Bidder / offeror meaning

The party that puts forward terms—by bid or offer—to enter a contract, acquire assets or securities, or win a procurement competition. The expression is descriptive and used across contexts rather than a single statutory definition. In public takeovers and other M&A, the bidder (also called the offeror) is the prospective acquirer under the City Code on Takeovers and Mergers (UK) and the Irish Takeover Rules. Status as bidder/offeror triggers announcement and disclosure obligations, a regulated timetable, restrictions on deal protection, and potential mandatory offer requirements on crossing control thresholds. In public procurement, a bidder is the supplier submitting a tender. Legislation commonly uses the term economic operator (for example, under the Public Contracts Regulations 2015 in England & Wales, Scotland and Northern Ireland, and the Irish procurement rules). Bidders are subject to selection and award criteria, standstill (Alcatel) periods and specific remedies. In contract law and auctions, the offeror or bidder is the person making the offer or bid; a binding contract arises on acceptance. Usage and meaning are broadly consistent across England & Wales, Scotland, Northern Ireland and Ireland, though preferred terminology varies (bidder, offeror, tenderer, economic operator). Related terms include purchaser and acquirer.