CONGRESS OF NEUROLOGICAL SURGEONS FOUNDATION INC

As filed

Subsection

03

NTEE code

E192

Classification

1000

Street

10 N MARTINGALE RD STE 190

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

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

This address is a suite or unit (STE 190). Organizations that share one are often clients of the same office-services firm, accountant or registered agent rather than related to each other.

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.

• CONGRESS OF NEUROLOGICAL SURGEONS INC UNIVERSITY OF MICHIGAN

  EIN 52-1660107

• SOCIETY OF NEUROLOGICAL SURGEONS

  EIN 92-2594861

Mission and programs · 2025

• CNS FOUNDATION SUPPORTS CRITICAL RESEARCH, TRAINING, AND PRACTICE OPPORTUNITIES THAT ADVANCE UNDERSTANDING AND TREATMENT OF NEUROSURGICAL PATIENTS, IMPROVE THE DELIVERY OF NEUROSURGICAL CARE, EVALUATE THE EFFICACY OF NEUROSURGICAL TREATMENTS, AND EMPOWER NEUROSURGICAL LEADERS TO LEAD INTERDISCIPLINARY TEAMS IN THE DELIVERY OF QUALITY CARE.

  Expenses $410,463 · Grants $324,901 · Revenue $17,107

As filed on the 2025 return.

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.

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. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

• 2025

  Revenue

  $750,817

  Expenses

  $617,345

  Contributions

  $251,199

  Grants paid

  $324,901

• 2023

  Revenue

  $519,385

  Expenses

  $1,002,961

  Contributions

  $262,727

  Grants paid

  $656,046

• 2022

  Revenue

  $850,737

  Expenses

  $799,718

  Contributions

  $618,052

  Grants paid

  $618,073

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

  $1,356,360

  Expenses

  $275,463

  Assets (EOY)

  $4,387,598

• 2020 · 990

  Revenue

  $577,782

  Expenses

  $215,857

  Assets (EOY)

  $3,068,901

• 2018 · 990

  Revenue

  $998,059

  Expenses

  $13,252

  Assets (EOY)

  $1,240,186

• 2017 · 990-EZ

  Revenue

  $73,621

  Expenses

  $25,095

  Assets (EOY)

  $255,379

• 2016 · 990-EZ

  Revenue

  $48,259

  Expenses

  $3,686

  Assets (EOY)

  $206,853

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.

Form 990-N e-Postcard, tax year 2015

Tax period

1 September 2015 to 31 August 2016

Principal officer

Russell Lonser

Mailing address

10 N Martingale Rd Ste 190Schaumburg IL 60173

Website

cns.org

As filed, from the IRS e-Postcard file of 2 November 2026. The IRS publishes only each organization's most recent postcard, so earlier years are not shown. A 990-N carries no financial detail. The postcard also gives the principal officer's address, which is not shown here.

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

• CONGRESS OF NEUROLOGICAL SURGEONS INC UNIVERSITY OF MICHIGAN

  $200,000

  2022 · FELLOWSHIP GRANT/GENERAL SUPPORT

• CONGRESS OF NEUROLOGICAL SURGEONS INC UNIVERSITY OF MICHIGAN

  $55,000

  2023 · FELLOWSHIP GRANT/GENERAL SUPPORT

• DONOR ADVISED CHARITABLE GIVING

  $42,900

  2022 · HEALTH

• DONOR ADVISED CHARITABLE GIVING

  $37,750

  2023 · HEALTH

• DONOR ADVISED CHARITABLE GIVING

  $22,877

  2024 · HEALTH

• GLIOBLASTOMA FOUNDATION INC

  $10,000

  2024 · GLIOBLASTOMA RESEARCH

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.

Other IRS files