Org for the Study of Sex Differences

Nonprofit profile at a glance

EIN
460562637
IRS 990 coverage
2019–2025
Forms available
Form 990 2025, Form 990-EZ 2021, Form 990-N 2013
Location
Bandera, TX, USA
Phone
8307969393
Rating
70
Verdict
SUPPORTED
Rating confidence
Moderate
Sector
Research Institutes and/or Public Policy Analysis

Official website

Reported finances

Revenue
$206,994
Expenses
$208,148
Assets
$497,153
Liabilities
$30,100

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

Leadership & pay

5 people listed

Executive titles in this filing

  • LIISA GALEA (PAST-PRESIDENT)
  • SOFIA AHMED (PRESIDENT)
  • ARMIN RAZNAHAN (PRESIDENT ELECT)

People named in this filing

  • LIISA GALEA (PAST-PRESIDENT)
  • NATALIE TRONSON (SECRETARY)
  • SOFIA AHMED (PRESIDENT)

Selected names, not a complete roster or a statement of current roles. Open leadership details for the complete filed list.

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

Overview

Mission

To facilitate research on sex/gender differences, to advance the understanding of sex/gender differences, to encourage the application of new knowledge to improve health and health care, and to promote the field of sex/gender differences through education, mentoring and outreach

What it reported doing in 2025

Ossd holds a multidisciplinary annual meeting in order to facilitate the exchange of information about sex differences among researchers. This years meeting was held in albuquerque, New Mexico.

Operating model

Revenue model
Mixed. Its operating money came from several sources; no one source provided a clear majority.
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 the filed numbers largely add up. Some filing-based governance responses are negative or unanswered and program spending has declined or grown slowly.

Rating breakdown

  • Financial Efficiency: 65
  • Transparency & Controls: 84
  • Accountability: 70
  • Sustainability: 46
  • Growth: 60

Detailed rating inputs

Financial Efficiency

  • Mission deployment rate: 73.6%; rating input score 74
  • Program expense ratio: 71.8%; rating input score 72
  • Fundraising efficiency: Limited

Transparency & Controls

  • Consistency checks: 90%; rating input score 90; 10th percentile among comparable filings
  • Pay-setting controls: Limited
  • Foreign activity oversight: Limited
  • Grant itemization coverage: Limited
  • Major donor itemization: Yes; rating input score 100
  • Related-party transparency: Limited

Accountability

  • Independent voting board: 100%; rating input score 100; 64th percentile among comparable filings
  • Governance controls: 2 of 7 controls in place; rating input score 29
    • Conflict-of-interest policy: Fail
    • Whistleblower policy: Fail
    • Document-retention policy: Fail
    • CEO compensation review process: NotApplicable
    • 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: -0.6%; rating input score 34; 34th percentile among comparable filings
  • Total-asset coverage ratio: 2.39; rating input score 64; 64th percentile among comparable filings
  • Liabilities to assets ratio: 0.06; rating input score 26; 26th percentile among comparable filings
  • Officer compensation ratio: 0%; rating input score 67; 67th percentile among comparable filings

Growth

  • Program expense growth: -0.7% per year; rating input score 0; 26th percentile among comparable filings
  • Revenue growth: 8.5% per year; rating input score 100; 64th percentile among comparable filings
  • Asset growth: 15.3% per year; rating input score 100; 76th percentile among comparable filings

Details

  • Where the money goes: 73.6% of revenue deployed · 71.8% of spending went to programs
  • Governance: 21 of 21 board members independent · 2 of 7 filing controls reported
  • Programs: 1 filed program accomplishment · $149K in reported program spending
  • Leadership: top reported pay $0 · 5 people listed
  • Consistency: 17 of 18 current checks pass · 1 finding to review
  • Schedules: 3 filed schedules · includes major donors
  • Filing history: 5 filing years from 2019 to 2025
  • Contacts: How to reach this organization
  • 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 — Accountability: Governance controls: 4 of 6 not reported.
  • High — Growth: Program expense growth scored 0/100.
  • Moderate — Sustainability: Operating margin scored 34/100.
  • Moderate — Transparency & Controls: Schedule A contributions reconciliation did not reconcile in the filed values.
  • High — Sustainability: Liabilities to assets ratio scored 26/100.