Importance of Using Exact Share Numbers Instead of Percentages

Last Updated on March 26, 2026 by Ryan Roberts

Startup founders love talking about equity in percentages. It’s intuitive, fast, and sounds fair: “We’ll give you 2%.” The problem is that companies don’t legally issue percentages. They issue a specific number of shares or options, approved by the board and reflected on a cap table.

Vague percentage promises are one of the most common sources of avoidable equity disputes—especially with early hires, advisors, and co‑founders. And in the wrong moment, a casual “2%” can start to look like a non‑dilution right you never intended to give.

Here’s the bottom line I give founders as a startup lawyer:
If you want to avoid preventable equity drama, don’t promise percentages. Promise a specific grant, and define what it’s based on.

The biggest misconception is thinking that “2%” is a fixed promise. It isn’t. Percentages move because your cap table moves—and it moves more often than founders expect.

Why Percentages Break Down in Practice

A percentage only has meaning if everyone agrees on what it’s a percentage of and as of when. When founders say “2%,” they usually leave several critical questions unanswered:

  • Is it 2% of issued and outstanding shares, or fully diluted?
  • Is it measured today, when the promise was made, or when documents are signed?
  • What happens if the cap table changes in between?
  • Is this stock, options, or something else—and is there even a plan in place?

If those details aren’t explicit, you’re not setting a clear deal. You’re deferring a negotiation to a later—and usually worse—moment.

The Lag Problem: Where Most Equity Disputes Come From

The most common real‑world scenario looks like this:

You agree by email or verbally that a new hire will get “2%.” Everyone gets busy. The equity paperwork doesn’t get done for months. Meanwhile, the company issues equity to other hires, advisors, or creates an option pool.

When you finally document the grant, the hire asks:
“Does this actually equal 2% of the company?”

From the company’s perspective, the answer is often: “It was 2% as of when we talked.”
From the hire’s perspective, the expectation was: “I’m getting 2% of the company.”

Both positions feel reasonable. And that’s exactly the problem.

These disputes rarely turn on technical math. They turn on expectations, and expectations are shaped by how the promise was framed. A clean number of options tied to a defined baseline avoids this entirely.

When It Gets Risky: Percentages in Actual Documents

Things get more dangerous when percentages make their way into actual equity documents—offer letters, advisor agreements, or side letters—especially without careful qualifiers.

Even if the company intended “approximately 2% as of the grant date,” ambiguous language can later be read as:

“I own 2% of the company, period.”

That’s not how startup equity is supposed to work. But ambiguity becomes leverage when timing matters—like during a financing or acquisition.

At that point, it often doesn’t matter whether the claim is legally strong. If the clock is ticking, the company may pay to make the problem go away.

Theory vs. Reality: Why “Percentages Are Simpler” Is Misleading

Theory: Percentages are easier for non‑lawyers to understand.
Reality: Percentages are easier only until they’re disputed.

In practice, percentages tend to:

  • Inflate expectations
  • Obscure dilution mechanics
  • Create friction when the cap table changes (which it always does)

A specific grant size—properly documented—may feel less intuitive at first, but it’s far more durable over time.

Three Common Scenarios Where This Blows Up

1. Early Hires Before an Option Pool Exists

Founders promise “2%” before there’s an equity plan. Later, the company creates a 10–20% option pool (very common). The early hire sees dilution and feels the deal changed.

What mattered: The lack of a defined, fully diluted baseline.
What didn’t: That “2%” sounded reasonable at the time.

2. Financing + Pool Increase

A founder promises “1.5%” pre‑Series A. The lead investor requires a larger pre‑money option pool. By the time the grant is documented, honoring “1.5%” requires far more options than the founders expected.

What mattered: Pre‑ vs. post‑money framing and timing.
What didn’t: The original conversational shorthand.

3. Acquisition Timing Pressure

During an acquisition, someone points to old “2%” language and claims entitlement to 2% of proceeds. Even if the company disagrees, uncertainty at signing can be expensive.

What mattered: Ambiguity in old documents.
What didn’t: Whether the claim was “reasonable.”

Market Norms: How Experienced Startups Handle This

In most venture‑backed companies:

  • Equity grants are expressed as a number of shares or options, not a percentage.
  • If ownership is discussed at all, it’s framed as approximate and tied to a defined baseline.
  • Grants are approved and documented promptly, especially after financing events.

Percentages may be used to communicate magnitude—but they’re translated quickly into real, board‑approved grants.

If You Must Use a Percentage, Do It Safely

Sometimes ownership framing is helpful. If you go there, don’t leave it vague.

A safer way to frame the conversation is:

“We’re targeting an equity grant that would represent approximately X% of the company on a fully diluted basis as of [date], with the final grant being a specific number of options subject to board approval.”

That sentence does real work:

  • “Approximately” softens the guarantee
  • “Fully diluted” defines the denominator
  • A specific date and board approval limit future reinterpretation

It’s not about legal magic words—it’s about clarity.

What Should Actually Go in Offers and Grant Documents

If you want to avoid equity disputes, your process should consistently do four things:

  1. Use numbers, not percentages
    “20,000 options” beats “2%” every time.
  2. Define the baseline if ownership is referenced
    Specify fully diluted capitalization and the measurement date.
  3. Paper grants quickly
    The longer the delay, the more the cap table changes—and the more room there is for disagreement.
  4. Centralize equity communications
    Equity should not live in emails, Slack messages, or memory. It should live in approved documents and the cap table.

The Real Negotiation Lesson

Equity ambiguity isn’t just a legal issue—it’s a leverage issue. When documentation is unclear, the person holding the ambiguity often gains negotiating power at exactly the wrong moment.

This is why experienced founders and investors are obsessive about clean equity records. Not because paperwork is fun—but because ambiguity always shows up when timing is tight.

Practical Takeaways

What actually matters:

  • Issuing equity as a specific number of shares or options
  • Defining fully diluted ownership and timing if percentages are discussed
  • Prompt board approval and documentation

What usually doesn’t:

  • Whether “2%” sounds intuitive
  • Whether everyone “understood what was meant”
  • Whether a future dispute feels unreasonable

What to do differently next time: Before you say “you’ll get 2%,” translate it into a real grant tied to a defined cap table—and paper it before the cap table moves again.

author avatar
Ryan Roberts Partner
Ryan Roberts is a startup and venture capital attorney and partner at Roberts Zimmerman PLLC with more than two decades of experience advising high‑growth startups and venture capital investors. He is the author of Acceleration: What All Entrepreneurs Must Know About Startup Law and StartupLawyer.com