HERITAGE MUSEUM FOUNDATION AT GRISSOM AIR RESERVE BASE

The organization over time

Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 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.

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.

Government-grant reliance: 2017 41% · 2018 38% · 2019 21% · 2020 45% · 2021 32% · 2022 32% · 2023 27% · 2024 24%. Grants only. Government contracts and fees sit inside program revenue.

Surplus & reserves

Operating surplus or deficit each year, and months of liquidity in hand. 0 of the last 8 reported years ran a deficit.

Who funds it, year by year

2019 → 2023: the base held at 2 funders, grant income fell $50k → $714.

2 of 3 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 97% 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 HERITAGE MUSEUM FOUNDATION AT GRISSOM AIR RESERVE BASE’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

HERITAGE MUSEUM FOUNDATION AT GRISSOM AIR RESERVE BASE leans on a few funders — its largest provides 97% of grant income and the top three 100%; half comes from just 1 funder.

97% 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 HERITAGE MUSEUM FOUNDATION AT GRISSOM AIR RESERVE BASE.

Largest funder’s share by year: 2019 100% · 2020 98% · 2021 94% · 2022 92% · 2023 92% — 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

97% of HERITAGE MUSEUM FOUNDATION AT GRISSOM AIR RESERVE BASE'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 $4k that is directly attributable, 100% of it comes from funders outside Indiana, across 1 state.

Funder states come from each funder’s own filing. $133k arriving through sponsors registered in 2 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.