Sonoma Mountain Institute
Organization summary
Type of Nonprofit
Designated as a Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.
Category: Environmental Quality, Protection and Beautification / Land Resources Conservation (NTEE)
Donations to this organization are tax deductible.
Summary charts: organization finances over time
Revenue $2.5M (2024)
Expenses $1.18M (2024)
Total Assets $17.7M (2024)
Total Liabilities $5.47k (2024)
Tax Filings by Year
Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.
Fiscal Year Ending Dec.
2024
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $2,259,618 |
90.2%
|
| Interest Revenue | $8,797 |
0.4%
|
| Dividends | $20,894 |
0.8%
|
| Sales of Assets | $195,599 |
7.8%
|
| Other Income | $18,876 |
0.8%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $1,030,158 |
87.0%
|
| Compensation of Officers* | $210,601 |
17.8%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $17,694,707 | |
| Total Liabilities | $5,473 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Mark Sindt (Treasurer/Ex Di) | $143,079 | $0 |
| Cline B Johnson (Land Projects Mgr) | $91,725 | $0 |
| Willliam Dellinger (Grassland) | $65,000 | $0 |
Document Links
990-PF
Filed on Nov. 11, 2025Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2023
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $1,185,000 |
95.8%
|
| Interest Revenue | $5,597 |
0.5%
|
| Dividends | $24,964 |
2.0%
|
| Sales of Assets | $3,475 |
0.3%
|
| Other Income | $17,456 |
1.4%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $881,250 |
93.1%
|
| Compensation of Officers* | $141,649 |
15.0%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $16,391,802 | |
| Total Liabilities | $21,938 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Mgr) | $91,725 | $0 |
| Mark Sindt (Treasurer/Ex Di) | $74,547 | $0 |
| Willliam Dellinger (Grassland) | $58,461 | $0 |
Document Links
990-PF
Filed on Nov. 5, 2024Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2022
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $949,516 |
93.2%
|
| Interest Revenue | $5,321 |
0.5%
|
| Dividends | $18,953 |
1.9%
|
| Sales of Assets | $8,903 |
0.9%
|
| Other Income | $35,726 |
3.5%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $784,886 |
96.2%
|
| Compensation of Officers* | $129,969 |
15.9%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $16,091,185 | |
| Total Liabilities | $11,211 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Supe) | $91,725 | $0 |
| Mark Sindt (Treasurer/Ex Di) | $68,547 | $0 |
| Ben D'aste Sims (Grasslands Mgr) | $51,000 | $0 |
Document Links
990-PF
Filed on July 7, 2023Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2021
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $850,000 |
90.1%
|
| Interest Revenue | $5,526 |
0.6%
|
| Dividends | $21,505 |
2.3%
|
| Sales of Assets | $36,807 |
3.9%
|
| Other Income | $29,797 |
3.2%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $738,832 |
95.9%
|
| Compensation of Officers* | $131,994 |
17.1%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $15,892,045 | |
| Total Liabilities | $14,814 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Supe) | $95,253 | $0 |
| Mark Sindt (Treasurer/Ex Di) | $71,184 | $0 |
| Ben D'aste Sims (Grasslands Mgr) | $58,644 | $0 |
Document Links
990-PF
Filed on May 30, 2022Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2020
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $702,970 |
86.9%
|
| Interest Revenue | $5,006 |
0.6%
|
| Dividends | $19,673 |
2.4%
|
| Sales of Assets | $62,576 |
7.7%
|
| Other Income | $18,600 |
2.3%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $703,392 |
96.4%
|
| Compensation of Officers* | $77,667 |
10.6%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $15,710,043 | |
| Total Liabilities | $6,024 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Supe) | $91,725 | $0 |
| Mark Sindt (Treasurer/Ex Di) | $68,547 | $0 |
| Byron Palmer (Grass Land Mgr) | $55,187 | $0 |
Document Links
990-PF
Filed on May 14, 2021Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2019
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $755,230 |
90.6%
|
| Interest Revenue | $5,393 |
0.6%
|
| Dividends | $25,058 |
3.0%
|
| Sales of Assets | $43,279 |
5.2%
|
| Other Income | $5,000 |
0.6%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $642,046 |
95.5%
|
| Compensation of Officers* | $68,547 |
10.2%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $15,633,940 | |
| Total Liabilities | $8,859 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Supe) | $91,725 | $0 |
| Mark Sindt (Treasurer/Ex Di) | $68,547 | $0 |
| Byron Palmer (Grass Land Mgr) | $55,187 | $0 |
Document Links
990-PF
Filed on June 24, 2020Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2018
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $616,201 |
87.8%
|
| Interest Revenue | $4,360 |
0.6%
|
| Dividends | $31,614 |
4.5%
|
| Sales of Assets | $49,702 |
7.1%
|
| Other Income | $0 |
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $614,383 |
92.3%
|
| Compensation of Officers* | $68,547 |
10.3%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $15,470,872 | |
| Total Liabilities | $7,740 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Supe) | $91,725 | $0 |
| Mark Sindt (Treasurer/Ex Di) | $68,547 | $0 |
| Byron Palmer (Grass Land Mgr) | $55,187 | $0 |
Document Links
990-PF
Filed on Nov. 8, 2019Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2017
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $712,500 |
82.5%
|
| Interest Revenue | $4,180 |
0.5%
|
| Dividends | $34,594 |
4.0%
|
| Sales of Assets | $111,938 |
13.0%
|
| Other Income | $0 |
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $575,070 |
87.6%
|
| Compensation of Officers* | $68,547 |
10.4%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $15,453,829 | |
| Total Liabilities | $27,255 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Supe) | $91,725 | $0 |
| Mark Sindt (Treasurer/Ex Di) | $68,547 | $0 |
| Byron Palmer (Grass Land Mgr) | $55,187 | $0 |
Document Links
990-PF
Filed on May 17, 2018Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2016
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $600,000 |
94.5%
|
| Interest Revenue | $5,780 |
0.9%
|
| Dividends | $23,894 |
3.8%
|
| Sales of Assets | $477 |
0.1%
|
| Other Income | $5,073 |
0.8%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $550,158 |
85.0%
|
| Compensation of Officers* | $68,547 |
10.6%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $15,266,210 | |
| Total Liabilities | $46,392 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Supe) | $91,725 | $0 |
| Mark Sindt (Treasurer/Ex Di) | $68,547 | $0 |
| Byron Palmer (Grass Land Mgr) | $55,187 | $0 |
Document Links
990-PF
Filed on July 3, 2017Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2015
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $821,500 |
85.0%
|
| Interest Revenue | $0 | |
| Dividends | $38,046 |
3.9%
|
| Sales of Assets | $106,675 |
11.0%
|
| Other Income | $0 |
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $539,698 |
95.6%
|
| Compensation of Officers* | $68,947 |
12.2%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $15,300,672 | |
| Total Liabilities | $69,101 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Sup) | $91,725 | $400 |
| Mark Sindt (Treasurer/Executive Director) | $68,547 | $400 |
| Byron Palmer (Grass Land Manager) | $55,187 | $0 |
Document Links
990-PF
Filed on Oct. 25, 2016Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2014
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $300,300 |
76.7%
|
| Interest Revenue | $7,189 |
1.8%
|
| Dividends | $29,455 |
7.5%
|
| Sales of Assets | $53,960 |
13.8%
|
| Other Income | $760 |
0.2%
|
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $508,602 |
93.2%
|
| Compensation of Officers* | $64,400 |
11.8%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $15,024,504 | |
| Total Liabilities | $92,463 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Sup) | $83,997 | $4,400 |
| Mark Sindt (Treasurer) | $60,000 | $4,400 |
| Broc Dolman (President) | $0 | $0 |
Document Links
990-PF
Filed on July 27, 2015Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2013
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $502,000 |
89.2%
|
| Interest Revenue | $6,557 |
1.2%
|
| Dividends | $27,036 |
4.8%
|
| Sales of Assets | $27,077 |
4.8%
|
| Other Income | $0 |
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $369,930 |
96.5%
|
| Compensation of Officers* | $63,600 |
16.6%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $15,191,678 | |
| Total Liabilities | $105,811 |
Compensation
| Key Employees and Officers | Compensation | Other |
|---|---|---|
| Cline B Johnson (Land Projects Sup) | $84,000 | $0 |
| Mark Sindt (Treasurer) | $60,000 | $3,600 |
| Broc Dolman (President) | $0 | $0 |
Document Links
990-PF
Filed on June 23, 2014Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2012
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $500,000 |
93.0%
|
| Interest Revenue | $6,011 |
1.1%
|
| Dividends | $27,724 |
5.2%
|
| Sales of Assets | $3,734 |
0.7%
|
| Other Income | $0 |
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $315,270 |
94.3%
|
| Compensation of Officers* | $60,000 |
17.9%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $14,915,329 | |
| Total Liabilities | $8,633 |
Document Links
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2011
Extracted Financial Data
Extracted Financial Data from Form 990-PF
| Notable Sources of Revenue | Percent of Total Revenue | |
|---|---|---|
| Contributions Received | $500,000 |
96.0%
|
| Interest Revenue | $0 | |
| Dividends | $25,795 |
5.0%
|
| Sales of Assets | $0 | |
| Other Income | $0 |
| Notable Expenses | Percent of Total Expenses | |
|---|---|---|
| Charitable Disbursements | $318,510 |
96.4%
|
| Compensation of Officers* | $60,000 |
18.2%
|
| * Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%. | ||
| Assets/Debt | ||
|---|---|---|
| Total Assets | $14,706,498 | |
| Total Liabilities | $2,848 |
Document Links
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2010
No Extracted Financial Data
Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.
Document Links
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2009
No Extracted Financial Data
Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.
Document Links
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2008
No Extracted Financial Data
Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.
Document Links
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2007
No Extracted Financial Data
Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.
Document Links
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2006
No Extracted Financial Data
Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2005
No Extracted Financial Data
Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2004
No Extracted Financial Data
Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2003
No Extracted Financial Data
Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
990-PF
Primary tax return for a private foundation's activities, finances, and governance
Fiscal Year Ending Dec.
2002
No Extracted Financial Data
Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.
Document Links
990
Primary tax return for a nonprofit’s activities, finances, and governance
990-PF
Primary tax return for a private foundation's activities, finances, and governance
About This Data
What Is This Data?
Which Organizations Are Here?
Types of Nonprofits
Get the Data
API
See an issue with the data?
Contact Us