Stuart A. Tross

Filings by Stuart A. Tross span 2 companies, the busiest being Mannkind Corp and Amgen Inc. Between 31 January 2016 and 15 July 2026, the trades on record add up to 44 filings.

The open-market side counts 5 purchases for €65k alongside 5 sales for €1.2M. The net balance comes to €1.2M on the selling side. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. Outside the open market, there are 33 share grants and 1 option exercise. So far in 2026, the count stands at no purchases and 1 sale.

In size, the median ticket on the buying side is €12k. 5 out of 5 purchases came within 30 days of a purchase by at least one other insider of the same company. Purchases made close together by different insiders form what is called a cluster.

On 17 July 2026 came the latest disclosure, an option exercise in Mannkind Corp. The clock since the last published purchase (1 August 2022) now reads 1,539 days. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. Section 16 rules allow two business days to file each Form 4. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.