MIDDENDORF FAMILY FOUNDATION
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Cite this
Plain text MIDDENDORF FAMILY FOUNDATION. furp.org, nonprofit organization profile, tax years 2014–2025. https://furp.org/org/middendorf-family-foundation-233069847. Retrieved 2026-11-03.
APA furp.org. (n.d.). MIDDENDORF FAMILY FOUNDATION [Nonprofit organization profile; tax years 2014–2025]. Retrieved November 3, 2026, from https://furp.org/org/middendorf-family-foundation-233069847
MLA “MIDDENDORF FAMILY FOUNDATION.” furp.org, tax years 2014–2025, https://furp.org/org/middendorf-family-foundation-233069847. Accessed 3 Nov. 2026.
Retrieved 2026-11-03; covers tax years 2014–2025. Data: furp.org, CC BY 4.0.
2025 · Form 990PF · revenue $1.2M · expenses $1.4M · assets $6.2M
- EIN
- 23-3069847
- Address
- PO BOX 1297, NEW YORK, NY 10008-1297
- NTEE code
- T21
- Exempt type
- 501(c)(3): charitable, religious, educational, scientific or literary (trust)
- Ruling date
- March 2001 (when the IRS recognized its exemption)
- IRS status
- Exempt (unconditional) (IRS Business Master File) IRS data ↗
- Tax-deductible donations
- Yes: listed in IRS Publication 78 (private foundation) Pub 78 ↗
- Foundation status
- Private non-operating foundation
- Cross-check
- ProPublica Nonprofit Explorer
Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).
People paid by the organization
4 people paid across every filing: current people first, then by total pay from this organization. Organizations counts every nonprofit each person appears on.
| Name | Latest title | Years | Latest year pay | Total pay from here | Organizations |
|---|---|---|---|---|---|
| Deutsche Bank Trust Company N A Institution | TRUSTEE | 2025 | $123,940 | $123,940 | 66 |
| Deutsche Trust Bank Cimpany N A Institution (former) | CURRENT TRUSTEE | 2020-2023 | $114,303 | $431,407 | 1 |
| Bank Of America Institution (former) | TRUSTEE | 2014-2018 | $82,527 | $310,291 | 4369 |
| Deutsche Trust Company Na Institution (former) | TRUSTEE | 2024 | $121,337 | $121,337 | 36 |
Officers and directors, no compensation reported
2 people listed on the returns with $0 (or no amount) in every compensation column: current people first. Hours are as filed on the latest return each person appears on.
| Name | Latest title | Years | Hrs/wk (latest) | Compensation | Organizations |
|---|---|---|---|---|---|
| Patricia A Middendorf | CO-TRUSTEE | 2014-2025 | 1 | $0 reported | 1 |
| Frank J Middendorf (former) | CO-TRUSTEE | 2014-2024 | 1 | $0 reported | 1 |
People by year
2025 · 2 people listed · 1 paid, $124K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| DEUTSCHE BANK TRUST COMPANY N A Institution | TRUSTEE | 1 | $123,940 | - | - | $123,940 | 66 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
2024 · 3 people listed · 1 paid, $121K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| DEUTSCHE TRUST COMPANY NA Institution | TRUSTEE | 3 | $121,337 | - | - | $121,337 | 36 |
| FRANK J MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
2023 · 3 people listed · 1 paid, $114K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| DEUTSCHE TRUST BANK CIMPANY N A Institution | CURRENT TRUSTEE | 1 | $114,303 | - | - | $114,303 | 1 |
| FRANK J MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
2022 · 3 people listed · 1 paid, $114K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| DEUTSCHE TRUST BANK CIMPANY N A Institution | CURRENT TRUSTEE | 1 | $114,324 | - | - | $114,324 | 1 |
| FRANK J MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
2021 · 3 people listed · 1 paid, $112K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| DEUTSCHE TRUST BANK CIMPANY N A Institution | CURRENT TRUSTEE | 1 | $112,289 | - | - | $112,289 | 1 |
| FRANK J MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
2020 · 3 people listed · 1 paid, $90K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| DEUTSCHE TRUST BANK CIMPANY N A Institution | CURRENT TRUSTEE | 1 | $90,491 | - | - | $90,491 | 1 |
| FRANK J MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
2018 · 3 people listed · 1 paid, $83K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| BANK OF AMERICA N A Institution | TRUSTEE | 1 | $82,527 | - | - | $82,527 | 4369 |
| FRANK J MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
2016 · 3 people listed · 1 paid, $77K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| BANK OF AMERICA N A Institution | TRUSTEE | 1 | $76,697 | - | - | $76,697 | 4369 |
| FRANK J MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
2015 · 3 people listed · 1 paid, $76K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| BANK OF AMERICA N A Institution | TRUSTEE | 1 | $75,874 | - | - | $75,874 | 4369 |
| FRANK J MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
2014 · 3 people listed · 1 paid, $75K
| Name | Title | Hrs/wk | From org | From related | Other | Total | Orgs |
|---|---|---|---|---|---|---|---|
| BANK OF AMERICA N A Institution | TRUSTEE | 1 | $75,193 | - | - | $75,193 | 4369 |
| FRANK J MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
| PATRICIA A MIDDENDORF | CO-TRUSTEE | 1 | $0 | - | - | $0 | 1 |
Highest-paid independent contractors
No independent contractors reported.
Who the money went to
Grants this organization reported paying: Schedule I Part II of the Form 990, or the grants-paid list on the 990-PF. Open a year for every recipient. Recipients link to their own page when the grant names an EIN we have (990-PF grants list no EIN, so those link only on an exact, unique name and state). Grants to individuals are counted; their names are not shown.
2025 · 12 grants to organizations · $1.3M
2024 · 13 grants to organizations · $975K
2023 · 12 grants to organizations · $825K
2022 · 13 grants to organizations · $570K
2021 · 12 grants to organizations · $810K
2020 · 12 grants to organizations · $760K
2018 · 14 grants to organizations · $570K
2016 · 14 grants to organizations · $430K
2015 · 13 grants to organizations · $540K
2014 · 13 grants to organizations · $420K
Negative amounts are returned or refunded grants; they are listed last and left out of the totals of grants paid.
Who gave
Contributors listed on Schedule B of the Form 990-PF: name, city and state as filed (street addresses are not shown), with total and noncash contributions for the year. A link to an organization's page is tagged Fuzzy with its name-similarity score (0 to 1) when it rests on name and state; Schedule B lists no EIN, so no link here is an exact identifier match.
2025 · 1 contributor · $351K
| # | Contributor | Type | City, state | Total | Noncash | Source |
|---|---|---|---|---|---|---|
| 1 | PATRICIA A MIDDENDORF | Person | NEW YORK, NY | $351,400 | - | Form 990PF Sch. B, 2025 · filing |
2023 · 1 contributor · $349K
| # | Contributor | Type | City, state | Total | Noncash | Source |
|---|---|---|---|---|---|---|
| 1 | FRANK J MIDDENDORF | Person | NEW YORK, NY | $349,206 | $349,206 | Form 990PF Sch. B, 2023 · filing |
2022 · 1 contributor · $400K
| # | Contributor | Type | City, state | Total | Noncash | Source |
|---|---|---|---|---|---|---|
| 1 | FRANK J MIDDENDORF | Person | NEW YORK, NY | $400,004 | $400,004 | Form 990PF Sch. B, 2022 · filing |
2018 · 1 contributor · $341K
| # | Contributor | Type | City, state | Total | Noncash | Source |
|---|---|---|---|---|---|---|
| 1 | FRANK J MIDDENDORF | Person | PROVDENCE, RI | $341,129 | $341,129 | Form 990PF Sch. B, 2018 · filing |
2016 · 1 contributor · $299K
| # | Contributor | Type | City, state | Total | Noncash | Source |
|---|---|---|---|---|---|---|
| 1 | FRANK J MIDDENDORF | Person | PROVDENCE, RI | $299,252 | $299,252 | Form 990PF Sch. B, 2016 · filing |
2015 · 1 contributor · $498K
| # | Contributor | Type | City, state | Total | Noncash | Source |
|---|---|---|---|---|---|---|
| 1 | FRANK J MIDDENDORF | Person | PROVDENCE, RI | $497,962 | $497,962 | Form 990PF Sch. B, 2015 · filing |
Contributors listed here are as reported on the filing. Unusual is not the same as improper. Many of these patterns have ordinary explanations. Check the filing.
Finances
Newest first. Each filing: its name on one row, its figures on the row beneath. Greyed filings are superseded by a later return for the same period and are left out everywhere else on this page.
| Revenue | Expenses | Assets | Net assets | Contributions | Program revenue | Officer pay | Employees | Volunteers |
|---|---|---|---|---|---|---|---|---|
| 2025 · Form 990PF | ||||||||
| $1,151,815 | $1,407,700 | $6,233,935 | $6,233,935 | $351,400 | - | $123,940 | - | - |
| 2024 · Form 990PF | ||||||||
| $1,039,524 | $1,133,127 | $6,838,917 | $6,838,917 | - | - | $121,337 | - | - |
| 2023 · Form 990PF | ||||||||
| $1,659,955 | $950,756 | $6,980,428 | $6,980,428 | $349,206 | - | $114,303 | - | - |
| 2022 · Form 990PF | ||||||||
| $699,578 | $694,901 | $6,545,041 | $6,545,041 | $400,004 | - | $114,324 | - | - |
| 2021 · Form 990PF | ||||||||
| $91,574 | $934,415 | $6,970,672 | $6,970,672 | - | - | $112,289 | - | - |
| 2020 · Form 990PF | ||||||||
| $580,340 | $910,345 | $8,191,014 | $8,191,014 | - | - | $90,491 | - | - |
| 2018 · Form 990PF | ||||||||
| $859,547 | $666,478 | $8,250,484 | $8,250,484 | $341,129 | - | $82,527 | - | - |
| 2016 · Form 990PF | ||||||||
| $704,007 | $523,007 | $8,492,079 | $8,492,079 | $299,252 | - | $76,697 | - | - |
| 2015 · Form 990PF | ||||||||
| $1,235,202 | $625,438 | $8,611,139 | $8,611,139 | $497,962 | - | $75,874 | - | - |
| 2014 · Form 990PF | ||||||||
| $725,680 | $504,046 | $8,500,296 | $8,500,296 | - | - | $75,193 | - | - |
Funders of this organization
Not reported: no grants to this organization appear in the filings we have (tax years 2010 to 2025).
Nearby + Similar BETA
Organizations like this one: what they do and who they are linked to
Same category: NTEE code and revenue
Ranked without any AI: same NTEE code first, then the same NTEE group; then revenue within 2x, 5x or 10x; then the same state; then similar name and mission text. Same state only · More (100)
| Organization | State | NTEE | Latest revenue | Latest expenses | Top-paid title | Top pay | Why similar |
|---|---|---|---|---|---|---|---|
| LTGE FAMILY FOUNDATION | NY | T21 | $727,665 | $241,460 | Trustee | $0 | Same NTEE code T21, revenue within 2x, same state, similar name |
| KRAUS FAMILY FOUNDATION | NY | T21 | $987,433 | $2,324,830 | TRUSTEE | $0 | Same NTEE code T21, revenue within 2x, same state, similar name |
| ADELSON FAMILY FOUNDATION | NY | T21 | $1,877,694 | $817,833 | TRUSTEE | $0 | Same NTEE code T21, revenue within 2x, same state, similar name |
| FEIN ROSS FAMILY FOUNDATION | NY | T21 | $619,128 | $130,122 | PRESIDENT | $0 | Same NTEE code T21, revenue within 2x, same state, similar name |
| WYCKOFF FAMILY FOUNDATION INC | NY | T21 | $1,076,657 | $10,198,820 | PRESIDENT | $0 | Same NTEE code T21, revenue within 2x, same state, similar name |
| ALLEN A STEIN FAMILY FOUNDATION | NY | T21 | $1,166,381 | $668,520 | VP, DIRECTOR | $40,000 | Same NTEE code T21, revenue within 2x, same state, similar name |
| MCU FOUNDATION | NY | T21 | $1,122,953 | $164,607 | DIRECTOR (AS OF 08/2024) | $0 | Same NTEE code T21, revenue within 2x, same state |
| THOMAS D AND DENISE R STERN FAMILY FOUNDATION | NY | T21 | $1,895,647 | $1,654,193 | TRUSTEE | $0 | Same NTEE code T21, revenue within 2x, same state |
| M F K FOUNDATION INC | NY | T21 | $623,611 | $570,857 | Trustee | $0 | Same NTEE code T21, revenue within 2x, same state |
| PAJWELL FOUNDATION | NY | T21 | $952,621 | $346,480 | President | $0 | Same NTEE code T21, revenue within 2x, same state |
| ELSEVIER FOUNDATION | NY | T21 | $982,511 | $1,258,461 | EXTERNAL BOARD MEMBER | $0 | Same NTEE code T21, revenue within 2x, same state |
| HOLLIDAY FOUNDATION | NY | T21 | $626,281 | $374,329 | PRESIDENT | $0 | Same NTEE code T21, revenue within 2x, same state |
| CHESTER FOUNDATION TR | NY | T21 | $1,698,004 | $695,763 | TRUSTEE | $0 | Same NTEE code T21, revenue within 2x, same state |
| NATIONAL GRID FOUNDATION | NY | T21 | $2,113,602 | $5,546,659 | BOARD MEMBER | $2,103 | Same NTEE code T21, revenue within 2x, same state |
| WESTMINSTER FOUNDATION | NY | T21 | $716,355 | $1,040,068 | CHAIR | $0 | Same NTEE code T21, revenue within 2x, same state |
| JAPAN ICU FOUNDATION INC | NY | T21 | $1,453,761 | $1,287,856 | PRESIDENT & CEO | $244,079 | Same NTEE code T21, revenue within 2x, same state |
| SUSAN ISABEL FOUNDATION | NY | T21 | $774,392 | $733,661 | TRUSTEE | $0 | Same NTEE code T21, revenue within 2x, same state |
| MUTUAL OF AMERICA FOUNDATION | NY | T21 | $1,017,224 | $1,167,224 | CHAIRMAN OF THE BOARD, DIRECTOR | $0 | Same NTEE code T21, revenue within 2x, same state |
| ARDIAN US FOUNDATION INC | NY | T21 | $1,453,866 | $1,406,795 | DIRECTOR | $0 | Same NTEE code T21, revenue within 2x, same state |
| BERNARD BERGREEN FOUNDATION | NY | T21 | $1,825,179 | $95,451 | Director | $0 | Same NTEE code T21, revenue within 2x, same state |
| ZICHRON YONASON FOUNDATION | NY | T21 | $715,788 | $632,226 | TRUSTEE | $0 | Same NTEE code T21, revenue within 2x, same state |
| SCHLUMBERGER FOUNDATION INC | NY | T21 | $1,367,308 | $1,418,407 | CHAIRMAN | $0 | Same NTEE code T21, revenue within 2x, same state |
| CITY IN THE COMMUNITY FOUNDATION | NY | T21 | $1,174,150 | $1,343,172 | CHAIRMAN | $0 | Same NTEE code T21, revenue within 2x, same state |
| SIEBERT WILLIAMS SHANK FOUNDATION | NY | T21 | $869,007 | $892,633 | PRESIDENT | $10,000 | Same NTEE code T21, revenue within 2x, same state |
| LEIBOWITZ-GREENWAY FAM CHARITABLE FOUNDATION | NY | T21 | $842,164 | $993,056 | TRUSTEE | $0 | Same NTEE code T21, revenue within 2x, same state |
Who funds organizations like this
Grantors that funded the 100 most similar organizations. Ranked by total given to them. Foundations (990-PF) and donor-advised fund sponsors only. Same matching as Funders above (by EIN, or by name for foundations).
The full list · all similar organizations
Where the money went
Every expense line on each return, biggest first: Form 990 Part IX (with its program, management and fundraising columns), 990-EZ Part I, or 990-PF Part I. Event marks lines the organization itself describes as events. “Events” in each summary adds those lines, conferences and meetings, and the direct costs of fundraising events. Unusual is not the same as improper. Many of these patterns have ordinary explanations. Check the filing.
2025 · Form 990PF · $1,407,700 spent · pay $123,940 · grants $1,270,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $1,270,000 | 90.2% | |
| Pay: officers, directors, trustees | $123,940 | 8.8% | |
| Taxes | $12,746 | 0.9% | |
| Other expenses | $1,014 | 0.1% | |
| Total | $1,407,700 | 100% |
2024 · Form 990PF · $1,133,127 spent · pay $121,337 · grants $975,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $975,000 | 86.0% | |
| Pay: officers, directors, trustees | $121,337 | 10.7% | |
| Taxes | $33,644 | 3.0% | |
| Fees: legal | $2,058 | 0.2% | |
| Other expenses | $1,088 | 0.1% | |
| Total | $1,133,127 | 100% |
2023 · Form 990PF · $950,756 spent · pay $114,303 · grants $825,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $825,000 | 86.8% | |
| Pay: officers, directors, trustees | $114,303 | 12.0% | |
| Taxes | $10,407 | 1.1% | |
| Other expenses | $1,046 | 0.1% | |
| Total | $950,756 | 100% |
2022 · Form 990PF · $694,901 spent · pay $114,324 · grants $570,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $570,000 | 82.0% | |
| Pay: officers, directors, trustees | $114,324 | 16.5% | |
| Taxes | $9,531 | 1.4% | |
| Other expenses | $1,046 | 0.2% | |
| Total | $694,901 | 100% |
2021 · Form 990PF · $934,415 spent · pay $112,289 · grants $810,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $810,000 | 86.7% | |
| Pay: officers, directors, trustees | $112,289 | 12.0% | |
| Taxes | $10,748 | 1.2% | |
| Other expenses | $1,378 | 0.1% | |
| Total | $934,415 | 100% |
2020 · Form 990PF · $910,345 spent · pay $90,491 · grants $760,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $760,000 | 83.5% | |
| Pay: officers, directors, trustees | $90,491 | 9.9% | |
| Fees: accounting | $30,000 | 3.3% | |
| Taxes | $25,884 | 2.8% | |
| Fees: legal | $2,904 | 0.3% | |
| Other expenses | $1,066 | 0.1% | |
| Total | $910,345 | 100% |
2018 · Form 990PF · $666,478 spent · pay $82,527 · grants $570,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $570,000 | 85.5% | |
| Pay: officers, directors, trustees | $82,527 | 12.4% | |
| Taxes | $11,703 | 1.8% | |
| Fees: accounting | $1,250 | 0.2% | |
| Other expenses | $750 | 0.1% | |
| Fees: other professional | $248 | 0.0% | |
| Total | $666,478 | 100% |
2016 · Form 990PF · $523,007 spent · pay $76,697 · grants $430,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $430,000 | 82.2% | |
| Pay: officers, directors, trustees | $76,697 | 14.7% | |
| Taxes | $14,089 | 2.7% | |
| Fees: accounting | $1,250 | 0.2% | |
| Other expenses | $971 | 0.2% | |
| Total | $523,007 | 100% |
2015 · Form 990PF · $625,438 spent · pay $75,874 · grants $540,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $540,000 | 86.3% | |
| Pay: officers, directors, trustees | $75,874 | 12.1% | |
| Taxes | $6,677 | 1.1% | |
| Other expenses | $1,635 | 0.3% | |
| Fees: accounting | $1,250 | 0.2% | |
| Printing and publications | $2 | 0.0% | |
| Total | $625,438 | 100% |
2014 · Form 990PF · $504,046 spent · pay $75,193 · grants $420,000 · events $0
| Line | As described | Total | Share |
|---|---|---|---|
| Contributions, gifts, grants paid | $420,000 | 83.3% | |
| Pay: officers, directors, trustees | $75,193 | 14.9% | |
| Taxes | $6,578 | 1.3% | |
| Fees: accounting | $1,250 | 0.2% | |
| Other expenses | $1,023 | 0.2% | |
| Printing and publications | $2 | 0.0% | |
| Total | $504,046 | 100% |
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