Skip to content
Governance Register
Sign inFind yourself
Find yourselfSign in
Search How it works For organisations For professionals

Edition

United KingdomIrelandUnited States (current)New ZealandCanadaAustraliaScotlandNorthern Ireland
US nonprofit · EIN 364038337 · Big Rock, ILiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 364038337) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe tenure.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2025: assets, liabilities, staff, website, telephone, pay.Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue (us-approach-v4-clean). Not a statement that the organisation is recruiting.Principal officer IRS Form 990-N (e-Postcard) - principal officer named for tax year 2019.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Big Rock Historical Society

Donations deductible
Revenue
$183k
year to 31 December 2025
Expenses
$267k
year to 31 December 2025
Total assets
$2.3m
$0 liabilities
Net assets
$2.3m
assets less liabilities
Directors and trustees
5
2.4y av
Staff
1
employees, year to 31 December 2025
Left since last filing
0
no seats appear to have opened
Officers and senior staff
4
named in Part VII
How am I connected?

Big Rock Historical Society's network

5 peoplei5 people on this map.The large node is the subject of this page. Solid lines are what the register itself records (5). Form 990 filings give names without a person identifier; SEC insider filings carry a CIK.

The board

5 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 9 voting members of its governing body on its latest Form 990 Part VI; we list 5 in Part VII (Part VII does not always name every voting member).
NameRole as filedSinceOn the board
Janis FinleyDirector2024
2 yrs
Jerry ThompsonDirector2024
2 yrs
John RogersonDirector2024
2 yrs
Joni RoscoeDirector2024
2 yrs
Lindsey ZambranoDirector2024
2 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

4 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Jerry ThomasVice Presidesince 2024
Mary RogersonCompany secretarysince 2024
Stephen MichaelTreasurersince 2020
Sue BeckPresidentsince 2020

Pay and hours

year to 31 December 2025iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Sue BeckPresident$0
Stephen MichaelTreasurer$0
Mary RogersonSecretary$0
Jerry ThomasVice Preside$0
Jerry ThompsonDirector$0
Joni RoscoeDirector$0
John RogersonDirector$0
Janis FinleyDirector$0
Lindsey ZambranoDirector$0

No pay was reported for anyone in Part VII on this return.

About

Legal name
Big Rock Historical Society
EIN
364038337
Address
Po Box 206, Big Rock, IL, 60511-0206
State
Illinois
Mission
To establish, maintain, and operate a museum for the general public, and to collect, research, care for and interpret materials and artifacts of cultural and historical interest to the residents of big rock and vistors to the museum/library. (as filed on the Form 990)
Activity (NTEE)
A80Z Arts, culture and humanities
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Arts, Culture & Humanities
Size band
6 (IRS master file code)
Formed
1998
Principal officer
Sue Beck (as named on the Form 990)
IRS ruling date
1 September 1998
Status
Code 01 (unconditional exemption)
Form 990 filings on record
2, latest 2025
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥2years on the filingsJanis Finley
≥2years on the filingsJerry Thompson
≥2years on the filingsJohn Rogerson
≥2years on the filingsJoni Roscoe

Latest return

year to 31 December 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2025. US dollars, as filed.
Total assets
$2.3m
Total liabilities
$0
Net assets or fund balances
$2.3m
Contributions and grants received
$113k
Program service revenue
$8k
Employees
1

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$125k$89k$36k

As filed on the IRS Form 990. US dollars.