What is UK MAR?
UK MAR is the UK version of the Market Abuse Regulation, Regulation (EU) No 596/2014 as it forms part of UK law. It prohibits insider dealing, unlawful disclosure of inside information, and market manipulation, and it places disclosure duties on issuers whose instruments are admitted to trading on a UK venue. For a bond issuer, the practical point is timing. The duties begin when the bond is admitted to trading, not when the company next publishes accounts.
Many first-time issuers assume that market abuse rules belong to listed equity businesses. They do not. A private company with one bond on a UK trading venue is an issuer for these purposes, and it carries the same core obligations as a large listed group.
Which issuers are caught
Article 17 of UK MAR applies to issuers who have requested or approved admission of their financial instruments to trading on a UK regulated market. For instruments traded only on a UK multilateral trading facility (MTF) or organised trading facility (OTF), it applies to issuers who have approved trading on that facility or requested admission to a UK MTF. The London Stock Exchange’s International Securities Market is an MTF, so a bond admitted there falls inside the regime.
Debt matters as much as equity. Articles 17, 18, and 19 all refer to financial instruments or to the issuer’s debt instruments, so a bond-only issuer cannot treat them as someone else’s problem.
Article 17: telling the market, as soon as possible
Article 17(1) says that an issuer “shall inform the public as soon as possible of inside information which directly concerns that issuer”. Inside information is information of a precise nature that has not been made public, that relates directly or indirectly to the issuer or its instruments, and that would be likely to have a significant effect on their prices if it were made public. For a bond, that can mean an unexpected covenant breach, a failed refinancing, or a material change in the security package.
The duty has a narrow exit. Under Article 17(4), an issuer may delay disclosure on its own responsibility only if three conditions are met together: immediate disclosure is likely to prejudice its legitimate interests, delay is not likely to mislead the public, and the issuer can ensure the information stays confidential. Miss one condition and the delay is unavailable.
The decision belongs to a named person. A bond issuer that has not decided in advance who judges whether information is inside information will make that decision under pressure, which is the worst time to make it.
Article 18: insider lists
Article 18 requires an issuer to keep a list of the people who have access to inside information. Each entry records the person’s identity, the reason for their inclusion, the date and time they gained access, and the date the list was drawn up. The list must be updated promptly when the reason for inclusion changes, when a new person needs adding, or when someone ceases to have access. It must be kept for at least five years after it is drawn up or updated.
The list is a working document. Lawyers, arrangers, and a trustee’s advisers all become insiders during a live transaction, and the issuer is responsible for recording them.
Article 19: managers’ transactions
Article 19 covers persons discharging managerial responsibilities (PDMRs), such as directors, and the people closely associated with them. A PDMR’s transactions in the issuer’s shares or debt instruments must be notified promptly, and no later than three working days after the transaction date, once a total of EUR 5,000 has been reached within a calendar year. Article 19(11) also bars PDMRs from trading during a closed period of 30 calendar days before the announcement of an interim financial report or a year-end report.
For a company whose only traded instrument is a bond, this surprises directors. A director who buys or sells the company’s bonds is within the rule.
Setting this up before admission
The work is administrative and takes days, not months, provided it starts early. Before the first day of trading, an issuer needs a written disclosure procedure, a named decision-maker for inside information, an insider list template, a PDMR list with each person told of their duties, and a calendar showing the closed periods. These sit alongside the other admission items covered in the UK bond issuance process, from the Legal Entity Identifier (why a bond issuer needs an LEI before listing) to the disclosure document discussed in prospectus or admission document.
Once admitted, the bond’s terms appear on data services such as Bloomberg, and it settles through Euroclear or Clearstream. From that point the market can see the issuer’s announcements immediately, which is why the procedure has to exist on day one.
A change to watch
The Financial Services and Markets Act 2023 provides for the retained EU text to be revoked and replaced by rules made by the Financial Conduct Authority (FCA). Article numbers and wording may therefore move. An issuer should read the current text, or take legal advice, before relying on any provision cited here.
Where The Bond Service fits
The Bond Service helps issuers assemble the admission timetable, including identifier procurement and clearing-system eligibility, so that continuing-obligation procedures are ready before trading starts. More on the listing process is on the page for asset and offering listings.
This article explains how the rules work in outline. It is not legal advice, and it does not recommend any bond or invite investment.
