(1)

MAXIMA PROPCO Vi b.v., a private company with limited liability (besloten vennootschap met beperkte aansprakelijkheid), incorporated and existing under Dutch law, having its registered office (statutaire zetel) in Amsterdam and its office address at Polarisavenue 144, (2132 JX) Hoofddorp, registered with the trade register of the chamber of commerce under number 64593215 (Landlord); and

(2)

nEBIUS b.v., a private company with limited liability (besloten vennootschap met beperkte aansprakelijkheid), incorporated and existing under Dutch law, having its registered office (statutaire zetel) in Amsterdam and its office address at Schiphol Boulevard 165, (1118 BG) Schiphol, Amsterdam, registered with the trade register of the chamber of commerce under number 51515539 (Tenant);

(A)

On 3 December 2024 the Landlord and the Tenant entered into a lease agreement with respect to the Leased Space (Lease);

(B)

Pursuant to clause 13 of the Lease, the Parties have agreed to enter into the Rider in which the items referred to in clause 13 of the Lease will be determined and/or, as the case may be, attached; and

(C)

The Parties have laid down the items referred to in clause 13 of the Lease in this Rider I.

1

Definitions

1.1

Capitalised words and expressions used but not defined in this Rider I including its recitals and the Schedules shall have the same meaning as in the Lease.

2

clause 13 of the Lease

2.1

The table below sets out where the items mentioned in clause 13 of the Lease are determined / dealt with:

3

New energy label

3.1

A copy of the new energy label will be attached later to this Rider I (after the Tenant has realized its fit-out) as Schedule 1.

4

number of square meters and rental price

4.1

In accordance with clause 2.5 of the Lease, the final number of sq. m. LFA of the Office Space and the Bike Storage as part of the Leased Space, and thus the exact size of the Office Space and the Bike Storage as part of the Leased Space, has been determined on the basis of the Measurement Report, which is attached to this Rider I as Schedule 2.

4.2

According to the aforementioned Measurement Report and in deviation of clause 2.1 of the Lease, the actual number of sq. m. LFA Office Space and Bike Storage leased by the Tenant is as follows (apart from the Parking Spaces):

4.3

Since the number of sq. m. LFA following from the Measurement Report differs from the number included in clause 2.1 of the Lease, the rental price for the Office Space and the Bike Storage will be adjusted in accordance with the number of sq. m. LFA following from the Measurement Report.

4.4

The adjusted rental price is as follows. In deviation of clause 5.8 of the Lease the total initial annual rent for the Leased Space on the Commencement Date is EUR [*] (in words: [*]), excluding the

4.5

For each payment period of [*] calendar months, the following amounts apply on the Commencement Date:

5

Commencement date

5.1

The actual Commencement Date of the Lease is 1 July 2025.

6

Goods and services

6.1

The list with goods and services to be supplied by or on behalf of the Landlord, including the associated advance payment for service charges, is attached to this Rider I as Schedule 3.

7

Handover report office floors

7.1

The signed Handover Report Office Floors is attached to this Rider I as Schedule 4.

8

Handover report Remaining Landlord Improvements

8.1

The signed Handover Report Remaining Landlord Improvements is attached to this Rider I as Schedule 5.

9

Technical drawings

9.1

The document list of the approved technical drawings (werktekeningen) is attached to this Rider I as Schedule 6.

10

rent free period

10.1

Parties have agreed that no part of the rent free period as included in the Lease will be converted in a CAPEX-contribution (and that thus clauses 12.19 and 12.20 of the Lease are no longer applicable).

11

Miscellaneous

11.1

All terms and conditions of the Lease and the applicable General Conditions shall apply in so far as the Parties have not expressly added, adjusted and/or amended the provisions of the Lease and/or

11.2

Any communication in connection with this Rider I shall be in writing and unless otherwise stated, may be given in person, by email or post at the addresses stated above.

11.3

To the extent permitted by law, no Party to this Rider I may terminate, dissolve (ontbinden) or nullify (vernietigen) this Rider I.

11.4

This Rider I may be signed in counterparts.

11.5

This Rider I is governed by Dutch law and the court of Amsterdam, the Netherlands shall have exclusive jurisdiction and each addressee to this Rider I irrevocably submits to the jurisdiction of such court.