What are concert parties required to do in the context of a takeover?

In the context of a takeover, concert parties are required to disclose their aggregated stakes. This is essential because concert parties, or groups of individuals or entities that work together towards a common goal in a takeover situation, can significantly influence the outcome of the bid. By disclosing their combined ownership, it enables regulators and other stakeholders to assess the true level of control exerted by these parties over the target company. Transparency in ownership is vital to ensure fairness in the takeover process and to prevent any potential manipulation or conflicts of interest.

The other options do not align with the regulatory requirements concerning concert parties in a takeover context. While submitting a joint bid may happen as part of a strategic approach, it is not mandated purely due to the fact that parties are working together. Voting against a takeover is irrelevant to the requirement of aggregation since concert parties might support or oppose depending on their strategic interests. Similarly, seeking independent financial advice is beneficial but not a regulatory requirement tied to their status as concert parties. Hence, the disclosure of aggregated stakes is the primary obligation imposed on concert parties during a takeover.