Latest filingSep 02, 2026Most recent Form 4
WDC
WESTERN DIGITAL CORP
NasdaqTechnologyComputer Storage Devices
Insider activity for last month from 08/03 to 09/03. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$363M7 sells
Net open-market-$363M8 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period72transactions
- M · Option exercise · dominant36 · 50%
- F · Tax withholding18 · 25%
- A · Grants / awards7 · 10%
- S · Open-market sells7 · 10%
- G · Gifts2 · 3%
- J · Other2 · 3%
Activity by reported role
A joint filing can contribute to multiple roles103transactions
- CS · dominant30 · 29%
- Chief executive officer17 · 17%
- CLO17 · 17%
- CGO13 · 13%
- MO13 · 13%
- Chief financial officer4 · 4%
- CPO4 · 4%
- Director3 · 3%
- CAO1 · 1%
- SVP1 · 1%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (8)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeTregillis Cynthia LCommon Stock · Direct
112,155Aug 27, 2026
Tan IrvingCommon Stock · Direct
266,647Aug 31, 2026
Davis Brian ScottCommon Stock · Direct
102,965Aug 26, 2026
Gubbi Vidyadhara KCommon Stock · Direct
86,172Aug 26, 2026
Davis Brian ScottDividend Equivalent Rights · Direct
164.317Aug 26, 2026
Gubbi Vidyadhara KDividend Equivalent Rights · Direct
208.241Aug 26, 2026
Tan IrvingDividend Equivalent Rights · Direct
773.9385Aug 26, 2026
Tregillis Cynthia LDividend Equivalent Rights · Direct
277.5402Aug 26, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 03 → Sep 03
LessMore
Top insiders
By absolute net value across the selected period- TL-$1.1M
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
WDC transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| WDC | Tregillis Cynthia L | CLOCS | exercise10b5-1 | 11 | $0 | M | +1.8% | 08/24 | 08/21 | |
| WDC | Tregillis Cynthia L | CLOCS | exercise10b5-1 | 4 | $0 | M | +1.8% | 08/24 | 08/20 | |
| WDC | Tregillis Cynthia L | CLOCS | sale10b5-1 | 684 | -$30.5M | S | +1.8% | 08/24 | 08/24 | |
| WDC | Tregillis Cynthia L | CLOCS | withholding10b5-1 | 1.10k | -$50.9M | F | +1.8% | 08/24 | 08/21 | |
| WDC | Tregillis Cynthia L | CLOCS | exercise10b5-1 | 11 | $0 | M | +1.8% | 08/24 | 08/21 | |
| WDC | Tregillis Cynthia L | CLOCS | sale10b5-1 | 235 | -$11.2M | S | +1.8% | 08/24 | 08/21 | |
| WDC | Tregillis Cynthia L | CLOCS | withholding10b5-1 | 379 | -$17.7M | F | +1.8% | 08/24 | 08/20 | |
| WDC | Tregillis Cynthia L | CLOCS | exercise10b5-1 | 3 | $0 | M | +1.8% | 08/24 | 08/20 |
WESTERN DIGITAL CORP Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at WESTERN DIGITAL CORP?
Tan Irving, STREETER STEPHANIE A, Tregillis Cynthia L, Shihab Ahmed Mohammed, Sennesael Kris, Gubbi Vidyadhara K, Feller Brad, Davis Brian Scott.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Streeter Stephanie A reported a sale on Sep 01, 2026 valued at $72.8M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $3,632,898.53. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.