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US nonprofit · EIN 844690334 · Richmond, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 844690334) - 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.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.Deductibility IRS Publication 78 data (code POF), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Chamberlin Education Foundation

Donations deductible
Total assets
$80.6m
IRS master file
Directors and trustees
7
5.4y av
Chair observed
≥4 yrs
Stephen W Chamberlin
Left since last filing
0
no seats appear to have opened
Officers and senior staff
2
named in Part VII
Activity
T23
Philanthropy, voluntary services and grantmaking
Filings on record
5
latest 2024
Renewal outlook
Low current likelihood
score 8 of 100
How am I connected?

Chamberlin Education Foundation's network

7 people5 organisationsi7 people and 5 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (7). Violet dotted lines (6) 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

7 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.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.
NameRole as filedSinceOn the board
Stephen W Chamberlin ChairChair2020
6 yrs
Anne HoffmanDirector2021
5 yrs
Arun RamanathanDirector2022
4 yrs
Christine CastilloTreasurer and Secretary2020
6 yrs
Dr Stephanie PhillipsPresident2023
3 yrs
Melinda ErkelensDirector2021
5 yrs
Susan C ChamberlinVice Chair2020
6 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

2 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Christine CastilloCOO2022
Stephanie PhillipsCEO2022

About

Legal name
Chamberlin Education Foundation
EIN
844690334
Address
855 Marina Bay Pkwy Ste 100, Richmond, CA, 94804-6413
State
California
Activity (NTEE)
T23 Philanthropy, voluntary services and grantmaking
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Philanthropy, Voluntarism & Grantmaking Foundations
Size band
9 (IRS master file code)
IRS ruling date
1 August 2020
Status
Code 01 (unconditional exemption)
Form 990 filings on record
5, latest 2024
IRS Publication 78
POF (contributions deductible)

Most connected

Longest observed on the filings

≥6years on the filingsStephen W Chamberlin
≥6years on the filingsChristine Castillo
≥6years on the filingsSusan C Chamberlin
≥5years on the filingsAnne Hoffman

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$0$9.3mDeficit $9.3m

As filed on the IRS Form 990. US dollars.