California · Nonprofit
Chamber Music OC
Chamber Music OC (California) receives grants from 4 organizations whose IRS filings report $58,465 to it, the largest being O L HALSELL FOUNDATION ($27,000). 4 of them have funded it in more than one year, and 54% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $271k
- Funders on record
- 4
- Grants received
- $58k
- Net assets
- $319k
What Chamber Music OC does
Mission
The Performance Division is designed to provide residents of the greater Orange County area with world-class chamber music performances presented by rising stars and established veterans in the classical music world. The Education Division is anchored by the Pre-College Program. The program provides a unique and comprehensive musical education that features chamber music coaching and performance classes, musicianship, composition, ear training, career development and college preparation, participation in distinguished guest artist master classes, community outreach performances, and the Rising Stars Recital Series. Open to both pre-formed ensembles and individual instrumentalists, participants in Chamber Music | OCs Adult Chamber Music Program (ACMP) receive comprehensive guidance from renowned resident faculty members on masterpieces from the chamber music repertoire. The ACMP curriculum includes regular coaching, performance opportunities, educational workshops, access to state-of-th
As stated on its FY2025 Form 990.
Program
Education Division:During the 2025/2026 season, the Chamber Music | OC Pre-College Program held 36 days of classes in the fall trimester, 43 days of classes in the winter trimester and 42 days of classes in the spring trimester. The program had a total of 31 students, and 74% of the participants received scholarships or financial assistance. All the students received weekly, in-person group coaching from resident faculty, participated in weekly group classes, and received one-on-one career guidance. Over the course of the program, students performed for visiting Guest Artists and throughout the OC community for various outreach events and presented a series of final in-person performances at Chamber Music OC facility to mark the end of the season.Performance Division:In 2025, Chamber Music OC presented 5 main-series live concert events, in January, February, April, and November - these included both traditional and non-traditional concert formats. These events ranged from guest artist performances to faculty showcases, to fundraisers, to live interviews. Chamber Music | OC plans for continued growth in its performance output and audience engagement.Community Engagement Division:In…
$181,889 spentof which $2,075 as grants100% of program spending
The program described on its FY2025 Form 990. Program spending in total: $181,889.
The organization over time
Each line starts at 100 in 2019, so what you read is the shape rather than the size: 150 means half as much again as 2019, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2019 to 2020, from $79k to $182k (+129%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
77% of Chamber Music OC’s revenue is contributions — more donation-reliant than the typical peer (64% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 7 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Who funds it, year by year
2020 → 2023: the base broadened from 1 funder to 4 funders, grant income rose $64 → $17k.
3 of 4 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 54% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of Chamber Music OC’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
Chamber Music OC leans on a few funders — its largest provides 46% of grant income and the top three 100%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
54% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund Chamber Music OC.
Largest funder’s share by year: 2020 100% · 2021 100% · 2022 54% · 2023 36% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
54% of Chamber Music OC's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $27k that is directly attributable, 100% of it comes from California funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $31k arriving through sponsors registered in 3 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
Chamber Music OC runs a healthier operating margin than half of the 11,634 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 11,634 arts & culture nonprofits $100k–$1M, FY2025
Organizations like Chamber Music OC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
73% of spending goes to programs.
Governance
Public support
99%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for Chamber Music OC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds Chamber Music OC?
- Chamber Music OC (California) receives grants from 4 organizations whose IRS filings report $58,465 to it, the largest being O L HALSELL FOUNDATION ($27,000). 4 of them have funded it in more than one year, and 54% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does Chamber Music OC have?
- IRS filings report 4 organizations giving $58,465 in grants to Chamber Music OC, 4 of which have funded it in more than one year.
- Who is the largest funder of Chamber Music OC?
- O L HALSELL FOUNDATION is the largest funder on record, with $27,000 in grants. The full list of funders is on this page.
- How can an organization like Chamber Music OC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Chamber Music OC →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2019–2025), and the filings of 4 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing