About Sean P. Kelley

About Sean — Your Advocate in a Successful Business Exit

Selling a business is one of the most important financial decisions an owner will ever make. Sean brings years of high-level negotiation, valuation understanding, and deal execution experience to help business owners exit on the right terms, with the right buyer, and with full confidentiality.
Before joining M&A Business Advisors, Sean spent 16 years in global business development with Amgen Inc., where he led and closed over 90 licensing, acquisition, and partnership transactions across the U.S., Asia, and Europe. His career required strategic negotiation, financial assessment, operational evaluation, and the ability to bring parties together under pressure.

Sean’s approach with sellers:

1. Valuation & Aligned Expectations
Most deals that fail do so because expectations were never aligned.
Sean provides a data-driven, transparent assessment of value and works with owners to understand not just price, but timing, transition needs, and deal structure options.

2. Confidential Buyer Outreach
Sean protects confidentiality from day one. He screens buyers financially and strategically before they ever see sensitive information — ensuring owners don’t waste time on tire-kickers or unprepared buyers.

3. Clear Process & Skilled Deal Execution
From valuation through due diligence to closing, Sean manages all aspects of the process so owners can focus on running their business. His experience negotiating complex agreements ensures issues are addressed before they derail a deal, helping sellers move efficiently to the closing table.

Contact Sean for a complimentary consultation at or (805) 559-1171.

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