What the forfeiture clause in a founder vesting agreement actually does when a co-founder leaves.

What the forfeiture clause actually does

A vesting agreement protects the company from a co-founder who leaves early, structured around the schedule and the cliff that decide how much is actually vested at any point. The clause that does the actual work sits near the end of the agreement: the paragraph that says what happens to the shares that have not yet vested. Read it literally before signing.

Three phrases that decide what this clause does

Three phrases inside that single sentence decide the actual outcome for a departing founder, the same three-part structure broken down in the founder vesting checklist.

"For any reason, whether voluntary or involuntary."

The clause does not distinguish a founder who resigns to pursue something else from a founder terminated without cause. Absent a carve-out, both walk away with the same forfeiture result. A founder pushed out early loses the same shares as a founder who simply chose to leave, with no acceleration provision to soften the difference.

"At the Corporation's sole election."

The choice between forfeiture, where the shares return to the treasury, and repurchase, where the company pays a price, sits with the corporation, not the departing founder. Without a defined timeline for that election, the departing founder can be left holding shares in limbo, unsure whether they are equity or cash.

"The lesser of the original issue price or fair market value as determined by the directors."

The remaining founder, sitting on the board, sets the price the departing founder receives. The clause hands the buyer the power to value the seller's shares, with no independent appraisal and no floor.

A negotiated version fixes what the standard clause leaves open. It names which departure scenarios trigger full forfeiture and which trigger acceleration, sets a firm election window for the corporation's forfeit-or-repurchase choice, and replaces board-determined fair market value with an independent appraisal or a formula tied to the last financing round. None of these changes protect the founder who leaves early from losing the unvested shares. They protect every founder, staying or leaving, from a clause that lets whoever remains in the boardroom set the terms of who gets paid what.

This clause sits inside the larger vesting structure: the schedule, the cliff, and the acceleration triggers that decide when forfeiture applies at all.

DRG Law reviews founder vesting agreements before incorporation and before a departure is on the table.