Why M&A keeps failing on people
80% of deals fail to deliver financial benefit. Almost always it's not the platform, the price or the synergy model — it's how the technology team was treated through the change.
All resources
The book
People First
The playbook for successful technology team integration through M&A. Written by Hutton Henry. Published by Rethink Press, 2018. Still the field manual we use on every Beyond M&A engagement — now sharpened by the AI transition.
Rethink Press · 2018
Why it still matters in 2026
The thesis hasn't changed. The stakes have.
When People First was published in 2018, the argument was that the technology team was the asset most often ignored in M&A — and the one most likely to walk. Eight years later, AI has compressed advisory pyramids into senior-led Pods, and the acquired company's operating model now lives in the heads of three or four people, not thirty. Mishandle them and you destroy the deal thesis on Day 1.
The frameworks in the book — the four integration archetypes, the People First Day-1 communications model, the conation-led role redesign — are exactly the tools we now deploy in our Kolbe Psychology practice. The book is the manual; the practice is how we run it for you.
Inside the book
Five ideas we still use on every deal.
Tech teams are not resources
Engineers, architects and product leaders carry the tacit knowledge that makes the acquired business actually work. Treat them as line items and they leave — taking the operating model with them.
The integration archetypes
Absorb, Preserve, Symbiose, Holding. Choosing deliberately — against the deal thesis — instead of defaulting to absorb is the single biggest predictor of post-close value retention.
Conation, not just culture
Culture decks describe how a team feels. Kolbe describes how they instinctively act under pressure. The latter is what you need to map before Day 1.
Day 1 to Day 100
A pragmatic playbook for the first hundred days — communications, decision rights, tooling, reporting lines — designed to protect the people who have to deliver the synergies.
Read the whole thing
Get the full playbook.
Paperback and Kindle. Used by Corp Dev teams, integration leads and PE operating partners as the standard reference for tech M&A integration.
Who it's for
If you sit in one of these seats, this is your manual.
- Corp Dev leaders running tech-led acquisitions
- PE operating partners after the deal closes
- Integration leads on Day 1 of a tech merger
- CTOs and CIOs being acquired — or doing the acquiring
- Advisors structuring the people side of a transaction
- Founders preparing their team for exit
From book to practice
Want the playbook run for you?
Our Kolbe Psychology practice operationalises the People First framework — diagnostics, integration archetype selection, Day 1–100 plans.