Weights & Biases pre-IPO equity planning in California

Where Weights & Biases sits today

Weights & Biases is a late-stage AI company headquartered in CA. An active secondary market gives employees a path to partial liquidity before IPO through platforms like Forge, Hiive, EquityZen, or company-run tender offers.

What California residency changes

California taxes RSU ordinary income, NSO exercise spread, and ESPP discount income at up to 13.3%. For a Weights & Biases employee sitting on a large vested-but-not-settled equity position, the liquidity-event year stacks state tax on top of the federal 37% bracket, producing a combined marginal of approximately 50.3%.

State AMT on any ISO exercise

California runs its own state AMT on top of federal. If Weights & Biases grants ISOs and you plan to exercise before the liquidity event, you'll face both federal and state AMT. A $1M bargain element in California generates federal AMT plus approximately 6-7% additional at the state level, which adds meaningfully to the exercise cash requirement.

QSBS and California

California does NOT conform to federal QSBS. Even if your Weights & Biases stock qualifies for the Section 1202 exclusion federally, California taxes the full gain at up to 13.3%. That's the single largest planning gotcha for Bay Area founders and early employees on exit.

Moves to make before the liquidity event

Adopt a 10b5-1 plan during the last open window before Weights & Biases's S-1 (90-day cooling-off for non-officers, 120 days for officers/directors). Model federal and state AMT before any ISO exercise. Maximize after-tax 401(k) contributions in the months before IPO, while your ordinary income is still at the pre-IPO baseline. If you're considering a move out of California, time it well before vesting events to minimize trailing-nexus exposure.