Nonprofit · EIN 23-2659520
IOP PUBLISHING INCORPORATED
Tax-exempt · PHILADELPHIA, PA 19104
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2024 | 990 | $5,308,729 | $5,360,024 | -$51,295 | $1,661,584 | $323,333 | $1,338,251 |
| December 31, 2023 | 990 | $5,561,458 | $5,503,932 | $57,526 | $1,925,480 | $557,043 | $1,368,437 |
Financial details: 990 for the year ended December 31, 2024
Revenue
- Contributions, gifts and grants
- $0
- Program service revenue
- $5,324,837
- Investment income
- -$16,108
- Net gain from sales of assets
- -$16,108
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $745,447
- Compensation of officers, directors and key employees
- $1,713,438
- Other salaries and wages
- $1,030,833
- Salaries, compensation and benefits (total)
- $3,563,848
- Professional fundraising fees
- $0
- Legal fees
- $9,827
- Accounting fees
- $50,373
- Occupancy
- $114,131
- Travel
- $191,115
- Depreciation
- $36,777
- Program services (functional)
- $5,008,709
- Management and general (functional)
- $351,315
Balance sheet and other
- Total assets, start of year
- $1,925,480
- Total assets, end of year
- $1,661,584
- Total liabilities, end of year
- $323,333
- Net assets, end of year
- $1,338,251
- Land, buildings and equipment
- $16,275
- Gross receipts
- $5,324,837
- Employees
- 34
- Volunteers
- 5
- Year formed
- 1991
- State of legal domicile
- PA
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 | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| MS ANTONIA SEYMOUR | PRESIDENT Trustee or director, Officer | 1 | $0 | $665,094 | $0 |
| MR 1 TOM GRINYER | DIRECTOR Trustee or director, Officer | 0.1 | $0 | $357,656 | $0 |
| MS SHARICE COLLINS | VP, MARKETING (ENDED 03/24) Key employee | 35 | $244,383 | $0 | $3,916 |
| MR OLIVER CALLAGHAN | TREASURER (ENDED 03/24) Trustee or director, Officer | 3.5 | $0 | $233,840 | $0 |
| SUKHRAJ DHADWAR | DIRECTOR Trustee or director | 1 | $0 | $208,549 | $0 |
| MR GREGORY SCHRAFT | SALES EXECUTIVE Highest-paid employee | 35 | $153,083 | $0 | $47,619 |
| MR BENJAMIN REISMAN | SENIOR SALES MANAGER Highest-paid employee | 35 | $152,836 | $0 | $20,848 |
| MR ROBERT BERNIER | REGIONAL SALES MANAGER Highest-paid employee | 35 | $140,970 | $0 | $22,460 |
| MS JESSICA MACDONALD | SENIOR PUBLISHER Highest-paid employee | 35 | $122,575 | $0 | $17,907 |
| MS ASHLEY GASQUE | EBOOKS COMMISSIONING EDITOR Highest-paid employee | 35 | $123,528 | $0 | $8,724 |
| PROFESSOR DAVID DEPLY | DIRECTOR Trustee or director | 0.1 | $0 | $0 | $0 |
990 for the year ended December 31, 2023: 11 people
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| MS ANTONIA SEYMOUR | PRESIDENT Trustee or director, Officer | 1 | $0 | $576,571 | $0 |
| MR OLIVER CALLAGHAN | TREASURER Trustee or director, Officer | 3.5 | $0 | $354,077 | $0 |
| MR TOM GRYNER | DIRECTOR Trustee or director, Officer | 0.1 | $0 | $338,195 | $0 |
| MS SHARICE COLLINS | VICE PRESIDENT, MARKETING Key employee | 35 | $189,000 | $0 | $45,956 |
| SUKHRAJ DHADWAR | DIRECTOR Trustee or director | 1 | $0 | $191,100 | $0 |
| MR GREGORY SCHRAFT | SALES EXECUTIVE Highest-paid employee | 35 | $109,343 | $0 | $44,936 |
| MR MICHAEL WELLS | SR MARKETING MANAGER Highest-paid employee | 35 | $111,508 | $0 | $17,649 |
| MR BENJAMIN REISMAN | SENIOR SALES MANAGER Highest-paid employee | 35 | $108,040 | $0 | $19,294 |
| MR STAN SMITH | REGIONAL SALES MANAGER Highest-paid employee | 35 | $100,123 | $0 | $24,406 |
| MS ASHLEY GASQUE | EBOOKS COMMISSIONING EDITOR/PUBLISHER Highest-paid employee | 35 | $112,248 | $0 | $8,465 |
| PROFESSOR DAVID DEPLY | DIRECTOR Trustee or director | 0.1 | $0 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 3675 MARKET ST STE 200, PHILADELPHIA, PA 19104-2897
- In care of
- % SEAN PIDGEON
- Principal officer (990 for 2024)
- SUKHRAJ DHADWAR, 3675 MARKET STREET 200, PHILADELPHIA, PA 19104
- Signed the 990
- SUKHRAJ DHADWAR, TREASURER
- Phone
- (215) 627-0880
- Website
- WWW.IOPPUBLISHING.ORG
- Return prepared by
- CBIZ ADVISORS LLC
Mission
IOP PUBLISHING IS A WHOLLY OWNED SUBSIDIARY OF THE INSTITUTE OF PHYSICS. THE INSTITUTE IS A LEADING SCIENTIFIC SOCIETY PROMOTING PHYSICS. IT WORKS TO ADVANCE PHYSICS RESEARCH AND EDUCATION.
Program accomplishments
- IT IS THE MISSION OF THE ORGANIZATION TO PROMOTE PHYSICS AND PHYSICS EDUCATION WORLDWIDE. IOPP, INC. PROVIDES SUPPORT FOR THE PUBLISHING ACTIVITIES. IOP PUBLISHES MORE THAN 100 JOURNALS AND MAGAZINES, SOME OWNED BY IOP AND OTHERS PUBLISHED IN PARTNERSHIP WITH OTHER PRESTIGIOUS SOCIETIES AND RESEARCH ORGANIZATIONS.Expenses $5,008,709 · grants $745,447 · revenue $5,324,837
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
- 23-2659520
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Supporting organization (509(a)(3))
- Donations deductible (Pub 78)
- Supporting organization of unknown type
- Exempt since
- 2007
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U11)
- Assets (IRS master file)
- $1,661,584
- Income (IRS master file)
- $5,324,837
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2024 | $5,308,729 | $5,360,024 | $1,661,584 | XML |
| 990 | December 2023 | $5,561,458 | $5,503,932 | $1,925,480 | XML |
| 990 | December 2022 | $5,102,329 | $5,105,013 | $1,975,090 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
| 990 | 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 23-2659520).
Questions about IOP PUBLISHING INCORPORATED
- What is the EIN of IOP PUBLISHING INCORPORATED?
- The employer identification number (EIN) of IOP PUBLISHING INCORPORATED is 23-2659520.
- Is IOP PUBLISHING INCORPORATED tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2007.
- Are donations to IOP PUBLISHING INCORPORATED tax-deductible?
- Yes. It is listed in IRS Publication 78 (Supporting organization of unknown type).
- Which annual return does IOP PUBLISHING INCORPORATED 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 IOP PUBLISHING INCORPORATED 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 IOP PUBLISHING INCORPORATED 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 IOP PUBLISHING INCORPORATED?
- The 990 for the year ended December 31, 2024 names SUKHRAJ DHADWAR.
- Who are the officers and directors of IOP PUBLISHING INCORPORATED?
- The 990 for the year ended December 31, 2024 lists 11 people; 6 received compensation from the organization.
- How much revenue does IOP PUBLISHING INCORPORATED have?
- On its 990 for the year ended December 31, 2024 it reported revenue of $5,308,729, expenses of $5,360,024 and total assets of $1,661,584 at year end.
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