Western Digital (WDC)Sen. Alan Armstrong disclosed a purchase $1K–$15K

$1,001–$15,000

Reported range · official band, not an exact amount

116 days

Disclosure lag

Traded

Mar 27, 2026

Disclosed

Jul 21, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Jan 27, 2026Layoff notice · 5601 Great Oaks Parkway San Jose CA 95119Layoff notice filed in CA: 47 employees
2. Jan 29, 2026Company filing · Form 8-K · ResultsReported its results
3. Feb 2, 2026Insider · 1 personInsiders: 17 sales (~$5.1M)
4. Feb 5, 2026Insider · 1 personInsiders: 11 sales (~$9.6M)
5. Feb 6, 2026InsiderOfficer sold ~$1.83M of WDC shares in the open market
6. Feb 10, 20265% stakeMANAGED ACCOUNT ADVISORS LLC reported a passive stake (13G) of 2.6%
7. Feb 17, 2026Company filing · Form 8-K · Shareholder rightsChanged the rights of its shareholders
8. Feb 17, 2026Insider · 1 personInsiders: 12 sales (~$2.8M)
9. Feb 23, 2026Company filing · Form 8-K · Bylaws or charter, Other newsChanged its bylaws, charter or fiscal year, and reported other company news
10. Feb 23, 2026InsiderOfficer sold ~$37K of WDC shares in the open market
11. Feb 24, 2026InsiderOfficer sold ~$87K of WDC shares in the open market
12. Feb 26, 2026InsiderOfficer sold ~$61K of WDC shares in the open market
13. Mar 2, 2026Insider · 1 personInsiders: 14 sales (~$1.6M)
14. Mar 4, 2026Insider · 2 peopleInsiders: 4 sales (~$5.2M)
15. Mar 6, 2026InsiderOfficer sold ~$2.17M of WDC shares in the open market
16. Mar 27, 20265% stakeThe Vanguard Group reported a passive stake (13G)

What came next

1. Apr 21, 2026InsiderOfficer sold ~$137K of WDC shares in the open market
2. Apr 29, 20265% stakeVanguard Portfolio Management reported a passive stake (13G) of 5.1%
3. Apr 30, 2026Company filing · Form 8-K · ResultsReported its results
4. Apr 30, 20265% stakeVanguard Capital Management reported a passive stake (13G) of 7.5%
5. May 1, 2026Insider · 1 personInsiders: 9 sales (~$8.2M)
6. May 4, 2026InsiderOfficer sold ~$2.07M of WDC shares in the open market
7. May 11, 2026Insider · 1 personInsiders: 6 sales (~$1.1M)
8. May 26, 2026Company filing · Form 8-K · Executive change, Reg FDChanged a top executive or board member, and shared information with investors“On May 26, 2026, the Board of Directors (the “Board”) of Western Digital Corporation (the “Company”) unanimously appointed Manuvir Das to serve as a member of the Board until the Company’s next annual meeting of stockholders and until his successor is duly elected and qualified.”
9. Jun 2, 2026Company filing · Form 8-K · Unregistered shares, Other newsSold new shares without registering them, and reported other company news
10. Jun 2, 2026Company filing · Form 8-K · Unregistered sharesSold new shares without registering them

How to read Senate eFD periodic transaction report

The STOCK Act is a 2012 US law that requires members of Congress, and some senior staff, to publicly report their stock trades, and those of their spouse and dependent children, within 45 days.

Full guide: What is the STOCK Act?

What else is on file for Western Digital

For Western Digital, OQRO holds 51 insider filings (SEC Form 4 or Form 144), 2 Congress trade reports and 70 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its WDC page.

Other recent filings by Sen. Alan Armstrong

• Senate eFD periodic transaction report at Williams Companies (WMB)Sep 17, 2026
• Senate eFD periodic transaction report at Williams Companies (WMB)Sep 17, 2026
• Senate eFD periodic transaction report at KKR & Co. (KKR)Jul 21, 2026
• Senate eFD periodic transaction report at Globe Life (GL)Jul 21, 2026
• Senate eFD periodic transaction report at Copart (CPRT)Jul 21, 2026

The full history of Sen. Alan Armstrong is on the profile page.

How this filing works

• The STOCK Act

Other disclosures at Western Digital

• SEC Form 4Sep 9, 2026
• SEC Form 4Sep 9, 2026
• SEC Form 144Sep 4, 2026
• SEC Form 144Sep 4, 2026
• House Clerk periodic transaction reportSep 4, 2026
• SEC Form 4Sep 2, 2026

Everything OQRO holds on this company is on its WDC page.