VC & PE Glossary
What Is Founder Agreement?
Updated
Definition
A founder agreement is an early contract among co-founders setting equity splits, roles, vesting, IP assignment, and departure terms—before or alongside company incorporation.
Useful for: Founders, Investors
A founder agreement is a binding arrangement among company founders documenting equity ownership, roles, decision rights, vesting schedules, intellectual property assignment, and leaver provisions—establishing rules before significant outside investment.
How it works
Typical clauses: split of initial equity, four-year vesting with one-year cliff, reversal if a founder leaves early (leaver provisions), assignment of prior work product to the company, and dispute resolution. May live in a standalone founders’ agreement, restricted stock purchase agreements, or LLC operating agreement. Paired with PIIA for confidentiality and invention assignment.
Investors require all founders on standard vesting—even if they started years ago—often resetting unvested shares at financing. Unclear verbal splits without documentation trigger renegotiation under pressure. Founder ownership percentages in the agreement should match cap table entries post-incorporation.
Lawyers recommend signing before substantial IP or revenue accrues to avoid tax and ownership disputes.
Why it matters
- Founders: Align expectations while relationships are collaborative; revisit roles at milestones, not only at conflict.
- Investors: Clean founder docs reduce key person and cap table risk; missing IP assignment can block closing.
Common mistake
Equal equity splits without vesting because “we trust each other.” Trust does not remove the need for cliffs when one founder leaves in year two with 50% ownership.
Related ideas
See founder ownership, PIIA, leaver provisions, and vesting.
Related terms
- Founder Ownership — Founder ownership is the percentage of a company's equity—usually common stock on a fully diluted basis—held by founding team members after accounting for vesting, options, and investor rounds.
- Leaver Provisions — Leaver provisions define what happens to a founder or employee's equity when they leave the company — distinguishing good leavers from bad leavers and specifying vesting acceleration, repurchase, or forfeiture.
- PIIA — A PIIA (proprietary information and inventions assignment agreement) is a contract where employees assign company-related inventions and IP to the employer and agree to confidentiality obligations.
Common questions
Short answers for founders, LPs, and operators