Civic Intelligence

System Dynamics Society Inc

EIN 22-2738769 • 501(c)3 • San Diego, CA

Profile

System Dynamics Society, Inc. is devoted to encouraging the development and use of system dynamics and systems thinking around the world. System dynamics is a computer-aided approach to policy analysis and design.

PO Box 12747San Diego, CA 92112

www.systemdynamics.org

Siviq Scores

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

Liabilities / Assets

47th percentile

0.05x

Higher debt load relative to assets than 47% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Source year 2024

Liabilities / Revenue

58th percentile

0.13x

Higher debt load relative to revenue than 58% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Source year 2024

Net Margin

66th percentile

14%

Higher net margin than 66% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Source year 2024

Top Officer Pay

Score unavailable

No value available

No filing with officer rows is available for this organization yet.

Asset Growth

76th percentile

18%

Faster asset growth than 76% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Annualized from 2023 to 2024

Revenue Growth

66th percentile

18%

Faster revenue growth than 66% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / Assets47th percentile

Assets

Up

$1,783,279

Up $270,195 (+18%) from 2023

Liabilities

Up

$93,259

Up $5,981 (+6.9%) from 2023

Net Assets

Up

$1,690,020

Up $264,214 (+19%) from 2023

Operations
Liabilities / Revenue58th percentileNet Margin66th percentile

Revenue

Up

$732,563

Up $110,999 (+18%) from 2023

Expenses

Up

$631,309

Up $59,090 (+10%) from 2023

Net Income

Up

$101,254

Up $51,909 (+105%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth76th percentile

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

$2.0M$1.5M$1.0M$500K$0Assets 2010: $864,113Liabilities 2010: $48,498Net Assets 2010: $815,6152010Assets 2011: $960,867Liabilities 2011: $59,836Net Assets 2011: $901,0312011Assets 2012: $1,164,865Liabilities 2012: $71,274Net Assets 2012: $1,093,5912012Assets 2013: $1,332,355Liabilities 2013: $71,077Net Assets 2013: $1,261,2782013Assets 2014: $1,379,337Liabilities 2014: $80,226Net Assets 2014: $1,299,1112014Assets 2015: $1,303,280Liabilities 2015: $88,932Net Assets 2015: $1,214,3482015Assets 2016: $1,269,114Liabilities 2016: $89,952Net Assets 2016: $1,179,1622016Assets 2017: $1,514,311Liabilities 2017: $82,069Net Assets 2017: $1,432,2422017Assets 2018: $1,222,405Liabilities 2018: $286,954Net Assets 2018: $935,4512018Assets 2019: $1,025,909Liabilities 2019: $90,909Net Assets 2019: $935,0002019Assets 2020: $1,211,640Liabilities 2020: $86,533Net Assets 2020: $1,125,1072020Assets 2021: $1,402,655Liabilities 2021: $56,677Net Assets 2021: $1,345,9782021Assets 2022: $1,328,861Liabilities 2022: $91,258Net Assets 2022: $1,237,6032022Assets 2023: $1,513,084Liabilities 2023: $87,278Net Assets 2023: $1,425,8062023Assets 2024: $1,783,279Liabilities 2024: $93,259Net Assets 2024: $1,690,0202024

Highlighted filing

2024

Assets$1,783,279
Liabilities$93,259
Net Assets$1,690,020
Open 2024 Filing

Operations Trend

Revenue Growth66th percentile

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

$1.0M$500K$0-$500KExpenses 2010: $410,4712010Expenses 2011: $498,4462011Expenses 2012: $530,6182012Revenue 2013: $553,071Expenses 2013: $527,607Net Income 2013: $25,4642013Revenue 2014: $556,755Expenses 2014: $591,139Net Income 2014: -$34,3842014Revenue 2015: $577,717Expenses 2015: $620,774Net Income 2015: -$43,0572015Revenue 2016: $472,699Expenses 2016: $603,540Net Income 2016: -$130,8412016Revenue 2017: $745,862Expenses 2017: $677,967Net Income 2017: $67,8952017Revenue 2018: $516,289Expenses 2018: $913,757Net Income 2018: -$397,4682018Revenue 2019: $463,175Expenses 2019: $643,881Net Income 2019: -$180,7062019Revenue 2020: $481,989Expenses 2020: $460,787Net Income 2020: $21,2022020Revenue 2021: $551,895Expenses 2021: $449,575Net Income 2021: $102,3202021Revenue 2022: $594,686Expenses 2022: $518,101Net Income 2022: $76,5852022Revenue 2023: $621,564Expenses 2023: $572,219Net Income 2023: $49,3452023Revenue 2024: $732,563Expenses 2024: $631,309Net Income 2024: $101,2542024

Highlighted filing

2024

Revenue$732,563
Expenses$631,309
Net Income$101,254
Open 2024 Filing

Filings

Most recent year

2024 • Form 990Detailed filing. Detailed filing data is available for this year.

Open filing
Assets
$1,783,279
Liabilities
$93,259
Net assets
$1,690,020
Revenue
$732,563
Expenses
$631,309
Net income
$101,254
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$1.78$0.09$1.69$0.73$0.63$0.10
2023XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.51$0.09$1.43$0.62$0.57$0.05
2022Detailed filing. Detailed filing data is available for this year.$1.33$0.09$1.24$0.59$0.52$0.08
2021Detailed filing. Detailed filing data is available for this year.$1.40$0.06$1.35$0.55$0.45$0.10
2020XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.21$0.09$1.13$0.48$0.46$0.02
2019XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.03$0.09$0.94$0.46$0.64$0.18
2018Detailed filing. Detailed filing data is available for this year.$1.22$0.29$0.94$0.52$0.91$0.40
2017Detailed filing. Detailed filing data is available for this year.$1.51$0.08$1.43$0.75$0.68$0.07
2016Detailed filing. Detailed filing data is available for this year.$1.27$0.09$1.18$0.47$0.60$0.13
2015Detailed filing. Detailed filing data is available for this year.$1.30$0.09$1.21$0.58$0.62$0.04
2014XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.38$0.08$1.30$0.56$0.59$0.03
2013Detailed filing. Detailed filing data is available for this year.$1.33$0.07$1.26$0.55$0.53$0.03
2012Facts available. Structured filing facts are available, but richer extracted sections are limited.$1.16$0.07$1.09$0.53
2011Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.96$0.06$0.90$0.50
2010Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.86$0.05$0.82$0.41
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Nov 6, 2025
Return Version
2024v5.2
Gross Receipts
$1,770,789
Mission and Program Overview

Mission

System dynamics society, inc. Is devoted to encouraging the development and use of system dynamics and systems thinking around the world. System dynamics is a computer-aided approach to policy analysis and design.

SEE SCHEDULE O

Balance Sheet Detail
LineBeginningEndChange
Assets
Investments in Publicly Traded Securities$1,116,824$1,297,101▲ $180,277
Savings and Temporary Cash Investments$14,030$292,172▲ $278,142
Cash and Non-Interest-Bearing Accounts$209,822$88,018▼ $121,804
Accounts Receivable$78,550$62,384▼ $16,166
Prepaid Expenses and Deferred Charges$80,059$34,757▼ $45,302
Inventories for Sale or Use$13,799$8,847▼ $4,952
Total Assets$1,513,084$1,783,279▲ $270,195
Liabilities
Deferred Revenue$40,079$54,832▲ $14,753
Accounts Payable and Accrued Expenses$45,074$36,467▼ $8,607
Escrow Account Liability$2,125$1,960▼ $165
Total Liabilities$87,278$93,259▲ $5,981
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$1,080,926$1,263,496▲ $182,570
Net Assets With Donor Restrictions$344,880$426,524▲ $81,644
Total Net Assets Fund Balance$1,425,806$1,690,020▲ $264,214
Total Liabilities and Net Assets / Fund Balance$1,513,084$1,783,279▲ $270,195
Compensation and Service Providers
Top Officer PayScore unavailable

Employees

NameTitleFull / Part TimeBaseOtherTotal
Rebecca NilesExecutive DirectorFT$111,138$8,046$119,184

Board Members and Trustees

NameTitle
J Bradley MorrisonPast President
Allyson Beall KingPresident
Asmeret Bier NauglePresident-elect
Camilo OlayaMember
Coty GonzalezMember
Hazhir RahmandadMember
Hyunjung KimMember
Jenson GohMember
Jeroen StrubenMember
Juan Pablo TorresMember
Kawika PiersonMember
Martin KuncMember
Raafat ZainiMember
Timothy ClancyMember
Willem AupingMember
Lees StuntzSecretary
Peter HovmandVP Chapters & Sigs
Eliot RichVP Finance
Thomas WittigVP Marketing
John Pastor AnsahVP Meetings
Inge BleijenberghVP Membership
Diana FisherVP Pre-college Education
Saras ChungVP Professional Practice
Robert EberleinVP Publications
Revenue and Support

Revenue Composition

Contributions and Grants
$138,080
Program Service Revenue
$548,285
Investment Income
$25,508
Other Revenue
$20,690
All Other Contributions
$138,080
Change in Net Assets
$101,254

Audited Revenue Reconciliation

Revenue per Audited Statements
$729,986
Revenue Not Reported on Financial Statements
$2,577
Revenue Not Reported on Form 990
$162,960
Total Revenue per Audited Statements
$892,946
Total Revenue per Form 990
$732,563
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$479,186
Salaries, Compensation, and Employee Benefits$143,123
Total Fundraising Expense$23,061
Grants and Similar Amounts Paid$9,000
Professional Fundraising Fees$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Fees for Services Other$95,117$76,903$11,435$183,455
Conferences and Meetings$179,921-$224$180,145
Current Officers, Directors, Trustees, and Key Employees$102,546$10,750$5,888$119,184
Office Expenses$34,879$5,835$2,534$43,248
Advertising-$12,166-$12,166
Other Salaries and Wages$9,660$1,013$555$11,228
Payroll Taxes$8,490$890$487$9,867
Grants to Domestic Individuals$7,500--$7,500
Other Employee Benefits$2,447$256$141$2,844
Fees for Service Investment Mgmnt Fees-$2,577-$2,577
Other Expenses$2,107$408$1,797$2,515
Insurance-$1,612-$1,612
Foreign Grants$1,500--$1,500
Total Functional Expenses$495,835$112,413$23,061$631,309

Audited Expense Reconciliation

Line ItemAmount
Total Expenses per Form 990$631,309
Expenses per Audited Statements$628,732
Total Expenses per Audited Statements$628,732
Expenses Not Reported on Financial Statements$2,577
Expenses Not Reported on Form 990$0
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
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Annual disclosure for covered persons
Yes
Audit committee
Yes
Backup withholding compliance
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
Yes
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 B, Line 11B

“As part of the annual review, our independent certified public accounting firm prepares a draft of form 990 and related supporting schedules from our internal records. We designate an individual or individuals with suitable skill, knowledge or experience to oversee these services and we make all management decisions and perform all management functions. The executive level of management has reviewed, approved, and accepted responsibilitiy for form 990 and the related schedules and believe they are adequately supported by the books and records of system dynamics society, inc. Form 990 and the related schedules are distributed to all members of the finance committee and executive committee prior to filing.”

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

“Sds has "conflict of interest" guidelines which requires an annual signed statement from the executive director and the policy council affirming no conflicts, potential conflicts, or actual conflicts of interest. Disclosed conflicts of interest are reviewed and discussed. Results are documented and noted in the policy council minutes.”

Form 990, Part VI, Section B, Line 15

“Executive director compensation - based on contract. The policy council uses a performance evaluation document and benchmarking information to decide the compensation for the executive director. No member of the policy council receives compensation for serving as a policy council member. There are no "key employees".”

Form 990, Part VI, Section C, Line 19

“UPON REQUEST.”

Filing and Contact Details

Filer

Filer Name
System Dynamics Society Inc
EIN
22-2738769
Phone
9785400411
Address
PO BOX 12747, SAN DIEGO, CA 92112

Signing Officer

Name
Rebecca D Niles
Title
Executive Director
Phone
9785400411
Signed
2025-11-06
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Rebecca D Niles
Formed
1985
Legal Domicile
Ma
Voting Board Members
24
Independent Board Members
24
Employees
2
Volunteers
625

Preparer

Firm
Mengel Metzger Barr & Co Llp
Address
11 BRITISH AMERICAN BLVD, LATHAM, NY 12110
Preparer
Andrew a Matthews CPA
Phone
5187850134
Supplemental Narrative

Additional Explanations

Mission Statement

“System dynamics society, inc. Is devoted to encouraging the development and use of system dynamics and systems thinking around the world.”

Form 990, Part IX, Line 11G

“Professional fees and consultants: program service expenses 95,117. Management and general expenses 76,903. Fundraising expenses 11,435. Total expenses 183,455.”

Financial Statement Notes

PART IV, LINE 2B:

“Custodial account liability”

PART X, LINE 2:

“System dynamics society, inc. (sds) is exempt from income taxes under section 501(c)(3) of the internal revenue code and comparable state law, is classified as an organization that is not a private foundation and qualifies for the charitable contribution deduction for individual donors. Management believes there are no sources of unrelated business taxable income and no uncertain tax positions, and no provision for income taxes has been made in the accompanying financial statements. Sds is required to file federal form 990 "return of organization exempt from income tax" with the internal revenue service, and similar information returns with certain states.”

Raw XML AppendixShowing 400 of 616 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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