THE MOUNTAIN BROOK LIBRARY FOUNDATION

What The Mountain Brook Library Foundation does

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.

Balance sheet

Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2023 to 2024, from $7.3M to $9.0M (+24%).

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.

Surplus & reserves

Operating surplus or deficit each year, and months of liquidity in hand. 0 of the last 9 reported years ran a deficit.

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

2017 → 2023: the base narrowed from 6 funders to 5 funders, grant income rose $8k → $10k.

2 of 20 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 14% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.

Left out of every figure on this page: $255k from one payer (the payer shares this organization's board, largest The Community Foundation of Greater Birmingham). These are real filings, and they are not money THE MOUNTAIN BROOK LIBRARY FOUNDATION raised.

From the IRS filings of THE MOUNTAIN BROOK LIBRARY FOUNDATION’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

THE MOUNTAIN BROOK LIBRARY FOUNDATION has a broad base — no single funder exceeds 29% of grant income, and it takes 4 funders to reach half.

Largest funder’s share by year: 2017 62% · 2018 29% · 2019 60% · 2020 77% · 2021 36% · 2022 64% · 2023 63% — broadly stable.

“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.

How long its funders stay

25% of THE MOUNTAIN BROOK LIBRARY FOUNDATION's funders are still giving 3 years after their first grant; 45% give in more than one year at all.

Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.

Where its funders are

97% of THE MOUNTAIN BROOK LIBRARY FOUNDATION's grant income comes from Alabama funders.

Funder states come from each funder’s own filing. $14k 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.