Your choice of IPO counsel is the most consequential advisor decision you will make. A great securities lawyer keeps your S-1 on schedule, anticipates SEC comments before they arrive, and protects you from disclosure missteps that can derail the deal. A weak one does the opposite — and you won't know the difference until it's too late to switch.
What IPO Counsel Actually Does
Company IPO counsel leads the legal workstream from early preparation through listing. Their work falls into four phases:
- Pre-filing preparation (12–6 months): Corporate clean-up — Delaware reincorporation, cap table remediation, material contract review, governance restructuring, equity plan adoption.
- S-1 drafting (6–3 months): Drafting and negotiating every section of the registration statement — business description, risk factors, MD&A, governance disclosures, executive compensation.
- SEC review (3 months – effectiveness): Managing comment letter responses, coordinating with the SEC staff, filing amendments, and obtaining effectiveness.
- Roadshow and pricing (final 2 weeks): Managing the legal aspects of the roadshow, comfort letters, legal opinions, and closing documents.
The Firm Tiers
Latham & Watkins · Cooley · Wilson Sonsini · Goodwin · Fenwick
The five most active IPO law firms by deal count. Deep capital markets practices, experienced SEC relationship management, and track records across hundreds of IPOs annually. Best for companies above $1B anticipated market cap or with complex structures.
Kirkland · Davis Polk · Skadden · Simpson Thacher · Ropes & Gray
Full-service firms with strong capital markets groups. Often strong in specific sectors (Kirkland in PE-backed IPOs, Davis Polk in large-cap financial services).
Gunderson · Orrick · Morrison Foerster · Perkins Coie
Excellent for venture-backed technology companies and smaller EGC listings. Competitive rates, strong start-up community relationships, and deep familiarity with EGC accommodations.
The Partner Matters More Than the Firm
Within any tier, the specific partner assigned to your deal matters more than the firm's league table ranking. Ask explicitly about partner continuity — who will be your day-to-day contact, will the partner you met in the bake-off actually be on your deal, and what happens if they leave the firm mid-process. Partner departures during an active S-1 process are not rare and are highly disruptive.
Running the Bake-Off
Most companies interview 3–5 firms. A well-run bake-off typically takes 4–6 weeks and follows this structure:
Issue a Standardized RFP
Send the same information package to all firms — company overview, anticipated timeline, deal complexity, and any specific issues (dual-class structure, complex revenue recognition, prior SEC correspondence). Ask each firm for their proposed team, recent comparable transactions, and fee estimate.
In-Person Presentations
Two-hour meetings with the proposed team. Require the actual partner and associates who will work on your deal — not the firm's senior rainmakers who will hand off after winning the mandate. Evaluate chemistry with your CFO and GC as much as technical capability.
Reference Checks
Call the CFOs of 2–3 recent clients. Ask: Did they deliver on timeline? How did they handle unexpected SEC comments? Were they available when needed? Would you use them again?
Fee Negotiation
Most IPO counsel charge hourly rates with a blended estimate at engagement. Total fees typically run $1.5–4M depending on complexity and timeline. Ask for a monthly cap structure or fixed-fee elements for defined deliverables. Firms will negotiate.
Questions to Ask in the Bake-Off
- Who specifically will be the lead partner on our deal from engagement through closing — and will that same person be our day-to-day contact?
- How many S-1s did your team file in the past 12 months? What were the outcomes?
- Walk us through how you handle an unexpected SEC comment letter round — who manages the response, what's the typical timeline?
- Have you worked with companies at our stage and complexity? What were the most challenging disclosure issues you resolved?
- What is your approach to gun-jumping compliance during the pre-filing period?
- How do you manage the legal workstream in parallel with the audit and underwriter workstreams?
- What is your estimated total fee for a transaction of our complexity, and how do you structure billing?
- What is your firm's policy on partner continuity in the event of partner departure or leave mid-engagement?
IPO Counsel Resources
Guides to the legal aspects of the IPO process
US IPO Guide
Written by one of the most active IPO law firms — the definitive free guide to the IPO legal process from S-1 drafting through SEC review to closing.
IPO Roadmap — Legal & Disclosure Sections
Deloitte's IPO roadmap covers the financial reporting and legal disclosure requirements that IPO counsel must navigate.
How to Select IPO Counsel
The selection criteria for IPO counsel are different from general outside counsel. The key attributes:
- Volume of recent IPOs in your sector: A securities practice that has handled 15 SaaS IPOs in the last 3 years knows what SEC staff focus on for SaaS disclosure, which risk factors draw comments, and what the current market practice is for your type of company. This experience cannot be manufactured by a generalist securities team. Ask specifically for a list of comparable IPOs completed in the last 24 months.
- Who specifically will work your deal: Bait-and-switch is common in law firms — partners are sold, associates do the work. The critical question is: who will be the day-to-day partner on your transaction, how many active IPO transactions is that partner currently running, and will they personally attend all-hands drafting sessions?
- Underwriter counsel relationships: The lead underwriter will hire its own counsel (typically a different major firm). The two counsel teams must have a functional working relationship — they will be in the same room for weeks. Ask which underwriters' counsel your IPO counsel works with most often and whether there are any adversarial relationships to be aware of.
- Fixed fee vs. hourly: Engagements run either hourly against a blended estimate or as a fixed fee for the defined IPO scope, with hourly billing beyond it. Get the specific fee proposal in writing before engaging.
Leading IPO Counsel Firms
| Firm | IPO Profile | Sectors |
|---|---|---|
| Wilson Sonsini Goodrich & Rosati | Dominant in technology and life sciences IPOs; Silicon Valley anchor; highest volume of tech IPOs by deal count | SaaS, semiconductor, internet, biotech |
| Cooley LLP | Second most active tech IPO firm; strong venture capital and startup client base that feeds IPO pipeline | SaaS, marketplace, biotech |
| Latham & Watkins | Leading capital markets practice across all sectors; particularly strong for larger IPOs and financial sponsor exits | All sectors; particularly strong in PE-backed deals and financial services |
| Fenwick & West | Active in mid-market technology and life sciences IPOs; strong Silicon Valley relationships | SaaS, enterprise software, biotech |
| Ropes & Gray / Goodwin Procter | Strong in life sciences and private equity-backed IPOs; East Coast oriented | Biotech, healthcare, financial services, PE-backed |
IPO Counsel — Who Led Which Deals
Wilson Sonsini — The Silicon Valley Volume Franchise
Wilson Sonsini describes itself as having advised more US technology companies on their IPOs than any other law firm — a credible claim rooted in structure: the firm's client relationships with venture-backed companies typically begin at the Series A or B stage and carry through to the IPO, producing a standing pipeline of registration work across enterprise software, cloud infrastructure, life sciences, and fintech. For companies evaluating counsel, the practical takeaway is pipeline depth: ask any candidate firm for its completed IPO list in your sector over the last 24 months rather than relying on brand alone.
Cooley — The Growth-Stage Franchise (Snowflake, 2020)
Cooley's venture-stage client base feeds a steady stream of IPO mandates, and Snowflake's 2020 offering is the verified example of the model working: contemporaneous Bloomberg Law coverage identified Cooley as the big-law winner of the year's marquee software IPO, down to a venture-arm equity stake in the client. Retail-heavy structures show why counsel depth matters wherever the mandate lands: Robinhood's 2021 IPO reserved an unusual 20–35% of shares for its own customers, and Reddit's 2024 directed share program for users and moderators ran through a multi-year review — both demanded securities and FINRA analysis well beyond a standard S-1. Cooley competes head-to-head with Wilson Sonsini for growth-stage technology mandates.
WeWork — Skadden Could Not Prevent S-1 Withdrawal (2019)
Skadden, Arps, Slate, Meagher & Flom served as WeWork's IPO counsel during the 2019 S-1 process. Despite Skadden's reputation as one of the leading capital markets practices in the US, the counsel engagement could not prevent the S-1 withdrawal — because the problems with the WeWork offering were not legal problems. The governance disclosures (supervoting shares, founder succession provisions) were legally permissible, even if institutional investors found them unacceptable. The related-party transactions were disclosed in accordance with SEC requirements, even if the disclosures were damaging. The WeWork case is a useful reminder that IPO counsel resolves legal and disclosure compliance problems — it cannot resolve business model problems, governance culture problems, or management credibility problems that ultimately determine whether institutional investors will participate in an offering.
Back to: Building Your IPO Team
Overview of all eight IPO advisor roles, engagement timing, and fee structures.