Serko Limited — Major Shareholding Notification 2023

May 24, 2023

Disclosure of movement of 1% or more in substantial holding or change in nature of relevant interest, or both

Sections 277 and 278, Financial Markets Conduct Act 2013

To NZX Limited and

To Serko Limited ( Serko )

Relevant event being disclosed: change in the nature of the relevant interest

Date of relevant event: 21 December 2022

Date this disclosure made: 24 May 2023

Date last disclosure made: 3 December 2020

Substantial product holder(s) giving disclosure

Full name(s): Geoffrey Hosking

Summary of substantial holding

Class of quoted voting products: ordinary shares in Serko ( Shares )

Summary for Geoffrey Hosking

For this disclosure,—

• (a) total number held in class: 10,884,629

• (b) total in class: 120,443,023

• (c) total percentage held in class: 9.037%

For last disclosure,—

• (a) total number held in class: 10,867,629

• (b) total in class: 107,818,438

• (c) total percentage held in class: 10.080%

Details of transactions and events giving rise to relevant event

Details of the transactions or other events requiring disclosure:

On 21 December 2022, the trustees of the Grafton Howe No. 2 Family Trust (being Geoffrey Hosking and Darrin Grafton) acquired 17,000 Shares via on-market trades and paid total consideration of $39,772.20.

Details after relevant event

Details for Geoffrey Hosking

Nature of relevant interest(s): Geoffrey Hosking as trustee of the Grafton Howe No. 2 Family Trust (together with the other trustee, Darrin Grafton) is the registered holder and

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beneficial owner of, and has the power to exercise a right to vote attached to, and to dispose of, and control the disposal of, 10,884,629 Shares.

For that relevant interest,—

• (a) number held in class: 10,884,629

• (b) percentage held in class: 9.037%

• (c) current registered holder(s): Geoffrey Hosking and Darrin Grafton as trustees of the Grafton Howe No.2 Family Trust (no change since previous disclosure)

• (d) registered holder(s) once transfers are registered: Geoffrey Hosking and Darrin Grafton as trustees of the Grafton Howe No.2 Family Trust

Additional information

Address(es) of substantial product holder(s): 145 Arney Road, Remuera, Auckland

Contact details: +64 9 920 6478, geoff.hosking@ah.co.nz

Name of any other person believed to have given, or believed to be required to give, a disclosure under the Financial Markets Conduct Act 2013 in relation to the financial products to which this disclosure relates: Darrin Grafton

Certification

I, Geoffrey Hosking, certify that, to the best of my knowledge and belief, the information contained in this disclosure is correct and that I am duly authorised to make this disclosure by all persons for whom it is made.

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