Fundraising Fox
S28 Capital
Venture capitalSan Francisco · Pre-Seed–Series B · 5 people tracked
Also known as 28 Capital · S28 CAPITAL LLC
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Investment thesis
S28 Capital is built by people who have been entrepreneurs and operators themselves, positioning the firm as the kind of partner they wished they had while building their own companies. The team emphasizes hands-on support for founders through every stage, acknowledging that founders do the hard work while the firm provides help wherever possible. Drawing on experience hiring thousands of employees, raising over $200M in venture capital, generating more than $2B in enterprise value, scaling internationally, and building both consumer and enterprise startups, the firm brings an operator's perspective and a diverse, immigrant background to backing today's entrepreneurs.
Source: firm website, verified Sep 29, 2026.
Team · 5 people
from the firm's website & curated & public directoriesFounder mafia
3 people who came through S28 Capital went on to found or lead other companies.
What they invest in
from 28 of 29 portfolio companiesEnterprise Software ×18Developer Tools ×13SaaS ×12AI & Machine Learning ×10Cloud Computing ×5Cybersecurity ×5Data & Infrastructure ×5Future of Work ×5
HQs:United States×20Canada×1Colombia×1United Kingdom×1India×1Singapore×1
Investments · 29 tracked
founders shown can be your intro pathBy year:2026 · 22023 · 12022 · 52021 · 22019 · 42017 · 115 dated
PagerDuty provides a platform for incident response and operations management that enables teams across technical and business functions to respond to critical events in real time.
AI & Machine LearningCloud ComputingDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US
Alex Solomon(Founder/CTO)inDan Alexandru Solomon(Director)Jennifer Tejada(Executive Chair)inSteven Gatoff(Executive Officer)inJohn DiLullo(Chief Executive Officer)in
BoardJohn O'Farrell(Director)in
Board seatAndrew Miklas· per SEC Form D · $90M raise · filed Sep 2018
Co-investorsAccelAndreessen HorowitzAurumBaseline VenturesBessemer Venture PartnersBling Capital+17 more
Eden provides an all-in-one workplace experience platform that helps companies manage hybrid and office operations through integrated HR, people operations, and workplace software.
Enterprise SoftwareFuture of WorkHR TechSaaSSan Francisco, US
Joe Du Bey(Founder/CEO)inGuy Morita(Founder)inKyle Wilkinson(Founder/CTO)in
Co-investorsY CombinatorBessemer Venture PartnersAlate PartnersComcast VenturesFundersClubGlobal Brain+26 more
Lightup provides enterprise data observability software that monitors and validates production data pipelines using AI-powered anomaly detection.
AI & Machine LearningData & InfrastructureEnterprise Software
Co-investorsAndreessen HorowitzVela PartnersIncubate FundShasta VenturesIncubate USGTMfund
CaptivateIQ provides a modern platform for automating commission and compensation management, helping companies align incentives with revenue outcomes.
AI & Machine LearningEnterprise SoftwareFintechSaaSSales TechSan Francisco, US
Mark Schopmeyer(Founder)inHubert Wong(Founder)inConway Teng(Founder)in
Co-investorsAccelICONIQWorkday Ventures515 VenturesAmity VenturesBessemer Venture Partners+10 more
Clerk provides user management and authentication infrastructure for developers, enabling quick integration of complete user management systems into applications.
CybersecurityDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US
Braden Sidoti(Founder)inColin Sidoti(Founder)inJames Perkins(Founder)
BoardShvetank Jain(Director)Karan Mehandru(Director)in
Co-investorsAndreessen HorowitzCRV (Charles River Ventures)Madrona Venture GroupMango CapitalMaximilian StoiberMenlo Ventures+6 more
CodeStream built a developer collaboration tool that brought code discussion, review, and issue tracking directly into the IDE, integrating with editors like VS Code and JetBrains.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareSaaSNew York City, US
Claudio Pinkus(Founder)in
Co-investorsBrightstone Venture CapitalPJCY Combinator342 CapitalCTC VenturesCypher Capital+3 more
Platform for controlling and managing robotic systems
San Francisco, US
Joshua Wilson(Executive Officer, Director)Dimitri Onistsuk(Executive Officer)Hans Lee(Executive Officer)
Co-investorsGreen Cow Venture CapitalInitialized CapitalLiquid Ventures
Great Question is a UX research platform that combines participant recruitment, study management, mixed-method research capabilities, and AI-powered analysis in a single system.
Developer ToolsEnterprise SoftwareMarketing TechSaaSSan Francisco, US
Ned Dwyer(Founder / CEO)inPJ Murray(Founder)in
Co-investorsFundersClubImmeasurableInovia CapitalNOMO VenturesY CombinatorAmplify.LA+18 more
Landed provides housing loan program administration and management for hospitals and colleges, enabling employers to co-invest with employees for down payment assistance while managing compliance and program operations.
FintechHR TechPropTechSan Francisco, US
Jonathan Asmis(Founder)inAlex Lofton(Founder)inJesse Vaughan(Cofounder)inVivian Wang(Founder)in
Co-investorsAAF Management Ltd.MassMutual VenturesMission and MarketUlu VenturesY CombinatorBlockchain Capital+14 more
Mattermost is a secure team collaboration platform designed to complement Microsoft Teams and Microsoft 365, providing on-premises or private cloud deployment with advanced customization, data control, and integration capabilities for mission-critical and highly regulated environments.
Cloud ComputingCybersecurityDeveloper ToolsEnterprise SoftwareFuture of WorkSan Francisco, US
Ian Tien(CEO & Co-Founder, Mattermost, Inc.)inCorey Hulen(CEO, Mattermost Federal, Inc. & Co-Founder, Mattermost, Inc.)in
BoardAli Rowghani(Director)Tomasz Tunguz(Director)inShvetank Jain(Director)
Co-investorsBattery VenturesFlexcap VenturesRedpoint VenturesY CombinatorHNVRSv Tech Ventures, Inc.+1 more
Memfault provides an embedded observability platform for teams building IoT and edge devices, offering crash reporting, cloud-based software delivery, and performance monitoring.
Cloud ComputingData & InfrastructureDeveloper ToolsEnterprise SoftwareHardwareIoTSaaSSan Francisco, US
François Baldassari(Founder)inChristopher Coleman(Founder)inTyler Hoffman(Founder)in
Co-investorsBragiel BrothersPartech VenturesStripesUncork CapitalY CombinatorCloud City Rolling+7 more
Menten AI develops generative AI software to design cyclic peptide therapeutics for drug targets beyond the reach of conventional small molecules and biologics.
AI & Machine LearningBiotechDeep TechHealthtechSan Francisco, US
Tamas Gorbe(Founder)inHans Melo(Founder)in
Co-investorsY CombinatorKhosla VenturesUncork CapitalAlumni VenturesBasecamp Fundbig_bets+6 more
Mirror AI creates personalized emoji sets from facial photos, generating dozens of custom emoji characters that users can share across messaging and social media platforms.
ConsumerSocialSan Francisco, US
Evgeny Kuryshev(Founder)in
Co-investorsSoma CapitalY CombinatorAcequia Capital (AceCap)Berggruen HoldingsBold Capital PartnersConnect Ventures+15 more
OctiFi offers interest-free installment loans for Southeast Asian consumers buying furniture and home goods online.
FintechSingapore, SG
Ed Chin(Founder)inAmit Kumar(Founder)in
Co-investorsVentureSouqY CombinatorGlobal Founders CapitalHack VCLYVCNielsen Investments LP+1 more
OpsLevel provides an internal developer portal with out-of-the-box integrations and automation, plus customization options for engineering teams.
Developer ToolsEnterprise SoftwareSaaSToronto, CA
Kenneth Rose(Founder)in
Co-investorsThreshold VenturesVertex VenturesWebb Investment NetworkPear VCVertex Ventures Sea Management Pte. Ltd.
Panther is an AI-powered SOC (security operations center) platform that ingests and normalizes security logs at scale, lets teams write detection rules in Python or via natural language, and uses agents to triage alerts, run investigations, and hunt threats.
AI & Machine LearningCybersecurityData & Infrastructure
Jack Naglieri(Founder & CEO)in
Co-investorsCoatue ManagementICONIQLightspeed Venture PartnersSampac Tech FundVibe CapitalICONIQ Capital+3 more
PatientBank provides a platform for patients to collect and distribute their medical records from multiple healthcare providers in one place.
HealthtechNew York City, US
Feridun Mert Celebi(Founder/CTO)in
Co-investorsY CombinatorFour CitiesGeneral CatalystKhosla VenturesSV Angel
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Plato was a community platform for engineering leaders and mentors, providing mentorship programs, leadership conferences, and networking events.
Enterprise SoftwareFuture of WorkSaaSSan Francisco, US
Quang Hoang(Founder/CEO)inJean-Baptiste Coger(Founder/CPO)in
Co-investors2.12 AngelsBeaconsfield CapitalFundersClubMerus CapitalPartech VenturesY Combinator+15 more
Precede Biosciences develops a blood-based diagnostic platform that profiles gene expression from cell-free DNA to reveal disease biology at the transcriptional level for drug developers and clinical trials.
AI & Machine LearningBiotechDigital HealthBoston, US
Rehan Verjee(Co-Founder, Chief Executive Officer, Board Director)inSylvan Baca(Co-Founder; Assistant Professor of Medicine, Dana-Farber Cancer Institute)inToni Choueiri(Co-Founder; Director, Lank Center for GU Oncology, Dana-Farber Cancer Institute)Matthew Freedman(Co-Founder; Professor of Medicine, Dana-Farber Cancer Institute)
Co-investors5AM VenturesIllumina VenturesOUP (Osage University Partners)AlexandriaLilly Asia VenturesOsage University Partners
Rippling is a workforce management platform that unifies HR, IT, finance, and employee data across a business.
Enterprise SoftwareFuture of WorkHR TechSaaSSan Francisco, US
Parker Conrad(Co-Founder and CEO)inPrasanna Sankar(Co-founder & CTO)in
Co-investors1435 CapitalAbstract VenturesAmino CapitalAnsa CapitalBain Capital Tech OpportunitiesBedrock+65 more
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RudderStack provides real-time event data transformation, letting engineering and data teams modify, clean, enrich, and govern event data in flight using JavaScript or Python before it reaches downstream tools.
AI & Machine LearningData & InfrastructureDeveloper ToolsMarketing Tech
Co-investorsInsight PartnersKleiner PerkinsUncorrelated Ventures468 Capital
Seawise Capital provides working capital financing to small and medium-sized Indian exporters by purchasing their invoices from overseas customers without requiring collateral.
FintechNew Delhi, IN
Kunal Rajvanshi(Founder)inVidur Jain(Founder)inManish Pal(Founder)in
Co-investorsSoma CapitalUtopian VenturesY CombinatorGlobal Founders CapitalOurCrowdS2 Capital
Slapdash builds a command bar interface that aggregates cloud applications and provides low-latency file-system access to accelerate workflows for knowledge workers.
Developer ToolsEnterprise SoftwareFuture of WorkSan Francisco, US
Ivan Kanevski(Founder/CEO)inDmitry Koterov(Founder)in
Co-investorsCervinY CombinatorCERVIN VENTURESQuiet CapitalTwenty Two VenturesUP2398
Social Construct Co. builds interfaces, internal tools, and systems for teams, with focus on how information flows between data, logic, and people.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareHardwarePropTechSan Francisco, US
Ben Huh(Founder/CEO)inDae Young Huh(Executive Officer, Director)Michael Yarne(Director)
BoardAnn Miura-Ko(Director)in
Co-investorsY CombinatorAME Cloud VenturesBronze InvestmentsEmerson Collective InvestingFelicis VenturesFloodgate+6 more
Teleport is an infrastructure identity platform that modernizes identity, access, and policy for computing environments.
CybersecurityData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US
Ev Kontsevoy(Co-founder and CEO)inAlexander Klizhentas(Co-founder and CTO)Taylor Wakefield(Co-founder and COO)in
Co-investors137 VenturesBessemer Venture PartnersChemistryCisco InvestmentsKleiner PerkinsY Combinator+15 more
Teleport Media provides a peer-to-peer content delivery network for OTT video streaming platforms, enabling them to scale video delivery to unlimited concurrent viewers while reducing costs and protecting against piracy.
Cloud ComputingMedia & Entertainment
Andrei Klimenko(Founder)in
Co-investorsBlockchain Valley Ventures, LlcBessemer Venture PartnersInsight PartnersKleiner Perkins
Tenzo provides data analytics and business intelligence software for restaurant operators to monitor performance and optimize operations.
Cloud ComputingDeveloper ToolsEnterprise SoftwareFoodTechRetail TechSaaSLondon, GB
Christian Mouysset(Co-founder & CEO)Adam Taylor(Co-founder & CTO)in
Co-investorsAmadeus Capital PartnersTechstars
Termius builds a modern SSH client and terminal application for engineers, replacing legacy tools with improved productivity and collaboration features.
CybersecurityDeveloper ToolsEnterprise SoftwareUnited States, US
Roman Kudiyarov(Founder/CEO of Termius)inDmitry Lyfar(Founder)in
Co-investorsInitialized CapitalY CombinatorLiquid Ventures
UBITS is a modular AI-powered HR platform that helps organizations recruit, train, and develop their teams across Latin America.
AI & Machine LearningEdTechEnterprise SoftwareHR TechSaaSBogotá, CO
Julián Melo(Founder)in
Co-investors0BSAmador HoldingsC3 VenturesCapria VenturesCathexis VenturesMagma Partners+13 more
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.
Exits · 9
1 IPOs · 8 acquisitions · showing 2PagerDutyNYSE: PDCodeStreamacq. by New Relic
Portfolio news
latest coverage across their companies
Panther Labs · multiples.vc · Sep 18, 2026
PagerDuty · en.wikipedia.org · Sep 8, 2026
Clerk · trysignalbase.com · Oct 17, 2025
Rippling · techcrunch.com · May 9, 2025
Frequently asked questions
- How many investments has S28 Capital made?
- S28 Capital has 29 tracked investments, 9 of which have exited, including 2 dated in the last 24 months.
- What stage does S28 Capital invest at?
- S28 Capital invests at the Pre-Seed, Seed, Series A, Series B stages.
- What is S28 Capital's typical check size?
- S28 Capital typically writes checks of $1M – $5M.
- What sectors does S28 Capital focus on?
- S28 Capital focuses on Consumer, Enterprise Software, Sector Agnostic.
- Where is S28 Capital located?
- S28 Capital is headquartered in San Francisco, US.
- Does S28 Capital lead rounds?
- Yes, S28 Capital leads investment rounds.
Images
Co-investors · 52
Andreessen Horowitz (a16z) is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz, known for pioneering the platform model with a large team of operators supporting founders across stages.
FundersClub is an online venture capital firm and startup investing platform that gives accredited members access to a curated selection of vetted early-stage startups, funding fewer than 2% of the companies it reviews.
Sequoia Capital is a venture capital firm that partners with founders to build technology companies.
Lightspeed Venture Partners is a global venture capital firm that backs founders from Seed through Series F and beyond, emphasizing deep, immersive partnerships with the companies it invests in.
Accel is a venture capital firm that partners with exceptional teams, positioning itself as a first partner to founders globally.
Soma Capital is a venture capital firm that backs founders building category-defining technology companies, emphasizing close, early relationships with ambitious entrepreneurs.
Founders Fund is a venture capital firm that backs technology companies building transformative products.
Since 1999, Redpoint Ventures has partnered with visionary founders to create new markets and redefine existing ones. The firm invests early in startups building category-defining companies, from AI and infrastructure to security. Redpoint has backed hundreds of companies, including Netflix, Snowflake, Stripe, Ramp, Twilio, Ramp, and Hims, and today backs the next generation of AI leaders like OpenAI, Legora, Modal, Abridge and Physical Intelligence. Redpoint is based in San Francisco and has offices in New York City and Woodside. For more information visit: http://www.redpoint.com/
Uncork Capital is a seed-stage venture firm that backs early founders, with a focus on AI-native companies driving scale and industry change.
Insight Partners is an investment firm focused on accelerating revenue and profit growth in software companies, providing capital and operational support through its Insight Onsite team.
Eniac Ventures is an early-stage venture capital firm run by former startup operators that partners closely with founders from 0 to 1 to accelerate product-market fit.
Partech is a global venture capital firm supporting founders across multiple continents and investment stages through dedicated teams and funds.
▶40 more co-investors
Threshold VenturesWebb Investment NetworkB Capital GroupGreycroftMadrona Venture GroupBuckley Ventures Management Company LlcUncorrelated Ventures468 CapitalBaseline VenturesAV8 VenturesRuna CapitalFathom CapitalLong Journey VenturesFounder CollectiveBenchmarkFirst Round CapitalCanaan PartnersGradient VenturesGoat CapitalPioneerC2 InvestmentsLookout VenturesStellar CapitalSoftBank Vision FundKortschak Investments L.P.500 GlobalBallistic VenturesAllison Pickens VenturesZ47PlaidCorrelation VenturesForum VenturesWndrCoSprout Social, Inc.REMUS CapitalNYU Innovation Venture FundAlephMKT1 CapitalSaas Ventures, L.L.C.BrightCap Investment Advisor AD
Firms observed investing alongside S28 Capital, from public investor directories. Shared companies are the overlap with S28 Capital's recorded portfolio.
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