Insider trading

Period: 120 months Stock: STX Minimum amount: $10M × + 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.

49 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.

49 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.

49 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.

49 decisions over 120 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.
49 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
49 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.

49 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
1 Oct 2026
Sold on a plan 44×
$27.67M 30,000 at 922.35
7.7%
Planned (10b5-1)
15 Sep 2026
Sold at will
$75.58M 97,889 at 772.14
20.6%
Not planned
15 Sep 2026
Teh Ban Seng EVP & Chief Commercial Officer
Sold on a plan 24×
$41.24M 52,730 at 782.08
90.1%
Sold half or more
15 Sep 2026
Romano Gianluca EVP & CFO
Sold at will
$38.60M 49,984 at 772.16
41.4%
Not planned
15 Sep 2026
Sold at will
$11.94M 15,466 at 772.15
33.2%
Not planned
11 Sep 2026
Romano Gianluca EVP & CFO
Sold on a plan 38×
$42.03M 50,498 at 832.25
63.0%
Sold half or more
1 Sep 2026
Sold on a plan 26×
$24.49M 30,000 at 816.28
9.2%
Planned (10b5-1)
21 Aug 2026
Sold at will 3×
$15.41M 18,139 at 849.35
5.7%
Not planned
7 Aug 2026
Romano Gianluca EVP & CFO
Sold on a plan 65×
$17.83M 22,211 at 802.94
51.8%
Sold half or more
3 Aug 2026
Sold on a plan 48×
$24.51M 30,000 at 817.04
9.2%
Planned (10b5-1)
1 Jul 2026
Sold on a plan 44×
$27.44M 30,000 at 914.82
8.8%
Planned (10b5-1)
1 Jun 2026
Sold on a plan 49×
$27.35M 30,000 at 911.59
8.5%
Planned (10b5-1)
20 May 2026
Sold on a plan 19×
$22.54M 30,000 at 751.29
8.1%
Planned (10b5-1)
6 May 2026
Romano Gianluca EVP & CFO
Sold on a plan 30×
$17.41M 22,488 at 774.22
34.4%
Planned (10b5-1)
19 Mar 2026
Sold at will
$10.00M 24,584 at 406.77
6.1%
Not planned
12 Nov 2025
Romano Gianluca EVP & CFO
Sold on a plan 17×
$15.40M 54,021 at 285.16
49.0%
Planned (10b5-1)
26 Sep 2024
MOSLEY WILLIAM D Chief Executive Officer
Sold on a plan
$15.62M 141,785 at 110.18
17.5%
Planned (10b5-1)
8 Dec 2023
MOSLEY WILLIAM D Chief Executive Officer
Sold on a plan
$12.29M 153,188 at 80.21
18.6%
Planned (10b5-1)
31 Aug 2023
MOSLEY WILLIAM D Chief Executive Officer
Sold on a plan 4×
$14.06M 200,000 at 70.28
24.5%
Planned (10b5-1)
22 Feb 2022
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated
$29.41M 272,297 at 108.01
2.0%
17 Feb 2022
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated
$189.00M 1,750,000 at 108.00
11.3%
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%
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%
12 Mar 2021
LUCZO STEPHEN J Director
Sold, plan not stated
$14.90M 194,384 at 76.68
100%
Sold half or more
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
14 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$33.86M 561,557 at 60.30
13.1%
7 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$34.83M 578,132 at 60.24
13.1%
6 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$21.50M 356,572 at 60.31
8.4%
5 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$31.18M 516,440 at 60.37
11.5%
4 Jan 2021
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$17.75M 291,713 at 60.85
6.8%
31 Dec 2020
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$41.77M 680,016 at 61.42
14.3%
30 Dec 2020
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$24.26M 398,502 at 60.88
8.7%
29 Dec 2020
ValueAct Holdings, L.P. Director · indirect
Sold, plan not stated 2×
$20.54M 336,032 at 61.12
7.4%
8 Feb 2019
ValueAct Holdings, L.P. Director · indirect
Bought
$32.34M 725,000 at 44.60
48.3%
First buy on file
7 Feb 2019
ValueAct Holdings, L.P. Director · indirect
Bought
$33.32M 750,000 at 44.42
100%
First buy on file
6 Feb 2019
ValueAct Holdings, L.P. Director · indirect
Bought
$34.26M 750,000 at 45.68
opened
First buy on file
7 Dec 2018
ValueAct Holdings, L.P. Director · indirect
Bought
$10.96M 271,131 at 40.44
1.0%
First buy on file
20 Nov 2018
ValueAct Holdings, L.P. Director · indirect
Bought
$15.30M 365,671 at 41.84
1.4%
First buy on file
15 Aug 2018
ValueAct Holdings, L.P. Director · indirect
Bought
$26.39M 500,000 at 52.78
1.9%
First buy on file
14 Aug 2018
ValueAct Holdings, L.P. Director · indirect
Bought
$13.20M 250,000 at 52.78
1.0%
First buy on file
13 Aug 2018
ValueAct Holdings, L.P. Director · indirect
Bought
$26.04M 509,492 at 51.11
2.0%
First buy on file
10 Aug 2018
ValueAct Holdings, L.P. Director · indirect
Bought
$50.61M 1,000,000 at 50.61
4.2%
First buy on file
9 Aug 2018
ValueAct Holdings, L.P. Director · indirect
Bought
$29.86M 581,291 at 51.36
2.5%
First buy on file
1 Aug 2018
ValueAct Holdings, L.P. Director · indirect
Bought
$16.99M 321,000 at 52.94
1.4%
First buy on file
31 Jul 2018
ValueAct Holdings, L.P. Director · indirect
Bought
$26.33M 500,000 at 52.65
2.2%
First buy on file
30 Jan 2018
LUCZO STEPHEN J Executive Chairman & COB
Sold, plan not stated
$13.24M 241,738 at 54.76
76.9%
Sold half or more
Showing 1–49 of 49.