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US nonprofit · EIN 863022293 · Glendale, NYiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 863022293) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe tenure.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2024: assets, liabilities, staff, website, telephone, pay.Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue (us-approach-v4-clean). Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Grinding Stone Collective Inc

Donations deductible
Revenue
$240k
year to 31 December 2024
Expenses
$240k
year to 31 December 2024
Total assets
$221k
$199k liabilities
Net assets
$22k
assets less liabilities
Directors and trustees
6
4.3y av
Staff
2
employees, year to 31 December 2024
Left since last filing
0
no seats appear to have opened
Officers and senior staff
2
named in Part VII
How am I connected?

Grinding Stone Collective Inc's network

6 peoplei6 people on this map.The large node is the subject of this page. Solid lines are what the register itself records (6). Form 990 filings give names without a person identifier; SEC insider filings carry a CIK.

The board

6 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.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 6 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Brooke RodriguezCEO and Board Vice President2023
3 yrs
Emma-Lee JoeBoard Member2022
4 yrs
Luis Kacian CalderonBoard Member2022
4 yrs
Marina BartelliTreasurer2022
4 yrs
Mary OpwamCompany secretary2022
4 yrs
Sid Whiting JRPresident2022
4 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

2 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Brooke RodriguezProgram Director2021
Desire CaneDirector of Communication2021

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.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Brooke RodriguezCEO and Board Vice President40$92k
Sid Whiting JrPresident1$0
Mary OpwamSecretary1$0
Marina BartelliTreasurer1$0
Emma-Lee JoeBoard Member1$0
Luis Kacian CalderonBoard Member1$0

About

Legal name
Grinding Stone Collective Inc
EIN
863022293
Address
8255 88th Ln, Glendale, NY, 11385-7800
State
New York
Mission
To build strong, self-sufficient indigenous communities and to build connections between urban and rural natives. We are committed to creating innovative, impactful, and sustainable solutions to the challenges facing US as indigenous people today. (as filed on the Form 990)
Activity (NTEE)
S20 Community improvement and capacity building
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Community Improvement & Capacity Building
Size band
4 (IRS master file code)
Formed
2020
Principal officer
Marina Bartelli (as named on the Form 990)
IRS ruling date
1 August 2022
Status
Code 01 (unconditional exemption)
Form 990 filings on record
3, latest 2024
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥4years on the filingsEmma-Lee Joe
≥4years on the filingsLuis Kacian Calderon
≥4years on the filingsMarina Bartelli
≥4years on the filingsMary Opwam

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
$221k
Total liabilities
$199k
Net assets or fund balances
$22k
Contributions and grants received
$240k
Program service revenue
$0
Employees
2

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$240k$240k$0

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.
Grinding Stone Collective 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
15 April 2021
Registered agent
Not stated