The Anatomy of a Deal

Most investment banking deals follow the same arc: win the mandate and sign an engagement letter, prepare valuation and marketing materials such as a teaser and confidential offering memorandum, market to buyers or investors under confidentiality agreements, run diligence, negotiate definitive terms, and satisfy closing conditions and filings. Bankers coordinate a cast that includes the client's management, lawyers, accountants and the counterparties' advisers.

Stage 1: Mandate and engagement letter

A deal begins when a client decides to act and hires a bank. On a sale, FINRA's outline of an investment banker's knowledge starts with preparing, negotiating and finalizing the engagement letter with the seller, then reviewing possible transaction structures, such as a whole-company sale, divestiture or spinoff, stock versus asset sale, and merger versus tender offer ^[1]. Private placements have a parallel step: drafting engagement documentation and the placement agent agreement ^[1]. The engagement letter sets scope, fees, exclusivity, expenses and termination terms, which is why the previous lesson's fee checklist matters here.

Stage 2: Preparation and materials

Before anyone outside the company hears about the deal, bankers do the analytical work: valuation using a variety of methods and an extensive analysis of potential buyers, including their capacity to pay ^[1]. Then come the marketing documents:

• Teaser: a short business profile highlighting the corporate overview and financial history, sent to potential buyers ^[1]; in financings, an executive summary or one-page document describing the opportunity ^[1].
• Confidentiality agreement (NDA): signed before detailed information is shared ^[1].
• Confidential information or offering memorandum (CIM): the detailed confidential offering document presented to potential buyers and merger partners ^[1]. In a private placement, the equivalent is the private placement memorandum (PPM), alongside term sheets ^[1].
• Registration statement and prospectus: in a registered offering, the company files a registration statement, typically on Form S-1, whose prospectus describes the company and the offering terms ^[2].

Stage 3: Marketing and bidding

In an M&A sale, bankers contact potential buyers, collect signed NDAs, distribute a bidding procedures letter and help draft management presentations ^[1]. Buyers submit non-binding indications of interest (IOIs); bankers evaluate them from strategic and financial angles, invite some to continue, and later issue final-round procedures that include a deadline for final offers and guidance on letters of intent ^[1]. In an IPO, the equivalent is the road show and book building: underwriters help set up investor meetings and build an "order book" of indications of interest that lists how many shares each investor wants and at what price ^[1][2].

Private offerings carry marketing limits. Under Rule 506(b) of Regulation D, a company can raise an unlimited amount and sell to unlimited accredited investors but generally may not use general solicitation, and may sell to no more than 35 non-accredited investors in any 90-day period ^[3].

Stage 4: Due diligence

Diligence is where buyers and investors test the story. On a sale, bankers help the seller gather materials, set up the data room and its index, monitor access, and coordinate management presentations and site visits ^[1]. In public and private offerings, bankers identify the information that must be disclosed by reviewing financials and business plans, speaking with management, vendors, suppliers and customers, conducting site visits and performing "bring-down" diligence ^[1]. When a broker-dealer recommends a private placement, FINRA reminds members they must conduct a reasonable investigation of the issuer and the securities, with more thorough investigation needed for smaller companies of recent origin and further inquiry required when red flags appear ^[5].

Stage 5: Signing, approvals and closing

Once buyers are selected for final negotiations, the parties work toward definitive agreements, with bankers helping communicate the agreed financial terms to the client's legal counsel and accountants ^[1]. A board may request a fairness opinion ^[1]; if it will be shared with public shareholders, FINRA Rule 5150 sets disclosure requirements, including any contingent compensation ^[6]. Between signing and closing, bankers help track closing conditions and prepare announcements ^[1]. Larger deals may require premerger notification under the Hart-Scott-Rodino Act, which bankers are expected to understand ^[1]; the FTC's 2026 adjusted thresholds, effective February 17, 2026, set the basic size-of-transaction test at $133.9 million ^[7].

Capital raises have their own filings. An IPO cannot proceed until the SEC declares the registration statement effective, and existing shareholders often agree not to sell for a period after the IPO under a lock-up agreement, typically 180 days ^[2]. In a Rule 506(b) private placement, the company must file Form D with the SEC within 15 days after the first sale ^[3]. A FINRA member that sells a private placement must generally file the offering documents with FINRA, or notify FINRA that none were used, within 15 calendar days of the first sale ^[4].

Who is in the room

• Client management and board: make the decisions, provide information and own the disclosures.
• Investment bankers: run the process, value the business, prepare materials, manage buyers or investors and negotiate economics.
• Legal counsel for each side: draft and negotiate agreements and handle regulatory issues; bankers coordinate with the client's legal and tax advisers on antitrust and tax questions ^[1].
• Accountants: audit or review financial statements; IPO prospectuses include the independent auditor's opinion ^[2].
• Counterparties and their advisers: buyers, investors or underwriting syndicate members.

Key terms

Engagement letter

The contract hiring the bank, setting scope, fees, exclusivity, expenses and termination.

Teaser

A short, often anonymous profile used to gauge interest before confidential information is shared.

Confidential information memorandum (CIM)

The detailed confidential offering document given to qualified buyers after they sign an NDA.

Private placement memorandum (PPM)

The offering document for an unregistered securities offering.

Indication of interest (IOI)

A non-binding early bid or order indicating price or size.

Letter of intent (LOI)

A document setting out the main terms of a proposed deal before definitive agreements, usually largely non-binding.

Data room

A controlled repository, now usually virtual, where diligence materials are shared with bidders.

Lock-up agreement

An agreement by existing holders not to sell shares for a period after an IPO, typically 180 days.

Check your understanding

Sources

1. [1]FINRA, “Investment Banking Representative Qualification Exam (Series 79) Content Outline,” 2025.
2. [2]U.S. Securities and Exchange Commission, Office of Investor Education and Advocacy, “Investor Bulletin: Investing in an IPO,” February 2013.
3. [3]U.S. Securities and Exchange Commission, “Private Placements - Rule 506(b),” September 21, 2026.
4. [4]FINRA, “5123. Private Placements of Securities,” Accessed November 2026.
5. [5]FINRA, “Regulatory Notice 23-08: FINRA Reminds Members of Their Obligations When Selling Private Placements,” May 9, 2023.
6. [6]FINRA, “5150. Fairness Opinions,” Accessed November 2026.
7. [7]Federal Trade Commission, “Current Thresholds,” Accessed November 2026.

Educational content only — not legal, tax, or investment advice, or an offer to sell or a solicitation of an offer to buy any security. Rules and data are described as of November 2026 and may change. Securities offered through Umergence LLC, Member FINRA/SIPC.