Table of Contents
- ChurnZero founders and financing at a glance
- Who is You Mon Tsang?
- Who is Mark Heys?
- Why the founders built ChurnZero
- What ChurnZero does
- What makes the founder thesis distinctive?
- ChurnZero financing and transaction history
- What the latest milestone was intended to change
- Founder and company timeline
- The founders' public thesis
- Strengths, risks and unresolved questions
- Evidence to watch over the next 12 to 18 months
- Frequently asked questions
You Mon Tsang and Mark Heys founded ChurnZero, the ai customer growth and customer success platform business now serving customer success, account management, support, operations and revenue-retention teams. You Mon Tsang is Co-founder and Chief Executive Officer; Mark Heys is Co-founder and Chief Technology Officer.
The latest material financing milestone covered here is $25M Series B, dated 2021-03-04. The relevant total is $35M raised to date at the Series B announcement, labelled as company- and investor-confirmed cumulative funding; no later institutional round was verified. It is company-level capital or transaction value—not founder net worth.
Authentic ChurnZero website evidence captured on 21 July 2026.
ChurnZero founders and financing at a glance
| Field | Verified information |
|---|---|
| Founding team | You Mon Tsang and Mark Heys |
| Current or documented roles | You Mon Tsang: Co-founder and Chief Executive Officer; Mark Heys: Co-founder and Chief Technology Officer |
| Company | ChurnZero — churnzero.com |
| Founded | 2015 |
| Headquarters or operating scope | Washington, District of Columbia, United States; global operations |
| Product category | AI customer growth and customer success platform |
| Primary customer | Customer success, account management, support, operations and revenue-retention teams |
| Latest financing milestone | $25M Series B, 2021-03-04 |
| Total or transaction value | $35M raised to date at the Series B announcement — company- and investor-confirmed cumulative funding; no later institutional round was verified |
| Public status | Privately held or part of an acquirer |
| Last verified | 21 July 2026 |
Who is You Mon Tsang?
You Mon Tsang is Co-founder and Chief Executive Officer at ChurnZero. You Mon Tsang's role should be read in its current context: founder status is permanent, while executive responsibility can change as a company scales, lists publicly or is acquired.
Founder profile: Connect with You Mon Tsang on LinkedIn.
ChurnZero co-founders Mark Heys, left, and You Mon Tsang in attributed SaaS Mag photography.
In the founding team, You Mon Tsang contributed to the combination of product judgment, technical execution and go-to-market work behind ChurnZero. The public evidence does not justify claims about private ownership, personal wealth or undisclosed internal responsibilities.
Who is Mark Heys?
Mark Heys is Co-founder and Chief Technology Officer at ChurnZero. Mark Heys's role should be read in its current context: founder status is permanent, while executive responsibility can change as a company scales, lists publicly or is acquired.
Founder profile: Connect with Mark Heys on LinkedIn.
ChurnZero co-founders Mark Heys, left, and You Mon Tsang in attributed SaaS Mag photography.
In the founding team, Mark Heys contributed to the combination of product judgment, technical execution and go-to-market work behind ChurnZero. The public evidence does not justify claims about private ownership, personal wealth or undisclosed internal responsibilities.
Why the founders built ChurnZero
Tsang and Heys founded ChurnZero around a recurring-revenue problem: subscription businesses could see usage data but lacked a purpose-built operating system for acting before customers disengaged. Their product thesis joined customer health, lifecycle automation and direct engagement so customer teams could move from reactive renewal work to continuous retention and expansion.
This is documented company history plus editorial assessment. It does not establish private motivations beyond what the founders and company have said publicly.
What ChurnZero does
ChurnZero unifies customer data, health scoring, journeys, plays, in-app communication, collaboration and reporting. Its current AI customer-growth platform adds specialized AI teammates and contextual assistance intended to help post-sales teams identify risk, personalize engagement and scale their operating knowledge.
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What makes the founder thesis distinctive?
The CSV describes ChurnZero as a Series C company. ChurnZero's own funding record identifies a $25M Series B in March 2021 that brought total capital to $35M, and no later Series C was verified. The official company page identifies both You Mon Tsang and Mark Heys as co-founders.
Our assessment is that durable differentiation must show up in customer outcomes, workflow adoption, reliable data movement and lower operating cost—not only in feature count or AI branding.
ChurnZero financing and transaction history
| Announcement date | Round or instrument | Amount | Lead or named participants | Reported use | Evidence status |
|---|---|---|---|---|---|
| 2016–2017 | Seed financing | $3M reported | Middleland Capital and early investors | Build the customer-success platform | Reported |
| 23 April 2019 | Series A | $7M; $10M total | Baird Capital with Grotech Ventures and Middleland Capital | Expand the team and platform | Company-confirmed |
| 4 March 2021 | Series B | $25M; $35M total | JMI Equity with Baird Capital and Grotech Ventures | Expand the ecosystem, team, go-to-market and product development | Company- and investor-confirmed |
| — | Current qualified figure | $35M raised to date at the Series B announcement | — | — | company- and investor-confirmed cumulative funding; no later institutional round was verified |
The headline uses $25M Series B because it is the clearest recent milestone in the verified record. Different instruments are not silently combined: acquisition consideration, IPO proceeds, primary funding and secondary liquidity have different meanings.
What the latest milestone was intended to change
Public statements connect the milestone to some combination of product investment, AI capability, geographic expansion, hiring, acquisitions or shareholder liquidity. Those plans are attributed intentions, not proof that each outcome occurred. Evidence should include shipped capabilities, adoption, retention, unit economics and customer results after the transaction.
Founder and company timeline
| Period | Milestone |
|---|---|
| 2015 | Tsang and Heys found ChurnZero in Washington, D.C. |
| 2017 | Seed financing supports early product growth. |
| April 2019 | A $7M Series A brings total funding to $10M. |
| March 2021 | ChurnZero raises a $25M Series B, reaching $35M total. |
| 2025–2026 | The platform expands AI teammates and customer-growth automation. |
The founders' public thesis
Across the available company history, the founders argue that customer data becomes valuable when operating teams can turn it into timely, coordinated action. The exact emphasis differs by company—category creation, accessibility, data ownership, real-time infrastructure or AI-assisted execution—but the test is similar: can a customer make better decisions without adding hidden complexity?
Strengths, risks and unresolved questions
Visible strengths
- A founding thesis attached to a recurring and measurable marketing workflow.
- Product history and financing evidence available from primary sources.
- A platform broad enough to influence data, orchestration and customer communication.
Material risks
- Customer-success platforms centralize sensitive product, commercial, support and communication data.
- Health scores and AI risk predictions can create false certainty unless inputs, missing data and decision rules are governed.
- The $35M figure is the company-stated total at the 2021 Series B and should not be treated as current valuation or founder wealth.
Questions buyers and researchers should ask
- Which founder roles are current, and which describe historical service?
- How is incremental customer or revenue impact measured against a control?
- What data, consent, model and deliverability controls constrain automated action?
- Which transaction amounts were primary capital, secondary liquidity or acquisition consideration?
- What implementation resources are required before the platform produces reliable value?
Evidence to watch over the next 12 to 18 months
Watch for independently explainable retention and expansion, transparent AI evaluation, successful migrations, product delivery tied to the announced financing purpose and current executive-role disclosures. For public companies, filings provide a stronger operating signal than promotional customer counts alone. For private companies, future financing announcements should identify transaction composition clearly.
Frequently asked questions
Who founded ChurnZero?
ChurnZero was founded by You Mon Tsang and Mark Heys.
What does ChurnZero do?
ChurnZero provides ai customer growth and customer success platform capabilities for customer success, account management, support, operations and revenue-retention teams.
What is ChurnZero's latest financing milestone?
The latest milestone verified for this profile is $25M Series B, dated 2021-03-04.
How much funding has ChurnZero raised?
The qualified figure used here is $35M raised to date at the Series B announcement. Its status is company- and investor-confirmed cumulative funding; no later institutional round was verified; it should not be interpreted as founder wealth.
What should buyers verify?
Buyers should test data integration, consent controls, measurement, implementation effort, support, exportability and the limits placed on automated or AI-generated actions.
Tolu S.
Associate Director
Evidence-led product reviews and founder profiles for search, marketing, authority, and AI visibility teams.
