Insider trading

Period: 120 months Stock: GKOS Role: CFO × + 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.

44 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.

44 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.

44 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.

44 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.
44 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
44 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.

44 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
7 Aug 2026
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$3.60M 20,000 at 180.13
31.3%
Planned (10b5-1)
16 Jul 2026
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$1.60M 10,000 at 160.00
18.6%
Planned (10b5-1)
9 Jul 2026
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$1.55M 10,000 at 155.00
18.6%
Planned (10b5-1)
6 Jul 2026
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$1.50M 10,000 at 150.00
18.6%
Planned (10b5-1)
30 Apr 2026
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$1.40M 10,000 at 140.00
18.6%
Planned (10b5-1)
25 Mar 2026
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$267.32K 2,511 at 106.46
5.6%
Planned (10b5-1)
24 Mar 2026
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$160.07K 1,521 at 105.24
3.2%
Planned (10b5-1)
17 Mar 2026
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$61.97K 625 at 99.15
1.3%
Planned (10b5-1)
25 Nov 2025
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$33.08K 315 at 105.00
0.6%
Planned (10b5-1)
25 Mar 2025
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan 3×
$162.40K 1,520 at 106.84
2.8%
Planned (10b5-1)
10 May 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan 2×
$39.01K 353 at 110.51
0.7%
Planned (10b5-1)
6 May 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$9.92K 90 at 110.26
0.2%
Planned (10b5-1)
2 May 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan 3×
$46.71K 442 at 105.69
0.8%
Planned (10b5-1)
8 Apr 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan 2×
$137.94K 1,372 at 100.54
2.5%
Planned (10b5-1)
5 Apr 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan 3×
$25.32K 262 at 96.63
0.5%
Planned (10b5-1)
4 Apr 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan 2×
$41.37K 434 at 95.33
0.8%
Planned (10b5-1)
3 Apr 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$29.90K 316 at 94.62
0.6%
Planned (10b5-1)
2 Apr 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan 5×
$42.84K 474 at 90.37
0.9%
Planned (10b5-1)
8 Feb 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan 2×
$52.68K 550 at 95.78
1.0%
Planned (10b5-1)
7 Feb 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$3.14K 33 at 95.00
0.1%
Planned (10b5-1)
18 Jan 2024
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan 2×
$52.78K 583 at 90.54
1.1%
Planned (10b5-1)
21 Dec 2023
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold on a plan
$49.64K 583 at 85.14
1.0%
Planned (10b5-1)
15 Dec 2023
Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER
Sold at will
$101.35K 1,270 at 79.80
2.2%
Not planned
6 May 2021
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated 4×
$411.09K 5,000 at 82.22
11.9%
3 May 2021
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated 3×
$1.87M 20,000 at 93.53
27.5%
15 Mar 2021
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$439.40K 5,000 at 87.88
10.5%
9 Feb 2021
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated 2×
$1.33M 13,750 at 96.58
24.3%
12 Feb 2020
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$256.88K 3,750 at 68.50
7.3%
30 Sep 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$276.70K 4,631 at 59.75
8.9%
12 Sep 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$183.13K 2,500 at 73.25
5.0%
10 Sep 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$256.88K 3,750 at 68.50
7.3%
26 Aug 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$273.97K 4,631 at 59.16
8.9%
22 Jul 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated 4×
$780.14K 10,346 at 75.41
17.9%
17 Jun 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated 4×
$649.39K 8,750 at 74.22
15.7%
12 Jun 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$183.13K 2,500 at 73.25
5.0%
16 May 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$249.82K 3,647 at 68.50
7.2%
13 May 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated 2×
$169.56K 2,603 at 65.14
5.2%
19 Feb 2019
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$350.15K 5,000 at 70.03
6.2%
28 Nov 2018
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$300.15K 5,000 at 60.03
5.5%
26 Nov 2018
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated
$122.58K 2,100 at 58.37
2.3%
22 Nov 2017
Gilliam Joseph E CFO, SVP Corporate Development
Bought
$50.06K 2,100 at 23.84
2.1%
First buy on file
13 Jan 2017
HARRISON RICHARD L CFO & Treasurer
Sold, plan not stated
$252.58K 6,313 at 40.01
82.0%
Sold half or more
12 Jan 2017
HARRISON RICHARD L CFO & Treasurer
Sold, plan not stated
$572.84K 14,321 at 40.00
91.2%
Sold half or more
6 Jan 2017
HARRISON RICHARD L CFO & Treasurer
Sold, plan not stated 2×
$734.14K 20,634 at 35.58
93.7%
Sold half or more
Showing 1–44 of 44.