A Share Purchase Agreement (SPA) forms the foundation of any successful business acquisition. This legally binding document outlines the terms and conditions under which shares of a company change ownership. For corporate legal teams, understanding the intricacies of SPAs is essential to protect their organization’s interests and ensure smooth transactions.
Global deal values rose 36% in 2025, and 41% of CEOs plan to undertake a major acquisition within the next three years, according to PwC’s Global M&A Industry Trends 2026. As deal activity picks up, the demands on legal teams to execute transactions efficiently and with minimal risk continue to grow.
Key Takeaways
A Share Purchase Agreement is a legal contract between a buyer and seller that documents the sale and transfer of shares in a company. Unlike asset purchase agreements which involve acquiring specific business assets, an SPA transfers ownership of the company itself through its shares.
Definition and Purpose
The primary purpose of a share purchase agreement is to formalize the terms of a share transfer transaction. This document serves as the legal framework governing how ownership changes hands, establishing rights and responsibilities for all parties involved.
SPAs are commonly used in mergers and acquisitions, private equity investments, and corporate restructuring. They provide legal protection for both buyers and sellers by clearly defining what is being purchased, the purchase price, and the conditions under which the transaction will proceed.
When comparing asset purchase agreements with share purchase agreements, several key differences emerge:
Before the SPA: The Role of the Term Sheet
Most SPA transactions don’t start with the agreement itself. They start with a term sheet, also called a letter of intent (LOI). This shorter document aligns the parties on key commercial terms before lawyers invest time drafting the full agreement.
A well-negotiated term sheet:
Once the term sheet is agreed, due diligence begins and the SPA is drafted, typically by the buyer’s counsel. Material issues found during due diligence then feed directly into the final terms of the agreement.
The buyer’s legal counsel typically writes the first draft. Because the buyer assumes the greater risk, inheriting all of a company’s liabilities, known and unknown, controlling the initial document lets their team anchor key provisions, from indemnity caps to warranty schedules.
The seller’s lawyers then review and respond with redlines. For complex transactions, several rounds of negotiation follow before both sides agree on final language. The final SPA can look substantially different from the first draft, particularly on representations, indemnification limits, and conditions precedent.
A well-structured SPA contains several critical sections that protect the interests of all parties involved in the transaction.
Parties and Purchase Details
The agreement begins by identifying the buyer, seller, and target company. It specifies the number of shares being transferred and establishes the purchase price, including any adjustments based on financial performance or other factors.
Representations and Warranties
This section contains statements of fact about the business that the seller guarantees to be true at the time of signing. These representations cover aspects such as:
Conditions Precedent
Conditions precedent are the requirements that must be satisfied before the transaction can formally close. Until these are met, neither party is legally obligated to complete the deal.
Common conditions include:
Where regulatory clearances are required, they can significantly extend the signing-to-closing timeline, sometimes by several months.
Covenants and Obligations
Covenants describe actions that parties must take or refrain from taking between signing and closing. They often include provisions about how the business should be operated during this interim period to preserve its value.
Indemnification Provisions
These clauses establish how parties will be compensated if they suffer losses resulting from breaches of the agreement, particularly violations of representations and warranties.
Earn-outs and Post-completion Obligations
Many SPAs include earn-out provisions, where part of the consideration is paid after closing, contingent on the target company hitting defined performance milestones. This structure bridges valuation gaps, particularly in deals where future growth drives a meaningful portion of the agreed price.
Post-completion obligations can also include transition support from the seller, regulatory filings, and the transfer of records or operational data. Earn-out disputes are among the most frequently litigated aspects of post-M&A agreements. The drafting of measurement criteria, which metrics count, over what period, and how they are calculated, deserves careful attention from both sides.
Post-deal, consolidate entity records on one platform instead of spreadsheets.
The SPA Negotiation Process
Negotiating a share purchase agreement requires careful preparation and attention to detail throughout several distinct phases.
Pre-negotiation Preparation
Before negotiations begin, both parties should establish their objectives and identify potential deal-breakers. This preparation phase often involves:
Due Diligence Requirements
Due diligence is a critical step in which the buyer thoroughly investigates the target company. This process helps identify risks and informs the drafting of representations, warranties, and indemnities in the SPA.
During this phase, buyers typically examine financial records, contracts, employment agreements, litigation history, and regulatory compliance. The findings directly influence the final terms of the share purchase agreement.
Timeline Considerations
The period between signing and closing allows parties to satisfy conditions precedent. This timeline varies based on transaction complexity, regulatory requirements, and other factors specific to the deal.
Common Challenges in SPA Management
Managing share purchase agreements presents several challenges for legal teams throughout the transaction lifecycle.
Document Control Issues
With multiple stakeholders providing input and numerous revisions, maintaining version control becomes increasingly difficult. Legal teams often struggle to track changes and ensure all parties are working from the most current document.
Stakeholder Coordination
SPAs typically involve multiple parties, including legal counsel, financial advisors, executives, and subject matter experts. Coordinating their input and approvals requires significant effort, particularly when operating across different time zones or organizations.
Cross-border Complexities
International transactions introduce additional layers of complexity through different legal systems, regulatory requirements, and business practices. These differences affect everything from representations and warranties to closing conditions.
SPA management breaks down when documents, approvals, and communications live in different places. DiliTrust centralizes version control, stakeholder workflows, and secure document sharing into one platform, built for the complexity of M&A transactions. → See how DiliTrust handles SPA management.
Best Practices for Effective SPA Management
Implementing structured processes and leveraging appropriate tools helps legal teams manage SPAs more efficiently.
Establishing Clear Protocols
Developing standardized procedures for document review, approval workflows, and communication channels streamlines the SPA process. These protocols should define roles, responsibilities, and timelines for all stakeholders.
Implementing Robust Systems
Digital solutions provide significant advantages for managing complex legal documents like SPAs. Centralized platforms enable secure collaboration, version control, and audit trails throughout the transaction lifecycle.
How Technology Streamlines the SPA Process
Modern governance solutions transform how legal teams handle share purchase agreements, addressing many traditional challenges.
Digital Contract Management Benefits
Contract lifecycle management (CLM) systems provide a centralized repository for all transaction documents. These platforms offer:
AI is changing how legal teams manage contracts
Watch this 30-minute webinar replay to see the 5 contract bottlenecks slowing legal teams down and the practical controls that restore structure, accountability, and AI-assisted clause visibility.
Secure data sharing for due diligence
Virtual data rooms provide secure environments for sharing sensitive information during due diligence. These platforms protect confidential data while facilitating the exchange of necessary information between parties. For cross-border transactions, where your data is hosted and which legal framework governs it, has direct compliance implications, particularly under GDPR.
AI in contract review and SPA management
AI is now actively used by legal teams working on complex transactions. Purpose-built tools can scan incoming documents against internal playbooks to flag clause deviations, extract key data automatically, and summarize lengthy agreements before review. DiliTrust’s proprietary AI, Ask Lini, supports legal teams working through SPA negotiations by enabling natural-language queries across contract documents, identifying deviations from standard language, and generating document summaries on demand, without requiring data to leave a secure, GDPR-compliant environment.
As business transactions become increasingly complex, SPAs continue to evolve. Several trends are shaping their future development:
Artificial intelligence is already changing how legal teams draft and review these agreements, identifying risks and suggesting appropriate language based on transaction specifics.
The volume of transactions underlines how consequential SPAs remain. Global M&A value reached $3.0 trillion in 2025, up 31% year-on-year, according to BCG’s M&A Outlook 2026, driven by larger transactions across technology, healthcare, and industrial sectors.
Key Takeaways for Legal Teams
Share purchase agreements remain fundamental to successful business acquisitions. Their complexity requires careful attention from experienced legal professionals who understand both the legal framework and commercial implications of each provision.
By implementing structured processes and leveraging appropriate technological solutions, legal teams are able to manage SPAs more efficiently while reducing risk. This approach not only streamlines the transaction process but also provides greater protection for all parties involved.
For organizations seeking to optimize their approach to SPAs, the DiliTrust Suite offers a comprehensive solution that addresses the challenges of contract management throughout the transaction lifecycle. With secure document sharing, collaborative editing, and integrated workflows, DiliTrust helps legal teams navigate complex transactions with confidence.
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Frequently Asked Questions About Share Purchase Agreements
The buyer’s legal counsel typically prepares the first draft. Because buyers inherit all of a company’s liabilities in a share purchase, their team controls the initial terms, from indemnity caps to warranty schedules. The seller’s lawyers respond with redlines, and several rounds of negotiation normally follow before both sides reach an agreed version.
Conditions precedent are requirements that must be met before the deal can close. Common examples include competition authority clearances, foreign investment approvals, third-party consents (from lenders or key suppliers), and confirmation that no material adverse change has occurred in the target company. Until all conditions are satisfied, neither party is obligated to complete the transaction.
An earn-out is a deferred payment mechanism where the seller receives additional consideration after closing if the target company meets agreed performance targets, typically revenue or EBITDA milestones over a set period. Earn-outs are used to bridge valuation gaps when the two sides disagree on the company’s future value. They can be effective, but earn-out calculations are among the most disputed elements of post-M&A agreements, so drafting the measurement criteria precisely matters.
