Question 1

Is Mark Alan Sinclair Foundation a tax-exempt 501(c)(3)?

Accepted Answer

Yes — Mark Alan Sinclair Foundation is recognised by the IRS as a 501(c)(3) organisation (EIN 20-5371872). The IRS recognised Mark Alan Sinclair Foundation as tax-exempt in September 2006.

Question 2

What is Mark Alan Sinclair Foundation's EIN?

Accepted Answer

Mark Alan Sinclair Foundation's Employer Identification Number (EIN) is 20-5371872. The EIN was assigned by the IRS in September 2006. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.

Question 3

What does Mark Alan Sinclair Foundation do?

Accepted Answer

N/a

Question 4

Where is Mark Alan Sinclair Foundation located?

Accepted Answer

Mark Alan Sinclair Foundation is located at 2867 Pradera Road, Carmel, CA, 93923.

Question 5

When was Mark Alan Sinclair Foundation founded or recognised by the IRS?

Accepted Answer

Mark Alan Sinclair Foundation was recognised by the IRS as a tax-exempt organisation in September 2006. The IRS ruling date is the earliest authoritative date available for most US nonprofits.

Question 6

What is Mark Alan Sinclair Foundation's annual revenue?

Accepted Answer

On its most recent Form 990 (fiscal year 2025), Mark Alan Sinclair Foundation reported $26K in total revenue and $13K in total expenses.

Question 7

Has Mark Alan Sinclair Foundation been auto-revoked by the IRS?

Accepted Answer

No — Mark Alan Sinclair Foundation (EIN 20-5371872) does not appear on the IRS Auto-Revocation List. Givalgo Discover cross-references the IRS Auto-Revocation List on every profile load; if status changes, this page reflects it.

Question 8

Is Mark Alan Sinclair Foundation listed in IRS Publication 78?

Accepted Answer

Yes — Mark Alan Sinclair Foundation is listed in IRS Publication 78 as an organisation eligible to receive tax-deductible charitable contributions. Pub 78 status is the canonical IRS signal that donations to an org are deductible.

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Mark Alan Sinclair Foundation

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