Christine Tsai
CEO and Founding Partner @ 500 Global
San Francisco, United States
Christine Tsai is a seed investor at 500 Global in San Francisco focused on Software and SaaS. Christine is the CEO and Founding Partner of 500 Global (formerly 500 Startups). Before founding 500 Global, she held product marketing and operating roles at Google. Christine holds a B.A. in Cognitive Science from the University of California at Berkeley.
- Total investments:
- 29
- Last investment:
- Lead investor:
- 10%
Last updated:
For AI agents: llms.txt
Industries Christine Tsai invests in
Stages Christine Tsai invests in
Countries Christine Tsai invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $50k–$2.8M
Investment Focus
Industry
- Software 8 (28%)
- SaaS 5 (17%)
- Mobile 5 (17%)
- FinTech 5 (17%)
- Enterprise Software 5 (17%)
Stage
- Seed 22 (76%)
- Angel 1 (3%)
- Pre-Seed 1 (3%)
- Series B 1 (3%)
- Venture - Series Unknown 1 (3%)
Country
- United States 18 (62%)
- India 1 (3%)
- Japan 1 (3%)
- Spain 1 (3%)
- Thailand 1 (3%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Quill Meetings develops Quilliam, an on-device AI platform that coordinates staff work and captures meeting intelligence for professionals. The software records and transcribes conversations locally, generates structured notes, minutes, and action items, and supports multilingual summaries. It integrates with tools such as CRM systems, projectboards, email, and collaboration platforms to update records and trigger follow-ups. The platform targets investors, founders, sales teams, recruiters, coaches, and other knowledge workers who handle frequent meetings. | $6.5M / Seed / Feb 25, 2026 | ||
| A powerful AI automation and analytics platform that enables Life Science and Healthcare companies to automate their workflows to drive operational efficiency and to close the gaps between data, insights, and action. | Seed / Oct 06, 2022 | ||
| TartanHQ is an infrastructure platform that helps enterprises integrate customer data across applications, resolve identity, and automate operational workflows using system-level intelligence. It connects data across fragmented enterprise systems and enables AI-powered workflows through three core products: HyperSync - Integrates 100+ HRIS, ERP,CRM platforms to unify & standardize siloed & fragmented enterprise data in real-time without custom connectors HyperApps - AI-driven workflows for compliance, onboarding, and process automation deployed without heavy engineering HyperVerify - Consent-driven Real-time verification of identity, employment, address, income, and business credentials to streamline onboarding, scale decisioning and reduce fraud | $4.5M / Seed / Aug 01, 2022 | ||
| Stack is a smart browser for internet multitaskers that manages all apps from one place. It increases the efficiency of working with the web for the average internet users by allowing simultaneous use of multiple web-apps within a neatly organized working environment. It is designed to make multitasking in web reality and work with the internetfun.Stack was founded in 2019 and is headquartered in Amsterdam, The Netherlands. | $850K / Seed / Dec 14, 2020 | ||
| Abound is a modern API solution that streamlines the collection of W-9 forms, verifies TINs, and manages 1099 filings for compliance. It reduces errors through real-time verification and allows businesses to maintain control over user data while automating processes. | $650K / Pre-Seed / Sep 16, 2019 | ||
| ProSky is an HR SaaS platform that gives companies a full-stack solution to hiring and organization talent development. Companies can innovatively evaluate candidates for hire and develop employees through succession pathways, so they can recruit, hire, retain, train and grow the best diverse talent & culture fit. | $2.4M / Seed / Sep 15, 2016 | ||
| RealtyShares is a real estate investment platform that gives investors direct access to quality commercial real estate investment opportunities. It connects its network of individual and institutional investors with experienced real estate operators looking to raise capital to improve properties for higher, better use. Venture-backed by premierinvestors such as 500 Startups, Union Square Ventures, General Catalyst, Cross Creek Advisors, and Menlo Ventures, RealtyShares has deployed more than $840 million over 1,100 investment opportunities in 41 states. | $20M / Series B / Feb 24, 2016 | ||
| Alphaus is an AWS Advanced Technology Partner and a VC-backed tech startup that assists AWS, Azure, and Google Cloud partners and user enterprises in understanding complex cloud spend, accurately allocating it to each client or business unit, and optimizing it through better procurement.Alphaus Cloud, one of its SaaS products, is a cloudfinancial management tool that is best suited for the cloud era, with proven use cases in APN (AWS Partner Network) Premier and Advanced Consulting Partners.The company was founded in 2015 and is based in Tokyo, Japan. | $125K / Seed / Feb 04, 2016 | ||
| Omise is an online payment gateway offering a wide range of processing solutions for any business need. Our endeavor is to provide the best online payment experience that works seamlessly on both the mobile and the web. With a growing dynamic international team, we relentlessly work to set new benchmarks to the industry by optimizingeasy-to-integrate functionality for our partners while at the same time, narrowing the gap that staggers between the physical and online market today. Omise now operates in Thailand, Japan, and Singapore.In Thailand, online stores are still striving to have a proper payment solution because applying and implementing has never been simple and smooth. All of the major PSP’s require cumbersome documentation to apply; monthly commitments, high transaction fees and all take considerable amount of time to gain approval. Additionally, there is no good online API documentation or sandbox to test. Thus, stores drive their business by offline payment methods such as ATMs, Banks or online banking. Once shoppers have made their transactions, they have to send a proof of payment to there store via email or other social network channels. Since there is no payment notification, the store has to check the transaction manually which delays the delivery time and increases the chance of fraud. This fraud may occur by shoppers’ photo shopping their proof of payment.Since a reliable, simple and smooth online payment system has been lacking in Thailand, Omise.co founder, Jun Hasegawa and co-founder Ezra Don Harinsut, recognized the need to bridge the gap between stores and shoppers. Therefore, the Omise team has been developing a payment solution that would be available for everyone to sign up and make online payments simple, easy, smooth and possible. Omise is ideal for both developers and non-developers. Applying for Omise only requires minimal online identification, no minimum monthly commitment and low transaction fees. Stores will be able to accept payments instantly. In addition, for non-developers, accepting payments via social network will be possible for everyone! Stores are able to accept credit and debit card payments as well as bill payments which will allow shoppers to pay by their online banking accounts, ATM’s and banks. Providing the highest level of online payment security standard has always been Omise’s goal. That is why Omise has achieved PCI-DSS 3.1 compliant to meet all requirements from VISA and Master. | Seed / Nov 26, 2015 | ||
| Barn & Willow is a vertically integrated home decor brand making custom-made window coverings effortless and accessible. | $125K / Seed / Oct 10, 2015 | ||
| See all 29 investments → | |||
Co-Investors
About 500 Global
500 Global offers an accelerator program designed to provide mentorship and resources to startup founders. It facilitates educational programs for investors and operates networking platforms to connect entrepreneurs with mentors and operators. The firm's activities include managing investment strategies focused on diverse geographic regionsand sectors. Through its infrastructure, the company supports the development of innovation ecosystems by providing access to capital and industry expertise.
500 Global Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Agahuseyn Ahmadov
Program Coordinator
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Amjad Ahmad
General Partner
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Arın Ozkula
General Partner
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Ashraf Sinclair
Venture Partner
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Cecilia Ezquerro
Associate
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FAQ
What does Christine Tsai invest in?
Christine Tsai invests primarily in Software, SaaS and Mobile startups, most often at Seed and Angel stage. Most of the 29 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does Christine Tsai invest in?
Christine Tsai typically joins rounds of $50k–$2.8M at Seed. These are whole funding-round sizes, not Christine Tsai's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds Christine Tsai took part in.
How do I contact Christine Tsai?
Public channels for Christine Tsai include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Christine Tsai last invest?
The most recent investment recorded for Christine Tsai closed in Feb 2026. Shizune tracks 29 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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