SCHEDULE: Advent International Amends Stake in Definitive Healthcare

Advent International, L.P. and its affiliates have filed an amendment to their Schedule 13G, reporting their beneficial ownership of Definitive Healthcare Corp. Class A Common Stock as of March 31, 2026.

Summary

• This filing is an amendment to a Schedule 13G, indicating a change in beneficial ownership of Definitive Healthcare Corp. Class A Common Stock.
• The reporting persons are Advent International, L.P., Advent International GP, LLC, Advent International GPE IX Limited Partnership, and Advent International GPE IX-H Limited Partnership.
• As of March 31, 2026, the reporting persons collectively beneficially owned 62,493,676 shares of Class A Common Stock, representing 59.82% of the class.
• This ownership is calculated based on 104,472,371 shares outstanding as of February 23, 2026, as reported in Definitive Healthcare Corp.'s 10-K filed on February 26, 2026.
• The filing details the specific shareholdings of various Advent GPE IX Funds, Advent Global Technology Funds, and Advent Global Opportunities Master Limited Partnership, all of which are indirectly controlled or managed by Advent International, L.P. and its related entities.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this filing as neutral; it's a routine disclosure of ownership and does not provide new operational or financial information about Definitive Healthcare Corp. itself.

Positives

• The filing confirms a significant, ongoing investment by Advent International in Definitive Healthcare Corp., suggesting continued confidence in the company's prospects.
• The reporting persons hold substantial voting and dispositive power over a large portion of the company's Class A Common Stock.

Negatives

• The filing does not contain any negative financial information or operational concerns; it is purely a disclosure of beneficial ownership.

Risks

• Concentration of ownership by a single entity (Advent International and its affiliates) could influence corporate governance and strategic decisions.
• Potential for future changes in Advent International's stake, which could impact share price and market dynamics.

Future Outlook

The filing itself is a disclosure of current ownership and does not contain forward-looking statements or guidance from Definitive Healthcare Corp. The future outlook for the company would be inferred from its own financial reports and management statements, not this ownership filing.

Industry Context

StockSavvy.ai notes that large institutional ownership, as disclosed in this Schedule 13G filing by Advent International, is common in the healthcare technology sector. Such significant stakes often indicate a long-term investment thesis and can influence corporate strategy and board composition.

Stakeholder Impact

• Shareholders: The significant ownership by Advent International may influence strategic decisions, potentially impacting long-term shareholder value. It also indicates a strong conviction from a major investor.
• Management and Board of Directors: The substantial stake held by Advent International likely gives them significant influence over board appointments and corporate strategy.
• Employees: Changes in corporate strategy driven by a major shareholder could indirectly affect employees.
• Creditors and Suppliers: Stability of the company, influenced by major shareholder actions, can impact relationships with creditors and suppliers.

Next Steps

• Monitor future filings from Advent International for any changes in their beneficial ownership of Definitive Healthcare Corp.
• Review Definitive Healthcare Corp.'s own SEC filings (e.g., 10-Q, 10-K) for operational and financial performance updates.

Key Dates

Keywords

Definitive Healthcare Corp., Schedule 13G, Advent International, Beneficial Ownership, Class A Common Stock, SEC Filing, Amendment, Investment, Shareholder