A term sheet is a short offer document that sets the price and conditions of a venture round before lawyers draft the full contracts. Most of its pages are boilerplate. Four clauses do the real work on founder ownership: the liquidation preference, the anti-dilution adjustment, board composition, and pro-rata rights.
Each one changes the math of an exit or a future round, and none of them shows up in the headline valuation. To read a term sheet in the plain sense — to obtain meaning from the words on the page — means running that arithmetic, not scanning for the number next to the word "valuation." The sections below work through one hypothetical company so the effect of each clause is visible in dollars.
What is a liquidation preference, and why does it come first?
A liquidation preference is the amount preferred shareholders receive before common shareholders get anything when the company is sold or wound down. It is usually written as a multiple of the price an investor paid. A 1x preference returns the investor's money; a 2x preference returns double.
Take a hypothetical company. Founders hold 8 million common shares. An investor puts in $10 million for 20% of the company, at a $50 million post-money valuation, with a 1x non-participating preference. The company later sells for $40 million. Readers following this should also see How a $126 Million Series C Dilutes the Founders Who Started It.
Without the preference, the investor's 20% would be worth $8 million. With it, the investor takes the first $10 million off the top. The founders and employees split the remaining $30 million. The preference turned a 20% stake into a claim on 25% of the sale price, and it did so without changing anyone's share count.
The second question is whether the preference participates. A participating preference pays the investor their money back first, then pays them their ownership share of what is left — a double dip. Non-participating preferences pay one or the other, whichever is larger. On the same $40 million sale, a participating 1x preference would pay the investor $10 million plus 20% of the remaining $30 million, or $16 million total. The difference between those two words is $6 million of founder money in this example.
How does anti-dilution change the share count?
Anti-dilution protection adjusts how many common shares a preferred investor's stake converts into if the next round prices lower than the last one — a down round. The mechanism is a conversion price, and the two standard formulas differ in how harshly they punish common holders.
A full-ratchet formula resets the investor's conversion price to the new, lower round price in full. A weighted-average formula splits the difference based on how many new shares the down round issues. The weighted-average version is the market-standard compromise; full ratchet is the aggressive end of the range.
Worked example: the same investor holds preferred shares convertible into 2 million common shares from the $50 million round. A down round prices at half the previous price. Under full ratchet, the conversion price halves, so the investor's stake now converts into 4 million common shares. Those extra 2 million shares come out of the pool everyone else shares. The founders' percentage drops without the founders selling anything.
Under a broad-based weighted-average formula, the adjustment is smaller — it accounts for the size of the new round relative to the whole company, so the investor receives fewer extra shares than a full ratchet would grant. The clause to negotiate here is the formula choice and the breadth of the base, because both decide how much of the down-round pain lands on common shareholders.
Why do board seats matter as much as percentages?
Ownership is a claim on outcomes. Board control is the power to choose the outcomes. A term sheet's board section — who sits on the board, who nominates whom, and what requires a board vote — often shapes founder economics more over several years than any single percentage.
The mechanics are structural. A board that can approve budgets, hire and fire executives, and authorize new share issuances can set the conditions under which future dilution happens. Protective provisions go further: they give preferred holders a veto over specific actions, such as selling the company, issuing a senior class of stock, or changing the option pool, regardless of what the common shareholders want.
The practical reading task is to count the board. A five-seat board with two investor seats, two founder seats and one independent is a different company from a five-seat board with three investor seats. Neither is automatically bad. But the composition, plus the list of protective provisions, tells a founder who decides the events — a sale, a new financing — where the liquidation preference and anti-dilution clauses activate.
What are pro-rata rights, and who keeps their stake?
A pro-rata right lets an existing investor buy enough shares in a future round to maintain their percentage ownership. It sounds neutral. Its effect depends on who holds it and how the option pool is expanded.
Suppose the 20% investor from the first round holds pro-rata rights. In a $20 million Series B, the investor can put in enough new money to stay at 20% of the larger company. That is their right, and it is capital the company might welcome. The squeeze shows up in allocation: every percentage point reserved for existing investors' pro-rata purchases is a percentage point unavailable for new lead investors, and the option pool expansion that usually accompanies a new round comes out of the common pool first.
Founders negotiating a term sheet typically care about three things here: whether pro-rata rights apply to all rounds or only the next one, whether they attach to the lead investor or to every investor of any size, and how the option pool increase is sized before the new money's percentage is calculated. A pool expanded before the new investment lowers the effective price the new investor pays — and that cost lands on existing common holders.
Practical steps: reading the four clauses in order
Our analysis of how these clauses interact suggests a fixed reading order, because each one changes the inputs to the next:
- Price and preference. Note the post-money valuation, the amount raised, and the liquidation preference multiple and participation terms. These set the exit waterfall.
- Conversion and anti-dilution. Identify the formula. Ask what happens to the share count in a flat round and in a down round.
- Board and protective provisions. Count the seats and read the veto list. This tells you who controls the events that trigger clauses one and two.
- Pro-rata and pool. Check who can follow on, and whether the option pool expands before or after the new price is set.
Run the waterfall on three sale prices — a disappointment, a midpoint, and a strong outcome. If the founders' recovery looks reasonable at the midpoint and the investor's looks reasonable at the disappointment, the sheet is broadly balanced for that round. If the investor's recovery is protected at every price while the founders' only works at the top, the preference stack, not the valuation, is the real negotiation.
What this means before you sign
The evidence of how these four clauses work is arithmetic, not opinion: preferences reorder the exit waterfall, anti-dilution formulas move shares between pools, board composition decides who approves the triggers, and pro-rata rights decide who defends their percentage. A term sheet's headline valuation is the least predictive number on the page.
What remains unknown in any specific negotiation is leverage — market conditions, competing offers, and how much runway a company has left all shift what a founder can push back on. The clauses above are the ones worth spending that leverage on. For the machinery behind the money on the other side of the table, see how the venture capital fund model actually works, from LPs to carry, and for the dilution math across later rounds, see how a $126 million Series C dilutes the founders who started it. How a round ends — and what the waterfall looks like in practice — is covered in how startup exits actually work, with numbers. More coverage of this kind sits in the publication's startups section. We covered a connected angle in How the Venture Capital Fund Model Actually Works, From LPs to Carry.
