Insider trading

Period: 120 months Stock: DGX Share of holding: 50% or more × + 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.

21 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.

21 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.

21 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.

21 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.
21 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
21 decisions over 120 months Remove this filter
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.

21 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
18 Nov 2025
DELANEY MARK E SVP & Chief Commercial Officer
Sold on a plan
$1.49M 7,946 at 187.35
51.3%
Sold half or more
17 May 2022
PREVOZNIK MICHAEL E SVP & General Counsel
Sold, plan not stated
$7.08M 50,604 at 139.97
56.3%
Sold half or more
5 May 2021
PREVOZNIK MICHAEL E SVP & General Counsel
Sold, plan not stated
$6.16M 44,939 at 137.00
52.8%
Sold half or more
24 Dec 2020
GUINAN MARK Executive Vice President & CFO
Sold, plan not stated 2×
$9.84M 81,756 at 120.37
52.6%
Sold half or more
16 Oct 2020
RUSCKOWSKI STEPHEN H Chairman, CEO and President
Sold, plan not stated
$35.04M 291,997 at 120.00
55.1%
Sold half or more
6 Mar 2020
RUSCKOWSKI STEPHEN H Chairman, CEO and President
Sold, plan not stated 5×
$25.93M 230,178 at 112.67
50.4%
Sold half or more
2 Jan 2020
Davis J. E. EVP, General Diagnostics
Sold, plan not stated 4×
$15.15M 143,537 at 105.57
79.7%
Sold half or more
27 Nov 2019
PREVOZNIK MICHAEL E SVP & General Counsel
Sold, plan not stated 3×
$4.79M 44,556 at 107.43
53.0%
Sold half or more
13 Jun 2019
RUSCKOWSKI STEPHEN H Chairman, President and CEO
Sold, plan not stated
$24.46M 244,565 at 100.00
53.4%
Sold half or more
13 Jun 2019
GUINAN MARK Executive Vice President & CFO
Sold, plan not stated
$7.30M 73,005 at 100.00
52.5%
Sold half or more
24 Apr 2019
Davis J. E. EVP, General Diagnostics
Sold, plan not stated
$4.52M 47,574 at 95.00
56.6%
Sold half or more
10 Jul 2018
Cunningham Everett SVP, Commercial
Sold, plan not stated
$4.52M 40,328 at 112.00
51.3%
Sold half or more
2 Jul 2018
Cunningham Everett SVP, Commercial
Sold, plan not stated 6×
$7.47M 68,069 at 109.67
64.0%
Sold half or more
25 May 2018
GUINAN MARK Executive Vice President & CFO
Sold, plan not stated 2×
$6.50M 61,533 at 105.71
51.4%
Sold half or more
8 Mar 2018
Cohen Jon R SVP & Group Exec. Diag. Sol.
Sold, plan not stated 7×
$8.72M 83,669 at 104.20
72.5%
Sold half or more
2 Jan 2018
Davis J. E. EVP, General Diagnostics
Sold, plan not stated
$6.30M 63,880 at 98.68
62.7%
Sold half or more
11 Sep 2017
STANZIONE DANIEL Director
Sold, plan not stated
$4.42M 40,900 at 108.07
54.1%
Sold half or more
19 Jun 2017
Cohen Jon R SVP & Group Exec. Diag. Sol.
Sold, plan not stated 6×
$11.50M 106,900 at 107.55
59.4%
Sold half or more
2 Feb 2017
PREVOZNIK MICHAEL E SVP & General Counsel
Sold, plan not stated 2×
$4.16M 45,000 at 92.39
51.8%
Sold half or more
30 Jan 2017
Doherty Catherine T. SVP, Clin. Franchise Solutions
Sold, plan not stated 3×
$7.25M 80,000 at 90.58
51.0%
Sold half or more
15 Nov 2016
PFEIFFER GARY M Director
Sold, plan not stated 6×
$3.63M 42,643 at 85.09
75.7%
Sold half or more
Showing 1–21 of 21.