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DH SCHEDULE 13D: SEC filing

Advent International, L.P.

Filed with the SEC on · accession 0001140361-26-035412

DH filed a SCHEDULE 13D (schedule 13d) with the SEC on Sep 2, 2026. Advent International, L.P. filed a Schedule 13D joint filing agreement as the designated filer on behalf of affiliated Advent entities regarding their position in Definitive Healthcare Corp. The filing itself is a procedural joint filing agreement and does not disclose a change in ownership or… The stock moved +15.3% by the first close after the filing.

Summary of the filing

Advent International, L.P. filed a Schedule 13D joint filing agreement as the designated filer on behalf of affiliated Advent entities regarding their position in Definitive Healthcare Corp. The filing itself is a procedural joint filing agreement and does not disclose a change in ownership or intent.

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Key details

Reporting person / designated filerAdvent International, L.P.
Subject companyDefinitive Healthcare Corp.
Reporting personAdvent International GPE IX Limited Partnership
Reporting personAdvent International GPE IX-H Limited Partnership
Senior director, fund administration, advent internationalNeil Crawford

How DH stock reacted

Close before

$0.90

Sep 1, 2026

First close after

+15.26%

$1.04

5 trading days

+14.15%

$1.03

Since filing

+27.45%

$1.15

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Frequently asked questions

What did DH file with the SEC on Sep 2, 2026?

DH filed a SCHEDULE 13D (SEC filing). Advent International, L.P. filed a Schedule 13D joint filing agreement as the designated filer on behalf of affiliated Advent entities regarding their position in Definitive Healthcare Corp. The filing itself is a procedural joint filing agreement and does not disclose a change in ownership or intent.

How do I read a SCHEDULE 13D?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13D (schedule 13d): A report the company filed with the SEC (the US market regulator).

How did DH stock react to this filing?

DH closed at $0.90 before the filing and $1.04 on Sep 2, 2026 (+15.26%). Five trading days later: $1.03 (+14.15%).

Other DH SEC filings

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