Securities are valued by the company, under the supervision of the statutory auditor, at least once every financial year and whenever an event or series of events occurring during a financial year is likely to lead to a substantial change in the value of the company’s shares.
In addition, a valuation is carried out by experts at least every five years. This valuation is optional for the companies mentioned in the third paragraph of article L. 3332-20 whose shares are valued in accordance with the second paragraph of the same article.