Dallas, TX

Memnosyne Institute

EIN 20-4064644

Arts, Culture & Heritage Cultural Heritage & Traditions

Mission

The mission of the Memnosyne Institute is to help the diverse people of the world consciously encourage an evolution for themselves and for future generations by providing humanity with the means to encourage positive, peaceful global collaboration across seven areas of knowledge (environment/science/economics, art, interfaith inquiry, indigenous cultures, spirituality, health & medicine, and local/global outreach).

IRS-recognized 501(c)(3) private non-operating foundation Contributions are tax-deductible

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About Memnosyne Institute

Memnosyne Institute is a Dallas-based 501(c)(3) nonprofit (founded in 2008) that supports community-engaged programs in environment and sustainability, interfaith initiatives, indigenous cultures, arts, health, spirituality and global-local outreach. Research confirmed the EIN 20-4064644 matches the organization’s public tax filings and nonprofit records.

The organization operates projects including Green Source Texas (regional environmental news and programming), community events such as Oak Cliff Earth Day, interfaith service networks, and educational initiatives. In recent years Memnosyne resumed regular in-person programs (notably from 2023 onward), participated in regional sustainability forums, and reported growth in program revenue and charitable disbursements on its most recent Form 990 filings (FY2023–FY2024).

Notable achievements

Program funding and fiscal growth

Form 990 filings show sustained funding growth with reported revenue of approximately $694,000 (FY2023) and approximately $746,000 (FY2024), and charitable disbursements of roughly $405,000 in FY2024, enabling expanded local program delivery.

Regional environmental media and outreach

Created and operates Green Source Texas (Green Source DFW), a regional environmental news platform and programming outlet (including the Texas Green Report podcast), which provides ongoing sustainability education and community reporting.

Stewardship of Oak Cliff Earth Day

Took stewardship of the Oak Cliff Earth Day festival in 2018 and has hosted the annual community Earth Day celebration since, resuming full in-person festivals and related programming from 2023 onward and sustaining sponsor and community participation through 2024–2026.

At a glance

Total assets: $205K
Tax status: 501(c)(3)Private non-operating foundation
EIN: 20-4064644
Location: Dallas, TX
Website: www.memnosyneinstitute.org
On Mahalo since: May 2026

Financial figures from the IRS Business Master File, the IRS’s registry of tax-exempt organizations.

Recognition

Participation and presence in regional sustainability forums (listed participant/partner in EarthX programming in 2024).

Regular local media coverage and partnership recognition (Dallas-area outlets and Green Source Texas coverage) for environmental programming and community events.

Past philanthropic recognition and event partnerships, including selection for philanthropic acknowledgment by Women That Soar (2016) and organization of regional Sustainable Leadership awards via Green Source DFW.

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