Sealed proof · filed Form 990-PF
MATHILE FAMILY FOUNDATION
EIN 31-1257219, tax year December 1, 2023 to November 30, 2024. The return the foundation filed, as the IRS published it, with its arithmetic re-done exactly and sealed September 28, 2026.
This is the latest return the IRS has published for this foundation. Its tax year ended 22 months ago, so a later one may have been filed since and not yet appear in the public file. The IRS received it on October 14, 2025.
The answer
Nothing carried into the next year: the return shows the year’s amount paid within the year.
Every line we re-do agrees with the return as filed.
Keep this record for the foundation, year on year: the Filing Record, the foundation’s own order, cancellable in writing for a full refund until thirty days after the filing deadline.
Qualifying distributions1.38×
the distributable amount (Part XI ÷ Part X)
Carried to next year$0
undistributed income, Part XII: nothing carried into the next year
Distributions as a rate6.8%
of net noncharitable-use assets; the legal test is the distributable amount, not this rate
Assets at fair market value$291.9M
end of the tax year, Part II
Largest listed stock7.7%
SPDR PORTFOLIO SP 500 GROWTH ETF
If that stock halved−3.9%
of total assets, from that one name
Filing Record: $2,600 a year, direct or at cost through the firm that prepares the return. This page stays whether or not the foundation buys anything. Cancel in writing for any reason, any time up to 30 days after your statutory 990-PF filing deadline (or 12 months from invoice, whichever is earlier): the year is refunded in full to the payer, and seals already generated remain checkable. Or write to a person →
Nothing here can be changed quietly. Try it
MATHILE FAMILY FOUNDATION · Form 990-PF, year ended November 30, 2024checking
Recomputing the seal in your browser…
The foundation’s own public return, sealed through the same free action as yours. Your edits stay in this page: nothing is sent and nothing is saved. A sealed copy shows nothing changed; it does not show the original was correct.
This page’s own short link: paretoalphasystems.com/p/9a04e63da9d5 — it fits on a printed page, and whoever opens it can run the same check.
The return’s own arithmetic, re-done
| Line | As filed | Recomputed | Result |
|---|---|---|---|
| Minimum investment return: 5% of net noncharitable-use assets (Part IX line 6) | $13,535,628 | $13,535,627.5 | recomputes, within the form's whole-dollar rounding (difference $0.5) |
| Excise tax: 1.39% of net investment income (Part V line 1) | $160,616 | $160,616.3348 | recomputes, within the form's whole-dollar rounding (difference −$0.3348) |
| Distributable amount: minimum investment return − taxes + recoveries − deduction (Part X line 7) | $13,360,221 | $13,360,221 | recomputes exactly |
Where the assets sit, at fair market value
| Part II line | Fair market value | Share of assets |
|---|---|---|
| Savings and temporary cash investments (line 2) | $3.7M | 1.3% |
| Corporate stock (line 10b) | $96.9M | 33.2% |
| Corporate bonds (line 10c) | $17.9M | 6.1% |
| Other investments (line 13) | $173.3M | 59.4% |
The ten largest listed stocks, of 44 on the schedule
The schedule ties to Part II line 10b exactly. It behaves like 6.6 equal holdings; the ten largest are 93.4% of the listed stock.
| Stock, as listed | Fair market value | Share of assets |
|---|---|---|
| SPDR PORTFOLIO SP 500 GROWTH ETF | $22.6M | 7.7% |
| ISHARES RUSSELL 1000 VALUE ETF | $17.4M | 6.0% |
| ISHARES INC CORE MSCI EMERGING MKTS ETF | $15.4M | 5.3% |
| ISHARES RUSSELL 2000 ETF | $14.7M | 5.0% |
| SPDR S&P 500 ETF TRUST UNITS SER 1 S&P | $12.3M | 4.2% |
| INVESCO LTD | $2.6M | 0.9% |
| SPDR SERIES TRUST S&P 500 GROWTH ETF | $2.6M | 0.9% |
| ISHARES TR EAFE GRWTH ETF | $1.6M | 0.6% |
| ISHARES CORE S&P US VALUE ETF | $936,584 | 0.3% |
| BILL COM HLDGS INC COM | $443,702 | 0.2% |
Largest other investments (line 13), as listed
| MFO GMO QUAL FD III | $23M | 7.9% |
| MFO ARTISAN FDS INC INTL VALUE FD INSTL SHS | $15M | 5.1% |
| 57 STARS GLOBAL | $7.1M | 2.4% |
| 1607 CAPITAL INTERNATIONAL EQUITY FUND | $6.9M | 2.3% |
| CAPULA | $6.5M | 2.2% |
What the foundation answered on the form
- Part VI-B 4a: did the foundation invest during the year in a manner that would jeopardize its charitable purposes? No
- Part VI-B 4b: did it make any investment in a prior year that could jeopardize its charitable purpose and that had not been removed from jeopardy? No
- Part VI-B 3a: did it hold more than a 2% direct or indirect interest in any business enterprise? Yes
- Part VI-B 3b: did it have excess business holdings? No
- Part VI-B 2a: did it have undistributed income for prior years? No
Quoted as filed. These are the foundation’s own answers; this page does not test them.
Control statement · nine controls
Nine controls, read from the return.
Each control reads one part of the filed return and states a fact in a fixed vocabulary: agrees, differs, reported, not reported, not applicable, not checked. Whether any of it met a requirement is counsel’s question, not this page’s.
Recomputed each time the page is read; not part of the seal. The seal covers the body above (controls v2, kernel@2026-09-15.1).
This return: 4 agree, 4 reported, 1 not checked.
| Control | Reads | Result | Detail |
|---|---|---|---|
| Minimum investment return | Part IX line 6 against 5% of line 5, prorated for a short year | agrees | Filed $13,535,628; recomputed $13,535,627.5; agrees within the form's whole-dollar rounding. |
| Excise tax | Part V line 1 against 1.39% of net investment income | agrees | Filed $160,616; recomputed $160,616.33; agrees within the form's whole-dollar rounding. |
| Distributable amount | Part X line 7 against the form's own chain from line 1 | agrees | Filed $13,360,221; recomputed $13,360,221; agrees to the dollar. |
| Payout coverage | Part XI total against Part X line 7 | reported | Qualifying distributions $18,413,401 against a distributable amount of $13,360,221 (1.38×). |
| Payout deadline | Part XII undistributed income and the date it falls due | reported | Part XII reports $0 undistributed income for the year ended 30 November 2024: nothing carried into the next year, so nothing from this year falls due by 30 November 2025. |
| Holdings tie-out | The corporate-stock schedule against Part II line 10b | agrees | 44 listed holdings sum to Part II line 10b exactly; the largest is 7.7% of total assets. |
| The foundation's own answers | Part VI-B 2a, 3a, 3b, 4a and 4b, each answered | reported | All 5 answered; Yes to Part VI-B 3a. |
| Filing timeliness | The e-file timestamp beside the original due date and the extension window, each with its IRC §7503 roll to the next business day | reported | Return timestamped 14 October 2025; the original due date was 15 April 2025; the six-month extension window ended 15 October 2025. Whether an extension was granted is not visible in the e-file; the timestamp is the preparer software's, not the IRS receipt. |
| Year-to-year continuity | This year's opening balances against last year's closing | not checked | Needs the prior year's return; one sealed year cannot check itself. |
A line that differs is the return’s figure beside the recomputed one, as filed and as recomputed. The return may carry a reason this page cannot read: a schedule filed on paper, an election, a later amendment. It is not a finding. The page is not indexed. It is read by whoever holds the link: the person who asked for it, and anyone the foundation sends it to, its preparer first.
Year-to-year continuity needs two filed years on record. The years, below, reads this foundation’s filed returns in order and holds each against the one before.
The calendar ahead
A payout is owed on last year’s assets, whatever this year’s market does.
Recomputed each time the page is read; not part of the seal. The seal covers the body above (forward v2, kernel@2026-09-15.1). Read against October 8, 2026.
| By | What | Amount | Basis |
|---|---|---|---|
| April 15, 2026 Passed | Excise tax on the year ending 30 November 2025, due with that return by 15 April 2026. That date has passed; the figure for that year is on its own return, not this one. | $160,616 | Projected under the assumptions below |
| November 30, 2026 | Distributable amount for the year ending 30 November 2025, to be paid out | $13,375,011 | Projected under the assumptions below |
If net noncharitable-use assets fell 20% over the year ending November 30, 2025: what is owed now, nothing from Part XII, is unchanged; the following year’s minimum investment return would be $10,828,502, $2,707,125 less than the projection.
The assumptions, the forward kernel proof, and what was refused
- Net noncharitable-use assets for the year ending 30 November 2025 equal this return's Part IX line 5, $270712550; the thirteen-month average is not observable from a filing.
- Net investment income for that year equals this return's, $11555132.
- No recoveries, income tax or deduction next year; the rates stay 5% and 1.39%; a full tax year.
- The fall shown is 20% of net noncharitable-use assets, applied to next year's average only; what is already owed was computed on this year's average and is unchanged.
- Forward kernel proof (the projection’s own, recomputed, not sealed)
480c6e39d7727f03…· kernel@2026-09-15.1 · forward v2, controls v2
- A projection under the stated assumptions, from the foundation's own filed figures; not a forecast, not advice.
- The foundation's preparer computes the actual amounts from the year's monthly values; this page states what the last return implies if nothing changes.
- What is already owed was computed on last year's average assets and does not change with this year's market.
The years · carryover chain
One return is one year. The payout is kept across six.
What a foundation leaves undistributed is due by the end of the next tax year, and what it distributes beyond the year’s amount may be applied in the five years after. So what is owed, and what may be set against it, is only readable across the filed years. The IRS publishes those years; this reads them in order, re-adds each Part XII, and holds each year’s opening lines against the year before’s closing lines.
Sealed under a hash of their own the first time they are opened; not part of the seal above.
Up to six filed returns, read from the IRS and sealed under one hash, at a page of their own. Nothing about you is recorded.
The seal
Recomputed just now: it matches what was sealed on September 28, 2026. Anyone can check it without us.
For your auditor: what this hash is over, and how to check it from the IRS’s own file
proof
9a04e63da9d5a018e1031c5e57b6ae1835200a9343f3c906ad7c21564b4b3c2f · recomputed now, matchesreturn Form 990-PF, IRS object
202532879349100803, schema 2023v6.0 — the file as the IRS published it hashes to d52994eb5a489a45…source file
202532879349100803_public.xml inside 2025_TEOS_XML_11C.zip at irs.gov — not part of the seal; fetch it yourself with verify_proof.py 9a04e63da9d5 --fetcharithmetic
kernel@2026-09-15.1 · kernel proof 6014e5c591e750ef…rules
b839212b6742304a91af2ff9e04e24acdb32ac9fd48760e6b89289b532c4c45b · commit f80886675d1e — the digest of the 990-PF rules this proof was sealed under (body v2); a proof of the same return under later rules names this hash as supersededThis page is not listed on this site and asks search engines not to index it. It is reached by its link, which whoever asked for it holds.
This foundation’s finance lead or counsel: to add a note beside this page, ask for a correction, or keep the record, write to us.
11,842 foundation returns re-done by the same code; in 11,827 every line we recompute agrees. The study.
This page stays whether or not the foundation buys anything.
Filing Record: $2,600 a year, direct or carried at cost by the firm that prepares the return.
The program, and the full body that was hashed
let total_assets_fmv = 291943534 USD let mix_savings = share(3686547 USD, total_assets_fmv) let mix_stock = share(96920118 USD, total_assets_fmv) let mix_bonds = share(17860256 USD, total_assets_fmv) let mix_other = share(173271861 USD, total_assets_fmv) let net_noncharitable_assets = 270712550 USD let mir_filed = 13535628 USD let mir_recomputed = net_noncharitable_assets * 5% let mir_difference = mir_filed - mir_recomputed let net_investment_income = 11555132 USD let excise_filed = 160616 USD let excise_recomputed = net_investment_income * 1.39% let excise_difference = excise_filed - excise_recomputed let distributable_filed = 13360221 USD let distributable_recomputed = 13535628 USD - 175407 USD + 0 USD - 0 USD let distributable_difference = distributable_filed - distributable_recomputed let qualifying_distributions = 18413401 USD let payout_coverage = qualifying_distributions / distributable_filed let payout_rate = share(qualifying_distributions, net_noncharitable_assets) let undistributed_to_next_year = 0 USD let stocks = [22571203 USD, 17405828 USD, 15409309 USD, 14654661 USD, 12261866 USD, 2613870 USD, 2605949 USD, 1616702 USD, 936584 USD, 443702 USD, 369799 USD, 366199 USD, 357550 USD, 350430 USD, 297630 USD, 271938 USD, 267503 USD, 263409 USD, 256443 USD, 245183 USD, 238264 USD, 221107 USD, 216551 USD, 207199 USD, 204825 USD, 203719 USD, 191877 USD, 190242 USD, 186156 USD, 179288 USD, 155456 USD, 155369 USD, 150170 USD, 149375 USD, 138479 USD, 129083 USD, 118003 USD, 85200 USD, 85140 USD, 54301 USD, 44859 USD, 24986 USD, 17841 USD, 6870 USD] let stock_count = count(stocks) let largest_stock = max(stocks) let largest_stock_share_of_assets = share(largest_stock, total_assets_fmv) let top10_share_of_stock = share(sum([22571203 USD, 17405828 USD, 15409309 USD, 14654661 USD, 12261866 USD, 2613870 USD, 2605949 USD, 1616702 USD, 936584 USD, 443702 USD]), sum(stocks)) let stock_concentration = hhi(stocks) let effective_stock_holdings = 1 / stock_concentration let largest_stock_halved_share_of_assets = share(largest_stock * 50%, total_assets_fmv)
{
"mix": [
{
"fmv": "3686547",
"line": "savings",
"label": "Savings and temporary cash investments (line 2)",
"share": "0.0126276028432265261267954644955"
},
{
"fmv": "96920118",
"line": "stock",
"label": "Corporate stock (line 10b)",
"share": "0.33198240999576308478885509415"
},
{
"fmv": "17860256",
"line": "bonds",
"label": "Corporate bonds (line 10c)",
"share": "0.0611770904986030620565139832828"
},
{
"fmv": "173271861",
"line": "other",
"label": "Other investments (line 13)",
"share": "0.593511555559918651940412559368"
}
],
"kind": "public-filing-990pf",
"lens": "AXIOM",
"build": {
"commit": "f80886675d1e9841aaf04d9ad7d91262ed5fee38",
"digest": "b839212b6742304a91af2ff9e04e24acdb32ac9fd48760e6b89289b532c4c45b"
},
"filer": {
"ein": "311257219",
"name": "MATHILE FAMILY FOUNDATION"
},
"scope": [
"Every figure here is the foundation's own filed return or exact arithmetic on it; nothing is estimated.",
"A 990-PF is a year-end snapshot. Prudence is judged at the time of each decision, which a filing cannot show.",
"This page neither establishes nor rules out any tax consequence, and no return is prepared or amended here.",
"A line that differs is the return's figure beside the recomputed one, as filed and as recomputed. The return may carry a reason this page cannot read: a schedule filed on paper, an election, a later amendment. It is not a finding."
],
"checks": [
{
"id": "minimum_investment_return",
"note": null,
"filed": "13535628",
"label": "Minimum investment return: 5% of net noncharitable-use assets (Part IX line 6)",
"verdict": "rounding",
"difference": "0.5",
"recomputed": "13535627.5"
},
{
"id": "excise_tax",
"note": null,
"filed": "160616",
"label": "Excise tax: 1.39% of net investment income (Part V line 1)",
"verdict": "rounding",
"difference": "-0.3348",
"recomputed": "160616.3348"
},
{
"id": "distributable_amount",
"note": null,
"filed": "13360221",
"label": "Distributable amount: minimum investment return − taxes + recoveries − deduction (Part X line 7)",
"verdict": "exact",
"difference": "0",
"recomputed": "13360221"
}
],
"engine": "kernel@2026-09-15.1",
"source": {
"form": "990-PF",
"lines": {
"netInvestmentIncome": "11555132",
"grossInvestmentIncome": "14465753",
"netNoncharitableAssets": "270712550",
"undistributedCurrentYear": "0"
},
"period": {
"end": "2024-11-30",
"days": 366,
"begin": "2023-12-01"
},
"amended": false,
"foreign": {
"organization": false,
"meets85PctTest": false
},
"objectId": "202532879349100803",
"returnTs": "2025-10-14T09:30:21-05:00",
"operating": false,
"sourceSha256": "d52994eb5a489a45da32fc4e4a01b2ffbd504d955e8cf439617958c91828cddd",
"returnVersion": "2023v6.0",
"partXBoxChecked": false
},
"answers": [
{
"answer": "No",
"question": "Part VI-B 4a: did the foundation invest during the year in a manner that would jeopardize its charitable purposes?"
},
{
"answer": "No",
"question": "Part VI-B 4b: did it make any investment in a prior year that could jeopardize its charitable purpose and that had not been removed from jeopardy?"
},
{
"answer": "Yes",
"question": "Part VI-B 3a: did it hold more than a 2% direct or indirect interest in any business enterprise?"
},
{
"answer": "No",
"question": "Part VI-B 3b: did it have excess business holdings?"
},
{
"answer": "No",
"question": "Part VI-B 2a: did it have undistributed income for prior years?"
}
],
"program": "let total_assets_fmv = 291943534 USD\nlet mix_savings = share(3686547 USD, total_assets_fmv)\nlet mix_stock = share(96920118 USD, total_assets_fmv)\nlet mix_bonds = share(17860256 USD, total_assets_fmv)\nlet mix_other = share(173271861 USD, total_assets_fmv)\nlet net_noncharitable_assets = 270712550 USD\nlet mir_filed = 13535628 USD\nlet mir_recomputed = net_noncharitable_assets * 5%\nlet mir_difference = mir_filed - mir_recomputed\nlet net_investment_income = 11555132 USD\nlet excise_filed = 160616 USD\nlet excise_recomputed = net_investment_income * 1.39%\nlet excise_difference = excise_filed - excise_recomputed\nlet distributable_filed = 13360221 USD\nlet distributable_recomputed = 13535628 USD - 175407 USD + 0 USD - 0 USD\nlet distributable_difference = distributable_filed - distributable_recomputed\nlet qualifying_distributions = 18413401 USD\nlet payout_coverage = qualifying_distributions / distributable_filed\nlet payout_rate = share(qualifying_distributions, net_noncharitable_assets)\nlet undistributed_to_next_year = 0 USD\nlet stocks = [22571203 USD, 17405828 USD, 15409309 USD, 14654661 USD, 12261866 USD, 2613870 USD, 2605949 USD, 1616702 USD, 936584 USD, 443702 USD, 369799 USD, 366199 USD, 357550 USD, 350430 USD, 297630 USD, 271938 USD, 267503 USD, 263409 USD, 256443 USD, 245183 USD, 238264 USD, 221107 USD, 216551 USD, 207199 USD, 204825 USD, 203719 USD, 191877 USD, 190242 USD, 186156 USD, 179288 USD, 155456 USD, 155369 USD, 150170 USD, 149375 USD, 138479 USD, 129083 USD, 118003 USD, 85200 USD, 85140 USD, 54301 USD, 44859 USD, 24986 USD, 17841 USD, 6870 USD]\nlet stock_count = count(stocks)\nlet largest_stock = max(stocks)\nlet largest_stock_share_of_assets = share(largest_stock, total_assets_fmv)\nlet top10_share_of_stock = share(sum([22571203 USD, 17405828 USD, 15409309 USD, 14654661 USD, 12261866 USD, 2613870 USD, 2605949 USD, 1616702 USD, 936584 USD, 443702 USD]), sum(stocks))\nlet stock_concentration = hhi(stocks)\nlet effective_stock_holdings = 1 / stock_concentration\nlet largest_stock_halved_share_of_assets = share(largest_stock * 50%, total_assets_fmv)",
"results": {
"mir_filed": "13535628 USD",
"mix_bonds": "0.0611770904986030620565139832828",
"mix_other": "0.593511555559918651940412559368",
"mix_stock": "0.33198240999576308478885509415",
"mix_savings": "0.0126276028432265261267954644955",
"payout_rate": "0.0680182762121667429160561636319",
"stock_count": "44",
"excise_filed": "160616 USD",
"largest_stock": "22571203 USD",
"mir_difference": "0.5 USD",
"mir_recomputed": "13535627.5 USD",
"payout_coverage": "1.37822577934900927162806663153",
"total_assets_fmv": "291943534 USD",
"excise_difference": "-0.3348 USD",
"excise_recomputed": "160616.3348 USD",
"distributable_filed": "13360221 USD",
"stock_concentration": "0.152640011616920861806255811049",
"top10_share_of_stock": "0.933961656959600482533461215968",
"net_investment_income": "11555132 USD",
"distributable_difference": "0 USD",
"distributable_recomputed": "13360221 USD",
"effective_stock_holdings": "6.55136218483584880589502302375",
"net_noncharitable_assets": "270712550 USD",
"qualifying_distributions": "18413401 USD",
"undistributed_to_next_year": "0 USD",
"largest_stock_share_of_assets": "0.077313591059016227432528099766",
"largest_stock_halved_share_of_assets": "0.038656795529508113716264049883"
},
"version": 2,
"holdings": {
"tie": "exact",
"top": [
{
"fmv": "22571203",
"name": "SPDR PORTFOLIO SP 500 GROWTH ETF",
"shareOfAssets": "0.077313591059016227432528099766"
},
{
"fmv": "17405828",
"name": "ISHARES RUSSELL 1000 VALUE ETF",
"shareOfAssets": "0.059620529221928237670781912231"
},
{
"fmv": "15409309",
"name": "ISHARES INC CORE MSCI EMERGING MKTS ETF",
"shareOfAssets": "0.0527818129378402331733094660696"
},
{
"fmv": "14654661",
"name": "ISHARES RUSSELL 2000 ETF",
"shareOfAssets": "0.0501969021173799999283423074546"
},
{
"fmv": "12261866",
"name": "SPDR S&P 500 ETF TRUST UNITS SER 1 S&P",
"shareOfAssets": "0.0420008137601019791724518892753"
},
{
"fmv": "2613870",
"name": "INVESCO LTD",
"shareOfAssets": "0.00895334095667965710108859612558"
},
{
"fmv": "2605949",
"name": "SPDR SERIES TRUST S&P 500 GROWTH ETF",
"shareOfAssets": "0.00892620899766185607659322230442"
},
{
"fmv": "1616702",
"name": "ISHARES TR EAFE GRWTH ETF",
"shareOfAssets": "0.00553772155131889305690188706149"
},
{
"fmv": "936584",
"name": "ISHARES CORE S&P US VALUE ETF",
"shareOfAssets": "0.00320809982385155343087680784189"
},
{
"fmv": "443702",
"name": "BILL COM HLDGS INC COM",
"shareOfAssets": "0.00151982129530568743474894018375"
}
],
"count": 44,
"schedule": "Corporate stock (line 10b)"
},
"refusals": [],
"blankLines": [],
"kernelProof": "6014e5c591e750efae4125ef06c585a40c5483bfa6ce2946f0da080bfad2698f",
"otherInvestments": [
{
"fmv": "22962034",
"name": "MFO GMO QUAL FD III",
"shareOfAssets": "0.0786523122652889445395286610458"
},
{
"fmv": "15004660",
"name": "MFO ARTISAN FDS INC INTL VALUE FD INSTL SHS",
"shareOfAssets": "0.0513957606610324858230975583107"
},
{
"fmv": "7116372",
"name": "57 STARS GLOBAL",
"shareOfAssets": "0.0243758507081715329238975369806"
},
{
"fmv": "6853697",
"name": "1607 CAPITAL INTERNATIONAL EQUITY FUND",
"shareOfAssets": "0.0234761048004577487919290584459"
},
{
"fmv": "6453000",
"name": "CAPULA",
"shareOfAssets": "0.022103589387939655481460329243"
}
]
}The seal’s own scope:
- Every figure here is the foundation's own filed return or exact arithmetic on it; nothing is estimated.
- A 990-PF is a year-end snapshot. Prudence is judged at the time of each decision, which a filing cannot show.
- This page neither establishes nor rules out any tax consequence, and no return is prepared or amended here.
- A line that differs is the return's figure beside the recomputed one, as filed and as recomputed. The return may carry a reason this page cannot read: a schedule filed on paper, an election, a later amendment. It is not a finding.
We don’t prepare or file a 990-PF. We read the one the foundation filed, re-do its arithmetic exactly, and seal what it says.