HELEN & WILLIAM MAZER FOUNDATION
https://N/A
$21.1M
Total Assets (2025)
$976K
Avg Yearly Giving (2023–2025)
$2.9M
Giving on File
(3 yrs)
(3 yrs)
339
Grants on File
$8K
Avg Grant Size
About
DELAWARE FILING IS NOT REQUIRED.
Application Information
Accepts Unsolicited Proposals
No — Preselected Only
Phone
9084648221
Financial Trends
Giving Over Time
Total Assets Over Time
View financial data as table
| Year | Total Giving | Total Assets | Revenue | Grants |
|---|---|---|---|---|
| 2021 | N/A | $23.3M | $3.9M | N/A |
| 2023 | $1.0M | $21.1M | $674K | 110 |
| 2024 | $942K | $19.7M | $1.7M | 110 |
| 2025 | $975K | $21.1M | $1.2M | 119 |
Grant Size Distribution
Based on 339 grants on record
Minimum
$150
25th Pctl
$1K
Median
$2K
Average
$9K
75th Pctl
$9K
Maximum
$85K
Geographic Distribution
Key Personnel
| Name | Title | Compensation |
|---|---|---|
| STEVEN BERCU | DIRECTOR | $10K |
| LINDA BERKOWITZ | PRESIDENT | — |
| LEONARD BERKOWITZ | TREASURER | — |
| ALAN BERKOWITZ | DIRECTOR | — |
| DAVID BERKOWITZ | DIRECTOR | — |
Grants Awarded (339 total)
| Recipient | Location | Amount | Purpose | Year |
|---|---|---|---|---|
| TPL-CT | NEW HAVEN, CT | $85,000 | CHARITABLE PURPOSES. | 2023 |
| ECOCITY BUILDERS | DURHAM, NC | $70,000 | CHARITABLE PURPOSES. | 2023 |
| TRUSTEES OF RESERVATIONS | BOSTON, MA | $55,000 | CHARITABLE PURPOSES. | 2024 |
| TRUSTEES OF RESERVATIONS | BOSTON, MA | $55,000 | CHARITABLE PURPOSES. | 2023 |
| EAST COAST GREENWAY | DURHAM, NC | $55,000 | CHARITABLE PURPOSES. | 2025 |
| BRANDEIS UNIVERSITY | WALTHAM, MA | $52,000 | CHARITABLE PURPOSES. | 2023 |
| BRANDEIS UNIVERSITY | WALTHAM, MA | $50,000 | CHARITABLE PURPOSES. | 2025 |
| TPL-CT | NEW HAVEN, CT | $50,000 | CHARITABLE PURPOSES. | 2025 |
| GREAT RIVERS GREENWAY | ST LOUIS, MO | $50,000 | CHARITABLE PURPOSES. | 2024 |
| BRANDEIS UNIVERSITY | WALTHAM, MA | $50,000 | CHARITABLE PURPOSES. | 2024 |
| CONSERVATION LAW FOUNDATION | BOSTON, MA | $48,000 | CHARITABLE PURPOSES. | 2025 |
| ECOCITY BUILDERS | DURHAM, NC | $47,500 | CHARITABLE PURPOSES. | 2025 |
| TPL-CA | LOS ANGELES, CA | $45,000 | CHARITABLE PURPOSES. | 2025 |
| CONSERVATION LAW FOUNDATION | BOSTON, MA | $45,000 | CHARITABLE PURPOSES. | 2024 |
| CONSERVATION LAW FOUNDATION | BOSTON, MA | $45,000 | CHARITABLE PURPOSES. | 2023 |
| TPL- NJ | SAN FRANCISCO, CA | $45,000 | CHARITABLE PURPOSES. | 2023 |
| TPL-NJ | NEWARK, NJ | $45,000 | CHARITABLE PURPOSES. | 2024 |
| SPRING STREET CLIMATE FUND | BROOKLYN, NY | $43,000 | CHARITABLE PURPOSES. | 2024 |
| SPRING STREET CLIMATE FUND | BROOKLYN, NY | $40,000 | CHARITABLE PURPOSES. | 2025 |
| ROCKEFELLER UNIVERSITY | NEW YORK, NY | $40,000 | CHARITABLE PURPOSES. | 2025 |
| ROCKEFELLER UNIVERSITY | NEW YORK, NY | $40,000 | CHARITABLE PURPOSES. | 2024 |
| ROCKEFELLER UNIVERSITY | NEW YORK, NY | $40,000 | CHARITABLE PURPOSES. | 2023 |
| LIVABLE STREETS TRANSPORTATION | CAMBRIDGE, MA | $36,500 | CHARITABLE PURPOSES. | 2024 |
| LIVABLE STREETS TRANSPORTATION | CAMBRIDGE, MA | $35,500 | CHARITABLE PURPOSES. | 2025 |
| LIVABLE STREETS TRANSPORTATION | CAMBRIDGE, MA | $35,000 | CHARITABLE PURPOSES. | 2023 |