- Revenue 2024
- $2,681,033
- Expenses 2024
- $3,460,225
Program services were 74.6% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.
As filed
- Subsection
- 03
- NTEE code
- C60Z
- Classification
- 2800
- Street
- 300 OLD LARAMIE TRL
These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).
Mission and programs · 2024
Mission
THORNE'S MISSION IS TO BUILD EARTH STEWARDSHIP BY CONNECTING YOUTH TO NATURE THROUGH JOYFUL, HANDS-ON, PLACE-BASED ENVIRONMENTAL EDUCATION EXPERIENCES.
-
CORE PROGRAMS: THORNE ACCOMPLISHES ITS MISSION THROUGH NATURE-BASED EDUCATION PROGRAMS THAT PRIMARILY SERVE BOULDER COUNTY YOUTH AND FAMILIES. PROGRAMS ARE DESIGNED TO BUILD EARTH STEWARDSHIP BY CONNECTING CHILDREN AND YOUTH TO NATURE THROUGH JOYFUL, HANDS-ON, PLACE-BASED ENVIRONMENTAL EDUCATION EXPERIENCES. SCHOOL AND COMMUNITY PROGRAMS: THORNE PROVIDES FIELD TRIPS, FIELD DAYS, IN-SCHOOL LESSONS, AND AFTER-SCHOOL PROGRAMS THAT SUPPORT ACADEMIC LEARNING AND BUILD NATURE CONNECTION THROUGH DIRECT EXPERIENCE WITH LOCAL ECOSYSTEMS. FY25 SCFD ATTENDANCE SUPPORT DOCUMENTED QUALIFYING TOUR GROUP/PROGRAM ATTENDANCE FOR FIELD TRIP, FIELD DAY, IN-SCHOOL, AND AFTER- SCHOOL ACTIVITIES. ------ SEE SCHEDULE O FOR MORE DETAILS ------
Expenses $2,580,829 · Grants $149,771 · Revenue $1,377,584
As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.
Officers and directors · 2024
As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.
-
Brian SenseBRIAN SENSE
EXECUTIVE DI
- Total calculated
- $0
- Hours/week
- 40
-
Keith DesrosiersKEITH DESROSIERS
EXECUTIVE DI
- Total calculated
- $193,282
- From this org
- $175,294
- From related orgs
- $0
- Other
- $17,988
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $175,294
- Bonus
- not reported
- Other
- not reported
- Deferred
- $10,061
- Nontaxable benefits
- $7,927
- Filer's total
- $193,282
-
Leann ArendLEANN AREND
DEPUTY DIREC
- Total calculated
- $115,373
- From this org
- $115,373
- From related orgs
- $0
- Other
- $0
- Hours/week
- 40
-
John RicottaJOHN RICOTTA
CHAIR
- Total calculated
- $0
- Hours/week
- 2
-
Sarah HauckSARAH HAUCK
VICE CHAIR
- Total calculated
- $0
- Hours/week
- 2
-
Aidan SmithAIDAN SMITH
SECRETARY
- Total calculated
- $0
- Hours/week
- 2
-
Sarah IrizarrySARAH IRIZARRY
TREASURER
- Total calculated
- $0
- Hours/week
- 2
-
John AhrensJOHN AHRENS
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
Luis AlvarezLUIS ALVAREZ
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
David KirkDAVID KIRK
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
Sari LongSARI LONG
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
Juana MendozaJUANA MENDOZA
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
Annika ParadiseANNIKA PARADISE
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
Leidy Pineda FloresLEIDY PINEDA FLORES
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
Tammy SandovalTAMMY SANDOVAL
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
Jay SchultzJAY SCHULTZ
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
Micah ShagouryMICAH SHAGOURY
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
-
Mary Kathryn WoodMARY KATHRYN WOOD
BOARD MEMBER
- Total calculated
- $0
- Hours/week
- 1
Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.
Filings
-
2024
- Revenue
- $2,681,033
- Expenses
- $3,460,225
- Contributions
- $1,280,142
- Grants paid
- $149,771
-
2023
- Revenue
- $3,270,743
- Expenses
- $3,574,915
- Contributions
- $1,892,066
- Grants paid
- $126,948
-
2022
- Revenue
- $4,946,732
- Expenses
- $2,724,855
- Contributions
- $3,640,155
- Grants paid
- $161,647
The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.
Other returns filed
-
2021 · 990
- Revenue
- $3,202,535
- Expenses
- $2,234,422
- Assets (EOY)
- $4,978,223
-
2020 · 990
- Revenue
- $1,022,609
- Expenses
- $1,032,182
- Assets (EOY)
- $3,207,075
-
2020 · 990
- Revenue
- $2,802,339
- Expenses
- $2,035,638
- Assets (EOY)
- $4,067,500
-
2019 · 990
- Revenue
- $2,394,982
- Expenses
- $1,969,561
- Assets (EOY)
- $2,849,455
-
2018 · 990
- Revenue
- $1,771,675
- Expenses
- $1,650,630
- Assets (EOY)
- $2,258,252
-
2017 · 990
- Revenue
- $1,814,540
- Expenses
- $1,423,688
- Assets (EOY)
- $2,086,400
-
2016 · 990
- Revenue
- $1,638,247
- Expenses
- $1,051,442
- Assets (EOY)
- $1,567,589
-
2015 · 990
- Revenue
- $908,052
- Expenses
- $787,671
- Assets (EOY)
- $980,771
-
2014 · 990
- Revenue
- $956,296
- Expenses
- $708,139
- Assets (EOY)
- $865,738
-
2013 · 990
- Revenue
- $756,703
- Expenses
- $647,006
- Assets (EOY)
- $620,266
Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.
Grants made
-
$57,612
2022 NATURE'S KIDS
-
$56,490
2023 NATURE'S KIDS
-
$43,860
2024 NATURE'S KIDS
-
$37,750
2022 NATURE'S KIDS
-
$32,200
2024 NATURE'S KIDS
-
WILDLANDS RESTORATION VOLUNTEERS
$32,195
2022 NATURE'S KIDS
-
$28,200
2023 NATURE'S KIDS
-
$21,500
2024 NATURE'S KIDS
-
$15,000
2023 NATURE'S KIDS
-
WILDLANDS RESTORATION VOLUNTEERS
$13,125
2024 NATURE'S KIDS
The 10 largest by cash amount. The API serves every itemized grant.
Grants received
-
$296,073
2023 GENERAL SUPPORT
-
$209,740
2024 GENERAL SUPPORT
-
$131,114
2023 YOUTH OUTDOOR PART.
-
$100,000
2022 YOUTH OUTDOOR PART.
-
$100,000
2025
-
$60,210
2023 ENVIRONMENTAL EDUCATION
-
$45,135
2022 GENERAL SUPPORT
-
$45,000
2023 IN FURTHERANCE OF GRANTEE'S TAX-EXEMPT PURPOSE
-
2023 TO BUILD CAPACITY FOR LOCAL STRATEGIES THAT CONNECT CHILDREN TO NATURE MORE EQUITABLY.
-
2023 UNRESTRICTED GENERAL SUPPORT
The 10 largest by cash amount. The API serves every itemized grant.
Other IRS files
Auto-Revocation List
Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.
Publication 78
Listed as of 13 October 2026, under deductibility PC.
These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.
What this page reflects
The registration facts above come from the IRS Business Master File published 13 October 2026 and read 29 October 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.