Nonprofit · EIN 27-4313833
IAS
Tax-exempt · WASHINGTON, DC 20035
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $1,235,346 | $1,006,859 | $228,487 | $8,293,439 | $6,368,639 | $1,924,800 |
| December 31, 2024 | 990 | $2,791,572 | $2,413,670 | $377,902 | $11,312,751 | $9,460,053 | $1,852,698 |
| December 31, 2023 | 990 | $1,318,031 | $851,393 | $466,638 | $10,572,849 | $9,098,053 | $1,474,796 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $970,000
- of which government grants
- $940,000
- Program service revenue
- $0
- Investment income
- $265,346
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Legal fees
- $802
- Accounting fees
- $33,408
- Program services (functional)
- $940,000
- Management and general (functional)
- $66,859
Balance sheet and other
- Total assets, start of year
- $11,312,751
- Total assets, end of year
- $8,293,439
- Total liabilities, end of year
- $6,368,639
- Net assets, end of year
- $1,924,800
- Net assets without donor restrictions
- $1,894,800
- Net assets with donor restrictions
- $30,000
- Gross receipts
- $1,235,346
- Employees
- 0
- Volunteers
- 130
- Year formed
- 2010
- State of legal domicile
- DC
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, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | From related orgs |
|---|---|---|---|---|
| BIRGIT PONIATOWSKI | EXECUTIVE DIRECTOR Officer | 0.6 | $0 | $297,616 |
| EMMANUEL FLAMAND | SECRETARY Trustee or director, Officer | 0.8 | $0 | $217,012 |
| CAROLE BEILEAU | TREASURER Trustee or director, Officer | 0.1 | $0 | $187,214 |
| CHRIS BEYRER MD MPH | PRESIDENT Trustee or director, Officer | 0.1 | $0 | $0 |
| MITCHELL WARREN | VICE PRESIDENT Trustee or director, Officer | 0.1 | $0 | $0 |
| GREG MILLETT | MEMBER Trustee or director | 0.1 | $0 | $0 |
990 for the year ended December 31, 2024: 6 people
| Name | Title | Hours / week | Compensation | From related orgs |
|---|---|---|---|---|
| BIRGIT PONIATOWSKI | EXECUTIVE DIRECTOR Officer | 0.6 | $0 | $280,877 |
| EMMANUEL FLAMAND | SECRETARY Trustee or director, Officer | 0.8 | $0 | $204,806 |
| CAROLE BEILEAU | TREASURER Trustee or director, Officer | 0.1 | $0 | $176,684 |
| CHRIS BEYRER MD MPH | PRESIDENT Trustee or director, Officer | 0.1 | $0 | $0 |
| MITCHELL WARREN | VICE PRESIDENT Trustee or director, Officer | 0.1 | $0 | $0 |
| JENIFER KATES | TREASURER (THRU 7/23/24) Trustee or director, Officer | 0.1 | $0 | $0 |
990 for the year ended December 31, 2023: 5 people
| Name | Title | Hours / week | Compensation | From related orgs |
|---|---|---|---|---|
| BIRGIT PONIATOWSKI | EXECUTIVE DIRECTOR Officer | 0.6 | $0 | $223,527 |
| EMMANUEL FLAMAND | SECRETARY Trustee or director, Officer | 0.8 | $0 | $184,691 |
| CHRIS BEYRER MD MPH | PRESIDENT Trustee or director, Officer | 0.1 | $0 | $0 |
| MITCHELL WARREN | VICE PRESIDENT Trustee or director, Officer | 0.1 | $0 | $0 |
| JENIFER KATES | TREASURER Trustee or director, Officer | 0.1 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 65494, WASHINGTON, DC 20035-5494
- Principal officer (990 for 2025)
- CHRIS BEYRER, PO BOX 65494, WASHINGTON, DC 20035
- Signed the 990
- CHRIS BEYRER, PRESIDENT
- Phone
- (443) 807-0412
- Website
- HTTPS://WWW.IASOCIETY.ORG/
- Return prepared by
- RSM US LLP
Mission
TO PROVIDE CRITICAL PLATFORMS FOR PRESENTING NEW RESEARCH, SHARING BEST PRACTICES AND ADVANCING THE FIGHT AGAINST AIDS AND PROMOTING DIALOGUE, EDUCATION AND NETWORKING TO HELP CLOSE GAPS IN KNOWLEDGE AND EXPERTISE AT EVERY LEVEL OF THE RESPONSE TO AIDS.
Program accomplishments
- IAS 2025, THE 13TH INTERNATIONAL AIDS SOCIETY CONFERENCE ON HIV SCIENCE, TOOK PLACE IN KIGALI, RWANDA, AND VIRTUALLY FROM 13 TO 17 JULY 2025. DESPITE CHALLENGES CREATED BY SUDDEN FUNDING CUTS, ALMOST 4,000 PEOPLE CAME TOGETHER IN KIGALI AND VIRTUALLY, SHOWING THE RESILIENCE THAT DEFINES THE HIV RESPONSE AND A COMMITMENT TO PROTECTING GAINS MADE IN OVER 40 YEARS OF THIS PANDEMIC. IAS 2025 PROVIDED A FORUM FOR PARTICIPANTS TO REVIEW THE EARLY IMPACT OF US FUNDING CUTS AND DEBATE HOW THE HIV RESPONSE CAN ADAPT TO SHRINKING DONOR SUPPORT. SCIENTIFIC INNOVATION IN PREVENTION WAS ALSO AT THE FOREFRONT DURING IAS 2025, WITH THE RELEASE OF NEW WORLD HEALTH ORGANIZATION (WHO) GUIDELINES RECOMMENDING THE USE OF LONG-ACTING INJECTABLE LENACAPAVIR AS A PRE-EXPOSURE PROPHYLAXIS (PREP) OPTION AND THE PRESENTATION OF PROMISING DATA ON THE EXPERIMENTAL MONTHLY PREP AGENT, MK-8527. IAS 2025 SHOWCASED THE CENTRAL ROLE OF AFRICAN SCIENCE IN SHAPING THE GLOBAL HIV RESPONSE. THE CONFERENCE ALSO HIGHLIGHTED THE HOST COUNTRY'S ACHIEVEMENT IN REACHING THE 95-95-95 TARGETS FOR HIV DIAGNOSIS, TREATMENT AND VIRAL SUPPRESSION AND ITS SUCCESS IN TACKLING A MARBURG VIRUS OUTBREAK IN 2024. A TOTAL OF 5,257 ABSTRACTS WERE SUBMITTED TO IAS 2025, AND 2,016 WERE ACCEPTED, AN ACCEPTANCE RATE OF 38%. THE CONFERENCE FEATURED 31 ORAL ABSTRACT SESSIONS IN FIVE TRACKS AND 30 INVITED-SPEAKER SESSIONS, INCLUDING THREE PLENARIES, 22 SYMPOSIA AND TWO SPECIAL SESSIONS. ALONGSIDE THESE CONFERENCE SESSIONS, 36 SATELLITES AND SEVEN PRE-CONFERENCES OFFERED DELEGATES FOCUSED INSIGHTS INTO A WIDE VARIETY OF TOPICS.Expenses $940,000
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 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
- 27-4313833
- 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
- 2011
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Voluntary health associations and medical disciplines (G198)
- Assets (IRS master file)
- $8,293,439
- Income (IRS master file)
- $1,235,346
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $1,235,346 | $1,006,859 | $8,293,439 | XML |
| 990 | December 2024 | $2,791,572 | $2,413,670 | $11,312,751 | XML |
| 990 | December 2023 | $1,318,031 | $851,393 | $10,572,849 | XML |
| 990 | December 2022 | $1,318,959 | $1,037,320 | $12,906,658 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | 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 27-4313833).
Questions about IAS
- What is the EIN of IAS?
- The employer identification number (EIN) of IAS is 27-4313833.
- Is IAS tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2011.
- Are donations to IAS tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does IAS 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 IAS 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 IAS last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of IAS?
- The 990 for the year ended December 31, 2025 names CHRIS BEYRER.
- Who are the officers and directors of IAS?
- The 990 for the year ended December 31, 2025 lists 6 people; 0 received compensation from the organization.
- How much revenue does IAS have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $1,235,346, expenses of $1,006,859 and total assets of $8,293,439 at year end.
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All nonprofits in WASHINGTON · District of Columbia · Voluntary health associations and medical disciplines