Open Space Institute Inc
Donations deductibleOpen Space Institute Inc's network
28 people23 organisationsi28 people and 23 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (28). Violet dotted lines (48) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.The board
28 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record. The organisation reported 27 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.| Name | Role as filed | Since | On the board |
|---|---|---|---|
| Amelia Salzman Chair | Co-Chairperson of the Board | 2018 | 8 yrs |
| Anson Frelinghuysen | Member | 2019 | 7 yrs |
| Carol ASH | Vice-Chairperson of the Board | 2018 | 8 yrs |
| Carolyn Niemczyk | Member | 2022 | 4 yrs |
| Dale S Bryk | Member | 2018 | 8 yrs |
| Douglas Bateson | Member | 2018 | 8 yrs |
| Elizabeth Borden | Member | 2018 | 8 yrs |
| Gigi Mortimer | Member | 2024 | 2 yrs |
| Giorgios Vlamis | Member | 2019 | 7 yrs |
| Holly Hegener | Member | 2018 | 8 yrs |
| Hume R Steyer | Company secretary | 2018 | 8 yrs |
| John Ernst | Member | 2018 | 8 yrs |
| John H Adams (also filed as John Adams) | Co-Chair of the Board (Outgoing) | 2018 | 8 yrs |
| John P Cahill (also filed as John Cahill) | Member | 2018 | 8 yrs |
| Joshua Ginsberg PHD (also filed as Joshua Ginsberg) | Member | 2018 | 8 yrs |
| Jude WU Abel | Member | 2023 | 3 yrs |
| Katherine O Roberts | Member | 2018 | 8 yrs |
| LEA Paine Highet | Member | 2018 | 8 yrs |
| Leisle LIN | Member | 2024 | 2 yrs |
| Marjorie Van Dercook | Member | 2023 | 3 yrs |
| Nicole Hylton-Patterson | Member | 2023 | 3 yrs |
| Patricia F Sullivan | Member | 2018 | 8 yrs |
| Richard Remmer | Member | 2024 | 2 yrs |
| Samuel G Huber | Member | 2018 | 8 yrs |
| Susan Babcock | Member | 2018 | 8 yrs |
| T Jefferson Cunningham III | Member | 2018 | 8 yrs |
| Thomas McHenry | Member | 2022 | 4 yrs |
| Yuki Moore Laurenti | Member | 2018 | 8 yrs |
Officers and senior leadership
37 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.| Name | Title as filed | On the filings |
|---|---|---|
| Abigail Weinberg | VP of Science & Conservation Policy | since 2018 |
| Alice Gleason | SVP for Finance, CFO | since 2019 |
| Bradford Burns | Staff Attorney | since 2023 |
| Brooks Kieran-Kaufman | Staff Attorney | 2020 |
| Christopher J Elliman | President and CEO | since 2018 |
| David Kieran-Kaufman | Vice President and Assistant General Counsel | since 2022 |
| Eileen Larabee | SVP for Communications | since 2018 |
| Erik Kulleseid | SVP, Nys Parks (Left 1/21/19) | since 2018 |
| Garraud Etienne | Chief Operation Officer (Outgoing) | since 2022 |
| Irene Lee | VP of Land, Northeast | since 2019 |
| Jeffrey Lejava | VP and Associate General Counsel | since 2018 |
| Jennie Greer | SVP of Philanthropy | since 2023 |
| Jennifer Melville | VP, Conserv. Grants & Loans | since 2018 |
| Jessica Watson | VP of Conservation Communities | 2024 |
| Joseph Holland | Asst. Treasurer/Controller | since 2018 |
| Katherine Petronis | Director Northern Program | 2019 |
| Kathleen Moser | Sr VP - Parks & Policy | since 2019 |
| Lars Kulleseid | President & CEO (Incoming 04/24) | 2024 |
| Lesley Kane Szynal | Director of Outdoors America | since 2018 |
| Leslie Kane Szynal | Director - Outdoors America | 2019 |
| Lorijeane Moody | VP - Development | since 2018 |
| Maria Whitehead | VP of Land, Southeast | since 2022 |
| May May Cheng | Vice President, Controller | since 2022 |
| Melanie Griffin | Sr. Dir of Institutional Giving | 2024 |
| Michael Baden | Sr. Dir of Administration | since 2022 |
| Nathan Berry | Vice President | since 2018 |
| Nick Richardson | SVP, Capital Strategies | since 2023 |
| Peter Howell | Executive VP, Conservation | since 2018 |
| Peter Karis | VP, Parks and Stewardship | since 2020 |
| Rachel Pivnick | SVP & CFO (Left 3/29/19) | since 2018 |
| Rebekah Gerard | Sr. Dir of Admin (Outgoing 12/24) | since 2018 |
| Robert K Anderberg | SVP, General Counsel | since 2018 |
| Samayla Deutch | SVP, General Counsel | since 2018 |
| Steven Horowitz | Chief Legal & Risk Officer (Outgoing) | since 2019 |
| Tally Blumberg | SVP, Programs | since 2018 |
| Terrance Nolan | Sr VP - Conservation | 2019 |
| Terrence Nolan | SVP, Conservation Transact | since 2018 |
Pay and hours
year to 31 December 2024iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.| Name | Title as filed | Hours a week | Pay from the organisation | Related organisations | Other |
|---|---|---|---|---|---|
| Nathan Berry | Chief Land, Protection Officer | 2 | $357k | $26k | |
| Lars Kulleseid | President & CEO (Incoming 04/24) | 2 | $354k | $37k | |
| Tally Blumberg | Executive Vice President | 2 | $353k | $50k | |
| Lesley Kane Szynal | Director of Outdoors America | 2 | $318k | $12k | |
| Christopher J Elliman | President & CEO (Outgoing 05/24) | 2 | $317k | $30k | |
| Eileen Larabee | Chief External Affairs Officer | 2 | $313k | $51k | |
| Kathleen Moser | Chief Conservation/Policy | 2 | $276k | $12k | |
| Samayla Deutch | SVP, General Counsel | 2 | $270k | $37k | |
| Alice Gleason | SVP for Finance & CFO | 2 | $265k | $27k | |
| Robert K Anderberg | SVP, General Counsel | 2 | $248k | $38k | |
| Jeffrey Lejava | Vice Pres. & Associate Gen. Counsel | 2 | $229k | $48k | |
| Jennie Greer | SVP of Philanthropy | 2 | $222k | $43k | |
| Maria Whitehead | VP of Land, Southeast | 2 | $213k | $49k | |
| Nick Richardson | SVP, Capital Strategies | 2 | $210k | $45k | |
| Rebekah Gerard | Sr. Dir of Admin (Outgoing 12/24) | 2 | $202k | $30k | |
| Peter Karis | VP, Parks and Stewardship | 2 | $184k | $49k | |
| Irene Lee | VP of Land, Northeast | 2 | $172k | $50k | |
| Abigail Weinberg | VP of Science & Conservation Policy | 2 | $171k | $48k | |
| Bradford Burns | Staff Attorney | 2 | $170k | $8k | |
| David Kieran-Kaufman | Vice President and Assistant General Counsel | 2 | $168k | $48k | |
| May May Cheng | Vice President, Controller | 2 | $159k | $44k | |
| Michael Baden | Sr. Dir of Administration | 2 | $145k | $37k | |
| Melanie Griffin | Sr. Dir of Institutional Giving | 2 | $143k | $25k | |
| Jessica Watson | VP of Conservation Communities | 2 | $139k | $52k | |
| Amelia Salzman | Co-Chairperson of the Board | 3 | $0 | ||
| Anson Frelinghuysen | Member | 1 | $0 | ||
| Carol Ash | Vice-Chairperson of the Board | 1 | $0 | ||
| Carolyn Niemczyk | Member | 1 | $0 | ||
| Dale S Bryk | Member | 1 | $0 | ||
| Douglas Bateson | Member | 1 | $0 | ||
| Elizabeth Borden | Member | 1 | $0 | ||
| Gigi Mortimer | Member | 1 | $0 | ||
| Giorgios Vlamis | Member | 1 | $0 | ||
| Holly Hegener | Member | 1 | $0 | ||
| Hume R Steyer | Secretary | 1 | $0 | ||
| John Ernst | Member | 1 | $0 | ||
| John H Adams | Co-Chair of the Board (Outgoing) | 3 | $0 | ||
| John P Cahill | Member | 1 | $0 | ||
| Joshua Ginsberg PhD | Member | 1 | $0 | ||
| Jude Wu Abel | Member | 1 | $0 |
Colorado roster
48 listediOfficers, directors and trustees from the latest filing with the Colorado Secretary of State (document 20253034865). Titles are as filed; some entries are registered agents or custodians of records rather than board members. Source: data.colorado.gov, public domain.| Name | Title as filed |
|---|---|
| John Ernst | Member |
| John P. Cahill | Member |
| Douglas Bateson | Member |
| May May Cheng | |
| Hume R. Steyer | Secretary |
| May May Cheng | Vice President, Controller |
| David Kieran-Kaufman | Vice President and Assistant General |
| Tally Blumberg | Executive Vice President |
| Jeffrey Lejava | Vice President and Associate General Counsel |
| Christopher J. Elliman | President & CEO (Outgoing 05/24) |
| Robert K. Anderberg | Senior Vice President, General Counsel |
| Irene Lee | Vice President of Land, Northeast |
| Kathleen Moser | Chief Conservation/Policy Officer |
| Gigi Mortimer | Member |
| Alice Gleason | SVP for Finance & CFO |
| Susan Babcock | Member |
| Holly Hegener | Member |
| Thomas McHenry | Treasurer |
| Yuki Moore Laurenti | Member |
| Jessica Watson | VP of Conservation Communities |
| Nick Richardson | Senior Vice President, Capital Strategies |
| Carol Ash | Member |
| Samuel G. Huber | Member |
| Peter Karis | Vice President for Parks and Stewardship |
| Lars Kulleseid | President & CEO (Incoming 04/24) |
| Leslie Lin | Member |
| Lea Paine Highet | Member |
| Carolyn Niemzyk | Member |
| Joshua Ginsberg | Member |
| Elizabeth Borden | Member |
| Majorie van Dercook | Member |
| Amelia Salzman | Chairperson of the Board |
| Lars Erik Kulleseid | President & Chief Executive Officer |
| Richard Remmer | Member |
| Abigail Weinberg | VP of Science & Conservation Policy |
| Eileen Larrabee | Executive Vice President & Chief of Staff |
| Maria Whitehead | SVP of Land, Southeast |
| T. Jefferson Cunningham, III | Member |
| Dale S. Bryk | Member |
| Giorgios Vlamis | Vice-Chairperson of the Board |
| Samayla Deutch | Senior Vice President, General Counsel |
| Jennie Greer | Senior Vice President of Philanthropy |
| Jude Wu Abel | Member |
| Nicole Hylton-Patterson | Member |
| Anson Frelinghuysen | Member |
| Katherine O. Roberts | Member |
| Nathan Berry | Chief Land, Protection Officer |
| Patricia F. Sullivan | Member |
About
- Legal name
- Open Space Institute Inc
- EIN
- 521053406
- Address
- 1370 Broadway FL 5, New York, NY, 10018-7350
- State
- New York
- Mission
- Osi protects land for clean drinking water, public recreation, healthy communities, and wildlife habitat; and to conserve intact forests and floodplains that capture and store carbon and protect against increasingly dangerous weather events. (as filed on the Form 990)
- Activity (NTEE)
- C30 Environment
- IRS classification
- 501(c)03 (tax-exempt under section 501(c)(3) where shown)
- Classified purpose
- Environment
- Size band
- 8 (IRS master file code)
- Formed
- 1974
- Principal officer
- Lars Erik Kulleseid (as named on the Form 990)
- IRS ruling date
- 1 January 1966
- Status
- Code 01 (unconditional exemption)
- Form 990 filings on record
- 6, latest 2024
- IRS Publication 78
- PC (contributions deductible)
Most connected
Related organisations (Schedule R)
Longest observed on the filings
≥8years on the filingsAmelia Salzman
≥8years on the filingsCarol ASH
≥8years on the filingsDale S Bryk
≥8years on the filingsDouglas Bateson
Latest return
year to 31 December 2024iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2024. US dollars, as filed.- Total assets
- $23.3m
- Total liabilities
- $15.8m
- Net assets or fund balances
- $7.5m
- Contributions and grants received
- $6.2m
- Program service revenue
- $360k
- Grants and similar paid out
- $588k
- Employees
- 86
- Volunteers
- 27
Filed finances
1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.| Tax year | Total revenue | Total expenses | Surplus or deficit |
|---|---|---|---|
| 2024 | $6.9m | $3.7m | $3.2m |
As filed on the IRS Form 990. US dollars.
Grants paid
19 listediFrom Schedule I of the Form 990: grants and assistance to organisations in the United States, largest first (up to 25). Schedule I is filed only by organisations that gave more than $5,000 to any one recipient.| Recipient | Purpose | Amount |
|---|---|---|
| Spiral House Park | Citizen action program | $356k |
| Beaverkill Valley Land Trust Inc | $72k | |
| The Relato Agency LLC | Citizen action program | $29k |
| Two Evergreen Machine LLC | Citizen action program | $19k |
| Land to Learn | Malcolm gordon charitable fund | $10k |
| Newburgh Urban Farm and Food Inc | Malcolm gordon charitable fund | $10k |
| Arm of the Sea Productions Inc | Malcolm gordon charitable fund | $7k |
| Ecological Citizens Project Inc | Malcolm gordon charitable fund | $7k |
| Outdoor Promise | Malcolm gordon charitable fund | $7k |
| Vassar College | Mchenry hudson river valley awards | $7k |
| Briarcliff Manor-Scarborough Historical Society | Mchenry hudson river valley awards | $6k |
| Good Work Institute Inc | Malcolm gordon charitable fund | $6k |
| Hudsn RVR Sloop Clearwater Inc | Malcolm gordon charitable fund | $6k |
| Poughkeepsie Farm Project | Malcolm gordon charitable fund | $6k |
| Saratoga Plan Inc | Mchenry hudson river valley awards | $6k |
| Stony Kill Foundation Inc | Malcolm gordon charitable fund | $6k |
| The Freedom Food Alliance Inc | Mchenry hudson river valley awards | $6k |
| The Fullerton Mansion Center for Culture and History | Mchenry hudson river valley awards | $6k |
| The Wallkill Valley Land Trust | Mchenry hudson river valley awards | $6k |
State registration
1 entityiBusiness-entity registers published by US states. These records are matched to this organisation by name and state, not by EIN, and are labelled as likely matches. Street addresses are not shown.Open Space Institute, Inc. likely matchiMatched by exact name and state (and ZIP where shown). State registers do not publish EINs, so this is not a confirmed match. Source: New York Department of State, active corporations (data.ny.gov n9v6-gdp6). Licence: New York open data terms of use. Data last fetched 18 October 2026.
- State
- New York
- Entity type
- Domestic Not-For-Profit Corporation
- Status
- Active
- Formed
- 25 July 1974
- Registered agent
- Incorp Services, Inc. (city and state not held)