Rothberg Institute Inc
Rothberg Institute Inc is a private foundation based in Guilford, Connecticut. Its 2021 filing was marked as its final return, and the filing states that it filed a certificate of dissolution effective January 11, 2022. The organization therefore appears to have wound down; its 2022 filing reports grants that were predominantly transfers to a related party.
Rothberg Institute Inc at a glance
In short: Rothberg Institute Inc gave $5.2M across 12 grants in 2022 (avg $432K), mostly in Florida. Source: 2022 IRS Form 990-PF.
- Annual giving (2022)
- $5,187,867
- +1629.3% vs 2021
- Grants made (2022)
- 12
- +71.4% vs 2021
- Average grant
- $432,322
- +908.8% vs 2021
- Median grant
- $276,050
- Primary geography
- Florida (99% of itemized 2022 grant dollars)
- Latest 990 filing
- Form 990-PF, 2022 View filing
Data from IRS Form 990-PF, 2022; updated October 2026.
How to apply to Rothberg Institute Inc
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation stated in its 2021 filing that it does not accept unsolicited requests and makes contributions only to preselected charitable organizations. This is not presented as a current application process, as the filing was marked final.
- Contact
Mailing address: 530 Whitfield Street, Guilford, CT 06437
Phone: (203) 458-7100
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Rothberg Institute Inc funds
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2022
The largest 2022 recipient was Rothberg Family Charitable Foundati ($5.1M across 11 grants). Together the top 2 received $5.2M.
Grant Size Distribution
23 grants across all recorded years
The most common grant size was in the $50–100K range: 8 grants of 23 (35%).
Geographic Focus
Where this funder awards grants
In 2022, 99% of grant dollars went to recipients in Florida and 1% to recipients in Connecticut.
Grant Distribution by State
Share of 2022 grant dollars across all 12 itemized grants.
Cities
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2022, annual grant giving ranged from $300K (2021) to $5.2M (2022). In 2022 it made 12 grants totaling $5.2M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Rothberg Family Charitable Foundati Highland Beach, FL | The foundation has dissolved and is transferring all assets to a related party. | $1,801,439 |
| Rothberg Family Charitable Foundati Highland Beach, FL | The foundation has dissolved and is transferring all assets to a related party. | $877,300 |
| Rothberg Family Charitable Foundati Highland Beach, FL | The foundation has dissolved and is transferring all assets to a related party. | $581,300 |
| Rothberg Family Charitable Foundati Highland Beach, FL | The foundation has dissolved and is transferring all assets to a related party. | $515,900 |
| Rothberg Family Charitable Foundati Highland Beach, FL | The foundation has dissolved and is transferring all assets to a related party. | $411,900 |
| Rothberg Family Charitable Foundati Highland Beach, FL | The foundation has dissolved and is transferring all assets to a related party. | $291,700 |
| Rothberg Family Charitable Foundati Highland Beach, FL | The foundation has dissolved and is transferring all assets to a related party. | $260,400 |
| Rothberg Family Charitable Foundati Highland Beach, FL | The foundation has dissolved and is transferring all assets to a related party. | $226,500 |
| Rothberg Family Charitable Foundati Highland Beach, FL | The foundation has dissolved and is transferring all assets to a related party. | $119,200 |
| Choate Rosemary Hall Wallingford, CT | To further the awareness of and research for tuberous sclerosis | $50,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income |
|---|---|---|---|---|---|---|---|
| 2022 | — | $50,949 | $5,197,018 | $5,187,867 | 12 | $5,195,612 | $50,574 |
| 2021 | $4,924,380 | $115,885 | $331,935 | $300,000 | 7 | — | $115,085 |
| 2020 | $4,411,890 | $76,543 | $480,143 | $425,000 | 4 | — | $159,551 |
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The 2021 filing identifies continued research activities relating to TSC and related conditions as the foundation’s direct charitable activity. Among its listed 2022 grants, a $50,000 grant to Choate Rosemary Hall was designated “to further the awareness of and research for tuberous sclerosis.” The other listed 2022 grants were to the Rothberg Family Charitable Foundation, with purposes described as transferring assets following that foundation’s dissolution.
Grantmaking
In filing year 2022, the foundation reported 12 grants totaling $5,187,867. Grant amounts ranged from $9,268 to $1,801,439, with a median of $276,050. Most of the reported dollars went to the Rothberg Family Charitable Foundation: the largest listed grant was $1,801,439, and the purposes of those transfers were described as transferring assets to a related party after dissolution. Choate Rosemary Hall received $50,000 for awareness and research related to tuberous sclerosis.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2022 filing lists Jonathan M. Rothberg as president.
Rothberg Institute Inc is led by Jonathan M. Rothberg, President on every filing since 2020 — the only officer listed, and uncompensated.
Officers on the 2022 filing
Jonathan M. Rothberg
President
On filings since 2020
15 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2020–2022. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Rothberg Institute Inc
How much does Rothberg Institute Inc give each year?
Rothberg Institute Inc gave $5.2M across 12 grants in 2022, according to its 2022 IRS Form 990-PF. In 2021 it gave $300K across 7 grants.
What is Rothberg Institute Inc's typical grant size?
Rothberg Institute Inc's median grant in 2022 was $276,050, and its average grant was $432,322, across 12 grants on its 2022 IRS Form 990-PF.
Where does Rothberg Institute Inc give grants?
Rothberg Institute Inc gives mostly in Florida: 99% of the grant dollars itemized on its 2022 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Highland Beach, FL (11 grants).
Does Rothberg Institute Inc give general operating support?
Not in 2022: none of the 12 grants with a stated purpose on Rothberg Institute Inc's 2022 IRS Form 990-PF were described as general or operating support.
What does Rothberg Institute Inc fund?
The 2021 filing identifies continued research activities relating to TSC and related conditions as the foundation’s direct charitable activity. Among its listed 2022 grants, a $50,000 grant to Choate Rosemary Hall was designated “to further the awareness of and research for tuberous sclerosis.” See mission & focus areas ↑
How do I apply for a grant from Rothberg Institute Inc?
The foundation stated in its 2021 filing that it does not accept unsolicited requests and makes contributions only to preselected charitable organizations. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Rothberg Institute Inc's EIN?
Rothberg Institute Inc's EIN (Employer Identification Number) is 06-1634985. IRS Form 990 filing data is available on this page for 2020–2022.
Does Rothberg Institute Inc accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2022
Live grants for the work Rothberg Institute Inc funds
Medical Research Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in Rothberg Institute Inc's focus areas in our free grants database
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Rothberg Institute Inc down — hundreds of funders to go?