Nonprofit · EIN 42-1325722
B F SKINNER FOUNDATION
Tax-exempt · CAMBRIDGE, MA 02138
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $172,794 | $182,833 | -$10,039 | $282,397 | $6,342 | $276,054 |
| December 31, 2024 | 990-EZ | $176,010 | $135,089 | $40,921 | $152,346 | – | $152,346 |
| December 31, 2023 | 990 | $89,490 | $174,547 | -$85,057 | $337,826 | $33,522 | $304,304 |
| December 31, 2021 | 990 | $165,425 | $176,913 | -$11,488 | $389,022 | $2,841 | $386,181 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $113,389
- Program service revenue
- $33,244
- Investment income
- $9,280
- Net income from fundraising events
- $13,088
- Net income from sales of inventory
- $1,683
- Other revenue
- $2,110
Expenses
- Compensation of officers, directors and key employees
- $76,200
- Salaries, compensation and benefits (total)
- $98,356
- Professional fees and payments to contractors
- $17,909
- Occupancy
- $13,949
- Printing, publications and postage
- $70
- Other expenses
- $52,549
- Program services (functional)
- $34,917
Balance sheet and other
- Total assets, start of year
- $293,523
- Total assets, end of year
- $282,397
- Total liabilities, end of year
- $6,342
- Net assets, end of year
- $276,054
- Cash, savings and investments
- $121,119
- Gross receipts
- $172,794
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 | Other / benefits |
|---|---|---|---|---|
| Konstantin Evdokimov | Operations Director | 30 | $69,000 | $15,209 |
| Christy Evanko | Treasurer | 5 | $7,200 | $0 |
| Vincent Carbone | Board Member | 1 | $0 | $0 |
| Francesca degli Espinosa | Board Member | 1 | $0 | $0 |
| David Palmer | Board Member | 3 | $0 | $0 |
| David Roth | Board Member | 2 | $0 | $0 |
| Julie Vargas | Board Member | 2 | $0 | $0 |
| Kristina Tillman | Executive Director | 10 | $0 | $0 |
990-EZ for the year ended December 31, 2024: 1 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Joyce Battersby | President | 0 | $0 |
990 for the year ended December 31, 2023: 8 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| CHRISTY EVANKO | TREASURER Trustee or director, Officer | 5 | $4,200 |
| JOYCE TU | PRESIDENT Trustee or director, Officer | 5 | $0 |
| KRISTINA TILLMAN | DIRECTOR Trustee or director | 10 | $0 |
| DARLENE CRONE-TODD | DIRECTOR Trustee or director | 1 | $0 |
| FRANCESCA DEGLI ESPINOSA | DIRECTOR Trustee or director | 1 | $0 |
| DAVID ROTH | DIRECTOR Trustee or director | 1 | $0 |
| VINCE CARBONE | DIRECTOR Trustee or director | 1 | $0 |
| SYDNEY BERKMAN | VICE-PRESIDENT Trustee or director, Officer | 5 | $0 |
990 for the year ended December 31, 2021: 10 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LISA K TILLMAN | PRESIDENT Trustee or director, Officer | 20 | $30,000 |
| DEVON SUNDBERG | TREASURER AT 4/1/21 Trustee or director, Officer | 1.14 | $0 |
| JOYCE TU | VICE PRESIDENT/SECRETARY TO 9/25/21 Trustee or director, Officer | 1.7 | $0 |
| DARLENE CRONE-TODD | DIRECTOR Trustee or director | 0 | $0 |
| FRANCESCA DEGLI ESPINOSA | DIRECTOR Trustee or director | 0 | $0 |
| DAVID ROTH | DIRECTOR Trustee or director | 2.13 | $0 |
| JULIE S VARGAS PHD | DIRECTOR Trustee or director | 0 | $0 |
| VINCE CARBONE | DIRECTOR Trustee or director | 0 | $0 |
| EMALEY MCCULLOCH | SECRETARY AT 9/25/21 Trustee or director, Officer | 0 | $0 |
| JULIE S VARGAS PHD | TREASURER TO 3/31/21 Trustee or director, Officer | 6 | $0 |
Address and contacts
- Address (IRS master file)
- ONCE MIFFLIN PLACE SUITE 400, CAMBRIDGE, MA 02138-0000
- In care of
- % JULIE VARGAS
- Signed the 990-EZ
- Christine Evanko, Treasurer
- Phone
- (617) 661-9209
- Website
- www.bfskinner.org
Mission
To disseminate the works of BF Skinner.
Program accomplishments
- We republish his books and ensure they are available to behavior scientists and the public.Expenses $8,160
- We provide awards for behavioral science in his name.Expenses $3,500
- We attend conferences and put on events to disseminate the science and his works.Expenses $3,287
- We house an archival system of all his works and related items and provide to the public.Expenses $19,970
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 on file |
IRS record
- EIN
- 42-1325722
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1994
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $282,397
- Income (IRS master file)
- $186,257
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $172,794 | $182,833 | $282,397 | IRS |
| 990-EZ | December 2024 | $176,010 | $135,089 | $152,346 | XML |
| 990 | December 2023 | $89,490 | $174,547 | $337,826 | XML |
| 990 | December 2022 | $179,184 | $163,101 | $384,853 | IRS |
| 990 | December 2021 | $165,425 | $176,913 | $389,022 | XML |
| 990 | December 2020 | – | – | – | IRS |
| 990-EZ | December 2018 | – | – | – | IRS |
| 990-EZ | December 2017 | – | – | – | 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 42-1325722).
Questions about B F SKINNER FOUNDATION
- What is the EIN of B F SKINNER FOUNDATION?
- The employer identification number (EIN) of B F SKINNER FOUNDATION is 42-1325722.
- Is B F SKINNER FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1994.
- Are donations to B F SKINNER FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does B F SKINNER 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 B F SKINNER 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 B F SKINNER FOUNDATION 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 B F SKINNER FOUNDATION?
- The 990-EZ for the year ended December 31, 2025 lists 8 people; 2 received compensation from the organization, the highest $69,000 (Konstantin Evdokimov, Operations Director).
- How much revenue does B F SKINNER FOUNDATION have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $172,794, expenses of $182,833 and total assets of $282,397 at year end.
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