greeksoup/ stocks
Stocks / United States / WDC / Planned sales

Western Digital Corp. planned insider sales

In the twelve months since 23 September 2025 insiders at Western Digital Corp. filed 45 Form 144 notices of planned sales, 260,483 shares worth $77.8 million at the time of filing, from 12 sellers. The latest, filed 4 September 2026: Cynthia Lock Tregillis (officer), 432 shares worth $194,918, planned for around 4 September 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

FiledSellerRelationshipSharesValuePlanned saleBrokerHow acquiredFiling
4 September 2026Cynthia Lock TregillisOfficer432$194,9184 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 September 2026Vidyadhara K GubbiOfficer1,795$825,4724 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
31 August 2026Streeter Stephanie AAssociated To Affiliate 10,000$4.5 million31 August 2026FIDELITY BROKERAGE SERVICES LLCStock AwardForm 144
27 August 2026Cynthia Lock TregillisOfficer1,007$481,70927 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
26 August 2026Cynthia Lock TregillisOfficer476$214,57126 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
24 August 2026Cynthia Lock TregillisOfficer684$305,18024 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
21 August 2026Cynthia Lock TregillisOfficer235$112,15821 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
11 August 2026Irving TanOfficer, Director20,000$8.9 million11 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
21 July 2026Cynthia Lock TregillisOfficer808$427,94121 July 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
9 June 2026Martin I ColeAffiliate8,000$4.2 million9 June 2026J.P. Morgan Securities LLCCompensationForm 144
5 June 2026Cynthia Lock TregillisOfficer432$235,6995 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
1 June 2026Vidyadhara K GubbiOfficer2,475$1.4 million1 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
28 May 2026Kiddoo Family Trust U/A Dtd 02/07/2012Director750$396,39028 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
27 May 2026Cynthia Lock TregillisOfficer214$115,48127 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
22 May 2026Cynthia Lock TregillisOfficer308$150,49222 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
21 May 2026Cynthia Lock TregillisOfficer106$48,64021 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
11 May 2026Brian Scott DavisOfficer10,000$5.0 million11 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesPerformance and Restricted StockForm 144
4 May 2026Vidyadhara K GubbiOfficer4,674$2.1 million4 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
1 May 2026Irving TanOfficer, Director20,000$8.2 million1 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
21 April 2026Cynthia Lock TregillisOfficer363$136,88421 April 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
6 March 2026Vidyadhara K GubbiOfficer8,518$2.2 million6 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 March 2026Cynthia Lock TregillisOfficer777$200,3964 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 March 2026Cynthia Lock TregillisOfficer8,547$2.3 million4 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 March 2026Vidyadhara K GubbiOfficer10,148$2.7 million4 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
2 March 2026Martin I ColeAffiliate6,000$1.7 million2 March 2026J.P. Morgan Securities LLCCompensationForm 144
26 February 2026Cynthia Lock TregillisOfficer214$61,22826 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
24 February 2026Cynthia Lock TregillisOfficer308$86,76424 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
23 February 2026Cynthia Lock TregillisOfficer130$36,89823 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
17 February 2026Brian Scott DavisOfficer10,000$2.8 million17 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesEmployee Stock Purchase Plan; Restricted StockForm 144
6 February 2026Cynthia Lock TregillisOfficer6,780$1.8 million6 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
5 February 2026Massengill Living TrustDirector36,926$9.9 million5 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
2 February 2026Irving TanOfficer, Director20,000$5.1 million2 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
21 January 2026Cynthia Lock TregillisOfficer447$102,36321 January 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
5 December 2025Vidyadhara K GubbiOfficer2,474$413,9005 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
5 December 2025Vidyadhara K GubbiOfficer6,469$1.1 million5 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesEmployee Stock Purchase Plan; Performance Shares; Restricted StockForm 144
4 December 2025Kimberly AlexyDirector2,000$320,1654 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
4 December 2025Vidyadhara K GubbiOfficer13,877$2.2 million4 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesEmployee Stock Purchase Plan; Performance Shares; Restricted StockForm 144
2 December 2025Cynthia LOCK TREGILLISOfficer2,801$449,7522 December 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesPerformance Shares; Restricted StockForm 144
26 November 2025Gene M ZamiskaOfficer814$127,82226 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
25 November 2025Kimberly AlexyDirector1,768$272,27225 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
25 November 2025Roxanne OulmanDirector1,800$277,95625 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
24 November 2025Gene M ZamiskaOfficer458$65,30624 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
21 November 2025Gene M ZamiskaOfficer468$65,28621 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144
5 November 2025Martin I ColeAffiliate16,000$2.4 million5 November 2025J.P. Morgan Securities LLCCompensationForm 144
3 November 2025Irving TanOfficer, Director20,000$3.0 million3 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted StockForm 144

A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was. Value is the filer's own aggregate market value. Whether the sale happened shows up later on Form 4, on the insiders page.

Source

Form 144 filings on EDGAR for Western Digital Corp.: the company's filing index, each notice read from its own XML.

The same record on your computer

GreekSoup is also a free program for your own computer. It reads these same filings for the names you follow, refreshed as they land, with no account. One pasted line installs it.

Install