Latest filing published 20 Aug 2026 for Keros Therapeutics, Inc., €4,898. Read the official filing
Across 1 buy signal with a settled T+90 return. Return basis: close on the day after publication.
Charles W. Newton has filed trades across 5 companies (mainly through SEC (Form 4)), most often in Lyell Immunopharma, Inc., 2seventy bio, Inc. and Keros Therapeutics, Inc. The record holds 12 filings, for trades running from 9 February 2024 to 18 August 2026.
On the open market, the record shows 1 purchase worth €103k and 2 sales worth €6,085. The net balance comes to €96k on the buying side. Unlike grants, an open-market purchase is paid for by the insider, at the market price. The rest of the record consists of 7 share grants and 1 option exercise. Since January 2026: no purchases and 1 sale on the market.
The newest entry dates from 20 August 2026: an open-market sale of €4,898, in Keros Therapeutics, Inc. The clock since the last published purchase (18 March 2025) now reads 579 days. The median gap between a trade and its publication by SEC (Form 4) is 2 days. For comparison, the SEC allows two business days to file a Form 4. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.
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