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US nonprofit · EIN 237358957 · Sonoma, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 237358957) - 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 time served.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2024: 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. 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

Sonoma League for Historic Preservation

Donations deductible
Revenue
$39k
year to 31 December 2024
Expenses
$42k
year to 31 December 2024
Total assets
$738k
$0 liabilities
Net assets
$738k
assets less liabilities
Directors and trustees
5
4.2 years on average
Staff
0
employees, year to 31 December 2024
Left since last filing
0
no seats appear to have opened
Officers and senior staff
7
named in Part VII
How am I connected?

Sonoma League for Historic Preservation's network

5 people4 organisationsi5 people and 4 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (5). Violet dotted lines (4) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

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 in the tables. The network map shows same-name matches as likely links only, never as confirmed.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record. The organisation reported 5 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Bill WisialowskiDirector2022
4 yrs
Chip AllenPresident2022
4 yrs
Linda JacksonCompany secretary2022
4 yrs
Mary SzykownyTreasurer2022
4 yrs
Sharel McVeyDirector2023
3 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

7 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Alice DuffeePresidentsince 2018
Elizabeth SkrondalCompany secretarysince 2020
Gina CuclisVice Presidentsince 2018
James TitusDirector2023
Laura BassettCompany secretary2018
Mary SzykownyTreasurersince 2018
Robert DemlerExecutive Director2022

Pay and hours

year to 31 December 2024iFrom 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
Mary SzykownyTreasurer2$0
Chip AllenPresident2$0
Bill WisialowskiDirector2$0
Sharel McVeyDirector2$0
Linda JacksonSecretary2$0

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

About

Legal name
Sonoma League for Historic Preservation
EIN
237358957
Address
Po Box 766, Sonoma, CA, 95476-0766
State
California
Mission
The mission is to educate, promote interest in, and advocate for the preservation of historic buildings, neighborhoods, and landscapes in the City of Sonoma and Sonoma Valley. (as filed on the Form 990)
Activity (NTEE)
A82Z 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
5 (IRS master file code)
Formed
1972
Principal officer
Mary Szykowny (as named on the Form 990)
IRS ruling date
1 March 1974
Status
Code 01 (unconditional exemption)
Form 990 filings on record
4, latest 2024
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥4years on the filingsBill Wisialowski
≥4years on the filingsChip Allen
≥4years on the filingsLinda Jackson
≥4years on the filingsMary Szykowny

Latest return

year to 31 December 2024iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2024. US dollars, as filed.
Total assets
$738k
Total liabilities
$0
Net assets or fund balances
$738k
Contributions and grants received
$39k
Program service revenue
$10k
Employees
0

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$39k$42kDeficit $3k

As filed on the IRS Form 990. US dollars.