| # | Company | Employees |
|---|---|---|
| 1 | 164,418 | |
| 2 |
Robert Halfroberthalf.com
Connecting skilled professionals with companies through contract, temporary, and permanent placements in finance, technology, marketing, legal, and administrative sectors. |
26,429 |
| 3 |
Protivitiprotiviti.com
Global consulting firm offering expertise in finance, technology, operations, data, digital, legal, HR, risk, and internal audit to help clients navigate future challenges |
13,479 |
| 4 |
Genesysgenesys.com
It provides an AI-powered platform for organizations to enhance customer and employee experiences, driving loyalty, engagement, and operational efficiency. |
8,573 |
| 5 |
WhatsAppwhatsapp.com
It provides a reliable messaging service for over 1.5 billion users globally, enabling communication and sharing across various devices and locations. |
5,294 |
| 6 |
Robert Half Finance & Accountingroberthalf.com
Specialized financial recruitment service with experienced recruiters connecting skilled accounting and finance professionals with leading companies worldwide |
4,940 |
| 7 |
Robinhoodrobinhood.com
This company aims to make financial markets accessible to all by offering intuitive and affordable trading options, empowering everyone to participate |
4,834 |
| 8 |
PodCast-> The Brutal Truth about Sales & Selling PodCast - on all your favorite PodCast Playersb2brevenue.com
A B2B Sales company offering a podcast on iTunes and Stitcher, as well as free resources on b2bREVENUEcom and YouTube channels |
4,378 |
| 9 |
Accountempsroberthalf.com
Specialized temporary staffing firm for accounting, finance, and bookkeeping professionals, providing exceptional service to skilled professionals and leading companies worldwide |
3,544 |
| 10 |
Confidencial.ioconfidencial.io
Development of patented AI and encryption technologies for automatic identification, classification, and protection of sensitive data in regulated industries. |
3,195 |
| 11 | 2,968 | |
| 12 |
Course Herocoursehero.com
Online learning platform with study resources for all subjects, created by students, educators, and experts Support student learning for academic success |
2,335 |
| 13 |
SLAC National Accelerator Laboratorywww6.slac.stanford.edu
A diverse workforce of 1,700 employees at the forefront of cutting-edge research in various disciplines, collaborating in a stimulating environment |
2,235 |
| 14 |
Robert Half Management Resourcesroberthalf.com
A leading provider of senior financial and business systems professionals for interim roles worldwide, specializing in finance, IT, audit, and more |
2,125 |
| 15 |
Exponentexponent.com
A premium engineering and scientific consulting firm offering multidisciplinary expertise to solve complex challenges and innovate for a safer, sustainable world |
1,755 |
| 16 |
KATERRAkaterra.com
Innovative company transforming construction through technology to create smarter buildings and better communities on a massive scale |
1,330 |
| 17 |
Robert Half Legalroberthalf.com
Legal staffing division providing highly skilled legal professionals on a project or full-time basis to law firms and corporate legal departments globally |
1,298 |
| 18 |
Samsung Strategy and Innovation Center
A technology innovation center fostering disruptive technologies, investing in startups, and expanding business lines through partnerships and acquisitions |
1,283 |
| 19 | 1,138 | |
| 20 |
The Creative Grouproberthalf.com
Specializes in placing skilled professionals in interactive, design, marketing, advertising, and public relations roles on project, temporary-to-hire, and full-time basis Offices in US and Canada |
1,131 |
| 21 | 1,105 | |
| 22 |
AI at Metaai.meta.com
Advancing AI through open science and collaboration, focusing on infrastructure, NLP, generative AI, vision, and human-computer interaction. |
1,101 |
| 23 |
WelbeHealthwelbehealth.com
WelbeHealth offers comprehensive care for seniors, including medical, coordination, home care, dental, therapy, transport, prescriptions, social activities, and meals, with a focus on empowering vulnerable individuals |
1,069 |
| 24 |
Andreessen Horowitza16z.com
Venture capital firm investing in seed to late-stage technology companies across various sectors, providing access to expertise and resources for business growth |
993 |
| 25 |
Molocomoloco.com
Machine learning platform providing performance advertising, commerce media solutions, and streaming monetization through first-party data to scale user acquisition and revenue for businesses. |
958 |
| 26 |
BillionToOnebilliontoone.com
A precision diagnostics company using a proprietary platform to accurately count DNA molecules for improved disease detection |
815 |
| 27 |
Twin Healthtwinhealth.com
The company combines medical science and digital twin technology to personalize care for chronic metabolic diseases through individualized guidance and support |
755 |
| 28 |
ShanDa Interactive Entertainment Ltd.shanda.com
A leading interactive entertainment company in China, offering popular online games, e-sports, cartoons, literary works, music, and private investments |
726 |
| 29 |
Rudolph and Slettenlinktr.ee
West Coast general building contractor with a focus on transparency, collaboration, and attention to detail, specializing in various project types |
661 |
| 30 |
Hello Hearthelloheart.com
Utilizing technology and behavioral science, we empower individuals to improve their heart health with a digital coaching app and connected blood pressure monitor |
659 |
| 31 | 588 | |
| 32 | 564 | |
| 33 |
Lightspeedlsvp.com
A multi-stage venture capital firm investing in disruptive innovations across Enterprise, Consumer, Health, and Fintech sectors globally with a $18B managed platform |
545 |
| 34 |
Rosewood Sand Hillpublish-p139159-e1417131.adobeaemcloud.com
Luxurious five-star hotel in Menlo Park offering resort-like amenities, spa services, fine dining, and stunning Bay Area views |
540 |
| 35 |
Mainspring Energymainspringenergy.com
Innovative company developing linear generators for onsite power generation to support the transition to a net-zero carbon grid Visit their website for more |
517 |
| 36 | 457 | |
| 37 |
instagramreelsinstagramreels
A platform for sharing Instagram reels and videos featuring Indian actors and actresses, with a focus on viral content |
416 |
| 38 |
NOVO Construction, Inc.novoconstruction.com
NOVO Construction prioritizes quality work, service, and relationships to build long-term, loyal customer connections through commitment, innovation, and teamwork |
414 |
| 39 | 409 | |
| 40 | 395 | |
| 41 |
City of Menlo Parkmenlopark.gov
The company is located in Menlo Park, a city known for its vibrant community, top-rated schools, proximity to major urban areas, and its role in the tech industry |
351 |
| 42 |
Sequoia Capitalsequoiacap.com
Sequoia partners with visionary founders to build enduring businesses, providing hands-on help from idea to IPO with expertise from legendary founders |
344 |
| 43 |
Silver Lakesilverlake.com
Global technology investment firm managing over $110 billion in assets, supporting portfolio companies generating $260 billion revenue annually. |
341 |
| 44 |
JobTrain, Inc.jobtrainworks.org
A nonprofit organization in Silicon Valley helps individuals in need escape poverty by providing vocational training, support services, and resources |
339 |
| 45 |
Orca Bioorcabio.com
A clinical-stage biotechnology innovating high precision cell therapies to replace diseased blood and immune systems with healthy ones |
336 |
| 46 |
Boys & Girls Clubs of the Peninsulabgcp.org
Empowering 5,400 students with academic programs, enrichment activities, and mental health services to ensure equal opportunities for success |
325 |
| 47 |
Notable Capitalnotablecap.com
Notable Capital is a US-based venture capital firm investing in early-to-growth-stage companies in cloud infrastructure and business/consumer applications worldwide |
314 |
| 48 |
Quickenquicken.com
Leading personal finance software company focused on helping over 20 million customers improve their financial lives through innovative products and exceptional customer service |
305 |
| 49 |
Accel-KKRaccel-kkr.com
Technology-focused investment firm with $19 billion in capital commitments, specializing in software and IT enabled businesses through strategic partnerships and value-building investments in middle-market companies |
301 |
| 50 |
DCM Venturesdcm.com
A venture capital firm with over $4 billion invested in 300+ technology companies in the US and Asia, providing operational guidance and global resources |
283 |
| 51 | 264 | |
| 52 | 249 | |
| 53 |
New Enterprise Associates (NEA)nea.com
Global venture capital firm investing in technology and healthcare companies across all stages, supporting entrepreneurs worldwide with significant assets. |
239 |
| 54 |
Kleiner Perkinskleinerperkins.com
Venture capital firm with a history of investing in innovative technology and life sciences companies, supporting founders with bold ideas |
239 |
| 55 |
Norwestnorwest.com
Investment firm supporting entrepreneurs with capital, expertise, and resources across consumer, enterprise, and healthcare sectors globally. |
238 |
| 56 |
Sight Sciencessightsciences.com
The company is revolutionizing eyecare by developing innovative and minimally invasive therapies to preserve, protect, or restore natural eye function |
232 |
| 57 |
Khosla Ventureskhoslaventures.com
Invests in early-stage, impactful companies across AI, climate, enterprise, consumer, fintech, digital health, medtech, diagnostics, therapeutics, and frontier technology sectors. |
224 |
| 58 |
Betterworksbetterworks.com
An intelligent performance management solution empowering individuals to achieve their highest potential |
220 |
| 59 |
Mongabaynews.mongabay.com
This company publishes news and information on tropical forests, wildlife, and conservation issues, examining the impact of climate, technology, economics, and finance |
204 |
| 60 |
Sapphire Venturessapphireventures.com
Global venture capital firm with $11B+ in AUM, investing in visionary teams and funds to scale companies, resulting in public listings and acquisitions |
198 |
| 61 |
techjaystechjays.com
Innovative company focused on providing top software services, specializing in AI, products, and apps to help clients thrive |
188 |
| 62 |
Blockstreamblockstream.com
The company creates crypto-financial infrastructure using Bitcoin, enhancing financial markets with cutting-edge cryptography, security, and peer-to-peer networks |
181 |
| 63 |
AccuKnoxaccuknox.com
Provides a Zero Trust Security platform for AI, API, Application, Cloud, and Supply Chain Security, incubated from SRI International. |
180 |
| 64 |
TIZETItizeti.com
An infrastructure company in Africa providing solar-powered towers for wider internet access, specializing in unlimited internet services and VoIP solutions |
180 |
| 65 |
Coffeebarcoffeebar.com
A community-focused cafรฉ that serves high quality, sustainably sourced coffee, food, and wine, with a passionate team dedicated to positive change and exceptional hospitality |
178 |
| 66 |
Oigetit Real-Time AI Intelligence Platformoigetit.ai
Platform delivers real-time fact-checking, sentiment analysis, and narrative intelligence in 76 languages for governments, corporations, and media organizations, detecting misinformation and assessing risk. |
173 |
| 67 |
CK-12 Foundationck12.org
CK-12 Foundation provides free educational resources and technology tools, including AI-powered tutoring, to empower students and teachers worldwide |
173 |
| 68 |
Synthegosynthego.com
A genome engineering company leveraging machine learning and gene editing to advance life science research for improved human health Celebrating diversity and innovation |
170 |
| 69 |
Pantera Capitalpanteracapital.com
Specializing in cryptocurrency and blockchain investments, the firm offers institutional funds focused on digital currencies, blockchain technology, and early-stage token opportunities |
168 |
| 70 |
Factoryfactoryhq.ai
Venture capital fund specializing in early-stage AI investments, leveraging academic research and industry expertise to build startups shaping the AI landscape |
168 |
| 71 |
Si-Ware Systemssi-ware.com
Development of integrated sensing technologies combining MEMS, optics, AI, and software to create scalable, ready-to-deploy physical-digital solutions. |
163 |
| 72 | 159 | |
| 73 |
RedSeal, Inc.redseal.net
Helps organizations see, understand, and secure hybrid digital environments, modeling the environment, uncovering exposures, prioritizing risks, and validating compliance. |
158 |
| 74 |
LeoLabsleolabs.space
Dedicated to protecting satellites in low Earth orbit. Builds and operates radars to track satellites and threatening debris for responsible stewardship. |
151 |
| 75 |
BGVbenhamouglobalventures.com
Investment platform supporting startups globally with AI-driven automation, operational expertise, and cross-border venture capital for transformative growth. |
151 |
| 76 |
Jasper Ridge Partners, L.P.jasperridge.com
The company provides investment management services across various asset classes to families, foundations, and institutions, offering customized solutions |
149 |
| 77 |
Shanda Groupshanda.com
A private investment firm founded in 1999, with a focus on venture capital, public market investments, real estate, and philanthropy in brain research |
147 |
| 78 |
Greylockgreylock.com
First partner for founders; invests early, pre-seed, seed, or series A in AI-first, disruptive enterprise and consumer software companies. |
140 |
| 79 |
STG โ Symphony Technology Groupstg.com
Private equity firm investing in innovative software and tech services companies, providing capital and expertise for transformation, value creation, and business performance improvement |
128 |
| 80 |
GoAhead Venturesgoaheadvc.com
Venture Capital fund in Silicon Valley with $175M AUM focusing on early-stage startups Streamlined process for global founders to pitch for rapid decisions |
123 |
| 81 |
Menlo Venturesmenlovc.com
venture capital firm investing across sectors and stages, supporting innovative companies with strategic guidance and community building for growth |
116 |
| 82 |
GSR Venturesgsrventures.com
An early-stage venture firm specializing in investing in AI-driven companies in Healthcare, Enterprise, Consumer, and Fintech sectors with over $37 billion under management |
102 |
| 83 | 90 | |
| 84 |
Mayfieldmayfield.com
Early-stage venture capital firm with $3 billion under management, partnering with founders to build enterprise, AI-first, deeptech, and human and planetary health companies |
88 |
| 85 |
Grishin Roboticsgrishinrobotics.com
Invests in early-stage companies across online gaming, entertainment, productivity tools, food tech, digital fitness, and education, combining software innovation and tangible hardware products. |
88 |
| 86 |
Felicisfelicis.com
Investment firm supporting founders worldwide with capital and personalized growth resources, focusing on early-stage startups across various sectors. |
86 |
| 87 |
BarRaiserbarraiser.com
Provides an intelligent interview platform that enhances recruiting through AI-driven tools, real-time feedback, and video capabilities, standardizing interviews and reducing bias. |
81 |
| 88 |
Tribe Capitaltribecap.co
Venture capital firm leveraging data science to gain an edge in venture and crypto investments, with notable investments in various companies |
74 |
| 89 |
Altimeteraltimeter.com
A technology-focused investment firm supporting visionary entrepreneurs to build iconic companies, disrupt markets, and improve lives through growth stages |
56 |
| 90 |
Sofinnova Investmentssofinnova.com
A healthcare investment firm funding innovative products to impact patient lives, partnering with entrepreneurs from company formation to IPO or M&A |
51 |
| 91 |
Trinity Venturestrinityventures.com
Top-tier venture capital firm supporting start-ups with breakthrough ideas to transform markets and lives through business insight and personal engagement |
50 |
| 92 |
Stamos Capital Partners, L.P.stamoscapital.com
Independent investment management firm serving high-net-worth individuals and institutions, focusing on wealth preservation and growth through diversified global asset allocation |
49 |
| 93 |
Sequoia Global Equitiessequoiacap.com
A public/private crossover firm focusing on long-term investments in global technology, media, and telecommunications companies, spanning late-stage private to public markets |
44 |
| 94 |
Amplify Partnersamplifypartners.com
Early-stage investor supporting technical founders developing developer tools, AI, ML, data, and cybersecurity solutions for the future |
41 |
| 95 |
Threshold Venturesthreshold.vc
Venture capital firm supporting ambitious founders in the early stages of growth to achieve rapid expansion and success |
39 |
| 96 |
Unusual Venturesunusual.vc
Leads seed funding for enterprise AI software startups, providing a hands-on engagement model to help technical founders achieve product-market fit. |
38 |
| 97 |
Reconstruct Increconstructinc.com
Aligning reality on top of design to sub-inch accuracy for real estate stakeholders to track their global portfolio of structures. |
37 |
| 98 |
Longitude Capitallongitudecapital.com
Longitude Capital is a venture growth investor focusing on biotechnology, medical technology, and health solutions companies to improve clinical outcomes, quality of life, and reduce costs |
36 |
| 99 |
Orange Chargerorangecharger.com
Innovative EV charging solutions for multifamily properties, re-engineered for scalability, affordability, and simplicity, making EV charging accessible to all drivers |
34 |
| 100 |
Glynn Capitalglynncapital.com
Technology growth investment firm focused on long-term investments in excellent companies with world-class management teams and sustainable business models for long-term growth potential |
33 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
More company lists in Menlo Park
- Venture capital and private equity firms in Menlo Park 79
- Venture Capital and Private Equity Principals companies in Menlo Park 67
The same list elsewhere in United States
- The largest companies in the United States 91,669
- The largest companies in California 12,813
- The largest companies in New York State 10,485
- The largest companies in Texas 8,086
- The largest companies in Florida 4,945
- The largest companies in Illinois 4,175
- The largest companies in Pennsylvania 3,110
- The largest companies in Massachusetts 3,093
- The largest companies in Georgia 2,632
- The largest companies in Ohio 2,618
- The largest companies in New Jersey 2,569
- The largest companies in Virginia 2,503
- The largest companies in Michigan 2,346
- The largest companies in North Carolina 2,174
- The largest companies in Alabama 1,806
- The largest companies in Washington State 1,785
- The largest companies in Colorado 1,774
- The largest companies in Minnesota 1,700
- The largest companies in Maryland 1,527
- The largest companies in Wisconsin 1,482
- The largest companies in New York 6,920
- The largest companies in San Francisco 2,030
- The largest companies in Houston 1,791
- The largest companies in Chicago 1,668