Tlon

Nonprofit profile at a glance

EIN
352798272
IRS 990 coverage
2024–2025
Forms available
Form 990 2025, Form 990-EZ 2023
Location
Brooklyn, NY, USA
Phone
2188659611
Rating
64
Verdict
SUPPORTED
Rating confidence
Moderate
Sector
Humanities Organizations

Official website

Reported finances

Revenue
$333,206
Expenses
$252,311
Assets
$157,607
Liabilities
$8,100

Source: IRS Form 990. Selected filing: tax year 2025. Amounts in USD.

Leadership & pay

3 people listed

Executive titles in this filing

  • Pablo Stafforini (President)

Highest reported compensation

  • Pablo Stafforini (President): $65,000 total reported compensation

Source: IRS Form 990. Selected filing: tax year 2025. Names and roles reflect this filing, not necessarily current officeholders.

Overview

Mission

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

What it reported doing in 2025

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.

Operating model

Revenue model
Donor-supported. 98% of the money available for current operations came from contributions and gifts.
Distribution model
Direct operator. The filing allocates 100% of reported program-service expenses outside its grant, affiliate-payment, and member-benefit lines. This expense classification does not rule out separately announced grant awards.

The verdict

SUPPORTED - A large share of available resources goes toward mission work and most voting board members are independent. The filing reports few safeguards for money sent abroad and the filing does not identify recipients for some grant dollars.

Rating breakdown

  • Financial Efficiency: 70
  • Transparency & Controls: 55
  • Accountability: 60
  • Sustainability: 49
  • Growth: 100

Detailed rating inputs

Financial Efficiency

  • Mission deployment rate: 71.2%; rating input score 71
  • Program expense ratio: 93.3%; rating input score 93
  • Fundraising efficiency: Limited

Transparency & Controls

  • Consistency checks: 100%; rating input score 100; 64th percentile among comparable filings
  • Pay-setting controls: Limited
  • Foreign activity oversight: Scored; rating input score 0
  • Grant itemization coverage: Scored; rating input score 0
  • Major donor itemization: Yes; rating input score 100
  • Related-party transparency: Limited

Accountability

  • Independent voting board: 66.7%; rating input score 67; 21st percentile among comparable filings
  • Governance controls: 4 of 8 controls in place; rating input score 50
    • Conflict-of-interest policy: Pass
    • Whistleblower policy: Fail
    • Document-retention policy: Fail
    • CEO compensation review process: Pass
    • Other executive compensation review process: NotApplicable
    • Form 990 shared with the board: Pass
    • Board meeting minutes documented: Pass
    • Audit committee oversight: Missing
    • Independent financial-statement audit: Fail

Sustainability

  • Operating margin: 24.3%; rating input score 76; 76th percentile among comparable filings
  • Total-asset coverage ratio: 0.62; rating input score 29; 29th percentile among comparable filings
  • Liabilities to assets ratio: 0.05; rating input score 27; 27th percentile among comparable filings
  • Officer compensation ratio: 25.8%; rating input score 14; 14th percentile among comparable filings

Growth

  • Program expense growth: 53.7% per year; rating input score 100; 96th percentile among comparable filings
  • Revenue growth: 46.2% per year; rating input score 100; 96th percentile among comparable filings
  • Asset growth: 101.9% per year; rating input score 100; 99th percentile among comparable filings

Details

  • Where the money goes: 71.2% of revenue deployed · 93.3% of spending went to programs
  • Governance: 2 of 3 board members independent · 4 of 8 filing controls reported
  • Programs: 1 filed program accomplishment · $235K in reported program spending
  • Leadership: top reported pay $65K · 3 people listed
  • Consistency: 20 of 20 current checks pass
  • Schedules: 4 filed schedules · includes major donors and foreign activity
  • Filing history: 2 filing years from 2024 to 2025
  • Contacts: How to reach this organization
  • Money network: 1 filed money-flow record
  • Grant readiness: Federal tax and exclusion status, award history, and grant-maker relationships.
  • People: Everyone the filings name, and which of them the filings identify by more than a name.

Key Signals

Signals prioritize questions for review. They are not findings of misconduct.

  • High — Transparency & Controls: Foreign activity oversight scored 0/100.
  • High — Transparency & Controls: Grant itemization coverage scored 0/100.
  • Review — Accountability: Governance controls: 3 of 7 not reported.
  • High — Sustainability: Total-asset coverage ratio scored 29/100.
  • High — Sustainability: Officer compensation ratio scored 14/100.
  • High — Sustainability: Liabilities to assets ratio scored 27/100.