Cynthia L Tregillis
CIK 2057088 · View on SEC EDGAR ↗
Insider
First SEC filing: March 3, 2025 · Latest: June 5, 2026
On this page
Insider at
Insider transactions
0 buys (P)
15 sells (S)
Net:
$-7,239,418
+ 75 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
75 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| July 21, 2026 | WDC | S 10b5-1 | 808 | $529.63 | $427,941 | 114,539 Direct | -0.70% | Disposed | -11.2% (price as of 2026-08-21) |
| June 5, 2026 | WDC | S 10b5-1 | 432 | $545.60 | $235,699 | 116,643 Direct | -0.37% | Disposed | -13.8% (price as of 2026-08-21) |
| May 27, 2026 | WDC | S 10b5-1 | 214 | $539.63 | $115,481 | 117,157 Direct | -0.18% | Disposed | -12.8% (price as of 2026-08-21) |
| May 22, 2026 | WDC | S 10b5-1 | 308 | $488.61 | $150,492 | 118,135 Direct | -0.26% | Disposed | -3.7% (price as of 2026-08-21) |
| May 21, 2026 | WDC | S 10b5-1 | 106 | $458.87 | $48,640 | 118,443 Direct | -0.09% | Disposed | 2.5% (price as of 2026-08-21) |
| April 21, 2026 | WDC | S 10b5-1 | 363 | $377.09 | $136,884 | 120,023 Direct | -0.30% | Disposed | 24.8% (price as of 2026-08-21) |
| March 4, 2026 | WDC | S 10b5-1 | 777 | $257.91 | $200,396 | 130,229 Direct | -0.59% | Disposed | 82.4% (price as of 2026-08-21) |
| March 4, 2026 | WDC | S 10b5-1 | 8,547 | $269.22 | $2,301,023 | 121,682 Direct | -6.56% | Disposed | 74.8% (price as of 2026-08-21) |
| Feb. 26, 2026 | WDC | S 10b5-1 | 214 | $286.11 | $61,228 | 133,781 Direct | -0.16% | Disposed | 64.4% (price as of 2026-08-21) |
| Feb. 24, 2026 | WDC | S 10b5-1 | 308 | $281.70 | $86,764 | 134,759 Direct | -0.23% | Disposed | 67.0% (price as of 2026-08-21) |
| Feb. 23, 2026 | WDC | S 10b5-1 | 130 | $283.83 | $36,898 | 135,067 Direct | -0.10% | Disposed | 65.8% (price as of 2026-08-21) |
| Feb. 6, 2026 | WDC | S | 6,780 | $270.49 | $1,833,922 | 136,538 Direct | -4.73% | Disposed | 73.9% (price as of 2026-08-21) |
| Jan. 21, 2026 | WDC | S 10b5-1 | 447 | $229.00 | $102,363 | 143,318 Direct | -0.31% | Disposed | 105.5% (price as of 2026-08-21) |
| Dec. 2, 2025 | WDC | S | 2,801 | $160.57 | $449,757 | 144,596 Direct | -1.90% | Disposed | 193.0% (price as of 2026-08-21) |
| Aug. 22, 2025 | WDC | S 10b5-1 | 14,067 | $74.78 | $1,051,930 | 135,351 Direct | -9.41% | Disposed | 529.2% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| July 20, 2026 | WDC | Dividend Equivalent Rights | Common Stock (13) | — | — | 13 | Disposed |
| June 17, 2026 | WDC | Dividend Equivalent Rights | Common Stock (19) | — | — | 19 | Acquired |
| June 3, 2026 | WDC | Dividend Equivalent Rights | Common Stock (7) | — | — | 7 | Disposed |
| May 25, 2026 | WDC | Dividend Equivalent Rights | Common Stock (7) | — | — | 7 | Disposed |
| May 21, 2026 | WDC | Dividend Equivalent Rights | Common Stock (11) | — | — | 11 | Disposed |
| May 20, 2026 | WDC | Dividend Equivalent Rights | Common Stock (4) | — | — | 4 | Disposed |
| April 20, 2026 | WDC | Dividend Equivalent Rights | Common Stock (12) | — | — | 12 | Disposed |
| March 18, 2026 | WDC | Dividend Equivalent Rights | Common Stock (41) | — | — | 41 | Acquired |
| March 3, 2026 | WDC | Dividend Equivalent Rights | Common Stock (24) | — | — | 24 | Disposed |
| Feb. 25, 2026 | WDC | Dividend Equivalent Rights | Common Stock (7) | — | — | 7 | Disposed |
| Feb. 21, 2026 | WDC | Dividend Equivalent Rights | Common Stock (9) | — | — | 9 | Disposed |
| Feb. 20, 2026 | WDC | Dividend Equivalent Rights | Common Stock (3) | — | — | 3 | Disposed |
| Jan. 20, 2026 | WDC | Dividend Equivalent Rights | Common Stock (11) | — | — | 11 | Disposed |
| Dec. 18, 2025 | WDC | Dividend Equivalent Rights | Common Stock (82) | — | — | 82 | Acquired |
| Nov. 25, 2025 | WDC | Dividend Equivalent Rights | Common Stock (5) | — | — | 5 | Disposed |
| Nov. 21, 2025 | WDC | Dividend Equivalent Rights | Common Stock (7) | — | — | 7 | Disposed |
| Nov. 20, 2025 | WDC | Dividend Equivalent Rights | Common Stock (3) | — | — | 3 | Disposed |
| Oct. 20, 2025 | WDC | Dividend Equivalent Rights | Common Stock (9) | — | — | 9 | Disposed |
| Sept. 18, 2025 | WDC | Dividend Equivalent Rights | Common Stock (118) | — | — | 118 | Acquired |
| Aug. 27, 2025 | WDC | Dividend Equivalent Rights | Common Stock (1) | — | — | 1 | Disposed |
| Aug. 25, 2025 | WDC | Dividend Equivalent Rights | Common Stock (3) | — | — | 3 | Disposed |
| Aug. 21, 2025 | WDC | Dividend Equivalent Rights | Common Stock (19) | — | — | 19 | Disposed |
| Aug. 20, 2025 | WDC | Dividend Equivalent Rights | Common Stock (11) | — | — | 11 | Disposed |
| July 20, 2025 | WDC | Dividend Equivalent Rights | Common Stock (6) | — | — | 6 | Disposed |
| June 20, 2025 | WDC | Dividend Equivalent Rights | Common Stock (1) | — | — | 1 | Disposed |
| June 18, 2025 | WDC | Dividend Equivalent Rights | Common Stock (223) | — | — | 223 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 3, 2025 | WDC | Common Stock | 139,850 | Direct |