William H. Carson

William H. Carson is a declared insider at 2 companies; the most frequent names are Annexon, Inc. and Decibel Therapeutics, Inc. In total, 19 filings cover trades dated from 13 June 2023 to 10 April 2026.

The open-market record is one-sided, with 17 purchases worth €290k and not one sale. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. The rest of the record consists of 1 share grant. So far in 2026, the count stands at 3 purchases and no sales.

In size, the median ticket on the buying side is €16k. Of 17 purchases, 2 formed part of a group of insiders buying within 30 days of each other. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase.

Most recently, on 14 April 2026, the filings show an open-market purchase worth €42k in Annexon, Inc. The median gap between a trade and its publication by SEC (Form 4) is 2 days. The legal deadline for a Form 4 is two business days after the transaction. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.