East Rock Institute Inc
Donations deductibleRevenue
$106k
year to 31 December 2024
Expenses
$60k
year to 31 December 2024
Total assets
$259k
$1k liabilities
Net assets
$257k
assets less liabilities
Directors and trustees
7
6.7 years on average
Chair observed
≥6 yrs
Hesung Chun Koh
Left since last filing
0
no seats appear to have opened
Officers and senior staff
1
named in Part VII
East Rock Institute Inc's network
7 people2 organisationsi7 people and 2 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (7). Violet dotted lines (2) 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
7 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.| Name | Role as filed | Since | On the board |
|---|---|---|---|
| Hesung Chun KOH Chair (also filed as Hesung Chun Koh) | Chair, Advisor | 2018 | 8 yrs |
| Charles M Smith | Company secretary | 2018 | 8 yrs |
| Delphine KO | Treasurer | 2024 | 2 yrs |
| Harry SY NAM (also filed as Harry SY Nam) | Vice Chair | 2018 | 8 yrs |
| Heseung Ann Song (also filed as Heseung Ann Song) | Director | 2018 | 8 yrs |
| Robert Osborne | President, Director | 2018 | 8 yrs |
| Yeojin Kim | Director | 2024 | 2 yrs |
Under 5 years5 to 6 years6 years or more
Officers and senior leadership
1 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 |
|---|---|---|
| Kyungseo Park | Executive Director | 2022 |
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 |
|---|---|---|---|---|---|
| Christopher Y Park | Director, Advisor | 5 | $0 | ||
| Yeojin Kim | Director | 1 | $0 | ||
| Hae-Chan Park | Legal Counsel and Advisor | 1 | $0 | ||
| Heseung Ann Song | Director | 5 | $0 | ||
| Sandra D Wirth | Director, Advisor | 3 | $0 | ||
| Terri Stangl | Advisor | 5 | $0 | ||
| Hesung Chun Koh | Chair, Advisor | 40 | $0 | ||
| Harry Sy Nam | Vice Chair | 5 | $0 | ||
| Delphine Ko | Treasurer | 1 | $0 | ||
| Charles M Smith | Secretary | 1 | $0 | ||
| Robert Osborne | President, Director | 5 | $0 |
No pay was reported for anyone in Part VII on this return.
About
- Legal name
- East Rock Institute Inc
- EIN
- 222804870
- Address
- 200 Leeder Hill Dr Apt 333, Hamden, CT, 06517-2798
- State
- Connecticut
- Activity (NTEE)
- R30Z Civil rights, social action and advocacy
- IRS classification
- 501(c)03 (tax-exempt under section 501(c)(3) where shown)
- Classified purpose
- Civil Rights, Social Action & Advocacy
- Size band
- 4 (IRS master file code)
- IRS ruling date
- 1 August 1987
- Status
- Code 01 (unconditional exemption)
- Form 990 filings on record
- 5, latest 2024
- IRS Publication 78
- PC (contributions deductible)
Most connected
Longest observed on the filings
≥8years on the filingsHesung Chun KOH
≥8years on the filingsCharles M Smith
≥8years on the filingsHarry SY NAM
≥8years on the filingsHeseung Ann Song
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
- $259k
- Total liabilities
- $1k
- Net assets or fund balances
- $257k
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 | $106k | $60k | $46k |
As filed on the IRS Form 990. US dollars.
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.East Rock 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: Connecticut Secretary of the State, business registry and officers (data.ct.gov n7gp-d28j and ka36-64k6). Licence not stated. Data last fetched 18 October 2026.
- State
- Connecticut
- Entity type
- Non-Stock
- Status
- Active - Annual report due
- Formed
- 1 December 1986
- Registered agent
- Hesung Chun Koh (city and state not held)
Officers (2)
- Hesung Chun Koh Director
- James Robert Osborne Officer
City and state of officers are not held in this extract.