· Public charity
Heat and Frost Insulators and Allied Workers Local Union No 16
To promote the welfare, working conditions, and quality of members in the jurisdictional area of local 16.
What you funded, over time
By grantee IRS cause code (NTEE).
A cause breakdown isn’t shown here: 63% of HEAT AND FROST INSULATORS AND ALLIED WORKERS LOCAL UNION NO 16’s grantee dollars fall outside its nine largest cause areas, whether because the recipient carries no IRS cause code or because its cause sits in the long tail. A chart would be mostly one residual band and misrepresent the portfolio.
Where the money goes
Your grants by size, and where they go.
The 6 grants below total $51,500 — the rows itemised in this filing. The $208,228 headline is the total grant expense reported on the return, so the remaining $156,728 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.
By grant size · FY2025
- Under $10k4 grants · $31k
- $10k–50k2 grants · $21k
| Recipient | Amount |
|---|---|
| CCBCTC | $11,000 |
| ACIS | $10,000 |
| MESOTHELIOMA RESEARCH FOUNDATION | $8,500 |
| CONTRA COSTA LABOR-TO-LABOR | $7,500 |
| NAPA-SOLANO BLDG TRADES COUNCIL | $7,500 |
| SACRAMENTO-SIERRA BLDG TRADES | $7,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Dollar for dollar, your grants (FY18–25) land where the poverty rate runs at 10%, against an area that typically sits at 8%. 90% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +2% since the first grant, against 0% for the ones you funded once.
4 repeat relationships — 3 still active in FY2025, 1 since wound down; 3 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 52% of grant dollars renewed an existing relationship; $25k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- MRMESOTHELIOMA RESEARCH FOUNDATION OF AMERICA6× · 2019–2025 · $49k · revenue -6%
- CCCONTRA COSTA LABOR COUNCIL AFL-CIO3× · 2023–2025 · $22k · revenue +70%
- IAINT'L ASSOC OF HEAT AND FROST INSULATORS PAC FUND3× · 2019–2021 · $20k
Funded once
- CTCOMMITTEE TO ELECT STEVE SISOLAKone grant, 2022 · $10k
- HAHEAT AND FROST INSULATORS AND ALLIED WORKERS LOCALone grant, 2022 · $8k
- SISBCTC ISSUES ACCOUNTone grant, 2018 · $8k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
To organize all branches of labor in order that each may cooperate with all others in establishing and maintaining, in the various crafts and callings, the highest possible standard of living for their members.
The primary purposes of the organization are the study of economic and social conditions; the pursuit of policies aimed at effecting a more equal distribution of wealth; and the promotion of full employment.
To benefit local trade unions and their members through education and promotion of union labor to the public.
To organize all workers for the economic, moral and social advancement of their condition and status.
Labor organization
Collective Bargaining Representation
Member, affiliate, and community education for worker's issues - union and non-union
The council coordinated the efforts of affiliated local unions and assisted their organizations work, bettering the working conditions of their members.
The Labor Council offers an avenue for local unions to come together as one group.
to organize workers in the laborers international union of north America, afl-cio pacific southwest region through a coordinated program to maintain and improve employment opportunities for affiliated local union members and to recruit new…
To create a better working environment for the construction industry and its members.
Represent members and cal employers to members of cal legislature and other agencies of state government through in-house legislative analysts, lobbying staff, and contract lobbyists. cal chamber publishes books and software related to…
For reference, the grantee most central to the portfolio’s shape is Contra Costa Building and Construction Trades Council and the most unlike its peers is Mesothelioma Research Foundation of America. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
9 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 9 of the 15 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds MESOTHELIOMA RESEARCH FOUNDATION OF AMERICA ↗
- Who funds CONTRA COSTA LABOR COUNCIL AFL-CIO ↗
- Who funds CONTRA COSTA BUILDING AND CONSTRUCTION TRADES COUNCIL ↗
- Who funds A Cure in Sight ↗
- Who funds American Federation of Labor ↗
- Who funds Coalition to Protect Riders and Drivers sponsored by the CA Labor Federation AFL-CIO ↗
- Who funds BUILDING AND CONSTRUCTION TRADES COUNCIL OF ALAMEDA COUNTY ↗
- Who funds SHOOT FOR A CURE ↗
- Who funds SFR COMMUNITY FUND INC ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a set of overlaps that mostly run through you, not between each other.
Open a dossier: United Assoc of Journeymen & PPF 342
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Heat and Frost Insulators and Allied Workers Local Union No 16 funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.
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How do I get to Heat and Frost Insulators and Allied Workers Local Union No 16?
Find your warmest path to Heat and Frost Insulators and Allied Workers Local Union No 16 through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.