Insider trading

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

48 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.

48 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.

48 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.

48 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.
48 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
48 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.

48 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
12 Aug 2026
Zachary Jennifer EVP, General Counsel
Sold at will
$10.72M 80,315 at 133.46
63.8%
Sold half or more
5 Aug 2026
Williams David Michael EVP,Chief Info&Digital Officer
Sold at will 3×
$6.81M 52,847 at 128.77
62.5%
Sold half or more
5 Aug 2026
Maraldo David R. EVP & Pres. MMD
Sold at will 3×
$2.41M 18,706 at 128.72
50.7%
Sold half or more
9 Feb 2026
Zachary Jennifer EVP, General Counsel
Sold at will 3×
$14.49M 121,573 at 119.15
63.8%
Sold half or more
10 Nov 2025
Downing Cristal N Chief Comm. & Public Afrs Ofcr
Sold at will
$616.40K 7,085 at 87.00
100%
Sold half or more
6 Feb 2025
THULIN INGE G Director
Bought
$250.00K 2,833 at 88.25
×28
First buy on file
5 Feb 2025
Bought
$1.33M 15,000 at 88.50
×15
First buy on file
2 Feb 2024
MIZELL STEVEN EVP, Chief HR Officer
Sold at will
$6.42M 50,694 at 126.65
68.2%
Sold half or more
2 Feb 2024
Zachary Jennifer EVP, General Counsel
Sold at will
$6.28M 49,499 at 126.97
63.0%
Sold half or more
2 Aug 2023
Romanelli Joseph President, Human Health Int?l · indirect
Sold at will
$6.33K 59 at 107.37
100%
Sold half or more
3 May 2023
MIZELL STEVEN EVP, Chief HR Officer
Sold on a plan 4×
$6.36M 53,400 at 119.01
62.8%
Sold half or more
13 Apr 2023
Chattopadhyay Sanat Exe V-P & Pres. MMD
Sold at will 2×
$15.43M 134,055 at 115.07
100%
Sold half or more
3 Feb 2023
Zachary Jennifer EVP, General Counsel
Sold, plan not stated
$7.78M 75,436 at 103.17
58.3%
Sold half or more
9 Jan 2023
Chattopadhyay Sanat Exe V-P & Pres. MMD
Sold, plan not stated 5×
$9.43M 83,994 at 112.29
74.0%
Sold half or more
7 Nov 2022
Oosthuizen Johannes Jacobus President, U.S. Market
Sold, plan not stated
$4.53M 45,561 at 99.47
71.1%
Sold half or more
28 Oct 2022
DeLuca Richard R. EVP&Pres, Merck Animal Heallth
Sold, plan not stated
$16.50M 164,557 at 100.26
54.6%
Sold half or more
28 Oct 2022
Zachary Jennifer EVP, General Counsel
Sold, plan not stated 2×
$16.42M 165,255 at 99.38
81.3%
Sold half or more
28 Oct 2022
Chattopadhyay Sanat Exe V-P & Pres. MMD
Sold, plan not stated
$10.04M 100,292 at 100.10
68.7%
Sold half or more
9 Nov 2021
FRAZIER KENNETH C Executive Chair
Sold, plan not stated 2×
$54.61M 663,881 at 82.26
53.1%
Sold half or more
1 Nov 2021
Gerberding Julie L. EVP, Chief Patient Officer
Sold, plan not stated
$8.46M 96,270 at 87.91
71.1%
Sold half or more
29 Oct 2021
DeLuca Richard R. EVP&Pres, Merck Animal Heallth
Sold, plan not stated
$11.86M 135,405 at 87.56
53.7%
Sold half or more
5 Oct 2020
Davis Robert M EVP, Global Svcs & CFO
Sold, plan not stated
$20.36M 251,273 at 81.03
59.5%
Sold half or more
17 Jul 2020
Gerberding Julie L. EVP Strat Comm, GI Pub Policy
Sold, plan not stated 2×
$2.90M 36,285 at 80.00
57.7%
Sold half or more
7 May 2020
WEEKS WENDELL P Director
Sold, plan not stated
$380.10K 5,000 at 76.02
98.0%
Sold half or more
7 May 2020
BRUN LESLIE A Director
Sold, plan not stated
$377.30K 5,000 at 75.46
72.0%
Sold half or more
13 Jan 2020
Gerberding Julie L. EVP Strat Comm, GI Pub Policy
Sold, plan not stated
$9.12M 102,073 at 89.34
73.4%
Sold half or more
25 Jun 2019
Davis Robert M EVP, Global Svcs & CFO
Sold, plan not stated 2×
$18.51M 216,718 at 85.43
61.2%
Sold half or more
25 Mar 2019
Davis Robert M EVP, Global Svcs & CFO
Sold, plan not stated
$15.86M 192,572 at 82.38
58.3%
Sold half or more
14 Feb 2019
Karachun Rita A Sr. VP Fince-Global Controller
Sold, plan not stated
$5.11M 64,662 at 78.96
80.0%
Sold half or more
13 Feb 2019
WEEKS WENDELL P Director
Sold, plan not stated
$393.55K 5,000 at 78.71
98.0%
Sold half or more
12 Feb 2019
Chattopadhyay Sanat Exe V-P & Pres. MMD
Sold, plan not stated
$5.80M 73,727 at 78.62
58.9%
Sold half or more
8 Feb 2019
BRUN LESLIE A Director
Sold, plan not stated
$235.68K 3,052 at 77.22
61.0%
Sold half or more
4 Feb 2019
GLOCER THOMAS H Director
Sold, plan not stated
$759.59K 10,000 at 75.96
66.2%
Sold half or more
8 Nov 2018
PERLMUTTER ROGER M Exe V-P & Pres, MRL
Sold, plan not stated
$16.97M 225,443 at 75.27
61.4%
Sold half or more
1 Nov 2018
Schechter Adam H EVP & Pres-Global Human Health
Sold, plan not stated 2×
$20.51M 277,879 at 73.81
100%
Sold half or more
31 Oct 2018
Watson Ashley SVP Chief Ethics & Com Officer
Sold, plan not stated
$3.50M 47,036 at 74.33
82.8%
Sold half or more
17 Sep 2018
Schechter Adam H EVP & Pres-Global Human Health
Sold, plan not stated
$7.02M 100,000 at 70.18
100%
Sold half or more
18 Jun 2018
Schechter Adam H EVP & Pres-Global Human Health
Sold, plan not stated
$6.10M 100,000 at 61.00
100%
Sold half or more
9 Feb 2018
WEEKS WENDELL P Director
Sold, plan not stated
$267.83K 5,000 at 53.57
98.0%
Sold half or more
16 Jan 2018
Schechter Adam H EVP & Pres-Global Human Health
Sold, plan not stated
$3.14M 50,994 at 61.63
100%
Sold half or more
6 Feb 2017
WEEKS WENDELL P Director
Sold, plan not stated
$322.54K 5,000 at 64.51
98.0%
Sold half or more
3 Feb 2017
Holston Michael J EVP, General Counsel
Sold, plan not stated 2×
$5.88M 91,959 at 63.96
64.7%
Sold half or more
3 Feb 2017
Schechter Adam H EVP & Pres-Global Human Health
Sold, plan not stated
$2.32M 36,335 at 63.73
100%
Sold half or more
3 Feb 2017
WENDELL PETER C Director
Sold, plan not stated
$955.41K 15,000 at 63.69
93.8%
Sold half or more
3 Feb 2017
Cech Thomas R Director
Sold, plan not stated
$317.10K 5,000 at 63.42
98.0%
Sold half or more
7 Nov 2016
Gerberding Julie L. EVP Strat Comm, Gl Pub Policy
Sold, plan not stated
$5.13M 85,523 at 60.02
68.6%
Sold half or more
2 Nov 2016
Sold, plan not stated
$1.18M 20,000 at 59.06
81.3%
Sold half or more
2 Nov 2016
WENDELL PETER C Director
Sold, plan not stated
$297.50K 5,000 at 59.50
83.3%
Sold half or more
Showing 1–48 of 48.