| Section | What to read | Why it matters |
|---|---|---|
| Risk Factors | First 5-10 risk-factor items are management's prioritized list | What the company itself thinks could go wrong — often more honest than the marketing |
| MD&A | 5-year financial history; cohort tables (for SaaS/consumer); unit economics | Whether the growth is durable or financed-by-burn |
| Use of Proceeds | Explicit line items vs 'general corporate purposes' | Whether management has a capital-deployment plan |
| Principal Stockholders / Lockup | Founder + VC stakes; lockup expiry dates; dual-class structure | Secondary-supply schedule; voting control |
| Underwriters & Stabilization | Lead bankers; greenshoe option; price-stabilization arrangements | How much price support is engineered for the first 30 days post-IPO |
The lockup period (typically 180 days for IPOs, shorter for direct listings) creates a known supply event. Insider sales pressure peaks in the 30 days before and after lockup expiry. For IPOs that traded UP in their first 6 months, lockup expiry often produces a 10-20% drawdown as VCs and pre-IPO investors monetize. For IPOs that traded DOWN, lockup expiry is sometimes the bottom — sellers are already exhausted. The lockup-expiry date is in the prospectus; mark it on your calendar.
The S-1's risk factors are written by securities lawyers, not management. They're optimized to be COMPREHENSIVE (everything a plaintiff could later claim was undisclosed) not PROPORTIONATE (the actual likelihood of each risk). Reading the risk factors will leave you feeling that no public company can possibly succeed. The skill is calibrating which 3-5 risks are LIVE — usually the first ones listed (legally-required ordering) and any risk that's specific to the company rather than boilerplate ('we may not be able to retain key personnel' is in every S-1; 'our top customer accounts for 38% of revenue and our contract expires in 2026' is signal).
The S-1 is the IPO investor's primary document. Read the first 10 risk factors, the MD&A cohort table, the use-of-proceeds, and the lockup terms. Vague language in any of those sections is a yellow flag; specific quantified language is reassuring. The hour you spend reading the S-1 prevents most retail IPO losses.
Sit with the ideas.
An S-1 prospectus discloses: founders hold 65% of voting power via dual-class shares; 180-day lockup expires in 6 months; use-of-proceeds is 'general corporate purposes'; net loss widened 30% year-over-year. Which is the biggest yellow flag for a long-term equity investor?