Is it real?
Yes. Never revoked by the IRS. Latest filing on record: FY2025. IRS ruling in Oct 1969.
IRS Pub. 78 · IRS Auto-Revocation List · IRS Business Master File
Where the money goes
73 cents of each dollar spent went to programs.
Form 990 Part IX, line 25, columns B–D. Every line is in By the numbers.
Something off? Claim to add context
Who runs it and what they're paid
22 people listed on the 990; $541K paid to officers and key staff.
Chris Lane’s $287K as CEO is at the 96th percentile of top reported officer pay among 1851 $1–10M environment nonprofits. Peer set: organizations in the same NTEE major field of work and revenue-size band, compared on each org’s own highest-paid officer/key-employee, from Form 990 Part VII / 990-PF Part VIII. Descriptive placement, not a verdict on whether the pay is appropriate.
Compensation history total reportable pay by year · 3 named individuals · Part VII
| Name | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | FY2020 |
|---|---|---|---|---|---|---|
| Chris Lane | $286,971 | $265,215 | $242,726 | $253,767 | $240,780 | $233,982 |
| Christina Mahon | $128,926 | $115,025 | $107,647 | — | — | — |
| Clayton B Kettelkamp | $125,026 | $110,242 | — | — | — | — |
Total reportable compensation (Form 990 Part VII column D / Schedule J column E) by filing year, matched by name within this organization. The Schedule J base / bonus / deferred breakdown is not parsed into this dataset.
See Aspen Center for Environmental Studies executive salaries →Questions the 990 asks
The form asks each of these directly. These are the filed answers.
- Family or business ties among officersPt VI · Ln 2Yes
- Top official's pay set by an independent reviewPt VI · Ln 15aYes
Programs and updates
Provides environmental science education and promotes ecological literacy through immersive programs and land restoration.
Questions for Aspen Center for Environmental Studies
Your first name shows with your question. Aspen Center for Environmental Studies answers here, for everyone.
Aspen center for environmental studies (aces) is a nonprofit environmental science education ORGANIZATION.ACES inspires a life-long commitment to the earth by providing innovative and immersive educational programming for all ages. We have three locations: hallam lake, rock bottom ranch, and catto center at toklat.
Funders
Who pays for it.
From grant filings on record. Receipts are incomplete: individual donors are never listed.
Grants
By the numbers
The FY2025 990, line by line.
Download 990
| Line | FY25 | FY24 | FY23 | FY22 | FY21 |
|---|---|---|---|---|---|
| End of yearLn 1g | $11.8M | $11.3M | $10.8M | $10.8M | $9.8M |
| Given inLn 1b | $150K | $150K | $150K | $150K | |
| SpentLn 1d–1f | $500K | $547K | $585K | $480K | $480K |
| Line | Start FY25 | End FY25 |
|---|---|---|
| Cash and savingsLn 1–2 | $1.8M | $848K |
| InvestmentsLn 11–13 | $11.4M | $8.8M |
| Land, buildings, equipmentLn 10c | $24.2M | $28.7M |
| Total assetsLn 16 | $38.7M | $39.6M |
| LiabilitiesLn 26 | $1.4M | $790K |
| Net assetsLn 32 | $37.3M | $38.9M |
| Line | Total | Programs | Management | Fundraising |
|---|---|---|---|---|
| Other salaries and wagesLn 7 | $2.4M | $1.8M | $213K | $431K |
| Pension plan contributionsLn 8 | $49K | $28K | $11K | $10K |
| Other employee benefitsLn 9 | $288K | $198K | $43K | $46K |
| Payroll taxesLn 10 | $192K | $125K | $33K | $35K |
| Other fees for servicesLn 11g | $116K | $116K | ||
| Advertising and promotionLn 12 | $86K | $35K | $40K | $10K |
| Office expensesLn 13 | $42K | $29K | $7K | $7K |
| Information technologyLn 14 | $42K | $25K | $7K | $11K |
| OccupancyLn 16 | $476K | $293K | $148K | $35K |
| TravelLn 17 | $22K | $22K | ||
| InterestLn 20 | $5K | $5K | ||
| Depreciation, depletion and amortizationLn 22 | $551K | $501K | $6K | $44K |
| InsuranceLn 23 | $139K | $103K | $18K | $18K |
| Other expenses (24a–d)Ln 24 | $608K | $566K | $2K | $40K |
| Total functional expensesLn 25 | $5.0M | $3.7M | $643K | $688K |
Filing history
| Year | Money in | Money out | In minus out | Net assets | Download |
|---|---|---|---|---|---|
| FY2025 Latest ViewingFiled with the IRS Aug 19, 2026 | $6.3M | $5.0M | $1.2M | $38.9M | 990 PDF |
| FY2024Filed with the IRS Sep 2, 2025 | $5.9M | $4.2M | $1.7M | $37.3M | 990 PDF |
| FY2023Filed with the IRS Sep 16, 2024 | $5.6M | $4.0M | $1.7M | $35.1M | 990 PDF |
| FY2022Filed with the IRS Sep 25, 2023 | $4.5M | $3.2M | $1.3M | $33.0M | 990 PDF |
| FY2021Filed with the IRS Aug 28, 2022 | $6.7M | $2.9M | $3.8M | $31.8M | 990 PDF |
| FY2020Filed with the IRS Aug 30, 2021 | $10.6M | $2.5M | $8.1M | $28.0M | 990 PDF |
Schedules filed Part IV
See the full FY2025 990 (6 parts)
Part I · Summary $6,250,553 revenue, 12 lines filed
Part VI · Governance 19 of 19 board members independent, 1 to look at
Part VIII · Statement of revenue $6,250,553 across 10 lines filed
Part IX · Statement of functional expenses $5,018,774 across 14 lines filed
Part X · Balance sheet $39,643,797 assets, 16 lines filed
Part XI · Reconciliation of net assets $38,854,177 net assets at year end
Form 990 e-file (XML) FY2025 from the IRS · Classification, formation year and address from the IRS Business Master File
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