Why Solas O'Brien prioritizes people

Nathan Rust, Senior VP of Corporate Development, Salas O'Brien

Salas O'Brien has completed 30+ mergers with a 100% success rate and 93% cumulative leadership retention.

That doesn't happen by accident.

Nathan Rust, Senior VP of Corp Dev, explains the system behind those numbers. He shares how they screen bad fits on the first call, why their CEO meets every employee from acquired firms, and how a founder-driven sourcing flywheel attracts inbound deals.

In this episode: You'll learn how they screen 200+ opportunities a year down to the ones worth closing, why their initial diligence list is 10 questions, how reverse due diligence works as a real screening tool, and what CEO-led integration meetings mean for retention.

The core argument: Cultural fit isn't a soft metric. Believe it or not, it's the primary filter for deals. EBITDA tells you what you're buying, but people tell you whether it survives.

If you run corp dev at a people-intensive business and wonder why your post-close retention doesn't match your pre-close promises, this episode is for you.

• Why retention is one of the most overlooked risks in M&A
• How cultural compatibility is assessed during early conversations
• Why many buyers damage their reputation by retrading deals
• How equity rollovers align incentives between buyers and sellers
• Why simplicity in diligence often produces better results
• How direct outreach and referrals drive proprietary deal flow
• The role of reverse diligence in evaluating buyer credibility

This episode is sponsored by M&A Science

If you're struggling to retain founder-led leadership teams post-close, the Hub has frameworks for cultural integration and leadership retention to help you actually deliver on what you promised at signing. Get access at www.mascience.com/membership

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This episode is also sponsored by DealRoom

The best M&A teams close deals faster...not because they work harder, but because they have better systems. DealRoom helps you manage your entire deal lifecycle from target identification through close. No more hunting for documents or wondering what's blocking progress.

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[00:04:40] Nathan's Background & How It Shaped His M&A Philosophy

[00:09:25] Why People Are the Primary Deal Filter

[00:11:23] The Three Screening Criteria on Every First Call

[00:16:51] Earnouts, Equity Rollover, and Employee Ownership

[00:21:21] Deal Sourcing: Employee Referrals, Buy-Side Reps, Direct Outreach

[00:33:37] How Introductory Calls Actually Run (And Why They're 90% Personal)

[00:42:10] The 10-Question Diligence List & Reverse Due Diligence

[00:47:50] Valuation Philosophy — Fair Offers, No Retrading

[00:51:10] ESOP Deal Complexity & The Charlotte Deal Story

[00:55:00] Integration: Why the CEO Meets Every Employee

[00:57:44] The Craziest Thing in M&A