Nonprofit · EIN 47-2128576
TIDELINES INSTITUTE
Tax-exempt · GUSTAVUS, AK 99826
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $966,548 | $827,213 | $139,335 | $3,929,770 | $7,958 | $3,921,812 |
| December 31, 2024 | 990 | $1,243,938 | $761,939 | $481,999 | $3,924,153 | $141,573 | $3,782,580 |
| December 31, 2023 | 990 | $1,021,045 | $594,102 | $426,943 | $3,316,902 | $1,871 | $3,315,031 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $725,113
- Program service revenue
- $234,113
- Investment income
- $7,322
- Net gain from sales of assets
- -$1,663
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Other salaries and wages
- $356,575
- Salaries, compensation and benefits (total)
- $406,895
- Professional fundraising fees
- $0
- Accounting fees
- $22,850
- Occupancy
- $93,731
- Travel
- $85,146
- Depreciation
- $65,246
- Program services (functional)
- $540,784
- Management and general (functional)
- $286,429
Balance sheet and other
- Total assets, start of year
- $3,924,153
- Total assets, end of year
- $3,929,770
- Total liabilities, end of year
- $7,958
- Net assets, end of year
- $3,921,812
- Land, buildings and equipment
- $2,669,855
- Net assets without donor restrictions
- $3,921,812
- Gross receipts
- $968,211
- Employees
- 12
- Year formed
- 2014
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| JESSICA LINDMARK | PRESIDENT Trustee or director, Officer | – | $0 |
| DAVID NEIDORF | VICE PRESIDE Trustee or director, Officer | – | $0 |
| JERRY DZUGAN | TREASURER Trustee or director, Officer | – | $0 |
| SHUBHRA MURARKA | SECRETARY Trustee or director, Officer | – | $0 |
| NORMAN COHEN | DIRECTOR Trustee or director | – | $0 |
| REBEKAH CONTRERAS | DIRECTOR Trustee or director | – | $0 |
| SAGE LOGAN | DIRECTOR Trustee or director | – | $0 |
| UTSA SETH | DIRECTOR Trustee or director | – | $0 |
990 for the year ended December 31, 2024: 9 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| JESSICA LINDMARK | PRESIDENT Trustee or director, Officer | – | $0 |
| DR AMITY WILCZEK | VICE PRESIDE Trustee or director, Officer | – | $0 |
| ELIZABETH HILLSTROM | SECRETARY Trustee or director, Officer | – | $0 |
| MOLLY KEMP | TREASURER Trustee or director, Officer | – | $0 |
| REBEKAH CONTRERAS | DIRECTOR Trustee or director | – | $0 |
| JERRY DZUGAN | DIRECTOR Trustee or director | – | $0 |
| HANK LENTFER | DIRECTOR Trustee or director | – | $0 |
| SHUBHRA MURARKA | DIRECTOR Trustee or director | – | $0 |
| ALISA REGASSA | ALUMNI REPRE Trustee or director | – | $0 |
990 for the year ended December 31, 2023: 8 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| JESSICA LINDMARK | PRESIDENT Trustee or director, Officer | – | $0 |
| DR AMITY WILCZEK | VICE PRESIDE Trustee or director, Officer | – | $0 |
| ELIZABETH HILLSTROM | SECRETARY Trustee or director, Officer | – | $0 |
| MOLLY KEMP | TREASURER Trustee or director, Officer | – | $0 |
| REBEKAH CONTRERAS | DIRECTOR Trustee or director | – | $0 |
| ATTICUS HEMPEL | ALUMNI REPRE Trustee or director | – | $0 |
| HANK LENTFER | DIRECTOR Trustee or director | – | $0 |
| SHUBHRA MURARKA | DIRECTOR Trustee or director | – | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 100, GUSTAVUS, AK 99826-0100
- In care of
- % ZACHARY BROWN
- Principal officer (990 for 2025)
- JESSICA LINDMARK
- Signed the 990
- LAURA MARCUS, COEXECUTIVE DIRECTOR
- Phone
- (907) 885-0405
- Website
- TIDELINESINSTITUTE.ORG
- Return prepared by
- CHRISTINE E HARRINGTON CPA LLC
Mission
TIDELINES INSTITUTE IS DEDICATED TO THE EDUCATION AND INSPIRATION OF RISING ENVIRONMENTAL LEADERS WITHIN THE PHENOMENAL SETTING OF SOUTHEAST ALASKA.
Program accomplishments
- EDUCATION AND INSPIRATION OF RISING ENVIRONMENTAL LEADERSExpenses $540,784 · revenue $234,113
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 47-2128576
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- School
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2015
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Education (B99)
- Assets (IRS master file)
- $3,929,770
- Income (IRS master file)
- $968,211
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $966,548 | $827,213 | $3,929,770 | XML |
| 990 | December 2024 | $1,243,938 | $761,939 | $3,924,153 | XML |
| 990 | December 2023 | $1,021,045 | $594,102 | $3,316,902 | XML |
| 990 | December 2022 | $834,304 | $625,153 | $2,893,840 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2019 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS publishes only the latest e-Postcard per organization; earlier years appear here as 990.tax collects the monthly files. 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS.
Questions about TIDELINES INSTITUTE
- What is the EIN of TIDELINES INSTITUTE?
- The employer identification number (EIN) of TIDELINES INSTITUTE is 47-2128576.
- Is TIDELINES INSTITUTE tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2015.
- Are donations to TIDELINES INSTITUTE tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does TIDELINES INSTITUTE file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of TIDELINES INSTITUTE due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did TIDELINES INSTITUTE last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of TIDELINES INSTITUTE?
- The 990 for the year ended December 31, 2025 names JESSICA LINDMARK.
- Who are the officers and directors of TIDELINES INSTITUTE?
- The 990 for the year ended December 31, 2025 lists 8 people; 0 received compensation from the organization.
- How much revenue does TIDELINES INSTITUTE have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $966,548, expenses of $827,213 and total assets of $3,929,770 at year end.
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- ROOKERY AT GUSTAVUS EIN 32-0205731 · last filed 990-N for 2023
- GUSTAVUS COMMUNITY CENTER EIN 27-1710606 · last filed 990 for 2024
- SOUTHEAST ALASKA WILDERNESS EXPLORATION ANALYSIS AND DISCOVERY EIN 92-0168869 · last filed 990-N for 2025
- CHINOOK FOUNDATION EIN 27-0692480 · last filed 990-PF for 2025
- GUSTAVUS HELPING HANDS EIN 82-0744443 · last filed 990-N for 2025
- GUSTAVUS VOLUNTEER FIRE DEPARTMENT ASSOCIATION EIN 82-1721188 · last filed 990-N for 2025
- GUSTAVUS VISITORS ASSOCIATION EIN 92-0122617 · last filed 990-N for 2025
- FRIENDS OF GLACIER BAY EIN 92-0089898 · last filed 990-N for 2025