SanDisk rejected Samsung's $5.85B bid in 2008 and sold to Western Digital for $19B

On September 16, 2008 — one day after Lehman Brothers filed — Samsung Electronics made an unsolicited $5.85 billion offer for SanDisk, about $26 a share. SanDisk's board rejected it almost immediately as inadequate, wagering that a flash-memory franchise built over two decades was worth more than a cash premium set in a falling market.

The bet looked reckless within weeks. Samsung walked away on October 22, citing growing uncertainties in SanDisk's business and a supply glut that had depressed NAND flash prices across the industry. SanDisk spent the downturn shrinking into the glut, waiting out the same price collapse its suitor had called unbearable.

The vindication took seven years. NAND demand compounded through the smartphone boom, SanDisk rode the recovery, and in October 2015 Western Digital agreed to buy the company for about $19 billion, $86.50 a share in cash and stock — more than three times Samsung's rejected offer, in a wave of chip-industry consolidation.

Told no to $26 a share in 2008; sold at $86.50 a share to Western Digital for about $19 billion in 2015 — over three times Samsung's offer.

The board priced SanDisk across a full memory cycle, not at the bottom of one; $26 a share did not pay for the patent position and the coming smartphone buildout.

NAND demand kept compounding through the downturn, so the value of staying independent grew faster than the premium Samsung had put on the table.

Selling in a panic locks in the trough. The same glut that scared Samsung off was the entry point — for the owner who simply kept the asset.

Takeover premiums are priced off the cycle you are in. If your market keeps compounding through the downturn, the premium ages badly — holding through the trough can be worth more than any bid.

Western Digital closed the acquisition in 2016 and made SanDisk's flash business the core of its storage strategy. The story came full circle a decade later: after activist pressure, Western Digital split back into hard-drive and flash companies, with the flash side taking the SanDisk name again — the asset the 2008 board declined to sell at $26 now stood on its own once more.