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The Hdf Group

EIN 68-0600605 · Champaign, IL

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthGood82 out of 100GovernanceStrong93 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

THE ORGANIZATION'S PRIMARY EXEMPT PURPOSE IS TO ENSURE THE SUSTAINABILITY OF HDF TECHNOLOGIES AND ONGOING ACCESSIBILITY OF HDF-STORED DATA FOR THE GOVERNMENT AGENCIES AND ORGANIZATIONS THAT HAVE MISSION-CRITICAL SYSTEMS RELYING ON HDF. SPECIFICALLY, THE ORGANIZATION'S MISSION IS TO DEVELOP AND MAINTAIN FREE, OPEN SOURCE COMPUTER APPLICATIONS THAT MOVE AND STORE SCIENTIFIC AND COMPLEX DATA AMONG DISPARATE COMPUTING SYSTEMS. THERE ARE OVER 200 DIFFERENT TYPES OF COMPUTER APPLICATIONS USING HDF TECHNOLOGIES, AND AN ESTIMATED 1.6 MILLION USERS OF NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (NASA) DATA ALONE, IN HDF FORMATS.

Income
$3.0 million
Spending
$3.2 million
Spent on programs
75%
Reserves
6.1 months of spending
Largest source of income
fees for its services, 93%
Employees
21
Volunteers
0
Highest pay
$208,669, executive director

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Good: 82 out of 100. Higher than 61% of charities in its peer group (science, $1m to $10m).

  • Reserves

    28 of 35

    Spendable reserves would cover 6.1 months of spending.

  • Debt

    16 of 20

    It owes 21% of what it owns.

  • Living within its means

    8 of 15

    Spending exceeded income by 3% of income.

  • Income trend

    15 of 15

    Income rose 22% on the year before.

  • Spending floor

    15 of 15

    74% of spending went to programs and raising each dollar of donations cost 0 cents.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Strong: 93 out of 100. Higher than 57% of charities in its peer group (science, $1m to $10m).

  • Independent board

    18 of 25

    3 of 3 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    8 of 8

    Has a written whistleblower policy.

  • Record keeping policy

    7 of 7

    Has a written policy on keeping and destroying records.

  • Board minutes

    5 of 5

    Keeps minutes of board meetings.

  • Board sees the tax return

    10 of 10

    Gave the board a copy of this return before filing it.

  • Pay set independently

    5 of 5

    Sets its chief executive's pay through independent review and comparison.

  • Independent check of accounts

    15 of 15

    Its accounts were audited by an independent accountant.

  • No reported misuse

    10 of 10

    Reports no diversion of assets, excess benefits or loans to insiders.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (1)
  1. $2.3 million spent. THE HDF GROUP RESEARCHED, DEVELOPED, AND TESTED MODIFICATIONS TO HDF5 TO EXPAND FUNCTIONALITY, IMPROVE PERFORMANCE, AND INCREASE USABILITY OF HDF5.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  2. Has the IRS revoked its tax-exempt status? Passed.

    Not on the IRS automatic revocation list.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated September 30, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated September 10, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2025.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since August 2006.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 7, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.