MRK

NYSE

Merck & Co., Inc.

Latest disclosureOctober 1, 2026

Insider score Why 0?: 0/ 100
Qualifying buys · 30d: $0

0 purchases · 17 sales

Price by TradingView

Insider transactions 124

Limited filing history

Filters

Last 30 daysNo qualifying insider buying. No qualifying insider sales.

Showing the first 6 of 17 trades on this page.

Sale disclosed

Chirfi Guindo

EVP, Access, Policy & Comms

Common Stock

Reported value: $1.35M
Reported price: $135.00 / share

Sale disclosed

Jennifer Zachary

EVP, General Counsel

Common Stock

Reported value: $10.72M
Reported price: $133.4557 / share

Sale disclosed

Richard R. DeLuca

EVP&Pres, Merck Animal Heallth

Common Stock

Reported value: $2.71M
Reported price: $130.4345 / share

Sale disclosed

Richard R. DeLuca

EVP&Pres, Merck Animal Heallth

Common Stock

Reported value: $973.16K
Reported price: $131.3313 / share

Sale disclosed

Richard R. DeLuca

EVP&Pres, Merck Animal Heallth

Common Stock

Reported value: $718.26K
Reported price: $132.3496 / share

Sale disclosed

Richard R. DeLuca

EVP&Pres, Merck Animal Heallth

Common Stock

Reported value: $1.46M
Reported price: $131.6128 / share

Sale disclosed

Richard R. DeLuca

EVP&Pres, Merck Animal Heallth

Common Stock

Reported value: $79.22K
Reported price: $132.0367 / share

Sale disclosed

Richard R. DeLuca

EVP&Pres, Merck Animal Heallth

Common Stock

Reported value: $105.47K
Reported price: $131.0216 / share

Sale disclosed

Richard R. DeLuca

EVP&Pres, Merck Animal Heallth

Common Stock

Reported value: $643.99K
Reported price: $130.2312 / share

Sale disclosed

Richard R. DeLuca

EVP&Pres, Merck Animal Heallth

Common Stock

Reported value: $39.31K
Reported price: $131.0233 / share

Sale disclosed

David R. Maraldo

EVP & Pres. MMD

Common Stock

Reported value: $812.34K
Reported price: $128.7179 / share

Sale disclosed

David R. Maraldo

EVP & Pres. MMD

Common Stock

Reported value: $1.25M
Reported price: $128.7179 / share

Sale disclosed

David R. Maraldo

EVP & Pres. MMD

Common Stock

Reported value: $345.74K
Reported price: $128.7179 / share

Sale disclosed

David Michael Williams

EVP,Chief Info&Digital Officer

Common Stock

Reported value: $592.35K
Reported price: $128.7707 / share

Sale disclosed

David Michael Williams

EVP,Chief Info&Digital Officer

Common Stock

Reported value: $1.74M
Reported price: $128.7707 / share

Sale disclosed

David Michael Williams

EVP,Chief Info&Digital Officer

Common Stock

Reported value: $4.47M
Reported price: $128.7707 / share

Sale disclosed

Chirfi Guindo

EVP, Access, Policy & Comms

Common Stock

Reported value: $1.97M
Reported price: $131.00 / share

Reporting insider	Security / transaction	Amount / price	Value	Traded / disclosed	Source
EVP, Access, Policy & Comms	Common StockSale	10,000$135.00 / share	$1.35M	Aug 13Filed Aug 13 · 0d later	SEC filing
EVP, General Counsel	Common StockSale	80,315$133.46 / share	$10.72M	Aug 12Filed Aug 13 · 1d later	SEC filing
EVP&Pres, Merck Animal Heallth	Common StockSale	20,784$130.43 / share	$2.71M	Aug 10Filed Aug 12 · 2d later	SEC filing
EVP&Pres, Merck Animal Heallth	Common StockSale2 trades	12,837avg $131.76 / share	$1.69M	Aug 11Filed Aug 12 · 1d later	2 filings 7,410 @ $131.33 · $973.16KSEC filing 5,427 @ $132.35 · $718.26KSEC filing
EVP&Pres, Merck Animal Heallth	Common StockSale2 trades	11,699avg $131.63 / share	$1.54M	Aug 12Filed Aug 12 · 0d later	2 filings 11,099 @ $131.61 · $1.46MSEC filing 600 @ $132.04 · $79.22KSEC filing
EVP&Pres, Merck Animal Heallth	Common StockSale3 trades	6,050avg $130.38 / share	$788.77K	Aug 6Filed Aug 10 · 4d later	3 filings 805 @ $131.02 · $105.47KSEC filing 4,945 @ $130.23 · $643.99KSEC filing 300 @ $131.02 · $39.31KSEC filing
EVP & Pres. MMD	Common StockSale3 trades	18,706avg $128.72 / share	$2.41M	Aug 5Filed Aug 7 · 2d later	3 filings 6,311 @ $128.72 · $812.34KSEC filing 9,709 @ $128.72 · $1.25MSEC filing 2,686 @ $128.72 · $345.74KSEC filing
EVP,Chief Info&Digital Officer	Common StockSale3 trades	52,847avg $128.77 / share	$6.81M	Aug 5Filed Aug 7 · 2d later	3 filings 4,600 @ $128.77 · $592.35KSEC filing 13,542 @ $128.77 · $1.74MSEC filing 34,705 @ $128.77 · $4.47MSEC filing
EVP, Access, Policy & Comms	Common StockSale	15,000$131.00 / share	$1.97M	Aug 6Filed Aug 7 · 1d later	SEC filing

Congress transactions 10

All Congress filings

Purchase disclosed

Merck & Company, Inc. Common Stock (MRK) · Stock

The filing reports a purchase for the member.

Maria Elvira SalazarReporting House member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: August 19, 2026

Purchase disclosed

Merck & Company, Inc. Common Stock (MRK) · Stock

The filing reports a purchase for the member.

Maria Elvira SalazarReporting House member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: August 19, 2026

Full sale disclosed

Merck & Company, Inc. Common Stock (new) · Stock

The filing reports a full sale for the member.

AAAlan ArmstrongReporting Senate member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: March 27, 2026

Purchase disclosed

Merck & Company, Inc. Common Stock (MRK) · Stock

The filing reports a purchase for a joint account.

Josh GottheimerReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: February 4, 2026

Sale disclosed

Merck & Company, Inc. Common Stock (MRK) · Stock

The filing reports a sale for a joint account.

Julie JohnsonReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: December 18, 2025

Purchase disclosed

Merck & Company, Inc. Common Stock (MRK) · Stock

The filing reports a purchase for the member.

Gilbert CisnerosReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: December 19, 2025

Purchase disclosed

Merck & Company, Inc. Common Stock (MRK) · Stock

The filing reports a purchase for the member.

Gilbert CisnerosReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: November 18, 2025

Partial sale disclosed

Merck & Company, Inc. Common Stock (MRK) · Stock

The filing reports a partial sale for a joint account.

Julie JohnsonReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: November 13, 2025

Sale disclosed

Merck & Company, Inc. Common Stock (MRK) · Stock

The filing reports a sale for a spouse.

Valerie HoyleReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: September 23, 2025

Sale disclosed

Merck & Company, Inc. Common Stock (MRK) · Stock

The filing reports a sale for a spouse.

Sheri BiggsReporting House member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: March 19, 2025

Why this buying score?

No qualifying common-equity purchases

No eligible common-equity purchase is public by this cutoff within 180 transaction-date days. Other instruments, exercises and routine activity do not contribute purchase points.

+0 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0000310158
Latest public acceptance: Oct 1, 2026, 05:52 PM UTC
Score calculated: Oct 8, 2026, 12:03 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.

Insider activity can have many explanations. Signal Strength is not a probability of profit or a recommendation to trade.

Reporting insider

Security / transaction

Amount / price

Value

Traded / disclosed

Source

EVP, Access, Policy & Comms

Common StockSale

10,000$135.00 / share

$1.35M

Aug 13Filed Aug 13 · 0d later

SEC filing

EVP, General Counsel

Common StockSale

80,315$133.46 / share

$10.72M

Aug 12Filed Aug 13 · 1d later

SEC filing

EVP&Pres, Merck Animal Heallth

Common StockSale

20,784$130.43 / share

$2.71M

Aug 10Filed Aug 12 · 2d later

SEC filing

EVP&Pres, Merck Animal Heallth

Common StockSale2 trades

12,837avg $131.76 / share

$1.69M

Aug 11Filed Aug 12 · 1d later

2 filings

7,410 @ $131.33 · $973.16KSEC filing
5,427 @ $132.35 · $718.26KSEC filing

EVP&Pres, Merck Animal Heallth

Common StockSale2 trades

11,699avg $131.63 / share

$1.54M

Aug 12Filed Aug 12 · 0d later

2 filings

11,099 @ $131.61 · $1.46MSEC filing
600 @ $132.04 · $79.22KSEC filing

EVP&Pres, Merck Animal Heallth

Common StockSale3 trades

6,050avg $130.38 / share

$788.77K

Aug 6Filed Aug 10 · 4d later

3 filings

805 @ $131.02 · $105.47KSEC filing
4,945 @ $130.23 · $643.99KSEC filing
300 @ $131.02 · $39.31KSEC filing

EVP & Pres. MMD

Common StockSale3 trades

18,706avg $128.72 / share

$2.41M

Aug 5Filed Aug 7 · 2d later

3 filings

6,311 @ $128.72 · $812.34KSEC filing
9,709 @ $128.72 · $1.25MSEC filing
2,686 @ $128.72 · $345.74KSEC filing

EVP,Chief Info&Digital Officer

Common StockSale3 trades

52,847avg $128.77 / share

$6.81M

Aug 5Filed Aug 7 · 2d later

3 filings

4,600 @ $128.77 · $592.35KSEC filing
13,542 @ $128.77 · $1.74MSEC filing
34,705 @ $128.77 · $4.47MSEC filing

EVP, Access, Policy & Comms

Common StockSale

15,000$131.00 / share

$1.97M

Aug 6Filed Aug 7 · 1d later

SEC filing

Why this buying score?

No qualifying common-equity purchases

No eligible common-equity purchase is public by this cutoff within 180 transaction-date days. Other instruments, exercises and routine activity do not contribute purchase points.

+0 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0000310158
Latest public acceptance: Oct 1, 2026, 05:52 PM UTC
Score calculated: Oct 8, 2026, 12:03 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.