By the MFI Editorial Team | Last verified: June 2026
Why the S-1 Is the Only Document That Matters
When a company prepares to go public, it files an S-1 registration statement with the SEC. This document is the one place where the company, its lawyers, and its underwriters are legally required to tell you the truth — including the parts that are uncomfortable.
The investor presentation, the CNBC appearances, the newsletter coverage, and the analyst notes are all marketing. The S-1 is the legal record. When there is a conflict between what the CEO says on television and what the S-1 says in the Risk Factors section, the S-1 is the version the company will point to if you ever sue them.
Every S-1 is publicly available on the SEC's EDGAR database at no cost. For any upcoming IPO, search the company name at sec.gov/cgi-bin/browse-edgar and look for the S-1 or S-1/A (amended) filing.
What to Read First: Risk Factors
Counter-intuitively, the Risk Factors section is the most useful part of the S-1 for a retail investor. This section is written by lawyers who have strong professional incentives to disclose every material risk — because failure to disclose a known risk that later materializes is securities fraud liability.
What to look for in Risk Factors:
- Customer concentration. “One customer accounted for X% of our revenue” is a genuine business risk that the marketing materials will never mention.
- History of losses and no guarantee of profitability. Almost every growth company IPO includes this language. What matters is whether there's a credible path to profitability described elsewhere in the document.
- Regulatory risks. Industries facing active regulatory scrutiny — healthcare, fintech, crypto, AI — will describe specific pending regulations that could affect the business model. Read these carefully.
- Key person dependency. “Our success depends on the continued services of our founder/CEO” indicates the business may not be durable without specific individuals.
- Competition from better-funded players. If the company lists Amazon, Google, Microsoft, or Apple as potential competitors, understand what that means for long-term margin sustainability.
What to Read Second: The Financial Statements
The financial statements in an S-1 cover at minimum two years of audited history, sometimes three. The most important figures for growth company evaluation:
Revenue growth rate. Calculate the year-over-year growth rate for each period shown. More importantly, is the growth rate accelerating (getting faster each year) or decelerating (slowing down)? A company growing 80% per year that was growing 150% the year before is decelerating. That trajectory matters more than the current headline number.
Gross margin. Revenue minus cost of revenue, divided by revenue. Software businesses should have gross margins above 60%; many have margins above 70–80%. Gross margin below 40% in a software company is a red flag. Hardware and marketplace businesses have structurally lower margins — compare against industry peers, not software benchmarks.
Operating loss and burn rate. Most IPO-stage growth companies are losing money. The question is the burn rate relative to the cash raised and the trajectory toward profitability. A company burning $20M per quarter with $200M in the bank after IPO proceeds has a clear runway. A company burning $50M per quarter with the same cash position does not.
The Lock-Up Expiration: The Detail Most Retail Investors Miss
Every IPO includes a lock-up agreement — a contractual restriction preventing insiders (founders, employees, early investors) from selling their shares for a defined period after the IPO, typically 90 to 180 days.
When the lock-up expires, insiders who received shares at a fraction of the IPO price can sell. If the stock has appreciated since IPO, this creates significant selling pressure at a predictable date. Many stocks decline meaningfully around lock-up expiration as this supply hits the market.
The lock-up expiration date is disclosed in the S-1. Mark it on your calendar before you buy. Understand that you may be buying shares from insiders who received them at $0.50 when you're paying $25.
Use of Proceeds: Where Your Money Is Actually Going
The Use of Proceeds section tells you what the company plans to do with the money raised in the IPO. This matters because it tells you whether the business needs the capital to survive or is raising opportunistically.
Red flags: “general corporate purposes” with no specificity, paying off existing debt (you're providing an exit for prior creditors, not funding growth), and insider secondary sales (existing shareholders selling their shares to you rather than the company raising new capital).
Green flags: specific growth investments (geographic expansion, R&D programs, specific acquisitions) with credible explanations of how they connect to the growth thesis.
What We Verified for This Article
S-1 filing location and structure described here reflects SEC EDGAR filing standards as of publication. Financial metrics and benchmarks reflect general industry standards for growth company analysis — sector-specific benchmarks vary. Lock-up period ranges reflect common practice; specific terms vary by deal. Always read the actual S-1 for any specific IPO you are considering — this guide describes the framework, not any specific company.
Last verified: June 2026 | Category: IPOs & Hidden Gems | Investor Guides