Last mentioned: 1d ago
Federal trial begins
Mangione's separate federal trial on stalking charges is set to start.
State trial jury selection begins
Mangione's murder trial in Manhattan Criminal Court commences with jury selection.
Final pretrial hearing
Next scheduled hearing to address evidentiary and procedural matters before state trial.
Public announcement of psychiatric defense
Judge Carro reveals in open court that Mangione will assert EED defense; orders redacted release of sealed records.
Secret hearing on psychiatric defense
Judge Carro holds a closed hearing at defense request to discuss and confirm the extreme emotional disturbance defense.
Defense files sealed letter
Mangione's lawyers first raise the possibility of a psychiatric defense in a sealed letter to the court.
Murder of Brian Thompson
UnitedHealthcare CEO Brian Thompson is shot and killed outside a Manhattan hotel by Mangione.
Luigi Mangione will claim extreme emotional disturbance in the murder of UnitedHealthcare CEO Brian Thompson, opening a rare path to a manslaughter conviction with a 25-year maximum. The defense faces steep evidentiary hurdles and is unavailable in his parallel federal case, creating a high-stakes, two-front legal battle.
This page surfaces every story mentioning Joel Seidemann across our legal 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 legal beat. Cross-entity comparisons live on our compare view.
| What you see | What it tells you |
|---|---|
| Story count | Number of distinct stories where Joel Seidemann 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. |