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Person · officer / director

Duncan Sahner

Chair · Planting Fields Foundation

Chair at Planting Fields Foundation. Listed as an officer, director, or key employee across 1 organization on the Form 990 record.

This is me
Ambiguous identity This name matches 3 other individuals we could not verify as the same person. Each is kept as a separate record below — treat them as distinct people unless an explicit match is confirmed.
Organizations
1
Roles reported
1
Others who share this name
3

Who this is

Profile

The filed facts are verified from the IRS filings. The biography is compiled from public web sources and grounded to that filed record.

✓ Verified from filings
●
Reported as Chair of Planting Fields Foundation, based in Oyster Bay, NY.
Facts extracted directly from each organization's Form 990, Part VII.
Biography Web-sourced

Duncan Sahner serves as the Secretary for TUMAINI TANZANIA, a role he held from 2023 to 2024 according to IRS 990 records. He is a member of Tumaini Tanzania's U.S.-based Board of Directors.

Sahner has a long history with the organization, having made at least eight trips to Tanzania by 2018 since the organization's formation in 2007, demonstrating a deep and sustained commitment to its mission.

Compiled from public web sources (2 cited), grounded to the filed record.

Track record

Career & tenure

Real tenure, career, and education — from public web sources, what you need to vet a founder or leader beyond the filing window.

Tenure here
2023–2024

Affiliations

Organizations

Planting Fields Foundation Chair · $1.7M revenue · Oyster Bay, NYTO PRESERVE AND MAKE RELEVANT TO ALL AUDIENCES THE HERITAGE OF PLANTING FIELDS ARBORETUM STATE HISTORIC PARK, AN EARLY 20TH CENTURY LONG ISLAND GOLD…Filed FY2024, FY2023 · Source: Form 990, Part VII

Disambiguation

Other people named Duncan Sahner

Different individuals who share this name, separated by IRS Schedule R, mailing address, and shared-board evidence. The 990 carries no person identifier, so some may still be the same person.

D
Duncan Sahner 1 organization · New York, NYAvail Nyc
D
Duncan Sahner 1 organization · Falls Church, VATumaini Tanzania
D
Duncan Sahner 1 organization · New York, NYHorticultural Society of New York INC

Network

Serves alongside

Other officers, directors & key employees at this person's organizations, by latest reported compensation.

G
President & CEO · FY2024
$315K
A
Vice Chair · FY2024
A
Treasurer · FY2024
M
Secretary · FY2024
B
Trustee · FY2024
H
Trustee · FY2024
S
Trustee · FY2024
D
Trustee · FY2024
T
Trustee · FY2024
R
Trustee · FY2024
M
Trustee · FY2024
T
Trustee · FY2024

Network

Recommendations

Written by other verified members of the network — visible once you're a verified person yourself.

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Public data from IRS Form 990 e-file & the Business Master File. Individuals appear here because they were named as an officer, director, or key employee on a nonprofit's Form 990; people are grouped by name plus corroborating evidence (Schedule R, shared address, shared board members). · philanthropy.org