US nonprofit · EIN 942589386 · Port Costa, CAiSource and licenceOrganisation recordIRS Exempt Organizations Business Master File (EIN 942589386) - 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 returnIRS Form 990 series e-file data - 990 for the year to 31 March 2026: assets, liabilities, staff, website, telephone, pay.Finances by yearIRS Form 990 e-file data - total revenue and total expenses by tax year.2026 return IRS e-file (TEOS) 2026 release: 990 for the year to 31 March 2026.DeductibilityIRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data
5 peopleExplore in 3DiThe large node is Port Costa Conservation Society. The map shows the people and organisations in the public record, two steps out at most. Hover a node to focus its connections; click one to open it.
Officers and directors
5 listediThe register holds no board history for this organisation, so this is the roster from its newest return: Form 990 Part VII, year to 31 March 2026 (IRS e-file, 2026 release). Titles are as filed; the IRS publishes no person identifier.
Name
Title as filed
Hours a week
Pay from the organisation
Sheller Clark
Financial Se
Anne Mann
Treasurer
Suzanne Statler
Vice Chairma
Michael Domalgalski
Secretary
Janet Wood
Chairman
Officers and senior leadership
4 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
Name
Title as filed
On the filings
Anne Mann
Treasurer
since 2019
Michael Domalgalski
Company secretary
since 2019
Sheller Clark
Financial Se
2026
Suzanne Statler
Fin Secretary
since 2022
About
Legal name
Port Costa Conservation Society
EIN
942589386
Address
Po Box 36, Port Costa, CA, 94569-0036
State
California
Mission
Preserving for public benefit 83 acres east of port costa as a wildlife preserve and the historic 1911 port costa school building, which is on the national register of historic places, as an historical resource for community, civic & recreational uses. (as filed on the Form 990)
Activity (NTEE)
C340Environment
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Environment
Size band
6 (IRS master file code)
Principal officer
Anne Mann (as named on the Form 990)
IRS ruling date
1 July 1979
Status
Code 01 (unconditional exemption)
IRS Publication 78
PC (contributions deductible)
Latest return
year to 31 March 2026iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 March 2026. US dollars, as filed.
Total assets
$1.7m
Net assets or fund balances
$1.7m
Employees
0
Filed finances
2 yearsiTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.