Markets
Luxembourg: capital autorisé under the Law of 1915, and why the venue where the shares trade decides the rest
A Luxembourg société anonyme can issue a convertible priced off future market prices and can draw a standby equity facility against its capital autorisé, because Luxembourg company law fixes no conversion formula, no reference-price floor and no maximum discount. The qualification is that Luxembourg is usually the incorporation and not the trading venue, and the venue's rules govern.
Key takeaways
- Two layers, one deal. Luxembourg supplies the corporate authority; the exchange supplies the placement capacity, the discount limit and the resale route.
- LuxSE is a debt house. It describes itself as the world's leading venue for the listing of international debt securities. It is not where a small-cap equity line usually trades.
- The capital autorisé is the drawdown mechanic. The articles fix a maximum authorised capital and may let the board issue within it and limit the droit préférentiel de souscription. EU law caps that delegation at five years, renewable.
- Par is the only hard floor. No issue below nominal value or, failing that, accountable par (Directive (EU) 2017/1132, Article 47). Luxembourg SAs commonly carry a very low accounting par, so it bites less than in Germany or Austria.
Why the first question is where the shares trade
Luxembourg is used constantly as the holding jurisdiction for cross-border groups and much less often as the place their equity is quoted. The Luxembourg Stock Exchange runs an EU regulated market, the exchange-regulated Euro MTF, and the Securities Official List, which registers securities without admitting them to trading at all. Its own description of its franchise is international debt.
A conversion price expressed as a discount to a volume weighted average price is only as good as the line it is measured against, and a thin quote makes the reference meaningless. So the working assumption for a Luxembourg société anonyme raising this way is that the equity is admitted elsewhere, most often Euronext Amsterdam, Brussels or Paris, or Nasdaq, and that the rules of that market do the commercial work.
What the Law of 1915 does not do
The Law of 10 August 1915 on commercial companies, modernised in 2016, does not prescribe how a conversion price is set: no mandatory reference period, no minimum percentage of a preceding average, no ceiling on the discount. Convertible instruments are treated as instruments giving access to capital, with the capital-increase rules applied to their issue and the increase taking effect on conversion. The corporate authority therefore has to be in place when the instrument is issued, not assembled again at each conversion.
Shareholders have a preferential subscription right on a cash increase, and the official guidance for the société anonyme puts it plainly: on a capital increase the shareholders are granted preferential subscription rights, except where a justified subscription limit has been decided at an extraordinary general meeting. Against a facility, that is the design problem in one line. Get the limitation decided once, in advance, in wording that covers every future tranche.
The capital autorisé is the facility
The articles may fix an authorised share capital and empower the board to issue within it. Where they also authorise the board to restrict the preferential subscription right, the board can issue on demand, in tranches, without reconvening shareholders. That is the standing authority a drawdown facility needs, and a large part of why so many cross-border groups list a Luxembourg topco. The clock is EU-harmonised rather than Luxembourgish: Article 29(2) of Directive 2012/30/EU, now codified in Directive (EU) 2017/1132, allows an authorisation to increase subscribed capital up to a stated maximum for not more than five years, renewable, and applies the same procedure to securities convertible into shares.
| Question | Answered by Luxembourg company law | Answered by the trading venue |
|---|---|---|
| Issue without a shareholder vote? | Yes, within the authorised capital | Approval may bite above a capacity threshold |
| May the conversion price float? | No formula, floor or discount cap | Discount and minimum pricing rules live here |
| Is there a price floor? | Par, tested at each conversion | Some venues add a minimum price |
| When can the investor sell? | No Luxembourg holding period | Prospectus, resale registration or Rule 144 |
| Structural comparison only. Not an offer, a quote, or a rate card. | ||
The par floor, and why it is softer here
The one price limit Luxembourg cannot waive comes from EU company law. Article 47 of Directive (EU) 2017/1132 provides that shares may not be issued at a price lower than their nominal value, or, where there is no nominal value, their accountable par. On a refixing conversion price that is live, because it is tested on the day of each conversion rather than at signing.
What differs is the headroom. Luxembourg SAs are routinely constituted with a very low accounting par. The same test in Germany or Austria, where a higher nominal value is common, can stop a conversion outright and force a capital reduction first. Same rule, different room.
General information, not legal advice. This page deliberately cites no article numbers of the Law of 10 August 1915: the consolidated official text could not be read for this note, so the principles are stated without them. Take advice from qualified Luxembourg counsel and from counsel in the listing jurisdiction.
This verdict is provisional. The permissive reading rests on the EU capital framework rather than on a Luxembourg primary text read for this note, and whether Luxembourg caps authorised capital as a proportion of issued capital was not established — a load-bearing difference against Belgium, Germany and Austria. This page therefore makes no machine-readable capability claim for Luxembourg, and the answer for any given issuer is in any event set by the rules of the market its equity trades on.
What to settle before signing
Which exchange the shares are actually admitted to; how much unused headroom is left in the authorised capital and when it expires; whether the articles let the board limit the preferential subscription right in wording that reaches conversion shares; and how far the price would have to fall before the par floor blocks a conversion.
Where a facility is the answer, the mechanics are on equity facilities for listed issuers and the instrument on convertible notes for listed issuers. A Luxembourg holding company quoted on Nasdaq should read Rule 144 and restricted securities first: that analysis, not Luxembourg law, decides when the investor can sell. Send the listing venue and the authorised capital clause.
Primary sources
- Directive (EU) 2017/1132 — Article 47, the par floor
- Directive 2012/30/EU — Article 29(2), the five-year authorisation
- Prospectus Regulation, consolidated — Article 1(5) 30% exemption
- Guichet.lu — the Luxembourg société anonyme
- Luxembourg Stock Exchange — what it lists
Financing a Luxembourg-incorporated issuer: frequently asked questions
Does Luxembourg law cap the discount on a conversion price?
No. The Law of 10 August 1915 on commercial companies sets no conversion formula, no reference-price floor and no maximum discount for a société anonyme. The only company-law floor is the prohibition on issuing shares below nominal value or, where there is none, below accountable par. Any percentage limit on the discount comes from the rules of the market where the shares trade, not from Luxembourg.
Which rules govern a Luxembourg SA listed on Euronext or Nasdaq?
Both, and they answer different questions. Luxembourg law decides whether the board may issue at all and on what authority. The venue decides placement capacity, any discount limit, whether a shareholder vote is required and how the shares reach the market. A structure that clears Luxembourg company law can still fail the venue's capacity rule.
What is the capital autorisé and why does a drawdown facility need one?
It is a maximum share capital stated in the articles up to which the board may issue new shares without returning to the general meeting. A facility drawn in tranches needs exactly that: standing authority to issue on demand. EU company law limits the delegation to five years, renewable for further five-year periods.
Are shares issued on conversion freely tradable?
There is no Luxembourg holding period. On an EU regulated market the gating item is the prospectus: admission of securities fungible with a listed line is exempt below 30% of the number already admitted over 12 months, raised from 20% by Regulation (EU) 2024/2809. Where the listing is in the United States, Rule 144 and a resale registration statement govern instead.
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Where is the equity actually quoted?
That decides the rules. Luxembourg then supplies the capital autorisé, delegated for five years at most, and the board's power to limit the droit préférentiel de souscription where the articles say so. Send the listing venue, the authorised capital clause and the accounting par per share.