Western Digital Insiders Cashed $30 Million Out of the Rally Wall Street Says to Buy

Western Digital's officers and directors made 110 sales in six months and never bought a share [1], while Wall Street's weekend notes told investors to buy the Toshiba dip [2]. The CEO's six months of selling sit about $33,000 shy of his estimated 2026 pay [1].

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Vincent JiangOctober 6, 2026 · 3 min read

An opened 2.5-inch Western Digital hard drive showing its platter and the read-write head on the actuator arm — A Western Digital 2.5-inch hard drive opened to show the platter and the read-write head on its actuator arm. Recording heads are the part at the center of the TDK bidding reported this week, and Western Digital builds its own.

Western Digital Insiders Cashed $30 Million Out of the Rally Wall Street Says to Buy — slide 1 — A Western Digital 2.5-inch hard drive opened to show the platter and the read-write head on its actuator arm. Recording heads are the part at the center of the TDK bidding reported this week, and Western Digital builds its own.

The pay number and the sell number arrived together

Western Digital filed its annual proxy on Monday, October 5 ¹. Quiver Quantitative's parse of that filing puts chief executive Irving Tan's 2026 pay at $17,168,701, up 34.97% from $11,165,296 a year earlier ¹. Over the preceding six months the same executive sold 40,000 shares in 16 open-market trades worth an estimated $17,136,193 ¹. The pay figure and the selling figure sit about $33,000 apart.

Irving Tan seated on a panel at the Crawford Australian Leadership Forum, his name card on the table in front of him — Irving Tan, left, on a panel with Chris Vein, center, and Andrew Stevens at the Crawford Australian Leadership Forum in 2015. Tan is now Western Digital's chief executive. · Crawford Australian Leadership Forum via Flickr

Three days, three directions

The filing landed mid-whipsaw. Nikkei reported on Friday, October 2 that Toshiba plans to double its data-center drive capacity by its fiscal 2027 ⁶⁷, and Western Digital fell 10.2% that day while the S&P 500 rose 0.7% ³. A weekend of analyst notes brought a 6.7% rebound on Monday ⁴. Then another slide on Tuesday: Western Digital down 6.4% and Seagate down 8.9% by midday, after Bloomberg reported the two bidding billions for TDK's hard-drive head unit, the only independent maker of the part ⁵⁶. The stock is still up about 156% this year, trades at 11.3 times sales, and sits 45% below its June record ³⁷.

Wall Street said buy; the Form 4s said sell

Bernstein called the selloff "a storm in a teacup" and said it would buy both drive makers ². Citi said the industry is under-shipping demand by a wide margin ². Morgan Stanley's Erik Woodring, after "the last 60 hours" of industry calls, called the decline a compelling entry ⁷. None of that weekend copy carried the ownership tally: 110 insider sales in six months, zero purchases ¹.

Six insiders, $30 million, no buyers

Tan's $17.1 million leads six named insiders whose combined sales come to about $30.6 million ¹. Their trade counts, 16, 3, 76, 3, 11 and 1, add to exactly 110: the named six account for every open-market sale in the tally ¹. The buying sat elsewhere. JPMorgan added 17,007,789 shares in the second quarter ¹, and Western Digital itself spent $672 million on buybacks in its June quarter ⁸.

The six named insiders made all 110 sales, $30.6 million combined

Data

	Value
Irving Tan (CEO)	$17.14M
Vidyadhar Gubbi	$4.27M
Martin Cole	$3.86M
Stephanie Streeter	$2.52M
Cynthia Tregillis	$2.42M
Bruce Kiddoo	$0.4M

Estimated proceeds of open-market sales by the six named Western Digital insiders, six months to early October 2026, in millions of dollars, per Quiver Quantitative's tally of SEC Form 4 filings. Their trade counts sum to 110; no insider purchases were recorded in the period.¹

What the dip buyers own

Fiscal Q4 revenue was $3.75 billion, up 43.8%, with non-GAAP gross margin of 54.4%, up 13.1 points from a year earlier ³⁸. Price per terabyte rose by a high-teens percentage while cost per terabyte fell about 8%, and the difference went to profit ³. Management guided the September quarter to $4.1 billion of revenue and a 55% to 56% non-GAAP gross margin ³⁸.

Gross margin has climbed eight straight quarters; the September print tests the guide

Data

	GAAP gross margin
Q3 '24	36.4%
Q4 '24	37.7%
Q1 '25	39.8%
Q2 '25	41%
Q3 '25	43.5%
Q4 '25	45.7%
Q1 '26	50.2%
Q2 '26	54.1%

Western Digital GAAP gross margin, percent of revenue, by calendar quarter, from its SEC filings. Reference line: management's August 5, 2026, guidance of 55% to 56% non-GAAP gross margin for fiscal Q1 2027, restated onto the GAAP basis using the 0.3-point gap between GAAP and non-GAAP margin in the June 2026 quarter; an estimate for a quarter not yet reported.^8,10

The ledger has caveats

The tally is one outlet's parse, and Quiver itself warns parsing errors can occur; a sale records exposure, not opinion ¹. Toshiba called the TDK report "inconsistent" with its understanding, and its main backer, Japan Industrial Partners, said the same ⁹. Western Digital also builds its recording heads in-house, where Toshiba buys every head from TDK, and TrendForce gives Western Digital 48% of the 2026 drive market against Toshiba's 10% ⁶. UBS's Timothy Arcuri still called the episode "a major change in the narrative," because hyperscalers will push Toshiba as much volume as they can ⁷.

The September quarter settles it

The next report arrives with the 55% guide live, and it prints before a single extra Toshiba drive ships, since Toshiba's doubling lands in fiscal 2027 ⁶⁸. Below the guide, the sellers were early; at it, they sold a margin that still works. Wall Street bought the story; the people running the company kept the cash.

Deepdive

AI-generated from this story and its cited sources. Not investment advice.

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