01 ยท Foundations
What M&A is
An M&A banker sits between a buyer and a seller and runs the process that moves a company from one owner to another. The bank does not put up its own money. It advises: it values the business, finds and approaches counterparties, manages due diligence, and negotiates terms alongside the lawyers. Most of the fee is a success fee, paid only when the deal closes.
Share deal vs asset deal
Every M&A deal is structured as either a share deal or an asset deal. The choice drives tax, complexity and risk.
Share deal
The buyer purchases the shares of the company. They get the whole legal entity, every contract, asset and liability comes with it.
- Simpler legally: one transfer of shares; contracts and permits stay with the entity.
- Tax-friendly for the seller: for a Swiss-resident individual, capital gains on the sale of private shares are generally tax-free[7]. That's why sellers usually prefer share deals.
- Faster execution when diligence is clean.
- Buyer inherits the past: tax history, litigation and hidden liabilities all come along.
- No tax step-up: buyer cannot increase the depreciable base of the assets, so no extra tax depreciation shield.
- Securities transfer tax may apply: 0.15% for Swiss / 0.3% for foreign shares if a Swiss securities dealer is involved[8].
Asset deal
The buyer purchases specific assets and liabilities, not the shares. Used when the buyer wants to leave certain risks behind, or when only a part of a business is being sold (a carve-out).
- Cherry-pick the perimeter. Buyer chooses which assets and liabilities transfer.
- Tax step-up: buyer can depreciate the acquired assets at their new value and may set off interest on acquisition debt against the acquired business's income[7].
- VAT generally applies (currently 8.1%) on transferred goods and goodwill; a notification procedure can apply between Swiss VAT-registered parties[7].
- Real estate complications: real estate transfer tax, notary fees and land register fees apply if real estate is transferred; rates vary by canton[7].
- Heavier execution: every contract and permit may need to be re-papered or consented to.
- Tax loss carry-forwards stay with the seller: buyer doesn't inherit them.
Which is more common in Switzerland?
Most Swiss private M&A is done as a share deal. The driver is tax: Swiss-resident individuals selling privately held shares typically benefit from a capital gains exemption, while an asset deal usually triggers VAT and (where real estate is involved) cantonal real estate transfer and gains taxes. Asset deals dominate in carve-outs, distressed situations, or when the buyer needs a clean break from inherited liabilities.[7]
Enterprise value vs equity value
Enterprise value (EV) is the value of the operating business, regardless of how it's financed. Equity value is what shareholders actually receive. You move between them through the equity bridge: equity value = EV โ net debt, plus a few other items (pension deficits, minority interests, excess cash, and so on). Almost every pricing argument is really an argument about the bridge.
Step 01 ยท Winning the mandate
The RfP and the pitch
Before a bank wins a mandate, it pitches. Sometimes the client runs a formal Request for Proposal (RfP): often called a beauty contest: and invites several banks to compete; sometimes a single bank pitches an idea unsolicited.
Switzerland in particular
In Switzerland a meaningful share of mandates come from long-term relationships rather than a formal RfP. A bank that has covered a CEO or owner for years can be appointed directly, without a beauty contest. When an RfP does run, typically 2โ5 banks are invited, on a tight timeline (often 5โ30 days), and things move fast from there.
Typical pitch book structure
The pitch book is the bank's argument for why it should run the deal. Two sections are worth a deeper look afterwards: valuation and strategic / financial impact. We expand both below.
| # | Section | What's inside |
| 01 | Executive summary | The headline view and what the bank recommends. |
| 02 | Situation & objectives | The bank's read of the client's position and goals. |
| 03 | Market & sector context | Relevant trends, recent comparable deals. |
| 04 | Valuation Expanded below | What the business or target is worth, with the methods used. |
| 05 | Strategic & financial impact Expanded below | Synergies, accretion / dilution, pro forma combined financials (buy-side). |
| 06 | Financing considerations | Debt capacity, rating impact, deleveraging path (where relevant). |
| 07 | Potential counterparties | Buyer or target list, ranked by fit and likelihood. |
| 08 | Process & timeline | How the deal would run and how long it takes. |
| 09 | Why us | The bank's credentials, "tombstones" and the team. |
| 10 | Fees | The proposed economics. |
Valuation methods typically used in the pitch
Bankers triangulate across several methods rather than relying on any single one. The mix depends heavily on the sector and the type of business. A few methods are seen in almost every pitch:
Trading comparables ("trading comps")
Value the company by how similar listed companies trade. Typical multiples are EV/EBITDA, EV/EBIT, P/E or EV/Revenue. (EV = enterprise value; EBITDA = earnings before interest, tax, depreciation and amortisation.)
Transaction comparables
Look at multiples paid in recent comparable deals. Useful because they capture any control premium a buyer paid to take over the company.
Discounted Cash Flow (DCF)
Values the business off its own projected future cash flows, discounted back to today at the cost of capital.
LBO analysis (the "floor")
Leveraged Buyout analysis: what a financial sponsor (typically a private equity firm) could pay using debt financing and still hit its return target. Often shown as a floor valuation in sell-side pitches.
Broker target prices
Sell-side equity analyst price targets for a listed target. A useful public-market sanity check.
Historical trading & VWAPs
For a listed target: 52-week high/low, all-time high, and Volume-Weighted Average Prices (VWAPs, e.g. 30-day, 60-day, 90-day) to show where the market has actually been transacting.
Sector-specific methods come into play where they fit: sum-of-the-parts for conglomerates, net asset value (NAV) for real estate or holding companies, regulatory asset base (RAB) for utilities, and so on. The list above is a typical starting point, not the only methods used.
Swiss takeover premium
In Swiss public M&A, the average control premium paid in public takeovers sits around 25โ35% over the undisturbed share price, looking at decades of Swiss deal data. The premium captures the value of control: the ability to direct strategy, capital allocation and management. Trading comps don't price this in. Transaction comps do, which is why they typically print higher.
What "comps" really are
Trading comparables value a company by how similar listed companies trade right now. Transaction comparables look at prices paid in similar past deals. A DCF values the business off its own projected future cash flows. Together they bracket a sensible range; the goal is to triangulate, not to find one "right" answer.
Strategic & financial impact (buy-side)
On a buy-side pitch the bank typically also shows the deal's effect on the acquirer, four blocks that go together:
What a strategic & financial impact analysis covers
01 ยท Synergies
Where value is created
Four types: revenue (cross-sell, pricing), cost (overlapping functions, procurement), capex (combined investment plans), and financing (lower cost of capital from a larger group).
02 ยท Accretion / dilution
EPS impact
Does the deal increase or decrease the acquirer's earnings per share in year one, year two, year three? The "EPS bridge" is the standard chart.
03 ยท Pro forma financials
The combined picture
What the combined group's P&L, balance sheet and credit metrics look like once synergies are layered in.
04 ยท Financing & rating
How it's funded
Mix of cash, debt and equity. Rating-agency impact. How fast leverage comes back down, the deleveraging path.
You're a third of the way in
The rest of the Bible covers the engagement letter, the full deal execution, both Swiss timelines, the takeover thresholds, and 15 things bankers watch.
Steps 2 to 6 of the M&A process (engagement letter, bank-side prep, info memo, due diligence, pricing & SPA), the private deal calendar, the public deal calendar, the four Swiss takeover thresholds (3% / 33โ
% / >90% / >98%) with opting-out and the minimum/best price rules, plus the accordion of 15 things you only learn on the floor.
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Step 02 ยท Hiring the bank
The engagement letter
Once the pitch lands, the engagement letter is the contract that formally hires the bank. It's signed before any real work starts. Its main topics:
Scope of services
Exactly what the bank will and won't do. Advisory only, never a financing commitment unless explicitly stated.
Fees
M&A fees are almost entirely success-based. A success fee tied to transaction value, often with incentive tiers above a threshold price, plus discretionary uplifts the client can grant at closing. Milestone or announcement fees can apply on large public deals. Retainers and monthly work fees are rare in M&A.
Exclusivity & term
Whether the bank is the sole adviser, how long the mandate runs, and a tail period: the bank still earns its fee if the client closes with a buyer the bank introduced, even after the mandate ends.
Expenses
Reimbursement of out-of-pocket costs: travel, meals, printing, external research. Data room and external legal counsel are usually contracted and paid by the client directly, not via the bank.
Indemnity & liability
The client indemnifies the bank against third-party claims arising from the engagement. The bank's own liability is capped (often at the fees received).
Confidentiality & conflicts
Information handling rules and how the bank manages other clients active in the same sector.
Practice, not regulation: engagement letter contents are market standard, not set by Swiss law. Fee levels, tail length and incentive structure are negotiated deal by deal.
Step 03 ยท After the bank is hired
Bank-side preparation & admin
With the engagement letter signed, the bank's internal machinery starts. Most of the items below run from this point until closing, they're the operating system of the deal.
Internal risk / KYC assessment
Before the bank can act, it clears the client and the deal through its own compliance and risk committee. Know-Your-Customer (KYC) checks on the client, sanctions screening, conflicts check and reputational review.
Working Group List (WGL)
The master contact sheet of everyone on the deal across all advisers: names, roles, firms, emails, mobiles. Updated weekly.
Workstream tracker
A live status grid of every workstream, owner, deadline and open issue. The single source of truth for project-management calls.
Weekly all-hands update calls
Deal team plus all advisers sync on progress and blockers. Often supplemented by daily stand-ups for the bank's own team as signing approaches.
Bank's internal DD on its client
Separate from the deal due diligence on the target. To meet ongoing KYC and risk obligations, the bank periodically refreshes its own checks on its client throughout the engagement: bring-down DD (a focused refresh of key findings just before major decision points like signing or going public), management DD (working sessions with client management) and auditor DD (calls with the client's auditors to confirm accounting and surface unresolved points).
Commissioning third-party stakeholders
If the client doesn't already have relationships in place, the bank helps set up the wider deal team: vendor DD providers (financial, tax, commercial, legal), the VDR provider (data room), W&I insurance broker, legal counsel and any sector-specific specialists (technical, environmental, IT). The bank stays the orchestrator; the client signs the engagements directly.
Process letter (sell-side)
Sent to buyers alongside the IM. Sets the bid mechanics: when offers are due, what they must contain (price, conditions, financing) and the rules of the auction.
Other parties around the table
Beyond the DD providers (financial, tax, commercial, legal, listed in Due diligence below), a few other roles staff a live deal.
Legal counsel
Drafts and negotiates the SPA / offer documents, runs legal DD, handles regulatory and merger-control filings. On public deals the lawyers liaise with the TOB.
Review body (public deals only)
On a Swiss public offer, a TOB-recognised review body (an audit firm or recognised securities specialist) confirms the offer complies with takeover law and that financing is in place[3].
Communications adviser
Especially important on public deals: drafts press releases, handles media strategy, prepares Q&A for analysts, employees and the press.
Investor relations (IR)
The buyer's or target's IR team, where listed. Manages the relationship with shareholders and analysts before, during and after announcement.
Accounting / structuring adviser
Where the deal involves complex accounting (e.g. purchase price allocation, IFRS treatment) or tax-driven structuring through an SPV (special purpose vehicle).
W&I insurance broker
If warranty & indemnity insurance is being used, a specialist broker (Marsh, WTW, Aon, Howden and others) places the policy with insurers.
Strong Swiss legal counsel in M&A
The Swiss law firms most often seen on Swiss M&A, across private deals and public takeovers:
Homburger
Zurich. Full-service Swiss corporate firm, deeply embedded in Swiss public takeovers and large private M&A.
Lenz & Staehelin
Zurich / Geneva / Lausanne. Switzerland's largest law firm; broad M&A, tax and regulatory practice.
Bรคr & Karrer
Zurich / Geneva. Long-standing M&A franchise; one of the most-cited firms on Swiss takeover practice.
Niederer Kraft Frey
Zurich. NKF, known for capital markets and M&A, with a strong public-takeover track record.
Walder Wyss
Zurich and other offices. Active across mid-market and large M&A and real estate transactions.
Schellenberg Wittmer
Zurich / Geneva. Full-service corporate / M&A practice.
Baker McKenzie Switzerland
Global firm with Swiss offices; cross-border M&A focus.
Advestra
Zurich. Newer boutique that has quickly become prominent in Swiss capital markets and M&A.
Step 04 ยท Marketing the deal
The Information Memorandum (IM)
On a sell-side, the bank writes an Information Memorandum (also called the Info Memo, IM, or in US practice the CIM, Confidential Information Memorandum). It is the main marketing document sent to buyers after they have signed an NDA. It's preceded by a short, anonymised teaser that goes out first to gauge interest, and accompanied by a separate Process Letter that sets out the bid mechanics and timetable.
A typical IM runs 40โ60 pages and is structured as an argument. Each section answers a question the buyer is already asking.
How an IM is typically structured
- Disclaimer & important notice: confidentiality, no-reliance, forward-looking-statements language. Short, but it's what makes this a confidential marketing document rather than a public filing.
- Executive summary: the whole investment case in about two pages, for the reader who won't get past page two.
- Investment considerations: the same case, expanded and evidenced: market position, growth, margins and moat.
- Market overview: size, growth and competitive landscape; the tailwinds the business is riding.
- Business description: products, customers, operations and geography (customer concentration and retention often get their own treatment).
- Growth opportunities: the value-creation levers a buyer is paying for: new products and markets, pricing, buy-and-build, margin expansion.
- Management & organisation: team, structure and depth below the founders.
- Historical financials: typically 3 years of actuals plus the current year and LTM (Last Twelve Months figures), with a normalised (adjusted) EBITDA bridge.
- Business plan / projections: the forward view with assumptions stated openly; where the equity story gets quantified.
- Transaction perimeter & process: what's being sold (share vs asset deal, any carve-out) and a high-level timeline. The detailed bid instructions live in the Process Letter, not here.
Practice, not regulation: teaser and IM contents are market convention. They are confidential marketing documents, not regulated filings.
Step 05 ยท Diligence
Due diligence & the data room
Due diligence (DD) is the buyer checking what they are buying before they commit. The seller opens a Virtual Data Room (VDR): a secure online repository of company documents, and the buyer's advisers review it workstream by workstream.
Typical VDR providers
The two names you'll hear most often are Datasite and Intralinks. Others used in the market include Ansarada, Drooms (common across DACH and Europe), and iDeals.
How a VDR is typically structured
The folder tree mirrors the diligence workstreams. An indicative structure:
1. Corporate
Structure, share register, articles, board minutes
2. Financial
Audited accounts, management accounts, budget
3. Tax
Returns, tax rulings, open audits
4. Commercial
Top customers, key contracts, pipeline
5. Legal & litigation
Material contracts, disputes, IP
6. HR & pensions
Key employees, comp, pension plans
7. Operations & IT
Facilities, systems, suppliers
8. Real estate
Leases and owned property
9. Insurance / ESG / regulatory
Policies, permits, compliance
How information actually flows
Buyers ask questions through a structured Q&A tool inside the VDR: each question is routed to the right seller-side expert, answered, and logged. As trust builds, the seller may allow expert sessions or fireside chats: live calls where buyer specialists question management or workstream leads directly. Management presentations (where target management presents the business to shortlisted buyers) are a standard milestone in any auction.
The diligence workstreams on the deal
These are the actual diligence streams run on the target itself (not to be confused with the bank's internal KYC-style checks on its client, covered earlier in Bank-side prep). Each stream is normally run by a specialist firm.
Financial DD
Quality of earnings, normalised EBITDA, working capital, net debt, cash conversion. Usually run by a Big 4 firm.
Tax DD
Open audits, tax rulings, deferred items, structuring risks. Usually the same Big 4 firm as financial DD.
Commercial DD
Market size and growth, competitive position, customer concentration, business plan stress-test. Usually a strategy consultancy (MBB or specialists like OC&C, L.E.K., Roland Berger).
Legal DD
Material contracts, change-of-control clauses, litigation, IP, regulatory permits. Run by the buyer's legal counsel.
HR & pensions DD
Key employees, retention risk, comp arrangements, pension underfunding (in Switzerland, BVG/LPP, the mandatory occupational pension regime).
Tech / IT / operational DD
Systems, cyber, facilities, supply chain. Sector-dependent; brought in where the target's value depends on technology or operational excellence.
Environmental & ESG DD
Site contamination, emissions, regulatory exposure, ESG reporting. Standard in industrial and real-estate deals; growing elsewhere.
Insurance DD
Existing coverage, claims history, gaps. Often combined with the W&I (warranty & indemnity) insurance placement.
Vendor Due Diligence (VDD)
On a sell-side, the seller commissions its own financial, tax, commercial and legal DD reports up front and shares them with the buyer pool. The bank usually coordinates which providers are appointed. Buyers get a consistent, credible starting fact base, which speeds up the auction and reduces late price surprises. Buyers still run their own confirmatory work on top.
Why diligence exists at all
The buyer knows far less about the company than the seller does. DD closes that gap. Findings feed directly into price (a problem found in DD becomes a price reduction or an indemnity), into the contract (warranties and conditions), and sometimes into whether the deal happens at all.
Step 06 ยท Pricing & the SPA
Pricing & the SPA
The headline price (enterprise value) is rarely the cash that actually changes hands. The pricing mechanism converts it into the actual amount paid and decides when economic risk passes from seller to buyer. The SPA wraps that, and everything else, into a single contract.
Locked box vs closing accounts
Two mechanisms dominate.
| |
Locked box Seller-friendly |
Closing / completion accounts Buyer-friendly |
| How price is set | Fixed by reference to a historical balance sheet at a past "locked box date". No post-closing adjustment.[9] | A preliminary price is paid at closing, then adjusted afterwards based on the actual balance sheet drawn up at completion.[10] |
| When risk passes | From seller to buyer at the locked box date. Economically, the buyer "owns" the business from then. | From seller to buyer at completion. |
| Protection mechanism | Leakage protection. The seller repays any value that "leaks" out (for example dividends or related-party payments) between the locked box date and closing.[9] | The post-closing true-up itself, with a dispute-resolution clause for disagreements. |
| Price certainty | High. Number is known at signing. | Lower. Final number known only after completion. |
| Speed & cost | Faster and cleaner. No post-closing accounting exercise. | Slower, more administrative, more dispute-prone. |
| Best when | Recent reliable (ideally audited / VDD-tested) accounts, competitive auction, private-equity sellers wanting a clean exit. | Buyer wants to "pay for what they get". Working capital is volatile or seasonal. Accounts less certain. |
What "leakage" means
Under a locked box, the buyer is paying for the business as it stood on the locked box date. If the seller pulls value out before closing, a dividend, a related-party payment, an above-market bonus, that's leakage: value the buyer paid for but no longer gets. The contract lists what counts as leakage and the seller has to pay it back. Agreed, ordinary-course items the buyer accepts are permitted leakage.
How an SPA is structured
The pricing mechanism above lives inside the Share Purchase Agreement (SPA), the main contract on a private share deal. An Asset Purchase Agreement (APA) follows similar logic but transfers specific assets and liabilities instead of shares. Across either, the document is built around nine recurring blocks.
Parties & recitals
Who is buying, who is selling, and a short narrative of why. Sets the deal context.
Object of sale
What's being transferred: which shares (and what percentage) in a share deal, or which specific assets and liabilities in an asset deal.
Purchase price
The price itself plus the pricing mechanism (locked box or closing accounts, covered above). Payment terms, escrow, earn-out where used.
Conditions precedent
What has to happen before closing can occur: merger-control clearance, third-party consents, CoC waivers, regulatory approvals.
Warranties
Seller statements about the business (accounts accurate, no undisclosed litigation). Breach triggers a claim, often backed by W&I insurance.
Pre-closing covenants
What the seller must do (and not do) between signing and closing: run the business in the ordinary course, no extraordinary dividends, no major new contracts without consent.
Post-closing covenants
Ongoing obligations after closing: non-compete, non-solicit, transition services, cooperation on tax and post-completion accounting.
Liability cap & baskets
The cap limits the seller's total liability for warranty claims. De minimis excludes trivial claims; the basket is a threshold below which no claim is paid. Negotiated by deal size and risk.
Governing law
Which jurisdiction's law governs the contract and which forum (court or arbitration) resolves disputes. Swiss law with arbitration in Zurich or Geneva is common.
SPA vs APA: the practical difference
An SPA transfers shares. The legal entity stays the same: every contract, asset, employee and liability comes with it in a single transfer. An APA transfers specific assets and liabilities item by item. Contracts may need to be re-papered, permits re-issued, and employees transferred under the relevant labour rules. Heavier execution, more flexibility on what's included.
06 ยท Calendar
How long it all takes
The process steps above repeat across deals. What changes is the calendar. Private deals are negotiated; public deals run on a clock set by Swiss takeover law. Both views below.
Timeline 01 ยท Private M&A
Private M&A: typical timeline
Private deals aren't bound by takeover law, so the timetable is negotiated. A mid-size auction commonly runs 4โ9 months from kick-off to closing. Bilateral deals can be faster, complex carve-outs much slower.
Indicative auction timeline, sell-side
Hover or tap a phase. Durations are market ranges, not rules.
Typical duration: 4 to 9 months from kick-off to closing
Weeks 1โ8
Preparation
Mandate, vendor DD, teaser & IM, buyer list, VDR set-up. Bank's internal risk/KYC sign-off happens here.
Weeks 8โ12
Phase 1 (non-binding)
Teaser โ NDA โ IM โ non-binding offers. Seller shortlists for Phase 2.
Weeks 12โ20
Phase 2 (binding)
VDR access, Q&A, management presentations, expert sessions, SPA mark-up, then binding offers.
Weeks 20โ24
Negotiation & signing
Final negotiation. Bring-down DD. Board go/no-go. Sign SPA.
Weeks 24+
Sign โ Close
Conditions precedent satisfied: merger control, consents, CoC waivers. Then closing.
Signing vs closing
Signing is when both sides sign the purchase agreement. Closing (completion) is when the deal actually happens, shares transfer, money is paid. They're separate because conditions precedent have to be met first (most commonly merger-control / antitrust approval, sometimes regulatory clearances or third-party consents). The gap can be days or many months.
Practice, not regulation: these durations are market ranges, not legal requirements. They vary widely by deal size, sector and regulatory complexity. Treat them as orientation.
Timeline 02 ยท Public M&A
Public M&A: the offer timeline
When the target is listed in Switzerland, the deal runs under the Financial Market Infrastructure Act (FMIA / FinfraG) and is supervised by the Swiss Takeover Board (TOB), with FINMA as the appeals body.[3] Most of the timeline is set by law, which makes public M&A a "by-the-rules" process.
The offer timeline, step by step
Hover or tap each stage. All "days" below are trading days (Monday to Friday, public holidays excluded). 10 trading days is roughly 2 calendar weeks.
Before "Week 0": the ramp-up
The timeline below starts at the pre-announcement. By the time that happens, a lot has already gone on behind the scenes: months of strategic work, valuation, financing arrangement, confidential negotiations with the target board, due diligence under NDA, and drafting of the transaction agreement and offer prospectus. On large public deals this preparation phase commonly runs 3 to 6+ months before any public step. Week 0 is the moment the world finds out.
Friendly Swiss public tender offer, indicative statutory path
Anchored to TOB framework and the Baker McKenzie / Lexology guides[6].
From prospectus to settlement: roughly 10 weeks
Week 0
Pre-announcement
Transaction agreement signed in a friendly deal. Pre-announcement locks in the minimum price and starts a 6-week clock for the prospectus.
โค Week 6
Prospectus
Prospectus published within 6 weeks. Review body confirms compliance and financing. Target board's report published with it.
~Week 8
Cooling-off (10 td)
10 trading days cooling-off after the prospectus. Offer not yet acceptable. Qualified shareholders can object.
~Weeks 12โ14
Offer period (20โ40 td)
Offer open 20โ40 trading days. Shareholders hand in (tender) their shares. Competing bid can be launched until the last day.
End of period
Interim result
Bidder publishes the interim result. Thresholds vary by bidder: 50%+1 common, 66โ
% if statutory changes needed, ~90% for squeeze-out merger, ~98% for statutory squeeze-out. If not met: waive (when close), extend, or walk away.
+10 td
Top-up period
10 more trading days for remaining shareholders to hand in (tender) their shares. Final result published.
~Week 17
Settle & squeeze-out
Settlement within 10 trading days after the top-up. Squeeze-out via court (>98%) or merger (>90%). Delisting usually follows.
07 ยท Thresholds & rules
The thresholds that drive every Swiss public deal
Four percentage thresholds define almost every public M&A decision in Switzerland: when you have to disclose, when you have to make an offer for everyone, when you can force the rest out. Knowing them cold is what separates a candidate who has read about M&A from one who can talk about a deal.
3%
Disclosure
Crossing 3 / 5 / 10 / 15 / 20 / 25 / 33โ
/ 50 / 66โ
% of voting rights triggers a notification to the company and the SIX Disclosure Office, due within 4 trading days; the company publishes within 2 trading days.[2]
33โ
%
Mandatory offer
Cross 33โ
% of voting rights and you must make a mandatory offer for all listed equity securities, within 2 months. Articles can raise this to 49% ("opting-up") or waive it ("opting-out").[1]
>90%
Squeeze-out merger
Hold >90% but <98% and you can force out minorities via a squeeze-out merger under the Merger Act. Minorities keep an appraisal right to challenge the compensation in court.[4]
>98%
Statutory squeeze-out
Hold >98% of voting rights and you can cancel the remaining shares via a court procedure, filed within 3 months of the end of the additional acceptance period.[5]
Opting-out / opting-up
A Swiss listed company can change the mandatory-offer rule in its articles of association. Opting-out waives the rule entirely. A buyer can go above 33โ
% without having to bid for everyone. Opting-up raises the trigger from 33โ
% to a higher level, up to 49%. Always check the target's articles early: an opting-out clause changes the whole strategy.[1]
Minimum price & best price rules
If a target has no opting-out, two rules protect minority shareholders on price.
Minimum price rule. The offer price must be at least the higher of: (a) the 60-trading-day VWAP (volume-weighted average price) before the pre-announcement or the offer prospectus, and (b) the highest price the bidder paid for any target share in the previous 12 months.[11]
Best price rule. If, between publishing the offer and 6 months after the additional acceptance period ends, the bidder pays a higher price to anyone, every accepting shareholder must get that higher price too.[11]
Together: insiders can't pre-buy cheap and undercut the offer, and they can't pay more later and exclude the people who already handed in (tendered) their shares.
08 ยท Beyond the textbook
Things bankers also watch
A real banker's job isn't just the process. It's the long list of "other things that can blow up the deal" that experienced people watch from day one. Tap any item to expand.
Change-of-control (CoC) clauses
Big customer, debt and licence contracts often let the counterparty walk if ownership changes. The deal team maps every material CoC and chases waivers before closing.
Material contracts, big customer agreements, financing/loan documents, leases, IT licences, often contain a change-of-control clause: if the company changes owner, the counterparty can renegotiate or terminate.
The DD team maps every material CoC clause. Where one bites, the buyer seeks a waiver or consent before closing. CoC clauses in debt are especially sensitive, they can force early repayment, so the debt is either waived or refinanced as part of the deal. Refinancing means the buyer arranges new debt at closing to repay the target's outstanding debt.
CustomersDebtLeasesLicences
Pension underfunding (BVG / LPP)
Swiss second-pillar pension liabilities can sit largely off the corporate balance sheet but still affect the equity bridge. Buyers diligence the underfunding status.
In Switzerland, employer pension liabilities (BVG/LPP "second pillar") can sit largely off the corporate balance sheet but still affect the equity bridge. Buyers diligence the underfunding status of pension foundations, it can become a real adjustment to price.
Underfunded example. EV of CHF 1,000m, net debt of CHF 200m, pension underfunding of CHF 50m. The underfunding is treated as debt-like, so equity value = 1,000m โ 200m โ 50m = CHF 750m.
Overfunded case. Under Swiss BVG/LPP rules, any surplus in a pension foundation belongs to plan members, not the seller. So an overfunded pension doesn't add to equity value at closing.
BVG / LPPEquity bridge
Working capital peg
In a closing-accounts deal, the agreed "normal" level of working capital at completion. Actual vs peg drives the post-closing price adjustment.
In a closing-accounts deal, buyer and seller agree a target working capital level (the peg) at signing. At closing, actual working capital is compared to the peg, and the price is adjusted up or down. The peg negotiation is one of the most quietly painful parts of any SPA, it's where months of operating performance get translated into a single number.
Example. EV of CHF 500m, peg of CHF 80m. If delivered working capital at closing is CHF 90m (10m above peg), the buyer pays 510m. If delivered is CHF 65m (15m below peg), the buyer pays 485m. The logic: the buyer paid for a "normal" level of WC, so any surplus or shortfall is settled in cash at closing.
Closing accountsEquity bridge
Hold harmless letter (auditor non-reliance)
Before the deal team's Q&A call with the target's auditor, the calling parties sign a non-reliance letter. The auditor won't talk otherwise.
During DD, the deal team often runs a Q&A call with the target's auditor to clarify accounting treatments, surface unresolved points and stress-test the financials. Before that call happens, the auditor requires the calling parties (and often the lawyers) to sign a hold harmless / non-reliance letter.
The letter says, in substance, that the calling parties acknowledge they cannot rely on anything said in the call for any legal purpose, and will not sue the auditor based on the discussion. Auditors require this to protect themselves from secondary liability for off-the-record verbal answers given outside the formal audit report.
A related but different document is the reliance letter: in some transactions, the target's auditor authorises a third party (often the buyer or its financing banks) to formally rely on the existing audit report. That sits separately and is handled by the lawyers.
DD callsAuditorLiability
Tax structuring & rulings
Choice of acquisition vehicle, debt push-down, withholding tax. Where treatment isn't clear, an advance tax ruling locks in certainty before signing.
On Swiss deals the structuring team, usually the buyer's tax adviser plus legal counsel, works to optimise the transaction tax-wise (e.g. acquisition vehicle, intra-group debt push-down, withholding tax). Where treatment isn't clear, an advance tax ruling with the relevant cantonal or federal tax authority gives certainty before signing.
Tax rulingSPV
Warranty & Indemnity (W&I) insurance
An insurance policy that takes seller warranty risk off the seller and onto an insurer. Premium typically 1โ1.7% of cover. Standard in private equity (PE) auctions.
In an SPA the seller gives warranties ("the accounts are accurate", "no undisclosed litigation"). If a warranty turns out false, the buyer can claim against the seller. W&I insurance lets an insurer take on that risk: the buyer claims against the policy, not the seller.
Why use it. The seller gets a clean exit with little or nothing tied up in escrow, very attractive to PE and in auctions. The buyer gets a solvent, neutral party to claim against, often with a longer claims window.[12]
Mechanics. Single premium paid at completion, non-renewable. The cover is the maximum amount the insurer will pay out under the policy. Premium is typically around 1โ1.7% of the cover placed.[13] Example: CHF 50m of cover at a 1.4% premium = CHF 700k single premium at completion. Buyer-side policies are by far the most common.
What it doesn't cover. Known issues already flagged in DD, fraud, seller's non-warranty obligations (e.g. non-compete), and some category-specific risks (e.g. certain environmental or pension exposures).[12]
When it doesn't make sense. Very small deals where the premium isn't worth it; deals without proper DD (insurers underwrite off the DD); situations with known, material issues, those go into specific indemnities, not warranties.
PE exitsAuctionsLocked box
MAC / MAE clauses
A "Material Adverse Change" clause lets the buyer walk between signing and closing if something bad enough happens. Narrow, heavily negotiated, rarely successfully invoked.
A Material Adverse Change (or Effect) clause lets the buyer walk if something bad enough happens between signing and closing. They're narrow, heavily negotiated, and rarely successfully invoked, but the negotiation around what counts (e.g. a 10% drop in EBITDA, a specific event) is a routine flashpoint.
Walk-awayConditions
Break / reverse break fees
A fee paid if the deal falls apart. Break fee = paid by the target (e.g. accepts a higher bid). Reverse break fee = paid by the buyer (e.g. financing or clearance falls away).
A break fee is paid by the target/seller if the deal falls through (typically because the target accepts a better bid). A reverse break fee is paid by the buyer if it fails to close (often where regulatory clearance or financing falls away). Both are heavily negotiated and, on Swiss public deals, bounded by the target board's fiduciary duties.
Deal certainty
Stub equity & management rollover
In PE deals, management often rolls part of their equity into the new structure instead of cashing out fully. The roll signals their belief in the next chapter.
In PE deals, target management often rolls over part of their existing equity into the new owner's structure instead of fully cashing out. The size and terms of the roll signal management's belief in the next chapter, and align incentives. Bankers model the resulting stub equity when comparing offers.
Example. A PE fund buys a CHF 100m equity ticket. The founder rolls 20% of their proceeds: they receive CHF 80m in cash plus CHF 20m of stub equity in the new HoldCo. In Swiss mid-market PE, management rollover typically sits in a 5โ25% range.
PEManagement
Negotiation simulation
Pre-meeting role-play: the team rehearses the other side's likely positions, walk-aways and tactics before going in for real.
Before key negotiation rounds, deal teams sometimes run a negotiation simulation: rehearsing the other side's likely positions, walk-away points and tactics, so the client goes in prepared rather than reacting live. It's preparation, not a formal process step.
Sign-off prepTactics
Rating agency engagement
If the buyer has rated debt, the deal's leverage and capital structure are pre-discussed with S&P, Moody's and Fitch, often under NDA, to manage rating risk.
If the buyer (or the combined group) has rated debt, the deal's effect on the credit rating matters. Teams engage S&P, Moody's, Fitch: often under confidentiality before announcement, to understand how the new capital structure will be viewed and whether a downgrade is likely.
Some debt documents give a short grace period to restore metrics post-deal. The financing plan is built around keeping the target rating: leverage path, dividend policy, asset sales.
S&PMoody'sFitch
Merger control / antitrust
Most cross-border deals trigger filings with Swiss COMCO and often EU, UK, US regulators. The most common reason a sign-to-close gap stretches into months.
Most cross-border deals trigger filings with the Swiss Competition Commission (COMCO/WEKO) and often the EU, UK, US and other national regulators. The lawyers map jurisdictions early, clearances are the most common reason a sign-to-close gap stretches from weeks into months.
For sensitive sectors (telecom, media, financial services, healthcare), sector regulators may also need to clear the change of control.
COMCOEU/UK/USSector regulators
Foreign direct investment (FDI) screening
A growing layer of national-security review across Europe. Switzerland is debating a regime; EU and other host-country FDI screening already applies in many cases.
FDI screening is government review of foreign acquisitions of domestic companies in strategic sectors (defence, critical infrastructure, sensitive tech) on national-security grounds.
FDI control has moved up the agenda across Europe. Switzerland is debating a formal regime, while EU and other host-country FDI screening already applies if the buyer or target sits there. Like merger control, FDI clearances can hold up the sign-to-close period, sometimes for many months.
GeopoliticsNational security
Communications & employee plan
Who is told what and when, board, top customers, suppliers, employees, regulators. A botched plan leaks the deal, spooks staff or triggers a customer review.
Especially on a public deal: who is told what and when (board, top customers, key suppliers, employees, regulators), in what order, in which languages. A botched communications plan can leak the deal early, scare key staff or trigger a customer review. Banks coordinate with the lawyers and a communications adviser.
StakeholdersRetention
Leak protocol
A pre-agreed plan for if the deal hits the press early. Critical on Swiss listed deals because ad hoc publicity and insider-trading rules can force an immediate announcement.
A leak protocol is the pre-agreed plan for what to do if the deal leaks to the press before the parties are ready. It sets out who decides, what gets said, and (for a Swiss listed party) whether an early announcement is required under ad hoc publicity rules.
Insider-trading and market-manipulation rules under the FMIA are felony-level offences in Switzerland[14], so the protocol is drafted with the lawyers up front.
Ad hocInsider law
Sources
- Mandatory offer threshold (33โ
%), opting-out / opting-up, 2-month deadline, CMS Expert Guide to Public Takeovers, Switzerland: cms.law; Bรคr & Karrer / ICLG M&A 2026 Switzerland: baerkarrer.ch.
- Disclosure thresholds (3% to 66โ
%), 4-trading-day filing / 2-trading-day publication, SIX Handbook, Disclosure of Shareholdings: handbooks.six-group.com; SIX Exchange Regulation: ser-ag.com.
- TOB role, FINMA as appeals body, review body / financing confirmation, FINMA, Public takeover bids: finma.ch; ICLG M&A 2025 Switzerland: iclg.com.
- Squeeze-out merger at >90% under the Merger Act, appraisal right, Bรคr & Karrer / ICLG 2026: baerkarrer.ch; CMS Expert Guide: cms.law.
- Statutory squeeze-out at >98%, 3-month court filing window, Bรคr & Karrer / ICLG 2026: baerkarrer.ch; Lexology, Q&A completing public M&A in Switzerland: lexology.com.
- Offer timeline (6-week prospectus window, 10-trading-day cooling-off, 20โ40-trading-day offer period, +10-trading-day additional acceptance, 10-trading-day settlement), Baker McKenzie Global Public M&A Guide, Switzerland: bakermckenzie.com; Lexology Q&A: lexology.com.
- Share deal vs asset deal, Swiss tax treatment (capital gains exemption for individuals, VAT, real estate transfer tax, depreciation step-up, loss carry-forwards), Walder Wyss, Comparing Asset and Share Purchases (Switzerland): walderwyss.com (PDF); Lexology, Q&A tax on acquisitions in Switzerland: lexology.com; Baker McKenzie Global Private M&A Guide, Switzerland: bakermckenzie.com.
- Swiss securities transfer tax, 0.15% (Swiss shares) / 0.3% (foreign shares) when a Swiss securities dealer is involved, Walder Wyss: walderwyss.com (PDF).
- Locked box mechanism, fixed price on historical accounts, leakage protection, seller-friendly, fits competitive auctions, KPMG, Locked box vs completion accounts: kpmg.com; EY: ey.com.
- Completion / closing accounts, preliminary price then post-closing true-up; "buyer pays for what it gets", EY: ey.com.
- Minimum price rule (higher of 60-trading-day VWAP and highest price paid by bidder in the prior 12 months) and best price rule (6 months after additional acceptance period), Baker McKenzie Global Public M&A Guide, Switzerland: bakermckenzie.com; CMS Expert Guide: cms.law; takeoverpractice.ch (FMIA Art. 135): takeoverpractice.ch.
- W&I insurance, coverage, exclusions, single-premium structure, single premium paid at completion, WTW: wtwco.com; PwC Legal: pwclegal.be.
- W&I premium guidance (approx. 1โ1.7% of cover), Osborne Clarke, Warranty and Indemnity insurance in M&A transactions: osborneclarke.com.
- Insider trading and market manipulation under FMIA are felony-level offences; SIX ad hoc publicity rules, Lexology, In brief: the legal framework for public M&A in Switzerland: lexology.com.
Hard rules and thresholds are anchored to primary Swiss sources (TOB, SIX, FINMA, FMIA) or to Swiss law-firm guides built on them. Where a section is labelled "Practice, not regulation," it reflects standard market convention rather than codified Swiss law. Educational material only, not legal, tax or financial advice. Always confirm against the current primary source and qualified advisers before acting.