Board of Statutory Auditors
The Board of Statutory Auditors is responsible for monitoring:
- compliance with the laws and Bylaws;
- respect of the principles of sound management;
- the adequacy of the Company’s organization, for issues under its jurisdiction, and of the administrative-accounting system and the reliability of this system to present accurately the results from operations;
- with the support of the Board of Directors, the Independent Auditors and the Internal Control Officer, the execution by the Company of atypical and/or unusual intercompany, related - party or third-party transactions.
Pursuant to the Bylaws, the Board of Statutory Auditors is comprised of three Statutory Auditors and two Alternates.
The Board of Statutory Auditors is elected based on slates of candidates filed by shareholders in accordance with the modalities and the limitations set forth in the Bylaws.
In order to be elected, Statutory Auditors must meet the requirements of the relevant laws, the Bylaws and other applicable provisions.
The Shareholders’ Meeting held on April 29, 2026, appointed the new Board of Statutory Auditors of the Company which will remain in office until the Shareholders' Meeting called to approve the Financial Statements as at December 31, 2028 takes place.
The composition of the newly appointed Board of Statutory Auditors complies with the current provisions concerning gender percentages.
Board of Auditors
Mauro Lonardo - Chairman
He is Statutory Auditor (Standing Member of the Board of Statutory Auditors) of Webuild since 29 April 2026.
A Chartered Accountant and Statutory Auditor, with over twenty-five years of professional experience, he provides corporate, legal, and tax advisory services, with a particular focus on corporate governance, internal control systems, extraordinary transactions, and assistance to internationally oriented groups.
He has extensive experience as a member of corporate control bodies, including those of listed and large companies, with specific expertise in the infrastructure sector, public services, media, financial and insurance services, and transportation and energy.
He is a speaker and lecturer in training initiatives dedicated to corporate governance and the role of control bodies, with particular reference to internal control systems, ESG matters, and sustainability reporting.
Pierumberto Spanò - Standing Statutory Auditor
He is Standing Statutory Auditor of the Board of Statutory Auditors of Webuild since April 29, 2026.
He is a Chartered Accountant since 1988 and is registered in the Register of Statutory Auditors since it was founded. He has a consolidated experience in company-related and corporate and tax consultancy matters, with regard to both extraordinary and ordinary operations (merges, demergers, liquidations, etc.). He developed skills in his own specialization area, particularly in the construction and civil engineering sectors, that of infrastructure, regulated markets, transport and gas stocking, air transport and social security.
He has covered and covers corporate roles (Chairperson of the Board of Statutory Auditors, Statutory Auditor, Board Director, ODV Chairperson, etc.) in companies, even listed ones and ones with shares in listed ones, and in Social Security bodies. He has taught in some post-graduate academic schools for company-related, corporate and fiscal.
Marcella Caradonna - Standing Statutory Auditor
She has served as a Statutory Auditor on Webuild’s Board of Statutory Auditors since April 29, 2026.
A Chartered Accountant and Statutory Auditor, she is a Contract Professor at the Università Cattolica del Sacro Cuore in Milan. She possesses extensive experience in management, corporate, and organizational consultancy, with a specific focus on management control systems, Legislative Decree 231 models, and data protection. She has held high-ranking institutional roles, including serving as the President of the Milan Order of Chartered Accountants and Accounting Experts until February 2026.
She holds and has held numerous positions as Chairperson and member of Boards of Statutory Auditors, Director, and member of Supervisory Bodies (OdV) for leading listed companies, public entities, and foundations. Currently, she is a member of the Board of Statutory Auditors for ENI SpA and Corneliani SpA, an Independent Director at Banca Valsabbina Soc. Coop., and a member of the Board of Auditors for SIAE. An author of several publications on corporate law and finance, she is also a freelance journalist contributing to economic news outlets and a regular speaker at scientific conferences and seminars.
Guido Arrigoni - Alternate Statutory Auditor
He is Alternate Statutory Auditor in the Board of Statutory Auditors of Webuild since April 29, 2026.
He has served as an Alternate Auditor on Webuild’s Board of Statutory Auditors since April 29, 2026.
A Chartered Accountant and Statutory Auditor since 2009, he provides tax consultancy to various companies, including those operating in motorway concessions, metro lines, railway construction, major infrastructure projects, and the renewable energy sector.
His expertise focuses particularly on extraordinary corporate transactions, expert assessments and valuations, project financing, and economic-financial plans. He also provides ongoing tax and corporate advisory services and serves as a member of the Board of Statutory Auditors (Control Bodies) for several joint-stock companies.
Giulia Pusterla - Alternate Statutory Auditor
She has served as Alternate Statutory Auditor on Webuild’s Board of Statutory Auditors since 29 April 2026.
A Chartered Accountant since 1985, she has been registered in the Register of Statutory Auditors since its establishment.
She is the owner of a professional practice specializing in business crisis management and corporate recovery, corporate governance, and corporate and tax advisory services.
She has held and currently holds corporate offices - including Chair of the Board of Statutory Auditors, Standing Statutory Auditor, Director, and Chair of board committees - at various companies, including listed companies.
She serves as Extraordinary Commissioner in extraordinary administration proceedings, as well as court-appointed commissioner and liquidator, bankruptcy trustee, and delegated sales officer for the Court of Como. She also acts as court-appointed expert for judges and public prosecutors at the Public Prosecutor’s Offices of Como and Milan.

