What makes a convertible toxic?

The conversion formula. A note converting at a fixed price is ordinary financing. One converting at a discount to the prevailing market price has no floor: the lower the price goes, the more shares the holder receives, so dilution and price decline reinforce each other.

Why would a company agree to this?

Because it has no alternative. These instruments are marketed to companies that cannot raise equity conventionally, and the terms are accepted under financial pressure. Desperation is the market, and it is not accidental.

Does the lender short the stock?

In many charged matters, yes. Selling short before conversion locks in the discount and pushes the reference price down, which increases the number of shares the conversion will produce. That combination is what turns a bad financing into a scheme.

Is the lender a dealer?

This has been the SEC's principal theory in recent years. A party whose business consists of buying convertible notes, converting and selling the resulting shares continuously is acting as a dealer and must register. Failing to do so is a standalone violation.

What is the reverse split cycle?

When dilution drives the price toward zero, the company reverse splits to restore a nominal price. Conversion then resumes against the higher price, and the cycle repeats. A history of repeated reverse splits is the clearest external marker.

Existing shareholders, entirely. Their proportional ownership collapses as shares are issued at ever-lower prices, and the value transferred goes to the note holder. The company usually receives a small fraction of the value ultimately extracted.

Is the structure itself unlawful?

Not inherently. Convertible instruments with variable conversion terms exist in legitimate financing. The enforcement theories attach to unregistered dealer activity, unregistered distribution of the converted shares, and fraud where the short selling is concealed.

How much value is extracted?

In charged matters, note holders have realised multiples of the principal advanced. The gap between what the company received and what the holder extracted is the measure of the harm.

Dilution death spirals

A death spiral is a convertible instrument that converts into stock at a discount to the prevailing market price, so each conversion dilutes holders and pushes the price lower, entitling the holder to still more shares.

Also called toxic convertibles, floorless convertibles, toxic lending. Observed in equities. One of the issuer and structural schemes techniques. No enforcement actions yet in the library.
Updated 2026-09-07

How does a death spiral work?

A death spiral is a financing structure whose mathematics guarantee the outcome.

An ordinary convertible note converts at a fixed price. Lend $500,000 convertible at $2.00 and the note becomes 250,000 shares, whatever the market does. The lender is exposed to the company’s performance, which is what makes it an investment.

A death spiral note converts at a discount to the prevailing market price — commonly the lowest trading price over a preceding period, less a percentage. Lend $500,000 convertible at a 40% discount to the lowest price of the past twenty days, and the number of shares is not fixed at all. It is inversely proportional to the price.

That single change removes the lender’s exposure and creates a feedback loop.

Convert a tranche. At a discount to market, so the shares are acquired below the going price.
Sell them. The discount is realised immediately. The selling itself pushes the price down.
The lower price sets the next conversion. More shares for the same principal.
Repeat. Each cycle produces more shares at lower prices, and existing shareholders are diluted further each time.

In many charged matters there is a fifth element: the lender sells short before converting. This locks in the discount and depresses the reference price the next conversion will use, which accelerates the loop.

The company, meanwhile, received a fraction of what is ultimately extracted. It agreed to this because it could not raise money any other way — and these instruments are marketed precisely to companies in that position.

Each conversion prices lower, so the next one takes more.

A worked example with real numbers

A company with 12 million shares outstanding at $2.40 issues a $500,000 note convertible at a 40% discount to the lowest trading price over the preceding twenty days.

Conversion	Reference price	Conversion price	Principal converted	Shares issued	Shares outstanding
1	$2.40	$1.44	$60,000	41,667	12,041,667
2	$1.82	$1.09	$60,000	55,046	12,096,713
3	$1.30	$0.78	$60,000	76,923	12,173,636
4	$0.90	$0.54	$60,000	111,111	12,284,747
5	$0.61	$0.37	$60,000	162,162	12,446,909
6	$0.41	$0.25	$60,000	240,000	12,686,909
7	$0.28	$0.17	$60,000	352,941	13,039,850
8	$0.19	$0.11	$60,000	545,455	13,585,305
9	$0.11	$0.07	$20,000	285,714	13,871,019

The lender advanced $500,000 and received 1,871,019 shares, sold progressively into the market as they were issued.

Approximate proceeds from selling each tranche at the reference price:
  41,667 × $2.40  =  $100,000
  55,046 × $1.82  =  $100,184
  76,923 × $1.30  =  $100,000
 111,111 × $0.90  =  $100,000
 162,162 × $0.61  =   $98,919
 240,000 × $0.41  =   $98,400
 352,941 × $0.28  =   $98,824
 545,455 × $0.11  =   $60,000
 285,714 × $0.07  =   $20,000
                     ─────────
Total                ≈ $776,000

Roughly $776,000 returned on $500,000 advanced, in under a year, with no exposure to whether the business succeeded. The 40% discount is realised on every tranche regardless of direction — that is what “floorless” means.

Existing shareholders held 12 million shares worth $28.8 million at the start and 12 million shares worth $1.3 million at the end. The company received $500,000.

Note the asymmetry that defines the structure: the lender’s return does not depend on the price going up, or staying flat, or anything else. It depends only on the discount, and the discount is contractual.

Why are death spirals prosecuted?

The instrument itself is not automatically unlawful, and this is an area where the enforcement theories have shifted over time. Three routes are used.

Unregistered dealer activity has been the SEC’s principal theory in recent years, and it is the most effective. Exchange Act § 15(a) requires registration to engage in the business of buying and selling securities for one’s own account as part of a regular business. A party whose activity consists of acquiring convertible notes across dozens of issuers, converting, and immediately selling the resulting shares is acting as a dealer — the pattern is the business. This charge requires no proof of fraud and no proof of harm; it is established from the trading records themselves.

Unregistered distribution under Securities Act § 5. The converted shares are issued in an unregistered transaction and sold into the public market. Whether an exemption covers them turns on Rule 144 conditions and on whether the holder is an underwriter — and someone acquiring with a view to immediate resale generally is. Strict liability.

Fraud under Rule 10b-5 where the short selling was concealed, where the arrangement was misrepresented to the issuer, or where the extent of dilution was hidden from shareholders.

Two further points are worth stating plainly.

The structure is sometimes a legitimate, if brutal, financing of last resort. Companies with no other access to capital do take this money knowingly, and some survive. Not every such note is a scheme.

But the marketing is targeted, the terms are standardised across dozens of issuers, and the same small group of lenders recurs. That pattern — an industry rather than a series of individual negotiations — is what regulators have responded to, and it is why the dealer registration theory has been the productive one.

Provisions most often charged
Provision	Citation	Primary text
Securities Act — registration requirement	15 U.S.C. § 77e	Read the text
Securities Exchange Act — broker-dealer registration	15 U.S.C. § 78o(a)	Read the text
SEC Rule 10b-5	17 C.F.R. § 240.10b-5	Read the text
Securities Act — fraud in the offer or sale	15 U.S.C. § 77q(a)	Read the text

How do death spirals get detected?

Share count trajectory. The most visible signal, and it is in every quarterly filing. A count rising by an order of magnitude over a few quarters, with no proportionate capital raised, describes conversion rather than financing.

Conversion term review. Financing agreements are filed. A conversion price defined as a discount to a trailing market price is identifiable on the face of the document.

Short interest correlation. Whether the note holder was selling short ahead of conversions. This is the element that converts a harsh financing into a fraud, and it is visible in lending and short-sale data.

Lender pattern analysis. The same parties appearing across many small issuers with near-identical note terms. This is what establishes dealer activity, and it turns individual matters into a single case.

Reverse split history. Repeated reverse splits are the external marker of the cycle, and they are disclosed.

Value reconciliation. Comparing what the issuer actually received against what the holder extracted.

Convertible notes whose conversion price is a discount to a trailing market price rather than a fixed figure.
Short selling by the note holder ahead of conversion, which locks in the discount and depresses the reference price.
Share counts rising by orders of magnitude over a few quarters with no capital raised proportionate to the dilution.
Repeated reverse splits followed by renewed dilution.
The same lenders appearing across dozens of small issuers with identical note terms.

What are the red flags?

A share count that has multiplied while the business is unchanged.
Reverse splits every few quarters.
Financing announcements describing convertible notes with a discount to market.
A lender who is not a registered broker-dealer but trades constantly in the issuer's stock.

For a shareholder, the check is simple and takes a minute: compare shares outstanding in the latest filing against the same figure a year earlier. If the count has multiplied and the business has not, the value is going somewhere, and the financing agreements filed alongside will say where.

What death spirals are not

They are not convertible notes. Fixed-price convertibles are ordinary financing.

They are not dilution. Issuing equity dilutes existing holders, which is a normal consequence of raising capital.

They are not short selling. Selling short is lawful; concealing that you are doing it while converting against the price you are depressing is a different matter.

They are not always fraud. Some issuers take this money with full knowledge and no alternative. The enforcement theories focus on the lender’s conduct and registration status rather than on the existence of the instrument.

Frequently asked questions about dilution death spirals

What makes a convertible toxic?: The conversion formula. A note converting at a fixed price is ordinary financing. One converting at a discount to the prevailing market price has no floor: the lower the price goes, the more shares the holder receives, so dilution and price decline reinforce each other.
Why would a company agree to this?: Because it has no alternative. These instruments are marketed to companies that cannot raise equity conventionally, and the terms are accepted under financial pressure. Desperation is the market, and it is not accidental.
Does the lender short the stock?: In many charged matters, yes. Selling short before conversion locks in the discount and pushes the reference price down, which increases the number of shares the conversion will produce. That combination is what turns a bad financing into a scheme.
Is the lender a dealer?: This has been the SEC's principal theory in recent years. A party whose business consists of buying convertible notes, converting and selling the resulting shares continuously is acting as a dealer and must register. Failing to do so is a standalone violation.
What is the reverse split cycle?: When dilution drives the price toward zero, the company reverse splits to restore a nominal price. Conversion then resumes against the higher price, and the cycle repeats. A history of repeated reverse splits is the clearest external marker.
Who bears the loss?: Existing shareholders, entirely. Their proportional ownership collapses as shares are issued at ever-lower prices, and the value transferred goes to the note holder. The company usually receives a small fraction of the value ultimately extracted.
Is the structure itself unlawful?: Not inherently. Convertible instruments with variable conversion terms exist in legitimate financing. The enforcement theories attach to unregistered dealer activity, unregistered distribution of the converted shares, and fraud where the short selling is concealed.
How much value is extracted?: In charged matters, note holders have realised multiples of the principal advanced. The gap between what the company received and what the holder extracted is the measure of the harm.

Unregistered distributions — An unregistered distribution is selling securities to the public without registration or a valid exemption, which Securities Act Section 5 prohibits regardless of whether anyone was deceived or harmed.
Undisclosed control blocks — An undisclosed control block is a controlling shareholding held through nominees and offshore entities so that no individual holding crosses a reporting threshold, leaving the market with a false picture of who controls the company.
Shell factories — A shell factory manufactures public companies with no real business, complete with nominee shareholders and a share quotation, for sale to promoters who need a listed vehicle to distribute stock through.
Short and distort — Short and distort is taking a short position and then publishing false or materially misleading negative claims about the issuer, in order to drive the price down and cover cheaply.

Terms defined on this page

Death Spiral Financing · Dilution · Convertible Note · Float · Restricted Securities

Sources

Securities Exchange Act § 15(a) — broker-dealer registration — Cornell Legal Information Institute
Securities Act § 5 — Cornell Legal Information Institute
SEC Rule 10b-5 — Electronic Code of Federal Regulations

Reviewed September 7, 2026. Every statute link points at the primary text. If something here is wrong, tell us — corrections are logged in public.