Insider · CIK 0001456385
Gene M. Zamiska
Files at WDC (WESTERN DIGITAL CORP). First filing Oct 28, 2024, latest Aug 28, 2025.
In brief
Gene M. Zamiska files SEC Form 4 as officer at WDC (WESTERN DIGITAL CORP). Since Oct 28, 2024, Gene M. Zamiska has reported 0 open-market buys worth $0 and 9 open-market sells worth $810k, the latest filed on Aug 28, 2025.
A track record needs three past buys with six months of prices behind them; Gene M. Zamiska has 0, so none is measured yet.
The newest scored trade: sold $29k of WDC on Aug 28, 2025, filed Aug 28, 2025, scored 0 (weak), under a 10b5-1 plan.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
WDC: WESTERN DIGITAL CORP
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 0Weak | WESTERN DIGITAL CORP | $29k 353 shares | -1% | +169% from low0% from high | |
| 3Weak | WESTERN DIGITAL CORP | $64k 814 shares | -3% | +161% from low0% from high | |
| 16Weak | WESTERN DIGITAL CORP | $376k 4,988 shares | -14% | +145% from low-5% from high | |
| 0Weak | WESTERN DIGITAL CORP | $14k 245 shares | -1% | +92% from low0% from high | |
| 5Weak | WESTERN DIGITAL CORP | $95k 1,729 shares | -4% | +81% from low-1% from high | |
| 0Weak | WESTERN DIGITAL CORP | $23k 313 shares | -1% | - | |
| 1Weak | WESTERN DIGITAL CORP | $46k 658 shares | -2% | - | |
| 0Weak | WESTERN DIGITAL CORP | $24k 376 shares | -1% | - | |
| 41Moderate | WESTERN DIGITAL CORP | $139k 1,993 shares | -6% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Nov 26, 2025 | WDC WESTERN DIGITAL CORPORATION | 814 0.00% of outstanding | $128k | Nov 26, 2025 | $159k |
| Nov 24, 2025 | WDC WESTERN DIGITAL CORPORATION | 458 0.00% of outstanding | $65k | Nov 24, 2025 | $158k |
| Nov 21, 2025 | WDC WESTERN DIGITAL CORPORATION | 468 0.00% of outstanding | $65k | Nov 21, 2025 | $230k |
| Aug 28, 2025 | WDC WESTERN DIGITAL CORPORATION | 353 0.00% of outstanding | $29k | Aug 28, 2025 | $549k |
| Aug 26, 2025 | WDC WESTERN DIGITAL CORPORATION | 814 0.00% of outstanding | $64k | Aug 26, 2025 | $485k |
| Aug 22, 2025 | WDC WESTERN DIGITAL CORPORATION | 1,828 0.00% of outstanding | $137k | Aug 22, 2025 | $348k |
| Aug 21, 2025 | WDC WESTERN DIGITAL CORPORATION | 3,160 0.00% of outstanding | $239k | Aug 21, 2025 | $109k |
| Jun 17, 2025 | WDC WESTERN DIGITAL CORPORATION | 245 0.00% of outstanding | $14k | Jun 17, 2025 | $95k |
| Jun 5, 2025 | WDC WESTERN DIGITAL CORPORATION | 1,729 0.00% of outstanding | $95k | Jun 5, 2025 | $88k |
| Mar 12, 2025 | WDC WESTERN DIGITAL CORPORATION | 456 0.00% of outstanding | $20k | Mar 12, 2025 | $69k |
| Mar 7, 2025 | WDC WESTERN DIGITAL CORPORATION | 1,659 0.00% of outstanding | $69k | Mar 7, 2025 | none |
| Nov 29, 2024 | WDC WESTERN DIGITAL CORPORATION | 313 0.00% of outstanding | $23k | Nov 29, 2024 | $344k |
| Nov 26, 2024 | WDC WESTERN DIGITAL CORPORATION | 658 0.00% of outstanding | $46k | Nov 26, 2024 | $496k |
| Nov 21, 2024 | WDC WESTERN DIGITAL CORPORATION | 376 0.00% of outstanding | $24k | Nov 21, 2024 | $472k |
| Oct 28, 2024 | WDC WESTERN DIGITAL CORP | 1,993 0.00% of outstanding | $139k | Oct 28, 2024 | $360k |
Transactions
Every row this insider has filed, 31 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 18, 2025 | WDC WESTERN DIGITAL CORP | AGrant or award Dividend Equivalent Rightsderivative | +26 | $0.00 | $0 | 72 | Sep 22, 2025 |
| Aug 27, 2025 | WDC WESTERN DIGITAL CORP | MOption exercise Common Stock10b5-1 | +1 | $0.00 | $0 | 28,123 | Aug 28, 2025 |
| Aug 27, 2025 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock10b5-1 | -345 | $80.67 | $28k | 27,778 | Aug 28, 2025 |
| Aug 28, 2025 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock10b5-1 | -353 | $80.90 | $29k | 27,425 | Aug 28, 2025 |
| Aug 27, 2025 | WDC WESTERN DIGITAL CORP | MOption exercise Dividend Equivalent Rightsderivative10b5-1 | -1 | $0.00 | $0 | 46 | Aug 28, 2025 |
| Aug 25, 2025 | WDC WESTERN DIGITAL CORP | MOption exercise Common Stock10b5-1 | +2 | $0.00 | $0 | 29,734 | Aug 27, 2025 |
| Aug 25, 2025 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock10b5-1 | -798 | $79.22 | $63k | 28,936 | Aug 27, 2025 |
| Aug 26, 2025 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock10b5-1 | -814 | $79.10 | $64k | 28,122 | Aug 27, 2025 |
| Aug 25, 2025 | WDC WESTERN DIGITAL CORP | MOption exercise Dividend Equivalent Rightsderivative10b5-1 | -3 | $0.00 | $0 | 48 | Aug 27, 2025 |
| Aug 21, 2025 | WDC WESTERN DIGITAL CORP | MOption exercise Common Stock10b5-1 | +6 | $0.00 | $0 | 36,517 | Aug 25, 2025 |
| Aug 21, 2025 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock10b5-1 | -1,797 | $74.66 | $134k | 34,720 | Aug 25, 2025 |
| Aug 21, 2025 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock10b5-1 | -3,160 | $75.68 | $239k | 31,560 | Aug 25, 2025 |
| Aug 22, 2025 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock10b5-1 | -1,828 | $74.78 | $137k | 29,732 | Aug 25, 2025 |
| Aug 21, 2025 | WDC WESTERN DIGITAL CORP | MOption exercise Dividend Equivalent Rightsderivative10b5-1 | -6 | $0.00 | $0 | 50 | Aug 25, 2025 |
| Aug 20, 2025 | WDC WESTERN DIGITAL CORP | MOption exercise Common Stock | +9 | $0.00 | $0 | 39,613 | Aug 21, 2025 |
| Aug 20, 2025 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock | -3,102 | $75.64 | $235k | 36,511 | Aug 21, 2025 |
| Aug 20, 2025 | WDC WESTERN DIGITAL CORP | MOption exercise Dividend Equivalent Rightsderivative | -11 | $0.00 | $0 | 56 | Aug 21, 2025 |
| Jun 18, 2025 | WDC WESTERN DIGITAL CORP | AGrant or award Dividend Equivalent Rightsderivative | +67 | $0.00 | $0 | 67 | Jun 23, 2025 |
| Jun 14, 2025 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock10b5-1 | -240 | $55.70 | $13k | 39,849 | Jun 17, 2025 |
| Jun 17, 2025 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock10b5-1 | -245 | $58.01 | $14k | 39,604 | Jun 17, 2025 |
| Jun 5, 2025 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock10b5-1 | -1,729 | $54.88 | $95k | 40,089 | Jun 6, 2025 |
| May 25, 2025 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock | -797 | $50.18 | $40k | 42,163 | May 28, 2025 |
| May 27, 2025 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock | -345 | $51.82 | $18k | 41,818 | May 28, 2025 |
| May 20, 2025 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock | -360 | $50.63 | $18k | 42,960 | May 22, 2025 |
| Nov 27, 2024 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock10b5-1 | -167 | $71.50 | $12k | 28,696 | Dec 2, 2024 |
| Nov 29, 2024 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock10b5-1 | -313 | $72.63 | $23k | 28,383 | Dec 2, 2024 |
| Nov 25, 2024 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock10b5-1 | -450 | $69.43 | $31k | 29,521 | Nov 26, 2024 |
| Nov 26, 2024 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock10b5-1 | -658 | $69.99 | $46k | 28,863 | Nov 26, 2024 |
| Nov 20, 2024 | WDC WESTERN DIGITAL CORP | FTax withholding Common Stock10b5-1 | -261 | $63.84 | $17k | 30,347 | Nov 22, 2024 |
| Nov 21, 2024 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock10b5-1 | -376 | $64.47 | $24k | 29,971 | Nov 22, 2024 |
| Oct 28, 2024 | WDC WESTERN DIGITAL CORP | SOpen-market sale Common Stock | -1,993 | $69.94 | $139k | 30,608 | Oct 28, 2024 |
Questions about Gene M. Zamiska
Answered from the filings on this page, as of the latest one.
Is Gene M. Zamiska buying or selling?
Not in the last 12 months. Gene M. Zamiska's latest open-market trade on SEC Form 4 was sold $29k of WDC on Aug 28, 2025.
How did Gene M. Zamiska's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Gene M. Zamiska has 0.
Where does Gene M. Zamiska file Form 4?
Gene M. Zamiska has filed Form 4 at WDC (WESTERN DIGITAL CORP) as SVP & Princ. Acctg Officer. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.