Insights
Author: Odyssey Trust Company in Partnership with Carta
Date: March 31, 2026
From Private to Public
A CFO’s Guide to Getting Your Data Ready 6 to 18 Months Before You File
Going public is one of the most data-intensive processes a finance team will manage. The companies that reach listing day with the least friction all share the same pattern: they started earlier than felt necessary, maintained a single source of truth for critical records, and chose partners who make handoffs seamless.
Whether this is your first public listing or you have navigated the process before, the mechanics demand the same discipline. Regulatory requirements evolve, exchange standards shift, and the window between a clean filing and a delayed one is almost always a data problem in disguise. This guide maps the preparation arc from 18 months out to listing day, covers what regulators and exchanges will expect, and identifies where the highest-risk handoffs tend to occur.
The Carta and Odyssey partnership exists to address one of the most consequential of those handoffs: the transition from private cap table management to public shareholder record-keeping. This guide draws on that experience.
IF THIS IS YOUR FIRST IPO
If this is your first time taking a company public, the scope of an IPO process may feel unfamiliar, so we’ve tried to distill a couple of principles that tend to matter most:
- Start earlier than you think you need to. Most delays on a first IPO come from underestimating how long foundational work takes, particularly audit history, SOX program development, and cap table reconciliation.
- The partners you choose before you begin will define the pace of everything after. Auditors, counsel, transfer agent, and equity platform should be in place before substantive preparation starts.
You will be managing multiple complex workstreams simultaneously. The quarter-by-quarter plan in this guide is designed to sequence those workstreams so they support rather than block each other.
“The companies that have the smoothest listings treat their cap table and shareholder records as a live, reconciled asset from the start of the process, not something to clean up before filing. That discipline is what separates a calm listing from a stressful one.”
– Jenna Kaye, CEO, Odyssey Trust Company
What Regulators will expect
Before mapping the preparation timeline, it helps to understand the three regulatory frameworks shaping your work.
The SEC and Your S-1
Your S-1 registration statement is the document investors and SEC staff will scrutinize most carefully. The Management’s Discussion and Analysis section carries the most weight. It needs to explain what drove changes in your results, what trends you expect ahead, and how you plan to fund the business, with numbers wherever you can provide them. Vague language generates comment letters. Specific, quantified explanations move through review faster.
Structured data is also part of modern filings. Most SEC submissions require key financial data to be tagged in Inline XBRL so the information can be read and compared programmatically. The scope of required tagging continues to expand. Your filing vendor handles the technical work, but selecting that vendor early and confirming your tagging scope before the filing sprint matters more than most teams anticipate.
IF THIS IS YOUR FIRST IPO
A common mistake in a first S-1 is describing financial results rather than explaining them. The SEC expects you to identify the specific factors that drove changes in revenue, costs, and cash flow, and to quantify those factors where possible. “Revenue increased due to growth across our product portfolio” is not an explanation. “Revenue increased 18% primarily due to a 23% increase in enterprise customer count, partially offset by a 4% decline in average contract value” is.
Auditors and Internal Controls
Financial statements in the S-1 must be audited by a PCAOB-registered firm under PCAOB standards. Under Sarbanes-Oxley Section 404, management is required to formally assess and report on internal controls over financial reporting. Whether your auditors also need to attest to that assessment depends on your filer classification: accelerated filers are subject to Section 404(b) attestation requirements; smaller
reporting companies and non-accelerated filers are not. Knowing which category you will fall into early shapes how much time and investment your SOX program requires.
Exchange Listing Standards
NYSE and Nasdaq each offer multiple quantitative listing pathways based on income, equity, market value, and float. Both exchanges have been active in revising standards, with Nasdaq having proposed changes to public float minimums and accelerated delisting procedures in 2025. The prudent approach is to build meaningful headroom above thresholds rather than target them precisely. Exchanges do not grant credit for close.
On terminology: “Single source of truth” appears throughout this guide and refers to maintaining one authoritative, reconciled record for each critical data set, particularly your cap table. When that principle breaks down, diligence stalls.
the preparation arc: 18 months to listing
The timeline below works backward from a target listing date. The sequencing matters as much as the content: certain workstreams must be in place before others can begin, and compressing the window rarely saves time when the downstream cost of gaps is accounted for.
18 to 15 Months Out: Build the Team, Set the Foundation
- Select and align your core partners. External counsel, PCAOB-level auditors, underwriters, a financial printer and EDGAR team, and a transfer agent should all be in place before substantive preparation begins. Your transfer agent will manage public shareholder records after listing. Selecting one that connects directly to your equity platform eliminates a significant data migration risk at a critical moment. The Carta and Odyssey integration is built around exactly this handoff.
- Choose your exchange and map the path. Confirm which quantitative listing standard fits your financial profile, model your metrics under multiple scenarios, and build buffers rather than minimums.
- Begin closing your books like a public company. Monthly and quarterly closes with documented explanations of what drove the numbers build the narrative discipline your MD&A will require.
- Lay the groundwork for your SOX program. Management’s formal assessment of internal controls needs to be in place before you file. Starting 15 to 18 months out makes that possible without crisis.
IF THIS IS YOUR FIRST IPO
The SOX program is the workstream most commonly started too late on a first IPO. Companies that begin 6 to 9 months out almost always encounter the same problem: there is not enough time to identify control gaps, implement improvements, and build the evidence trail for management’s assessment before filing. Starting at 18 months is not excessive. It is the timeline the process requires.
Download the Companion Checklist
The CFO’s IPO Data Checklist covers all eight data domains, organized by timeline, in a printable format. Use it to track readiness, brief your steering group, and walk into diligence prepared.
“The handoff from private cap table to public shareholder records is where a surprising amount of IPO risk hides. The reason we built the Carta and Odyssey integration is simple: move the data once, keep it reconciled end‑to‑end, and remove an entire layer of manual migration at the exact moment your team can least afford surprises.”
– Charly Kevers, CFO, Carta
14 to 10 Months Out: Lock Accounting, Upgrade Systems
- Resolve complex accounting positions before they become a filing problem. Revenue recognition, lease accounting, equity compensation, and segment reporting are the areas most likely to generate late-stage friction. Aligning with your auditors now means SEC staff focus their comments on presentation, not policy.
- Fix your data infrastructure. If your ERP, payroll system, or billing platform makes producing audit evidence painful, address it before deadline pressure arrives. Your Inline XBRL tagging requirements will also expand once you are a reporting company, so understanding your filing system’s capabilities early prevents surprises.
- Establish board committees and governance policies. Audit, Compensation, and Nominating and Governance committees each need charters. Written policies covering insider trading, related-party transactions, clawback, and disclosure must be in place before your exchange application is approved.
9 to 6 Months Out: Filing Mechanics and Market Readiness
- Work the S-1 systematically. Lock financials, MD&A, risk factors, and exhibits. Practice EDGAR submission workflows before you need them under live conditions. The SEC almost always issues comment letters, and clean, well-organized documentation makes responses faster.
- Submit your exchange application. Reserve your ticker, certify governance requirements, and validate your distribution and float metrics against current listing standards. Monitor any proposed standard changes in progress.
- Drill Day 1 operations before they are needed. Transfer agent onboarding, broker connectivity, shareholder support protocols, investor relations website, and disclosure procedures should all be tested before listing day, not on it.
IF THIS IS YOUR FIRST IPO
Many first-time issuers underestimate how operationally intensive the period immediately after listing is. Your transfer agent, brokers, and IR function need to be ready to handle shareholder inquiries, trade settlement, and any required corporate actions from the first day of trading. The rehearsal step matters more than it appears to when you are focused on getting the S-1 filed.
The Eight Data domains that define your readiness
The companion checklist organizes IPO preparation into eight categories. Each one carries risk if left unaddressed, and the categories most likely to create problems late in the process are the ones most commonly deprioritized early.
1. Governance and Corporate Records
SEC staff and exchange compliance teams will verify that governance documentation is current, organized, and consistent with your disclosures. Director independence confirmations, committee charters, and foundational policies feed directly into the S-1.
2. Equity and Cap Table
The cap table is the data domain where errors most often surface at the worst possible moment. It needs to be fully reconciled to the general ledger, with every grant, exercise, cancellation, SAFE, warrant, and secondary transaction reflected and supported by board approval documentation. The system of record matters: if the equity platform and the general ledger disagree, both are wrong until they agree.
3. Financials and Audit Support
Beyond audited financial statements, you need audit support documentation organized by process: tie-outs, roll-forwards, consolidations, and a prepared-by-client list your auditors can work from without friction. Critical accounting policy memos should be finalized and agreed with auditors before the S-1 drafting sprint begins.
4. MD&A and Narrative
The MD&A is where the most rewriting typically happens during SEC review. The standard is consistency between narrative and numbers: every significant variance should have a quantified explanation, known trends should be identified and discussed, and the liquidity section should address the next 12 to 24 months in concrete terms.
5. Controls and Certifications
Your SOX documentation is the evidence trail for management’s assessment of internal controls. Process narratives, risk and control matrices, IT general controls, and access reviews all feed into it. Building this incrementally over 12 to 18 months is manageable. Compressing it into 90 days rarely produces an assessment that holds up to scrutiny.
6. Legal, Contracts, and Compliance
Material contracts need to be compiled, reviewed for IPO-triggered clauses such as change-in-control or registration rights provisions, and summarized for disclosure purposes. IP, litigation, and regulatory exposure should be assessed against auditor materiality thresholds.
7. Tax and Treasury
Net operating losses, valuation allowances, transfer pricing arrangements, and cash repatriation constraints all affect how investors read your liquidity section. These belong in the MD&A narrative, not tucked into footnotes where they are easy to miss.
8. Filing and Listing Infrastructure
EDGAR workflows, Inline XBRL tagging, exchange application mechanics, and transfer agent setup are all operational requirements that need to be tested before they are needed. The first time you encounter a problem with any of them should not be while a live filing is in progress.
What "ready" actually looks like
Readiness for an IPO is not a single checklist completed in sequence. It is a set of conditions that need to be true simultaneously, across multiple workstreams, at the time you file.
- Data is reconciled across ERP, equity platform, transfer agent, and filing systems, with auditable evidence behind each figure.
- The narrative matches the numbers. MD&A, financial statements, and risk factors tell a consistent story, with the same drivers, the same trends, and the same conclusions.
- Internal controls are documented, tested, and operating as designed. Management’s assessment is supported, and the path to auditor attestation is mapped if it will be required.
- The listing file clears exchange thresholds with buffer, accounting for any standard changes currently in motion.
- Operational infrastructure has been tested. The transfer agent is onboarded, broker connectivity is confirmed, and the Day 1 playbook has been rehearsed.
When those conditions hold, listing day is what it should be: a milestone that was earned over 18 months of deliberate preparation, not a deadline that arrived too quickly.
Where Odyssey and Carta fit
Most IPO delays are not caused by market conditions. They come from fragmented data at the wrong moment: equity records that do not reconcile, manual rebuilds at the transfer agent, and narratives that drift from the numbers. The Carta and Odyssey partnership is designed to neutralize the riskiest handoff in the process by enabling a structured migration from private cap tables to public shareholder servicing, with broker connectivity and corporate actions workflows ready from the first day of trading.
As Carta’s exclusive transfer agent partner for public companies, Odyssey handles seamless data migration, corporate actions, broker connectivity, and shareholder support. If you are 6 to 18 months from filing, we can walk through your preparation against the companion checklist and coordinate with auditors, counsel, underwriters and your printer so the filing process moves smoothly.
Download the Companion Checklist
The CFO’s IPO Data Checklist covers all eight data domains, organized by timeline, in a printable format. Use it to track readiness, brief your steering group, and walk into diligence prepared.
Still have questions?
The preparation process raises a lot of questions, particularly for teams navigating it for the first time. We have compiled answers to the most common ones, covering everything from regulatory requirements, cap table risk, SOX timing, exchange standards and what to expect on and after listing day, in a companion FAQ document.
