Lessons from MIT Founders' Circle

Structuring

Core Insight

The most consistent lesson across founders who've navigated co-founder splits, early hires, and investor negotiations: complexity in equity structures creates friction that compounds over time. The arrangements that feel 'fair and sophisticated' at formation become the source of resentment, renegotiation, and breakups later.

6 sections10 key principles

Equity Splits: What Actually Works

ApproachOutcome Pattern
50/50 or equal thirds (simultaneous start)Lowest conflict, highest trust preservation
KPI-based or milestone-contingent splits"Too awkward" — creates scorekeeping dynamic
Founder takes majority, others get small stakesWorks only if others join later with clear junior role

Why equal works: When co-founders start at the same time and commit the same opportunity cost, unequal splits signal distrust before the company has done anything.

When unequal is appropriate: A founder who has been working for 12+ months, has traction, and brings on a co-founder later. The key variable is time already invested, not perceived future contribution.

The Title Trick

Titles are free. Equity is permanent. If a contributor wants recognition but hasn't earned a co-founder equity stake, grant the "co-founder" title freely. It costs nothing, satisfies psychological needs, and preserves equity for when it matters.

Vesting: The Most Misunderstood Protection

Vesting ensures equity reflects actual contribution over time, not just promises made at formation.

RoleStandard TermsRecommended TermsWhy
Employees1-year cliff, 4-year vest(Standard is fine)Different risk profile
Founders1-year cliff, 4-year vest2-year cliff, 5–6 year vestPrevents early departure with outsized equity
Early employees (first 6 months)Employee termsFounder-level termsThey're taking founder-level risk

Why Longer Founder Cliffs Matter

Standard 1-year cliff: Co-founder leaves at 14 months, walks away with ~25% of the company. With a 2-year cliff: same departure results in zero equity retained. The longer vest also protects against a co-founder who stays just long enough to fully vest, then leaves with 50% of a company they stopped being passionate about years earlier.

Early Employees Are Not Regular Employees

The first people who join your startup in the first 6 months are taking founder-adjacent risk: no brand recognition, high failure probability, below-market compensation. Treat them accordingly.

The Four Essential Founder Documents

Every founding team needs these four documents before writing a line of code or accepting a dollar. Battle-tested templates exist — don't draft from scratch.

DocumentWhat It DoesWhy It Matters
Founders AgreementDefines equity split, vesting terms, roles, decision rights, departure termsThe constitution of your partnership
Restricted Stock Purchase AgreementFormalizes each founder's equity ownershipMakes equity legally real, not just verbal
PIIAAssigns all IP created to the companyWithout this, a departing founder could claim ownership of code/designs
Indemnification AgreementProtects founders personally from company liabilitiesDirectors need this before making decisions on behalf of the entity

Additional Documents (When Needed)

DocumentWhen to Use
YC SAFEAccepting pre-priced-round investment
FAST AgreementGranting advisory equity
Employee Option GrantFirst non-founder hire receiving equity

Top-tier startup law firms offer free startup formation kits with deferred billing until your first funding round.

SAFE Agreements: Useful but Dangerous

A Simple Agreement for Future Equity: the investor gives you money now; they get equity later when a priced round sets an actual valuation.

When SAFEs Work

  • Bridge financing immediately before a priced round you're confident is coming
  • Very early stage when setting a valuation is genuinely impossible

When SAFEs Create Problems

ScenarioProblem Created
Stacking multiple SAFEs at different times/capsConversion math becomes complex; later investors confused
Raising on SAFE then deciding to bootstrapSAFE sits in limbo indefinitely
Extended duration without conversionDefeats the "simple" purpose; creates anxious investors with unclear rights

The rule: A SAFE should convert within 12–18 months. If you're not confident a priced round is coming in that window, question whether a SAFE is the right instrument.

Cap Table Hygiene

Your cap table is every person or entity that owns equity. It starts simple and gets complex fast.

A clean cap table accelerates fundraising. Investors review your cap table before writing checks. Messy structures — unclear vesting status, unresolved SAFEs, undocumented grants — can kill deals entirely.

Best Practices

  1. Use professional cap table software (Carta or equivalent) from day one. Not a spreadsheet.
  2. Every equity grant = a cap table entry. Each vested employee requires tracking and documentation during future raises.
  3. Document everything at the time it happens. Reconstructing verbal equity promises 2 years later, during a funding round, is a nightmare.

International Complications

Some countries require employees to purchase options at fair market value upon departure — this can mean $20K–$100K+ out of pocket. Tax treatment of equity differs dramatically by jurisdiction. If you have non-US founders or employees, get jurisdiction-specific advice early.

Choosing Your Law Firm

Top-tier firms offer more than legal work:

ServiceValue
Deferred billing until fundingEliminates legal costs during pre-revenue period
Investor introductionsFirms with VC relationships open doors
Ecosystem connectionsIntroductions to other founders, potential customers
Template librariesBattle-tested documents
Pattern recognitionThey've seen 1,000 startups

The Wrong Investors Are Worse Than No Investors

Due diligence goes both ways. Verify reputation. Check founder references — not the ones they suggest, but ones you find independently. Understand their timeline. Assess their behavior under stress.

"If this company is worth $100M in 5 years, will this investor be celebrating with me or suing me?"

Key Principles

10 principles from Structuring

1

Simplicity preserves relationships.

Equal splits with proper vesting beat complex performance-based arrangements every time.

2

Vesting protects everyone.

Longer cliffs for founders aren't punitive — they ensure equity reflects actual contribution.

3

Don't raise money to feel validated.

Raise only when capital genuinely accelerates something already working.

4

Cap table hygiene is non-negotiable.

Use professional tools from day one. Document everything when it happens, not retroactively.

5

Your law firm is a strategic partner, not a vendor.

Choose firms that provide ecosystem access, not just documents.

6

Due diligence your investors as hard as they diligence you.

The wrong $50K check can cost you your company.

7

Early employees are proto-founders.

Treat their equity accordingly — you're asking them to take founder-level risk.

8

Titles are free, equity is forever.

Use the cheap currency liberally, the expensive currency sparingly.

9

SAFEs are bridges, not destinations.

If conversion isn't coming within 18 months, something is wrong.

10

Get the four documents signed before anything else.

Founders Agreement, Restricted Stock Purchase, PIIA, Indemnification. No exceptions.