Also known as: C/O TWINFOCUS CAPITAL PARTNERS LLC
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Key Lime Foundation is a private trust based in BOSTON, MA. The foundation received its IRS ruling in 2017. The principal officer is Twinfocus Capital Partners L. It holds total assets of $7.3M. Annual income is reported at $322K. Total assets have grown from $2.1M in 2019 to $7.3M in 2024. The foundation is governed by 1 officer or trustee. Tax records are available from 2017 to 2024. Funding is distributed across 4 states, including California, Arizona, Massachusetts. According to available records, Key Lime Foundation has made 29 grants totaling $926K, with a median grant of $20K. Annual giving has decreased from $401K in 2021 to $65K in 2023. Grantmaking activity was highest in 2022 with $460K distributed across 18 grants. Individual grants have ranged from $1K to $200K, with an average award of $32K. The foundation has supported 13 unique organizations. The foundation primarily supports organizations in Massachusetts, Arizona, District of Columbia, which account for 55% of all grants. Grantmaking reaches organizations across 6 states. Contributions to this foundation are tax-deductible.
Key Lime Foundation is a small, closed, single-trustee family foundation — not a program-staffed grantmaker seeking applicants. It is administered out of TwinFocus Capital Partners, a Boston wealth-management firm, at 75 Park Plaza, with trustee Marcus Wedner (unpaid) as the sole listed officer and no employees. Its own Form 990-PF explicitly identifies it as a preselected-grantee funder that does not solicit or accept unsolicited requests for funds, and there is no application form, LOI process, or grants portal anywhere in the public record. Any organization treating this like an open RFP funder will waste its time.
That said, the 29 recorded grants ($926,000 total since 2017, averaging $31,931) reveal a clear giving personality: general-support checks to progressive movement infrastructure and direct-service organizations, concentrated in criminal-justice reform (Massachusetts Bail Fund, Envision Freedom Fund), civil and human rights (Robert F. Kennedy Human Rights, Alliance for Global Justice), climate and youth organizing (Sunrise Movement Education Fund), health access (Boston Health Care for the Homeless, Doctors Without Borders), and pooled/intermediary progressive funds (Tides Foundation, Movement Voter Fund, The Hopewell Fund, Thousand Currents). Nearly every grant is unrestricted "general support" rather than project-restricted, and multi-year repeat funding (3-4 grants to the same grantee) is the norm rather than one-off gifts — this looks like a donor who picks a small set of trusted organizations and stays with them.
For first-time contacts, the realistic strategy is relationship-based, not proposal-based: build visibility with the intermediary funds this foundation already routes money through (Tides, Movement Voter Fund, Hopewell Fund), pursue personal introductions to TwinFocus or the trustee's network, and demonstrate multi-year programmatic alignment with movement-building/social-justice causes rather than a single project ask. Given the tiny disbursement volume (under $70,000 in the most recent full fiscal year), this is a relationship to cultivate patiently over years, not a grant to chase for an immediate funding gap.
Total recorded giving across all available 990 years is $926,000 over 29 grants (average $31,931 per grant), but annual disbursement has been volatile and is now small: $60,000 (2019), $100,000 (2020), $401,000 (2021), $230,000 (2022), and $65,773 (2023) — a roughly 84% drop from the 2021 peak. The FY2024 filing reports $242,535 in revenue but no grants-paid figure was disclosed at time of research. The foundation's own stated typical grant size (most recent complete cycle) is a $5,000–$35,000 range, median and average both $20,000, across 5 grants — consistent with a foundation now operating at a much smaller scale than its 2021-2022 high-water mark.
Looking at the full historical grantee list, the two largest checks were outliers: Social Finance Inc received $200,000 in a single grant (pay-for-success/impact-finance intermediary, not a recurring relationship), and Alliance for Global Justice received $190,000 across 4 grants (its largest sustained relationship). Below that, funding clusters in the $40,000-$75,000 band for repeat grantees (Sunrise Movement Education Fund $135,000/3 grants, Boston Health Care for the Homeless $75,000/3 grants, Massachusetts Bail Fund $60,000/3 grants, Envision Freedom Fund $60,000/3 grants, Thousand Currents $60,000/2 grants), and smaller amounts for single-instance or lower-priority grantees (Wikimedia Foundation $11,000/3 grants, Robert F. Kennedy Human Rights $20,000/2 grants).
Geographically, recipient organizations cluster in Massachusetts (8 of 29 grants — home-state bias despite the foundation's stated CA/AZ/MA/DC geographic focus), California (7), with Arizona, DC, and New York tied at 4 each, and Washington State at 2. There is no dedicated program-area breakdown available (no percentage-of-giving-by-cause data was disclosed), but general-support, unrestricted grants to progressive-movement and social-justice organizations dominate the purpose field almost universally — very little project-restricted or capital funding appears anywhere in the record.
Key Lime Foundation sits in a cohort of similarly sized, similarly opaque single-family trusts, all classified under the same Philanthropy & Grantmaking NTEE category and all clustered near $7.3 million in assets — likely a coincidence of filing-year asset appreciation rather than a meaningful peer set with shared strategy. None of the five peers have a public website on file, and none show evidence of an open-application process.
| Foundation | Assets | Annual Giving | Primary Focus | Application |
|---|---|---|---|---|
| Key Lime Foundation | $7.31M | ~$66K-$401K (highly variable; ~$66K most recent year) | Progressive movement/social-justice general support | Invitation-only, no unsolicited applications |
| Graber Family Foundation (DE) | $7.32M | Not disclosed | Philanthropy & Grantmaking (unspecified) | Likely invitation-only |
| Fig Tree Fund Dated Nov 30 2015 (FL) | $7.32M | Not disclosed | Philanthropy & Grantmaking (unspecified) | Likely invitation-only |
| Gilbane Family Foundation Inc. (RI) | $7.31M | Not disclosed | Philanthropy & Grantmaking (unspecified) | Likely invitation-only |
| Sidgmore Family Foundation (MD) | $7.32M | Not disclosed | Philanthropy & Grantmaking (unspecified) | Likely invitation-only |
| Gaska Alliance Foundation (CA) | $7.32M | Not disclosed | Philanthropy & Grantmaking (unspecified) | Likely invitation-only |
Unlike its peers, Key Lime is the only foundation in this set with a discoverable, substantive grantee history — its 29 disclosed grants give applicants far more to work with than the peer foundations, none of which publish grantee lists, mission statements, or websites at all. This makes Key Lime, despite being closed to applications, comparatively more "legible" than typical peers at this asset tier: an applicant can at least reverse-engineer its values from past giving, which is not possible with the other five.
No independent news coverage, press releases, leadership announcements, or program updates were found for Key Lime Foundation in 2025 or 2026 — this is consistent with its structure as an unstaffed family trust with no communications function. The only confirmed recent activity is administrative: a Form 990-PF filing dated October 3, 2025, covering fiscal year 2024, reporting $242,535 in total revenue (mostly investment income — dividends, asset sales, and interest) against $42,975 in total expenses, and net assets of $7,314,620.
The foundation's giving trajectory tells the real story of recent activity even without press coverage. Contributions received (the money the trustee adds to the trust) peaked at $2,532,397 in 2021 and $1,080,403 in 2022, then dropped to zero in both 2023 and 2024 — meaning the trust is now operating purely on investment returns rather than fresh donor contributions. Grants paid followed the same arc with a lag: $401,000 in 2021, $230,000 in 2022, then a sharp contraction to $65,000 in 2023. No grants-paid figure was available for 2024 at time of research.
Leadership has been stable since inception: Marcus Wedner has served as sole trustee since May 2017 (succeeding original trustee Paul Karger, who resigned that same month and for whom the trust's "also known as" designation, Paul Karger Ttee, still references). No trustee changes, program launches, or strategic pivots have been publicly reported since. Prospective grantees should treat the 2023 contraction as the more relevant baseline for planning than the larger 2021-2022 figures.
The single most important fact for any prospective grantee: Key Lime Foundation's own tax filings state it accepts contributions only to preselected organizations and does not solicit or accept unsolicited requests for funds. There is no grants portal, no LOI template, no published deadline, and no staff to receive a cold pitch — the domain associated with the foundation in public records (keylime.org) turns out to belong to an unrelated Florida citrus-restoration project, confirming the foundation has no functioning public-facing communications channel at all.
Given that, the only realistic approaches are indirect. First, target the intermediary funds this foundation already trusts and routes money through — Tides Foundation, Movement Voter Fund, and The Hopewell Fund are all pooled/regranting vehicles serving progressive causes; securing a relationship or fiscal-sponsorship arrangement with one of these may put an organization in the flow of Key Lime's money without ever contacting the trust directly. Second, since the foundation is administered by TwinFocus Capital Partners, a Boston family-office firm, any warm introduction through that firm's network (other clients, Boston-area philanthropic circles, or professional advisors) is far more likely to succeed than a written proposal. Third, alignment language should mirror the actual grantee pattern: this is not a funder to approach with narrow project budgets or capital asks — every grant on record is unrestricted general support, and the strongest matches are organizations doing criminal-justice reform, civil/human rights advocacy, climate/youth organizing, or direct health/homelessness services with a national or Massachusetts/California footprint.
Common mistakes to avoid: treating this like a typical family foundation with a discoverable mission statement (none exists in any filing); submitting a cold LOI (there is no process to receive it); or assuming asset size ($7.3M) implies capacity for a large ask — actual recent-year disbursement has been as low as $65,000-$66,000 across the whole grant year, split among multiple grantees. Because the trustee appears to fund the same 8-10 organizations repeatedly year over year, an organization not already in that circle should expect a multi-year relationship-building runway before any grant materializes, if one ever does.
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Smallest Grant
$5K
Median Grant
$20K
Average Grant
$20K
Largest Grant
$35K
Based on 5 grants from the most recent 990-PF filing.
No program descriptions are available for this foundation. Many private foundations report program activities in their annual 990-PF filings — check the Tax Filings section below for the most recent filing.
Total recorded giving across all available 990 years is $926,000 over 29 grants (average $31,931 per grant), but annual disbursement has been volatile and is now small: $60,000 (2019), $100,000 (2020), $401,000 (2021), $230,000 (2022), and $65,773 (2023) — a roughly 84% drop from the 2021 peak. The FY2024 filing reports $242,535 in revenue but no grants-paid figure was disclosed at time of research. The foundation's own stated typical grant size (most recent complete cycle) is a $5,000–$35,000 r.
Key Lime Foundation has distributed a total of $926K across 29 grants. The median grant size is $20K, with an average of $32K. Individual grants have ranged from $1K to $200K.
Key Lime Foundation is a small, closed, single-trustee family foundation — not a program-staffed grantmaker seeking applicants. It is administered out of TwinFocus Capital Partners, a Boston wealth-management firm, at 75 Park Plaza, with trustee Marcus Wedner (unpaid) as the sole listed officer and no employees. Its own Form 990-PF explicitly identifies it as a preselected-grantee funder that does not solicit or accept unsolicited requests for funds, and there is no application form, LOI process.
Key Lime Foundation is headquartered in BOSTON, MA. While based in MA, the foundation distributes grants to organizations across 6 states.
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| Name | Title | Compensation | Benefits | Total |
|---|---|---|---|---|
| Marcus Wedner | TRUSTEE | $0 | $0 | N/A |
Total Giving
N/A
Total Assets
$7.3M
Fair Market Value
N/A
Net Worth
$7.3M
Grants Paid
N/A
Contributions
N/A
Net Investment Income
N/A
Distribution Amount
N/A
Total Grants
29
Total Giving
$926K
Average Grant
$32K
Median Grant
$20K
Unique Recipients
13
Most Common Grant
$20K
of 2023 grantees were first-time recipients
| Recipient | Location | Amount | Year |
|---|---|---|---|
| Doctors Without BordersGENERAL SUPPORT | New York, NY | $35K | 2023 |
| Alliance For Global JusticeGENERAL SUPPORT | Tucson, AZ | $30K | 2023 |
| Sunrise Movement Education FundGeneral Support | Washington, DC | $45K | 2022 |
| Thousand CurrentsGENERAL SUPPORT | San Francisco, CA | $30K | 2022 |
| Boston Health Care For The HomelessGeneral Support | Boston, MA | $25K | 2022 |
| Envision Freedom FundGeneral Support | Brooklyn, NY | $20K | 2022 |
| Massachusetts Bail FundGeneral Support | Boston, MA | $20K | 2022 |
| Tides FoundationGENERAL SUPPORT | San Francisco, CA | $20K | 2022 |
| Robert F Kennedy Human RightsGENERAL SUPPORT | Washington Dc, WA | $10K | 2022 |
| Wikimedia FoundationGeneral Support | San Francisco, CA | $5K | 2022 |
| Social Finance IncGENERAL SUPPORT | Boston, MA | $200K | 2021 |
| The Hopewell FundGeneral Support | Washington, DC | $20K | 2021 |
| Movement Voter FundGeneral Support | Northampton, MA | $20K | 2021 |