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Illinois · Public charity

American Association of Neurosurgeons Inc

The AANS promotes the highest quality of patient care and advances the specialty of neurological surgery.

$191k
Granted FY2025(still arriving)
1
Itemized grants FY2025
2
Organizations funded FY2023
100%
First-time grantees FY2023
Read the full brief
Itemized, FY2025
$93k
The rest is grants the schedule does not break out
Median grant, FY2025
$92,500
Largest grant, FY2025
$92,500
Organizations funded a year
1 to 4
FY2017 to FY2023
States reached, FY2025
1
Total assets, FY2025
$43M

How open it is to new grantees

In FY2023, 100% of the organizations American Association of Neurosurgeons Inc funded were first-time grantees, receiving 100% of its grant dollars.

New vs renewed · share of each year

In FY2023, 0% of grant dollars renewed an existing relationship; $15k went to new ones.

50%100%’18’19’20’21’23
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’21’23
EducationOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving1$93k100%
FY20232$15k100%
FY20212$16k50%
FY20201$12k0%
FY20191$8k0%
FY20183$27k67%
FY20174$45kn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Health$208kEducation$8k

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
The Society of Neurological Surgeons$92,5001n/a
Congress of Neurological Surgeons Inc$50,79950%
Regents of the University of Michigan$20,0001n/a
Rector & Visitors of the University of Virginia$7,5001n/a
University of Chicago$7,50010%
University of Wisconsin Madison$7,5001n/a
Wake Forest University Health Sciences$7,50010%
University of Florida$7,5001n/a
University of Rochester$7,50010%
Oregon Health & Science University$7,5001n/a

Compare American Association of Neurosurgeons Inc with peer funders

About American Association of Neurosurgeons Inc

How much does American Association of Neurosurgeons Inc give?
American Association of Neurosurgeons Inc reported 1 itemized grants totaling $92,500, out of $190,742 in total grant expense reported on the return in its FY2025 IRS filing. It funded between 1 and 4 organizations a year over FY2017 to FY2023.
What does American Association of Neurosurgeons Inc fund?
By grant dollars over FY2017 to FY2025, its largest causes are Health (97%), Education (3%).
Who are American Association of Neurosurgeons Inc's largest grantees?
By total granted over FY2017 to FY2025: The Society of Neurological Surgeons ($93k), Congress of Neurological Surgeons Inc ($51k), Regents of the University of Michigan ($20k).
Does American Association of Neurosurgeons Inc fund new organizations?
In FY2023, 100% of the organizations it funded were first-time grantees.
Where is American Association of Neurosurgeons Inc based?
American Association of Neurosurgeons Inc is based in IL.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 10 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990 e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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