Nonprofit · EIN 31-0585917
DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY
Tax-exempt · DAYTON, OH 45414
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2024 | 990 | $7,773,993 | $5,013,607 | $2,760,386 | $23,245,276 | $732,657 | $22,512,619 |
| December 31, 2023 | 990 | $6,521,051 | $4,925,439 | $1,595,612 | $20,188,506 | $698,160 | $19,490,346 |
Financial details: 990 for the year ended December 31, 2024
Revenue
- Contributions, gifts and grants
- $4,685,647
- of which government grants
- $307,486
- Membership dues
- $529,696
- Program service revenue
- $1,816,563
- Investment income
- $1,128,515
- Net gain from sales of assets
- $679,013
- Net income from fundraising events
- -$13,453
- Net income from sales of inventory
- $140,859
- Other revenue
- $143,268
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $326,588
- Other salaries and wages
- $2,250,248
- Salaries, compensation and benefits (total)
- $3,016,770
- Professional fundraising fees
- $0
- Occupancy
- $203,091
- Travel
- $7,318
- Depreciation
- $569,311
- Program services (functional)
- $3,475,498
- Management and general (functional)
- $1,194,481
- Fundraising (functional)
- $343,628
Balance sheet and other
- Total assets, start of year
- $20,188,506
- Total assets, end of year
- $23,245,276
- Total liabilities, end of year
- $732,657
- Net assets, end of year
- $22,512,619
- Land, buildings and equipment
- $6,899,255
- Publicly traded securities
- $13,638,362
- Net assets without donor restrictions
- $5,819,695
- Net assets with donor restrictions
- $16,692,924
- Gross unrelated business income
- $18,952
- Gross receipts
- $9,308,073
- Employees
- 127
- Volunteers
- 216
- Year formed
- 1952
- State of legal domicile
- OH
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, 2024, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| TRACEY TOMME | PRESIDENT & CEO Officer | 40 | $197,472 | $4,497 |
| MICHAEL WESTENDORF | CFO Officer | 40 | $114,450 | $10,167 |
| JASON TRIMBACH | CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| STEVE HESS | VICE CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| GREGORY HOFFBAUER | TREASURER Trustee or director, Officer | 2 | $0 | $0 |
| CARISSA ROSS | SECRETARY Trustee or director, Officer | 2 | $0 | $0 |
| SCOTT BALLARD | TRUSTEE Trustee or director | 2 | $0 | $0 |
| JOHN BERAN | TRUSTEE Trustee or director | 2 | $0 | $0 |
| ADAMA DIAKHATE | TRUSTEE Trustee or director | 2 | $0 | $0 |
| CHERYL ENNIS | TRUSTEE Trustee or director | 2 | $0 | $0 |
| SHAWN FARRELL | TRUSTEE Trustee or director | 2 | $0 | $0 |
| DIANA FEATHERSTONE | TRUSTEE Trustee or director | 2 | $0 | $0 |
| ERIN HOLDEN | TRUSTEE Trustee or director | 2 | $0 | $0 |
| CHRISTOPHER JAMES | TRUSTEE Trustee or director | 2 | $0 | $0 |
| GLEN MCMURRY | TRUSTEE Trustee or director | 2 | $0 | $0 |
8 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| JEFFREY MILLER | TRUSTEE Trustee or director | 2 | $0 |
| KAILEY NOLAN | TRUSTEE Trustee or director | 2 | $0 |
| YASMEEN SOIN | TRUSTEE Trustee or director | 2 | $0 |
| MIA SPELLS | TRUSTEE Trustee or director | 2 | $0 |
| NORA STANG | TRUSTEE Trustee or director | 2 | $0 |
| MICHAEL STEMEN | TRUSTEE Trustee or director | 2 | $0 |
| JEFFREY TRZECIAK | TRUSTEE Trustee or director | 2 | $0 |
| RALPH WILCOXSON II | TRUSTEE Trustee or director | 2 | $0 |
990 for the year ended December 31, 2023: 23 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| TRACEY TOMME | PRESIDENT & CEO Officer | 40 | $187,085 | $4,278 |
| MICHAEL WESTENDORF | CFO Officer | 40 | $109,000 | $9,687 |
| JASON TRIMBACH | CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| JANET WIRTH | VICE CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| GREGORY HOFFBAUER | TREASURER Trustee or director, Officer | 2 | $0 | $0 |
| CARISSA ROSS | SECRETARY Trustee or director, Officer | 2 | $0 | $0 |
| STEPHANIE ADAMS-TAYLOR | TRUSTEE Trustee or director | 2 | $0 | $0 |
| CHERYL ENNIS | TRUSTEE Trustee or director | 2 | $0 | $0 |
| NORA STANG | TRUSTEE Trustee or director | 2 | $0 | $0 |
| DIANA FEATHERSTONE | TRUSTEE Trustee or director | 2 | $0 | $0 |
| YASMEEN SOIN | TRUSTEE Trustee or director | 2 | $0 | $0 |
| MICHAEL STEMEN | TRUSTEE Trustee or director | 2 | $0 | $0 |
| PAT MCDONALD | TRUSTEE Trustee or director | 2 | $0 | $0 |
| GLEN MCMURRY | TRUSTEE Trustee or director | 2 | $0 | $0 |
| SHAWN FARRELL | TRUSTEE Trustee or director | 2 | $0 | $0 |
| STEVE HESS | TRUSTEE Trustee or director | 2 | $0 | $0 |
| MIA SPELLS | TRUSTEE Trustee or director | 2 | $0 | $0 |
| JEFFREY TRZECIAK | TRUSTEE Trustee or director | 2 | $0 | $0 |
| ERIN HOLDEN | TRUSTEE Trustee or director | 2 | $0 | $0 |
| CHRISTOPHER JAMES | TRUSTEE Trustee or director | 2 | $0 | $0 |
| K RICHARD NIEHOFF | TRUSTEE Trustee or director | 2 | $0 | $0 |
| TERRY POSEY JR | TRUSTEE Trustee or director | 2 | $0 | $0 |
| RALPH WILCOXSON II | TRUSTEE Trustee or director | 2 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 2600 DEWEESE PKWY, DAYTON, OH 45414-5400
- Principal officer (990 for 2024)
- MICHAEL WESTENDORF, 2600 DEWEESE PARKWAY, DAYTON, OH 45414
- Signed the 990
- MICHAEL WESTENDORF, CHIEF FINANCIAL OFFICER
- Phone
- (937) 275-7431
- Website
- WWW.BOONSHOFTMUSEUM.ORG
- Return prepared by
- CLARK SCHAEFER HACKETT & CO
Mission
THE MISSION OF THE DAYTON SOCIETY OF NATURAL HISTORY IS TO CREATE AND PROVIDE MEANINGFUL AND ENTERTAINING LEARNING EXPERIENCES FOR CURIOUS MINDS TO ENGAGE WITH NATURAL HISTORY, SCIENCE, AND NATURE WHILE HONORING AND PRESERVING COLLECTIONS FOR FUTURE GENERATIONS.
Program accomplishments
- THE DAYTON SOCIETY OF NATURAL HISTORY CREATES AND PROVIDES MEANINGFUL AND ENTERTAINING LEARNING EXPERIENCES FOR CURIOUS MINDS TO ENGAGE WITH NATURAL HISTORY, SCIENCE, AND NATURE WHILE HONORING AND PRESERVING COLLECTIONS FOR FUTURE GENERATIONS. DSNH'S OPERATION OF THE BOONSHOFT MUSEUM OF DISCOVERY AND SUNWATCH INDIAN VILLAGE/ARCHAEOLOGICAL PARK PROVIDED INTERACTIVE LEARNING EXPERIENCES FOR ABOUT 246,192 VISITORS, EDUCATING AND ENLIGHTENING THEM ABOUT THE WONDERS OF THE WORLD THROUGH SCIENCE. IN 2024 THE BOONSHOFT MUSEUM OF DISCOVERY HAD 169,657 MEMBER AND GUEST VISITS; 47,922 SCHOOL CHILDREN VISITED THE MUSEUM; THE STEM-TO-YOU PROGRAM REACHED 21,443; AND 7,170 VISITED SUNWATCH INDIAN VILLAGE/ARCHAEOLOGICAL PARK.Expenses $3,475,498 · revenue $1,954,332
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 | Not 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
- 31-0585917
- 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
- 1958
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Arts, culture and humanities (A56Z)
- Assets (IRS master file)
- $23,245,276
- Income (IRS master file)
- $9,308,073
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2024 | $7,773,993 | $5,013,607 | $23,245,276 | IRS |
| 990-T | December 2024 | – | – | – | IRS |
| 990 | December 2023 | $6,521,051 | $4,925,439 | $20,188,506 | XML |
| 990-T | December 2023 | – | – | – | IRS |
| 990 | December 2022 | $5,113,992 | $4,412,377 | $18,633,500 | IRS |
| 990-T | December 2022 | – | – | – | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990-T | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990-T | December 2020 | – | – | – | 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 31-0585917).
Questions about DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY
- What is the EIN of DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY?
- The employer identification number (EIN) of DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY is 31-0585917.
- Is DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1958.
- Are donations to DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY 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 DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY due?
- The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2024.
- Who is the principal officer of DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY?
- The 990 for the year ended December 31, 2024 names MICHAEL WESTENDORF.
- Who are the officers and directors of DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY?
- The 990 for the year ended December 31, 2024 lists 23 people; 2 received compensation from the organization, the highest $197,472 (TRACEY TOMME, PRESIDENT & CEO).
- How much revenue does DAYTON SOCIETY OF NATURAL HISTORY DAYTON MUSEUM OF NATURAL HISTORY have?
- On its 990 for the year ended December 31, 2024 it reported revenue of $7,773,993, expenses of $5,013,607 and total assets of $23,245,276 at year end.
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