Nonprofit · EIN 83-3404154
CONSORTIUM FOR TOP-DOWN PROTEOMICS
Tax-exempt · CAMBRIDGE, MA 02142
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $51,007 | $46,143 | $4,864 | $6,036 | $0 | $6,036 |
| December 31, 2024 | 990-EZ | $34,005 | $40,280 | -$6,275 | $1,172 | $0 | $1,172 |
| December 31, 2023 | 990-EZ | $64,067 | $60,098 | $3,969 | $7,446 | $0 | $7,446 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $51,000
- Program service revenue
- $0
- Investment income
- $7
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $40,000
- Salaries, compensation and benefits (total)
- $0
- Professional fees and payments to contractors
- $40,000
- Occupancy
- $1,975
- Other expenses
- $4,168
- Program services (functional)
- $24,398
Balance sheet and other
- Total assets, start of year
- $1,172
- Total assets, end of year
- $6,036
- Total liabilities, end of year
- $0
- Net assets, end of year
- $6,036
- Cash, savings and investments
- $6,036
- Gross receipts
- $51,007
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-EZ for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Paul Danis | CEO, Director | 20 | $40,000 |
| Neil Kelleher | President, Director | 3 | $0 |
| Lloyd Smith | Treasurer, Director | 3 | $0 |
| Ying Ge | Secretary, Director | 3 | $0 |
| Jeff Agar | Director | 2 | $0 |
| Julia Chamot-Rooke | Director | 2 | $0 |
| Joe Loo | Director | 2 | $0 |
| Ljiljana PasaTolic | Director | 2 | $0 |
| Hartmut Schlueter | Director | 2 | $0 |
| Maria Martin | Director | 2 | $0 |
990-EZ for the year ended December 31, 2024: 10 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Paul Danis | CEO, Director | 16 | $36,000 |
| Neil Kelleher | President, Director | 3 | $0 |
| Lloyd Smith | Treasurer, Director | 3 | $0 |
| Ying Ge | Secretary, Director | 3 | $0 |
| Jeff Agar | Director | 2 | $0 |
| Julia Chamot-Rooke | Director | 2 | $0 |
| Joe Loo | Director | 2 | $0 |
| Ljiljana PasaTolic | Director | 2 | $0 |
| Hartmut Schlueter | Director | 2 | $0 |
| Maria Martin | Director | 2 | $0 |
990-EZ for the year ended December 31, 2023: 10 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Paul Danis | CEO, Director | 20 | $52,000 |
| Neil Kelleher | President, Director | 3 | $0 |
| Lloyd Smith | Treasurer, Director | 3 | $0 |
| Ying Ge | Secretary, Director | 3 | $0 |
| Jeff Agar | Director | 2 | $0 |
| Julia Chamot-Rooke | Director | 2 | $0 |
| Joe Loo | Director | 2 | $0 |
| Ljiljana PasaTolic | Director | 2 | $0 |
| Hartmut Schlueter | Director | 2 | $0 |
| Maria Martin | Director | 2 | $0 |
Address and contacts
- Address (IRS master file)
- 245 FIRST STREET SUITE 1800, CAMBRIDGE, MA 02142-1292
- In care of
- % PAUL DANIS
- Signed the 990-EZ
- Paul Danis, CEO
- Phone
- (617) 336-3280
- Website
- ctdp.org
Mission
Our Mission is to promote collaboration, education, and innovative research that will accelerate the comprehensive analysis of all human proteoforms. This progress will speed developments in the fields of diagnostics, therapeutics, environment, and energy through the detailed, accurate knowledge of proteoforms and their complexes.
Program accomplishments
- The Human Proteoform Project. We proposed this ambitious initiative to define the human proteome, that is, to generate a definitive reference set of the proteoforms produced from the genome. This is the critical next step in the quest to understand human health and disease. The program has built relationships and gathered support from important members of the research community.Expenses $9,229
- We delivered the monthly seminar series titled Proteoform Thursdays which highlight younger researchers in this arena. Over 800 people from 50 countries have attended these events which have covered a range of topics including cancer, antibodies, clinical testing, and plant cell biology.Expenses $10,613
- We planned and executed the 3rd International Symposium on Top-Down Proteomics in Hamburg, Germany August 26-28, 2025. The Symposium was attended by over 200 scientific leaders who are developing innovative technologies and methods that are transforming our understanding of human biology, ushering in the era of proteoform systems biology & medicine, and paving the way for the Human Proteoform Project.Expenses $4,556
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-EZ on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-EZ on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-EZ on file |
IRS record
- EIN
- 83-3404154
- 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
- 2020
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Voluntary health associations and medical disciplines (G99)
- Assets (IRS master file)
- $6,036
- Income (IRS master file)
- $51,007
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $51,007 | $46,143 | $6,036 | IRS |
| 990-EZ | December 2024 | $34,005 | $40,280 | $1,172 | IRS |
| 990-EZ | December 2023 | $64,067 | $60,098 | $7,446 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | 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 83-3404154).
Questions about CONSORTIUM FOR TOP-DOWN PROTEOMICS
- What is the EIN of CONSORTIUM FOR TOP-DOWN PROTEOMICS?
- The employer identification number (EIN) of CONSORTIUM FOR TOP-DOWN PROTEOMICS is 83-3404154.
- Is CONSORTIUM FOR TOP-DOWN PROTEOMICS tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2020.
- Are donations to CONSORTIUM FOR TOP-DOWN PROTEOMICS tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does CONSORTIUM FOR TOP-DOWN PROTEOMICS 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 CONSORTIUM FOR TOP-DOWN PROTEOMICS 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 CONSORTIUM FOR TOP-DOWN PROTEOMICS last file with the IRS?
- The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
- Who are the officers and directors of CONSORTIUM FOR TOP-DOWN PROTEOMICS?
- The 990-EZ for the year ended December 31, 2025 lists 10 people; 1 received compensation from the organization, the highest $40,000 (Paul Danis, CEO, Director).
- How much revenue does CONSORTIUM FOR TOP-DOWN PROTEOMICS have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $51,007, expenses of $46,143 and total assets of $6,036 at year end.
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All nonprofits in CAMBRIDGE · Massachusetts · Voluntary health associations and medical disciplines