Stock Purchase Agreement: What it Is and Steps to Write One
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A stock purchase agreement is a legal contract that governs the sale and purchase of shares in a company, specifying the transaction's terms and conditions. It is the basis of any equity-based transaction and summarizes the provisions the buyer and seller must know during the stock acquisition procedure. So, if you are an enterprise owner planning to share your company's stake, having an overview of the Stock Purchase Agreement is essential for safeguarding your interests and ensuring a seamless transaction.
Stock purchase agreements address the complicated legal issues that these types of transactions face. However, drafting the proper documentation will help you avoid legal pitfalls and future disputes. Contract drafting requires knowledge about how they work, what to include, and other vital details.
In this article, we’ve described stock purchase agreements and what you should know before drafting or signing one.
What is a Stock Purchase Agreement?
A stock purchase agreement, also known as an SPA, is a contract between buyers and sellers of company shares. This legal document transfers the ownership of stock and specifies the terms of shares bought and sold by both parties.
Other names for stock purchase agreements include:
Regardless of what you call your agreement, prioritize the drafting of the terms and conditions . A wrongly worded contract can create unintended legal consequences, which means that it’s essential to get this aspect right.
Steps to Write a Stock Purchase Agreement
You write a stock purchase agreement if you are the seller. Delegate this responsibility to your legal department to draft the terms and conditions. If you don’t have in-house or outside counsel, consider a virtual provider to help you through the legal drafting process.
Below, we’ve outlined a hypothetical example of how a stock purchase agreement works:
- Senpai Corporation sells stocks on the public corporation
- Argus Smith wants to purchase 1,000 shares from Senpai
- Senpai drafts a stock purchase agreement to formalize the transaction
- The SPA specifies that Mr. Smith will buy 1,000 shares
- The price is set according to the closing date of the transaction
- Smith agrees to complete his due diligence reporting within 30 days
- Both parties sign the agreement
- Senpai transfers the stocks to Mr. Smith
- Smith performs his due diligence audit and analysis
- He finds no problem and indicates as such in writing to Senpai
- The transaction is complete
Stock purchases are relatively straightforward transactions. However, there are legal issues to consider that are more complex, such as due diligence and timing, that you may want to discuss with securities lawyers , and they can offer guidance during the contract and transaction process.
What’s Included in a Stock Purchase Agreement?
Stock purchase agreements contain specific terms and conditions that set the relationship between buyers and sellers. The seller transfers and delivers all certificates from the transaction, and buyers reasonably expect one built on good faith. Creating a comprehensive stock purchase agreement will help parties avoid legal disputes and navigate their legal relationship.
These are the nine terms you may want to include in your stock purchase agreement:
- Parties and Agreement Date: The opening paragraph should include party names and agreement date, and it needs to communicate that both parties are entering into an agreement that doesn’t begin until the date specified. You do not have to make this section overly lengthy either.
- Price and Shares: This section contains information about the issuing corporation or shareholder, quantity, and each share’s value. The value of stock shares is usually set at market value on the day of closing.
- Purchase and Sale: Your contract needs a statement acknowledging that the seller transfers ownership of the stock certificates to the purchaser upon transaction completion. The seller must transfer all certificates while taking care of any applicable transfer taxes.
- Warranties and Representations: Buyers and sellers must work in good faith and fair dealing during a stock purchase and sale. Stock purchase agreements should verify the corporation’s good standing and bonafide ability to sell the stocks. Seller’s and buyer’s representations signify that no parties have made any errors or omissions and that the transaction is presented transparently and as communicated.
- Choice of Law: The corporation should establish the choice of law that will oversee a civil lawsuit should litigation arise. Otherwise, the purchaser could require you to travel to their state for meetings, hearings, and other legal proceedings. This situation can add time and expense to handling disputes with the other party.
- Payment Terms: Stock purchase agreements establish the terms under which the purchaser will pay the seller for shares of stock. This number is often a percentage paid upon contract signing, with the remaining balance paid upon final contract execution.
- Due Diligence: Most buyers need a due diligence period to inspect the seller’s and company’s financial records. They often have sole discretion regarding the validity of the shares for the intended sale. It is not unusual for sellers to require a due diligence report by a specific date.
- Closing Date and Time: The closing date and time is a reference to when the stock closing occurs. This date is essential for determining share price, and it usually occurs within a few days of signing the stock purchase agreement. Many contracts also include buyer and seller requirements to deliver tax forms and final closing statements before and after the transaction as negotiated in the agreement. You should discuss the closing date terms and conditions since this provision is more important than it appears.
- Signature and Date: The last section of your stock purchase agreement includes a signature and date line for both parties’ signing. Most stock purchase agreements do not require notarization, and a simple acknowledgment of the willful desire to enter into a contract is usually sufficient.
Importance of a Stock Purchase Agreement
Below are the key purposes of a stock purchase agreement:
- Offers Clarity and Certainty: The primary purpose of a stock purchase agreement is to offer unambiguous provisions for both parties concerned. By explicitly defining the purchase cost, payment provisions, and closing date, the contract reduces the threat of misinterpretations and conflicts during and after the transaction. It serves as a lawfully binding document that specifies the rights and obligations of each individual, ensuring shared knowledge throughout the process.
- Protects Rights and Interests: A well-written stock purchase agreement offers security to the purchaser by including representations and warranties from the seller. These assurances cover various aspects of the company, such as its financial health, legal compliance, and disclosure of liabilities. In case of any misrepresentation or breach, the buyer may seek remedies, such as compensation or rescission of the deal.
- Provides Regulatory and Legal Requirements: Stock purchase agreements ensure compliance with regulatory authorities and legal provisions controlling stock sales. Depending on the state, specific regulations and rules may apply, and the SPA can handle these prerequisites, including necessary approvals from regulatory bodies, shareholders, or antitrust authorities.
- Includes Non-disclosure and Confidentiality: Confidential information regarding the company being acquired is frequently involved in business transactions. Moreover, the stock purchase agreement incorporates confidentiality and non-disclosure provisions to safeguard this sensitive data from unauthorized sharing. It is especially vital when the customer investigates the organization's financials, agreements, and other proprietary details during due diligence.
- Ensures Smooth Transaction Process: Stock purchase agreements contribute to a smoother transaction process by addressing potential issues and contingencies upfront. The SPA outlines the conditions that must be met for the deal to close successfully, reducing uncertainty and streamlining the process of obtaining necessary approvals and fulfilling specific obligations before completion.
Types of Stock Purchase Agreements
Below are different types of stock purchase agreements:
- Simple Stock Purchase Agreement: This principal agreement summarizes selling a limited number of shares at a specified cost. It may comprise representations of warranties, and provisions precedent to the sale.
- Stock Purchase Agreement with Due Diligence: In more complicated deals, parties must perform due diligence before executing the agreement. This type of agreement comprises prerequisites for the buyer to perform due diligence analyses on the organization's financial and legal status.
- Asset Purchase Agreement with Stock Component: In some circumstances, a stock purchase agreement is part of a more extensive transaction, such as acquiring business assets and transferring them.
- Securities Purchase Agreement: This agreement is used when a business issues new shares of stock to investors, such as in a private placement or a venture capital investment. It includes terms related to the purchase of newly issued securities.
- Convertible Note Purchase Agreement: Convertible notes are often used in startup financing. This agreement outlines the terms of the convertible note, including the conditions under which it can be converted into equity.
- Stock Subscription Agreement: This is used when investors subscribe to purchase shares in a private placement offering. It outlines the subscription terms, such as the number of shares, purchase price, and closing conditions.
- Joint Venture Stock Purchase Agreement: In joint ventures, partners may acquire stock in the joint venture company. This agreement governs the purchase of shares by the joint venture partners and outlines their rights and obligations.
- Cross-Purchase Agreement: In closely-held corporations, shareholders may enter into cross-purchase agreements to facilitate the purchase of shares from a departing shareholder. This agreement outlines the process and terms for such purchases.
- Stockholder Agreement: While not a direct purchase agreement, a stockholder agreement may contain provisions related to the sale of shares among existing shareholders. It can specify rights of first refusal, drag-along rights, and other mechanisms for handling stock sales.
Who are the Parties in Stock Purchase Agreements?
The parties in a stock purchase agreement are the buyers and sellers of shares. Sellers are stock-issuing corporations or shareholders, and buyers are the ones who want to purchase stocks. Stock purchase agreements should expressly refer to the parties and their roles to make them legally binding.
Stock Purchase Agreement vs. Asset Purchase Agreement
Buyers and sellers use stock purchase agreements when they want to buy or sell stocks. They use asset purchase agreements when purchasing company assets, not through a merger or acquisition. Stock acquisitions, by nature, are also less expensive than asset purchases since they are not subject to additional taxes.
Here are a few other differences between stock purchase agreements versus asset purchase agreements below:
- Asset Purchase Agreements: Asset purchase agreements, also called buyer purchase agreements and APAs, outline the terms around the purchase of assets from a buyer to a seller. Buyers usually use them to acquire devalued company assets, allowing the buyer to increase the tax value of those assets, while the seller has the opportunity to liquidate them for cash or in exchange for other assets.
- Stock Purchase Agreements: Companies can use stock purchase agreements to purchase, sell, and transfer ownership over stocks and shares. Even though stocks are financial assets, asset purchase agreements do not sufficiently address the legal issues of a stock purchase. Always get legal advice from an attorney when you have questions.
Final Thoughts on Stock Purchase Agreements
Stock purchase agreements hold considerable importance in streamlining transparent and secure stock transactions. These lawfully binding agreements provide clarity, protect the rights and interests of buyers and sellers, address legal prerequisites, and ensure confidentiality to reduce risks and enhance the efficiency of business acquisitions.
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Garrett M.
Attorney Garrett Mayleben's practice is focused on representing small businesses and the working people that make them profitable. He represents companies in structuring and negotiating merger, acquisition, and real estate transactions; guides emerging companies through the startup phase; and consults with business owners on corporate governance matters. Garrett also practices in employment law, copyright and trademark law, and civil litigation. Though industry agnostic, Garrett has particular experience representing medical, dental, veterinary, and chiropractic practices in various business transactions, transitions, and the structuring of related management service organizations (MSOs).
"Though I found a few small mistakes that made me think he rushed a bit, he revised the agreement to be more in my favor. His expertise was well worth it."
William B.
Attorney based in Southern California (for in-person matters), taking clients globally/remotely for CA-specific and Federal legals needs. Owner and operator of Alchemist Attorney, Inc. (www.alchemistattorney.com).
"Will contributed insightful and precisely explained revisions for technical software licensing terms and I'm very satisfied with the result."
Daehoon P.
Daehoon P.
Corporate, M&A & Securities Lawyer | Managing Attorney, DP Counsel PLLC Practice Areas: Business Formation | Commercial Contracts | Contract Drafting & Review | Mergers & Acquisitions | Venture Capital | Securities Offerings | Franchise Law | Employment & Equity Compensation | Intellectual Property | Cross-Border Transactions About/Bio: I represent companies, investors, and fund sponsors in corporate transactions, commercial contracting, and private securities matters, from entity formation and early-stage financings to acquisitions, exits, and ongoing strategic counsel. As Managing Attorney of DP Counsel PLLC, I help clients structure transactions clearly, allocate risk thoughtfully, and move deals forward with documentation that is practical, enforceable, and aligned with business objectives. My practice includes both day-to-day commercial matters and more complex transactional work, including venture financings, private offerings, M&A deals, fund-related documents, and cross-border structuring. What I Do: Corporate & Commercial • Entity formation and structuring for corporations, LLCs, and limited partnerships • Operating agreements, shareholder agreements, and governance documents • Commercial contract drafting, review, and negotiation • Vendor, distribution, manufacturing, SaaS, and licensing agreements • Employment, consulting, confidentiality, and equity compensation agreements • Outside general counsel support for growing companies Securities & Private Capital • Private offerings under Regulation D and Regulation S • Private placement memoranda, subscription agreements, and investor documents • SAFE, convertible note, and priced equity financings • Venture capital and private fund formation matters • Fund governing documents and offering document packages • Securities law analysis for private capital raising transactions Mergers & Acquisitions • Letters of intent and term sheets • Stock purchase, asset purchase, and merger agreements • Due diligence coordination and transaction support • Disclosure schedules, closing documents, and post-closing matters • Earnouts, rollover equity, indemnity structures, and related deal terms • HSR, CFIUS, and related regulatory issue spotting for qualifying transactions Digital Assets & Emerging Technologies • Federal-law digital asset and token securities analysis • Entity structuring for blockchain and Web3 ventures • Digital asset fund and operating structures • AML/KYC documentation support and regulatory issue spotting Franchising • Franchise Disclosure Documents (FDDs) • Franchise agreements • Master franchise and area development agreements • Franchise structuring and registration coordination Real Estate Transactions • Commercial real estate acquisitions and dispositions • Real estate joint ventures and syndications • Commercial lease drafting and negotiation • Real estate investment structures and related offering documents Cross-Border & International • U.S. market entry and entity structuring for international clients • Delaware and multi-entity holding structures • Cross-border transaction planning and documentation • Coordination with foreign counsel and tax advisors on cross-border matters Why Clients Hire Me: • Big-law-level drafting with boutique responsiveness • Practical, business-focused advice grounded in execution reality • Clear scoping and transparent fee arrangements • Experience across financings, acquisitions, fund formations, and cross-border transactions Typical Projects: • Contract drafting and negotiation • Entity formation and governance packages • Private offering document suites • Venture financing documentation • M&A transactions from LOI through closing • Fractional or outside general counsel support Industries Technology | SaaS | FinTech | Digital Assets | E-commerce | Healthcare | Real Estate | Food & Beverage | Professional Services
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David U.
For the last 25 years I've focused on representing businesses and entrepreneurs in transactional law deals, including LLC creation, operation and sale of businesses; real estate sales and leasing; and general contract negotiation and drafting. While I've helped all manner of businesses work out a variety of contract and business matters, I am an expert at helping clients with buying and selling commercial properties including multi-family and office projects and buildings, subdivisions, and retail shopping centers. I am also a recognized expert negotiating leases for retail and office tenants and landlords. Over 25 years I've honed my skills a lawyer at one of the largest law firms in the world, an elite real estate boutique in Aspen, Colorado and a highly regarded firm based in Denver, Colorado, before starting my own practice in 2016. Since 2016 I've been helping my clients with real estate and business deals. I'm a commercial real estate and business expert with a passion for helping clients forge successful ventures in an efficient and understandable manner.
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Sam Y.
I am a Connecticut-licensed business attorney with over a decade of combined legal and business-operations experience, including roles as in-house counsel, Director of Operations & Compliance, and Director of Growth. I provide practical, business-focused legal solutions to entrepreneurs, small and mid-sized businesses, and investors who need a trusted advisor that understands both the legal and operational realities of running a company.
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Amos M.
Since 2008, I have worked to assist clients in solving problems and addressing challenges that inevitably arise as a business grows - both anticipated and unexpected. My experience in Georgia and Tennessee in both drafting contracts and enforcing them via litigation and/or arbitration has provided clients with unique insights that help them anticipate problems and inform their decisions from start to finish.
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I am an attorney licensed in Alabama and have been in solo practice for 7 years. I have experience in Contracts drafting and review, Litigation and Immigration practice areas. I am available for new projects.
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Stock purchase agreement and stock options?
I am a prospective buyer of a business and I am currently in the process of negotiating a Stock Purchase Agreement. As part of the agreement, I am interested in understanding what types of stock options may be available to me and what rights I may have as a shareholder. I am looking to understand the terms and conditions of the stock purchase agreement in relation to stock options before I move forward with the purchase.
Paul S.
It's impossible to answer your questions without actually seeing the documents and discussing them more in depth. I recommend that you post a job here, and hire someone to help you.
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I am looking to purchase stock in a company and need to understand the legalities of the stock purchase agreement. I have been asked to sign a stock purchase agreement and want to make sure that I understand the implications and the requirements of the agreement as well as the process for obtaining the stock certificates.
Paul S.
I suggest you post a job on Contracts Counsel for help with this.
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I am looking to purchase a company and have been presented a stock purchase agreement. I am also required to sign a stockholder representation letter. I am looking for advice on what these documents mean, how they are connected, and what rights and obligations they create for me as a potential buyer.
Thaddeus W.
Happy to discuss, but it looks like you might want to submit a formal request for bids.
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I am in the process of buying a business and have been asked to sign a Stock Purchase Agreement. I am concerned about the language in the agreement that includes a non-competition clause, and would like to understand the implications of signing the agreement and if there are any potential risks that I should be aware of.
Gregory F.
I would be happy to schedule a paid telephone consultation with you to review the non-compete (and any other provisions in the agreement), advise you on its scope and enforceability, and answer your questions. Please contact me via email at greg@fidlonlegal.com to discuss.
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I am currently a shareholder in a startup company and I am looking to purchase additional stock in the company. I am concerned about the termination rights associated with the stock purchase agreement, as I want to ensure that I am protected in the event of a dispute or termination of the agreement. I am looking for advice from a lawyer to ensure that my rights and interests are protected.
Merry K.
You can submit a request for a review through ContractsCounsel and WA State attorneys will bid on your job. You can also find WA State attorneys through wsba.org. I'm not able to review this kind of agreement myself, but my words of advice are to not put all your investment eggs in one basket - diversify your investments into real estate, stable and secure stock, etc. Too many people put all their money into the company they work for, and lose everything when their company goes bankrupt.
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