Nonprofit · EIN 84-6059504
ASPEN CENTER FOR PHYSICS
Tax-exempt · ASPEN, CO 81611
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| March 31, 2025 | 990 | $3,354,485 | $4,108,037 | -$753,552 | $8,471,391 | $749,234 | $7,722,157 |
| March 31, 2024 | 990 | $4,031,844 | $3,663,759 | $368,085 | $8,436,031 | $693,904 | $7,742,127 |
| March 31, 2023 | 990 | $2,793,154 | $2,827,761 | -$34,607 | $6,783,128 | $720,503 | $6,062,625 |
Financial details: 990 for the year ended March 31, 2025
Revenue
- Contributions, gifts and grants
- $1,043,823
- of which government grants
- $537,840
- Program service revenue
- $1,937,371
- Investment income
- $278,467
- Net rental income
- $52,500
- Other revenue
- $94,824
Expenses
- Grants and similar amounts paid
- $1,005,041
- Compensation of officers, directors and key employees
- $175,132
- Other salaries and wages
- $246,100
- Salaries, compensation and benefits (total)
- $485,560
- Professional fundraising fees
- $0
- Accounting fees
- $12,450
- Occupancy
- $104,205
- Depreciation
- $167,410
- Program services (functional)
- $3,741,112
- Management and general (functional)
- $362,070
- Fundraising (functional)
- $4,855
Balance sheet and other
- Total assets, start of year
- $8,436,031
- Total assets, end of year
- $8,471,391
- Total liabilities, end of year
- $749,234
- Net assets, end of year
- $7,722,157
- Land, buildings and equipment
- $999,712
- Publicly traded securities
- $6,025,659
- Net assets without donor restrictions
- $6,718,015
- Net assets with donor restrictions
- $1,004,142
- Gross receipts
- $3,354,485
- Employees
- 12
- Volunteers
- 150
- Year formed
- 1962
- State of legal domicile
- CO
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 March 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| AMANDA JENKINS | ADMIN VICE P Officer | 40 | $152,833 | $16,958 |
| HIROSI OOGURI | CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| JOSHUA FRIEMAN | CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| MATTHIAS TROYER | PRESIDENT Trustee or director, Officer | 1 | $0 | $0 |
| VICKY KALOGERA | VICE PRESIDE Trustee or director, Officer | 1 | $0 | $0 |
| ZOLTAN LIGETI | VICE PRESIDE Trustee or director, Officer | 1 | $0 | $0 |
| QIMIAO SI | TREASURER Trustee or director, Officer | 1 | $0 | $0 |
| ILYA MANDEL | ASST TREASUR Trustee or director, Officer | 1 | $0 | $0 |
| VIJAY BALASUBRAMANIAN | CORPORATE SE Trustee or director, Officer | 1 | $0 | $0 |
| LAURA REINA | SCIENTIFIC S Trustee or director, Officer | 1 | $0 | $0 |
| SUVI GEZARI | SCIENTIFIC S Trustee or director, Officer | 1 | $0 | $0 |
| JOSHUA SHAEVITZ | ASST SCIENTI Trustee or director, Officer | 1 | $0 | $0 |
| CSABA CSAKI | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| DANIEL FREED | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| EVALYN GATES | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
8 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ALEXANDER GROSBERG | TRUSTEE Trustee or director | 0.5 | $0 |
| ILONA NEMETH | TRUSTEE Trustee or director | 0.5 | $0 |
| ENRICO RAMIREZ-RUIZ | TRUSTEE Trustee or director | 0.5 | $0 |
| GIL REFAEL | TRUSTEE Trustee or director | 0.5 | $0 |
| WASHINGTON TAYLOR | TRUSTEE Trustee or director | 0.5 | $0 |
| RISA WECHSLER | TRUSTEE Trustee or director | 0.5 | $0 |
| CLARE YU | TRUSTEE Trustee or director | 0.5 | $0 |
| YAEL SHADMI | TRUSTEE Trustee or director | 0.5 | $0 |
990 for the year ended March 31, 2024: 21 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| AMANDA JENKINS | ADMIN VICE P Officer | 40 | $152,333 | $9,140 |
| HIROSI OOGURI | CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| MATTHIAS TROYER | PRESIDENT Trustee or director, Officer | 1 | $0 | $0 |
| VICKY KALOGERA | VICE PRESIDE Trustee or director, Officer | 1 | $0 | $0 |
| ZOLTAN LIGETI | VICE PRESIDE Trustee or director, Officer | 1 | $0 | $0 |
| QIMIAO SI | TREASURER Trustee or director, Officer | 1 | $0 | $0 |
| ILYA MANDEL | ASST TREASUR Trustee or director, Officer | 1 | $0 | $0 |
| GIL REFAEL | CORPORATE SE Trustee or director, Officer | 1 | $0 | $0 |
| VIJAY BALASUBRAMANIAN | SCIENTIFIC S Trustee or director, Officer | 1 | $0 | $0 |
| LAURA REINA | SCIENTIFIC S Trustee or director, Officer | 1 | $0 | $0 |
| SUVI GEZARI | ASST SCIENTI Trustee or director, Officer | 1 | $0 | $0 |
| CSABA CSAKI | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| DANIEL FREED | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| EVALYN GATES | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| ALEXANDER GROSBERG | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| DAVID R MORRISON | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| ILONA NEMETH | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| ENRICO RAMIREZ-RUIZ | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| WASHINGTON TAYLOR | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| RISA WECHSLER | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| CLARE YU | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
990 for the year ended March 31, 2023: 19 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| AMANDA JENKINS | ADMIN VICE P Officer | 40 | $133,333 | $8,375 |
| CSABA CSAKI | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| EVALYN GATES | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| ALEXANDER GROSBERG | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| DAVID R MORRISON | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| ENRICO RAMIREZ-RUIZ | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| WASHINGTON TAYLOR | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| RISA WECHSLER | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| CLARE YU | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| HIROSI OOGURI | CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| MATTHIAS TROYER | PRESIDENT Trustee or director, Officer | 1 | $0 | $0 |
| QIMIAO SI | TREASURER Trustee or director, Officer | 1 | $0 | $0 |
| VICKY KALOGERA | VICE PRESIDE Trustee or director, Officer | 1 | $0 | $0 |
| ZOLTAN LIGETI | VICE PRESIDE Trustee or director, Officer | 1 | $0 | $0 |
| GIL REFAEL | CORPORATE SE Trustee or director, Officer | 1 | $0 | $0 |
| VIJAY BALASUBRAMANIAN | SCIENTIFIC S Trustee or director, Officer | 1 | $0 | $0 |
| LAURA REINA | ASST SCIENTI Trustee or director, Officer | 1 | $0 | $0 |
| ILONA NEMETH | TRUSTEE Trustee or director | 0.5 | $0 | $0 |
| ILYA MANDEL | ASST TREASUR Trustee or director, Officer | 1 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 700 W GILLESPIE ST, ASPEN, CO 81611-1197
- Principal officer (990 for 2024)
- AMANDA JENKINS, 700 WEST GILLESPIE STREET, ASPEN, CO 81611
- Signed the 990
- AMANDA JENKINS, ADMIN VICE PRESIDENT
- Phone
- (970) 925-2585
- Website
- WWW.ASPENPHYS.ORG
- Return prepared by
- TAYLOR ROTH AND COMPANY
Mission
ASPEN CENTER FOR PHYSICS IS A SCIENTIFIC ORGANIZATION WHICH PROMOTES ORGANIZED RESEARCH IN PHYSICS, ASTROPHYSICS, AND RELATED FIELDS THROUGH PROGRAMS OF INDIVIDUAL AND COLLABORATIVE RESEARCH, WORKSHOPS, AND CONFERENCES, AS WELL AS PROMOTES THE EDUCATION OF THE GENERAL PUBLIC THROUGH PUBLIC LECTURES AND OTHER ACTIVITIES.
Program accomplishments
- SUMMER AND WINTER PROGRAMS: SINCE ITS INCEPTION IN 1962, ASPEN CENTER FOR PHYSICS HAS PROVIDED A UNIQUE PHYSICAL AND SCIENTIFIC ENVIRONMENT IDEALLY SUITED FOR STIMULATING INTERACTIONS, COLLABORATIONS, AND INNOVATION IN PHYSICS RESEARCH. FOR 16 WEEKS EACH SUMMER, MORE THAN 500 LEADING INTERNATIONAL RESEARCHERS, FREED FROM THE USUAL CONSTRAINTS AND DISTRACTIONS OF THEIR HOME INSTITUTIONS, COME TO ASPEN TO ENGAGE IN RESEARCH AT THE FOREFRONT OF THEIR FIELDS. RESEARCH IS CONDUCTED: (A) IN THE CONTEXT OF WORKSHOPS IN AREAS AT THE FOREFRONT OF PHYSICS RESEARCH; (B) IN SMALL GROUPS FOCUSED ON SPECIFIC PROJECTS; OR, (C) BY INDIVIDUAL INVESTIGATORS CARRYING OUT THEIR OWN RESEARCH. THE SCIENTIFIC PROGRAMS EMPHASIZE OPEN PROBLEMS AT THE CUTTING EDGE AND ARE DESIGNED TO MAXIMIZE INFORMAL INTERACTIONS WITHIN EACH AREA AND CROSS-FERTILIZATION BETWEEN DIFFERENT AREAS. WHILE CONTINUING TO PROVIDE LEADERSHIP IN THE CENTRAL AREAS OF PHYSICS (PARTICLE PHYSICS, ASTROPHYSICS, AND CONDENSED MATTER PHYSICS), ASPEN CENTER FOR PHYSICS HAS BEEN OPEN TO NEW DIRECTIONS IN PHYSICS AS WELL AS TO SCIENCE AT THE INTERFACE BETWEEN PHYSICS AND OTHER DISCIPLINES (BIOLOGY, CHEMISTRY, ENGINEERING, MATERIAL SCIENCE, AND MATHEMATICS). IN ADDITION, 8 ONE- WEEK WINTER CONFERENCES BRING TOGETHER UP TO 110 RESEARCHERS PER WEEK IN AREAS OF CURRENT INTEREST IN PHYSICS AND INTER-DISCIPLINARY PHYSICS RESEARCH. THE CENTER PROVIDES OFFICE SPACE, OFFICE SUPPLIES, MEETING SPACE, LIBRARY FACILITIES, AND NETWORK ACCESS TO ITS PARTICIPANTS. SUPPORT IS PROVIDED TO ALL INDIVIDUALS DURING THE SUMMER SESSION FOR WHOM LODGING IS ARRANGED BY THE CENTER. PHYSICISTS' SUMMER BILLS ARE REDUCED BY THE AMOUNT OF SUPPORT; OVERPAYMENTS ARE REFUNDED BY CHECK. WINTER SUPPORT IS USUALLY AWARDED TO JUNIOR SCIENTISTS AND THOSE WITH A DEMONSTRATED NEED IN ORDER TO ATTEND. DURING THE FISCAL YEAR ENDED MARCH 31, 2025 THERE WERE 561 SUMMER PARTICIPANTS (SUMMER 2024) AND 576 WINTER PARTICIPANTS (BETWEEN JANUARY AND MARCH 2025).Expenses $3,709,597 · grants $1,005,041 · revenue $1,937,371
- OUTREACH PROGRAM: ASPEN CENTER FOR PHYSICS OUTREACH PROGRAM INCLUDES MANY OPTIONS AND AVENUES FOR THE PUBLIC TO BECOME INFORMED ABOUT CUTTING-EDGE PHYSICS RESEARCH, AND TO ENGAGE CHILDREN AND YOUTH IN OPPORTUNITIES FOR FURTHER EDUCATION IN THE SCIENCES. (1) PUBLIC LECTURES. A CORE OUTREACH ACTIVITY FOR THE CENTER. RENOWNED PHYSICISTS DELIVER WINTER AND SUMMER LECTURES IN ASPEN VENUES DELINEATING THEIR CURRENT RESEARCH OR CURRENT SCIENTIFIC TOPICS OF GENERAL INTEREST. SUMMER ATTENDANCE AT 10 LECTURES WAS 1,163 PEOPLE. WINTER ATTENDANCE AT 8 LECTURES WAS 861. (2) HIGH SCHOOL MENTOR PROGRAM. ACP HIRES RISING SENIOR PHYSICS STUDENTS FROM 3-5 VALLEY HIGH SCHOOLS TO WORK FOR A SUMMER WEEK AT THE CENTER TO SEE WHAT THEORETICAL PHYSICISTS DO AND TO CHAT WITH 2 OR 3 PHYSICISTS ABOUT COLLEGE, CAREERS, AND/OR SCIENCE. ABOUT 14 PHYSICISTS AND STUDENTS PARTICIPATED IN 2024. (3) HIGH SCHOOL MONTHLY RADIO SHOW--RADIO PHYSICS. VALLEY HIGH SCHOOL PHYSICS STUDENTS FROM 3-5 SCHOOLS INTERVIEW PHYSICISTS ON A MONTHLY RADIO SHOW. THIS INTRODUCES THE STUDENTS TO SCIENCE, PUBLIC SPEAKING, AND INFORMS THE LISTENING PUBLIC ABOUT CURRENT PHYSICS TOPICS. THERE WERE 8 STUDENT AND PHYSICIST PARTICIPANTS FOR THIS FISCAL YEAR. (4) ALL PUBLIC LECTURES ARE RECORDED AND ALL VIDEOS ARE AVAILABLE FOR VIEWING ON THE ASPEN CENTER FOR PHYSICS YOUTUBE CHANNEL AND WITH LINKS FROM THE ACP WEBSITE. THERE ARE OVER 350 ACP SCIENTIFIC LECTURES AND INTERVIEWS AVAILABLE ONLINE AT NO CHARGE.Expenses $31,515
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 March, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | March 31, 2026 | August 17, 2026 | Not on file |
| 2024 | March 31, 2025 | August 15, 2025 | 990 on file |
| 2023 | March 31, 2024 | August 15, 2024 | 990 on file |
IRS record
- EIN
- 84-6059504
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1968
- Accounting year ends
- March
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U35Z)
- Assets (IRS master file)
- $8,471,391
- Income (IRS master file)
- $3,354,485
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | March 2025 | $3,354,485 | $4,108,037 | $8,471,391 | XML |
| 990 | March 2024 | $4,031,844 | $3,663,759 | $8,436,031 | XML |
| 990 | March 2023 | $2,793,154 | $2,827,761 | $6,783,128 | XML |
| 990 | March 2022 | $1,875,830 | $1,903,988 | $7,035,110 | IRS |
| 990 | March 2021 | – | – | – | IRS |
| 990 | March 2020 | – | – | – | IRS |
| 990 | March 2019 | – | – | – | IRS |
| 990 | March 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 84-6059504).
Questions about ASPEN CENTER FOR PHYSICS
- What is the EIN of ASPEN CENTER FOR PHYSICS?
- The employer identification number (EIN) of ASPEN CENTER FOR PHYSICS is 84-6059504.
- Is ASPEN CENTER FOR PHYSICS tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1968.
- Are donations to ASPEN CENTER FOR PHYSICS tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does ASPEN CENTER FOR PHYSICS 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 ASPEN CENTER FOR PHYSICS due?
- The return for tax year 2025 (the year ending March 31, 2026) is due August 17, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did ASPEN CENTER FOR PHYSICS last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended March 2025.
- Who is the principal officer of ASPEN CENTER FOR PHYSICS?
- The 990 for the year ended March 31, 2025 names AMANDA JENKINS.
- Who are the officers and directors of ASPEN CENTER FOR PHYSICS?
- The 990 for the year ended March 31, 2025 lists 23 people; 1 received compensation from the organization, the highest $152,833 (AMANDA JENKINS, ADMIN VICE P).
- How much revenue does ASPEN CENTER FOR PHYSICS have?
- On its 990 for the year ended March 31, 2025 it reported revenue of $3,354,485, expenses of $4,108,037 and total assets of $8,471,391 at year end.
Other nonprofits in ASPEN
- MUSIC ASSOCIATES OF ASPEN INC EIN 84-0445087 · last filed 990 for 2025
- JAZZ AT ASPEN-SNOWMASS EIN 84-1220222 · last filed 990 for 2025
- ASPEN COUNTRY DAY SCHOOL INC EIN 23-7033239 · last filed 990 for 2025
- DAVID GLICKMAN FAMILY FOUNDATION EIN 99-3588694 · last filed 990-PF for 2024
- LEWIS FOUNDATION EIN 41-2063101 · last filed 990-PF for 2024
- ASPEN VALLEY SKI-SNOWBOARD CLUB INC EIN 84-6042225 · last filed 990 for 2025
- ASPEN CENTER FOR ENVIRONMENTAL STUDIES EIN 23-7042291 · last filed 990 for 2025
- ASPEN RESORT ASSOCIATION INC EIN 84-0660680 · last filed 990 for 2025