Insider trading

Period: 12 months Stock: WDC Minimum amount: $100K × + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

39 decisions over 12 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

39 decisions over 12 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

39 decisions over 12 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

39 decisions over 12 months Remove this filter
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
39 decisions over 12 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
39 decisions over 12 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

39 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
4 Sep 2026
Gubbi Vidyadhara K Chief of Global Operations
Sold at will
$825.47K 1,795 at 459.87
2.2%
Not planned
4 Sep 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$194.92K 432 at 451.20
0.4%
Planned (10b5-1)
1 Sep 2026
STREETER STEPHANIE A Director · indirect
Sold at will
$728.00K 1,600 at 455.00
4.4%
Not planned
31 Aug 2026
STREETER STEPHANIE A Director · indirect
Sold at will 2×
$1.79M 4,000 at 447.82
9.9%
Not planned
27 Aug 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$481.71K 1,007 at 478.36
0.9%
Planned (10b5-1)
26 Aug 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$214.57K 476 at 450.78
0.4%
Planned (10b5-1)
24 Aug 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$305.18K 684 at 446.17
0.6%
Planned (10b5-1)
21 Aug 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$112.16K 235 at 477.27
0.2%
Planned (10b5-1)
11 Aug 2026
Tan Irving Chief Executive Officer
Sold on a plan 7×
$8.90M 20,000 at 444.97
3.4%
Planned (10b5-1)
28 Jul 2026
Cole Martin I Director
Sold on a plan 32×
$1.80M 4,000 at 449.34
15.7%
Planned (10b5-1)
21 Jul 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$427.94K 808 at 529.63
0.7%
Planned (10b5-1)
9 Jun 2026
Cole Martin I Director
Sold on a plan 44×
$2.06M 4,000 at 515.63
13.6%
Planned (10b5-1)
5 Jun 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$235.70K 432 at 545.60
0.4%
Planned (10b5-1)
1 Jun 2026
Gubbi Vidyadhara K Chief of Global Operations
Sold at will
$1.38M 2,475 at 556.24
2.8%
Not planned
28 May 2026
KIDDOO BRUCE E Director
Sold at will
$396.39K 750 at 528.52
16.1%
Not planned
27 May 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$115.48K 214 at 539.63
0.2%
Planned (10b5-1)
22 May 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$150.49K 308 at 488.61
0.3%
Planned (10b5-1)
11 May 2026
Davis Brian Scott Chief Sales & Mrktng Officer
Sold on a plan 18×
$5.01M 10,000 at 500.69
8.7%
Planned (10b5-1)
4 May 2026
Gubbi Vidyadhara K Chief of Global Operations
Sold at will
$2.07M 4,674 at 443.19
4.9%
Not planned
1 May 2026
Tan Irving Chief Executive Officer
Sold on a plan 9×
$8.24M 20,000 at 411.84
3.2%
Planned (10b5-1)
21 Apr 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$136.88K 363 at 377.09
0.3%
Planned (10b5-1)
6 Mar 2026
Gubbi Vidyadhara K Chief of Global Operations
Sold at will
$2.17M 8,518 at 255.33
7.9%
Not planned
4 Mar 2026
Gubbi Vidyadhara K Chief of Global Operations
Sold at will 2×
$2.74M 10,148 at 270.31
8.6%
Not planned
4 Mar 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan 2×
$2.50M 9,324 at 268.27
7.1%
Planned (10b5-1)
2 Mar 2026
Cole Martin I Director
Sold on a plan 14×
$1.63M 6,000 at 271.67
16.9%
Planned (10b5-1)
17 Feb 2026
Davis Brian Scott Chief Sales & Mrktng Officer
Sold on a plan 12×
$2.79M 10,000 at 279.16
7.6%
Planned (10b5-1)
6 Feb 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold at will
$1.83M 6,780 at 270.49
4.7%
Not planned
5 Feb 2026
MASSENGILL MATTHEW E Director · indirect
Sold on a plan 11×
$9.62M 36,926 at 260.43
100%
Sold half or more
2 Feb 2026
Tan Irving Chief Executive Officer
Sold on a plan 17×
$5.11M 20,000 at 255.44
3.1%
Planned (10b5-1)
21 Jan 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$102.36K 447 at 229.00
0.3%
Planned (10b5-1)
5 Dec 2025
Gubbi Vidyadhara K Chief of Global Operations
Sold at will 2×
$1.50M 8,943 at 168.14
6.6%
Not planned
4 Dec 2025
Gubbi Vidyadhara K Chief of Global Operations
Sold at will
$2.22M 13,877 at 159.94
9.3%
Not planned
4 Dec 2025
Alexy Kimberly Director
Sold at will
$320.16K 2,000 at 160.08
55.8%
Sold half or more
2 Dec 2025
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold at will
$449.75K 2,801 at 160.57
1.9%
Not planned
1 Dec 2025
Cole Martin I Director
Sold on a plan 8×
$975.70K 6,000 at 162.62
14.5%
Planned (10b5-1)
25 Nov 2025
Oulman Roxanne Director
Sold at will
$277.96K 1,800 at 154.42
31.8%
Not planned
25 Nov 2025
Alexy Kimberly Director
Sold at will
$272.27K 1,768 at 154.00
33.0%
Not planned
5 Nov 2025
Cole Martin I Director
Sold on a plan 11×
$1.61M 10,000 at 161.32
20.2%
Planned (10b5-1)
3 Nov 2025
Tan Irving Chief Executive Officer
Sold on a plan 6×
$3.01M 20,000 at 150.69
3.0%
Planned (10b5-1)
Showing 1–39 of 39.