Private Foundation

LAWRENCE A & JOAN E SIFF FOUNDATION F/K/A LAWRENCE A SIFF FOUNDATION

LAWRENCE A & JOAN E SIFF FOUNDATION F/K/A LAWRENCE A SIFF FOUNDATION, of WORCESTER, MA, is a Private Foundation tracked in Imperigo's IRS 990 database. The 2025 filing shows $21K in revenue, $13K in expenses, $129K in total assets. IRS filings disclose 120 grants awarded by this foundation, totaling roughly $217K.

EIN: 421612889 WORCESTER, MA Private Independent Foundations NTEE: T22 Latest filing: 2025
Total Revenue$21K
Total Expenses$13K
Total Assets$129K
Grants Given120
Grant Total$217K
Filing Years2021–2025

Sample Grants Given

MUSEUM OF SCIENCE
BOSTON, MA · 2025
GENERAL
$6,000
NEXT FOR AUTISM
NEW YORK, NY · 2025
GENERAL
$3,000
TWO TEN INTERNATIONAL FOOTWEAR FOUNDATION
WALTHAM, MA · 2025
GENERAL
$1,500
FRANCISCAN HOSPITAL FOR CHILDREN
BRIGHTON, MA · 2025
GENERAL
$1,000
THE WINDSOR SCHOOL
BOSTON, MA · 2025
GENERAL
$200

Showing up to 5 of 120 total records — full history available with membership.

Officers & Directors

TRUSTEE Joan E Swartz-Siff
TRUSTEE Lawrence A Siff
TRUSTEE Shirley S Siff
TRUSTEE Stefan Nathanson

Officer compensation and complete director data available with membership.

Top Grant Purposes

GENERAL
$216,691 120 grants

Financial Trends

Year Revenue Expenses Assets
2025 $21K $13K $129K
2024 $10K $8K $122K
2023 $4K $12K $120K
2022 $7K $31K $128K
2021 $27K $32K $152K

Between 2021 and 2025, reported annual revenue declined from $27K to $21K (-22%), with total assets most recently reported at $129K.

Interactive year-over-year charts and full filing details available with membership.

Grant Geography

Grants from this foundation were reported to recipients in MA, MN, NY, OH, RI, WA.

MAMNNYOHRIWA

Full geographic grant map with state-by-state breakdown available with membership.

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