Insider trading

Period: 120 months Stock: WDC Plan: Scheduled (10b5-1) × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

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

55 decisions over 120 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.

55 decisions over 120 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.

55 decisions over 120 months
The trade

Minimum amount

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

55 decisions over 120 months
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.
55 decisions over 120 months Remove this filter
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
55 decisions over 120 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.

55 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
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)
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)
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)
21 May 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$48.64K 106 at 458.87
0.1%
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)
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)
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)
26 Feb 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$61.23K 214 at 286.11
0.2%
Planned (10b5-1)
24 Feb 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$86.76K 308 at 281.70
0.2%
Planned (10b5-1)
23 Feb 2026
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$36.90K 130 at 283.83
0.1%
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)
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)
1 Dec 2025
Cole Martin I Director
Sold on a plan 8×
$975.70K 6,000 at 162.62
14.5%
Planned (10b5-1)
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)
28 Aug 2025
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$28.56K 353 at 80.90
1.3%
Planned (10b5-1)
26 Aug 2025
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$64.39K 814 at 79.10
2.8%
Planned (10b5-1)
22 Aug 2025
Tregillis Cynthia L Chief Legal Officer & Corp Sec
Sold on a plan
$1.05M 14,067 at 74.78
9.4%
Planned (10b5-1)
22 Aug 2025
Zamiska Gene M. SVP, Global Accounting & Chief
Sold on a plan
$136.70K 1,828 at 74.78
5.8%
Planned (10b5-1)
21 Aug 2025
Zamiska Gene M. SVP, Global Accounting & Chief
Sold on a plan
$239.15K 3,160 at 75.68
9.1%
Planned (10b5-1)
19 Aug 2025
Tan Irving Chief Executive Officer
Sold on a plan
$654.33K 8,621 at 75.90
1.4%
Planned (10b5-1)
17 Jun 2025
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$14.21K 245 at 58.01
0.6%
Planned (10b5-1)
5 Jun 2025
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$94.89K 1,729 at 54.88
4.1%
Planned (10b5-1)
13 May 2025
Tan Irving Chief Executive Officer
Sold on a plan
$548.35K 11,379 at 48.19
1.8%
Planned (10b5-1)
12 Mar 2025
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$19.78K 456 at 43.37
1.0%
Planned (10b5-1)
7 Mar 2025
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$68.62K 1,659 at 41.36
3.7%
Planned (10b5-1)
29 Nov 2024
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$22.73K 313 at 72.63
1.1%
Planned (10b5-1)
26 Nov 2024
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$46.05K 658 at 69.99
2.2%
Planned (10b5-1)
21 Nov 2024
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$24.24K 376 at 64.47
1.2%
Planned (10b5-1)
25 Oct 2024
Goeckeler David Chief Executive Officer
Sold on a plan
$5.44M 75,000 at 72.59
8.4%
Planned (10b5-1)
26 Sep 2024
Goeckeler David Chief Executive Officer
Sold on a plan
$5.27M 75,000 at 70.32
7.7%
Planned (10b5-1)
4 Sep 2024
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$134.39K 2,169 at 61.96
6.2%
Planned (10b5-1)
29 Aug 2024
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$19.95K 315 at 63.32
0.9%
Planned (10b5-1)
27 Aug 2024
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$178.29K 2,900 at 61.48
7.2%
Planned (10b5-1)
21 Aug 2024
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$27.06K 417 at 64.89
1.4%
Planned (10b5-1)
17 Jun 2024
Zamiska Gene M. SVP, Global Accounting & Chief
Sold on a plan
$17.08K 219 at 78.00
0.7%
Planned (10b5-1)
21 May 2024
Zamiska Gene M. SVP & Princ. Acctg Officer
Sold on a plan
$29.90K 416 at 71.88
1.4%
Planned (10b5-1)
Showing 1–50 of 55. Page 1 of 2 Older →