In simple terms: A value investment entered as a private-owner general was unlocked by a later third-party tender. The 1965 $3.188 million tender exit is included in the Buffett Partnership special-situations record with an evidence grade of A- - directly quantified, but anonymous.

What Buffett saw

Buffett said his largest General-Private Owner investment at the end of 1964 was disposed of in 1965 through a tender offer. The company was not named.

The interesting part is not only the dollar gain. Buffett had bought the business as though a private owner could profitably own all of it. The tender came later, which turned a value thesis into a corporate-action exit without changing the reason he had originally bought the shares.

How the situation was meant to work

The tender made the gain real. Buffett also separated appreciation already recorded at the end of 1964 from value created during 1965, a small accounting detail that stops the year's result from being overstated.

Because $451,000 of appreciation already existed at year-end 1964, he separated the $3.188 million realised gain from the $2.737 million economic gain attributable to 1965.

The timeline, capital and risk

Capital disclosed: One of BPL's largest 1964 private-owner positions; exact average capital undisclosed.

Time frame: Position held into 1965.

The missing company and capital base mean the reader cannot calculate a percentage return or inspect the tender terms. The safe lesson is about classification: a tender can be the exit, not necessarily the entry thesis.

What happened

Outcome: The investment was disposed of through the tender offer.

What the return means - and the lasting lesson

Return record: $3.188 million realised gain; $2.737 million economic gain attributed to 1965 after prior appreciation.

The entry thesis matters. A later tender can be the exit mechanism for a value investment without making the original purchase a pre-announcement work-out.

This guide is educational information, not a recommendation, investment advice or a substitute for reading the underlying disclosure.