Nonprofit · EIN 47-2052113
LOWELL OBSERVATORY FOUNDATION
Tax-exempt · FLAGSTAFF, AZ 86001
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $1,876,603 | $5,582,552 | -$3,705,949 | $11,143,496 | $0 | $11,143,496 |
| December 31, 2024 | 990 | $1,559,624 | $463,426 | $1,096,198 | $15,249,410 | $0 | $15,249,410 |
| December 31, 2023 | 990 | $3,755,865 | $432,257 | $3,323,608 | $13,980,770 | $0 | $13,980,770 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $555,334
- Program service revenue
- $0
- Investment income
- $1,321,269
- Net gain from sales of assets
- $1,128,527
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $5,511,530
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Accounting fees
- $8,950
- Program services (functional)
- $5,511,530
- Management and general (functional)
- $59,405
- Fundraising (functional)
- $11,617
Balance sheet and other
- Total assets, start of year
- $15,249,410
- Total assets, end of year
- $11,143,496
- Total liabilities, end of year
- $0
- Net assets, end of year
- $11,143,496
- Publicly traded securities
- $7,061,960
- Net assets without donor restrictions
- $194,734
- Net assets with donor restrictions
- $10,948,762
- Gross receipts
- $6,361,773
- Employees
- 0
- Volunteers
- 9
- Year formed
- 2014
- State of legal domicile
- AZ
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| LESLIE CURRIE | EXECUTIVE DIRECTOR Officer | 2 | $0 | $190,704 | $25,367 |
| ANNE LABRUZZO | CHIEF FINANCIAL OFFICER Officer | 2 | $0 | $182,124 | $23,148 |
| W LOWELL PUTNAM | TRUSTEE Trustee or director | 2 | $0 | $12 | $21,057 |
| LOGAN BAYER | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| CAMILLE BIBLES | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| PATRICIA BOWDLER | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| DAVID D CHASE | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| W DAVID CONNELL | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| NEIL GAVIN | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| DONNA WEISTROP | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| MARJORIE MCCLANAHAN | BOARD CHAIR Trustee or director, Officer | 2 | $0 | $0 | $0 |
| GEORGE PUTNAM III | BOARD VICE-CHAIR Trustee or director, Officer | 2 | $0 | $0 | $0 |
990 for the year ended December 31, 2024: 14 people
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| LESLIE CURRIE | EXECUTIVE DIRECTOR Officer | 2 | $0 | $188,531 | $15,640 |
| ANNE LABRUZZO | CHIEF FINANCIAL OFFICER Officer | 2 | $0 | $176,555 | $22,166 |
| W LOWELL PUTNAM | TRUSTEE Trustee or director | 2 | $0 | $6 | $18,678 |
| LOGAN BAYER | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| CAMILLE BIBLES | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| PATRICIA BOWDLER | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| STEPHEN W BROWN | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| DAVID D CHASE | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| W DAVID CONNELL | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| NEIL GAVIN | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| VIRGINIA G GIOVALE | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| DONNA WEISTROP | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| MARJORIE MCCLANAHAN | BOARD CHAIR Trustee or director, Officer | 2 | $0 | $0 | $0 |
| GEORGE PUTNAM III | BOARD VICE-CHAIR Trustee or director, Officer | 2 | $0 | $0 | $0 |
990 for the year ended December 31, 2023: 11 people
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| ANN T ACTOR | EXECUTIVE DIRECTOR Officer | 2 | $0 | $172,107 | $21,549 |
| ANNE LABRUZZO | CHIEF FINANCIAL OFFICER Officer | 2 | $0 | $162,474 | $30,844 |
| W LOWELL PUTNAM | TRUSTEE Trustee or director | 2 | $0 | $6 | $25,356 |
| CAMILLE BIBLES | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| STEPHEN W BROWN | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| DAVID D CHASE | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| W DAVID CONNELL | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| VIRGINIA G GIOVALE | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| DONNA WEISTROP | TRUSTEE Trustee or director | 2 | $0 | $0 | $0 |
| MARJORIE MCCLANAHAN | BOARD CHAIR Trustee or director, Officer | 2 | $0 | $0 | $0 |
| GEORGE PUTNAM III | BOARD VICE-CHAIR Trustee or director, Officer | 2 | $0 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 1400 W MARS HILL RD, FLAGSTAFF, AZ 86001-4470
- In care of
- % W LOWELL PUTNAM
- Principal officer (990 for 2025)
- MARJORIE MCCLANAHAN, 1400 W MARS HILL ROAD, FLAGSTAFF, AZ 860014470
- Signed the 990
- ANNE LABRUZZO, CFO
- Phone
- (928) 774-3358
- Website
- FOUNDATION.LOWELL.EDU
- Return prepared by
- BEACHFLEISCHMAN PLLC
Mission
TO SUSTAIN AND ENHANCE LOWELL OBSERVATORY'S MISSION OF RESEARCH AND EDUCATION BY GENERATING PERPETUAL FINANCIAL SUPPORT.
Program accomplishments
- THE LOWELL OBSERVATORY FOUNDATION (LOF) ACCEPTS GIFTS FOR ENDOWED FUNDS AND MANAGES THE FUNDS TO SUPPORT THE OBSERVATORY'S GENERAL OPERATIONS AND THE GROWTH OF THE ENDOWED FUNDS. IN 2025, THE FOUNDATION RECEIVED SEVERAL GENEROUS GIFTS, INCLUDING $319,000 TO SUSTAIN THE OBSERVATORY'S LIBRARY AND ARCHIVES. THE FOUNDATION ALSO RECEIVED AN ADDITIONAL $100,000 TO GROW THE COSMOLOGY RESEARCH ENDOWMENT. AS IN PAST YEARS, WE ALSO RECEIVED A NUMBER OF CONTRIBUTIONS TO GROW THE ADC ENDOWMENT. GIVEN UNCERTAIN MARKET TRENDS AND GLOBAL CONFLICTS, THE NEW GIFTS TO THE FOUNDATION IN 2025 WILL HELP GUARD AGAINST POTENTIAL CORRECTIONS OR DOWNTURNS IN 2026.Expenses $5,511,530 · grants $5,511,530
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 47-2052113
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Supporting organization, Type I
- Donations deductible (Pub 78)
- Supporting organization, 50% limit
- Exempt since
- 2015
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U11)
- Assets (IRS master file)
- $11,143,496
- Income (IRS master file)
- $6,361,773
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $1,876,603 | $5,582,552 | $11,143,496 | XML |
| 990 | December 2024 | $1,559,624 | $463,426 | $15,249,410 | XML |
| 990 | December 2023 | $3,755,865 | $432,257 | $13,980,770 | XML |
| 990 | December 2022 | $587,737 | $379,919 | $9,574,343 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2019 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 47-2052113).
Questions about LOWELL OBSERVATORY FOUNDATION
- What is the EIN of LOWELL OBSERVATORY FOUNDATION?
- The employer identification number (EIN) of LOWELL OBSERVATORY FOUNDATION is 47-2052113.
- Is LOWELL OBSERVATORY FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2015.
- Are donations to LOWELL OBSERVATORY FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Supporting organization, 50% limit).
- Which annual return does LOWELL OBSERVATORY FOUNDATION file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of LOWELL OBSERVATORY FOUNDATION due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did LOWELL OBSERVATORY FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of LOWELL OBSERVATORY FOUNDATION?
- The 990 for the year ended December 31, 2025 names MARJORIE MCCLANAHAN.
- Who are the officers and directors of LOWELL OBSERVATORY FOUNDATION?
- The 990 for the year ended December 31, 2025 lists 12 people; 0 received compensation from the organization.
- How much revenue does LOWELL OBSERVATORY FOUNDATION have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $1,876,603, expenses of $5,582,552 and total assets of $11,143,496 at year end.
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