Business

Five Phases of a Deal from a Sell-Side Perspective: Due Diligence

December 22, 2021

By Michael N. Mercurio

You’ve signed your letter of intent (LOI). So what’s next? Now it’s time to roll up your sleeves as the real work on your sale begins. Due diligence commences. Prior to signing the LOI, you likely provided your buyer some limited financial diligence, enough that the buyer could determine to move forward and on what proposed terms. With the LOI execution, the buyer will now seek to learn much more about your business. Diligence will generally fall into three categories –financial, legal and operational. As a seller, the buyer will send you a very long and detailed diligence request list. Many times, this request list feels very overwhelming and beyond the scope of your business. This is intentional by the buyer. The buyer is casting a very large net in an effort to uncover and learn about your business in every aspect. Your approach to due diligence likely will require a new mindset. Diligence is opposite the natural inclination of entrepreneurs. Diligence requires disclosure of all things in your business –the good items and the not-so-good items. However, in all events, disclosure and diligence is the seller’s friend. Fully opening up your business in a complete and honest fashion allows the buyer to fully understand the mechanics of your business. The seller should not withhold or color any responses in an attempt to mitigate or spin matters. Rather, disclose what is requested and allow the buyer to ask its questions and make it own conclusions. No seller wants to be in a position where a buyer would revise its intentions had it known about an item (think fraud in the worst case). At times, a buyer will modify terms of the transaction (price, payment, etc.) based upon the diligence findings. While this is not usually positive for the seller (terms usually don’t get better), it is the opportunity for the parties to have open dialogue based on the same business knowledge. And remember, as a seller, diligence is a continuing process up until closing. It is not good enough to disclose and forget. Business is ever moving, and as items change in your business, the seller has the duty to update diligence to the buyer.

Anatomy of the Deal

5 Phases of a Deal from a SELL-SIDE PERSPECTIVE: The Players and Their Involvement

Pre- Transaction Planning

  • Phase Rule: Find and eliminate skeletons; create multiple options

Phase I: Letter of Intent

  • Phase Rule: Know what you want and get it in writing as the LOI may be your high water mark

Phase II: Due Diligence

  • Phase Rule: Disclosure is your friend

Phase III: Contracts

  • Phase Rule: Confirm Business terms and

Phase IV: Closing

  • Phase Rule: Time is your enemy

Phase V: Post Closing

  • Phase Rule: Remember to dot the I’s and cross the t’s to meet all conditions

Post-Transaction Planning

  • Phase Rule: Enjoy your new status in life; make sure you’ve considered life without the business

Sell Side M&A: Three Rules of Thumb for the Transaction

Rule #1: You haven’t sold your business until you’ve sold your business

Rule #2: Get your money upfront (as soon and as much as possible)

Rule #3: Reduce and eliminate your trailing liabilities

Categories: Business

Resources

Related People

Related Services

  • Overview
  • People
  • We Make Deals Happen®
  • Buy-Side FAQs
  • Sell-Side FAQs
  • M&A Blog
  • Press Releases
  • Announcements

Firm Highlights

  • Events
    The 2026 Economic, Tax, and Accounting Updates
    We are looking forward to the Mid-Atlantic CFO Roundtable's next event on November 13, 2026. This is a program with topics built for Finance Executives. We are extremely fortunate to have three excellent speakers: Dr. Daraius Irani, Vice President of Business and Public Engagement at Towson University; Mike Stankus, Tax Office Managing Principal at BDO; and Daniel Wahlberg, Managing Partner of Acclare Solutions. The economy is rapidly changing with various factors driving it. The November 3rd midterm elections may also have an impact. Our three expert presenters will discuss the ramifications of the election, and the current year updates to GAAP financial reporting and Federal and State income taxes. Please join us for what will surely be an informative and timely discussion. Meet Our Speakers: Daraius Irani, Ph.D. • Towson University Vice President, Business & Public Engagement Dr. Daraius Irani serves as Vice President of Business and Public Engagement at Towson University as well as the chief economist for the Regional Economic Studies Institute (RESI) at Towson University, a policy group providing economic, fiscal impact, and policy analysis to public and private entities.  Dr. Irani is often called upon to provide economic presentations to organizations across Maryland. He has appeared on numerous television programs and in local and regional print media. Dr. Irani holds a Ph.D. in economics from University of California, Santa Barbara. Dan Wahlberg • Acclare Solutions Managing Partner With over 28 years of experience, Dan Wahlberg is a recognized leader in audit and assurance for the Mid-Atlantic’s middle market business community. As a licensed CPA in Maryland and Virginia, Dan has led assurance practices at top regional firms, including serving as Baltimore Audit Managing Partner and Assurance Practice Leader at BDO USA in Baltimore and as Partner and member of the Management Committee at Hertzbach & Company P.A which merged into BDO in 2020. His expertise centers on delivering clarity, strategic guidance, and proactive solutions to middle-market businesses across Baltimore and beyond. His entrepreneurial spirit has led him to begin a new CPA firm this year with four other CPAs serving the business community. Dan holds a Bachelor of Science in Accounting from Rutgers University and began his career at PWC in New York. He is also deeply engaged in the community, previously serving as President of ACG Maryland and current Board member and as Audit Committee Member for The Associated: Jewish Federation of Baltimore.  Mike Stankus • BDO USA LLP Tax Office Managing Principal Mike Stankus is the Tax Office Managing Principal for the firm’s Baltimore office. He has more than 16 years of experience providing tax planning and preparation and management advisory services for his clients. Mike focuses on advising privately held businesses and their owners on effective growth and tax strategies. He also performs various engagements for mergers and acquisitions and complex cost accounting projects and projections. In addition, he represents various government contracting clients before the DCAA and assists with FAR compliance. Mike’s areas of concentration include working with government contractors, professional service firms, construction companies, and homebuilders.
  • Events
    AIA Tri-State Conference
    Princeton will serve as the backdrop for three days of connection, learning, and design leadership. From keynotes to tours to the Tri-State Design Awards, this year’s conference is designed to go far beyond education sessions. Kick off the week with pre-conference intensives and individual state component Design Award celebrations, followed by three days of education, inspiration, networking, and design excellence at the 2026 AIA Tri-State Conference—featuring pre-conference intensives, three keynote speakers, 25 education sessions, curated tours, an expo, spec academies, and the AIA Tri-State Design Awards—bringing together architects and design professionals from New Jersey, New York, and Pennsylvania to connect, learn, and celebrate the best of the profession. G2. Designing Secure Practices: Cybersecurity, Data Privacy, Contractual Provisions, and Insurance Risks for Architects (4:00 PM - 5:30 PM) Architects and design professionals increasingly rely on cloud platforms, BIM software, and digital tools to manage sensitive data, creating cybersecurity and privacy risks. A single incident can trigger liability claims, regulatory obligations, reputational harm, and insurance challenges. Yet many firms underestimate how contracts, insurance, and internal practices intersect during a breach. This program offers legal and insurance perspectives on cyber risk in architecture, examining liability exposure, risky contract provisions, and mitigation strategies. A cyber insurance expert will explain policy responses, coverage gaps, coordination with professional liability, and best practices for aligning insurance with contractual risk and protecting firms from evolving cyber threats. Learning Objectives: Identify key cybersecurity and data privacy risks faced by architecture firms and explain how these risks can impact professional liability and project outcomes. Analyze common contractual provisions to determine which clauses may increase exposure to cyber incidents and propose strategies to mitigate these risks. Evaluate the scope and limitations of cyber insurance policies, including coordination with professional liability coverage, to determine how a policy would respond in a breach scenario. Develop actionable risk management strategies by integrating legal, contractual, and insurance considerations to protect sensitive client and project data.