---
name: "Sam Chalsen"
canonical: "https://film.one/person/sam-chalsen"
fi1m_id: "sam-chalsen"
imdb_id: "nm5005987"
tmdb_id: 1403622
wikidata_id: "Q91470808"
roles: ["Producer"]
reviewed_on_fi1m: 1
average_as: "producer"
average_over: 0
updated: "2026-10-25T10:28:21.487620+00:00"
licence: "© Fi1m Ltd. Written by AI under a human editor; checked against sources before publication. Quote with attribution and a link to the canonical URL."
---

# Sam Chalsen

## Identity

Sam Chalsen

- **Canonical:** https://film.one/person/sam-chalsen
- **Type:** Person
- **Fi1m ID:** sam-chalsen
- **IMDb ID:** nm5005987
- **TMDB ID:** 1403622
- **Wikidata ID:** Q91470808
- **Same entity:** https://www.wikidata.org/wiki/Q91470808, https://www.imdb.com/name/nm5005987/, https://www.themoviedb.org/person/1403622

Producer.

## Details

- **Work:** Producer
- **Elsewhere:** https://www.wikidata.org/wiki/Q91470808, https://www.imdb.com/name/nm5005987/, https://www.themoviedb.org/person/1403622

## Streaming the US now

- **Netflix:** [*UNABOMBER*](https://film.one/film/unabomber.md) (44)

For United States; add `?region=XX` for another country.

## Biography

Sam Chalsen is a writer and producer. He co-wrote the screenplay for the 2026 film *Unabomber* with Nelson Greaves, on which he also serves as executive producer.

Chalsen wrote for the television series *Sleepy Hollow* (2013–2017), serving as executive story editor among other credits, and contributed as writer and producer to *The Flash* (2014–2023). With Greaves, he began his career after their pilot *Potus Maximus* sold to Fox; their subsequent projects included the screenplay for *Spy Hunter*.

Chalsen graduated from Harvard University in 2012, where he completed a screenwriting thesis.

*Sources: imdb.com, deadline.com, thecrimson.com.*

## On Fi1m (1)

- *UNABOMBER* (2026), Fi1m 44, Writer, Executive Producer — [page](https://film.one/film/unabomber.md)

## Complete filmography (3)

Every credit, newest first. Titles without a page can be requested for review on the HTML page.

- *UNABOMBER* (2026), Writer, Executive Producer — Fi1m 44, [page](https://film.one/film/unabomber.md)
- *The Flash* (2014), series, Writer, Co-Executive Producer, Executive Producer, Story, Co-Producer, Producer
- *Sleepy Hollow* (2013), series, Writer, Story, Teleplay, Executive Story Editor, Story Editor

---
© Fi1m Ltd. Written by AI under a human editor; checked against sources before publication. Quote with attribution and a link to the canonical URL. Canonical: https://film.one/person/sam-chalsen