# Antigenics Inc.

Business profile: public business information with links to supporting state records. Data as of October 16, 2026.

- Legal business name: Antigenics Inc.
- Alternative and DBA names: ''massachusetts Antigenics Inc''; Agenus Inc.; Antigenics Ma
- Entity type: C corporation
- Original incorporation date: February 16, 2001
- Time in business: 25 years and 8 months
- Jurisdiction count: 5

## All known addresses

- 3 Forbes Rd, Lexington, MA 02421 (listed in Massachusetts, New York)
- 162 5th Ave Ste 900, New York, NY 10010 (listed in Indiana, New York)
- 700 Business Center Dr, Horsham, PA 19044 (listed in Pennsylvania)

## Registered states

- [California](https://index.baselayer.com/ca/b0fb4bdfb8f966bb): Foreign registration, as ''massachusetts Antigenics Inc''
- [Indiana](https://index.baselayer.com/in/f296b4942130ab51): Foreign registration
- [Massachusetts](https://index.baselayer.com/ma/04a4471b68312778): Domestic registration
- [New York](https://index.baselayer.com/ny/e7033348f8d0de25): Foreign registration, as Agenus Inc.
- [New York](https://index.baselayer.com/ny/1b16772872f4c045): Foreign registration
- [Pennsylvania](https://index.baselayer.com/pa/cb4acc2b830bad77): Foreign registration

Source: public state registration records. Missing values are not a negative finding.

Cite as: Baselayer Business Index (https://index.baselayer.com/business/04a4471b68312778)