William C. Bertrand Jr.

Filings by William C. Bertrand Jr. span 2 companies, the busiest being Adaptimmune Therapeutics PLC and Ardelyx, Inc. The record holds 29 filings, for trades running from 2 June 2016 to 16 June 2026.

In open-market terms, that means 1 purchase worth €119k on one side and 15 sales worth €111k on the other. Netting one side against the other leaves €7,040 of net buying. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Besides market trades, the filings include 13 share grants.

The latest filing, published on 18 June 2026, reports a share grant in Ardelyx, Inc. The clock since the last published purchase (15 December 2020) now reads 2,138 days. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 2 days. US insiders must file a Form 4 within two business days of a trade. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.