Guardian Research Network Inc
Guardian Research Network Inc is a private foundation focused on Diseases, Disorders & Medical Disciplines, based in Spartanburg, SC. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $7.1M in total assets. In 2025, it made $13.2M in qualifying distributions. Net investment income was $208.
Key facts about Guardian Research Network Inc
- EIN
- 81-1145518
- Latest 990 filing
- Form 990-PF, 2025
- Total assets
- $7,071,580
Data from IRS Form 990-PF, 2025; updated September 2026.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$7.1M
+153.5% YoY
Revenue
$16.1M
+108.3% YoY
Qualifying Distributions
$13.2M
+50.8% YoY
Expenses
$13.3M
+51.6% YoY
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Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 0 recipients in 2025
Grant Size Distribution
0 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for 2025.
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $7,071,580 | $2,790,030 | $2,232,303 |
| Revenue | $16,088,992 | $7,722,415 | $9,828,192 |
| Expenses | $13,324,058 | $8,786,577 | $11,927,499 |
| Qualifying Distributions | $13,188,674 | $8,743,039 | $10,921,535 |
| Net Investment Income | $208 | — | — |
| Distributable Amount | — | — | — |
Data update history
When this profile's IRS filing data changed on Grantable
- Added Form 990 for fiscal year 2019 (received by the IRS August 17, 2020)
- Added Form 990-PF for fiscal year 2025 (received by the IRS August 12, 2026)
- IRS filings on file for fiscal years 2020–2024
Leadership & Key People
Officers and directors from IRS filings
Guardian Research Network Inc is led by E. Bruce Holstien, Chairman & CEO on every filing since 2021; 5 of 14 officers listed in 2023 are compensated.
Officers on the 2023 filing
E. Bruce Holstien
Chairman & CEO
On filings since 2021
4 hrs/week
No compensation reported
Mark Watson MD PhD
Director & Chief Medical Officer
Vice Chairman & COO → Director & COO, 2022
Director & COO → Director & Chief Medical Officer, 2023
On filings since 2019
40 hrs/week
$314K (2019) → $326K (2023)
Mark Billings
Director
On filings since 2019
1 hr/week
No compensation reported
Robert D. Siegel MD
Director
On filings since 2019
1 hr/week
No compensation reported
Gerald Colman
Director
On filings since 2021
1 hr/week
No compensation reported
Jay W. Carlson
Director
On filings since 2021
1 hr/week
No compensation reported
Michael J. Zinner MD
Director
On filings since 2021
1 hr/week
No compensation reported
Matthew Johnson MD
Director
On filings since 2022
1 hr/week
No compensation reported
Gian Varbaro
Director
New on the 2023 filing
1 hr/week
No compensation reported
Adam Chasse
Chief Business Development Officer
Vice President Clinical Ops → Chief Business Development Officer, 2023
On filings since 2019
40 hrs/week
$250K (2019) → $358K (2023)
Charlie Hurmiz
Chief Technology Officer
New on the 2023 filing
40 hrs/week
$281K (2023)
Shirley Trainor-Thomas
Chief Administrator Officer
New on the 2023 filing
40 hrs/week
$205K (2023)
Stephen Hall
CFO
New on the 2023 filing
40 hrs/week
$262K (2023)
Robert E. Bakin
Chief Compliance Officer
CCO & Cpo → Chief Compliance Officer, 2023
On filings since 2021
40 hrs/week
No compensation reported
Former officers (9)
- Former: Caio Max S. Rocha Lima MD (2019–2021) — Chief Medical Officer
- Former: Bruce Holstein (2019–2020) — Chairman & CEO
- Former: Colleen Queeny (2019–2020) — Director of Project Mgt
- Former: Fred McQuery MD (2019–2020) — Director
- Former: Harry McKeon (2019–2020) — Quality Assurance Manager
- Former: Juandalynn Heslop (2019–2020) — Manager Legal Affairs & New Partner Mgt
- Former: Ryan Owens (2019–2020) — Nlt & Ai Manager
- Former: Timothy Jahn (2019–2020) — Director
- Former: Timothy Yeatman Md Facs (2019–2020) — Chief Scientific Officer & Director
Data from IRS Form 990 filings, 2019–2023. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2023 IRS filing
Frequently asked questions about Guardian Research Network Inc
How large is Guardian Research Network Inc?
Guardian Research Network Inc reported $7.1M in total assets on its 2025 IRS Form 990-PF. Its revenue that year was $16.1M.
What is Guardian Research Network Inc?
Guardian Research Network Inc is a private foundation focused on Diseases, Disorders & Medical Disciplines, based in Spartanburg, SC. It holds $7.1M in total assets as of 2025.
What is Guardian Research Network Inc's EIN?
Guardian Research Network Inc's EIN (Employer Identification Number) is 81-1145518. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
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Explore Open Grants
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Guardian Research Network Inc down — hundreds of funders to go?