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US nonprofit · EIN 270184641 · Sonoma, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 270184641) - 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 30 June 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 2008.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Sweetwater Spectrum Inc

Donations deductible
Revenue
$1.4m
year to 30 June 2025
Expenses
$1.5m
year to 30 June 2025
Total assets
$10m
$58k liabilities
Net assets
$9.9m
assets less liabilities
Directors and trustees
7
3.6y av
Staff
5
15 volunteers
Left since last filing
0
no seats appear to have opened
Officers and senior staff
2
named in Part VII
How am I connected?

Sweetwater Spectrum Inc's network

7 people6 organisationsi7 people and 6 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. The organisation reported 7 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Chris McAllisterTreasurer2020
6 yrs
David SchoenbachDirector2021
5 yrs
Larry GrotteDirector2025
1 yr
Mark JacksonDirector2025
1 yr
Mortimer HartwellCompany secretary2023
3 yrs
Paul ClevelandPresident2021
5 yrs
Robert LernerDirector2025
1 yr
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
Kory StradingerFormer Executive Directorsince 2018
Olivia VainExecutive Directorsince 2022

Pay and hours

year to 30 June 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
Olivia VainExecutive Director40$127k$5k
Paul ClevelandPresident6$0
Mortimer HartwellSecretary0.5$0
Chris McAllisterTreasurer0.5$0
David SchoenbachDirector0.5$0
Larry GrotteDirector0.5$0
Mark JacksonDirector0.5$0
Robert LernerDirector0.5$0

About

Legal name
Sweetwater Spectrum Inc
EIN
270184641
Address
369 5th St W Ste A, Sonoma, CA, 95476-5671
State
California
Mission
To provide adults with autism, or similar intellectual / developmental disabilities, innovative, community-based, long-term housing that offers individuals choice and challenges each resident to reach their highest potential. (as filed on the Form 990)
Activity (NTEE)
P75 Human services
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Human Services
Size band
7 (IRS master file code)
Formed
2009
Principal officer
Olivia Vain (as named on the Form 990)
IRS ruling date
1 September 2009
Status
Code 01 (unconditional exemption)
Form 990 filings on record
8, latest 2025
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥6years on the filingsChris McAllister
≥5years on the filingsDavid Schoenbach
≥5years on the filingsPaul Cleveland
≥3years on the filingsMortimer Hartwell

Latest return

year to 30 June 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 30 June 2025. US dollars, as filed.
Total assets
$10m
Total liabilities
$58k
Net assets or fund balances
$9.9m
Contributions and grants received
$528k
Program service revenue
$855k
Employees
5
Volunteers
15

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2023$1.2m$1.4mDeficit $181k

As filed on the IRS Form 990. US dollars.