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Merck & Co. (MRK)

Merck & Co., Inc. (Merck) is a global healthcare company that operates through two main segments: Pharmaceutical and Animal Health. The company develops and sells human health pharmaceutical and vaccine products, primarily by prescription, for the treatment of human disorders, as well as veterinary pharmaceutical and vaccine products for livestock and companion animals . Merck's revenue growth is driven by strong performance in oncology, vaccines, and animal health, with significant contributions from products like Keytruda and Gardasil/Gardasil 9 .

  1. Pharmaceutical - Develops and sells human health pharmaceutical and vaccine products, primarily by prescription, for the treatment of human disorders. Key products include Keytruda and Gardasil/Gardasil 9, which are major contributors to revenue growth.
  2. Animal Health - Focuses on veterinary pharmaceutical and vaccine products, as well as health management solutions for livestock and companion animals. Includes digitally connected identification, traceability, and monitoring products.
    • Livestock Products - Provides pharmaceutical and vaccine products for livestock health management.
    • Companion Animal Products - Offers pharmaceutical and vaccine products for the health of companion animals.

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NamePositionExternal RolesShort Bio

Robert M. Davis

ExecutiveBoard

Chairman, CEO, and President

Board Member at Duke Energy

Joined Merck in 2014. Previously CFO and EVP. Became CEO in 2021 and Chairman in 2022. Extensive management and financial expertise.

View Report →

Betty D. Larson

Executive

EVP and Chief Human Resources Officer

None

Joined Merck in 2024. Leads HR strategy and operations. Previously at GE HealthCare.

Caroline Litchfield

Executive

EVP and Chief Financial Officer

None

CFO since 2021. Oversees financial strategy and operations. Previously held senior finance roles at Merck.

Chirfi Guindo

Executive

Chief Marketing Officer

None

Joined Merck in 2022. Oversees global marketing strategy. Previously at Biogen.

Cristal Downing

Executive

EVP and Chief Communications Officer

None

Joined Merck in 2021. Leads global communications and public affairs.

Dalton Smart

Executive

SVP Finance – Global Controller

None

Joined Merck in 2009. Promoted to SVP in 2023. Oversees global financial reporting and compliance.

David M. Williams

Executive

EVP, Chief Information and Digital Officer

None

Joined Merck in 2017. EVP since 2020. Leads IT and digital transformation.

Dean Li, M.D., Ph.D.

Executive

EVP and President, Merck Research Labs

None

Leads Merck Research Labs. Joined Merck in 2017. EVP since 2021. Focuses on R&D and innovation.

Jennifer Zachary

Executive

EVP and General Counsel

None

General Counsel since 2018. Oversees legal and compliance functions.

Johannes J. Oosthuizen

Executive

SVP and President, U.S. Human Health

None

Leads U.S. Human Health since 2022. Previously led global oncology and MSD Japan.

Michael A. Klobuchar

Executive

EVP and Chief Strategy Officer

None

Joined Merck in 2009. EVP since 2021. Leads corporate strategy and business development.

Richard R. DeLuca, Jr.

Executive

EVP and President, Merck Animal Health

None

Leads Merck Animal Health since 2011. Oversees global animal health operations.

Sanat Chattopadhyay

Executive

EVP and President, Merck Manufacturing

None

Leads global manufacturing and supply chain operations. Joined Merck in 2010. EVP since 2016.

Christine E. Seidman

Board

Director

Investigator at Howard Hughes Medical Institute, Professor at Harvard

Director since 2020. Renowned geneticist and physician. Expertise in molecular medicine.

Inge G. Thulin

Board

Director

None

Director since 2018. Former CEO of 3M. Expertise in innovation and governance.

Kathy J. Warden

Board

Director

Chair, CEO, and President of Northrop Grumman

Director since 2020. Leads Northrop Grumman. Expertise in cybersecurity and technology.

Mary Ellen Coe

Board

Director

Chief Business Officer at YouTube

Director since 2019. Leads global business operations at YouTube. Former President of Google Customer Solutions.

Pamela J. Craig

Board

Director

Director at Progressive Insurance, Corning Incorporated

Director since 2015. Former CFO of Accenture. Extensive financial and governance expertise.

Patricia F. Russo

Board

Director

Chair at Hewlett Packard Enterprise, Lead Director at General Motors, KKR

Director since 1995. Former CEO of Alcatel-Lucent. Extensive governance and operational expertise.

Paul B. Rothman

Board

Director

Director at Labcorp

Director since 2015. Former CEO of Johns Hopkins Medicine. Expertise in healthcare and governance.

Risa J. Lavizzo-Mourey

Board

Director

Director at GE HealthCare Technologies, Intel Corporation

Director since 2020. Former CEO of Robert Wood Johnson Foundation. Expertise in health policy and governance.

Stephen L. Mayo

Board

Director

Board Member at Sarepta Therapeutics, Allogene Therapeutics

Director since 2021. Renowned scientist in protein design. Professor at Caltech.

Surendralal Karsanbhai

Board

Director

CEO of Emerson Electric, Deputy Chair of Federal Reserve Bank of St. Louis

Director since 2025. CEO of Emerson Electric. Expertise in global business and operations.

Thomas H. Glocer

Board

Independent Lead Director

Board Member at Morgan Stanley, Publicis Groupe

Director since 2007. Former CEO of Thomson Reuters. Extensive governance expertise.

  1. "You've mentioned that GARDASIL shipments to your partner in China have decreased and that inventory at Zhifei remains above historical levels ; what specific strategies are you implementing to address the demand challenges in China, and how confident are you in achieving your goal of over $11 billion in GARDASIL sales by 2030 ?"
  2. "Operating expenses have increased significantly due to strategic investments and charges related to acquisitions like EyeBio and Curon ; can you provide more detail on how these investments will contribute to your long-term growth and justify the increased expenditure ?"
  3. "Given the decline in GARDASIL sales in China and the anticipated similar level of shipments in the fourth quarter , how do you plan to mitigate the impact on your overall revenue growth and what other markets are you focusing on to offset this shortfall ?"
  4. "You have stated that your Phase III pipeline has nearly tripled over the past three years to more than 20 unique assets ; can you elaborate on the timing of these assets reaching the market and how they will contribute to revenue in the face of upcoming patent expirations, especially for KEYTRUDA ?"
  5. "In terms of capital allocation, you mentioned you have capacity to do 'pretty much anything of any size' but are focusing on deals in the $1 billion to $15 billion range ; with the increasing competition in the obesity market, why are you limiting your deal size, and how will this approach enable you to remain competitive in high-growth therapeutic areas ?"

Research analysts who have asked questions during Merck & Co. earnings calls.

Mohit Bansal

Wells Fargo & Company

5 questions for MRK

Also covers: ABBV, AMGN, BMRN +16 more

Umer Raffat

Evercore ISI

5 questions for MRK

Also covers: ALKS, AMGN, BHC +14 more

Vamil Divan

Guggenheim Securities

5 questions for MRK

Also covers: ABBV, ABSI, ANIP +7 more

Akash Tewari

Jefferies

4 questions for MRK

Also covers: ALKS, APLS, ARGX +15 more

Daina Graybosch

Leerink Partners

4 questions for MRK

Also covers: AFMD, BNTX, CGEN +6 more

James Shin

Analyst

4 questions for MRK

Also covers: ABBV, AMGN, AUTL +7 more

Terence Flynn

Morgan Stanley

4 questions for MRK

Also covers: ABBV, AMGN, ARVN +17 more

Trung Huynh

UBS Group AG

4 questions for MRK

Also covers: ABBV, ABOS, AMGN +5 more

Alexandria Hammond

Wolfe Research

3 questions for MRK

Also covers: ABBV, AMGN, BMRN +5 more

Christopher Schott

JPMorgan Chase & Co.

3 questions for MRK

Also covers: ABBV, AMGN, AMRX +13 more

Courtney Breen

AllianceBernstein

3 questions for MRK

Also covers: ABBV, AMGN, BMY +4 more

Asad Haider

Goldman Sachs

2 questions for MRK

Also covers: ABBV, BMY, BNTX +3 more

Chris Schott

JPMorgan Chase & Co.

2 questions for MRK

Also covers: ABBV, AMGN, BMY +11 more

Evan Seigerman

BMO Capital Markets

2 questions for MRK

Also covers: ABBV, AMGN, ARVN +15 more

Geoffrey Meacham

Citi

2 questions for MRK

Also covers: ABBV, BIIB, BMY +6 more

Luisa Hector

Berenberg

2 questions for MRK

Also covers: ABBV, AZN, BMY +1 more

Steve Scala

Cowen

2 questions for MRK

Also covers: ABBV, AZN, BMY +6 more

Tim Anderson

Bank of America

2 questions for MRK

Also covers: ABBV, AMLX, BIIB +3 more

Timothy Anderson

BofA Securities

2 questions for MRK

Also covers: ABBV, AMGN, AZN +10 more

Carter L. Gould

Barclays

1 question for MRK

Also covers: ABBV, ALEC, AMGN +7 more

Chris Shibutani

Goldman Sachs Group, Inc.

1 question for MRK

Also covers: ABBV, ALKS, BMY +11 more

Louise Chen

Cantor Fitzgerald

1 question for MRK

Also covers: ARDX, CNTB, IMAB +14 more
Program DetailsProgram 1
Approval DateOctober 2018
End Date/DurationNo time limit
Total additional amount$10 billion
Remaining authorization amount$2.9 billion
DetailsPart of capital allocation strategy to provide competitive returns to shareholders through dividends and share repurchases. Focus on business development and avoiding excess cash on the balance sheet.
CustomerRelationshipSegmentDetails

McKesson Corporation

Major drug wholesaler

All

21% of total accounts receivable as of December 31, 2024

Cencora, Inc.

Major drug wholesaler

All

21% of total accounts receivable as of December 31, 2024

Cardinal Health, Inc.

Major drug wholesaler

All

13% of total accounts receivable as of December 31, 2024

NameStart DateEnd DateReason for Change
PricewaterhouseCoopers LLP2002 PresentCurrent auditor

Notable M&A activity and strategic investments in the past 3 years.

CompanyYearDetails

MK‑1045 (from Curon Biopharmaceutical)

2024

Merck acquired MK‑1045 for an upfront payment of $700 million as an asset acquisition, with additional contingent milestone payments (up to $300 million each for developmental and regulatory milestones, plus third‑party contingent payments and tiered royalties). The acquisition supports the expansion of its pipeline targeting B‑cell malignancies and autoimmune diseases, with MK‑1045 currently in early‑stage trials.

Eyebiotech Limited (EyeBio)

2024

Merck acquired EyeBio for $1.2 billion (plus $207 million in transaction costs) as an asset acquisition that includes potential future contingent payments (up to $200 million, $1.0 billion, and $500 million for various milestones). The acquisition enhances its ophthalmology portfolio, centering on the lead candidate Restoret (MK‑3000), currently in clinical development for diabetic macular edema and neovascular age‑related macular degeneration.

Elanco Animal Health (Aqua Business)

2024

Merck acquired the aqua business for $1.3 billion in a business combination with no contingent payments, gaining an innovative portfolio including vaccines (e.g., Clynav) and anti‑parasitic treatments (e.g., Imvixa) for aquatic species, along with manufacturing and research facilities in Canada, Vietnam, and Chile. This bolsters its Animal Health portfolio in the aquaculture market.

Harpoon Therapeutics, Inc.

2024

Merck acquired Harpoon Therapeutics for $765 million (with $56 million in transaction costs) as an asset acquisition, gaining its clinical‑stage lead candidate MK‑6070, a T‑cell engager for SCLC and neuroendocrine tumors, with no future contingent payments. The deal supports Merck's immuno‑oncology strategy, reflected in a recorded R&D charge and net asset recognition.

Prometheus Biosciences, Inc.

2023

Merck acquired Prometheus for approximately $11.0 billion (including cash of $200 per share and share‑based awards) as an asset acquisition that strengthens its immunology capabilities through a precision medicine approach for immune‑mediated diseases, centered on lead candidate MK‑7240. The deal, completed in 2023, involved no future contingent payments and resulted in significant R&D expenses recorded.

Imago BioSciences, Inc.

2023

Merck acquired Imago BioSciences for $1.35 billion (including share‑based equity settlements and $60 million in transaction costs) as an asset acquisition, primarily for its lead candidate bomedemstat (MK‑3543), which is in multiple Phase 2 clinical trials for various hematologic conditions. The acquisition recorded net assets of $219 million and a corresponding R&D charge, with no future contingent payments.

Vence

2022

Merck acquired Vence, a pioneer in virtual fencing for rotational grazing and livestock management, to complement its broad Animal Health portfolio. While financial or operational specifics were not provided, the acquisition strategically enhances Merck's offerings in veterinary solutions.

Recent press releases and 8-K filings for MRK.

Merck & Co. reports durable Phase 3 pimicotinib responses in TGCT
·$MRK
Product Launch
  • Merck’s Phase 3 MANEUVER trial of pimicotinib in tenosynovial giant cell tumor (TGCT) showed an objective response rate of 76.2% at a median follow-up of 14.3 months, up from 54% at Week 25.
  • Patients experienced sustained improvements in pain, stiffness, range of motion and physical function through one year, underscoring meaningful quality-of-life benefits.
  • No new safety signals emerged at longer-term follow-up, with the safety profile remaining consistent with earlier data.
  • An application for marketing authorization has been accepted by China’s NMPA, with submissions planned in the U.S. and other regions.
22 hours ago
Merck & Co. reports promising DATROWAY® plus rilvegostomig results in metastatic urothelial cancer trial
·$MRK
  • In the TROPION-PanTumor03 phase 2 trial, DATROWAY® plus rilvegostomig achieved a 68.2% confirmed objective response rate and 95.5% disease control rate as first-line therapy in cisplatin-ineligible patients (n=22).
  • As second-line treatment in patients previously treated with platinum-based chemotherapy (n=18), the combination showed a 38.9% response rate and 83.3% disease control rate, with median progression-free survival of 12.5 months.
  • Grade 3 or higher treatment-related adverse events occurred in 18.2% of first-line and 38.9% of second-line patients, with no grade 3+ interstitial lung disease events observed.
  • Daiichi Sankyo and AstraZeneca have initiated the TROPION-Urothelial03 phase 2/3 trial to compare DATROWAY plus platinum-based chemotherapy versus gemcitabine/platinum in patients progressing after enfortumab vedotin and pembrolizumab.
22 hours ago
Evaxion reports 75% ORR in phase 2 EVX-01 trial
·$MRK
  • Evaxion A/S announced 75% Objective Response Rate (12/16 patients) in its two-year phase 2 trial of EVX-01, up from 69% at one year.
  • 81% of vaccine targets triggered a specific T-cell response across all patients, demonstrating high immunogenicity.
  • 92% of patients remained in response at 24 months with no relapses; 54% deepened their response during treatment.
  • EVX-01, combined with Merck’s anti-PD-1 therapy KEYTRUDA®, was well tolerated in advanced melanoma patients.
  • Data was presented at ESMO 2025, with an upcoming webinar on October 22, 2025 to discuss findings.
1 day ago
EMD Serono announces agreement to expand IVF therapy access
·$MRK
  • EMD Serono, the U.S. healthcare business of Merck KGaA, reached a voluntary agreement with the U.S. government to offer its IVF therapies—Gonal-f, Ovidrel and Cetrotide—via direct-to-consumer sales at an 84% discount off list prices through the TrumpRx.gov platform launching in January 2026.
  • The company secured an exclusion of its pharmaceutical products and ingredients from Section 232 tariffs, contingent on investments in U.S. biopharmaceutical manufacturing and research.
  • To further expand treatment options, EMD Serono will file Pergoveris under the FDA Commissioner’s National Priority Voucher program, potentially becoming the first combined r-hFSH/r-hLH therapy approved in the U.S..
  • This agreement aligns with the White House Executive Order on affordable IVF access and was confirmed at a first-of-its-kind White House Fertility event.
1 day ago
Merck KGaA sets midterm organic sales growth targets
·$MRK
Guidance Update
M&A
CEO Change
  • Merck KGaA targets mid-single-digit annual organic sales growth over the medium term and a full-year 2%–5% outlook for 2025.
  • Revised 2025 net sales guidance to €20.5–21.7 billion, down from a prior €25 billion target, citing a “Covid cliff” impact on mRNA vaccine demand.
  • Aims to expand EBITDA pre-exceptional margin by 1 percentage point, building on a 28.7% margin in 2024.
  • CEO Belén Garijo will step down at end-April 2025; recent M&A includes the $3.9 billion SpringWorks deal and acquisition of JSR Life Sciences’ chromatography unit.
2 days ago
Merck & Co. to Acquire Chromatography Business of JSR Life Sciences
·$MRK
M&A
  • Merck’s MilliporeSigma business agreed to acquire JSR Life Sciences’ chromatography unit, including its Amsphere™ Protein A resin technology, to expand downstream processing offerings.
  • The deal will strengthen Merck’s biologics portfolio with advanced Protein A chromatography solutions for scalable monoclonal antibody purification and is expected to close by end of Q2 2026.
  • JSR’s chromatography business in Belgium employs over 50 people and supplies high-performance Amsphere™ A3 and A+ resins to pharmaceutical and biotech manufacturers worldwide.
3 days ago
Merck presents Phase 3 data for DOR/ISL two-drug HIV regimen
·$MRK
  • Merck presented Phase 3 MK-8591A-052 and MK-8591A-051 data showing investigational DOR/ISL maintained viral suppression and demonstrated non-inferiority to BIC/FTC/TAF and bART, with no treatment-emergent resistance.
  • Participants switching to DOR/ISL experienced minimal changes in weight, body composition, fasting lipids and HOMA-IR at Week 48, comparable to those remaining on their prior regimens.
  • The FDA has accepted the NDA for DOR/ISL with a target action date of April 28, 2026 under PDUFA.
3 days ago
Gilead and Kite present new clinical data at ESMO 2025
·$MRK
  • Gilead Sciences and Kite will showcase new oncology data at the European Society for Medical Oncology (ESMO) 2025 Congress, October 17–21, underscoring their focus on transforming cancer care.
  • Phase 3 ASCENT-03 data demonstrate a statistically significant and clinically meaningful improvement in progression-free survival with Trodelvy® versus chemotherapy as first-line treatment in metastatic triple-negative breast cancer patients ineligible for PD-1/PD-L1 inhibitors.
  • A quality-of-life analysis from the ASCENT-04/KEYNOTE-D19 study will compare Trodelvy + Keytruda® versus Keytruda + chemotherapy in PD-L1+ metastatic triple-negative breast cancer.
  • In the Phase 2 EDGE-Gastric Arm A1 study, first-line treatment with domvanalimab + zimberelimab + chemotherapy yielded a median overall survival of 26.7 months, with 50% of patients surviving beyond two years and no unexpected safety signals.
5 days ago
Evaxion to present phase 2 EVX-01 data at ESMO Congress 2025
·$MRK
Product Launch
  • Evaxion will present two-year clinical efficacy, immunogenicity and safety data from its phase 2 trial of the AI-designed personalized cancer vaccine EVX-01 in advanced melanoma at the ESMO Congress 2025, Berlin, October 17–21, 2025.
  • The data include a 69% Overall Response Rate, reduction in tumor target lesions in 15 of 16 patients, and a strong correlation between AI-Immunology™ predictions and induced immune responses (p = 0.00013).
  • Presentations comprise a mini oral session on October 17 (Abstract #6308, Presentation #1516MO) and a webinar on October 22 featuring Dr. Muhammad Adnan Khattak.
5 days ago
Merck & Co. and Daiichi Sankyo present ADC portfolio data at ESMO Congress
·$MRK
  • Daiichi Sankyo will feature four late-breaking presentations at ESMO 2025, including back-to-back Presidential Symposium data from DESTINY-Breast11 and DESTINY-Breast05 showcasing ENHERTU’s potential as a foundational curative-intent therapy in HER2-positive early breast cancer.
  • Late-breaking results from the TROPION-Breast02 trial demonstrate that DATROWAY significantly improves overall survival versus chemotherapy as first-line treatment for metastatic triple-negative breast cancer patients ineligible for immunotherapy.
  • Data from eight additional trials (DESTINY-Breast09, REJOICE-Ovarian01, IDeate-Lung01, TROPION-PanTumor03, DESTINY-Gastric04, DESTINY-CRC02, DESTINY-PanTumor02 and DS-3939) will further underscore the breadth of the DXd ADC portfolio across multiple cancer types.
  • An investor conference call is scheduled for October 21, 2025 to review these ESMO data.
5 days ago