MRK

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

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Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.

October 16, 2026

Merck Stock Rally Draws Attention to Valuation Concerns. Recent market commentary highlights a renewed confidence in Merck, with analysts debating whether the current rally has priced in too much optimism. While comparisons with peers like AbbVie and Bristol Myers Squibb focus on dividend yields and value, the primary discussion centers on the sustainability of Merck's recent price movement. The stock's high trailing P/E ratio of 112.6 provides context for these valuation concerns, suggesting that investors are closely monitoring if the current momentum can be sustained.

this person other insiders at MRK

Insiders & Stakes

Kenneth C. Frazier
Executive Chair
700,653
Shares held
Robert M. Davis
CEO & President
450,351
Shares held
Richard R. DeLuca
EVP&Pres, Merck Animal Heallth
110,167
Shares held
Frank Clyburn
Chief Executive Officer
97,095
Shares held
Dean Y. Li
Director
94,431
Shares held
Litchfield Caroline
EVP & CFO
92,301
Shares held
Gerberding Julie L.
EVP, Chief Patient Officer
48,712
Shares held
Rita A. Karachun
Sr. VP Fince-Global Controller
45,710
Shares held
Jennifer Zachary
EVP, General Counsel
45,509
Shares held
Chirfi Guindo
Head of Glob Prod Strat & Com
36,613
Shares held
David Michael Williams
EVP,Chief Info&Digital Officer
31,716
Shares held
Romanelli Joseph
President, Human Health Int?l
28,739
Shares held
Michael A. Klobuchar
EVP - Chief Strategy Officer
23,621
Shares held
Steven Mizell
Director
23,619
Shares held
Oosthuizen Johannes Jacobus
SVP, U.S. Market
21,895
Shares held
David R. Maraldo
EVP & Pres. MMD
18,212
Shares held
Douglas M. Baker Jr.
Director
16,000
Shares held
Sanat Chattopadhyay
Exe V-P & Pres. MMD
15,347
Shares held
Larson Betty D
EVP, Chief HR Officer
13,774
Shares held
Dalton E. Smart III
SVP Fin. - Global Controller
9,388
Shares held
LeCointe-Cephas Lisa
SVP Chief Ethics & Com Officer
5,142
Shares held
THULIN INGE G
Director
2,933
Shares held
Garay Arpa
Chief Commercial Officer
2,109
Shares held
Merck & Co., Inc.1,000
Shares held
Downing Cristal N
Chief Comm. & Public Afrs Ofcr
0
Shares held

Transaction History

Chirfi Guindo▼ Sell$1.4M
Jennifer Zachary▲ Buy$1.1M
Richard R. DeLuca▼ Sell$1.5M
Richard R. DeLuca▼ Sell$79K
Jennifer Zachary▼ Sell$10.7M
Jennifer Zachary▲ Buy$4.9M
Richard R. DeLuca▼ Sell$973K
Richard R. DeLuca▼ Sell$718K
Richard R. DeLuca▼ Sell$2.7M
Richard R. DeLuca▼ Sell$105K
Richard R. DeLuca▼ Sell$644K
Richard R. DeLuca▼ Sell$39K
Chirfi Guindo▼ Sell$2.0M
David R. Maraldo▼ Sell$812K
David R. Maraldo▲ Buy$465K
David R. Maraldo▲ Buy$846K
David R. Maraldo▼ Sell$1.2M
David R. Maraldo▲ Buy$228K
David R. Maraldo▼ Sell$346K
David Michael Williams▲ Buy$357K
David Michael Williams▼ Sell$592K
David Michael Williams▲ Buy$1.0M
David Michael Williams▼ Sell$1.7M
David Michael Williams▲ Buy$2.6M
David Michael Williams▼ Sell$4.5M
Dalton E. Smart III▲ Buy$43K
Dalton E. Smart III▼ Sell$15K
David R. Maraldo▲ Buy$62K
David R. Maraldo▼ Sell$18K
Dalton E. Smart III▲ Buy$51K
Dalton E. Smart III▼ Sell$18K
Larson Betty D▲ Buy$1.3M
Larson Betty D▼ Sell$571K
Chirfi Guindo▲ Buy$216K
Chirfi Guindo▼ Sell$107K
Sanat Chattopadhyay▲ Buy$286K
Sanat Chattopadhyay▼ Sell$124K
Richard R. DeLuca▲ Buy$277K
Richard R. DeLuca▼ Sell$137K
David Michael Williams▲ Buy$152K
David Michael Williams▼ Sell$75K
Litchfield Caroline▼ Sell$213K
Dalton E. Smart III▲ Buy$104K
Dalton E. Smart III▼ Sell$36K
Dean Y. Li▲ Buy$520K
Dean Y. Li▼ Sell$256K
Jennifer Zachary▲ Buy$325K
Jennifer Zachary▼ Sell$160K
Larson Betty D▲ Buy$229K
Larson Betty D▼ Sell$79K
Litchfield Caroline▲ Buy$433K
Robert M. Davis▲ Buy$1.5M
Robert M. Davis▼ Sell$721K
Oosthuizen Johannes Jacobus▲ Buy$152K
Oosthuizen Johannes Jacobus▼ Sell$75K
Chirfi Guindo▼ Sell$1.2M
Dean Y. Li▼ Sell$1.2M
Chirfi Guindo▼ Sell$1.2M
Jennifer Zachary▲ Buy$3.1M
Jennifer Zachary▼ Sell$3.1M
Jennifer Zachary▲ Buy$6.8M
Jennifer Zachary▼ Sell$6.8M
Jennifer Zachary▲ Buy$4.6M
Jennifer Zachary▼ Sell$4.6M
Richard R. DeLuca▼ Sell$4.6M
David Michael Williams▼ Sell$610K
David Michael Williams▲ Buy$388K
Oosthuizen Johannes Jacobus▼ Sell$1.8M
Chirfi Guindo▼ Sell$2.4M
Dalton E. Smart III▲ Buy$248K
Dalton E. Smart III▼ Sell$479K
Litchfield Caroline▲ Buy$2.2M
Litchfield Caroline▼ Sell$5.0M
Dean Y. Li▲ Buy$845K
Dean Y. Li▼ Sell$1.8M
Robert M. Davis▼ Sell$1.8M
Robert M. Davis▼ Sell$3.8M
Dalton E. Smart III▼ Sell$287K
Jennifer Zachary▲ Buy$1.2M
David Michael Williams▲ Buy$656K
Romanelli Joseph▲ Buy$613K
Litchfield Caroline▲ Buy$1.7M
Chirfi Guindo▲ Buy$1.1M
Richard R. DeLuca▲ Buy$1.3M
Oosthuizen Johannes Jacobus▲ Buy$540K
Robert M. Davis▲ Buy$5.1M
Sanat Chattopadhyay▲ Buy$1.5M
Dean Y. Li▲ Buy$2.2M
Dalton E. Smart III▲ Buy$114K
Downing Cristal N▼ Sell$616K
David Michael Williams▼ Sell$720K
David Michael Williams▲ Buy$1.4M
Chirfi Guindo▲ Buy$2.9M
Chirfi Guindo▼ Sell$1.4M
David Michael Williams▼ Sell$669K
Dalton E. Smart III▲ Buy$43K
Dalton E. Smart III▼ Sell$21K
Dalton E. Smart III▲ Buy$127K
Dalton E. Smart III▼ Sell$49K
Dalton E. Smart III▲ Buy$32K
Dalton E. Smart III▼ Sell$11K
Romanelli Joseph▲ Buy$188K
Romanelli Joseph▼ Sell$93K
Dalton E. Smart III▲ Buy$39K
Dalton E. Smart III▼ Sell$13K
Romanelli Joseph▲ Buy$175K
Romanelli Joseph▼ Sell$86K
Larson Betty D▲ Buy$961K
Larson Betty D▼ Sell$437K
Dalton E. Smart III▲ Buy$290K
Dalton E. Smart III▼ Sell$353K
Oosthuizen Johannes Jacobus▼ Sell$715K
David Michael Williams▼ Sell$512K
Oosthuizen Johannes Jacobus▲ Buy$1.1M
Oosthuizen Johannes Jacobus▼ Sell$559K
THULIN INGE G▲ Buy$250K
Downing Cristal N▼ Sell$210K
Douglas M. Baker Jr.▲ Buy$1.3M
Richard R. DeLuca▲ Buy$2.5M
Chirfi Guindo▲ Buy$2.8M
Jennifer Zachary▲ Buy$2.5M
Oosthuizen Johannes Jacobus▲ Buy$849K
Dean Y. Li▲ Buy$3.2M
Downing Cristal N▲ Buy$925K
Sanat Chattopadhyay▲ Buy$2.8M
Robert M. Davis▲ Buy$9.3M
Litchfield Caroline▲ Buy$2.3M
Dalton E. Smart III▲ Buy$253K
David Michael Williams▲ Buy$1.0M
Chirfi Guindo▲ Buy$4.3M
Chirfi Guindo▼ Sell$2.0M
Oosthuizen Johannes Jacobus▲ Buy$116K
Dalton E. Smart III▲ Buy$78K
Richard R. DeLuca▲ Buy$3.5M
Richard R. DeLuca▼ Sell$1.7M
Michael A. Klobuchar▲ Buy$113K
Michael A. Klobuchar▼ Sell$56K
Dalton E. Smart III▼ Sell$39K
Oosthuizen Johannes Jacobus▼ Sell$57K
Dalton E. Smart III▲ Buy$66K
Dalton E. Smart III▼ Sell$33K
Dalton E. Smart III▲ Buy$196K
Dalton E. Smart III▼ Sell$76K
Romanelli Joseph▲ Buy$291K
Romanelli Joseph▼ Sell$144K
Dalton E. Smart III▲ Buy$49K
Dalton E. Smart III▼ Sell$17K
Merck & Co., Inc.▲ Buy$492.1M
Litchfield Caroline▲ Buy$2.2M
Robert M. Davis▲ Buy$6.3M
Robert M. Davis▼ Sell$10.7M
Litchfield Caroline▼ Sell$4.8M
Robert M. Davis▲ Buy$3.1M
Robert M. Davis▲ Buy$8.0M
Robert M. Davis▼ Sell$15.7M
Robert M. Davis▼ Sell$3.2M
Romanelli Joseph▼ Sell$125K
Dean Y. Li▲ Buy$913K
Dean Y. Li▼ Sell$1.8M
David Michael Williams▼ Sell$185K
Oosthuizen Johannes Jacobus▲ Buy$510K
Oosthuizen Johannes Jacobus▲ Buy$620K
Jennifer Zachary▲ Buy$1.7M
Oosthuizen Johannes Jacobus▲ Buy$519K
Jennifer Zachary▼ Sell$6.3M
Steven Mizell▲ Buy$58K
Oosthuizen Johannes Jacobus▼ Sell$2.4M
Steven Mizell▲ Buy$2.4M
Steven Mizell▼ Sell$6.4M
Jennifer Zachary▲ Buy$2.8M
Steven Mizell▲ Buy$2.2M
Sanat Chattopadhyay▲ Buy$3.2M
Litchfield Caroline▲ Buy$2.3M
Dean Y. Li▲ Buy$3.1M
Richard R. DeLuca▲ Buy$2.8M
Robert M. Davis▲ Buy$9.1M
Michael A. Klobuchar▲ Buy$465K
David Michael Williams▲ Buy$1.2M
Dalton E. Smart III▲ Buy$318K
Oosthuizen Johannes Jacobus▲ Buy$374K
Oosthuizen Johannes Jacobus▼ Sell$213K
Richard R. DeLuca▼ Sell$4.6M
Oosthuizen Johannes Jacobus▼ Sell$46K
Oosthuizen Johannes Jacobus▲ Buy$94K
Steven Mizell▼ Sell$463K
Steven Mizell▼ Sell$475K
Chirfi Guindo▲ Buy$3.9M
Chirfi Guindo▼ Sell$1.9M
Romanelli Joseph▼ Sell$3K
Romanelli Joseph▼ Sell$6K
Jennifer Zachary▼ Sell$2.3M
Oosthuizen Johannes Jacobus▲ Buy$107K
Michael A. Klobuchar▼ Sell$52K
LeCointe-Cephas Lisa▲ Buy$96K
Michael A. Klobuchar▲ Buy$105K
Oosthuizen Johannes Jacobus▼ Sell$53K
LeCointe-Cephas Lisa▼ Sell$33K
Rita A. Karachun▲ Buy$112K
Rita A. Karachun▼ Sell$39K
Rita A. Karachun▲ Buy$985K

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