I archived the USPS Certified Mail receipt and IRS file-stamped acknowledgment letter.

Secured digital scans and physical copies of the USPS Certified Mail receipt with tracking number, delivery confirmation printout, and stamped IRS acknowledgment in offline personal storage.

I verified that the Stock Purchase Agreement matches the dates cited in the 83(b) election.

Confirmed that the board approval resolution date, vesting commencement date, and share acquisition date match the exact dates cited in the filed Form 83(b) election.

I confirmed whether my resident state requires an explicit state-level 83(b) filing.

Reviewed state tax agency rules to determine if a separate state election copy was required (or if the state automatically conforms to federal Section 83(b), such as California under Cal. Rev. & Tax. Code § 17024.5).

I confirmed that the equity administration ledger flags the 83(b) election as verified.

Checked that the corporate transfer agent or cap table platform (e.g., Carta, Shareworks, Pulley) has recorded the 83(b) filing status alongside the share certificates.

I verified that the original share purchase funds cleared before the purchase deadline.

Documented bank statements or payroll settlement receipts showing that the cash payment (par value or option strike price) cleared prior to the expiration of the stock purchase window.

I obtained documentation confirming the company met the $50M gross asset test at issuance.

Secured balance sheets or a formal QSBS representation letter from corporate counsel certifying that aggregate gross assets did not exceed $50,000,000 immediately before or after share issuance [verify: IRC § 1202(d)].

I verified the company is a domestic C-Corp operating a qualified trade or business.

Confirmed the entity is an eligible C-Corporation (not an S-Corp or LLC) and that at least 80% of assets are used in an active qualified trade, excluding professional services, finance, and real estate [verify: IRC § 1202(e)].

I mapped the exact continuous 5-year holding period completion milestone date.

Calculated the 5-year date from share purchase/grant date (if a timely 83(b) was filed) or from each progressive vesting tranche date (if unvested or no 83(b) was filed).

I audited corporate share redemptions to confirm no disqualifying transactions occurred.

Verified with corporate legal counsel that the company engaged in no significant redemptions of related-party shares within 1 year before or after issuance [verify: IRC § 1202(c)(3)].

I evaluated an IRC § 1045 standby rollover protocol for sales prior to 5 years.

If secondary liquidity occurs after 6 months but before 5 years, mapped the 60-day replacement window under IRC § 1045 to roll capital gains tax-free into new replacement QSBS stock [verify: IRC § 1045].

I audited state-level QSBS tax conformity in my state of residency.

Determined whether my resident state conforms to Section 1202. California, New Jersey, Pennsylvania, and New York do not conform, taxing QSBS gains under standard ordinary/capital gains state rates.

I modeled the liquidation preference payout order across all preferred stock series.

Reviewed the corporate Certificate of Incorporation to model the payout order across Series Seed, Series A, Series B, and Senior Preferred rounds under exit valuations from downside liquidation to target IPO.

I audited participating vs non-participating preferred terms across investor rounds.

Identified whether any investor classes hold participating preferred rights (double-dipping into remaining common assets after receiving preference payouts) or standard non-participating rights.

I logged the current independent 409A common valuation against the preferred price.

Recorded the spread between the latest independent 409A common valuation and the latest preferred financing share price to evaluate secondary discount expectations and tax exposure.

I documented the post-termination option exercise window (standard 90 days vs extended PTEW).

Verified the exact timeline required to exercise options upon resignation or layoff. If options carry a standard 90-day PTEW, evaluated cash and tax requirements to avoid forfeiture.

I confirmed whether investor anti-dilution protections are broad-based weighted average.

Confirmed the absence of punitive full-ratchet anti-dilution provisions that would severely dilute common equity in down-round financing events.

I mapped the company and investor Right of First Refusal (ROFR) notification timelines.

Mapped the contractual review window (typically 30 days for the company, plus an additional 15–30 days for major preferred investors) before any external secondary transfer can close.

I confirmed required Board of Directors approval gates and qualified transferee criteria.

Audited the corporate bylaws to verify required board consent resolution workflows, legal transfer fees, and transfer restrictions preventing competitors or non-accredited buyers from purchasing.

I evaluated participation in a company-sponsored tender vs a direct secondary sale.

Compared the efficiency of company-organized tender offers (standardized documents, pre-approved buyers, no ROFR delays) against private secondary broker transactions.

I audited all transaction fees, broker commissions, and company legal expense fees.

Documented gross-to-net deductions: secondary broker commissions (typically 2%–5%), buyer transfer fees, and company legal review fee reimbursements charged against seller proceeds.

I confirmed that transaction discussions comply with confidentiality and MNPI limits.

Ensured negotiations and data sharing with secondary buyers strictly comply with corporate non-disclosure agreements, avoiding unauthorized disclosure of confidential financial metrics.

I audited any proposed forward contracts or synthetic transfers for tax and legal risks.

Reviewed forward contracts or SPV equity pledges with an independent attorney, verifying constructive sale tax rules under IRC § 1259 and potential breaches of company transfer restrictions.

I mapped the underwriter 180-day lockup expiration date and early-release milestones.

Recorded the contractual lockup expiration date and documented any performance-based early release conditions (e.g., stock trading 25%–33% above IPO price for 20 of 30 consecutive trading days).

I calculated SEC Rule 144 volume limitations if classified as an affiliate or insider.

Modeled quarterly selling caps (the greater of 1% of total shares outstanding or the average weekly trading volume over the prior 4 weeks) and verified SEC Form 144 electronic filing protocols.

I drafted a pre-scheduled Rule 10b5-1 trading plan during an open trading window.

Formulated an algorithmic trading plan specifying objective price/volume execution triggers (e.g., sell X shares every 30 days above $Y price) while having zero possession of material non-public information.

I verified adherence to the SEC-mandated cooling-off period before first trade execution.

Enforced the required cooling-off window (the later of 90 days after plan adoption or 2 business days after Form 10-Q/10-K filing for officers/directors; 30 days for other insiders) [verify: SEC Rule 10b5-1].

I synchronized personal liquidity milestones with corporate quarterly blackout windows.

Mapped recurring quarterly financial blackout windows (typically engaging 2–3 weeks before quarter-end through 2 business days after earnings release) to prevent non-compliant discretionary trades.

I calculated the combined marginal capital gains tax rate across federal, NIIT, and state.

Modeled total tax liability: federal capital gains (20%) + Net Investment Income Tax (3.8%) + state income tax (0%–13.3%), determining exact net take-home cash from secondary or IPO sales.

I scheduled Form 1040-ES estimated tax safe harbor payments to prevent penalties.

Scheduled estimated tax payments for the quarter of sale to satisfy IRS safe harbor rules (110% of prior year tax liability for higher earners) to avoid underpayment penalties under IRC § 6654 [verify: IRC § 6654].

I deducted buyer escrow holdbacks and indemnity reserves from available cash projections.

Subtracted contractual escrow holdbacks (typically 10%–15% held in third-party escrow for 12–24 months) and legal indemnity reserves from immediate liquid cash projections.

I partitioned 24 to 36 months of baseline living expenses into isolated liquid reserves.

Separated 2 to 3 years of essential household living costs into high-yield savings and short-term US Treasury bills, protecting personal runway from market drawdown risk.

I established an explicit lifestyle inflation ceiling to prevent post-liquidity burn creep.

Decoupled liquid windfall capital from recurring monthly consumption, capping annual lifestyle budget expansions at a sustainable percentage of net cleared proceeds.

I scheduled the systematic reinvestment of remaining proceeds into broad index funds.

Formulated an automated reinvestment schedule into diversified low-cost index funds, systematically converting concentrated single-company equity into long-term compounding capital.