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The IPO Process, Step by Step

The journey from private company to publicly traded corporation is a structured, lengthy, and heavily regulated process. What appears to outsiders as a single "IPO event"—the day trading begins—is actually the culmination of months of planning, SEC review, investor preparation, and legal compliance. Understanding the IPO process step by step illuminates why going public is difficult, expensive, and not undertaken lightly. It also reveals the many decision points, regulatory hurdles, and stakeholder alignments required to succeed.

The IPO process typically unfolds over 3 to 6 months, involving dozens of advisors and hundreds of meetings. Each phase has specific deliverables, regulatory checkpoints, and moments where the entire transaction can derail. This chapter walks you through the complete journey: from the decision to go public through the quiet period, the roadshow, pricing, allocation, and finally the first trading day and lockup restrictions that follow.

Quick definition: The IPO process is the multi-month regulatory and market-driven sequence through which a private company transitions to public trading. It begins with underwriter engagement and SEC filing, continues through investor roadshows and price discovery, and concludes with pricing, trading commencement, and the enforcement of insider selling restrictions.

Key Takeaways​

  • The IPO process comprises seven distinct phases, each with specific deliverables and regulatory requirements
  • Underwriter selection is the first critical decision, determining the success or failure of the entire IPO
  • The SEC Form S-1 registration statement is the primary regulatory document, requiring rigorous disclosure of business risks and financials
  • The roadshow is a selling campaign where company management meets hundreds of institutional investors to gauge interest
  • Bookbuilding is the process through which underwriters solicit investor orders to determine final IPO pricing
  • The quiet period restricts company communications to prevent market manipulation or misrepresentation
  • The lockup period prevents insiders from selling shares for a set period (typically six months) after trading begins

Phase 1: Underwriter Selection and Engagement​

The IPO process begins informally when company leadership recognizes the strategic need to go public. Management engages investment banks and asks them to pitch their capabilities. This pitch process is highly competitive—the company will ultimately hire one or two lead underwriters plus a syndicate of supporting banks.

The lead underwriter (or lead underwriters, in a co-lead arrangement) bears significant responsibility and risk. It underwrites the IPO, meaning it commits to purchase all shares not sold to public investors, protecting the company against failed offerings. The lead underwriter also coordinates the entire process, manages the investor roadshow, conducts bookbuilding, and helps determine pricing.

Companies typically evaluate underwriters based on several criteria: track record with IPOs in their industry, the strength of their institutional investor relationships, the quality of their research analysts (whose coverage post-IPO influences valuation), and the prestige and brand value associated with their name. For tech companies, Goldman Sachs and Morgan Stanley are traditional heavyweights; for biotech, Jefferies and Piper Sandler often lead; for industrial companies, JPMorgan and Bank of America dominate.

The company also negotiates underwriting fees (typically 3–4% of gross proceeds for traditional IPOs, though fees have compressed to 1–2% for mega-deals). The underwriter agreement memorializes the underwriter's commitments, compensation, and obligations.

Once underwriters are selected, the real work begins.

Phase 2: Due Diligence and S-1 Preparation​

Parallel to underwriter engagement, the company engages experienced securities counsel (law firms specializing in capital markets), Big Four auditors (if not already in place), and other advisors. This team begins the monumental task of preparing the SEC Form S-1 registration statement.

The S-1 is the comprehensive disclosure document that tells investors everything material about the company. It includes:

  • Business description — What the company does, its value proposition, competitive position, and market opportunity
  • Risk factors — Itemized discussion of every material risk (regulatory, competitive, operational, financial, etc.)
  • Financial statements — Two years of audited balance sheets, income statements, and cash flow statements, plus quarterly unaudited data
  • Management discussion and analysis (MD&A) — Management's narrative explanation of financial performance and future prospects
  • Executive compensation — Detailed disclosure of how the CEO, CFO, and other top officers are compensated
  • Capitalization table — Complete cap table showing all share classes, outstanding options, and founder holdings
  • Underwriter conflicts of interest — Disclosure of relationships between the underwriter and company insiders
  • Legal proceedings — Any material litigation, regulatory investigations, or disputes

Preparing a high-quality S-1 is a 12-16 week effort involving extensive interviews with management, accountants, and engineers. The team must translate complex technical or operational realities into clear, balanced disclosure. The tone must be professional and factual—no marketing hyperbole, no unstated assumptions, no undisclosed material risks.

The SEC reviews the S-1 through a formal comment process. The staff issues a comment letter identifying areas of insufficient clarity, incomplete disclosure, or concern. The company and its counsel respond, and this iterative review continues until the SEC is satisfied.

During due diligence, the underwriter also conducts its own investigation. Underwriters perform financial audits, operational due diligence, market research, and legal review to satisfy themselves that the company is suitable for public markets and that disclosure is accurate. This underwriter due diligence is conducted partly to inform pricing and partly to protect against liability if the company misrepresents itself.

Phase 3: SEC Filing and Comment Period​

Once the S-1 is substantially complete, the company files it with the SEC's Division of Corporate Finance. The SEC staff then has 30 days to issue an initial comment letter. This comment letter often contains dozens or hundreds of questions and requests for clarification.

Common SEC comment areas include, as detailed in SEC rulemaking guidance:

  • Risk disclosure clarity — The SEC wants risks stated specifically and quantitatively when possible, not generically
  • MD&A completeness — The SEC requires management to explain all material changes in financial performance
  • Accounting policy disclosure — Clear explanation of how the company recognizes revenue, values inventory, calculates depreciation, etc.
  • Related party transactions — Disclosure of any transactions with insiders, founders, or entities they control
  • Customer/revenue concentration — If a small number of customers represent a large portion of revenue, this must be highlighted
  • Key metrics and non-GAAP measures — If the company uses non-standard financial metrics, these must be clearly defined and reconciled to GAAP

The company responds to each comment, either by revising disclosure, providing additional explanation, or respectfully disagreeing with the SEC's concern (rare). The SEC then issues a second comment letter (and sometimes a third) until it is satisfied.

This comment and response cycle typically takes 60–90 days, though complex cases can extend longer. During this period, the S-1 cannot be finalized, and the company remains in a "confidential" filing status (though major underwriters and institutional investors may have access to drafts).

Phase 4: Acceleration Request and Public Filing​

Once SEC comments are resolved and the company and its auditors are satisfied with the S-1, the company requests SEC acceleration of the registration statement. This acceleration request asks the SEC to deem the S-1 effective immediately, allowing trading to begin without further regulatory delay.

At roughly the same time, the company files the final S-1 publicly, making it available to all investors. The company also distributes the preliminary prospectus—a near-final version of the S-1 that omits the final IPO price and share count (since these have not yet been determined).

The preliminary prospectus is sometimes called the "red herring" prospectus (because a red herring stamp historically appeared on copies). This document kicks off the formal "quiet period" that restricts communications.

Phase 5: The Quiet Period​

The quiet period is a regulatory quiet period governed by FINRA, SEC, and securities law. During this approximately 25-day window, the company and its underwriters cannot engage in activities that could be seen as conditioning the market or manipulating demand.

Specifically, the quiet period restricts, as detailed in FINRA Rule 2711:

  • Company management from discussing forward-looking strategy, growth projections, or product pipelines in interviews, public appearances, or investor meetings outside the roadshow
  • Press releases and marketing touting the company or its prospects
  • Research reports from the underwriter's analysts (the underwriter can only publish research after the IPO is priced and trading begins)
  • Public discussion of the IPO process itself

The quiet period is intended to prevent information asymmetry. Without it, the underwriter could leak favorable information to preferred clients, or management could conduct a selective roadshow touting the company to some investors but not others.

Violations of the quiet period can result in SEC enforcement, underwriter sanctions, or (in severe cases) IPO delay or cancellation. In practice, the quiet period is monitored carefully by company counsel and the underwriter's compliance team.

Phase 6: The Roadshow and Bookbuilding​

Sometime after public filing but within the quiet period, the roadshow begins. The roadshow is a multi-week investor marketing campaign in which company management (usually the CEO and CFO) travels to major cities, meets with institutional investors and investment professionals, and pitches the company's investment merits.

The typical roadshow involves 60–100 investor meetings across 10–15 cities (the major financial centers: New York, Boston, San Francisco, Los Angeles, London, etc.). Each meeting involves 4–8 institutional investors—mutual fund managers, hedge fund partners, pension fund portfolio managers. Some meetings are one-on-one with large, important investors; others are group presentations.

Management delivers a standard pitch, usually 20–30 minutes, followed by Q&A. The pitch covers the company's market opportunity, competitive advantages, business model, unit economics, growth strategy, and financial projections. Investors ask hard questions about competition, capital intensity, path to profitability, and execution risk.

The roadshow serves multiple purposes. For the company, it builds awareness, gauges investor appetite and concerns, and allows management to refine the story based on feedback. For investors, it provides direct access to management for detailed diligence and the ability to assess management competence and credibility.

Simultaneously with the roadshow, bookbuilding occurs. The underwriter solicits investor orders for IPO shares. An investor might say, "We are interested in 500,000 shares at $18 per share" or "We would buy 2 million shares if the price is between $15 and $20." These indications of interest are aggregated into a "book" showing demand at various price points.

The bookbuilding process is not binding—investors can change their indications or withdraw them. But it provides crucial intelligence. If demand at $20 per share is 50 million shares but the company only plans to issue 10 million shares, the IPO is significantly underpriced. If demand at $20 is only 5 million shares, the IPO may be overpriced, and the underwriter will likely lower the price range.

Bookbuilding is an art as much as a science. Underwriters are incentivized to build a "good" book: one with strong demand from high-quality institutional investors at a price high enough to satisfy the company but not so high that the stock falls sharply on the first day (which reflects poorly on the underwriter's pricing judgment). Underwriters may also favor larger orders from institutions that will hold the stock long-term rather than flip it for quick trading gains.

Phase 7: Pricing and First Trading Day​

After the roadshow and bookbuilding process, the company and underwriter determine the IPO price. This decision is made by the company's board (on the company's side) and the underwriter's pricing committee (on the underwriter's side).

The pricing is informed by underwriter analysis, investor demand from the book, comparable company valuations, and current market conditions. The underwriter presents a fairness opinion, outlining why the selected price reflects fair value. The board of directors ultimately approves the pricing.

The IPO price is announced after market close on the day before trading begins. Once the price is set, the final prospectus is published, showing the IPO price and number of shares to be issued. For example, "4 million shares at $22 per share" raising $88 million (before underwriting fees).

On the first trading day, the stock begins trading on the designated exchange (NYSE or NASDAQ). Initial trades often occur at a premium to the IPO price as pent-up demand from investors who didn't receive allocations begins to manifest. A company that prices at $20 might open at $24 or $28 on the first day.

This first-day "pop" or "flop" reflects market demand relative to supply. A large pop may indicate the IPO was underpriced or the company's story resonates strongly. A large decline suggests the opposite. Over the first few weeks, normal trading volume establishes a more stable price.

The Lockup Agreement and Post-IPO Restrictions​

Once trading begins, company insiders face lockup agreements. These contracts typically prevent founders, executives, and employees from selling any shares for six months (though some lockups extend 12 months or longer).

Lockup agreements are imposed by the underwriter to prevent massive insider selling immediately post-IPO, which would tank the stock and devastate the underwriter's reputation. They also signal to the market that insiders believe in the company's long-term prospects (you don't lock up shares in something you don't believe in).

On the lockup expiration date (typically 180 days after IPO trading begins), insiders are free to sell. This often creates a wave of insider selling as executives and employees diversify holdings. Stock prices frequently decline around lockup expiration as shares hit the market, though this varies based on company performance and broader market conditions.

The lockup agreement represents a real economic constraint on early shareholders. A founder who was worth $100 million at IPO pricing must hold that position for six months despite market volatility, company-specific risks, or personal financial needs.

Real-World Examples​

Google's 2004 IPO proceeded remarkably smoothly. Filed in April, priced in August at $85, and began trading. The company demonstrated strong financials, a clear competitive moat in search, and favorable market conditions. The roadshow covered global investors. First-day trading was notably restrained (up just 18%), reflecting disciplined underpricing and solid execution across phases 1–7.

Facebook's 2012 IPO stumbled at the critical phase 7. Priced at $38 on Friday, May 18, the stock was set to begin trading Monday, May 21. However, NASDAQ experienced technical glitches, and the first-day opening was delayed. When trading did commence, the stock barely moved on the official opening but fell sharply in subsequent trading. Underwriters supported the stock to prevent a complete collapse. Weeks of weakness followed, causing lockup expiration six months later to compound investor losses. Poor execution in the IPO pricing and first-day support damaged Facebook's reputation.

Alibaba's 2014 IPO was the largest IPO ever at the time, raising $25 billion. The roadshow was globally comprehensive, with meetings across Asia, Europe, and North America. Demand was exceptional, and the stock priced at $68 per share, at the high end of the range. First-day pop was substantial (38%), reflecting strong demand. The company's financial strength, Jack Ma's founder story, and China's growth prospects drove enthusiasm.

Uber's 2019 IPO is a case study in overpricing and high expectations. Priced at $45, the stock immediately disappointed, falling below the IPO price within weeks. The company's path to profitability was unclear, and market conditions deteriorated mid-year. The roadshow was extensive but failed to resolve investor skepticism about the unit economics of ride-sharing. This IPO demonstrates that even the most famous, best-capitalized companies can struggle with IPO execution.

Airbnb's 2020 IPO succeeded despite pandemic uncertainty. The company priced at $68 after demonstrating resilience post-COVID. First-day demand was exceptional (stock opened at $146, a 115% pop), reflecting scarce IPO inventory and retail investor enthusiasm. The broader sentiment toward growth stories in late 2020 supported successful execution across all phases.

Common Mistakes and Misconceptions​

Underestimating SEC comment cycles — Many companies underestimate the time and effort required to resolve SEC comments. The S-1 is not a static document; it evolves through numerous iterations. Companies that assume quick SEC approval are often disappointed.

Confusing quiet period restrictions — Some executives are surprised to learn they cannot discuss the company or its prospects during the quiet period. This is intentional, but companies often fail to brief management adequately on restrictions.

Misunderstanding investor indications — Investors' indications of interest during bookbuilding are not commitments. They can change as roadshow information surfaces or market conditions shift. Companies that assume high indications guarantee strong demand are often disappointed by mid-book pressure to lower pricing.

Expecting first-day trading to reflect true value — The IPO price and first-day trading are not the "true value." They reflect supply, demand, emotion, and information asymmetry at a specific moment. Real market prices emerge over weeks and months of trading.

Overweighting lockup as a catalyst — Some investors believe lockup expiration will meaningfully impact stock price. In reality, the impact varies enormously based on fundamental performance and market conditions. Some stocks rise through lockup expiration; others fall.

Assuming IPO success = market success — Successfully executing the IPO (raising capital, starting trading) is not the same as building a successful public company. Many IPOs that execute well find themselves struggling within two years as market dynamics shift.

FAQ​

Q: Why does the IPO process take so long? A: SEC review, underwriter due diligence, investor roadshows, and bookbuilding all take time. The process is designed to be thorough; rushing creates risk of disclosure gaps or mispriced offerings.

Q: Can a company fire its underwriter mid-process? A: Technically yes, but it is rare and highly disruptive. The underwriter has made commitments and incurred costs. Firing mid-process damages the company's reputation with other underwriters.

Q: What happens if the IPO price is set but demand collapses overnight? A: The underwriter has committed to underwrite the IPO at the set price. If demand collapses, the underwriter must purchase unsold shares. Large collapses are rare, but when they occur, they result in significant underwriter losses.

Q: Can insiders buy stock during the IPO? A: Yes, though they often don't. Insiders typically allocate capital to the S-1 preparation process rather than buying IPO shares. Some executives do purchase shares to demonstrate confidence.

Q: How is the IPO price range determined? A: The underwriter, company management, and board collaborate. The underwriter conducts comparable company analysis, uses valuation methodologies (DCF, precedent transactions), and considers market conditions. The range is typically 25–50% wide to accommodate bookbuilding feedback.

Q: What if the company's business materially deteriorates between S-1 filing and pricing? A: The company must amend the S-1 to disclose this information. This could delay pricing or necessitate a price reduction. In severe cases, the company may withdraw the IPO entirely.

Q: Can retail investors buy during the roadshow? A: No. Roadshow meetings are limited to qualified institutional investors and high-net-worth individuals. Retail investors can only participate through public trading once the IPO commences.

Summary​

The IPO process unfolds through seven critical phases: underwriter selection, S-1 preparation, SEC filing and comment, acceleration request and public filing, the quiet period, roadshow and bookbuilding, and finally pricing and first trading. Each phase involves distinct deliverables, regulatory checkpoints, and decision points where failure is possible.

The process is deliberately lengthy and rigorous—typically 3–6 months—because it serves fundamental purposes: ensuring investors have material information, preventing market manipulation, and allowing companies and underwriters time to properly assess valuation and demand. Companies that approach the IPO process as a purely mechanical exercise often encounter friction; those that treat it as a comprehensive discipline of disclosure, diligence, and investor engagement typically execute more successfully.

The roadshow and bookbuilding process is central to IPO success, allowing management to directly engage institutional investors and underwriters to aggregate demand signals that inform final pricing. Pricing is ultimately a negotiation between company interests (maximizing capital raised) and market conditions (determining what investors will actually pay).

Post-IPO, lockup agreements restrict insider selling for six months, protecting the market from flood-selling and signaling insider confidence. The first day of trading often witnesses price movement reflecting initial supply-demand imbalances, but true market price emerges only through weeks and months of subsequent trading.

Next​

Move to Roadshow and Bookbuilding to understand in detail how underwriters and companies engage investors to assess demand and build the shareholder base.