Insider trading

Period: 120 months Stock: GKOS Minimum amount: $1M × + 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.

76 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.

76 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.

76 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.

76 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.
76 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
76 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.

76 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
28 Aug 2026
Navratil Tomas CHIEF DEVELOPMENT OFFICER
Sold at will 3×
$2.48M 13,744 at 180.67
15.7%
Not planned
11 Aug 2026
Gilliam Joseph E PRESIDENT & COO
Sold at will 2×
$10.78M 60,000 at 179.74
45.3%
Not planned
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)
1 May 2026
Gilliam Joseph E PRESIDENT & COO
Sold at will
$2.81M 19,573 at 143.54
21.0%
Not planned
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)
19 Feb 2026
WEISNER AIMEE S Director
Sold at will 4×
$1.76M 15,000 at 117.38
44.4%
Not planned
22 Jan 2026
Stapley Marc Director
Sold on a plan 5×
$1.92M 15,000 at 127.71
28.6%
Planned (10b5-1)
22 Jan 2026
Gilliam Joseph E PRESIDENT & COO
Sold on a plan 4×
$1.34M 10,498 at 127.68
10.2%
Planned (10b5-1)
16 Jan 2026
Burns Thomas William CHAIRMAN & CEO
Sold on a plan
$21.50M 186,945 at 115.00
54.9%
Sold half or more
8 Jan 2026
Burns Thomas William CHAIRMAN & CEO
Sold on a plan
$10.13M 88,055 at 115.00
36.4%
Planned (10b5-1)
18 Nov 2025
Gilliam Joseph E PRESIDENT & COO
Sold at will
$1.74M 19,340 at 90.00
17.3%
Not planned
26 Feb 2025
Foley Mark J Director
Sold at will
$2.50M 20,687 at 120.72
27.6%
Not planned
20 Dec 2024
Kliman Gilbert H Director
Sold on a plan
$1.50M 10,000 at 150.28
23.6%
Planned (10b5-1)
8 Aug 2024
WEISNER AIMEE S Director
Sold at will
$3.00M 25,000 at 120.00
45.4%
Not planned
8 Apr 2024
Gilliam Joseph E PRESIDENT & COO
Sold on a plan 4×
$6.01M 59,801 at 100.47
37.0%
Planned (10b5-1)
23 Feb 2024
Gilliam Joseph E PRESIDENT & COO
Sold on a plan 3×
$12.92M 140,245 at 92.14
58.8%
Sold half or more
8 Jan 2024
Burns Thomas William CHAIRMAN & CEO
Sold on a plan 5×
$4.95M 60,000 at 82.55
51.8%
Sold half or more
2 Jan 2024
Burns Thomas William CHAIRMAN & CEO
Sold on a plan 3×
$7.33M 95,000 at 77.20
63.0%
Sold half or more
21 Dec 2023
Burns Thomas William CHAIRMAN & CEO
Sold on a plan
$6.79M 79,684 at 85.21
58.8%
Sold half or more
21 Dec 2023
Gilliam Joseph E PRESIDENT & COO
Sold on a plan 3×
$2.12M 25,000 at 84.80
17.2%
Planned (10b5-1)
15 Dec 2023
Burns Thomas William CHAIRMAN & CEO
Sold on a plan 3×
$4.86M 60,000 at 80.94
51.8%
Sold half or more
14 Dec 2023
Burns Thomas William CHAIRMAN & CEO
Sold on a plan 2×
$2.28M 30,000 at 75.91
35.0%
Planned (10b5-1)
14 Dec 2023
Stapley Marc Director
Sold on a plan 2×
$1.23M 16,250 at 75.93
34.2%
Planned (10b5-1)
2 Oct 2023
Burns Thomas William CHAIRMAN & CEO
Sold on a plan 5×
$3.24M 45,000 at 71.98
45.1%
Planned (10b5-1)
14 Jul 2023
Gilliam Joseph E PRESIDENT & COO
Sold at will
$3.30M 42,099 at 78.34
25.9%
Not planned
14 Jul 2023
Burns Thomas William CHAIRMAN & CEO
Sold at will 5×
$2.34M 30,000 at 77.95
4.3%
Not planned
3 Jul 2023
Burns Thomas William CHAIRMAN & CEO
Sold at will 2×
$1.84M 26,400 at 69.51
3.8%
Not planned
28 Jun 2023
Burns Thomas William CHAIRMAN & CEO
Sold at will
$1.88M 26,810 at 70.19
3.8%
Not planned
7 Jun 2023
Burns Thomas William CHAIRMAN & CEO
Sold at will 3×
$1.17M 17,382 at 67.20
2.5%
Not planned
3 May 2021
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated 3×
$1.87M 20,000 at 93.53
27.5%
9 Feb 2021
Gilliam Joseph E CFO, SVP Corporate Development
Sold, plan not stated 2×
$1.33M 13,750 at 96.58
24.3%
1 Feb 2021
Calcaterra Chris M. Chief Operating Officer
Sold, plan not stated 4×
$5.34M 60,417 at 88.38
26.9%
1 Dec 2020
Sold, plan not stated 2×
$3.40M 50,000 at 67.97
76.4%
Sold half or more
26 May 2020
Burns Thomas William Chief Executive Officer
Sold, plan not stated 2×
$8.14M 207,447 at 39.23
40.4%
6 Mar 2019
Calcaterra Chris M. Chief Operating Officer
Sold, plan not stated 3×
$1.10M 16,604 at 66.29
10.0%
5 Mar 2019
Calcaterra Chris M. Chief Operating Officer
Sold, plan not stated 2×
$4.99M 73,396 at 68.01
30.6%
15 Nov 2018
LINK WILLIAM J PHD Director · indirect
Sold, plan not stated 2×
$1.55M 27,025 at 57.41
40.0%
29 Aug 2018
Kliman Gilbert H Director · indirect
Sold, plan not stated
$30.19M 500,000 at 60.38
49.1%
7 Aug 2018
Burns Thomas William Chief Executive Officer · indirect
Sold, plan not stated 2×
$2.02M 51,115 at 39.50
15.6%
6 Aug 2018
Burns Thomas William Chief Executive Officer · indirect
Sold, plan not stated 3×
$3.80M 98,885 at 38.41
26.3%
2 Aug 2018
Calcaterra Chris M. Chief Operating Officer
Sold, plan not stated 3×
$1.73M 38,983 at 44.44
14.0%
6 Mar 2018
SILVERSTEIN JONATHAN Director · indirect
Sold, plan not stated 6×
$4.95M 161,321 at 30.70
100%
Sold half or more
6 Mar 2018
ORBIMED ADVISORS LLC Director · indirect
Sold, plan not stated 6×
$4.95M 161,321 at 30.70
100%
Sold half or more
5 Mar 2018
ORBIMED ADVISORS LLC Director · indirect
Sold, plan not stated 4×
$6.83M 210,596 at 32.44
99.3%
Sold half or more
5 Mar 2018
SILVERSTEIN JONATHAN Director · indirect
Sold, plan not stated 4×
$6.83M 210,596 at 32.44
99.3%
Sold half or more
2 Mar 2018
ORBIMED ADVISORS LLC Director · indirect
Sold, plan not stated 4×
$15.00M 464,583 at 32.29
99.2%
Sold half or more
2 Mar 2018
SILVERSTEIN JONATHAN Director · indirect
Sold, plan not stated 4×
$15.00M 464,583 at 32.29
99.2%
Sold half or more
Showing 1–50 of 76. Page 1 of 2 Older →