Insider trading

Period: 120 months Stock: GLW Role: CEO × + 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.

24 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.

24 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.

24 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.

24 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.
24 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
24 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.

24 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
9 Jun 2026
WEEKS WENDELL P Chairman, CEO and President
Sold at will
$18.65M 100,000 at 186.46
9.9%
Not planned
26 Feb 2026
WEEKS WENDELL P Chairman, CEO and President
Sold at will
$21.37M 137,514 at 155.37
15.5%
Not planned
7 Aug 2025
WEEKS WENDELL P Chairman and CEO
Sold at will
$5.35M 82,103 at 65.19
9.2%
Not planned
28 Feb 2025
WEEKS WENDELL P Chairman and CEO
Sold at will
$2.80M 55,831 at 50.11
6.8%
Not planned
27 Feb 2025
WEEKS WENDELL P Chairman and CEO
Sold at will
$2.21M 44,169 at 50.04
5.1%
Not planned
31 Oct 2024
WEEKS WENDELL P Chairman and CEO
Sold at will
$4.84M 100,000 at 48.36
10.4%
Not planned
26 Jul 2023
WEEKS WENDELL P Chairman and CEO
Sold at will
$3.38M 100,000 at 33.78
10.6%
Not planned
13 Feb 2023
WEEKS WENDELL P Chairman and CEO
Sold, plan not stated
$3.45M 97,167 at 35.51
12.5%
15 Feb 2022
WEEKS WENDELL P Chairman and CEO
Sold, plan not stated
$2.95M 70,567 at 41.85
100%
Sold half or more
14 Feb 2022
WEEKS WENDELL P Chairman and CEO
Sold, plan not stated
$4.33M 104,229 at 41.52
100%
Sold half or more
27 May 2021
WEEKS WENDELL P Chairman and CEO · indirect
Sold, plan not stated
$3.58M 81,271 at 44.00
11.5%
25 May 2021
WEEKS WENDELL P Chairman and CEO · indirect
Sold, plan not stated
$824.15K 18,729 at 44.00
2.6%
19 Feb 2021
WEEKS WENDELL P Chairman and CEO
Sold, plan not stated
$5.53M 146,629 at 37.74
100%
Sold half or more
17 Sep 2020
WEEKS WENDELL P Chairman and CEO · indirect
Sold, plan not stated
$1.78M 54,917 at 32.47
7.0%
30 Jul 2020
WEEKS WENDELL P Chairman and CEO · indirect
Sold, plan not stated
$2.95M 94,928 at 31.07
10.8%
14 Feb 2019
WEEKS WENDELL P Chairman, CEO & President
Sold, plan not stated
$7.54M 223,379 at 33.77
100%
Sold half or more
2 Aug 2018
WEEKS WENDELL P Chairman, CEO & President
Sold, plan not stated
$7.81M 237,470 at 32.87
100%
Sold half or more
8 Jun 2018
WEEKS WENDELL P Chairman, CEO & President
Sold, plan not stated
$6.46M 224,884 at 28.71
100%
Sold half or more
31 Oct 2017
WEEKS WENDELL P Chairman, CEO & President
Sold, plan not stated
$7.81M 248,857 at 31.37
100%
Sold half or more
5 Jun 2017
WEEKS WENDELL P Chairman, CEO & President
Sold, plan not stated
$4.54M 153,500 at 29.58
100%
Sold half or more
26 Apr 2017
WEEKS WENDELL P Chairman, CEO & President · indirect
Sold, plan not stated
$1.17M 41,075 at 28.46
5.1%
2 Mar 2017
WEEKS WENDELL P Chairman, CEO & President
Sold, plan not stated
$4.30M 153,500 at 28.01
100%
Sold half or more
31 Jan 2017
WEEKS WENDELL P Chairman, CEO & President
Sold, plan not stated
$3.45M 130,667 at 26.40
100%
Sold half or more
26 Oct 2016
WEEKS WENDELL P Chairman, CEO & President
Sold, plan not stated
$4.72M 204,750 at 23.07
100%
Sold half or more
Showing 1–24 of 24.