APGE SCHEDULE 13D/A: SEC filing

Venrock-affiliated filer Bong Koh

Filed with the SEC on Sep 8, 2026 · accession 0001231919-26-001150

APGE filed a SCHEDULE 13D/A (schedule 13d/a) with the SEC on Sep 8, 2026. Venrock-affiliated filer Bong Koh filed a Power of Attorney authorizing agents to make Schedule 13D/13G and Section 16 filings on his behalf regarding Apogee Therapeutics securities.

Summary of the filing

Venrock-affiliated filer Bong Koh filed a Power of Attorney authorizing agents to make Schedule 13D/13G and Section 16 filings on his behalf regarding Apogee Therapeutics securities. This is an administrative amendment to a Schedule 13D and does not reflect a change in beneficial ownership.

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Key details

Issuer of securities held by the filerApogee Therapeutics, Inc.

Filer's affiliated investment firmVenrock

Filer / venrock-affiliated holderBong Koh

Attorney-in-factJessica Baron

Attorney-in-factEvan W. Neu

Attorney-in-factSherman G. Souther, Jr.

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Frequently asked questions

What did APGE file with the SEC on Sep 8, 2026?

APGE filed a SCHEDULE 13D/A (SEC filing). Venrock-affiliated filer Bong Koh filed a Power of Attorney authorizing agents to make Schedule 13D/13G and Section 16 filings on his behalf regarding Apogee Therapeutics securities. This is an administrative amendment to a Schedule 13D and does not reflect a change in beneficial ownership.

How do I read a SCHEDULE 13D/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 13D/A (schedule 13d/a): A report the company filed with the SEC (the US market regulator).

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