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DH SCHEDULE 13D: Activist campaign

A Schedule 13D was

Filed with the SEC on · accession 0001193125-26-379428

DH filed a SCHEDULE 13D (schedule 13d) with the SEC on Sep 2, 2026. A Schedule 13D was filed regarding Definitive Healthcare Corp., indicating a new or amended beneficial ownership position by an activist or significant holder. The stock moved +15.3% by the first close after the filing.

Summary of the filing

A Schedule 13D was filed regarding Definitive Healthcare Corp., indicating a new or amended beneficial ownership position by an activist or significant holder. The filing text available does not disclose the holder's identity, ownership percentage, or stated purpose.

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Key details

Subject companyDefinitive Healthcare Corp.

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 (Activist campaign). A Schedule 13D was filed regarding Definitive Healthcare Corp., indicating a new or amended beneficial ownership position by an activist or significant holder. The filing text available does not disclose the holder's identity, ownership percentage, or stated purpose.

What does a activist campaign mean for DH stock?

A settlement removes uncertainty; the stock often reacts to whether the amount is bigger or smaller than investors expected.

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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