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Capital markets

Initial public offering

Prepare the company, disclosures, governance, valuation and offering mechanics required to sell shares to public investors and operate as a listed issuer.

Quick answer

An initial public offering, or IPO, is the first registered public offering and sale of a company's shares. A typical underwritten IPO involves an issuer, selling shareholders where applicable, underwriters, legal counsel, auditors, regulators and a stock exchange. The process includes readiness, due diligence, audited financial information, a registration statement or prospectus, regulatory review, investor marketing, pricing, allocation, settlement and ongoing public-company obligations.

Use the worked example

Meaning and transaction use

The SEC describes an IPO as the first time a company offers shares to the general public and explains that a registered offering typically uses a registration statement such as Form S-1. [S1]

The registration statement includes a prospectus with information about the business, financial condition, management, risks and offering terms; SEC review does not approve the merits or guarantee completeness or accuracy. [S1]

IPO readiness also covers governance, reporting, controls, investor relations, exchange requirements, capital structure, lock-ups and the intended use of proceeds.

Worked example

Illustrative primary IPO only. Assume the company sells 10.0 million new shares at 12.00 each, the underwriting discount is 6.0% of gross proceeds, other issuer expenses are 2.8 million, and 40.0 million shares are outstanding before the offering.

Scroll the table horizontally to view all columns.

MeasureCalculationResult
Gross primary proceeds10.0m x 12.00120.0m
Underwriting discount120.0 x 6.0%7.2m
Illustrative net proceeds120.0 - 7.2 - 2.8110.0m
Post-offering shares40.0 + 10.050.0m
New-share ownership10.0 / 50.020.0%
Illustrative market capitalisation at offer price50.0m x 12.00600.0m

The illustrative company receives 110.0 million before any omitted costs or taxes, and the new shares represent 20.0% of post-offering shares. The 600.0 million market capitalisation is an equity-market measure, not issuer proceeds or enterprise value.

Proposed transaction review process

Assess readiness

Confirm strategy, financial history, governance, controls, management capacity, legal structure and listing eligibility.

Prepare disclosure and diligence

Build the prospectus, audited financial information, risk factors, material contracts and verification record.

Structure and market the offer

Set primary and secondary shares, valuation range, use of proceeds, underwriting, marketing and allocation approach.

Price, settle and operate publicly

Complete approvals and settlement, then execute reporting, controls, investor relations and governance obligations.

Evidence checklist

Corporate and governance

Constitutional documents, ownership, board records, policies, committees and management biographies.

Financial and operating

Audited statements, controls, KPIs, forecasts, tax, working capital and capital requirements.

Legal and disclosure

Material contracts, litigation, regulation, intellectual property, risk factors and verification support.

Offering evidence

Capitalisation, share classes, price range, underwriting terms, expenses, selling holders and use of proceeds.

Decision framework

SituationProposed action
Financial reporting is not readyResolve audit, control and reporting gaps before committing to a filing timetable.
The valuation range lacks supportReconcile operating evidence, comparables, investor feedback and dilution across scenarios.
Primary proceeds do not fund the planRevise the offer size, uses, financing mix or operating plan with disclosed assumptions.
A material disclosure remains unresolvedDelay the affected step until the responsible advisers and company approve complete support.

Common errors to check

  • Treating SEC effectiveness or exchange approval as endorsement of the investment.
  • Confusing gross proceeds, net proceeds, market capitalisation and enterprise value.
  • Ignoring dilution, selling-shareholder proceeds, lock-ups or post-listing obligations.
  • Setting a timetable without audited financials, controls, governance and disclosure readiness.

Test IPO readiness and proceeds

Bring the equity story, audited financials, governance plan, capitalisation, valuation work and use-of-proceeds schedule to an IPO readiness review. Identify filing dependencies, dilution and public-company operating gaps before setting the execution timetable.

Discuss the transaction

Primary references and editorial scope

  1. US SEC, Investor Bulletin: Investing in an IPO
    IPO definition, registration statement, prospectus, SEC review and investor disclosure context. Reference checked 17 September 2026.
  2. US SEC, Going Public
    Registered public offering process and post-IPO reporting obligations in the United States. Reference checked 17 September 2026.
Editorial qualification

General capital-markets education with United States regulatory examples. Figures are hypothetical. Offering, disclosure, listing, marketing and investor-protection requirements depend on the issuer, securities, exchange and jurisdictions.

General business information. Obtain advice appropriate to the legal, tax, accounting and financing facts. No offer, lender commitment or transaction outcome is represented. All worked examples use expressly assumed figures. Editorial draft date: 17 September 2026.

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