4.3.32Independent Auditor’s Fees and Services

Fees included in other operating costs related to PwC, the 2023 and 2022 Company’s external independent auditor, are summarized as follows:

in thousands of US$

2023

2022

Audit of financial statements

3,789

2,883

Out of which:

- invoiced by PwC Accountants N.V.

2,367

1,849

- invoiced by PwC network firms

1,422

1,034

Tax advisory services by PwC network firms

34

66

Other assurance services

153

165

Total

3,976

3,114

In both 2023 and 2022, the other assurance services were mainly related to the review of the Company sustainability report. No other non-assurance services were conducted.