Capital Structure
Neutral
Important
R, A, X
Post-Completion
Completed
The Shareholders' Agreement: Governing What Happens After Completion
Understand what a Shareholders' Agreement governs after a UK transaction, why rollover sellers need to read it as carefully as the SPA, and what reserved matters mean in practice.
The 30-Second Definition
A Shareholders' Agreement (SHA) is the contract between a company's shareholders that governs their relationship after a transaction — covering decision-making rights, share transfer restrictions, and exit mechanics. It becomes essential wherever ownership is split between multiple parties, whether that's a founder and an investor after a funding round, or a buyer and a rolled-over seller after an acquisition.
When It's Needed
Whenever more than one party holds shares and wants rights beyond what the articles of association provide on their own. Most commonly that's after an investment round, a partial exit involving seller rollover equity, or a management buy-in or buy-out.
What It Typically Covers
Reserved matters — decisions requiring investor or minority shareholder consent, such as taking on new debt, senior hires, or capital expenditure above an agreed threshold.
Board composition and appointment rights.
Drag-along and tag-along provisions, which force or allow minority shareholders to sell alongside a majority sale.
Pre-emption rights on any new share issues.
And Good Leaver / Bad Leaver provisions for shareholders who are also employees and later depart.
Why It Matters for Rollover Sellers Specifically
A founder who rolls part of their proceeds into equity in the new ownership structure is no longer the controlling shareholder.
From that point, it's the Shareholders' Agreement — not the SPA — that governs what happens at the next exit, including whether the founder's remaining stake gets dragged along on terms they don't ultimately control.
Where the Mechanics Actually Live
Concepts like Waterfall Distribution and Liquidation Preference, covered elsewhere in this dictionary, describe how proceeds get divided on a future sale.
The Shareholders' Agreement is where those mechanics are actually documented and made legally enforceable — the waterfall only works the way it's described because the SHA specifies it in writing.
GRAX Connection
This is one of the few documents that runs across three GRAX legs at once: drafted at Raise to govern the founder-investor relationship, renegotiated at Acquire when ownership changes hands, and directly shaping outcomes at the next Exit for anyone still holding rolled-over equity.
This entry is for general information only and does not constitute legal, financial, or tax advice. Founders should take specific professional advice before acting on any of the points covered here.
