Person · officer / director

Marcus Siezing

Treasurer · The Allen Family Foundation INC

Treasurer at The Allen Family Foundation INC. Listed as an officer, director, or key employee across 4 organizations on the Form 990 record.

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Ambiguous identity This name matches 1 other individual 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

Roles reported

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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

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Reported as Treasurer of The Allen Family Foundation INC, based in New York, NY.

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Also listed as Treasurer of The Polg Foundation INC, uncompensated.

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Also listed as Treasurer of Clarence and Anne Dillon Dunwalke Trust, uncompensated.

Facts extracted directly from each organization's Form 990, Part VII.

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Affiliations

Organizations

Linked as the same person by IRS Schedule R, a shared officer mailing address, or shared fellow board members.

The Polg Foundation INC Treasurer · $3.4M revenue · New York, NYTHE PURPOSES FOR WHICH THE FOUNDATION IS FORMED ARE TO ADDRESS THE UNMET MEDICAL NEEDS OF PATIENS WITH POLG-RELATED DISORDERS WITH THE GOAL OF BEING…Filed FY2025, FY2024, FY2023, FY2022, FY2021 · Source: Form 990, Part VII

The Allen Family Foundation INC Treasurer · $2.4M revenue · New York, NYFiled FY2024, FY2023, FY2022, FY2021, FY2020, FY2019 · Source: Form 990, Part VII

Clarence and Anne Dillon Dunwalke Trust Treasurer · $2.0M revenue · New York, NYFiled FY2024, FY2023 · Source: Form 990, Part VII

Dillon Fund Vice President, Treasurer · $2.6M revenue · New York, NYFiled FY2024, FY2023, FY2022, FY2021 · Source: Form 990, Part VII

Disambiguation

Other people named Marcus Siezing

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.

Marcus Siezing 1 organization · New York, NYThe American-Scandinavian Foundation

Network

Serves alongside

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

Brian Tseng

Director / Cso · FY2025

$316K

Olivier Gerrits

Executive Director · FY2022

$226K

Samuel Seward

Executive Dir. · FY2024

$197K

Alexandra F Allen

President/Director · FY2024

Dorothy C Echodu

Vice President/Director · FY2024

Eileen B Kane

Secretary · FY2024

Andrew D Allen

VP of Finance/Director · FY2024

Director · FY2024

Director · FY2024

Director · FY2024

Director · FY2024

Director · FY2024

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