Contract clause
Anti dilution clause: protecting an investor's price in a down round
An anti dilution clause protects an investor if the company later issues shares at a lower price than the investor paid. It adjusts the investor's effective price, usually by issuing extra shares or changing a conversion ratio, using either a weighted average formula that shares the impact or a full ratchet that resets the price entirely.
A down round already hurts founders, and the anti dilution formula decides how much more of the company moves from them to earlier investors. The gap between the two formulas can run to hundreds of thousands of shares, so this is a clause where the arithmetic matters more than the wording.
Nuwan Madhusanka · Co-founder
4 min read · Published
Sample clause
a shareholders agreement for Kookaburra Energy Storage Pty Ltd, a fictional Newcastle battery company whose seed investor, Ridgeline Seed Fund, holds 1,000,000 seed preference shares bought at $2.00 each
9. Anti Dilution 9.1 If the Company issues Shares at a price per Share below the Seed Price (a Down Round Issue), other than an Excluded Issue, the Company must issue to each Seed Investor, for no additional payment, the number of additional Ordinary Shares that would have been issued to it had its subscription been made at the Adjusted Price. 9.2 The Adjusted Price is the Seed Price multiplied by (A + B) and divided by (A + C), where A is the number of Shares on issue immediately before the Down Round Issue on a fully diluted basis, B is the number of Shares the Down Round Issue consideration would buy at the Seed Price, and C is the number of Shares actually issued in the Down Round Issue. 9.3 Excluded Issues are issues under the Employee Share Plan, issues on conversion of Seed Preference Shares, and any issue the Seed Investor Majority approves in writing. 9.4 Each Shareholder must vote for any resolution, and waive any pre emptive right, needed to give effect to this clause.
Sample wording, not legal advice.
Variants
Narrow based weighted average
Investors seeking a larger adjustment than the broad based formula gives, by counting fewer existing shares in the calculation.
The Adjusted Price is calculated using the formula in clause 9.2, except that A is the number of Ordinary Shares and Preference Shares actually on issue immediately before the Down Round Issue, excluding options, performance rights, convertible notes and any unissued Shares reserved for the Employee Share Plan. All other provisions of clause 9 continue to apply without change.
Full ratchet
Rare in Australian early stage deals, but seen in distressed or bridge financings where an investor has strong leverage.
If the Company makes a Down Round Issue, the Seed Price is reduced to the price per Share of that Down Round Issue, and the Company must issue to each Seed Investor, for no additional payment, the number of additional Ordinary Shares needed so that the total number of Shares held by that Seed Investor equals its Subscription Amount divided by the reduced price.
Weighted average with pay to play
Down round investors who want the protection to benefit only earlier investors who support the company in the new round.
A Seed Investor is entitled to an adjustment under clause 9.1 only if it subscribes in the Down Round Issue for at least its pro rata share of the Shares offered. A Seed Investor that does not do so loses its rights under this clause for that Down Round Issue and all later issues, and its Seed Preference Shares convert into Ordinary Shares on a one for one basis.
What to negotiate
Broad based or narrow based
The broad based formula counts all shares on a fully diluted basis, including options and the employee pool, which spreads the adjustment and keeps it small. The narrow based formula counts fewer shares, so the investor receives more. Founders almost always push for broad based, and it has become the usual expectation in Australian, UK and US venture deals.
Excluded issues
Anti dilution should not fire on ordinary events. Founders want exclusions for employee share plan grants, conversions of existing securities, shares issued in an acquisition, and issues the investors approve. Investors accept those but watch for a broad exclusion covering any board approved issue, which would allow a down round without any adjustment at all.
Who carries the cost
The extra shares issued to the protected investor dilute everyone else, including the new down round investor, who may insist the adjustment is waived as a condition of investing. That negotiation usually happens inside the down round itself, which is why earlier investors seek wording requiring their own class majority to agree to any waiver.
Mechanics in an Australian company
Australian companies usually give effect to an adjustment by issuing bonus shares or by changing the conversion ratio of preference shares into ordinary shares. Either route needs authority in the constitution and the share terms, and cooperation from other shareholders, such as a waiver of pre emptive rights, which the clause should require in advance.
The risk of leaving it out
Without anti dilution protection, an investor that paid a high price carries the full loss of value when the company later raises at a lower price, while new investors buy in cheaply. Earlier investors then become reluctant to support a down round the company may need to survive, and argue for protection at the worst possible moment.
The two formulas worked through
Take a seed investor that paid $2.00 for 1,000,000 shares, $2,000,000 in total. The company later raises $1,500,000 at $1.25 a share, issuing 1,200,000 new shares, when 6,000,000 shares were on issue on a fully diluted basis. Under the broad based formula B is the 750,000 shares the new money would have bought at $2.00, so the adjusted price is $2.00 multiplied by 6,750,000 and divided by 7,200,000, which is $1.875. The investor's $2,000,000 now equals about 1,066,667 shares, so it receives about 66,667 extra shares. Counting only 5,000,000 issued shares, a narrow based approach, the price falls to about $1.855 and the extra shares rise to about 78,261. Under a full ratchet the price becomes $1.25 and the investor receives 600,000 extra shares.
The legal framework and market documents
In Australia the adjustment has to work within the Corporations Act and the company's constitution, because the rights attached to preference shares must be set out in the constitution or approved by special resolution. Market model documents, such as the UK Private Capital model documents for Series A rounds and the National Venture Capital Association's model legal documents in the United States, are common reference points when the formula is negotiated, although neither is compulsory and each is adapted deal by deal.
Where it sits in a generated document
A generated shareholders agreement carries anti dilution as a numbered clause, with the formula written out in words and its terms defined in sub clauses, next to the pre emptive rights clause it depends on. Prices and share counts are written in as content, so any worked figures in a draft should be recalculated before signing. The document does not cite the Corporations Act.
Documents that carry this clause
Questions people ask
What is broad based weighted average anti dilution?
It is a formula that lowers an investor's effective price after a down round by an amount weighted to the size of the new issue, counting all shares on a fully diluted basis. A small down round produces a small adjustment and a large one a bigger adjustment. It is the most common form in venture financings because it shares the impact fairly.
What is a full ratchet?
A full ratchet resets the protected investor's price to the price of the later cheaper issue, however few shares were sold at that price. It gives the investor the maximum protection and can hand it a large number of extra shares at the founders' expense. For that reason it is rare outside distressed financings where the investor has strong leverage.
Does anti dilution protect against all dilution?
No. Anti dilution protects the price an investor paid, not its percentage. Issuing new shares at the same or a higher price dilutes every holder's percentage but does not trigger an adjustment. Protection of percentage comes from pre emptive rights, which let holders buy into new issues, and using them requires investing more money.
Who pays for an anti dilution adjustment?
Every shareholder who does not receive extra shares, mainly founders, employees and sometimes the new investor. Because new investors dislike being diluted by an adjustment on the day they invest, they often require earlier investors to waive it, which is why the clause usually states what majority of the protected class can grant a waiver.
Do employee option grants trigger anti dilution?
Not in a well drafted clause. Grants under an approved employee share plan are usually excluded issues, along with conversions of existing securities and issues the protected investors approve. Without those exclusions routine events could trigger adjustments, and every option grant priced below the investor's price would reprice the investor's shares.
How is anti dilution given effect in an Australian company?
Usually by issuing additional shares to the protected investor for no further payment, or by adjusting the conversion ratio of its preference shares into ordinary shares. The constitution must allow the chosen method, and other shareholders may need to waive pre emptive rights or vote for resolutions, so the clause should oblige them to cooperate.
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