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ADCT SCHEDULE 13G/A: SEC filing

Prosight Management, LP and affiliated entities

Filed with the SEC on · accession 0001617201-26-000007

ADCT filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Nov 13, 2026. Prosight Management, LP and affiliated entities filed an amended Schedule 13G indicating beneficial ownership of 399,900 common shares of ADC Therapeutics SA, representing approximately 0.31% of the outstanding shares. The stock moved -5.0% by the first close after the filing.

Summary of the filing

Prosight Management, LP and affiliated entities filed an amended Schedule 13G indicating beneficial ownership of 399,900 common shares of ADC Therapeutics SA, representing approximately 0.31% of the outstanding shares. The filing is a passive investment disclosure with no stated intent to influence control of the company.

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Key details

Common shares beneficially owned$400K
Total common shares outstanding of issuer$127.7M
Issuer of the securitiesADC Therapeutics SA
Reporting person / investment managerProsight Management, LP
Reporting person / record ownerProsight Fund, LP
Reporting person / record ownerProsight Plus Fund, LP
Reporting person / general partner of prosight managementProsight Partners, LLC
Sole manager of prosight partners, llc and general partner entitiesW. Lawrence Hawkins

How ADCT stock reacted

Close before

$1.41

Nov 12, 2026

First close after

-4.96%

$1.34

5 trading days

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Since filing

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Frequently asked questions

What did ADCT file with the SEC on Nov 13, 2026?

ADCT filed a SCHEDULE 13G/A (SEC filing). Prosight Management, LP and affiliated entities filed an amended Schedule 13G indicating beneficial ownership of 399,900 common shares of ADC Therapeutics SA, representing approximately 0.31% of the outstanding shares. The filing is a passive investment disclosure with no stated intent to influence control of the company.

How do I read a SCHEDULE 13G/A?

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 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

How did ADCT stock react to this filing?

ADCT closed at $1.41 before the filing and $1.34 on Nov 13, 2026 (-4.96%).

Other ADCT SEC filings

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