Renewal Lease by Reference to an Existing Lease, Unit B2/3, Linhay Business Park, Eastern Road, Ashburton, Devon TQ13 7UP, United Kingdom, dated as of April 9, 2018, by and between Cambium Networks, Ltd and Stephanie Myers Palk, Richard John Palk and Alison June Palk

Exhibit 10.4

DATED

April 9, 2018

RENEWAL LEASE BY REFERENCE TO AN EXISTING LEASE

UNIT B2/3, LINHAY BUSINESS PARK, ASHBURTON, TQ13 7UP

between

STEPHANIE MYERS PALK, RICHARD JOHN PALK AND ALISON JUNE PALK

and

CAMBIUM NETWORKS, LTD

EXETER

EX1 1NT

Tel: 01392 823811

DX: 122695 EXETER

***@***

www.otbeveling.com

CONTENTS

CLAUSE

SCHEDULE

PRESCRIBED CLAUSES

LR1. Date of lease April 9, 2018

LR2. Title number(s)

LR2.1 Landlord’s title number(s)

DN245884

LR2.2 Other title numbers

LR3. Parties to this lease

Landlord

STEPHANIE MYERS PALK, RICHARD JOHN PALK and ALISON JUNE PALK

All care of Halsanger Manor, Ashburton, Devon, TQ13 7HY

Tenant

CAMBIUM NETWORKS, LTD

Of Unit B2 Linhay Business Park, Eastern Road, Ashburton, Newton Abbot, TQ13 7UP

Company number: 07752773

Other parties

None

LR4. Property

In the case of a conflict between this clause and the remainder of this lease then, for the purposes of registration, this clause shall prevail.

See the definition of “Property” in clause 1.1 of this lease and the definition of “Premises” in clause 1 of the Previous Lease.

LR5. Prescribed statements etc.

LR5.1 Statements prescribed under rules 179 (dispositions in favour of a charity), 180 (dispositions by a charity) or 196 (leases under the Leasehold Reform, Housing and Urban Development Act 1993) of the Land Registration Rules 2003.

1

None.

LR5.2 This lease is made under, or by reference to, provisions of:

None.

LR6. Term for which the Property is leased

The term as specified in this lease at clause 1.1 in the definition of “Contractual Term”.

LR7. Premium

None.

LR8. Prohibitions or restrictions on disposing of this lease

This lease contains a provision that prohibits or restricts dispositions.

LR9. Rights of acquisition etc.

LR9.1 Tenant’s contractual rights to renew this lease, to acquire the reversion or another lease of the Property, or to acquire an interest in other land

None.

LR9.2 Tenant’s covenant to (or offer to) surrender this lease

None.

LR9.3 Landlord’s contractual rights to acquire this lease

None.

LR10. Restrictive covenants given in this lease by the Landlord in respect of land other than the Property

None.

LR11. Easements

LR11.1 Easements granted by this lease for the benefit of the Property

The easements included in clause 1.1 of this lease in the definition of “Incorporated Terms” and specified in Schedule 2 of the Previous Lease.

LR11.2 Easements granted or reserved by this lease over the Property for the benefit of other property

The easements included in clause 1.1 of this lease in the definition of “Incorporated Terms” and specified in Schedule 3 of the Previous Lease.

2

LR12. Estate rentcharge burdening the Property

None.

LR13. Application for standard form of restriction

None.

LR14. Declaration of trust where there is more than one person comprising the Tenant

Not applicable

3

PARTIES

BACKGROUND

AGREED TERMS

The following definitions and rules of interpretation apply in this lease.

Annual Rent: rent at an initial rate of Sixty Eight Thousand Three Hundred and Seventy Pounds (£68,370) per annum and then as revised pursuant to this lease and any interim rent determined under the LTA 1954.

Contractual Term: a term of nine (9) years beginning on, and including 20 October 2017 and ending on, and including 19 October 2026.

Existing Lease: the lease by virtue of which the Tenant holds the Property which is dated [     ] 2016 and made between (1) the Landlord and (2) the Tenant (a copy of which is annexed in Schedule 3 to this lease) and the documents made supplemental to it.

Incorporated Terms: all of the terms, requirements, covenants and conditions contained in the Previous Lease except to the extent that they are inconsistent with the clauses written in this lease and with such modifications as are necessary to make them applicable to this lease and the parties to this lease and as specifically varied by clause 3:

4

Insurance Rent: the rent fourthly reserved in clause 3 of the Previous Lease with such modifications as are necessary to make the provisions applicable to this lease.

Landlord’s Covenants: the obligations in this lease, which include the obligations contained in the Incorporated Terms, to be observed by the Landlord.

LTA 1954: Landlord and Tenant Act 1954.

Plan: the plans attached to the Previous Lease.

Previous Lease: the lease of the Property, which is dated 13 November 2006 and made between (1) the Landlord and (2) Blight & Scoble Limited (3) Piping Hot Networks Limited (a copy of which is annexed in Schedule 2 to this lease) and the documents made supplemental to it.

Property: the property known as Unit B2/3, Linhay Business Park, Ashburton, TQ13 7UP shown edged red on the Plan and as more particularly described (and defined as ‘the Premises’) in the Previous Lease.

Rent Payment Dates: 25 March, 24 June, 29 September and 25 December.

Review Date: means 20 October 2021

Service Charge: the rent thirdly reserved in clause 3 of the Previous Lease with such modifications as are necessary to make the provisions applicable to this lease.

Tenant’s Covenants: the obligations in this lease, which include the obligations contained in the Incorporated Terms, to be observed by the Tenant.

5

VAT: value added tax chargeable under the Value Added Tax Act 1994 and any similar replacement and any similar additional tax.

For the purposes of this lease only, the terms of the Previous Lease shall be varied as set out in Schedule 1 and this lease shall be read and construed accordingly.

6

On the Review Date the Annual Rent shall be reviewed in accordance with the Incorporated Terms.

Following the grant of this lease, the Tenant shall without delay apply to register this lease at HM Land Registry. The Tenant shall ensure that any requisitions raised by HM Land Registry in connection with that application are dealt with promptly and properly. The Tenant shall send the Landlord official copies of the Tenant’s title within one month of the registration being completed.

Within one month after the end of the term (and notwithstanding that the term has ended), the Tenant shall make an application to close the registered title of this lease and shall ensure that any requisitions raised by HM Land Registry in connection with that application are dealt with promptly and properly. The Tenant shall keep the Landlord informed of the progress and completion of its application.

Except as mentioned in clause 2.2, neither the grant of this lease nor anything in it confers any right over neighbouring property nor is to be taken to show that the Tenant may have any right over neighbouring property, and section 62 of the Law of Property Act 1925 does not apply to this lease.

7

A person who is not a party to this lease shall not have any rights under the Contracts (Rights of Third Parties) Act 1999 to enforce any term of this lease.

This lease and any dispute or claim arising out of or in connection with it or its subject matter or formation (including non-contractual disputes or claims) shall be governed by and construed in accordance with the law of England and Wales.

Each party irrevocably agrees that the courts of England and Wales shall have exclusive jurisdiction to settle any dispute or claim arising out of or in connection with this lease or its subject matter or formation (including non-contractual disputes or claims).

This document has been executed as a deed and is delivered and takes effect on the date stated at the beginning of it.

8

Schedule    1    Variations to the Previous Lease

In the definition (in clause 1 of the Previous Lease) of ‘Group Company’ the reference to ‘Section 736 of the Companies Act 1985’ shall be deleted and replaced with ‘Section 1159 of the Companies Act 2006’

The Term, as defined in clause 1 of the Previous Lease, shall be the Contractual Term as defined in this lease.

“Provided that the Tenant shall not be obliged to comply with its obligations in this clause in consecutive years”.

“(Notwithstanding clause 7.4) the Notice shall be served by delivering it by hand or sending it by pre-paid first class post or recorded delivery to the Landlord at the address specified in this lease or at such other address as the Landlords shall have previously notified to the Tenant in writing.”

9

“If this lease terminates in accordance with clause 8.4 then, within fourteen (14) days of the date of such termination, the Landlord shall refund to the Tenant the proportion of the rents reserved by this lease, and \any VAT paid in respect of them, for the period from (and excluding) the date of such termination up to (and including) the last day of the period in respect of which the relevant sum was paid.”

Paragraph 1(3)(iii) of Schedule 5 of the Previous Lease shall be deleted and replaced with the following:-

10

Schedule 2 Previous Lease

11

Schedule 3 Existing Lease

12

13