What Are the Key Factors for Successful Post-Merger Integration?

People have long been searching for the success factors of post-merger integration. Merger transactions follow a similar pattern, if only for legal reasons—for example, due to the milestones of signing and closing, along with the associated planning and tasks. The transaction—an acquisition or merger of companies—is followed by the transformation known as post-merger integration, or PMI for short. Is there also a pattern for the subsequent transformation? 

Post-merger is not just post-merger

A wedding is a comparable event, an extraordinary “transaction.” In detail, every wedding differs depending on the people involved. In the end, it always comes down to the union of two partners who bring a lot to the relationship that the other doesn’t fully know. The marriage—that is, the transformation—then unfolds very differently. The problems of everyday life become apparent soon after the celebration, once the champagne corks have been cleared away. This also applies to every post-merger integration. Every program is unique, depending on the size and structure, background, and culture of the companies involved. Yet the critical issues are often similar. So the question arises: can there be a formula for the successful execution of a post-merger integration?

10 - 100 - 1000 as a formula

These numbers mark key milestones in the management of any integration and are, of course, not set in stone.

• Launch – 10 days. You never get a second chance to make a first impression. And that impression should be positive, sparking interest and openness for the next steps. How the transaction is announced, along with the messages and the people delivering them, demonstrates that the upcoming transformation is both important and necessary. The first step is taken to ensure that executives and employees are involved and do not merely feel like passive participants. This means that the start of any post-merger integration sets a very important positive tone.

• Cornerstones – 100 Days. The key decisions for working together should be made by management during the famous “First 100 Days.” These include selecting the team and leadership group, and defining the most important steps for implementing the strategy to achieve the transaction’s goals. As long as these fundamental basics are not established, everyone will do one thing—wait and see!

• Results – 1,000 days. Of course, initial results of the transformation should be achieved beforehand, such as the implementation of a new structure. Or initial benefits for those involved should emerge, such as new opportunities for professional development or for their own careers. The key results—the very reasons the transaction took place in the first place, such as gaining market share or increasing revenue—should be achieved sustainably in the medium term, i.e., within two to four years. Because that is ultimately what it is all about. And this “deal story” should be clearly communicated at the outset—that is, within the first 10 days—and be understandable to all stakeholders. The circle is complete!  

This narrative structure is a key success factor for post-merger integration. The chances of achieving the targeted goals demonstrably increase significantly. The transformation follows a consistent plan. Changes “on the fly,” which are always possible at any time, are easier to understand if the “big picture” is clear and compelling.

To put it bluntly: Not every post-merger integration succeeds with the 10-100-100 approach, but integration is becoming successful more and more often.