Tandem Philanthropies | Foundation Profile

GrantBay analyzes IRS Form 990-PF data to help grant seekers find fit funders like Tandem Philanthropies. Data shown is extracted from Form 990-PF filings.

EIN: 38-4055324

Foundation Overview

Based in Menlo Park, CA, Tandem Philanthropies has awarded 20 grants totaling $7,630,800 to organizations in Ohio, New York and 4 other states across the US. Individual grants range from $50,000 to $1,500,000, with a median award of $250,000.

Latest Tax Year
2023
Total Giving (all years)
$7,630,800
Total Assets
$70,954,502
Median Grant (all grants)
$250,000

Latest Form 990-PF Snapshot

Total Grants
8
Median Grant
$275,400
% Median Grant Growth
+10% (vs previous year)
Data extracted from IRS Form 990-PF filings. Last filing year: February 2026

Foundation Intelligence

Advanced analytics and strategic insights to help nonprofit organizations assess grant opportunities and optimize their application strategies

New Applicant Friendliness
Growth-Minded: 63%

5 of 8 recipients (63%) were new grantees. Foundation actively seeks new partnerships to expand impact. Fresh approaches and innovative programs receive serious consideration.

Geographic Focus
California

Grants are geographically diversified with 35% in California and funding distributed across 6 total locations. This foundation values broad geographic impact and diverse community partnerships. Within California, funding concentrates in San Francisco (43%), Berkeley (43%), Redwood City (14%).

Funding Trajectory
+155%

Strong 155% growth in annual giving over 3 years indicates expanding philanthropic capacity and increasing opportunities for grant seekers. This upward trajectory suggests growing foundation resources and commitment.

Program Areas
Community Projects

Highly focused on community projects with 100% of funding dedicated to this sector. This specialization indicates deep expertise and committed investment in the field.

Where is The Money Going?

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Grants & Funding

Analyzing past grantees provides valuable insights into Tandem Philanthropies's funding preferences, organizational priorities, and grant making patterns. This historical data helps potential applicants understand the foundation's strategic focus and identify successful funding approaches.

Name Amount Location Purpose Year
Alder Graduate School Of Education $300,000 Redwood City, CA, US To Provide General Support 2023
Educators For Excellence Inc $350,000 New York, NY, US To Provide General Support 2023
Arizona State University Foundation $600,000 Tempe, AZ, US To Provide General Support 2023
Ceres $250,800 Boston, MA, US To Provide General Support 2023
Activate Global Inc $250,000 Berkeley, CA, US To Provide General Support 2023
United States Energy Foundation $500,000 San Francisco, CA, US To Provide General Support 2023
Prime Coalition Inc $250,000 Cambridge, MA, US To Provide General Support 2023
Health Care Without Harm $250,000 Reston, VA, US To Provide General Support 2023
Ted Foundation Inc $50,000 New York, NY, US To Provide General Support 2022
United States Energy Foundation $500,000 San Francisco, CA, US To Provide General Support 2022
Activate Global Inc $250,000 Berkeley, CA, US To Provide General Support 2022
Rockefeller Philanthropy Advisors $100,000 New York, NY, US To Provide General Support 2022
Prime Coalition Inc $250,000 Cambridge, MA, US To Provide General Support 2022
Ted Foundation Inc $50,000 New York, NY, US To Provide General Support 2022
United States Energy Foundation $500,000 San Francisco, CA, US To Provide General Support 2022
Activate Global Inc $250,000 Berkeley, CA, US To Provide General Support 2022
Rockefeller Philanthropy Advisors $100,000 New York, NY, US To Provide General Support 2022
Prime Coalition Inc $250,000 Cambridge, MA, US To Provide General Support 2022
Fidelity Charitable Gift Fund $1,500,000 Cincinnati, OH, US To Provide General Support 2021
Fidelity Charitable Gift Fund $1,080,000 Cincinnati, OH, US To Provide General Support 2020

Foundations Similar to Tandem Philanthropies

Discover 5 foundations with comparable assets ($68,688,098-$75,754,022), similar grant patterns, and geographic focus in CA that may also align with your organization's funding needs and grant seeking strategy.

Foundation Name Total Assets Typical Grant Size Service Area Similarity Match

EIN: 20-5885806 | 22 grants awarded
$71,186,343
(≈ Similar)
$301,000
median grant
San Diego, CA
Same state
102%
Excellent match

EIN: 94-2416417 | 38 grants awarded
$68,688,098
(≈ Similar)
$185,693
median grant
San Francisco, CA
Same state
100%
Excellent match

EIN: 20-1688777 | 84 grants awarded
$73,655,720
(≈ Similar)
$137,500
median grant
Irvine, CA
Same state
100%
Excellent match

EIN: 23-7434707 | 116 grants awarded
$73,966,594
(≈ Similar)
$250,000
median grant
Pasadena, CA
Same state
100%
Excellent match

EIN: 46-4924931 | 94 grants awarded
$75,754,022
(≈ Similar)
$307,190.5
median grant
West Hollywood, CA
Same state
99%
Excellent match

Contact Information

Official contact details for Tandem Philanthropies as registered with the IRS. These details are essential for grant applications, correspondence, and due diligence processes.

EIN 38-4055324
Website N/A
Address 1550 EL CAMINO REAL 200 Menlo Park, CA 94025-0000

Key People (3)

Board members, trustees, and key staff who oversee Tandem Philanthropies's grant making decisions and strategic direction. Understanding leadership composition can provide insights into foundation priorities and potential networking opportunities.

Director, Secretary, And Ceo David L Sze
Director And Cfo Kathleen M Donohue
Audit Committee Member Zachary Herlick

Forms 990-PF

IRS Form 990-PF filings provide comprehensive financial information, grant details, and operational data. These documents are essential resources for understanding foundation capacity, giving patterns, and strategic priorities.

Form 990-PF Research Tips
  • Review Part XV for detailed grant recipient information and funding purposes
  • Check Part I for total assets, annual giving amounts, and payout requirements
  • Examine Part VIII for key personnel compensation and board structure
  • Look for trends across multiple years to understand giving patterns

About This Foundation Profile

This comprehensive foundation profile for Tandem Philanthropies is powered by Grant Bay's advanced foundation research platform. Our system analyzes IRS Form 990-PF filings, grant histories, and philanthropic patterns to provide nonprofit organizations with actionable intelligence for grant seeking success.

Data Sources & Accuracy

All information is derived from official IRS filings and public records. Grant Bay processes thousands of Form 990-PF documents to extract grant details, financial data, and organizational information. Data accuracy depends on foundation reporting quality and IRS filing completeness.

Research Applications

Use this profile for prospect research, grant strategy development, application preparation, and relationship building. Combine this data with additional research on foundation priorities, application processes, and board member backgrounds for comprehensive grant seeking strategies.

Data Currency: Last updated February 2026 based on IRS Form 990-PF filings. Foundation information reflects most recent available tax year data.