Companion files

Mergers and Acquisitions

A Practitioner’s Guide to the Seven Prices of One Deal, and Which of Them Is True

These are the four Excel workbooks that go with the book. Every figure the book prints is reproduced in them by a live formula rather than a typed constant — move the target's net debt, flip a lease into the covenant, change the amortisation life or the cost of capital, and every dependent number moves with it. Each one ends with a Checks sheet setting the printed figure beside the computed one: 144 controls in all, every one green. If a control ever reads FAIL, the workbook is wrong, not the book.

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All four workbooks

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Everything described below is inside it, with the read-me.

The four workbooks

Conventions used throughout

Blue texta hardcoded input — you may edit these
Yellow fillan input cell; everything else on the sheet is a formula
Black texta formula — do not overtype these
Checks sheetthe printed figure beside the computed one, with a PASS or a FAIL

Why the checks matter more than the models

A workbook that agrees with a book proves nothing on its own — the author wrote both. What the Checks sheets do is different: they force the model to reproduce, from a formula, a number that was printed before the model existed.

On this book the discipline worked in the other direction repeatedly. The reference model went through eight adversarial audit passes and carries a journal of sixty corrections at the end of its source. Four of them reversed a conclusion that had already been written on the page — including the one about the leases, where an earlier version billed the rent twice and printed a headline of minus 19.8485 per cent because that looked like the rigorous answer. One version was shipped with the proof of its own error printed in its output file and unread, which is why the model now refuses to print at all if the year-one bridge does not close, and refuses to print a sentence claiming a movement it does not compute.

The last two passes found no arithmetic error at all. What they found were sentences that were true when they were written and false when they were read.

Opening the files

The workbooks open in Microsoft Excel, LibreOffice Calc, Google Sheets and Numbers. They use no macros and no add-ins, so nothing needs to be enabled or trusted. If your spreadsheet asks to update links on opening, decline — there are none.

Articles on this book

Also by Julian R. Sterling

The other books with companion files. The full list of titles is on the author page.