M&A Complete Guide: Mergers & Acquisitions Terminology, Equity Structure, and Acquisition Methods

1. What Is M&A? Core Concepts

Mergers and Acquisitions (M&A) is one of the most powerful tools in corporate growth strategy. Unlike organic growth through internal development, M&A enables inorganic growth — rapidly expanding scale or acquiring capabilities through external transactions.

Merger

A merger is the combination of two or more companies into a single entity.

• Absorption Merger: Company A absorbs Company B; B ceases to exist and only A survives
• Consolidation Merger: Both A and B cease to exist and a new Company C is created
• Merger of Equals: Two companies of similar size combine on equal terms

Acquisition

An acquisition is when one company (the acquirer) obtains control over another company (the target).

• Stock Acquisition: The acquirer purchases shares of the target to gain control
• Asset Acquisition: Only specific business units or assets are purchased selectively
• Control Acquisition: Securing a controlling stake (above 50%)

M&A vs. Pure Investment

The core distinction in M&A is whether control is obtained. Acquiring less than 5% of shares is typically classified as a financial investment; acquiring more than 50% constitutes a control acquisition. Under Korean corporate law, a supermajority of two-thirds is often required for significant decisions, meaning effective control typically requires that level of ownership.

Motivations for M&A

• Horizontal Integration: Absorbing competitors in the same industry to expand market share
• Vertical Integration: Acquiring upstream/downstream companies in the supply chain
• Diversification: Entering new business areas
• Technology/Talent Acquisition (Acqui-hire): Obtaining specific technology stacks or key personnel
• Cost Synergies: Reducing costs by integrating overlapping functions

2. Key M&A Terminology Dictionary

Transaction Parties and Structure

Price and Value Terminology

Equity Structure Terminology

Controlling Shareholder

• Holds more than 50% of voting rights
• Can unilaterally make board composition and major operational decisions

Largest Shareholder

• The shareholder with the highest ownership stake (may be below 50%)
• Subject to disclosure requirements under Korean securities law

Minority Shareholder

• Shareholders without control
• Minority protection clauses (MFN, Tag-along, Drag-along) are critical

Key Share Types

• Common Stock: Ordinary shares with both voting rights and dividend rights
• Preferred Stock: Priority dividend rights with limited or no voting rights
• Convertible Preferred: Can be converted to common stock under certain conditions — common in startup investments
• Convertible Bond (CB): Bond that can be converted into equity
• Bond with Warrant (BW): Bond that includes the right to subscribe for new shares
• Exchangeable Bond (EB): Bond that can be exchanged for shares of another company held by the issuer

Dilution

• When new shares are issued through CB/BW/stock option exercises, existing shareholders' ownership percentages decrease
• Fully Diluted Basis: Calculating ownership percentages accounting for all potential share conversions

Key Shareholders' Agreement (SHA) Provisions

• Tag-along Right: If the controlling shareholder sells, minority shareholders may sell on the same terms
• Drag-along Right: The controlling shareholder can compel minority shareholders to join in a sale
• Right of First Refusal (ROFR): Existing shareholders get first opportunity to purchase shares before they are sold to outsiders
• Anti-dilution: Protects existing investors' ownership percentage in subsequent financing rounds
• Board Seat: Right to nominate a director above a specified ownership threshold

Due Diligence and Contract Terminology

3. Acquisition Methods in Detail

Friendly Acquisition

An acquisition conducted with the consent of the target's management and board of directors.

Process

1. Initial approach → NDA execution
2. Receipt and review of IM (Information Memorandum)
3. Submission and negotiation of LOI or Term Sheet
4. Securing exclusivity rights (Exclusivity)
5. Due Diligence
6. Final SPA negotiation and signing
7. Regulatory approvals (antitrust filings, etc.)
8. Transaction closing

Advantages

• Access to internal information enables thorough due diligence
• Management cooperation facilitates smooth PMI
• Relatively lower transaction risk

Disadvantages

• Management's control of the process may lead to higher prices
• Potential for protracted negotiations

Hostile Takeover

An attempt to acquire control of a company directly through its shareholders despite opposition from the board or management.

Hostile Takeover Tactics

Tender Offer

• The acquirer publicly proposes to purchase shares directly from all shareholders
• Offered at market price plus a premium (typically 20~40%)
• Shares tendered by shareholders within a specified period (typically 20~30 business days) are purchased
• South Korea: Mandatory tender offer rules apply when acquiring 5% or more of shares (Capital Markets Act)

Proxy Fight

• Securing voting proxies from shareholders to change the composition of the board
• Lower cost than a tender offer but requires persuading many shareholders
• Frequently used by activist funds

Defense Strategies Against Hostile Takeovers

Poison Pill (Shareholder Rights Plan)

• When a hostile acquirer exceeds a certain ownership threshold (e.g., 20%), existing shareholders receive rights to purchase new shares at a discounted price
• The acquirer's ownership is heavily diluted, dramatically increasing the cost of acquisition
• The most widely used defense in the United States — limited application in Korea

Golden Parachute

• Contract provisions guaranteeing substantial severance payments to executives if they are terminated following an acquisition
• Increases the effective cost of the acquisition and deters acquirers

White Knight

• Attracting a friendly third-party acquirer instead of the hostile bidder
• Negotiated with conditions to maintain current management

White Squire

• Similar to White Knight but acquires only a minority stake rather than the whole company
• Prevents the hostile acquirer from reaching their target ownership level

Pac-Man Defense

• The target company counters by launching its own tender offer for the acquirer's shares
• Forces the acquirer into a defensive position

Crown Jewel Defense

• Selling the most valuable core assets to a third party
• Reduces the target's attractiveness after acquisition, discouraging the bid
• Risks long-term destruction of enterprise value

Supermajority Provision

• Charter provisions requiring 75~90% or more shareholder approval for mergers
• Makes mergers impossible without a very large ownership stake

Dual-Class Share Structure

• Grants certain shareholders (often founders) multiple votes per share (e.g., 10 votes per share)
• Provides fundamental protection against hostile takeovers — used by Google, Facebook, and others

Leveraged Buyout (LBO)

An acquisition financed largely through debt, using the target company's assets and cash flows as collateral.

LBO Structure

1. A private equity fund (PEF) establishes a Special Purpose Company (SPC)
2. The SPC raises funding through debt (Senior Debt, Mezzanine) and equity
3. The SPC acquires the target and merges with it
4. The target's cash flows are used to repay the debt
5. Exit via IPO or secondary sale after 5~7 years

Ideal LBO Candidates

• Stable, predictable cash flows (high EBITDA margins)
• Substantial tangible assets available as collateral
• Meaningful cost reduction opportunities
• Non-cyclical businesses

LBO Risks

• High debt levels create default risk if interest rates rise or performance deteriorates
• Restructuring pressure leads to underinvestment in long-term growth
• Potential erosion of trust from employees and customers

MBO (Management Buyout)

Current management directly acquires the company, typically in partnership with a private equity fund.

• Management holds inside information enabling accurate due diligence
• The private equity fund provides capital financing
• Management's minority stake offers significant upside tied to performance (Equity Kicker)

Joint Venture (JV)

Two or more companies establish a new legal entity for a specific purpose.

Key JV Negotiation Points

• Ownership percentages (50:50, 51:49, 70:30, etc.)
• Board composition and decision-making structure
• Profit distribution and reinvestment policy
• Deadlock resolution mechanisms
• Call Option (right to buy out partner) and Put Option (right to sell to partner)

Tender Offer in Detail

Process

1. Tender offer filing (with financial regulators)
2. Public announcement (major newspapers and regulatory disclosures)
3. Tender period (20~30 business days)
4. Acceptance and settlement
5. Post-control delisting of the target may follow

Factors Determining Tender Offer Price

• Premium level over recent trading price
• Presence of competing bidders (competitive bidding increases price)
• Regulatory risk
• Target company's negotiating leverage

4. M&A Process in Detail

Phase 1: Strategy Development (1~3 months)

• Clarifying M&A objectives: market share, technology acquisition, talent, vertical integration, geographic expansion
• Target screening: industry analysis → Long List → Short List of priority targets
• Internal preparation: acquisition budget, financing plan, board authorization

Phase 2: Approach and Negotiation (1~2 months)

• Initial contact (gauging selling interest)
• NDA execution
• Receipt of IM (Information Memorandum)
• Preliminary valuation and LOI/Term Sheet submission
• Securing exclusivity (Exclusivity Period — typically 4~8 weeks)

Phase 3: Due Diligence (1~3 months)

Financial Due Diligence

• Analysis of 3~5 years of financial statements
• Quality of Earnings (QoE) analysis — removing one-time items
• Identification of off-balance sheet liabilities (contingent liabilities, litigation provisions)
• Working capital analysis and seasonality assessment
• Capital expenditure (Capex) requirement analysis

Legal Due Diligence

• Review of key contracts (customers, suppliers, partnerships)
• Litigation status and potential legal risks
• Intellectual property (patents, trademarks, copyrights) status
• Regulatory compliance (antitrust, environmental, data privacy)
• Employment and labor issues

Tax Due Diligence

• Analysis of deferred tax assets and liabilities
• Tax risks and potential additional tax assessments
• Tax efficiency strategies based on acquisition structure

Technology Due Diligence

• Modernity and scalability of the technology stack
• Level of technical debt
• Strength of patent portfolio
• Cybersecurity vulnerabilities

HR Due Diligence

• Key personnel overview and attrition risk
• Compensation structure and employee benefits
• Stock option status and vesting schedules
• Employment agreements and non-compete clauses

Phase 4: Definitive Agreement and Closing

• Final SPA negotiation (R&W provisions, indemnification caps, etc.)
• Board resolutions and shareholder meeting approval (if required)
• Antitrust filing and approval (e.g., Korea Fair Trade Commission)
• International regulatory approvals (where applicable — FTC, EU Commission, etc.)
• Verification of closing conditions
• Payment of consideration and share transfer

Phase 5: PMI (Post-Merger Integration)

PMI is the critical phase that determines M&A success or failure. Research shows more than 70% of M&A deals fail to realize their expected synergies due to PMI failures.

100-Day Plan

• Days 1~30: Rapid stabilization — retaining key talent, communicating with customers
• Days 31~60: Integration design — restructuring organization, systems, and processes
• Days 61~100: Execution — consolidating overlapping functions, beginning synergy realization

Organizational Integration

• Eliminating and repositioning duplicate departments
• Culture integration
• Harmonizing compensation structures
• Designing retention packages for key talent

Systems Integration

• ERP system integration (SAP, Oracle, etc.)
• HR system consolidation
• IT infrastructure integration
• Data migration

Brand Strategy

• Absorbing the acquired company's brand into the acquirer's brand
• Maintaining the acquired brand independently
• Co-branding approach
• Complete rebranding

5. Post-Acquisition Phenomena

Culture Clash

The most common problem following M&A.

• Startup vs. Corporate Culture Collision: Differences in decision-making speed, hierarchy, dress codes
• Key Talent Attrition: Talented individuals dissatisfied with the new environment leave — particularly acute in startup acquisitions
• Compensation Gaps: Differences in pay between the acquirer and acquired company employees
• Uncertainty Psychology: Productivity declines due to fears about restructuring

Financial Phenomena

Goodwill

• The amount by which the acquisition price exceeds the fair value of the target's identifiable net assets
• Recorded as an asset on the balance sheet
• Annual impairment testing required — impairment results in a one-time loss

Winner's Curse

• Paying an excessive premium to win a competitive bidding process, followed by underperformance
• Often results in stock price decline and unrealized synergies

Restructuring

• Workforce reductions from integrating overlapping functions
• Real estate consolidation (office closures)
• Divestiture of non-core business units

PPA (Purchase Price Allocation)

• Allocating the acquisition price across acquired assets and liabilities
• Recognition of intangible assets (customer relationships, technology, brand) generates amortization charges

Regulatory Issues

Antitrust Filing (Korea Fair Trade Commission)

• Mandatory filing when the combined parties exceed certain thresholds (e.g., assets of 300 billion KRW or more)
• Review of whether the combination restricts market competition
• Conditional approval possible (behavioral or structural remedies)

International Regulatory Approvals

• United States: FTC (Federal Trade Commission), DOJ (Department of Justice)
• European Union: European Commission DG COMP
• China: SAMR (State Administration for Market Regulation)
• Approvals from major market regulators are typically closing conditions

Foreign Investment Regulations

• Defense industry, telecommunications, energy, and national security-sensitive sectors
• Korea: Foreign Exchange Transaction Act, Defense Acquisition Program Act, etc.
• United States: CFIUS (Committee on Foreign Investment in the United States) review

6. Major Korean M&A Case Studies

SK Hynix — Acquisition of Intel's NAND Flash Business (2021)

• Acquisition price: Approximately 9 trillion KRW (Phase 1 approximately 6 trillion KRW + Phase 2 approximately 3 trillion KRW, completed 2025)
• Acquisition purpose: Strengthening NAND business, entering enterprise SSD market
• Notable: Delays due to regulatory approval processes in the US, China, and other countries

Hyundai Motor — Acquisition of Boston Dynamics (2021)

• Acquisition price: Approximately 1.1 trillion KRW (80% stake acquired from SoftBank)
• Acquisition purpose: Securing robotics technology, driving smart logistics innovation
• Post-acquisition: Acceleration of robot commercialization, investment in robot manufacturing facilities

Kakao — Tender Offer for SM Entertainment (2023)

• Method: Public tender offer (proposed 150,000 KRW per share)
• Notable: Competitive bidding against HYBE — Kakao ultimately prevailed
• Outcome: Pursuing content synergies between Kakao Entertainment and SM

Krafton — Global Studio M&A Strategy

• Multiple acquisitions of game studios in India, the US, and Europe
• Acqui-hire strategy: Genre diversification and global development capability acquisition

Naver/Kakao — Startup Acqui-hires

• Purpose: Securing technology talent and specific services
• Early-stage startups acquired for tens of billions to hundreds of billions of KRW
• Post-acquisition: Service integration or continued independent operation

7. Startup M&A Specifics

Acqui-hire

An acquisition where the primary purpose is acquiring talent and technology rather than the business or service itself.

• An efficient hiring method to bring on an entire team
• A significant portion of the acquisition price is typically designed as talent retention compensation
• The existing service is often shut down post-acquisition

Stock Option Treatment

• Acceleration (Single Trigger): Upon an M&A event, unvested stock options immediately become exercisable
• Double Trigger: Acceleration only applies if the employee is also terminated within a specified period post-acquisition
• Cash Settlement: Stock options are settled in cash as part of the acquisition consideration
• Replacement Grant: Stock options are converted into the acquirer's stock options

Ratchet Provisions

Provisions that pressure founders and management to achieve performance targets.

• If revenue/profit targets are missed within a certain period after acquisition, the founder's ownership stake decreases
• Conversely, exceeding targets may trigger upward price adjustments (similar to Earnout)

Founder Lock-up

• Mandatory employment period of 1~3 years post-acquisition
• Designed to prevent key talent attrition
• A portion of compensation is tied to the Lock-up period

Earnout Structure

• Additional consideration paid when revenue/EBITDA targets are achieved over 1~3 years post-acquisition
• Benefits the acquirer through risk distribution; benefits the seller through value upside
• The key negotiation points are the measurement metrics, time period, and cap

8. Valuation Methods

DCF (Discounted Cash Flow)

Future free cash flows (FCF) are discounted to present value.

Enterprise Value = Σ (FCFt / (1+WACC)^t) + Terminal Value

• WACC (Weighted Average Cost of Capital): Weighted average of the cost of equity and cost of debt
• Terminal Value: The perpetual value beyond the forecast period
• Pros: Reflects intrinsic value, enables scenario analysis
• Cons: Sensitive to assumptions, difficult to apply to high-growth companies

Comparable Company Analysis (EV/EBITDA Multiple)

Applies EV/EBITDA multiples from publicly traded peer companies to the target.

• IT Services: 15~25x
• Manufacturing: 6~10x
• Retail/Distribution: 5~8x
• Biotech: 30x+ (revenue multiples used for unprofitable companies)

Precedent Transaction Analysis

References the multiples paid in similar past M&A transactions.

• Incorporates control premium, resulting in higher multiples than trading comps
• Recent transactions from the past 1~3 years are preferred

P/E Multiple Method

Determines value based on the price-to-earnings ratio observed in the market.

• Appropriate for mature companies with stable earnings
• Less suitable for companies with volatile net income

PBR (Price-to-Book Ratio)

Evaluates market value relative to book value of net assets.

• Appropriate for financial companies, real estate, and asset-intensive industries
• A ratio below 1.0 means trading below liquidation value

Sum-of-the-Parts Valuation

Calculates value for each business unit separately and sums the results.

• Useful for evaluating conglomerates
• Must account for the conglomerate discount

9. Top 10 Reasons M&A Deals Fail

1. Overpayment (excessive acquisition premium)
2. Overestimation of synergies
3. Insufficient PMI preparation
4. Culture integration failure
5. Key talent attrition
6. Inadequate due diligence
7. Overlooking regulatory risk
8. Lack of strategic fit
9. Insufficient integration execution capability
10. Excessive leverage (LBO-specific)

10. Quiz: Test Your M&A Knowledge

11. Key M&A Regulations (South Korea)

12. Common English Expressions in M&A

We are exploring strategic alternatives including a potential sale.

The Board has determined that the proposed transaction is in the
best interest of shareholders.

The deal is subject to customary closing conditions including
regulatory approvals.

We are in preliminary discussions. There can be no assurance
that these discussions will result in a transaction.

M&A is a powerful driver of corporate growth, but it is simultaneously one of the most complex and high-risk strategic decisions a company can make. Successful M&A requires rigorous due diligence, realistic valuation, and above all, thorough preparation for PMI.