Bain Capital Investors LLC

Filings by Bain Capital Investors LLC span 13 companies, the busiest being Bright Horizons Family Solutions Inc., Waystar Holding Corp. and Trinseo PLC. Between 22 March 2016 and 20 April 2026, the trades on record add up to 69 filings.

In open-market terms, that means 4 purchases worth €320.0M on one side and 38 sales worth €8.4B on the other. Netting one side against the other leaves €8.0B of net selling. 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 4 share grants and 1 option exercise. In 2026 alone, the filings show 1 purchase and 1 sale.

The median purchase comes to €99.4M. Of 4 purchases, 4 formed part of a group of insiders buying within 30 days of each other. Purchases made close together by different insiders form what is called a cluster.

The latest filing, published on 20 April 2026, reports an open-market purchase of €114.0M in Kailera Therapeutics, Inc. Typically, a trade is published a median of 2 days after it takes place. US insiders must file a Form 4 within two business days of a trade. Keep in mind that insiders sell for many reasons unrelated to the outlook, from tax bills to estate planning. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.