General information for Castellum Inc
Physical address
44145 Airport View Dr Unit 102 Ofc 1, Hollywood, Md, 20636
Mailing address
1934 Old Gallows Rd Ste 350, Vienna, VA, 22182
Website
castellumus.com
Points of contact for Castellum Inc
SAM.gov Points of Contact
April
Tsirigotis
Government Business POC
Electronic Business POC
VP, Program Execution and Support
44145 Airport View Drive, Suite 102, Hollywood, MD, 20636
Andrew
Merriman
Alternate Government Business POC
Alternate Electronic Business POC
COO
44145 Airport View Drive, Suite 102, Hollywood, MD, 20636
Additional contact details may be available
NAICS codes for Castellum Inc
| Code | Description | Small Business |
|---|---|---|
| 541330 PRIMARY | Engineering Services | No |
| 541511 | Custom Computer Programming Services | No |
| 541513 | Computer Facilities Management Services | No |
|
541519
|
Other Computer Related Services
|
No
|
|
541611
|
Administrative Management and General Management Consulting Services
|
No
|
|
541618
|
Other Management Consulting Services
|
No
|
|
541690
|
Other Scientific and Technical Consulting Services
|
No
|
|
541715
|
Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
|
No
|
|
541990
|
All Other Professional, Scientific, and Technical Services
|
No
|
|
561110
|
Office Administrative Services
|
No
|
|
611430
|
Professional and Management Development Training
|
No
|
Update history
1 change(s) tracked
Nov 14, 2025
NAICS 541330: exception NYYY → NNNN
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