Civic Intelligence

American Association of Neurosurgeons

EIN 36-2958324 • 501(c)3 • Rolling Meadows, IL

Profile

Founded in 1931 as the Harvey Cushing Society, the American Association of Neurosurgeons (AAN), doing business as AANS, is a scientific and educational association with over 10,509 members worldwide. The AAN is dedicated to advancing the specialty of neurological surgery in order to provide the highest quality of neurosurgical care to the public. All fellow members of the AAN are board certified by the American Board of Neurological Surgery, the Royal College of Physicians and Surgeons of Canada, or the Mexican Council of Neurological Surgery, A.C. Neurological surgery is the medical specialty concerned with the prevention, diagnosis, treatment and rehabilitation of disorders that affect the entire nervous system, including the spinal column, spinal cord, brain and peripheral nerves.

5550 Meadowbrook Industrial CourtRolling Meadows, IL 60008

www.aans.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

67th percentile

0.41x

Higher debt load relative to assets than 67% of similar nonprofits.

501(c)3 • $25M-$50M nonprofits • Source year 2024

Liabilities / Revenue

75th percentile

0.85x

Higher debt load relative to revenue than 75% of similar nonprofits.

501(c)3 • $25M-$50M nonprofits • Source year 2024

Net Margin

9th percentile

-24%

Higher net margin than 9% of similar nonprofits.

501(c)3 • $25M-$50M nonprofits • Source year 2024

Top Officer Pay

89th percentile

$677,599

Higher top officer pay than 89% of similar nonprofits.

Top officer pay equals 4.4% of source-year revenue.

501(c)3 • $25M-$50M nonprofits • Source year 2024

Asset Growth

2nd percentile

-49%

Faster asset growth than 2% of similar nonprofits.

501(c)3 • $25M-$50M nonprofits • Annualized from 2023 to 2024

Revenue Growth

60th percentile

12%

Faster revenue growth than 60% of similar nonprofits.

501(c)3 • $25M-$50M nonprofits • Annualized from 2023 to 2024

Assets

Down

$31,913,486

Down $30,644,425 (-49%) from 2023

Liabilities

Down

$13,037,599

Down $7,679,802 (-37%) from 2023

Net Assets

Down

$18,875,887

Down $22,964,623 (-55%) from 2023

Revenue

Up

$15,303,546

Up $1,684,540 (+12%) from 2023

Expenses

Up

$18,938,539

Up $1,862,741 (+11%) from 2023

Net Income

Down

-$3,634,993

Down $178,201 (-5.2%) from 2023

Trend Graphs

Balance Sheet Trend

Grouped bars show assets, liabilities, and net assets across loaded filings.

$80M$60M$40M$20M$0Assets 2014: $34,572,716Liabilities 2014: $8,677,769Net Assets 2014: $25,894,9472014Assets 2015: $30,322,503Liabilities 2015: $5,312,921Net Assets 2015: $25,009,5822015Assets 2016: $31,784,211Liabilities 2016: $6,870,444Net Assets 2016: $24,913,7672016Assets 2017: $33,833,471Liabilities 2017: $7,992,345Net Assets 2017: $25,841,1262017Assets 2018: $36,441,385Liabilities 2018: $10,112,322Net Assets 2018: $26,329,0632018Assets 2019: $35,741,148Liabilities 2019: $9,520,347Net Assets 2019: $26,220,8012019Assets 2020: $32,721,045Liabilities 2020: $10,707,438Net Assets 2020: $22,013,6072020Assets 2021: $41,529,336Liabilities 2021: $14,361,528Net Assets 2021: $27,167,8082021Assets 2022: $35,665,439Liabilities 2022: $10,695,176Net Assets 2022: $24,970,2632022Assets 2023: $62,557,911Liabilities 2023: $20,717,401Net Assets 2023: $41,840,5102023Assets 2024: $31,913,486Liabilities 2024: $13,037,599Net Assets 2024: $18,875,8872024

Highlighted filing

2024

Assets$31,913,486
Liabilities$13,037,599
Net Assets$18,875,887

Operations Trend

Revenue, expenses, and net income by year, with the latest filing highlighted.

$20M$10M$0-$10MRevenue 2014: $15,075,148Expenses 2014: $14,794,508Net Income 2014: $280,6402014Revenue 2015: $18,436,403Expenses 2015: $15,669,600Net Income 2015: $2,766,8032015Revenue 2016: $14,636,683Expenses 2016: $16,005,007Net Income 2016: -$1,368,3242016Revenue 2017: $16,487,175Expenses 2017: $16,896,534Net Income 2017: -$409,3592017Revenue 2018: $15,155,977Expenses 2018: $15,974,283Net Income 2018: -$818,3062018Revenue 2019: $16,696,213Expenses 2019: $17,980,981Net Income 2019: -$1,284,7682019Revenue 2020: $9,442,264Expenses 2020: $13,681,726Net Income 2020: -$4,239,4622020Revenue 2021: $10,342,533Expenses 2021: $11,412,409Net Income 2021: -$1,069,8762021Revenue 2022: $11,773,869Expenses 2022: $9,907,238Net Income 2022: $1,866,6312022Revenue 2023: $13,619,006Expenses 2023: $17,075,798Net Income 2023: -$3,456,7922023Revenue 2024: $15,303,546Expenses 2024: $18,938,539Net Income 2024: -$3,634,9932024

Highlighted filing

2024

Revenue$15,303,546
Expenses$18,938,539
Net Income-$3,634,993

Filings

Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Facts available. Structured filing facts are available, but richer extracted sections are limited.$31.9$13.0$18.9$15.3$18.9$3.63
2023XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$62.6$20.7$41.8$13.6$17.1$3.46
2022Facts available. Structured filing facts are available, but richer extracted sections are limited.$35.7$10.7$25.0$11.8$9.91$1.87
2021XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$41.5$14.4$27.2$10.3$11.4$1.07
2020XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$32.7$10.7$22.0$9.44$13.7$4.24
2019XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$35.7$9.52$26.2$16.7$18.0$1.28
2018XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$36.4$10.1$26.3$15.2$16.0$0.82
2017Facts available. Structured filing facts are available, but richer extracted sections are limited.$33.8$7.99$25.8$16.5$16.9$0.41
2016Detailed filing. Detailed filing data is available for this year.$31.8$6.87$24.9$14.6$16.0$1.37
2015XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$30.3$5.31$25.0$18.4$15.7$2.77
2014Detailed filing. Detailed filing data is available for this year.$34.6$8.68$25.9$15.1$14.8$0.28
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jul 1, 2023 to Jun 30, 2024
Signed
May 15, 2025
Return Version
2023v6.0
Gross Receipts
$20,625,928
Mission and Program Overview

Mission

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

Balance Sheet Detail
LineBeginningEndChange
Assets
Investments in Publicly Traded Securities$38,282,361$20,253,355▼ $18,029,006
Accounts Receivable$3,922,832$8,685,214▲ $4,762,382
Land, Buildings, and Equipment, Net$10,612,021$4,359,233▼ $6,252,788
Investments Other Securities$1,127,948$0▼ $1,127,948
Prepaid Expenses and Deferred Charges$1,661,813$680,937▼ $980,876
Inventories for Sale or Use$177,439$123,898▼ $53,541
Savings and Temporary Cash Investments$6,335,601$-2,408,099▼ $8,743,700
Total Assets$62,557,911$31,913,486▼ $30,644,425
Other Assets Total$437,896$218,948▼ $218,948
Liabilities
Accounts Payable and Accrued Expenses$19,377,723$10,560,692▼ $8,817,031
Deferred Revenue$1,339,626$2,453,311▲ $1,113,685
Other Liabilities$52$23,596▲ $23,544
Total Liabilities$20,717,401$13,037,599▼ $7,679,802
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$24,172,261$13,081,911▼ $11,090,350
Net Assets With Donor Restrictions$17,668,249$5,793,976▼ $11,874,273
Total Net Assets Fund Balance$41,840,510$18,875,887▼ $22,964,623
Total Liabilities and Net Assets / Fund Balance$62,557,911$31,913,486▼ $30,644,425

Asset Categories

AssetBook ValueDepreciationBasis
Buildings$2,129,558$2,707,426$4,836,984
Other Land Buildings$1,456,573$2,542,656$3,999,229
Equipment$-15,798$1,862,541$1,846,743
Land$788,900-$788,900

Endowment Activity

PeriodBeginningContrib.Gain/LossOther UsesEnd
2023$21,716,126-▲ $2,117,892-$23,726,194
2022$21,778,424---$21,716,126
2021$21,778,424---$21,778,424
2020$17,014,394-▲ $4,764,030-$21,778,424
2019$16,808,584$100,000▲ $107,562$1,752$17,014,394
Compensation and Service Providers

Employees

NameTitleFull / Part TimeBaseOtherTotal
Kathleen T CraigCEO (until 12/31/23)PT$623,276$54,323$677,599
Katherine O OrricoChief Executive OfficerPT$312,014$68,386$380,400
Stefan P RykowskiVP, Registries & Data ServicesFT$203,146$43,578$246,724
Carol JonesChief Financial OfficerPT$190,681$34,214$224,895
Adrienne R MortimerSenior Manager, Legislative AffairsFT$153,505$49,197$202,702
Cathy J HillSenior Manager, Regulatory AffairFT$163,069$38,629$201,698
Kimberly JacquesChief Strategy OfficerFT$152,186$38,685$190,871
Ann Marie BraySenior, Director of Event StrategyFT$139,437$22,086$161,523
Spencer BoneDirector of MarketingFT$135,743$24,620$160,363
William T JohnAccounting ManagerFT$109,867$47,959$157,826

Board Members and Trustees

NameTitle
E Sander ConnollyAANS Incoming President-Elect
Ann R StroinkAANS Past President
Anthony L AsherAANS President
Jacques J MorcosAANS President-Elect
John Joseph KnightlyAANS Vice President
Domagoj CoricDirector-at-Large
Jason P SheehanDirector-at-Large
Joseph S ChengDirector-at-Large
Marjorie C WangDirector-at-Large
Richard W ByrneDirector-at-Large
Stacey C WolfeDirector-at-Large
Mark E LinskeyRegional Director
Mark R IantoscaRegional Director
Sharon Woods WebbRegional Director
Shaun Thomas O'LearyRegional Director
E Antonio ChioccaAANS Secretary
Sepideh Amin-HanjaniAANS Treasurer
Revenue and Support

Revenue Composition

Contributions and Grants
$308,693
Program Service Revenue
$12,577,866
Investment Income
$2,089,296
Other Revenue
$327,691
All Other Contributions
$308,693
Change in Net Assets
$-3,634,993
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$11,051,180
Salaries, Compensation, and Employee Benefits$7,841,619
Grants and Similar Amounts Paid$45,740
Professional Fundraising Fees$0
Total Fundraising Expense$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Conferences and Meetings$3,298,341$563,234-$3,861,575
Other Salaries and Wages$2,109,707$1,657,627-$3,767,334
Current Officers, Directors, Trustees, and Key Employees$1,120,526$880,413-$2,000,939
Fees for Services Other$1,499,348$51,757-$1,551,105
Other Employee Benefits$675,172$530,493-$1,205,665
Fees for Services Management-$1,013,124-$1,013,124
Travel$441,602$264,015-$705,617
Information Technology$37,966$497,935-$535,901
Payroll Taxes$284,744$223,727-$508,471
Pension Plan Contributions$201,158$158,052-$359,210
Depreciation Depletion$5,872$336,002-$341,874
Office Expenses$179,903$113,682-$293,585
Advertising$131,225$99,672-$230,897
Occupancy-$193,104-$193,104
Other Expenses$1,532,702$183,000-$183,000
Insurance$47,556$134,401-$181,957
Fees for Services Legal-$162,251-$162,251
Fees for Service Investment Mgmnt Fees-$125,067-$125,067
All Other Expenses-$95,198-$95,198
Grants to Domestic Individuals$44,740--$44,740
Fees for Services Accounting-$44,223-$44,223
Foreign Grants$1,000--$1,000
Total Functional Expenses$11,611,562$7,326,977$0$18,938,539
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$0
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Debt and Bond Financing

Other Reported Liabilities

LiabilityAmount
Due to Related Parties$23,596
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Annual disclosure for covered persons
Yes
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
Yes
Other officer compensation reviewed
No
Conflict-of-interest policy
Yes
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No

Governance Explanations

Form 990, Part VI, Section A, line 6

All Members of the American Association of Neurological Surgeons (AANS) shall be considered Members of American Association of Neurosurgeons (AAN). The Members elected to the AANS shall be divided into eleven classes: 1) Fellow 2) Provisional 3) International 4) Associate 5) Allied 6) Lifetime 7) Candidate 8) International Candidate 9) Honorary 10) Affiliate 11) Student Only Fellows, Provisional, and Lifetime Members may vote. Only Fellows may hold office.

Form 990, Part VI, Section A, line 7A

The Officers and Directors shall be nominated and elected by the Members.

Form 990, Part VI, Section B, line 11B

The Form 990 is reviewed within the Association's Accounting Department by the Accounting Manager and Chief Financial Officer. Input for Form 990 inclusion is submitted to the Association's tax preparer by the Accounting Department. After Form 990 is completed by the Association's tax preparer, the Form 990 is again reviewed by both the Accounting Manager and Chief Financial Officer prior to filing with the IRS.

Form 990, Part VI, Section B, line 12C

As a CME provider accredited by the ACCME, the AAN requires all individuals (and their significant others) in a position to influence and/or control the content of AAN directly and jointly sponsored CME activities to disclose to the AAN and subsequently to learners that the individual either has no relevant financial relationship or has any relevant financial relationships with a commercial interest. All disclosure information must be provided to AAN CME activity participants prior to the beginning of the CME activity. If a disclosure is not completed, the individual will not participate in the activity. All potential conflicts of interest identified through review of the disclosure form must be resolved in order for individuals in a position to influence and/or control CME content to be confirmed for the educational assignment. The resolution process and documents must be documented in the CME activity file. A conflict of interest disclosure must also be completed yearly by AAN Committee Members. Anyone who does not complete the disclosure will not participate on the Committee.

Form 990, Part VI, Section B, line 15A

The Chief Executive Officer's annual compensation is subject to the provisions in their employment contract: The Executive shall receive a base salary, paid in accordance with the Association's normal payroll practices. Effective as of January 1, 2021, the Executive's base salary shall be at an annual rate of $500,000, and shall increase three percent (3%) on January 1st of each year. In addition, during the period of November 1, 2018 through December 31, 2018, the Association and the Executives agree to meet in good faith to renegotiate the Executive's base salary to determine any other appropriate increase. The Association may award the Executive bonuses in such amounts and at such times as the Association's Review Committee, in his or her sole discretion, deems appropriate. This process is documented. Compensation for the CFO and Associate Executive Directors is determined by the Chief Executive Officer. The CEO's basis for determining compensation is based on market data including the Association Forum of Chicagoland.

Form 990, Part VI, Section C, line 19

The organization makes its governing documents, conflict of interest policy and financial statements available to the public upon request for the same period of disclosure as set forth in IRC Section 6104(d).

Filing and Contact Details

Filer

Filer Name
American Association of Neurosurgeons
EIN
36-2958324
Phone
8473780500
Address
5550 Meadowbrook Industrial Court, Rolling Meadows, IL 60008
Doing Business As
Aans

Signing Officer

Name
Carol A Jones
Title
CFO
Phone
8473780500
Signed
2025-05-15
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Katherine O Orrico
Formed
1956
Legal Domicile
Il
Voting Board Members
17
Independent Board Members
17
Employees
64
Volunteers
385

Preparer

Firm
Rsm US Llp
Address
30 South Wacker Dr Suite 3300, Chicago, IL 60606-3392
Preparer
Ariel Garcia
Phone
3126343400
Supplemental Narrative

Additional Explanations

Form 990, Part XI, line 9:

Transfer from American Association of Neurological Surgeons, Inc. 2,401,828.

Financial Statement Notes

Part III, Line 4:

The Organization maintains a collection of books, documents, and memorabilia related to the history and development of the neurological sciences. Such items are used in historical exhibits, research projects by members, and select items are available on-line for viewing.

Part V, Line 4:

The Association's endowment funds are used according to the intended stipulation(s) set forth by the donor.

Raw XML AppendixShowing 400 of 966 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990/Form990PartVIISectionAGrp/PersonNm0Anthony L Asher
IRS990/Form990PartVIISectionAGrp/PersonNm1Jacques J Morcos
IRS990/Form990PartVIISectionAGrp/PersonNm2E Sander Connolly
IRS990/Form990PartVIISectionAGrp/PersonNm3John Joseph Knightly
IRS990/Form990PartVIISectionAGrp/PersonNm4E Antonio Chiocca
IRS990/Form990PartVIISectionAGrp/PersonNm5Sepideh Amin-Hanjani
IRS990/Form990PartVIISectionAGrp/PersonNm6Ann R Stroink
IRS990/Form990PartVIISectionAGrp/PersonNm7Richard W Byrne
IRS990/Form990PartVIISectionAGrp/PersonNm8Joseph S Cheng
IRS990/Form990PartVIISectionAGrp/PersonNm9Domagoj Coric
IRS990/Form990PartVIISectionAGrp/PersonNm10Jason P Sheehan
IRS990/Form990PartVIISectionAGrp/PersonNm11Marjorie C Wang
IRS990/Form990PartVIISectionAGrp/PersonNm12Stacey C Wolfe
IRS990/Form990PartVIISectionAGrp/PersonNm13Shaun Thomas O'Leary
IRS990/Form990PartVIISectionAGrp/PersonNm14Mark E Linskey
IRS990/Form990PartVIISectionAGrp/PersonNm15Mark R Iantosca
IRS990/Form990PartVIISectionAGrp/PersonNm16Sharon Woods Webb
IRS990/Form990PartVIISectionAGrp/PersonNm17Kathleen T Craig
IRS990/Form990PartVIISectionAGrp/PersonNm18Carol Jones
IRS990/Form990PartVIISectionAGrp/PersonNm19Katherine O Orrico
IRS990/Form990PartVIISectionAGrp/PersonNm20Kimberly Jacques
IRS990/Form990PartVIISectionAGrp/PersonNm21Cathy J Hill
IRS990/Form990PartVIISectionAGrp/PersonNm22Stefan P Rykowski
IRS990/Form990PartVIISectionAGrp/PersonNm23Adrienne R Mortimer
IRS990/Form990PartVIISectionAGrp/PersonNm24Spencer Bone
IRS990/Form990PartVIISectionAGrp/PersonNm25Ann Marie Bray
IRS990/Form990PartVIISectionAGrp/PersonNm26William T John
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IRS990/Form990PartVIISectionAGrp/TitleTxt0AANS President
IRS990/Form990PartVIISectionAGrp/TitleTxt1AANS President-Elect
IRS990/Form990PartVIISectionAGrp/TitleTxt2AANS Incoming President-Elect
IRS990/Form990PartVIISectionAGrp/TitleTxt3AANS Vice President
IRS990/Form990PartVIISectionAGrp/TitleTxt4AANS Secretary
IRS990/Form990PartVIISectionAGrp/TitleTxt5AANS Treasurer
IRS990/Form990PartVIISectionAGrp/TitleTxt6AANS Past President
IRS990/Form990PartVIISectionAGrp/TitleTxt7Director-at-Large
IRS990/Form990PartVIISectionAGrp/TitleTxt8Director-at-Large
IRS990/Form990PartVIISectionAGrp/TitleTxt9Director-at-Large
IRS990/Form990PartVIISectionAGrp/TitleTxt10Director-at-Large
IRS990/Form990PartVIISectionAGrp/TitleTxt11Director-at-Large
IRS990/Form990PartVIISectionAGrp/TitleTxt12Director-at-Large
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IRS990/Form990PartVIISectionAGrp/TitleTxt14Regional Director
IRS990/Form990PartVIISectionAGrp/TitleTxt15Regional Director
IRS990/Form990PartVIISectionAGrp/TitleTxt16Regional Director
IRS990/Form990PartVIISectionAGrp/TitleTxt17CEO (until 12/31/23)
IRS990/Form990PartVIISectionAGrp/TitleTxt18Chief Financial Officer
IRS990/Form990PartVIISectionAGrp/TitleTxt19Chief Executive Officer
IRS990/Form990PartVIISectionAGrp/TitleTxt20Chief Strategy Officer
IRS990/Form990PartVIISectionAGrp/TitleTxt21Senior Manager, Regulatory Affair
IRS990/Form990PartVIISectionAGrp/TitleTxt22VP, Registries & Data Services
IRS990/Form990PartVIISectionAGrp/TitleTxt23Senior Manager, Legislative Affairs
IRS990/Form990PartVIISectionAGrp/TitleTxt24Director of Marketing
IRS990/Form990PartVIISectionAGrp/TitleTxt25Senior, Director of Event Strategy
IRS990/Form990PartVIISectionAGrp/TitleTxt26Accounting Manager
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IRS990/MissionDesc0The AANS promotes the highest quality of patient care and advances the specialty of neurological surgery.
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