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Governance Register
US nonprofit · EIN 821958699 · Tustin, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 821958699) - 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 - 990EZ 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

Integrated Solutions 360's network

3 people1 organisationi3 people and 1 organisation on this map.The large node is the subject of this page. Solid lines are what the register itself records (3). Violet dotted lines (1) 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

3 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.
NameRole as filedSinceOn the board
Elizabeth SittonCompany secretary2023
3 yrs
Guss ToubiaTreasurer2020
6 yrs
Rima NashashibiPresident2020
6 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

3 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Elizabeth SittonCompany secretary2022
Guss ToubiaTreasurer2022
Rima NashashibiPresident2022

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
Guss ToubiaTreasurer10$30k
Rima NashashibiPresident40$22k$5k
Kristin MannaMember0$0
Mellissa WithersMember2$0
Senator Joe DunnMember0.25$0
Tamara FarrarMember2$0
Elizabeth SittonSecretary2$0

About

Legal name
Integrated Solutions 360
EIN
821958699
Address
335 Centennial Way Ste 100, Tustin, CA, 92780-3756
State
California
Activity (NTEE)
P20 Human services
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Human Services
Size band
2 (IRS master file code)
IRS ruling date
1 July 2017
Status
Code 01 (unconditional exemption)
Form 990 filings on record
4, latest 2024
IRS Publication 78
PC (contributions deductible)
Principal officer
Rima Nashashibi (Form 990-N, tax year 2019)

Most connected

Longest observed on the filings

≥6years on the filingsGuss Toubia
≥6years on the filingsRima Nashashibi
≥3years on the filingsElizabeth Sitton

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
$24k
Total liabilities
$77k
Net assets or fund balances
Minus $53k

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$197k$188k$9k

As filed on the IRS Form 990. US dollars.