Skip to main content
IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 35-2798272

TLON

Tax-exempt · BROOKLYN, NY 11210

Financials

$115K$113K2023$260K$196K2024$333K$252K2025
Revenue Expenses · by fiscal year end
Financials of TLON by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$333,206$252,311$80,895$157,607$8,100$149,507
December 31, 2024990$259,836$196,197$63,639$68,612$0$68,612
December 31, 2023990-EZ$115,000$112,670$2,330$2,330$0$2,330
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$326,536
Program service revenue
$0
Investment income
$6,670
Other revenue
$0

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$65,000
Other salaries and wages
$134,500
Salaries, compensation and benefits (total)
$199,500
Professional fundraising fees
$0
Legal fees
$195
Occupancy
$131
Travel
$2,599
Program services (functional)
$235,442
Management and general (functional)
$16,869

Balance sheet and other

Total assets, start of year
$68,612
Total assets, end of year
$157,607
Total liabilities, end of year
$8,100
Net assets, end of year
$149,507
Gross receipts
$333,206
Employees
0
Volunteers
2
Year formed
2023
State of legal domicile
TX

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.

NameTitleHours / weekCompensationOther / benefits
Pablo StafforiniPresident
Trustee or director, Officer
40$0$65,000
Johannes TreutleinTreasurer
Trustee or director, Officer
0.5$0$0
David AlthausSecretary
Trustee or director, Officer
0.5$0$0
990 for the year ended December 31, 2024: 3 people
NameTitleHours / weekCompensation
Pablo StafforiniDirector
Trustee or director
40$54,167
Johannes TreutleinTreasurer
Trustee or director
0.01$0
David AlthausSecretary
Trustee or director
0.01$0
990-EZ for the year ended December 31, 2023: 3 people
NameTitleHours / weekCompensation
Pablo StafforiniDirector40$65,000
Johannes TreutleinTreasurer1$0
David AlthausSecretary1$0

Address and contacts

Address (IRS master file)
2918 AVENUE I PMB 1159, BROOKLYN, NY 11210-2935
Principal officer (990 for 2025)
Pablo Stafforini, Piedras 1700, Buenos Aires, CABA C1140ABJ, AR
Signed the 990
Pablo Stafforini, Director
Phone
(218) 865-9611

Mission

Tlon translates content related to effective altruism, existential risk, and global priorities research into multiple languages.

990 for the year ended December 31, 2025

Program accomplishments

  • Translation and Dissemination of Effective Altruism Texts. Services Provided: Our organization embarked on a critical mission to bridge the language barrier and widen the accessibility of influential texts on effective altruism. Recognizing the importance of making these pivotal resources available to a broader audience, we dedicated our efforts to meticulously translating key texts from English to Spanish, French and Italian. This initiative was aimed at empowering non-English-speaking individuals by providing them with access to valuable knowledge and insights that were previously inaccessible due to language constraints. Achievements: Successfully completed and published the translation of hundreds of articles and audio files related to effective altruism, ensuring that the core principles, methodologies, and impactful insights are preserved and conveyed accurately in Spanish, French, Italian, Turkish, Korean and Japanese. Number of Persons Benefited: Our translated materials are slated for distribution through several digital platform, reaching thousands of individuals across various countries. This estimate is based on our current subscription base and engagement rates on social media platforms. Community Impact and Future Objectives: By making these effective altruism texts available in Spanish, we aim to foster a more inclusive and diverse dialogue around ethical considerations, philanthropy, and rational decision-making for the greater good. Our initiative seeks to equip non-English-speaking communities with the tools needed for informed participation in global altruistic movements. Moving forward, we intend to expand our translation efforts to include additional vital resources in other languages. This translation project represents a significant step towards fulfilling our organization's exempt purpose of educational advancement and promotion of altruistic principles. By dismantling language barriers, we are not only expanding the reach of important philosophical and practical guidance on effective altruism but also enriching the global conversation with diverse perspectives from non-English-speaking communities.
    Expenses $235,442

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 yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990 on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990-EZ on file

IRS record

EIN
35-2798272
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2024
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$157,607
Income (IRS master file)
$333,206

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$333,206$252,311$157,607IRS
990December 2024$259,836$196,197$68,612IRS
990-EZDecember 2023$115,000$112,670$2,330XML

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 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 (search EIN 35-2798272).

Questions about TLON

What is the EIN of TLON?
The employer identification number (EIN) of TLON is 35-2798272.
Is TLON tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2024.
Are donations to TLON tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does TLON 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 TLON 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 TLON 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 TLON?
The 990 for the year ended December 31, 2025 names Pablo Stafforini.
Who are the officers and directors of TLON?
The 990 for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
How much revenue does TLON have?
On its 990 for the year ended December 31, 2025 it reported revenue of $333,206, expenses of $252,311 and total assets of $157,607 at year end.

Other nonprofits in BROOKLYN

All nonprofits in BROOKLYN · New York · Arts, culture and humanities