Corbin J. Robertson Jr.

Corbin J. Robertson Jr. is a declared insider at 4 companies (board member); the most frequent names are KLX Energy Services Holdings, Inc., Natural Resource Partners LP and Quintana Energy Services Inc. Over a trading history stretching from 17 October 2002 to 16 September 2026, the count stands at 239 filings.

Both buying and selling appear: 30 purchases worth €5.2M, against 99 sales worth €4.9M. The totals do not cover 1 filing with an undisclosed amount. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Other entries cover 35 share grants and 39 option exercises.

The median purchase comes to €15k. Clusters matter here: 8 out of 8 purchases overlapped with buying by a colleague within 30 days. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase.

The latest filing, published on 17 September 2026, reports an option exercise of €50k in KLX Energy Services Holdings, Inc. The latest purchase dates back some time: it was published 2,594 days ago, on 17 September 2019. The median gap between a trade and its publication by SEC (Form 4) 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.