Stuart Rich

Stuart Rich (senior executive) discloses dealings in Tenax Therapeutics, Inc. to SEC (Form 4). We count 14 filings; the first trade dates from 15 January 2021 and the latest from 9 December 2025.

The open-market record is one-sided, with 5 purchases worth €83k and not one sale. 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 2 share grants and 1 option exercise. In 2025 alone, the filings show 5 purchases and no sales.

In size, the median ticket on the buying side is €20k. Of 5 purchases, 5 formed part of a group of insiders buying within 30 days of each other. When several insiders buy within a few weeks of each other, analysts speak of a cluster purchase.

The record was last updated on 10 December 2025 with an open-market purchase (€22k) in Tenax Therapeutics, Inc. Typically, a trade is published a median of 4 days after it takes place. US insiders must file a Form 4 within two business days of a trade. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.