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Flex

Flex

Private
San Francisco, CaliforniaFinTechhttps://www.withflex.com/

Last Round

Series A

Sep 2, 2025

Est. Valuation

$48.52M

Total Funding Raised

$18.2M

Momentum

Top 50%

of companies Caplight tracks

Company Overview

Flex is a fintech company that provides a payment infrastructure platform enabling health and wellness businesses to accept Health Savings Account (HSA) and Flexible Spending Account (FSA) payments online.

Sector

FinTech

Verticals

Digital Payments, E-commerce, Compliance, Telemedicine

Business Model

B2B2C

Customer Profile

Payment Processing Fee, Marketplace Commission, Subscription SaaS

AI Layer

Non-AI

Keywords

HSA/FSA paymentspayment infrastructurepayment APIhealth spending accountspayment gatewaycompliance verificatione-commerce paymentsletter of medical necessityLMNHSA marketplaceFSA storepayment railsShopify integrationhosted checkoutsplit-card transactions

Historical Pricing

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Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

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Flex Comparables

Compare Flex with similar companies based on industry and business-model similarity.

Flex comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
TrueMed
92%
Sika Health
86%
Gale
83%

Flex Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series ASep 2, 2025
SeedSep 4, 2024

Key People

Founding team and executive leadership

Miguel Toledo

Co-Founder CTO

Founding Team

Sam OKeefe

Co-Founder & CEO

Founding Team

Flex Investors

Notable investors and investment history

Flex investors
InvestorRounds
SV AngelSeed, Series A
Rethink ImpactSeries A
Precursor VenturesSeed, Series A
First Round CapitalSeries A
Y CombinatorSeed, Series A
Liquid 2 VenturesSeed, Series A
Core Innovation CapitalSeries A

Market signals

Structured signals derived from secondary market and firmographic data.

  • Dec 9, 2025

    Partnered with Ladder for strength training HSA/FSA eligibility.

  • Sep 2, 2025

    $15M round raised

Flex Filings

SEC and related filings with document metadata.

Data table
TypedDateAmount OfferedAmount SoldFillingPagesDownload
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Flex Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about Flex's valuation, stock price, and market status.

Firmographic Details

HeadquartersSan Francisco, California
Employee Range51
Year Founded2023
Last FundingSep 2, 2025

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