Section 83(b) Election: 30-Day IRS Rule for Restricted Stock (Treas. Reg. §1.83-2)
Section 83(b) election for restricted stock and early-exercised options: must file within 30 days of transfer, official IRS Form 15620, Treasury Regulation §1.83-2, what Pub. 525 covers, and why 83(b) does not apply to typical RSUs.