Form S-3
Also called: S-3, Form S-3, short-form registration, S-3 shelf
The short-form SEC registration statement that eligible reporting companies use for shelf offerings, letting them incorporate their existing filings by reference and sell securities quickly.
Last verified
What it is
Form S-3 is a registration statement for companies that already report to the SEC. It is short because, instead of repeating the business description and financial statements, it incorporates the company's 10-K, 10-Qs and 8-Ks by reference. That makes it the usual vehicle for a shelf registration.
Who can use it
The general eligibility requirements include being a reporting company for at least 12 months and having filed all required reports on time during that period. Then the transaction requirements decide how much a company can sell:
- I.B.1: companies with at least $75 million of public float can make primary offerings without a size limit.
- I.B.6: companies below $75 million can still make primary offerings, but are capped at one-third of public float in any 12 months (the baby shelf rule), and must have a class of common equity listed on a national exchange.
- I.B.3: secondary (resale) offerings by selling shareholders, for securities of a listed class.
Why it matters
Losing S-3 eligibility, for example by filing a 10-K or 10-Q late, pushes a company to the longer Form S-1 for new registrations, which is slower and more expensive to keep current. An effective S-3 shelf, by contrast, lets a company price an offering overnight.
Worked example
Hypothetical: Company X files its 10-Q five days late in May. For the following 12 months it fails the timely-filing requirement, so a new shelf would have to be on Form S-1 instead of S-3.
How to spot it
On EDGAR, look for form type S-3, its amendments (S-3/A) and the SEC's effectiveness notice (EFFECT). The registration fee table shows the maximum aggregate amount. See S-1 vs S-3 and the baby shelf.
Related terms
Guides that use this term
Dilution 101 · 6 min read
S-1 vs S-3 vs the Baby Shelf Rule, With the One-Third Math Worked Out
How Form S-1 and Form S-3 differ, who can use a shelf, and how the baby shelf rule caps small companies at one-third of public float per year.
Dilution 101 · 6 min read
At-the-Market (ATM) Offerings: How Companies Sell Shares a Little at a Time
How an ATM program works, what a sales agreement and prospectus supplement say, how fast an ATM can be used, and where its sales show up later.
Dilution 101 · 6 min read
How to Read a 424B5 Prospectus Supplement in Five Minutes
A section-by-section route through a 424B5, the filing that announces a shelf takedown, with the dilution table math worked out and a checklist.
Listing & compliance · 6 min read
NT 10-K and NT 10-Q: How Late Filing Notices Work
What an NT 10-K or NT 10-Q is, the Rule 12b-25 extension of 15 or 5 days, what the notice must disclose, and what happens if the report is still late.
Offerings & deals · 5 min read
Form S-1 Explained: IPO vs Resale Registrations, S-1/A and Effectiveness
How a Form S-1 moves from first filing to effectiveness, the difference between an IPO S-1 and a resale S-1, and what 424B4 and 424B3 mean.