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SLEEP RESEARCH SOCIETY

EIN 23-7125856 DARIEN, IL

Largest nonprofits in Illinois

Revenue 2025
$1,676,119
Expenses 2025
$1,556,892

Program services were 57.7% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
Classification
2800
Street
2510 N FRONTAGE RD

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Other organizations at this address

5 other organizations in the IRS Business Master File list the same street address. matched by us

We match the street line and ZIP code as the IRS gives them, ignoring case and outer spaces and nothing else, so "AVE" and "AVENUE" count as different streets and this list can miss some. A shared address can mean related organizations or a shared office, but it can also be a registered agent, a mail drop or a service provider holding mail for unrelated clients. It is not, by itself, evidence that two organizations are connected.

Mission and programs · 2025

Mission

DISSEMINATION OF RESEARCH DIRECTED TOWARD THE STUDY OF SLEEP AND ITS DISORDERS, PROMOTING INTERACTION AMONG SCIENTISTS IN THE AREA OF RESEARCH.

  • PUBLICATION OF JOURNAL SLEEP - JOURNAL SLEEP IS THE LEADING PEER-REVIEWED JOURNAL IN SLEEP AND CIRCADIAN SCIENCE, AND INCLUDES ORIGINAL FINDINGS AND ANALYSIS RELATED TO SLEEP DISORDERS, MEDICAL DYSFUNCTIONS DURING SLEEP, CLINICAL INVESTIGATIONS, THERAPEUTIC TRIALS, PHYSIOLOGIC EVENTS, ANATOMIC STRUCTURES AND MOLECULAR COMPONENTS UNDERLYING NORMAL AND ABNORMAL SLEEP, PSYCHOLOGICAL AND PSYCHOPHYSIOLOGICAL RESEARCH AND THE PHARMACOLOGY OF SLEEP.

    Expenses $161,713 · Revenue $204,576

  • CONFERENCES - SLEEP IS THE PREMIER WORLD FORUM FOR THE PRESENTATION AND DISCUSSION OF THE LATEST DEVELOPMENTS IN CLINICAL SLEEP MEDICINE AND SLEEP AND CIRCADIAN SCIENCE. THE SLEEP MEETING PROVIDES EVIDENCE-BASED EDUCATION TO ADVANCE THE SCIENCE AND CLINICAL PRACTICE OF SLEEP MEDICINE, DISSEMINATES CUTTING-EDGE SLEEP AND CIRCADIAN RESEARCH, PROMOTES THE TRANSLATION OF BASIC SCIENCE INTO CLINICAL PRACTICE, AND FOSTERS THE FUTURE OF THE FIELD BY PROVIDING CAREER DEVELOPMENT OPPORTUNITIES AT ALL LEVELS.

    Expenses $220,124 · Revenue $278,470

  • MEMBERSHIP SERVICES EQUIPPING SCIENTISTS TO MAXIMIZE THEIR PROFESSIONAL POTENTIAL BY FOSTERING THE INVESTIGATION OF SLEEP DISORDERS AND PROVIDING FORUMS FOR THE EXCHANGE OF KNOWLEDGE PERTAINING TO SLEEP. MEMBERSHIP INCLUDES OPPORTUNITIES FOR EDUCATION AND TRAINING, RESOURCES FOR PROFESSIONAL DEVELOPMENT, ACCESS TO LATEST SCIENTIFIC RESEARCH, FUNDING OPPORTUNITIES, AND RECOGNITION FOR YOUR EXPERTISE THROUGH THE OLDEST PROFESSIONAL SOCIETY IN THE FIELD OF SLEEP RESEARCH.

    Expenses $389,462 · Revenue $492,692

  • Training

    Expenses $127,153 · Revenue $160,855

As filed on the 2025 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Daniel Buysse

    President

    Total calculated
    $25,000
    From this org
    $25,000
    From related orgs
    $0
    Other
    $0
    Hours/week
    1
  • Stephanie J Crowley

    Secretary/Treasurer

    Total calculated
    $10,000
    From this org
    $10,000
    From related orgs
    $0
    Other
    $0
    Hours/week
    1
  • Chiara Cirelli

    President-Elect

    Total calculated
    $5,000
    From this org
    $5,000
    From related orgs
    $0
    Other
    $0
    Hours/week
    1
  • Namni Goel

    Immediate Past President

    Total calculated
    $5,000
    From this org
    $5,000
    From related orgs
    $0
    Other
    $0
    Hours/week
    1
  • Cathy Alessi

    Director

    Total calculated
    $0
    Hours/week
    1
  • Dayna Johnson

    Director

    Total calculated
    $0
    Hours/week
    1
  • Fiona Baker

    Director

    Total calculated
    $0
    Hours/week
    1
  • Julio Fernandez-Mendoza

    Director

    Total calculated
    $0
    Hours/week
    1
  • Megan E Petrov

    Director

    Total calculated
    $0
    Hours/week
    1
  • Michael Grandner

    Director

    Total calculated
    $0
    Hours/week
    1
  • Phillip Cheng

    Director

    Total calculated
    $0
    Hours/week
    1
  • Rebecca Spencer

    Director

    Total calculated
    $0
    Hours/week
    1
  • Miranda M Lim

    Director (end 6/25)

    Total calculated
    $0
    Hours/week
    1
  • Philip Gehrman

    Director (end 6/25)

    Total calculated
    $0
    Hours/week
    1
  • Suzanne M Bertisch

    Director (end 6/25)

    Total calculated
    $0
    Hours/week
    1
  • John A Noel

    Executive Director

    Total calculated
    $0
    Hours/week
    40

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2025
    Revenue
    $1,676,119
    Expenses
    $1,556,892
    Contributions
    $266,272
    Grants paid
    $0
  • 2023
    Revenue
    $1,213,585
    Expenses
    $1,301,023
    Contributions
    $235,083
    Grants paid
    $0
  • 2022
    Revenue
    $1,064,300
    Expenses
    $957,106
    Contributions
    $60,000
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $1,025,545
    Expenses
    $816,005
    Assets (EOY)
    $4,291,686
  • 2020 · 990

    Revenue
    $768,607
    Expenses
    $873,126
    Assets (EOY)
    $3,907,388
  • 2019 · 990

    Revenue
    $1,383,449
    Expenses
    $1,222,336
    Assets (EOY)
    $3,922,659
  • 2018 · 990

    Revenue
    $948,727
    Expenses
    $900,008
    Assets (EOY)
    $3,950,197
  • 2017 · 990

    Revenue
    $857,464
    Expenses
    $872,020
    Assets (EOY)
    $3,842,227
  • 2016 · 990

    Revenue
    $1,167,884
    Expenses
    $896,996
    Assets (EOY)
    $3,791,081
  • 2015 · 990

    Revenue
    $613,529
    Expenses
    $688,375
    Assets (EOY)
    $3,742,656
  • 2014 · 990

    Revenue
    $513,333
    Expenses
    $559,940
    Assets (EOY)
    $3,899,514
  • 2013 · 990

    Revenue
    $628,946
    Expenses
    $499,977
    Assets (EOY)
    $3,802,544
  • 2012 · 990

    Revenue
    not reported
    Expenses
    $607,912
    Assets (EOY)
    $3,485,196

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

No itemized grant names this organization as a recipient. Only grants over $5,000 are itemized, and only by filers of the full Form 990.

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared on its 2025 return

Declared as related by

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2025, the newest we have parsed for this organization.