$WDC insider trading
Over the last 12 months, Western Digital insiders reported no purchases and 36 sales totaling $69.8M across SEC Form 4 filings. 64% of those filings were made under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- — 0 events
- Sold · 12m
- $69.8M 36 events
- Events · 12m
- 36 Form 4 filings, grouped
- Insiders · 12m
- 10 distinct reporters
- 10b5-1 share
- 64% of events, not dollars
All insider trades
Scroll the table sideways for price, value and marks.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Sep 1, 2026 | STREETER STEPHANIE AD | ▼ Sale | 5,600 | $449.87 | $2.5M | -13.9% | 3 tranches · indirect |
| Aug 27, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 1,483 | $469.51 | $696K | -1.3% | plan · 2 tranches |
| Aug 24, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 919 | $454.12 | $417K | -0.8% | plan · 2 tranches |
| Aug 11, 2026 | Tan IrvingChief Executive Officer · O·D | ▼ Sale | 20,000 | $444.97 | $8.9M | -3.4% | plan · 7 tranches |
| Jul 28, 2026 | Cole Martin ID | ▼ Sale | 192 | $462.77 | $89K | -0.9% | plan · 2 tranches |
| Jul 28, 2026 | Cole Martin ID | ▼ Sale | 3,808 | $448.66 | $1.7M | -15% | plan · 30 tranches |
| Jul 21, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 808 | $529.63 | $428K | -0.7% | plan |
| Jun 9, 2026 | Cole Martin ID | ▼ Sale | 720 | $536.01 | $386K | -2.8% | plan · 14 tranches |
| Jun 9, 2026 | Cole Martin ID | ▼ Sale | 3,280 | $511.16 | $1.7M | -11.1% | plan · 30 tranches |
| Jun 5, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 432 | $545.6 | $236K | -0.4% | plan |
| Jun 1, 2026 | Gubbi Vidyadhara KChief of Global Operations · O | ▼ Sale | 2,475 | $556.24 | $1.4M | -2.8% | — |
| May 28, 2026 | KIDDOO BRUCE ED | ▼ Sale | 750 | $528.52 | $396K | -16.1% | — |
| May 22, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 308 | $488.61 | $150K | -0.3% | plan |
| May 4, 2026 | Gubbi Vidyadhara KChief of Global Operations · O | ▼ Sale | 4,674 | $443.18 | $2.1M | -4.9% | — |
| May 1, 2026 | Tan IrvingChief Executive Officer · O·D | ▼ Sale | 20,000 | $411.84 | $8.2M | -3.2% | plan · 9 tranches |
| Apr 21, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 363 | $377.09 | $137K | -0.3% | plan |
| Mar 6, 2026 | Gubbi Vidyadhara KChief of Global Operations · O | ▼ Sale | 8,518 | $255.32 | $2.2M | -7.9% | — |
| Mar 4, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 9,324 | $268.27 | $2.5M | -7.1% | plan · 2 tranches |
| Mar 4, 2026 | Gubbi Vidyadhara KChief of Global Operations · O | ▼ Sale | 10,148 | $270.31 | $2.7M | -8.6% | 2 tranches |
| Mar 2, 2026 | Cole Martin ID | ▼ Sale | 6,000 | $271.67 | $1.6M | -16.9% | plan · 14 tranches |
| Feb 26, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 214 | $286.11 | $61K | -0.2% | plan |
| Feb 24, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 438 | $282.33 | $124K | -0.3% | plan · 2 tranches |
| Feb 17, 2026 | Davis Brian ScottChief Sales & Mrktng Officer · O | ▼ Sale | 10,000 | $279.16 | $2.8M | -7.6% | plan · 12 tranches |
| Feb 6, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 6,780 | $270.49 | $1.8M | -4.7% | — |
| Feb 5, 2026 | MASSENGILL MATTHEW ED | ▼ Sale | 36,926 | $260.43 | $9.6M | -100% | plan · 11 tranches · indirect |
| Feb 2, 2026 | Tan IrvingChief Executive Officer · O·D | ▼ Sale | 20,000 | $255.44 | $5.1M | -3.1% | plan · 17 tranches |
| Jan 21, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 447 | $229 | $102K | -0.3% | plan |
| Dec 5, 2025 | Gubbi Vidyadhara KChief of Global Operations · O | ▼ Sale | 22,820 | $163.16 | $3.7M | -15.2% | 3 tranches |
| Dec 4, 2025 | Alexy KimberlyD | ▼ Sale | 2,000 | $160.08 | $320K | -55.8% | — |
| Dec 2, 2025 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 2,801 | $160.57 | $450K | -1.9% | — |
| Dec 1, 2025 | Cole Martin ID | ▼ Sale | 6,000 | $162.62 | $976K | -14.5% | plan · 8 tranches |
| Nov 25, 2025 | Oulman RoxanneD | ▼ Sale | 1,800 | $154.42 | $278K | -31.8% | — |
| Nov 25, 2025 | Alexy KimberlyD | ▼ Sale | 1,768 | $154 | $272K | -33% | — |
| Nov 5, 2025 | Cole Martin ID | ▼ Sale | 10,000 | $161.32 | $1.6M | -20.2% | plan · 11 tranches |
| Nov 3, 2025 | Tan IrvingChief Executive Officer · O·D | ▼ Sale | 20,000 | $150.69 | $3.0M | -3% | plan · 6 tranches |
| Sep 4, 2025 | Gubbi Vidyadhara KChief of Global Operations · O | ▼ Sale | 11,343 | $90.29 | $1.0M | -7% | — |
| Aug 28, 2025 | Zamiska Gene M.SVP & Princ. Acctg Officer · O | ▼ Sale | 353 | $80.9 | $29K | -1.3% | plan |
| Aug 26, 2025 | Zamiska Gene M.SVP & Princ. Acctg Officer · O | ▼ Sale | 814 | $79.1 | $64K | -2.8% | plan |
| Aug 22, 2025 | Zamiska Gene M.SVP, Global Accounting & Chief · O | ▼ Sale | 4,988 | $75.35 | $376K | -14.4% | plan · 2 tranches |
| Aug 22, 2025 | Tregillis Cynthia LChief Legal Officer & Corp Sec · O | ▼ Sale | 14,067 | $74.78 | $1.1M | -9.4% | plan |
| Aug 19, 2025 | Tan IrvingChief Executive Officer · O·D | ▼ Sale | 8,621 | $75.9 | $654K | -1.4% | plan |
| Aug 13, 2025 | Gubbi Vidyadhara KChief of Global Ops · O | ▼ Sale | 9,544 | $75.69 | $722K | -5.8% | 2 tranches |
Every $WDC filing on this page is one API call away
The same Form 4 data over REST or MCP, already grouped into events with the plan flag and the dollar value read. A free key does 100 calls a day and needs no card. Prefer email? Western Digital filings can reach your inbox instead.
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. This page shows open-market activity: purchases (code P), sales (S) and dispositions back to the issuer (D). Scheduled compensation events such as stock grants and option exercises are also filed on Form 4 but carry no trading signal, so they are not shown and counts here can be lower than the raw EDGAR filing total. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $WDC feed.