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Our mission is to be your "principal" consultant - a trusted business adviser that you turn to when you encounter a complex issue, a tight deadline, a staffing need, or other organizational challenges.


We ensure that you receive exceptional service and quality work every time by hiring only the most highly qualified professionals and by maintaining a positive, energetic, results-oriented atmosphere within our organization and in all of our interactions with you and your team.


We have found that by consistently providing high quality results and building strong relationships, our business partners continue to seek us out for additional projects and recommend us to their peers. We look forward to working with and helping you and your organization achieve your goals!

While we offer a wide range of professional services, we do not do external audits, tax or valuations.


Ryan Volk​

Ryan Volk is a co-founder of PCG with over 15 years of experience in accounting, finance and leadership roles. Ryan began his career at KPMG in the San Francisco office, working in the audit practice and finishing his time at KPMG in the M&A due diligence practice. After nine years at KPMG, Ryan moved into industry working as a Controller for a software Company responsible for leading month-end processes, financial reporting processes as well as implementing various topics and operations. After a few years in industry, Ryan missed working in client services and gravitated towards technical accounting consulting where he served a wide-range of companies, from venture-backed start-ups to mature public companies. Ryan has extensive experience in technical accounting, SEC Reporting, financial statement preparation, audit assistance, M&A and IPO readiness.

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Aaron Einhorn​

Aaron Einhorn is a co-founder of PCG with a proven track record providing audit and advisory services to a variety of companies in the bay area in areas such as SEC reporting, financial statement preparation, corporate and technical accounting, including complex transactions such as debt offerings, initial public offerings and mergers and acquisitions. Aaron began his career at Deloitte & Touche's San Jose office, serving in both the audit practice and the accounting and reporting advisory practice before leaving to work as an independent consultant and eventually forming Principal Consulting Group.


Our team has a deep wealth of knowledge in accounting and finance from our experience as big-4 auditors, consultants, and industry professionals. Each of our team members has a proven track record of working together to provide quality and efficiency.

Our team has focused experience in areas such as SEC reporting and financial statement preparation, SOX and internal controls, revenue recognition, stock-based compensation, technical accounting research, initial public offerings, pre/post M&A services, and more.

Our team has experience working with early stage start-ups to multi-billion dollar corporations in a variety of industries. Principal Consulting Group provides bright people and the right ideas to help your business grow.

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