Founder equity split with a vesting schedule

Illustrative worked example on a fictional three-cofounder startup (alice, bob, carol): STUD itself is sole-founder (Dan Schmitz) and pre-incorporation, so it has no cap table of its own, and a real buyer's cofounders, points, and dates slot in identically. Arithmetic recomputed against the tasks.py compute_equity_split reference oracle (_equity_reference), 2026-08-13: points 55:30:15 over the 90 percent left after a 10 percent option pool give 49.5 / 27.0 / 13.5, an exact 100.00 with the pool. Carol leaving at month 18 of a 48-month schedule with a 12-month cliff and monthly buckets has vested 18/48 of her 13.5 points: she retains 5.06 percent (round(1350 x 18 / 48) = 506 hundredths) and her unvested 8.44 percent redistributes pro rata by largest remainder, alice +5.46 to 54.96 and bob +2.98 to 29.98. The fixed buy-back price of $0.25 per share is 25 cents, and both cap tables total exactly 100.00. On the fair-market-value basis the buy-back price would be null: that valuation, like the split itself, stays a human decision; this play settles the cap-table and vesting arithmetic.