Investor profile - MA
Adam Portnoy
Adam Portnoy is a real estate investor and operator based in Boston-Worcester, MA-NH. Public filings show activity across 8 properties held through 19 holding companies. Recent mortgage relationships include U.S. Bank and Morgan Stanley Private Bank.
Adam's Activity
As of December 2025, public records show approximately $3.6B in recorded mortgage exposure linked to this investor across at least 20 mortgage filings and 8 properties held through 19 holding companies. Activity appears concentrated in commercial and multifamily assets recorded between 2016 and 2025.
Associated People
Primary Geography
Boston-Worcester, MA-NH
ZIP codes: 02210, 02114, 02215, 02421, and 01890
Most recorded activity for this investor appears in BOSTON, LEXINGTON, WINCHESTER, WESTFORD, and CONCORD.
Property Type Breakdown
Associated Entities (19)
MA · 8 properties · 5 mortgages
MA · 4 properties · 3 mortgages
MA · 2 properties · 3 mortgages
+16 more not shown
Mortgages (20)
Top Lenders
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 08/07/2025 | $0 | Open | Morgan Stanley Private Bank | SNH SEAPORT LLC | 11 FAN PIER BLVD, BOSTON, MA 02210 |
| 04/30/2025 | $20.8M | Open | PNC BANK NA | GABLES WINCHESTER SLC LLC | 299 CAMBRIDGE ST, WINCHESTER, MA 01890 320 |
| 12/20/2024 | $445.0M | Open | U.S. Bank | OPI 25 EXCHANGE LLC | - |
+17 more not shown
Owned Properties (8)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 299 CAMBRIDGE ST, WINCHESTER, MA 01890 320 | FEDERAL HOME LOAN MORTGAGE CORP | Owns - 8 mos | $0 |
| 4 MAGUIRE RD, LEXINGTON, MA 02421 | MAGUIRE ROAD MA LLC | Owns - 19 mos | $0 |
| 1295 BOYLSTON ST, BOSTON, MA 02215 | DHC ZB PROPERTIES LLC | Owns - 2.0 yrs | $10 |
+5 more not shown
FAQ
What type of real estate does this investor focus on?
Associated mortgages and deeds show activity in commercial, multifamily, and industrial properties across Boston-Worcester, MA-NH.
What companies is Adam Portnoy associated with?
Adam Portnoy is associated with 19 entities based on extracted signatures from public records. Key entities include DHC ZB PROPERTIES LLC, OPI NOTEX PROPERTIES LLC, SNH SEAPORT LLC, ABP BORROWER INC, and OPI 25 EXCHANGE LLC.
How many properties are associated with this investor?
At least 8 properties are associated with Adam Portnoy and the entities they control, based on signatures extracted from recorded documents connecting Adam Portnoy to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references U.S. Bank and Morgan Stanley Private Bank, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2016 through 2025, with the most recent mortgage recorded in 2025.
How is associated activity determined?
Elementix uses AI to extract signatures from recorded documents. These signatures are used to determine the relationships between people and entities. This is a novel approach that goes beyond looking at corporate filings and skip-tracing.
The information displayed on this page is compiled from recorded real estate documents, business filings, and other lawfully available sources. Elementix summarizes and analyzes public record activity related to investment real estate and associated business entities. Any contact indicators shown (such as email domain references or partial phone digits) are provided solely as unverified signals and may be incomplete or outdated.
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