Sell-Side M&A: The Company Sale Seen from the Seller Side

Sell-side M&A means the sale of a company seen from the seller side — as opposed to the buy-side, which advises the buyer. A sell-side adviser works exclusively for the seller: preparing the business, approaching buyers, creating competitive tension and negotiating the best achievable outcome. Which side your adviser stands on helps determine the price.

For owners running an actual process, our approach to selling your company sets out how the mandate works.

The term is less current in German-speaking markets than in English, but it describes exactly what a sale is about. This article separates sell-side from buy-side, walks through a mandate in seven steps, compares the three common process types and lists the points a seller should check before signing a mandate.

Sell-side and buy-side — the difference

An M&A transaction has two sides, and an adviser only ever represents one of them.

	Sell-side	Buy-side
Client	seller / owner	buyer / investor
Objective	the best achievable sale	the right acquisition at the right price
Task	preparation, buyer approach, competition, negotiation	search, assessment, price discipline
Interest	a high price and good terms for the seller	a low price and certainty for the buyer

The interests are directly opposed. That is why the person on the seller side should be someone who pursues your objectives and nobody else.

How robust the resulting figure is depends on the method — see company valuation.

How many owners face the sell-side question?

The Institut für Mittelstandsforschung Bonn (IfM Bonn) estimates that around 186,000 companies in Germany are due for transfer between 2026 and 2030 (IHK Stuttgart summary of IfM Bonn, Daten und Fakten No. 37, retrieved 14 October 2026). In the institute's meta-analysis of studies from roughly the last 40 years, a good half of transfers in family businesses went to the family, 17 % to employees and 29 % to external buyers; family handovers lose slight weight in more recent studies.

Owners' preferences are shown by the KfW Succession Monitoring 2025: 55 % of SME owners planning a succession would like a family member as successor, 42 % an external buyer, 28 % employees and 24 % co-owners (multiple answers possible; KfW Fokus Volkswirtschaft No. 526, January 2026). Anyone selling externally needs someone to build the buyer universe and run the process. That is the sell-side task. How many of these sales actually run through an adviser has not been measured.

What a sell-side adviser does

The core task is not to find a single interested party but to create genuine competition. The adviser prepares the business and the documentation, identifies suitable buyers, approaches them discreetly and anonymously, and takes them through a structured process. Only once several serious parties are in play does the seller have a real negotiating position. How that process runs step by step is set out in the process of a company sale.

A sell-side mandate in seven steps

Step	What happens	Further reading
1. Preparation	normalise the numbers for private and one-off items, gather documents, settle the valuation frame	Preparing a company sale
2. Buyer universe	collect strategic buyers, financial investors, management and successors; fix an exclusion list	Strategic buyer or financial investor
3. Anonymous approach	short profile without the company name; identity disclosed only after a signed confidentiality agreement	NDA in a company sale
4. Information documents	detailed presentation for qualified parties	Information memorandum
5. Indicative offers	non-binding price indications from the parties	Indicative offer
6. Review	management presentation, letter of intent, due diligence, possibly vendor due diligence	Letter of intent, Due diligence, Vendor due diligence
7. Binding offer and contract	negotiation, purchase agreement, signing, closing	Company purchase agreement, Earn-out

The sequence is a pattern, not a rule: depending on size and buyer group, steps are combined or taken in a different order.

Which process types exist

Process	How it runs	Strength	Risk
Broad auction	many buyers approached, several bidding rounds	maximum competition	more effort, higher confidentiality risk
Limited (controlled) auction	selected, strategically fitting buyers	confidentiality, better fit	smaller buyer group, less competition
Bilateral negotiation	one buyer, often with exclusivity	speed and discretion	no competition; the price is supported only by the seller's alternatives

Which process fits depends on company size, sector, confidentiality needs and buyer group. For owner-managed companies, a limited auction is in our practical assessment often the middle path; no statistic is available on this.

The mandate: what sellers should check before signing

• Exclusivity and term. How long does the mandate bind, and does it cover all buyers or only those introduced by the adviser?
• Remuneration. Fixed part, success-based part, minimum fee: every component belongs in writing before the work starts. How costs are composed is set out in what an M&A adviser costs.
• Tail clause. It settles whether the adviser is still paid if, after the mandate ends, a buyer purchases who was approached during the mandate. The period and the buyer group (a named list) should be clearly defined.
• Exclusion list. Competitors or specific buyers who must not be approached belong in the mandate.
• Disclose interests. The adviser's relationships with banks, funds or buyers belong on the table before the mandate is awarded.
• Legal nature. Under a brokerage contract, the fee arises under section 652(1) of the German Civil Code (BGB) only if the contract comes about as a result of the introduction or mediation. Many M&A mandates are mixed contracts with a fixed and a success component; the classification depends on the drafting and belongs with a lawyer.

How to choose an adviser is covered in choosing an M&A adviser.

Why independence matters on the sell-side

A sell-side adviser with no interests of their own negotiates harder for you. Anyone who earns from a particular group of buyers, from tied products or from quick completions has a conflict of objectives. What makes a good adviser, and how to recognise one, is set out in what an M&A adviser does.

According to IGCP's assessment, a company sale typically takes 3 to 12 months, preparation included (practical assessment, not a statistic, no guarantee) — IGCP runs the sell-side process independently and without conflicts of interest, including cross-border (for example net-haus to SINGU, Poland, 2025).

Status of the details and sources: 14 October 2026.

FAQ

What does sell-side M&A mean?

The sale of a company from the seller point of view: the advice and process management that ensure an owner sells the business on the best achievable terms.

What is the difference between sell-side and buy-side?

The sell-side advises the seller, the buy-side advises the buyer. The two pursue opposing objectives — a high price versus a low one. An adviser only ever represents one side.

Why should the sell-side adviser be independent?

Because they negotiate the price on your behalf. Anyone who also earns from a particular group of buyers, or from quick completions, has a conflict of interest that can work against the seller.

How long does a sell-side process take?

According to IGCP's assessment, typically 3 to 12 months, preparation included (practical assessment, not a statistic, no guarantee); with good preparation and a tight process it moves faster. The range is set out in how long a company sale takes.

Why does competition among buyers matter so much?

A single interested party sets the price. Several serious parties in a structured process give the seller alternatives — and alternatives are what turn a negotiation in the seller favour, on price and on terms alike.

Can a sell-side process work across borders?

Yes. For specialised businesses the natural buyer is often outside the home market. A cross-border process requires preparation and a buyer universe that is genuinely international rather than merely regional.

Which process types exist in a company sale?

Broad auction, limited (controlled) auction and bilateral negotiation. They differ in competition, confidentiality and effort; which one fits depends on size, sector and buyer group.

What should I check in the mandate agreement?

Exclusivity and term, the complete remuneration structure, a tail clause with a clear buyer group, the exclusion list and disclosure of conflicts of interest. A lawyer reviews the legal classification of the contract.

How many companies in Germany are due for transfer?

IfM Bonn estimates around 186,000 transfers for 2026 to 2030. How many of them end as a sale to external buyers has not been measured; the institute's meta-analysis gives 29 % external buyers for family businesses.

Sell-side, buy-side, mandate: the roles in the process are explained briefly in the IGCP M&A glossary.

A company sale is the most important transaction of an entrepreneurial life. Take independent, discreet advice — IGCP Capital Partners GmbH. → igcp.at