Sema4 Opco, Inc.

Visa Rank: 5,635 | LCA for H-1B: 40 | LC for Green Card: 3 | Denied or withdrawn: 1

Overview

Lastest Update(6/4/25): In the first two quarters of fiscal year 2025, Sema4 Opco filed 2 LCAs for H-1B visas, no labor petitions for green cards, and no requests for prevailing wage determination.

Main Office: Stamford, CT - NAICS Industry: Health Care and Social Assistance
H-1B Dependent: No - Willfull Violator: No

Sema4 Opco, Inc. filed 40 labor condition applications (LCAs) for H-1B visas and 3 labor certifications (LCs) for green cards during fiscal years 2022 - 2024. Sema4 Opco was ranked number 5,635 among all visa sponsors. Additionally, 1 LC was denied or withdrawn during the same period.

Before Sema4 Opco can hire foreign workers, whether permanently or temporarily, it must submit labor certifications to the Department of Labor (DOL). These certifications confirm compliance with wage requirements for the specified job locations.The reports below summarize Labor Condition Applications (LCA) for H-1B visas and Labor Certifications (LC) for green cards filed by Sema4 Opco. This data represents only the number of applications submitted and does not guarantee visa approvals or worker hires.

The LCA data includes applications for various purposes: new employment, continuation or changes to previously approved employment, new concurrent employment, changes in employer, and amended petitions. Typically, only LCAs for new employment require an H-1B visa cap if the employer is not cap-exempt.For example, Sema4 Opco submitted 45 LCAs and LCs during fiscal years 2022 - 2024. However, this figure does not necessarily reflect the number of foreign workers hired, as visa applications can be denied. Additionally, employees renewing or transferring H-1B visas or changing work locations may need to file new LCAs.

The DOL generally certifies more than three times the number of foreign worker requests compared to the H-1B visas issued by USCIS. Therefore, there is no direct correlation between the number of workers certified by the DOL and the H-1B visas issued by the United States Citizenship and Immigration Services (USCIS).

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Worker Backgrounds

Overview of the backgrounds of foreign workers sponsored by Sema4 Opco for permanent employment, highlighting up to 12 categories in each field along with the number of workers. The fields include citizenship, colleges attended, degrees earned, fields of study, and visa status.

Citizenship: where they came from

Class of Admission: current visa status

H-1B(3)

Degree: Highest Education achieved

Bachelor's(2)Master's(1)
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Visas

Summary of Labor Condition Applications (LCAs) for H-1B visas and Labor Certifications (LCs) for green cards filed by Sema4 Opco. The data includes new employment, continuation or changes to previously approved employment, new concurrent employment, changes in employer, and amended petitions.

Labor Condition Applications(LCAs) for H-1B Jobs

Year Certified Denied Withdrawn Certified-Withdrawn
2023 70015
2022 18000
2021 3000

Labor Certifications(LCs) for Green Card Job

Year Certified Denied Withdrawn Certified-Withdrawn
20230010
20221001

Annual Average Salaries

H-1B and Green Card Jobs Proffered Salaries

Year H-1B Salary Green Card Salary
2024 $75,333 N/A
2023 $123,481 $133,000
2022 $103,917 $126,458
2021 $89,246 N/A

Occupations & Job Titles

Summary of the occupations and job titles of foreign workers sponsored by Sema4 Opco for permanent employment, highlighting up to 12 roles in each field along with the number of workers. To increase your chances of receiving visa sponsorship, focus on positions that Sema4 Opco has historically hired foreign workers for.

H-1B Occupations

Bioinformatics Scientists(8)Software Developers(6)Medical and Clinical Laboratory Technologists(6)Software Developers, Applications(5)Computer and Information Systems Managers(5)Statisticians(4)Molecular and Cellular Biologists(3)Natural Sciences Managers(2)Medical Scientists, Except Epidemiologists(2)Business Intelligence Analysts(2)

Green Card Occupations

Statisticians(1)Medical and Clinical Laboratory Technologists(1)Computer and Information Systems Managers(1)

H-1B Job Titles

Bioinformatics Scientist(7)Laboratory Technologist(4)Backend Software Engineer(3)Clinical Technologist(2)Business Analyst, Product Development(2)Data Scientist, Clinical Informatics(2)Data Operations Manager(2)Integration Engineer(2)Laboratory Technologist, Molecular(2)Manager, Software Quality Engineering(2)

Green Card Job Titles

Molecular Technologist Iv(1)Director, Laboratory Information Systems (Lims)(1)Decision Intelligence Manager(1)
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Contacts

The individuals listed in this section are employees of Sema4 Opco, Inc. authorized to represent the company in labor certification matters. They cannot be agents or attorneys unless they are direct employees of Sema4 Opco. Furthermore, they may not be Human Resources professionals directly involved in hiring or resume screening. In smaller companies, these representatives are often decision-makers, such as the president or operations director.

H-1B Visa Job Contacts

Sarah Hochberg - People Operations Leader [+]
333 Ludlow Street Stamford, CT

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DANIEL CLARK - General Counsel [+]
333 LUDLOW STREET STAMFORD, CT

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Green Card Job Contacts

Steffany Lemus [+]
333 Ludlow Street Stamford, CONNECTICUT

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Office Locations

Summary of the Top Locations with the Highest Number of Foreign Workers. The main office ranks as the primary worksite for foreign workers, hosting the largest number among all locations.

Main Office:333 Ludlow Street North Tower Stamford, CT 6902

H-1B Visa Job Work Sites

Stamford,CT(25) Branford,CT(5) Gaithersburg,MD(2) Tampa,FL(2) Allentown,PA(2) Brunswick,OH(2) Tarrytown,NY(2) New York,NY(2) Brooklyn,NY(1) Binghamton,NY(1)

Green Card Job Work Sites

Stamford,CT(3)

FAQs

Has Sema4 Opco sponsored H-1B Visa in the past? - [+]

Yes, during the past three years, Sema4 Opco has filed 40 LCAs for H-1B Visa positions.

Has Sema4 Opco sponsored employment based green card in the past? - [+]

Yes, during the past three years, Sema4 Opco has filed 40 LCs for employment based green card positions.

Is Sema4 Opco an H-1B dependent employer? - [+]

No, Sema4 Opco is not an employer that has a certain number of H-1B nonimmigrant workers relative to its total workforce.

What types of roles do Sema4 Opco typically sponsor for H-1B visas or green cards? - [+]

The most common roles for H-1B Visa positions are Bioinformatics Scientist(7), Laboratory Technologist(4), Backend Software Engineer(3), Clinical Technologist(2), Business Analyst, Product Development(2), Data Scientist, Clinical Informatics(2). The most common roles for green card positions are Molecular Technologist Iv(1), Director, Laboratory Information Systems (Lims)(1), Decision Intelligence Manager(1).

Reviews

Number of Reviews: 4 - Average Review Score: 4.5 -

Rate and Review Sema4 Opco, Inc.



★★★★★ - - - - 7/14/2025 - flag as inappropriate - comment
Things I like: Training and Professional Development, Reasonal Green Card Sponsorship Policy, Competitive Salary
Things I don't like: Insufficient Health Benefits, Limited Career Advancement Opportunities, Unsupportive or Toxic Management




★★★★★ - - - - 5/5/2025 - flag as inappropriate - comment
Things I like: Employee Recognition and Appreciation, Training and Professional Development, Competitive Salary
Things I don't like: Workplace Discrimination or Lack of Diversity, Lack of Teamwork or Collaboration, Poor Immigration Support




★★★☆☆ - - - - 3/12/2025 - flag as inappropriate - comment
Things I like: Clear Company Vision and Leadership, Job Security and Stability, Good Work Culture and Team Bonding Activities
Things I don't like: Poor Communication from Management, Insufficient Health Benefits, No Training or Development Opportunities





★★★★★ - - - - 3/2/2025 - flag as inappropriate - comment
Things I like: Employee Recognition and Appreciation, Comprehensive Health Benefits, Performance-Based Bonuses or Incentives
Things I don't like: Unclear Company Direction or Leadership Issues, Negative or Toxic Work Culture, Lack of Teamwork or Collaboration

You are welcome to share your working, interview or application experience with Sema4 Opco, Inc. as well as its owners or employees. Please avoid mentioning any names or using profanity and obscene languages when you are making comments.

Many of the reviews about H1B visa and green card sponsors on our web site are negative. Though this somewhat reflects one aspect of real immigrant labor market, you should do more research and use your own judgment to make decisions. Please be also aware that some reviews and comments were submitted by employers, competitors or disgruntled employee of Sema4 Opco, Inc..

Under federal law (Section 230 of the Communications Decency Act) MyVisaJobs.com is not legally responsible for the information posted by the third parties, even if the posted information contains remarks that are defamatory. If you find any review about Sema4 Opco, Inc. is inappropriate, please use the Flag As Inappropriate link next to the review to report.

If you find an employer has violated any proceeding under the Immigration and Nationality Act (INA) or it has committed either a willful failure or a misrepresentation of a material fact of the Labor Condition Application (LCA) attestations, please do not post your review here. You should contact Dept of Labor, Dept of Justice or U.S. Immigration and Customs Enforcement (ICE).

For additional information, visit DOL Wage and Hour Division Website: http://www.wagehour.dol.gov and/or call their toll-free information and helpline, available 8 a.m. to 5 p.m. in your time zone, 1-866-4USWAGE (1-866-487-9243).
Employer: Sema4 Opco
Review Result: 4.5 out of 5 stars 4 votes

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