPP to, any person in the United States.

A custodian will be ineligible to participate in the SPP if their participation would be in breach of ASIC Corporations (Share and Interest Purchase Plans) Instrument 2019/547) and ASIC Class Order 09/425.

11. Will I receive notification of my issue?

Yes. Calix currently intends to issue the SPP Shares on Monday, 12 April 2021. The Registry will send you a holding statement on or around Tuesday, 13 April 2021 which will include details of the number of SPP Shares issued to you, your total holding of Shares and the Issue Price of the SPP Shares. However, these dates are indicative only and may be varied by Calix in its discretion. You can confirm your total holding of Shares by contacting the Registry from 8.30am to 5.00pm Monday to Friday on 1300 737 760 (callers within Australia) or +61 2 9290 9600 (callers outside Australia).

12. When can I trade my SPP Shares?

You can trade your SPP Shares after the Issue Date. However, given the possibility that applications may be scaled back, you should confirm your holding on or after the Issue Date before trading any SPP Shares you believe you have acquired. You can confirm your total holding of Shares by contacting the Registry from 8.30am to 5.00pm Monday to Friday on 1300 737 760 (callers within Australia) or +61 2 9290 9600 (callers outside Australia).

13. Where can I get more information on the SPP?

14. What will happen if the SPP is oversubscribed?

The amount that each Eligible Shareholder can apply for under the SPP is capped at $30,000. The SPP aims to raise up to $3.0m. Calix may decide to accept applications (in whole or in part) that result in the SPP raising less than this amount in its absolute discretion.

Page 11

Calix may, at its absolute discretion, scale back the number of SPP Shares that will be allotted to individual Shareholders under this SPP.

In the event that a scale back methodology is used, Calix intends to base the scale back on each applicant's shareholding as at the Record Date, although the exact scale back method will be at the Board's discretion.

Page 12

C Terms and Conditions of the SPP

Important Notice

If you participate in the SPP by completing and returning the Application Form or by making a payment by BPAY, you are accepting the risk that the market price of Shares may change between the Record Date, the date on which you send in the Application Form or make a payment by BPAY, and the Issue Date. This means that, up to and/or after the Issue Date, you may be able to buy Shares on the ASX at a lower price than the Issue Price.

Please read these terms and conditions carefully, as you will be bound by them in participating in the SPP. Shareholders accepting the SPP Offer will also be bound by the constitution of Calix.

The Important notice and disclaimer, Key Dates, and Key SPP Information sections of this Booklet form part of these terms and conditions.

1 Offer

1.1 Calix Limited (Calix) offers each Eligible Shareholder the opportunity to purchase up to $30,000 worth of SPP Shares under the Share Purchase Plan (SPP) subject to and in accordance with the terms and conditions set out below.
1.2
In these terms and conditions, "SPP" means the offer in clause 1.1.
1.3 The SPP opens on Thursday, 25 March 2021 and closes at 5.00pm (AEST) on Thursday, 8 April 2021 (or such other date as Calix determines, in its absolute discretion).
1.4 If you choose not to participate in the SPP, your right to participate lapses at the Closing Date, being 5.00pm (AEST) on Thursday, 8 April 2021 (or such other date as Calix determines, in its absolute discretion).
1.5 The SPP is non-transferable and, therefore, Eligible Shareholders cannot transfer their right to purchase SPP Shares to a third party.
1.6 The SPP to each Eligible Shareholder (whether as a Custodian or on its own account) is made on the same terms and conditions.
1.7 All references to $ or dollars in this Booklet are references to Australian dollars unless otherwise indicated.

Page 13

2 Eligible Shareholders

2.1 You are eligible to participate in the SPP if you:
(a) were registered on the Register as a Shareholder at 7.00pm (AEST) on Thursday, 18 March 2021 (Record Date) ;
(b) have a registered address in either Australia or New Zealand at that time; and
(c) are not in the United States and are not acting for the account or benefit of a person in the United States.
2.2 The SPP is also extended to Eligible Shareholders who are Custodians, in accordance with clauses 3.2 and 4.5 below.
2.3 The SPP is not made to Shareholders with a registered address outside of Australia or New Zealand.

3 Joint holders/Custodians

3.1 If two or more persons are registered on the Register as jointly holding Shares, they are taken to be a single registered holder of Shares for the purposes of determining whether they are an Eligible Shareholder and a certification given by any of them is taken to be a certification given by all of them.
3.2 Subject to these terms and conditions, Eligible Shareholders who are Custodians may participate in the SPP on behalf of each Eligible Beneficiary on whose behalf the Custodian is holding Shares.

4 Applications for SPP Shares

4.1 Eligible Shareholders may apply for SPP Shares in parcels valued at a minimum of $1,000, and then in multiples as set out in the SPP Application Form, up to a maximum of $30,000.
4.2 No brokerage or other transaction costs will apply to the acquisition of SPP Shares.
4.3 Eligible Shareholders who wish to apply for SPP Shares must either:
(a) complete the enclosed Application Form and forward it with a cheque drawn for the appropriate amount from an Australian financial institution made payable to "Calix Limited" and crossed "Not Negotiable" in the enclosed business reply envelope so that it is received prior to 5.00pm (AEST) on Thursday, 8 April 2021. Shareholders in New Zealand will need to affix the appropriate postage to the reply-paid envelope; or

Page 14

(b) make a payment for the appropriate amount via BPAY in accordance with the instructions on the Application Form so that it is received prior to 5.00pm (AEST) on Thursday, 8 April 2021.
4.4 Eligible Shareholders who receive more than one offer under the SPP (for example, because they hold Shares in more than one capacity or in different registered holdings) may apply on different Application Forms for SPP Shares but may not apply for SPP Shares with an aggregate value of more than $30,000.
4.5 If you wish to subscribe for SPP Shares as a Custodian for one or more Eligible Beneficiaries, you must also complete and submit a Custodian Certificate that contains further certifications and details (required under the terms of ASIC Corporations (Share and Interest Purchase Plans) Instrument 2019/547 and ASIC Class Order 09/425) before your application will be accepted. Applications by Custodians that are not accompanied by a duly completed Custodian Certificate will be rejected.
4.6 Calix and its officers and agents, may accept or reject your application for SPP Shares in whole or in part at their discretion including, without limitation, if:
(a) your application does not comply with these terms and conditions;
(b) it appears you are not an Eligible Shareholder;
(c) your Application Form and cheque or BPAY payment is not received by the Registry by the Closing Date;
(d) if paying by cheque, your Application Form is incomplete or incorrectly completed or is otherwise determined by Calix to be invalid;
(e) your cheque is dishonoured or has been incorrectly completed;
(f) it appears that you are applying to purchase more than $30,000 worth of SPP Shares in aggregate (including as a result of Shares you hold directly, jointly or through a custodian or nominee arrangement) or your application is not in multiples as set out in the SPP Application Form;
(g) payment of the application monies is not submitted in Australian currency or, if payment is made by cheque, the cheque is not drawn on an Australian financial institution; or
(h) the amount of your BPAY payment or cheque is not equal to the amount of your application. If this occurs, Calix will:
- (i) refund in full your application monies and not allot any SPP Shares to you; or

Page 15

  - (ii) allot to you the number of SPP Shares that would have been allotted had you applied for the highest designated amount that is less than the amount of your payment and refund to you the excess of your application monies.

4.7 If you are entitled to a refund of all or any of your application monies, the refund will be paid to you, without interest, as soon as is practicable:
(a) by direct credit to your nominated account (as recorded on the Register) or cheque; or
(b) by returning your Application Form and cheque, if not processed, to your registered address (as recorded on the Register).

5 Issue Price

5.1 The Issue Price per SPP Share will be $2.00 per SPP Share, which is the price at which Placement Shares were issued to investors under the Placement.
5.2 The Issue Price represents a 10.4% discount to the volume weighted average price of Shares over the 5-day period to Tuesday, 16 March 2021 (rounded to the nearest cent).
5.3 The current Share price can be obtained from the ASX at www.asx.com.au.
5.4 By applying for SPP Shares, you agree to pay the Issue Price per SPP Share for the number of SPP Shares calculated under clause 6.1 or, if there is a scale back, the number of SPP Shares calculated under clause 9.

6 Number of SPP Shares to be issued

6.1 If you apply for SPP Shares, you will apply for a certain value, rather than a certain number, of SPP Shares. If your application is accepted, Calix will divide the value of your application monies by the Issue Price (as determined under clause 5.1) in order to determine the number of SPP Shares which, subject to scale back, will be issued to you.
6.2 If this calculation produces a fractional number, the number of SPP Shares issued will be rounded up to the nearest whole SPP Share.
6.3 Calix will not issue SPP Shares to an applicant if the issue of those SPP Shares, either alone or in conjunction with the issue of Shares under any other applications, would contravene any law, the Corporations Act, the listing rules of the ASX, ASIC Class Order 09/425 or ASIC Corporations (Share and Interest Purchase Plans) Instrument 2019/547.

Page 16

7 Issue

7.1 SPP Shares will be issued on the Issue Date.
7.2
SPP Shares will rank equally with existing Shares as at the Issue Date.
7.3 Calix will apply to ASX for the quotation of SPP Shares. It is anticipated that SPP Shares will be quoted on the ASX on or around Tuesday, 13 April 2021.
7.4 The Registry will send you a holding statement, confirming the issue of SPP Shares, on or around Tuesday, 13 April 2021.

8 Acknowledgements

8.1 By returning an Application Form with a cheque or making a payment via BPAY, you:
(a) are deemed to have accepted the SPP offer and you irrevocably and unconditionally agree to the terms and conditions of the SPP and the terms and conditions of the Application Form and agree not to do any act or thing that would be contrary to the spirit, intention or purpose of the SPP;
(b) warrant that all details and statements in your application are true and complete and not misleading;
(c) agree that your application will be irrevocable and unconditional (that is, it cannot be withdrawn);
(d) agree that your application is only effective when received by Calix and not when it is posted;
(e) warrant that you are an Eligible Shareholder and are eligible to lawfully participate in the SPP and apply for SPP Shares, in each case in accordance with these terms and conditions as well as any applicable laws;
(f) acknowledge that no interest will be paid on any application monies held pending the issue of SPP Shares or subsequently refunded to you for any reason;
(g) acknowledge that Calix and its officers and agents, are not liable for any consequences of the exercise or non-exercise of its discretions referred to in these terms and conditions;
(h) agree to pay the Issue Price per SPP Share up to the maximum of:
- (i) the value you have selected on the Application Form; or

Page 17

(ii) the maximum value of your BPAY payment or cheque;
(i) acknowledge and agree that:
(i) you are not in the United States and are not acting for the account or benefit of a person in the United States;
(ii) the SPP Shares have not been, and will not be, registered under the Securities Act or the securities laws of any state or other jurisdiction of the United States, and accordingly, the SPP Shares may not be offered, sold or otherwise transferred without registration under the Securities Act or unless the SPP Shares are offered, sold or otherwise transferred in a transaction exempt from, or not subject to, the registration requirements of the Securities Act, and the securities laws of any state or any other jurisdiction in the United States;
(iii) you have not, and will not, send this Booklet or any materials relating to the SPP to any person in the United States or to any person located in any other country outside Australia and New Zealand;
(iv) if in the future you decide to sell or otherwise transfer the SPP Shares, you will only do so in the regular way for transactions on the ASX where neither you nor any person acting on your behalf know, or have reason to know, that the sale has been pre-arranged with, or that the purchaser is, or is acting or the benefit or account of, a person in the United States; and
(v) if you are acting as a trustee, nominee or Custodian, each beneficial holder on whose behalf you are participating is resident in Australia or New Zealand, and you have not sent this Booklet, or any materials relating to the SPP, to any person outside Australia and New Zealand;
(j) if you are applying on your own behalf (and not as a Custodian), acknowledge and agree that:
(i) you are not applying for SPP Shares with an application price of more than $30,000 under the SPP (including by instructing a Custodian to acquire SPP Shares on your behalf under the SPP);
(ii) the total of the application price for the following does not exceed $30,000:
- (A) the SPP Shares the subject of the application;
- (B) any other Shares issued to you under the SPP or any similar arrangement in the 12 months before the application;
- (C) any other SPP Shares which you have instructed a Custodian to acquire on your behalf under the SPP; and

Page 18

  - (D) any other Shares issued to a Custodian in the 12 months before the application as a result of an instruction given by you to the Custodian to apply for Shares on your behalf under an arrangement similar to the SPP;

(k) if you are a Custodian and are applying for SPP Shares on behalf of an Eligible Beneficiary on whose behalf you hold Shares, acknowledge and agree that:
(i) you are a Custodian (as that term is defined in ASIC Class Order 09/425);
(ii) you held Shares on behalf of the Eligible Beneficiary as at the Record Date who has instructed you to apply for SPP Shares on their behalf under the SPP and that that Eligible Beneficiary has been given a copy of this Booklet;
(iii) you are not applying for SPP Shares on behalf of any Eligible Beneficiary with an application price of more than $30,000 under the SPP;
(iv) your application will not be accepted unless you duly complete and submit a Custodian Certificate in accordance with clause 4.5; and
(v) the information in the Custodian Certificate submitted with your Application Form is true, correct and not misleading;
(l) accept the risk associated with any refund that may be dispatched to you by direct credit or cheque to your address shown on the Register;
(m) are responsible for any dishonour fees or other costs Calix may incur in presenting a cheque for payment which is dishonoured;
(n) agree to be bound by the constitution of Calix (as amended and as it may be amended from time to time in the future);
(o) acknowledge that none of Calix, its officers, advisers or agents, has provided you with any financial product or investment advice or taxation advice in relation to the SPP, or has any obligation to provide such advice;
(p) acknowledge that Calix may at any time irrevocably determine that your application is valid, in accordance with the terms and conditions of the SPP, even if the Application Form is incomplete, contains errors or is otherwise defective; and
(q) authorise Calix, and its officers and agents, to correct minor or easily rectified errors in, or omissions from, your Application Form and to complete the Application Form by the insertion of any missing minor detail.

Page 19

9 Scale Back

9.1 Calix may in its discretion undertake a scale back of applications for SPP Shares to the extent and in the manner it sees fit.
9.2 If there is a scale back you may receive less than the parcel of SPP Shares for which you have applied.
9.3 If a scale back produces a fractional number of SPP Shares when applied to your parcel, the number of SPP Shares you will be allotted will be rounded up to the nearest whole number of SPP Shares.
9.4 If there is a scale back, the difference between the application monies received from you, and the number of SPP Shares allocated to you multiplied by the Issue Price, will be refunded to you without interest.

10 ASIC relief

10.1 This offer of SPP Shares under the SPP is made in accordance with ASIC Class Order 09/425 and ASIC Corporations (Share and Interest Purchase Plans) Instrument 2019/547, which grant relief from the requirement to prepare a disclosure document for the SPP subject to certain requirements.
10.2 Calix has, prior to the release of this Booklet, given a notice to ASX that complies with the requirements of ASIC Class Order 09/425 and ASIC Corporations (Share and Interest Purchase Plans) Instrument 2019/547.

11 Dispute resolution

11.1 Calix may settle, in any manner it determines, any difficulties, anomalies, or disputes which may arise in connection with, or by reason of, the operation of the SPP whether generally or in relation to any participant or any application for SPP Shares, and its decision shall be conclusive and binding on all participants and other persons to whom the determination relates.
11.2 The powers of Calix under these terms and conditions may be exercised by the Directors or any delegate or representative of the Directors.

12 Variation and termination

12.1 Calix reserves the right at any time to:
(a) amend or vary these terms and conditions;
(b) waive strict compliance with any provision of these terms and conditions;

Page 20

(c) withdraw the SPP or suspend or terminate the SPP;
(d) vary the timetable for the SPP, including the Closing Date; and
(e) not accept an application, not issue SPP Shares or issue SPP Shares to a value less than that applied for under the SPP by an Eligible Shareholder (including a Custodian applying on behalf of its Eligible Beneficiaries).
12.2 In the event that the SPP is withdrawn or terminated all application monies will be refunded. No interest will be paid on any money returned to you.

13 Privacy policy

13.1 Calix values your privacy and will take reasonable steps to protect your personal information in accordance with applicable data privacy laws and regulations. Calix and the Registry are bound by the Privacy Act 1988 (Cth) in relation to the collection, use and disclosure of personal information about you. Chapter 2C of the Corporations Act requires information about you as a securityholder (including your name, address and details of the securities you hold) to be included in the public register of the entity in which you hold securities. This information must continue to be included in the public register if you cease to be a securityholder.
13.2 Calix and the Registry may collect personal information to process your application, implement the SPP and administer your holding of Shares. The personal information contained in the Register is also used to facilitate payments and corporate communications (including financial results, annual reports and other information to be communicated to Shareholders) and to ensure compliance with legal and regulatory requirements, including Australian taxation laws and the Corporations Act.
13.3 Your personal information may be disclosed to joint investors, the Registry, securities brokers, third party service providers (including print and mail service providers), technology providers and professional advisers, related entities of Calix and its agents and contractors, as well as ASX and other regulatory authorities, and in any case, where disclosure is required or allowed by law (which may include disclosures to the Australian Taxation Office and other government or regulatory bodies or where you have consented to the disclosure). In some cases, the types of organisations referred to above to whom your personal information may be disclosed may be located overseas where such personal information may not receive the same level of protection as under Australian law.
13.4 Boardroom Pty Limited's privacy policy is available on their website: https://boardroomlimited.com.au/corp/privacy-policy/

Page 21

14 Underwriting

14.1 The SPP is not underwritten.

15 Governing law and inconsistencies

15.1 These terms and conditions are governed by the laws in force in New South Wales. Any dispute arising out of, or in connection with, these terms and conditions, or the SPP, will be determined by the courts of New South Wales. By accepting the SPP, you agree to submit to the non-exclusive jurisdiction of the courts in New South Wales. Other terms and conditions, rights and obligations of SPP Shares are contained in the constitution of Calix. The terms and conditions of the SPP prevail to the extent of any inconsistency with the Application Form.

Page 22

D Glossary

The following definitions apply throughout this Booklet unless the context requires otherwise.

AEST Australian Eastern Standard Time. Application Form your personalised application form enclosed with this Booklet. ASIC Australian Securities and Investments Commission. ASX ASX Limited ACN 008 624 691 or the market operated by it as the context requires. Beneficiary a person on whose behalf a Custodian is holding Shares at 7.00pm (AEST) on Thursday, 18 March 2021. Closing Date 5:00pm (AEST) on Thursday, 8 April 2021 (or such other date as Calix determines, in its absolute discretion). Corporations Act the Corporations Act 2001 (Cth). Custodian a custodian as defined in paragraph 14 of ASIC Class Order 09/425. Custodian a certificate complying with paragraph 9 of ASIC Class Order 09/425. Certificate Director a director of Calix Limited. Eligible a Beneficiary of a Custodian with a registered address in either Beneficiary Australia or New Zealand, provided that such Beneficiary is not in the United States or acting for the account or benefit of a person in the United States. Eligible a Shareholder who is a registered holder of Shares at 7.00pm (AEST) Shareholder on Thursday, 18 March 2021 with a registered address in either Australia or New Zealand, provided that such Shareholder is not in the United States or acting for the account or benefit of a person in the United States. Issue Date Monday, 12 April 2021 (or such other date as Calix determines, in its absolute discretion). Issue Price the price per SPP Share as determined under clause 5 of the terms and conditions of the SPP.

Page 23

Offer Period the period commencing on the Opening Date and ending on the Closing Date.

Opening Date Thursday, 25 March 2021.

Placement the placement of fully paid ordinary shares by Calix to institutional and professional investors, raising $14.0m, announced on Friday, 19 March 2021

Placement Shares Shares issued under the Placement.

Pricing Period the 5-day period to Tuesday, 16 March 2021.

Calix or the Calix Limited ABN 74 615 510 177. Company Record Date 7.00pm (AEST) on Thursday, 18 March 2021. Register the register of Shareholders. Registry Boardroom Pty Limited ABN 14 003 209 836.

Securities Act U.S. Securities Act of 1933, as amended. Share a fully paid ordinary share in Calix.

Shareholder a registered holder of Shares.

SPP the share purchase plan offer made to Eligible Shareholders under this Booklet, as described in clause 1.1 of the terms and conditions of the SPP.

SPP Shares new Shares to be offered to Eligible Shareholders under the SPP.

Page 24