Baby shelf rule
The baby shelf rule (Form S-3 General Instruction I.B.6) caps companies with under $75 million of public float at selling one-third of that float in primary shelf offerings in any 12 months.
Last verifiedWhat it is
A shelf registration on Form S-3 lets a company register securities once and sell them later. Larger companies can use a shelf without a size limit on primary sales. Smaller ones can still use Form S-3 under General Instruction I.B.6, but with a cap: the total sold off the shelf in primary offerings over any 12-month period cannot exceed one-third of the company's public float.
The rule applies when public float (the market value of common equity held by non-affiliates) is below $75 million. The company also needs a class of common equity listed on a national securities exchange, must not be a shell company (or have been one in the past 12 months), and must disclose its calculation in the prospectus.
Worked example
Hypothetical: Company X has 30,000,000 shares held by non-affiliates and a recent price of $1.50, so its public float is $45,000,000. One-third of that is $15,000,000. If it sold $9,000,000 through an ATM program in the past 12 months, it can sell only about $6,000,000 more off the shelf until older sales roll out of the window or the float rises.
Why it matters
The cap explains a lot of small-cap behavior. A company that is near its limit may turn to deals the cap does not cover, such as private placements, equity lines registered on Form S-1, or registered direct offerings sized to the remaining room. A rising share price lifts the cap, because the float is recalculated using a recent price (within 60 days before the sale).
How to spot it
Prospectus supplements filed under the shelf (often a 424B5) usually state the public float calculation and the amount sold under I.B.6 in the prior 12 months. See S-1 vs S-3 and the baby shelf.
See it on DilutionScan
Companies DilutionScan covers, with the instruments read from their SEC filings. Open one to see each instrument and the filing it came from.
- GNSGenius Group Limited8 warrant series, 1 convertible, 1 ATM program, 3 shelf registrations and 2 completed offerings on file
- SMXSMX (Security Matters) Public Limited Company Ordinary Shares10 warrant series, 8 convertibles, 2 equity lines, 4 shelf registrations, 4 S-1 registrations and 2 completed offerings on file
- MLGOMicroAlgo, Inc. Ordinary Shares2 warrant series, 5 convertibles and 2 shelf registrations on file
- HOLOMicroCloud Hologram Inc. Ordinary Shares2 warrant series, 1 convertible, 3 shelf registrations and 2 completed offerings on file
Guides that use this term
- How to Trade Penny Stocks Without Getting DilutedA dilution-first guide to penny stocks. How new shares reach the tape, which SEC filings announce them, worked examples, and a 20-minute filing check.
- Why Penny Stocks Drop After Good News: The Offering PlaybookWhy a small-cap stock can fall on a strong press release. Registered direct and ATM mechanics, the offering math with a worked example, and the filings to read.
- How to Check a Penny Stock for Dilution in 20 MinutesA six-step filing checklist for dilution risk in a small-cap stock. What to open on EDGAR, which phrases to search for, and the four numbers to write down.
- Baby Shelf Rule Explained: S-3 I.B.6 vs Form S-1The baby shelf rule explained: how Form S-1 and S-3 differ, who can use a shelf, and how I.B.6 caps sales at one-third of public float per 12 months.
- What Is an ATM Offering? At-the-Market Sales ExplainedWhat an at-the-market (ATM) offering is, how the sales agreement and 424B5 work, how fast an ATM can sell shares, and where its sales show up in later filings.
- How to Read a 424B5 Prospectus SupplementHow to read a 424B5 prospectus supplement in five minutes: the cover, offering summary, dilution table, plan of distribution and baby shelf paragraph, in order.
Related terms
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Definition from the Signal8 Academy glossary. Educational content only. DilutionScan and Signal8 are not broker-dealers or investment advisers, and nothing here is a recommendation to buy or sell any security.