Updated Jul 16, 2026 · Last SEC filing 2026-06-23
WESTERN DIGITAL CORP (WDC) has filed 37 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-23. 4 Form 8-K material event filings were reported by WDC in the last 90 days. 11 Form 144 notices of proposed sale were filed for WDC stock. InsiderAlpha tracks every WDC SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Computer Storage Devices (SIC 3572) |
|---|---|
| SEC CIK | 0000106040 |
| Form 4 filings (90d) | 37 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 11 |
| Latest Form 4 filing | 2026-06-23 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Tan Irving | Chief Executive Officer | F — Tax withholding / forfeiture | 1.1K | $746.23 | $813K | SEC | |
| Davis Brian Scott | Chief Sales & Mrktng Officer | M — Option exercise | 7 | $0.00 | — | SEC | |
| Tan Irving | Chief Executive Officer | M — Option exercise | 52 | $0.00 | — | SEC | |
| Davis Brian Scott | Chief Sales & Mrktng Officer | F — Tax withholding / forfeiture | 961 | $746.23 | $717K | SEC | |
| Shihab Ahmed Mohammed | Chief Product Officer | F — Tax withholding / forfeiture | 5.1K | $712.13 | $3.67M | SEC | |
| Shihab Ahmed Mohammed | Chief Product Officer | M — Option exercise | 51 | $0.00 | — | SEC | |
| Cole Martin I | Director | S — Open-market sale | 48 | $531.62 | $26K | SEC | |
| Cole Martin I | Director | S — Open-market sale | 48 | $542.79 | $26K | SEC | |
| Cole Martin I | Director | S — Open-market sale | 48 | $543.92 | $26K | SEC | |
| Cole Martin I | Director | S — Open-market sale | 57 | $538.81 | $31K | SEC | |
| Cole Martin I | Director | S — Open-market sale | 48 | $533.97 | $26K | SEC | |
| Cole Martin I | Director | S — Open-market sale | 112 | $536.27 | $60K | SEC | |
| Cole Martin I | Director | S — Open-market sale | 64 | $530.27 | $34K | SEC | |
| Cole Martin I | Director | S — Open-market sale | 48 | $528.07 | $25K | SEC | |
| Cole Martin I | Director | S — Open-market sale | 32 | $539.82 | $17K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for WESTERN DIGITAL CORP (WDC). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Davis Brian Scott | 34 | $7.34M |
| Tan Irving | 22 | $9.63M |
| Tregillis Cynthia L | 21 | $2.68M |
| Gubbi Vidyadhara K | 18 | $7.38M |
| Cole Martin I | 15 | $386K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in WDC insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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