Insider trading

Period: 120 months Stock: STX Role: Directors × + Add filter Clear all
Views & alerts

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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.

126 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.

126 decisions over 120 months Remove this filter
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.

126 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.

126 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.
126 decisions over 120 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
126 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.

126 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
1 Sep 2026
Sold on a plan
$611.33K 750 at 815.11
18.3%
Planned (10b5-1)
4 Jun 2026
Sold at will
$927.68K 1,000 at 927.68
13.1%
Not planned
2 Jun 2026
BHATT PRAT Director
Sold on a plan
$929.88K 1,000 at 929.88
7.2%
Planned (10b5-1)
1 Jun 2026
Sold on a plan
$664.00K 750 at 885.33
15.5%
Planned (10b5-1)
5 May 2026
Sold at will 2×
$1.21M 1,580 at 766.61
12.9%
Not planned
2 Mar 2026
Sold on a plan
$295.19K 750 at 393.59
13.4%
Planned (10b5-1)
30 Jan 2026
Geldmacher Jay L Director
Sold at will
$414.42K 925 at 448.03
80.6%
Sold half or more
2 Dec 2025
Sold on a plan
$204.68K 750 at 272.91
11.8%
Planned (10b5-1)
10 Nov 2025
Sold at will
$1.47M 5,000 at 294.57
39.6%
Not planned
3 Nov 2025
Sold at will
$545.08K 2,046 at 266.41
14.3%
Not planned
31 Oct 2025
Geldmacher Jay L Director
Sold at will
$336.38K 1,250 at 269.10
52.1%
Sold half or more
2 Sep 2025
Sold on a plan 3×
$126.60K 750 at 168.80
14.8%
Planned (10b5-1)
6 Aug 2025
Geldmacher Jay L Director
Sold at will
$376.25K 2,500 at 150.50
87.7%
Sold half or more
5 Jun 2025
Sold at will
$344.80K 2,693 at 128.04
18.0%
Not planned
2 Jun 2025
CANNON MICHAEL R Director
Sold at will
$2.88M 24,190 at 119.00
69.1%
Sold half or more
2 Jun 2025
Sold on a plan
$87.76K 750 at 117.01
12.9%
Planned (10b5-1)
22 May 2025
BRUNER JUDY Director · indirect
Sold at will
$1.14M 10,446 at 108.71
46.0%
Not planned
3 Mar 2025
Sold on a plan
$77.21K 750 at 102.95
11.4%
Planned (10b5-1)
2 Dec 2024
Sold on a plan
$76.37K 750 at 101.82
10.3%
Planned (10b5-1)
24 Oct 2024
Geldmacher Jay L Director
Sold at will
$423.53K 4,100 at 103.30
59.0%
Sold half or more
4 Sep 2024
Sold on a plan
$72.08K 750 at 96.10
19.8%
Planned (10b5-1)
7 Feb 2024
Geldmacher Jay L Director
Sold at will
$391.50K 4,500 at 87.00
62.7%
Sold half or more
23 Oct 2023
ZANDER EDWARD J Director
Sold at will
$89.39K 1,370 at 65.25
100%
Sold half or more
4 Mar 2022
LUCZO STEPHEN J Director · indirect
Sold, plan not stated
$5.16M 50,000 at 103.26
18.1%
22 Feb 2022
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated
$29.41M 272,297 at 108.01
2.0%
18 Feb 2022
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated
$3.02M 27,703 at 109.06
0.2%
17 Feb 2022
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated
$189.00M 1,750,000 at 108.00
11.3%
31 Jan 2022
Geldmacher Jay L Director
Sold, plan not stated
$462.25K 4,300 at 107.50
61.2%
Sold half or more
10 Dec 2021
Sold, plan not stated
$1.43M 14,000 at 102.04
69.3%
Sold half or more
10 Dec 2021
Adams Mark Director · indirect
Sold, plan not stated 2×
$721.86K 7,000 at 103.12
36.3%
15 Nov 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated
$31.88M 300,000 at 106.26
1.9%
12 Nov 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated
$85.76M 775,000 at 110.66
4.7%
11 Nov 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated
$85.89M 815,000 at 105.39
4.7%
10 Jun 2021
ZANDER EDWARD J Director · indirect
Sold, plan not stated
$1.18M 12,043 at 97.58
24.3%
10 Jun 2021
CANNON MICHAEL R Director
Sold, plan not stated
$692.27K 7,102 at 97.48
26.0%
3 May 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 4×
$495.01M 5,500,000 at 90.00
100%
Sold half or more
30 Apr 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$12.88M 134,153 at 96.04
4.2%
26 Apr 2021
LUCZO STEPHEN J Director · indirect
Sold, plan not stated
$9.21M 100,000 at 92.13
25.2%
12 Mar 2021
LUCZO STEPHEN J Director
Sold, plan not stated
$14.90M 194,384 at 76.68
100%
Sold half or more
12 Mar 2021
LUCZO STEPHEN J Director · indirect
Sold, plan not stated
$3.83M 50,000 at 76.65
11.2%
11 Mar 2021
Sold, plan not stated
$541.66K 7,000 at 77.38
29.8%
8 Mar 2021
LUCZO STEPHEN J Director
Sold, plan not stated
$9.50M 127,600 at 74.47
100%
Sold half or more
4 Mar 2021
LUCZO STEPHEN J Director · indirect
Sold, plan not stated
$5.40M 75,000 at 71.95
14.4%
3 Mar 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$338.29M 4,650,000 at 72.75
60.0%
Sold half or more
26 Feb 2021
Geldmacher Jay L Director
Sold, plan not stated
$559.13K 7,500 at 74.55
69.6%
Sold half or more
15 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$522.80K 8,706 at 60.05
0.2%
14 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$33.86M 561,557 at 60.30
13.1%
13 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$7.97M 132,771 at 60.01
3.4%
8 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$2.39M 39,559 at 60.35
1.0%
7 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$34.83M 578,132 at 60.24
13.1%
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