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Two founders agree to split a company equally. One supplies the initial cash and leads sales; the other builds the product. Both expect to work full time, but nothing addresses what happens if one leaves, takes another job or disagrees with the next financing. They have agreed on a percentage, not on how their partnership will work.
A founder arrangement should answer the questions that an ownership split leaves open. Those answers may belong in several documents: an operating agreement, stock purchase agreements, voting arrangements, intellectual-property assignments and service agreements. The right package depends on the entity and the founders’ plans.
Define what each founder is contributing
Separate cash, existing assets, intellectual property and future services. Is money a capital contribution or a loan? Who owns a domain, prototype or customer relationship developed before formation? Does the proposed equity compensate past work, future work or both?
Write down expected roles and time commitments. A founder who remains employed elsewhere presents different planning issues from one who starts immediately. Consider approval of outside activities, reimbursement of expenses and when compensation may begin. Avoid promising salaries or distributions that the company cannot support.
Plan for an early departure
Equity issued entirely upfront can leave an active founder building the company alongside a substantial passive owner. Vesting or company repurchase rights may address that risk, but their details matter. Specify the service requirement, schedule, treatment of prior work and consequences of resignation, termination, death or disability.
Consider whether any acceleration applies upon a sale or a later termination. Identify who can approve a repurchase, how notice is delivered and how the purchase price is determined. Employment status, management authority and equity ownership are separate issues: removing someone from a role does not necessarily cancel that person’s ownership.
Restricted equity also requires prompt tax advice. An applicable Section 83(b) election generally allows the service provider to recognize the transfer-date spread rather than wait for vesting. The IRS requires filing within 30 days of the property transfer, subject to its stated weekend and legal-holiday timing rule. Its Form 15620 instructions explain the election. It is not appropriate for every award, and making it does not guarantee a tax benefit. Do not wait until the annual tax return to raise the question.
Make the company’s ownership of its work clear
A company should be able to explain how it obtained the rights needed to operate. Identify existing code, designs, branding and other work contributed by each founder, then document the intended assignment or license. Review contractor agreements and third-party licenses too. Possession of a file or payment of an invoice does not answer every ownership question.
Check obligations to prior employers and collaborators before using earlier work. California Labor Code section 2870 limits the reach of employee invention-assignment provisions for certain inventions developed on an employee’s own time, with exceptions involving the employer’s business, research or work. Do not assume every personal project is excluded or that every broad assignment is enforceable. Related notice requirements and the individual’s status also need review.
Distinguish economics from control
A fifty-fifty economic split does not explain who can hire employees, borrow money, issue equity or approve a sale. Establish day-to-day authority, reserved decisions, voting thresholds and the composition of any board or management body. Consider budgets and signing limits so routine operations do not require repeated negotiation.
For a California LLC, the operating agreement can govern many management and member relations, but its flexibility has statutory limits. Corporations Code section 17701.10 restricts certain changes to duties and member rights. A form drafted for another state should not be assumed to work unchanged.
Build a usable disagreement process
Define what counts as a deadlock and who first attempts to resolve it. Escalation, mediation, a carefully limited independent decision-maker or a negotiated buyout mechanism may fit different businesses. A forced buy-sell provision can favor the founder with greater access to capital; apparent symmetry does not guarantee an even practical result.
Transfer restrictions should also address future investors and possible sales. Discuss rights of first refusal, participation rights and any obligation to support an approved sale. The goal is to understand the tradeoffs before a third-party offer makes them urgent.
Finish the documents and maintain the records
Match the agreed deal to actual approvals, signed agreements, payment records and the capitalization table. An unsigned spreadsheet should not be the only evidence of ownership. Keep copies of assignments and tax-election documentation with the company’s records, and identify who maintains them.
These conversations are easiest while the founders remain aligned. Addressing departures, control and ownership at the outset gives the business a workable set of rules when expectations later change.
Sources checked October 1, 2026. General information only; not legal or tax advice.
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