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Dennis Callahan

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Dennis Callahan

( Massachusetts,  )

Charles Street Strategies, LLC

  • 617-999-6583

  • 10 Derne Street, Suite 3, Boston, MA, 02114, 

Clients

1) Armis Inc.

2) Brighton Marine, Inc.

3) Final Offer, LLC

4) First Atlantic, LLC

5) Greater Boston CVB

6) Heading Home, Inc.

7) HOLTEC Pilgrim LLC

8) Jamaica Plain Company

9) Junior Achievement of Greater Boston, Inc.

10) Junior Achievement of Western Massachusetts, Inc.

11) Norwell Visiting Nurses Association

12) PMI US Corporate Services Inc

13) RSM US LLP

Last Updated: July 16, 2026

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