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Founders think the deal is the hard part. It's not. The hard part is the twelve months after, and almost nobody staffs it properly.
70 to 90% of M&A deals fail to deliver the value they promised. Most of that failure isn't strategic. It's operational.
01 — ONE LEADERSHIP TIP
Eight subsidiaries. One company. That was the mandate I was handed.
The goal was strength. We wanted to win big accounts, including government contracts across the DACH market. On paper, that's exactly what should happen. In practice, it's where most integrations fall apart, and I watched ours almost do it.
Eight companies, eight CEOs, eight cultures that had all worked well enough to get bought in the first place. Nobody in leadership was asking what made each one actually good. Everyone was focused on the win, not on what would break.
You can't run one company with eight CEOs. That part had to be eliminated. What wasn't easy was that one of those CEOs was my best friend. I sat across from him and told him his role was gone. That conversation doesn't show up in any case study, but it's the real weight of this work. You're ending someone's role, sometimes someone you care about, because the math demands it.
While we were cutting CEOs and merging cultures, the clients did not care about any of that. My own job was the relationship layer between the client and the engineering team. I checked in with the client every week to confirm we were solving the real problem. Then I translated that back to engineers who had time to actually think it through, because I'd already done the filtering. That's what made delivery trustworthy enough to win the bigger accounts.
When we rolled out the new integrated processes, each company believed it already knew best. They were tech companies, of course they thought that. Forcing one set of rules on eight companies built the backlash you'd expect. At one point we brought in a new CEO for a unit that used to have its own, and he didn't understand that the company's performance was tied directly to the person who'd built its culture. Within months it wasn't working. We replaced him again.
None of this means you don't cut anything. I audited every resource across all eight companies and eliminated redundant HR roles, redundant ops roles, and most of the CEOs. But we did it after understanding what each company's core actually was, not before.
5 mistakes show up in almost every integration I've seen, including my own.
- culture due diligence happens after signing, not before. only 4% of companies put culture specific questions into diligence at all. everyone checks the balance sheet. almost nobody checks how decisions actually get made day to day.
- leadership never agrees on which culture wins. disagreement among leaders on the target culture drives 48% of failed integrations. nobody decides on purpose, so it defaults to whoever has more headcount.
- one process gets forced on everyone to make management easier. this is my own story. its faster for the acquirer, not better for the business, and its what pushes good people out the door.
- retention gets assumed instead of planned. 33 to 34% of acquired employees leave within year one. nobody built a retention plan around the specific people who were the actual asset. they planned around the product and the logo.
- founders get sidelined instead of given a real role. no clear authority, no clear scope, and they either disengage or fight it out. the buyer thinks the founder already won by selling. the founder just lost their company and got handed a vague title.
The Shift: Cutting cost and hollowing out the thing you paid for look identical on a spreadsheet. The only way to tell them apart is knowing, before you cut, exactly what made each part of the business work.
Do this in the next 5 minutes: Write down, for one unit or team you're about to restructure, the single thing that unit does differently that actually works. Not the process. The reason behind it. If you can't answer that in five minutes, you're not ready to restructure it yet.
02 — ONE COMPANY WORTH KNOWING
Two AI acquisitions from the same month in 2025 show this exact split. Google paid $2.4B for Windsurf and took the CEO and top engineers, licensed the tech, and left the rest of the team with no direction. Grammarly acquired Superhuman the same month, kept the full 100-person team, and three months later renamed the entire parent company after what it had bought. MIT Sloan found 33% of acquired startup employees leave within year one. EY puts it at 75% of key roles gone within three years. Grammarly's team stayed because someone ran integration as an actual job, the same way I ran mine across eight subsidiaries.
03 — ONE THING TO ACT ON
- Give the integration one owner. Not a committee.
- Get the earnout terms in writing. Assume it pays zero otherwise.
- Put your role and authority in the contract, not a conversation.
- Name your most valuable people. Build their retention plan first.
- Plan for 12 to 24 months. Not 90 days.
The Takeaway: Before you sign anything, know what you're actually selling: the product, the team, or both. Get the earnout in writing and assume it pays nothing. Ask who owns integration on their side, by name, not by department. If nobody can answer that, the deal isn't ready yet, no matter how good the number looks.
I've run this exact work myself, across eight companies, making the calls that decide whether an integration holds or falls apart. If you're heading into a merger, preparing for exit, or you're inside an integration that's already off track, I can advise on it or run it with you directly. Reply or DM me OPERATOR, or book time directly.
Alisa Reznik · COO | Executive Advisor | Keynote Speaker
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