Transaction · 0001266824-26-000174

Tregillis Cynthia L

Tregillis Cynthia L, CLO, CS, reported a transaction classified as exercise at WESTERN DIGITAL CORP involving 3.833700 shares for an estimated $0.00. Reported holdings after the transaction were 305.970300 shares. The stored filing text includes a detected 10b5-1 reference.

exerciseSEC transaction code MCLO, CS
WDCWESTERN DIGITAL CORP
Trade date
Aug 20, 2026
Filing date
Aug 24, 2026
View on SEC Insider profile
Estimated value$0Shares × reported price
Shares traded4$0.00 per share
Holdings after306Direct
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Not calculated for derivative securities.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

WDC price since this filing

Daily closing prices, with the filing date and available return windows
WDC · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago +26.0%1w ago +11.9%1d ago +6.1%
Returns since7d +3.5%30d +8.8%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0001266824-26-000174
Dividend Equivalent Rights
Transaction date
Aug 20, 2026
Filed Aug 24, 2026, 11:00 PM · 4d delay
Shares
3.8337 sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
305.9703 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Derivative Transaction Direct Ownership 10b5-1 Detected
Filing-only score

-20 points

Compact filing score computed from stored Form 4 facts. Version v1.

Low filing signal

This filing has a meaningfully negative filing-only score. It is likely less useful as a positive insider-activity signal.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • derivative_transaction-16 points

    is_derivative = true

    Derivative exercise rows are less discretionary than open-market purchases.
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Legal Officer & Corp Sec

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to whic…

  2. F2

    Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

  3. F3

    The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 6, 2026.

Original filing · 0001266824-26-000174
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