Last mentioned: Feb 25, 2026
Market Reporting
Financial news outlets report Cohen's sale of 327,088 and 19,988 share blocks.
Market Reaction
Investors analyze the impact of high-volume insider selling on PLTR stock valuation.
Coordinated SEC Filings
Insiders including Cohen, Karp, and Sankar file multiple Form 4s with the SEC.
Palantir Technologies President Stephen Andrew Cohen and other top executives have executed significant share sales totaling hundreds of thousands of shares in late February 2026. These transactions follow a period of robust performance for the data analytics firm and coincide with a broader wave of insider filings.
This page surfaces every story mentioning Alexander C. Karp across our finance coverage. We track each entity's appearance over time so readers can trace how the narrative evolves — which developments are isolated incidents, which build into longer arcs, and which reframe how operators in the space think about the entity. Story selection uses the same multi-source verification gate applied across the rest of our coverage.
Read our editorial methodology for how we identify, deduplicate, and score entity references. Our glossary defines the technical terms used across stories on this page, and our trends index contextualizes individual developments against the longer-running finance beat. Cross-entity comparisons live on our compare view.
| What you see | What it tells you |
|---|---|
| Story count | Number of distinct stories where Alexander C. Karp was a primary or referenced actor. |
| Recency clustering | Whether mentions are concentrated in a recent window (a news cycle) or distributed (a sustained arc). |
| Sentiment distribution | Aggregate sentiment of the stories mentioning this entity, weighted by impact score. |
| Cross-niche links | When the same entity surfaces in our sibling networks, we link to those views to enrich context. |