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MyoKardia

Full company profile

uuid0004fe2

Namestring
MyoKardia
Websiteurl
myokardia.com
Company typeenum
Private
Founded yearint
2015
Descriptiontext

MyoKardia was a clinical-stage biopharmaceutical company founded in 2012 (incorporated as an independent biotech in 2015) and based in South San Francisco, California, that developed targeted therapies for rare cardiovascular diseases. Its proprietary platform centered on cardiac myosin modulators — small molecules designed to correct the underlying biophysical mechanisms of heart muscle contraction — applied to genetic conditions where prior therapies only managed symptoms. The company originated mavacamten, a first-in-class cardiac myosin inhibitor that received FDA approval in 2021 for hypertrophic cardiomyopathy (HCM), a condition affecting roughly 1 in 500 people in the US. Its pipeline additionally included danicamtiv (a cardiac myosin activator in Phase 2b/3 for genetically driven dilated cardiomyopathy), ataciguat (licensed from Sanofi/Mayo Clinic for calcific aortic valve stenosis), and tonlamarsen (licensed from Ionis Pharmaceuticals for acute severe hypertension).

The company's revenue model was that of a traditional development-stage biotech: it did not generate commercial product revenue, instead funding operations through venture capital (approximately $98 million raised across rounds in 2012-2017) and capturing value through eventual commercialization or M&A. In November 2020, Bristol Myers Squibb acquired MyoKardia for approximately $13.1 billion, providing BMS with full rights to mavacamten (now marketed as Camzyos) and the broader cardiac myosin pipeline. Post-acquisition, MyoKardia operates as a wholly-owned subsidiary of BMS with its assets reported within BMS's cardiovascular franchise. Several former MyoKardia founders and executives subsequently launched Kardigan in 2023 to advance late-stage cardiovascular programs outside of BMS.

Short descriptiontext

MyoKardia was a clinical-stage biopharmaceutical company that developed cardiac myosin modulator therapies for rare cardiovascular diseases, including the FDA-approved mavacamten for hypertrophic cardiomyopathy. The company was acquired by Bristol Myers Squibb in 2020 for approximately $13.1 billion and now operates as a wholly-owned subsidiary.

Operating statusenum
Acquired
Ownership categoryenum
Headcount rangeband
251–500
akta.pro rankint
HeadquartersBrisbane, United States
HQ citystring
Brisbane
HQ countrystring
United States
HQ regionstring
North America
Markets served

Serves global market

Keyword5 values
cardiovascular therapeutics, cardiac myosin modulators, biopharmaceutical drugs, hypertrophic cardiomyopathy treatment, precision cardiovascular medicine
Industry3 codes
1Rare Cardiovascular & Vascular Disorder Therapies
CodeHLAIAIAHPrimaryYes
2Cardiology & Vascular Specialty Pharmaceuticals
CodeHLAIACAGPrimaryNo
3Cardiometabolic Pharmaceuticals (Cardiovascular/Diabetes/Obesity)
CodeHLAIAAAEPrimaryNo
NAICS code1 code
  • Biological Product (except Diagnostic) Manufacturing325414
SIC code1 code
  • Medicinal Chemicals & Botanical Products2833
Product category
Cardiovascular Biopharmaceuticals
Social media profiles1 record
Revenue model1 record
1Drug development and commercialization
TypeOne Time License
Description

Traditional biotech revenue model focused on developing and commercializing novel cardiovascular medicines. The company developed proprietary compounds through clinical trials toward regulatory approval and market launch.

openpr.com
Cost components3 values
Technology or R&D, Personnel, Operations
GTM typeB2B
B2B
Offering typeHardware or Manufacturing
Hardware or Manufacturing
Core offering1 text field

MyoKardia developed targeted small-molecule therapies for rare cardiovascular diseases based on proprietary cardiac myosin modulation technology. Its lead asset, mavacamten (marketed as Camzyos), received FDA approval for hypertrophic cardiomyopathy, while additional programs included danicamtiv (dilated cardiomyopathy), ataciguat (calcific aortic valve stenosis), and tonlamarsen (acute severe hypertension). The company originated the cardiac myosin activator drug class and advanced candidates through clinical development toward regulatory approval.

Differentiator
Functional benefit
Problem solved
Quantifiable outcome1 value
  • Mavacamten (Camzyos) approved by FDA for hypertrophic cardiomyopathy treatment
Product overview1 text field

MyoKardia was a cardiovascular biotech company focused on developing targeted therapies for heart diseases. The company originated cardiac myosin modulators including danicamtiv (a cardiac myosin activator in Phase 2b/3 for dilated cardiomyopathy) and mavacamten (an FDA-approved treatment for hypertrophic cardiomyopathy). MyoKardia was acquired by Bristol-Myers Squibb in 2020. Veterans of MyoKardia subsequently founded Kardigan to advance three late-stage cardiovascular programs: danicamtiv, ataciguat (licensed from Sanofi and Mayo Clinic for calcific aortic valve stenosis), and tonlamarsen (licensed from Ionis Pharmaceuticals for acute severe hypertension).

Product and service4 records
1Mavacamten (Camzyos)
CategoryCardiovascular Biopharmaceuticals
2Danicamtiv
CategoryCardiovascular Biopharmaceuticals
3Ataciguat
CategoryCardiovascular Biopharmaceuticals
4Tonlamarsen
CategoryCardiovascular Biopharmaceuticals
Scale indicator3 records

Each record includes

Type, Value, Description, Source

Recent move6 records

Each record includes

Date, Type, Title, Description, Source

Expansion highlight4 records

Each record includes

Type, Description

Peers10 records
TypeDirect peer
Description

Cardiovascular-focused biopharma developing cardiac myosin modulators (e.g., omecamtiv mecarbil, aficamten) for HCM and heart failure. Most directly comparable to MyoKardia given shared cardiac myosin mechanism and overlapping cardiovascular indications.

TypeBroad incumbent
Description

MyoKardia's parent company post-2020 acquisition; a global biopharmaceutical company with cardiovascular, oncology, immunology, hematology, and neuroscience franchises. Operates MyoKardia as a wholly-owned subsidiary within its cardiovascular business.

TypeDirect peer
Description

Clinical-stage genetic medicines company focused on heart disease, with programs in HCM and DCM. Comparable to MyoKardia through shared focus on genetically-driven cardiomyopathies and rare cardiovascular indications.

TypeDirect peer
Description

Clinical-stage biopharma developing precision medicines for cardiac and muscle diseases, including programs targeting cardiac myosin and HCM. Directly comparable to MyoKardia in mechanism and disease focus.

TypeEmerging player
Description

Cardiovascular biopharma founded in 2023 by former MyoKardia executives and founders. Is advancing danicamtiv, ataciguat, and tonlamarsen — assets originated at MyoKardia — making it the most direct emerging spin-out competitor.

6Stealth BioTherapeutics
TypeDirect peer
Description

Clinical-stage biopharma developing therapies for rare cardiomyopathies and mitochondrial diseases. Comparable to MyoKardia through shared focus on rare cardiac indications with high unmet need.

TypeEmerging player
Description

Clinical-stage gene therapy company with a focus on cardiac genetic diseases, including DCM. Comparable to MyoKardia in targeting genetically-defined cardiovascular patient populations.

TypeEmerging player
Description

Clinical-stage biopharma developing therapies that target cardiac metabolism for the treatment of cardiomyopathies and heart failure. Comparable to MyoKardia in mechanism-driven approach to cardiovascular disease.

TypeBroad incumbent
Description

Global biopharmaceutical company with a substantial cardiovascular franchise (e.g., Entresto for heart failure). Broad incumbent competitor operating across multiple cardiovascular indications including HCM and heart failure.

TypeBroad incumbent
Description

Global biopharmaceutical company with cardiovascular and rare disease franchises (including Alexion). Broad incumbent with overlapping capabilities in cardiology and rare cardiovascular therapeutics.

Market position
Strengths4 records

Each record includes

Headline, Details, Source

Weaknesses5 records

Each record includes

Headline, Details, Source

Competitive moat4 records

Each record includes

Type, Details

Key risks5 records

Each record includes

Headline, Details, Source

Key highlights6 records

Each record includes

Headline, Details, Source

Customer concentration

Classification, Details

Segment1 record

Each record includes

Title, Type, Primary, Description, Pain point addressed, Use case, Source

Ideal customer profile1 record

Each record includes

Profile, Firmographic size, Sales motion, Sales cycle length, Buying structure, Purchase trigger, Buyer persona, Geography, Industry vertical, Primary use case, Description, Pain points, Evidence proof points, Target buyer

Technology focused
Yes
API detail
Has APIbool
No

Docs URL, Description

AI maturity
App detail

Has app

Feature1 record

Each record includes

Title, Differentiator, Description, Source

Core technology
Revenue estimate
Valuation estimate
Number of profiles
Profiles1 record

Each record includes

Name, Designation, Designation category, Overview, Profile commentary, Source

No data
No data
Funding overview

Funding stage, Last funding date, Total funding USD

Funding rounds5 records

Each record includes

Round, Amount USD, Date, Pre money valuation, Total investors, Investors, News

Investors8 records

Each record includes

Name, Type, Date of entry, Rounds participated, Website

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Each record includes

Name, Acquisition type, Announced date, Completed date, Status, Website, News

Investment

Each record includes

Name, Round, Announced date, Lead investor, Website, News

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

MyoKardia

Cardiovascular Biopharmaceuticalsmyokardia.com

MyoKardia was a clinical-stage biopharmaceutical company that developed cardiac myosin modulator therapies for rare cardiovascular diseases, including the FDA-approved mavacamten for hypertrophic cardiomyopathy. The company was acquired by Bristol Myers Squibb in 2020 for approximately $13.1 billion and now operates as a wholly-owned subsidiary.

What MyoKardia does

MyoKardia was a clinical-stage biopharmaceutical company founded in 2012 (incorporated as an independent biotech in 2015) and based in South San Francisco, California, that developed targeted therapies for rare cardiovascular diseases. Its proprietary platform centered on cardiac myosin modulators — small molecules designed to correct the underlying biophysical mechanisms of heart muscle contraction — applied to genetic conditions where prior therapies only managed symptoms. The company originated mavacamten, a first-in-class cardiac myosin inhibitor that received FDA approval in 2021 for hypertrophic cardiomyopathy (HCM), a condition affecting roughly 1 in 500 people in the US. Its pipeline additionally included danicamtiv (a cardiac myosin activator in Phase 2b/3 for genetically driven dilated cardiomyopathy), ataciguat (licensed from Sanofi/Mayo Clinic for calcific aortic valve stenosis), and tonlamarsen (licensed from Ionis Pharmaceuticals for acute severe hypertension).

The company's revenue model was that of a traditional development-stage biotech: it did not generate commercial product revenue, instead funding operations through venture capital (approximately $98 million raised across rounds in 2012-2017) and capturing value through eventual commercialization or M&A. In November 2020, Bristol Myers Squibb acquired MyoKardia for approximately $13.1 billion, providing BMS with full rights to mavacamten (now marketed as Camzyos) and the broader cardiac myosin pipeline. Post-acquisition, MyoKardia operates as a wholly-owned subsidiary of BMS with its assets reported within BMS's cardiovascular franchise. Several former MyoKardia founders and executives subsequently launched Kardigan in 2023 to advance late-stage cardiovascular programs outside of BMS.

MyoKardia firmographics

Firmographics
Name
MyoKardia
Website
https://myokardia.com
Company type
Private
Founded year
2015
Operating status
Acquired
Headcount range
251–500 employees
Short description
MyoKardia was a clinical-stage biopharmaceutical company that developed cardiac myosin modulator therapies for rare cardiovascular diseases, including the FDA-approved mavacamten for hypertrophic cardiomyopathy. The company was acquired by Bristol Myers Squibb in 2020 for approximately $13.1 billion and now operates as a wholly-owned subsidiary.
Ownership category
akta.pro rank

MyoKardia industry classification

Industry
Product category
Cardiovascular Biopharmaceuticals
NAICS
Biological Product (except Diagnostic) Manufacturing (325414)
SIC
Medicinal Chemicals & Botanical Products (2833)
akta.pro primary industry
Rare Cardiovascular & Vascular Disorder Therapies (HLAIAIAH)
akta.pro secondary industries
Cardiology & Vascular Specialty Pharmaceuticals (HLAIACAG), Cardiometabolic Pharmaceuticals (Cardiovascular/Diabetes/Obesity) (HLAIAAAE)

Keywords

  • Cardiovascular therapeutics
  • Cardiac myosin modulators
  • Biopharmaceutical drugs
  • Hypertrophic cardiomyopathy treatment
  • Precision cardiovascular medicine

Where MyoKardia is headquartered

Location

Headquarters

HQ city
Brisbane
HQ country
United States
HQ region
North America

Markets served

MyoKardia business model

Business model
GTM type
B2B
Offering type
Hardware or Manufacturing
Cost components
Technology or R&D, Personnel, Operations

Revenue model

  1. Drug development and commercialization: Traditional biotech revenue model focused on developing and commercializing novel cardiovascular medicines. The company developed proprietary compounds through clinical trials toward regulatory approval and market launch.

MyoKardia product offering

Product offering

Core offering

MyoKardia developed targeted small-molecule therapies for rare cardiovascular diseases based on proprietary cardiac myosin modulation technology. Its lead asset, mavacamten (marketed as Camzyos), received FDA approval for hypertrophic cardiomyopathy, while additional programs included danicamtiv (dilated cardiomyopathy), ataciguat (calcific aortic valve stenosis), and tonlamarsen (acute severe hypertension). The company originated the cardiac myosin activator drug class and advanced candidates through clinical development toward regulatory approval.

Product overview

MyoKardia was a cardiovascular biotech company focused on developing targeted therapies for heart diseases. The company originated cardiac myosin modulators including danicamtiv (a cardiac myosin activator in Phase 2b/3 for dilated cardiomyopathy) and mavacamten (an FDA-approved treatment for hypertrophic cardiomyopathy). MyoKardia was acquired by Bristol-Myers Squibb in 2020. Veterans of MyoKardia subsequently founded Kardigan to advance three late-stage cardiovascular programs: danicamtiv, ataciguat (licensed from Sanofi and Mayo Clinic for calcific aortic valve stenosis), and tonlamarsen (licensed from Ionis Pharmaceuticals for acute severe hypertension).

Differentiator

Problem solved

Functional benefit

Products and services

  • Mavacamten (Camzyos)
  • Danicamtiv
  • Ataciguat
  • Tonlamarsen

Quantifiable outcome

  • Mavacamten (Camzyos) approved by FDA for hypertrophic cardiomyopathy treatment

Companies that use MyoKardia

Customer profile

Segments1 record

Ideal customer profiles1 record

MyoKardia technology and API

Technology

Technology focussed Yes

API detail

Has API
No
API docs
API detail

Core technology

AI maturity

App detail

Feature1 record

MyoKardia partnerships and signals

Strategic signal

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

MyoKardia competitors and assessment

Company assessment

Direct peers

  • Cytokinetics: Cardiovascular-focused biopharma developing cardiac myosin modulators (e.g., omecamtiv mecarbil, aficamten) for HCM and heart failure. Most directly comparable to MyoKardia given shared cardiac myosin mechanism and overlapping cardiovascular indications.
  • Tenaya Therapeutics: Clinical-stage genetic medicines company focused on heart disease, with programs in HCM and DCM. Comparable to MyoKardia through shared focus on genetically-driven cardiomyopathies and rare cardiovascular indications.
  • Edgewise Therapeutics: Clinical-stage biopharma developing precision medicines for cardiac and muscle diseases, including programs targeting cardiac myosin and HCM. Directly comparable to MyoKardia in mechanism and disease focus.
  • Stealth BioTherapeutics: Clinical-stage biopharma developing therapies for rare cardiomyopathies and mitochondrial diseases. Comparable to MyoKardia through shared focus on rare cardiac indications with high unmet need.

Broad incumbents

  • Bristol Myers Squibb: MyoKardia's parent company post-2020 acquisition; a global biopharmaceutical company with cardiovascular, oncology, immunology, hematology, and neuroscience franchises. Operates MyoKardia as a wholly-owned subsidiary within its cardiovascular business.
  • Novartis: Global biopharmaceutical company with a substantial cardiovascular franchise (e.g., Entresto for heart failure). Broad incumbent competitor operating across multiple cardiovascular indications including HCM and heart failure.
  • AstraZeneca: Global biopharmaceutical company with cardiovascular and rare disease franchises (including Alexion). Broad incumbent with overlapping capabilities in cardiology and rare cardiovascular therapeutics.

Emerging players

  • Kardigan: Cardiovascular biopharma founded in 2023 by former MyoKardia executives and founders. Is advancing danicamtiv, ataciguat, and tonlamarsen — assets originated at MyoKardia — making it the most direct emerging spin-out competitor.
  • Lexeo Therapeutics: Clinical-stage gene therapy company with a focus on cardiac genetic diseases, including DCM. Comparable to MyoKardia in targeting genetically-defined cardiovascular patient populations.
  • Imbria Pharmaceuticals: Clinical-stage biopharma developing therapies that target cardiac metabolism for the treatment of cardiomyopathies and heart failure. Comparable to MyoKardia in mechanism-driven approach to cardiovascular disease.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

MyoKardia social profiles

Digital presence

MyoKardia financial estimates

Financial estimate

Revenue estimate

Valuation estimate

MyoKardia leadership team

Management profile

Number of profiles

Profiles1 record

MyoKardia funding detail

Funding detail

Funding overview

Funding rounds5 records

Investors8 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

MyoKardia M&A and investment

M&A and investment

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about MyoKardia

What does MyoKardia do?

MyoKardia developed targeted small-molecule therapies for rare cardiovascular diseases based on proprietary cardiac myosin modulation technology. Its lead asset, mavacamten (marketed as Camzyos), received FDA approval for hypertrophic cardiomyopathy, while additional programs included danicamtiv (dilated cardiomyopathy), ataciguat (calcific aortic valve stenosis), and tonlamarsen (acute severe hypertension). The company originated the cardiac myosin activator drug class and advanced candidates through clinical development toward regulatory approval.

Is MyoKardia a public or private company?

MyoKardia is a private company. It is classified as corporate owned and is currently acquired.

When was MyoKardia founded?

MyoKardia was founded in 2015. It employs 251 to 500 people.

Where is MyoKardia based?

MyoKardia is headquartered in Brisbane, United States, in the North America region.

How does MyoKardia make money?

One revenue line is on record: drug development and commercialization.

Who are MyoKardia's main competitors?

Direct peers on record are Cytokinetics, Tenaya Therapeutics, Edgewise Therapeutics and Stealth BioTherapeutics. Broad incumbents are Bristol Myers Squibb, Novartis and AstraZeneca. Emerging players are Kardigan, Lexeo Therapeutics and Imbria Pharmaceuticals.

Does MyoKardia have an API?

No public API is recorded for MyoKardia.

What industry is MyoKardia in?

MyoKardia's product category is Cardiovascular Biopharmaceuticals. Its primary akta.pro industry code is HLAIAIAH, Rare Cardiovascular & Vascular Disorder Therapies, with a secondary code of HLAIACAG, Cardiology & Vascular Specialty Pharmaceuticals. Its NAICS code is 325414 and its SIC code is 2833.

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Live signals
Investing.comCytokinetics EVP Fady Malik sells $239k in company stock By Investing.comCytokinetics EVP Fady Malik sold 3,500 shares at $68.29 each on September 22, 2026, and exercised options for 3,500 shares at $7.80. The company reported Q2 Myqorzo sales of $25.3 million, beating estimates by 65.2%, and filed a patent lawsuit against Bristol-Myers Squibb and MyoKardia.Investing.comCytokinetics director Robert Landry sells $74,660 in shares By Investing.comCytokinetics director Robert Landry sold 1,000 shares on September 11, 2026, for $74,660. The company reported Q2 Myqorzo sales of $25.3 million, beating estimates by 65.2%, and filed a patent lawsuit against Bristol-Myers Squibb and MyoKardia. Analysts maintain Buy/Overweight ratings with price targets up to $140.Investing.comCytokinetics director Robert Landry sells $74,660 in shares By Investing.comCytokinetics director Robert Landry sold 1,000 shares on September 11, 2026, for $74,660. The company reported Q2 Myqorzo sales of $25.3 million, beating estimates by 65.2%, and filed a patent lawsuit against Bristol-Myers Squibb and MyoKardia. Analysts have raised price targets, with Barclays at $110 and Truist at $112.Law360Bristol Myers Sues Generics Cos. Over Planned Cardiac DrugBristol Myers Squibb and MyoKardia filed patent infringement suits in the U.S. District Court for the District of Delaware against multiple generic pharmaceutical companies, including MSN Laboratories and Dr. Reddy's Laboratories, targeting their planned generic versions of the cardiac drug Camzyos.openPR.comHypertrophic Cardiomyopathy Pipeline 2026: MOA and ROA Insights, Clinical Trials Status, and Key Companies Involved by DelveInsight | Tenaya Therapeutics, Shandong Suncadia Medicine, MyoKardiaDelveInsight released a 2026 pipeline report on hypertrophic cardiomyopathy (HCM) treatments, cataloguing over 10 companies developing more than 10 therapies across various clinical trial phases. The report highlights that Bristol-Myers Squibb's Phase III ODYSSEY-HCM trial for Camzyos (mavacamten) failed to meet its two primary endpoints in April 2025, while Tenaya Therapeutics reported positive interim findings from its Phase Ib/2 MYPEAK-1 trial for gene therapy TN-201, and Edgewise Therapeutics announced favorable top-line data for EDG-7500 in September 2024.Harvard GazetteThe First Precision Medicine for a Genetic Heart DiseaseBristol Myers Squibb has brought mavacamten (Camzyos) to market as the first FDA-approved precision treatment for hypertrophic cardiomyopathy, following its acquisition of MyoKardia in 2020. The drug targets cardiac myosin to improve heart function and symptoms for patients with obstructive HCM, a development rooted in foundational genetic research by Harvard Medical School professors Kricket and Jonathan Seidman. This approval expands treatment options beyond previous management strategies like beta blockers and surgery.BenzingaBristol Myers Acquired MyoKardia Drops Fulcrum Agreement, Ending Cardiomyopathy Research Deal - Fulcrum TMyoKardia, a company acquired by Bristol Myers Squibb in 2020, has terminated its collaboration and license agreement with Fulcrum Therapeutics for the discovery and development of targeted therapies for genetic cardiomyopathies. The termination, which was received by Fulcrum as written notice, will become effective on June 26, 2025, ending a partnership that included an upfront payment of $10 million, prepaid research funding of $2.5 million, and potential milestone payments of up to $298.5 million per target. Fulcrum had achieved a $2.5 million specified preclinical milestone under the agreement before the termination was initiated.PR NewswireAvidity Advances RNA Programs and Expands into New Therapeutic Areas Utilizing its AOC™ PlatformAvidity Biosciences announced the expansion of its internal discovery pipeline with new preclinical programs in skeletal muscle and cardiology using its proprietary Antibody Oligonucleotide Conjugates (AOCs) platform technology. The company is currently advancing three Phase 1/2 clinical programs for rare diseases: AOC 1001 for myotonic dystrophy type 1, AOC 1020 for facioscapulohumeral muscular dystrophy, and AOC 1044 for Duchenne muscular dystrophy. Avidity also continues its collaborations with Eli Lilly for immunology indications and with MyoKardia (a Bristol Myers Squibb subsidiary) for cardiac tissue applications.PR NewswireHypertrophic Cardiomyopathy Market to be Driven by the Emergence of Novel Pharmacotherapies & Gene-directed Approaches at a 22.24% CAGR During the Study Period [2018-2030], States DelveInsightDelveInsight's Hypertrophic Cardiomyopathy market report indicates the market is projected to grow at a 22.24% CAGR during 2018–2030, driven by novel pharmacotherapies including cardiac myosin inhibitors from major pharmaceutical companies. Key developments include Bristol Myers Squibb's acquisition of MyoKardia for USD 13.1 billion, FDA acceptance of its Mavacamten NDA with a January 2022 PDUFA goal date, and Cytokinetics receiving FDA Orphan Drug Designation for CK-3773274. The report identifies significant unmet needs including underdiagnosis, knowledge gaps, and limitations of current therapies, while noting barriers such as a lack of randomized controlled trials and the need for novel trial designs.PR NewswireSHAREHOLDER ALERT: WeissLaw LLP Reminds MYOK, PTI, BMCH and GHIV Shareholders About Its Ongoing InvestigationsWeissLaw LLP announced ongoing investigations into four separate corporate transactions for potential breaches of fiduciary duty: Bristol-Myers Squibb Company's proposed $13.5 billion acquisition of MyoKardia for $225 per share in cash; Proteostasis Therapeutics' stock-for-stock merger with Yumanity Therapeutics that would leave existing PTI shareholders with only 32.5% ownership of the combined entity; Builders FirstSource's proposed acquisition of BMC Stock Holdings valued at approximately $39.39 per share; and Gores Holdings IV's reverse merger with privately-held United Wholesale Mortgage valued at approximately $16.1 billion. The law firm is reaching out to shareholders of all four companies to discuss their rights and potential legal claims.