Tortoise Foundation | Foundation Profile

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

EIN: 46-1093279

Foundation Overview

Based in New York, NY, Tortoise Foundation has awarded 18 grants totaling $397,500 to organizations in New York and California. Individual grants range from $10,000 to $50,000, with a median award of $15,000.

Latest Tax Year
2024
Total Giving (all years)
$397,500
Total Assets
$76,375
Median Grant (all grants)
$15,000

Latest Form 990-PF Snapshot

Total Grants
2
Median Grant
$27,500
% Median Grant Growth
+100% (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
Limited Sample: 0%

2 total grants. Insufficient data for reliable pattern analysis. Foundation may be highly selective or recently established.

Geographic Focus
New York

78% of all grants are concentrated in New York, demonstrating highly focused geographic giving. This foundation prioritizes deep community impact in its primary service area. Within New York, funding concentrates in New York (79%), Tannersville (21%).

Funding Trajectory
+450%

Strong 450% growth in annual giving over 6 years indicates expanding philanthropic capacity and increasing opportunities for grant seekers. This upward trajectory suggests growing foundation resources and commitment.

Program Areas
General Purposes

Highly focused on general purposes 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 Tortoise Foundation'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
Catapult Opera $25,000 New York, NY, US General Purpose 2024
Carnegie Hall $30,000 New York, NY, US General Purpose 2024
Mountain Top Arboretum $15,000 Tannersville, NY, US General Purpose 2022
Carnegie Hall $12,500 New York, NY, US General Purpose 2022
Room To Read $50,000 San Francisco, CA, US General Purpose 2022
The School For Strings $10,000 New York, NY, US General Purpose 2022
Mountain Top Arboretum $15,000 Tannersville, NY, US General Purpose 2022
Carnegie Hall $12,500 New York, NY, US General Purpose 2022
Room To Read $50,000 San Francisco, CA, US General Purpose 2022
The School For Strings $10,000 New York, NY, US General Purpose 2022
Mountain Top Arboretum $15,000 Tannersville, NY, US General Purpose 2022
Carnegie Hall $12,500 New York, NY, US General Purpose 2022
Room To Read $50,000 San Francisco, CA, US General Purpose 2022
The School For Strings $10,000 New York, NY, US General Purpose 2022
Nyu Langone Health $25,000 New York, NY, US General Purpose 2021
Room To Read $20,000 San Francisco, CA, US General Purpose 2020
Nyu Langone Health $25,000 New York, NY, US General Purpose 2020
Storefront For Art And Architecture $10,000 New York, NY, US General Purpose 2018

Foundations Similar to Tortoise Foundation

Discover 5 foundations with comparable assets ($75,975-$77,055), similar grant patterns, and geographic focus in NY 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: 26-4219344 | 64 grants awarded
$76,617
(≈ Similar)
$7,500
median grant
Roslyn, NY
Same state
100%
Excellent match

EIN: 81-3204719 | 161 grants awarded
$76,097
(≈ Similar)
$20,000
median grant
Clifton Springs, NY
Same state
100%
Excellent match

EIN: 81-2437036 | 1 grants awarded
$75,975
(≈ Similar)
$25,000
median grant
New York, NY
Same state
100%
Excellent match

EIN: 83-6698611 | 107 grants awarded
$76,827
(≈ Similar)
$20,000
median grant
Saugerties, NY
Same state
100%
Excellent match

EIN: 13-4067635 | 14 grants awarded
$77,055
(≈ Similar)
$10,000
median grant
New York, NY
Same state
100%
Excellent match

Contact Information

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

EIN 46-1093279
Website N/A
Address CO SACKS 600 THIRD AVENUE 18 FL New York, NY 10016-0000

Key People (2)

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

Director Seth L Harrison
Director Ariane Lourie Harrison

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 Tortoise Foundation 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.