How much stock can a company actually sell now? The five gates of usable capacity
Shelf remainder, baby shelf, authorized shares, exchange approval and contract terms are five gates. The narrowest one sets usable capacity, and each has a date.
A large facility is not fully usable by default
Pinecone Coffee's current evidenced ledger reads issued 145, Treasury Stock 10, outstanding 135, and authorized but unissued 855. It has a $1,000 primary shelf, including a $600 ATM program ceiling. No ATM sales have been disclosed.
Headlines like these invite one question: "How much can they dilute?" The honest answer has two parts. First, which limits apply right now. Second, which one is smallest. Usable capacity is a minimum, never a sum.
The five gates
| Gate | What it limits | Where to find it |
|---|---|---|
| 1. Shelf remainder | Registered dollars not yet used | Shelf prospectus, later 424B5s, 10-Q |
| 2. Baby shelf (I.B.6) | Sales per 12 months under Form S-3 when float is under $75 million | 424B5 cover paragraph |
| 3. Authorized shares | Shares the charter allows, minus issued and reserved | 10-Q equity note, proxy, prospectus |
| 4. Exchange approval | Certain discounted non-public issuances of 20% or more | Agreement "exchange cap," proxy |
| 5. Contract terms | Blockers, floors, draw caps, no-issuance periods | 8-K exhibits, prospectus |
Not every gate applies to every company or channel. A registered direct offering off a baby shelf faces gates 1, 2, 3 and 5. A resale-registered equity line faces 3, 4 and 5, and the shelf may be irrelevant.
Gate 1: shelf remainder
Start from the registered amount and subtract every takedown and sale reported under it. If two programs share one shelf, their headline amounts cannot both be used in full.
Gate 2: the baby shelf
When General Instruction I.B.6 applies (Lesson 15):
Capacity = 1/3 × public float − I.B.6 sales in the prior 12 calendar months
Real example: Sonoma Pharmaceuticals' June 18, 2026 supplement computes public float of $12,649,011, subtracts $574,633 of prior sales, and states $3,641,703 available. Its shelf is larger; this gate is narrower.
Gate 3: authorized shares
A shelf cannot issue shares the charter does not authorize. Subtract issued shares and every reservation (options, warrants, convertibles, existing programs) from authorized shares, then convert to dollars only with a stated price assumption.
Real example: Polar Power's August 7, 2026 resale prospectus says about 38.4 million of its 50,000,000 authorized shares remain for its equity line, and that below an average price of about $0.65 it could not draw the full $25 million. Raising authorized shares requires a stockholder vote.
Gate 4: exchange approval
Nasdaq Rule 5635(d) and similar rules require stockholder approval for certain non-public issuances of 20% or more of outstanding shares below a defined minimum price; Lesson 12 walks through a real example. Agreements usually write this in as a share cap.
Real example: the same Polar Power prospectus caps issuance at 769,952 shares (19.99% of 3,851,684 outstanding) until stockholders approve, which it says permits only about $1.3 million, about 5.1% of the $25.0 million commitment. A stockholder meeting to vote on a Rule 5635(d) proposal was scheduled for October 14, 2026. Until a result is filed, the gate stays where it is.
Gate 5: contract terms
Contracts add their own limits:
- Ownership blockers (4.99% or 9.99%) slow how fast one holder can take delivery.
- Threshold or floor prices stop draws or conversions below a price.
- Per-draw caps on equity lines, often a percentage of daily volume.
- No-issuance periods after a deal. Co-Diagnostics' July 31, 2026 8-K states the company agreed not to issue common stock or equivalents or file other registration statements, subject to exceptions, until August 31, 2026.
Contract gates are often temporary. Record the end date.
Back to Pinecone: the smallest gate controls
As of August 31, Pinecone's gates read:
| Gate | Value | Note |
|---|---|---|
| Shelf remainder | $1,000 | Nothing sold yet |
| Baby shelf (simplified) | $300 | One-third of float minus prior sales |
| Authorized shares | $4,275 | 855 × $5, at an assumed $5 price |
| Exchange approval | Not triggered | Registered ATM sales at market are generally not the discounted non-public issuances this rule targets; verify for each structure |
| Contract | $200 | Current program condition |
Usable ceiling now ≈ min($1,000, $300, $4,275, $200) = $200
The ATM keeps its $600 headline, but the current scenario can use only $200. Lesson 9 uses that $200, not $600, to build share scenarios.
The authorized-share gate needs a price before it can be compared with dollar limits. At $5 it is $4,275; at $1 it would be $855, still not the narrowest here. Any price-based conversion must show the price.
Gates move
Each gate changes on its own schedule:
- Shelf: new takedowns, a new shelf, or expiry after three years.
- Baby shelf: the stock price within the 60-day window, the non-affiliate count, and sales rolling off after 12 months. A float above $75 million removes the cap.
- Authorized shares: a charter amendment approved by stockholders, or a reverse split that reduces outstanding shares while authorized stays the same.
- Exchange approval: a stockholder vote.
- Contract: expiry of no-issuance periods, amendments, waivers.
So a usable-capacity number is always "as of" a date. Re-check it whenever a 424B5, 8-K, proxy result or periodic report arrives.
A five-line template
When you summarize a ticker, write:
- Shelf: registered $X, used $Y, remaining $Z (source, date).
- I.B.6: applies or not; capacity $C (source, date).
- Authorized: headroom H shares; at price P that is $H×P (source, date).
- Exchange cap: S shares until approval; vote date if scheduled.
- Contract: blockers, floors, draw caps, no-issuance end dates.
Then: binding gate = the smallest, named.
Remember one line
Usable capacity is the smallest current gate, dated and named, not the sum of every large number.