The Andrew R and Janet F Miller Foundation concentrates overwhelmingly on environmental conservation and public garden support, funding a small set of organizations with large, repeat grants. Their giving targets land preservation in the Leelanau Peninsula, marine and coral-reef protection, and botanical/educational garden work in Naples, indicating both place-based and ecosystem-focused priorities. Grants are predominantly general purpose, suggesting trust-based support for grantee operations and long-term projects.
Highly concentrated and strategic: few, large grants (several six-figure to multi-million dollar awards), multiple repeat grants to the same organizations, focused exclusively on conservation/environmental causes.
A defining feature of Andrew R and Janet F Miller Foundation C/o Robert T Napier Harrison LLP is its repeated, large general-purpose support for land conservation in the Leelanau Peninsula. Leelanau Conservancy received $1,025,000 in both 2024 and 2025, after a $400,000 grant in 2023, showing a sustained relationship rather than a one-time award. That same pattern appears elsewhere in the portfolio: Coral Reef Alliance received $300,000 in 2023, 2024, and 2025, and Naples Botanical Garden has also been a recurring recipient. The foundation’s giving is centered on environmental conservation, public garden support, and related education work, with grants directed to organizations that protect land, marine habitat, and horticultural assets. Recent recipients also include Friends of Sleeping Bear Dunes, Grand Traverse Regional Land Conservancy, National Park Trust, and the Everglades Foundation’s Everglades Literacy Program, all on a general-purpose basis. The recurring structure of the grants suggests support for core operations and long-term stewardship efforts tied to specific places and ecosystems.
Land conservation is the clearest theme in the foundation’s recent grants. Leelanau Conservancy received $1,025,000 in 2025 for general purposes, while Grand Traverse Regional Land Conservancy received $75,000 in 2025 and $25,000 in 2023, and Friends of Sleeping Bear Dunes received $36,500 in 2024 and $35,000 in 2025. Marine protection is another visible area: Coral Reef Alliance received $300,000 in 2025 for general purposes, and Coral Restoration Foundation received $25,000 in 2025. The foundation also supports botanical and education work in Florida, including $280,000 to Naples Botanical Garden in 2024 and $50,000 in 2025 to Florida Gulf Coast University Foundation (fgcu) - the Water School. Environmental learning appears in grants such as $50,000 in 2025 and $40,000 in 2023 to Everglades Foundation - Everglades Literacy Program.
Typical grant size sits at $25,000 at the 25th percentile, $30,000 at the median, and $50,000 at the 75th percentile, even though a handful of larger general-purpose awards lift annual totals substantially. The record shows recurring support across multiple years for several organizations, including Leelanau Conservancy, Coral Reef Alliance, Chicago Botanic Garden, Naples Botanical Garden, and Florida Gulf Coast University Foundation (fgcu) - the Water School. Grants are made by a regular funder classification, not through program-related investments or individual giving. The awards shown are overwhelmingly general purpose, which points to flexible operating support rather than project-only funding.
$2.9M
$22.4M
$2.3M
$3.1M
Most grants fall between $25K and $50K, with a median of $30K.
25th Percentile
$25K
Median
$30K
75th Percentile
$50K
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Notable grantees: Leelanau Conservancy, Coral Reef Alliance, Naples Botanical Garden
Although the foundation gives nationally, Florida is the top state by grant count, and 39% of grants go to recipients in the HQ state. Recent Florida recipients include Naples, Palmetto Bay, Fort Myers, Key Largo, and Naples again through several repeat awards. Michigan is also prominent through Leeland, Empire, Glen Arbor, Traverse City, and the Leelanau Peninsula conservation network. Other recipient cities include Oakland, Glencoe, Chicago, and Rockville. All grants in the dataset are to US organizations.
The recent record is concentrated in environmental conservation, public garden support, marine protection, and environmental education. Examples include Leelanau Conservancy, Coral Reef Alliance, Naples Botanical Garden, Everglades Foundation - Everglades Literacy Program, and Florida Gulf Coast University Foundation (fgcu) - the Water School.
Recurring. Several recipients appear in multiple years, including Leelanau Conservancy in 2023, 2024, and 2025; Coral Reef Alliance in 2023, 2024, and 2025; and Naples Botanical Garden, Chicago Botanic Garden, and Florida Gulf Coast University Foundation (fgcu) - the Water School across more than one year.
The grant-size profile is centered on modest-to-midrange awards: p25 is $25,000, the median is $30,000, and p75 is $50,000. Larger awards do occur, including seven-figure support to Leelanau Conservancy.
Florida is the top state by grant count, and 39% of grants go to recipients in the HQ state. The foundation also gives heavily to Michigan organizations, especially in the Leelanau and Sleeping Bear Dunes area, while maintaining a national footprint.
2026
Source: IRS Form 990-PF, fiscal year 2026.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| LEELANAU CONSERVANCY | LELAND, MI | $2,025,000 | 2026 | GENERAL PURPOSES |
| CORAL REEF ALLIANCE | OAKLAND, CA | $250,000 | 2026 | GENERAL PURPOSES |
| FLORIDA GULF COAST UNIVERSITY FOUNDATION (FGCU) - THE WATER SCHOOL | FORT MYERS, FL | $100,000 | 2026 | GENERAL PURPOSES |
| NAPLES BOTANICAL GARDEN | NAPLES, FL | $50,000 | 2026 | GENERAL PURPOSES |
| GRAND TRAVERSE REGIONAL LAND CONSERVANCY | TRAVERSE CITY, MI | $50,000 | 2026 | GENERAL PURPOSES |
| FRIENDS OF SLEEPING BEAR DUNES | EMPIRE, MI | $50,000 | 2026 | GENERAL PURPOSES |
| EVERGLADES FOUNDATION - EVERGLADES LITERACY PROGRAM | PALMETTO BAY, FL | $50,000 | 2026 | GENERAL PURPOSES |
| CHICAGO BOTANIC GARDEN | GLENCOE, IL | $50,000 | 2026 | GENERAL PURPOSES |
| FLORIDA WILDLIFE FEDERATION | TALLAHASSEE, FL | $30,000 | 2026 | GENERAL PURPOSES |
| FLOW FOR THE LOVE OF WATER (GROUNDWATER EXPANSION PROGRAM) | TRAVERSE CITY, MI | $30,000 | 2026 | GENERAL PURPOSES |
| ALLIANCE FOR THE GREAT LAKES | CHICAGO, IL | $30,000 | 2026 | GENERAL PURPOSES |
| GLEN LAKE ASSOCIATION | GLEN ARBOR, MI | $25,000 | 2026 | GENERAL PURPOSES |
| CONSERVATION RESOURCE ALLIANCE | TRAVERSE CITY, MI | $25,000 | 2026 | GENERAL PURPOSES |
| NATIONAL PARK TRUST | ROCKVILLE, MD | $25,000 | 2026 | GENERAL PURPOSES |
| LINCOLN PARK CONSERVATORY | CHICAGO, IL | $25,000 | 2026 | GENERAL PURPOSES |
| CORAL RESTORATION FOUNDATION | KEY LARGO, FL | $25,000 | 2026 | GENERAL PURPOSES |
| CONSERVANCY OF SOUTHWEST FLORIDA | NAPLES, FL | $25,000 | 2026 | GENERAL PURPOSES |
| LEELANAU CONSERVANCY | LELAND, MI | $1,025,000 | 2025 | GENERAL PURPOSES |
| CORAL REEF ALLIANCE | OAKLAND, CA | $300,000 | 2025 | GENERAL PURPOSES |
| GRAND TRAVERSE REGIONAL LAND CONSERVANCY | TRAVERSE CITY, MI | $75,000 | 2025 | GENERAL PURPOSES |
| EVERGLADES FOUNDATION - EVERGLADES LITERACY PROGRAM | PALMETTO BAY, FL | $50,000 | 2025 | GENERAL PURPOSES |
| FLORIDA GULF COAST UNIVERSITY FOUNDATION (FGCU) - THE WATER SCHOOL | FORT MYERS, FL | $50,000 | 2025 | GENERAL PURPOSES |
| CHICAGO BOTANIC GARDEN | GLENCOE, IL | $50,000 | 2025 | GENERAL PURPOSES |
| NAPLES BOTANICAL GARDEN | NAPLES, FL | $50,000 | 2025 | GENERAL PURPOSES |
| NATIONAL PARK TRUST | ROCKVILLE, MD | $45,000 | 2025 | GENERAL PURPOSES |
| FRIENDS OF SLEEPING BEAR DUNES | EMPIRE, MI | $35,000 | 2025 | GENERAL PURPOSES |
| ALLIANCE FOR THE GREAT LAKES | CHICAGO, IL | $30,000 | 2025 | GENERAL PURPOSES |
| CORAL RESTORATION FOUNDATION | KEY LARGO, FL | $25,000 | 2025 | GENERAL PURPOSES |
| FLOW FOR THE LOVE OF WATER (GROUNDWATER EXPANSION PROGRAM) | TRAVERSE CITY, MI | $25,000 | 2025 | GENERAL PURPOSES |
| LINCOLN PARK CONSERVATORY | CHICAGO, IL | $25,000 | 2025 | GENERAL PURPOSES |
| GLEN LAKE ASSOCIATION | GLEN ARBOR, MI | $25,000 | 2025 | GENERAL PURPOSES |
| CONSERVATION RESOURCE ALLIANCE | TRAVERSE CITY, MI | $25,000 | 2025 | GENERAL PURPOSES |
| FLORIDA WILDLIFE FEDERATION | TALLAHASSEE, FL | $25,000 | 2025 | GENERAL PURPOSES |
| THE ALLIANCE FOR FLORIDA'S NATIONAL PARKS | CORAL GABLES, FL | $15,000 | 2025 | GENERAL PURPOSES |
| LEELANAU CONSERVANCY | LELAND, MI | $1,025,000 | 2024 | GENERAL PURPOSES |
| CORAL REEF ALLIANCE | OAKLAND, CA | $300,000 | 2024 | GENERAL PURPOSES |
| NAPLES BOTANICAL GARDEN | NAPLES, FL | $280,000 | 2024 | GENERAL PURPOSES |
| EVERGLADES FOUNDATION - EVERGLADES LITERACY PROGRAM | PALMETTO BAY, FL | $50,000 | 2024 | GENERAL PURPOSES |
| CHICAGO BOTANIC GARDEN | GLENCOE, IL | $50,000 | 2024 | GENERAL PURPOSES |
| FLORIDA GULF COAST UNIVERSITY FOUNDATION (FGCU) - THE WATER SCHOOL | FORT MYERS, FL | $50,000 | 2024 | GENERAL PURPOSES |
| FRIENDS OF SLEEPING BEAR DUNES | EMPIRE, MI | $36,500 | 2024 | GENERAL PURPOSES |
| LINCOLN PARK CONSERVATORY | CHICAGO, IL | $35,000 | 2024 | GENERAL PURPOSES |
| NATIONAL PARK TRUST | ROCKVILLE, MD | $25,000 | 2024 | GENERAL PURPOSES |
| FLOW FOR THE LOVE OF WATER (GROUNDWATER EXPANSION PROGRAM) | TRAVERSE CITY, MI | $25,000 | 2024 | GENERAL PURPOSES |
| CORAL RESTORATION FOUNDATION | KEY LARGO, FL | $25,000 | 2024 | GENERAL PURPOSES |
| FLORIDA WILDLIFE FEDERATION | TALLAHASSEE, FL | $25,000 | 2024 | GENERAL PURPOSES |
| CONSERVANCY OF SOUTHWEST FLORIDA | NAPLES, FL | $25,000 | 2024 | GENERAL PURPOSES |
| CONSERVATION RESOURCE ALLIANCE | TRAVERSE CITY, MI | $25,000 | 2024 | GENERAL PURPOSES |
| ALLIANCE FOR THE GREAT LAKES | CHICAGO, IL | $25,000 | 2024 | GENERAL PURPOSES |
| GLEN LAKE ASSOCIATION | GLEN ARBOR, MI | $25,000 | 2024 | GENERAL PURPOSES |
FLORIDA GULF COAST UNIVERSITY FOUNDATION (FGCU) - THE WATER SCHOOL
$100,000GENERAL PURPOSES
FRIENDS OF SLEEPING BEAR DUNES
$50,000GENERAL PURPOSES
CHICAGO BOTANIC GARDEN
$50,000GENERAL PURPOSES
FLOW FOR THE LOVE OF WATER (GROUNDWATER EXPANSION PROGRAM)
$30,000GENERAL PURPOSES
GLEN LAKE ASSOCIATION
$25,000GENERAL PURPOSES
LINCOLN PARK CONSERVATORY
$25,000GENERAL PURPOSES
FLORIDA GULF COAST UNIVERSITY FOUNDATION (FGCU) - THE WATER SCHOOL
$50,000GENERAL PURPOSES
CHICAGO BOTANIC GARDEN
$50,000GENERAL PURPOSES
FRIENDS OF SLEEPING BEAR DUNES
$35,000GENERAL PURPOSES
FLOW FOR THE LOVE OF WATER (GROUNDWATER EXPANSION PROGRAM)
$25,000GENERAL PURPOSES
GLEN LAKE ASSOCIATION
$25,000GENERAL PURPOSES
CHICAGO BOTANIC GARDEN
$50,000GENERAL PURPOSES
FLORIDA GULF COAST UNIVERSITY FOUNDATION (FGCU) - THE WATER SCHOOL
$50,000GENERAL PURPOSES
FRIENDS OF SLEEPING BEAR DUNES
$36,500GENERAL PURPOSES
LINCOLN PARK CONSERVATORY
$35,000GENERAL PURPOSES
FLOW FOR THE LOVE OF WATER (GROUNDWATER EXPANSION PROGRAM)
$25,000GENERAL PURPOSES
CORAL RESTORATION FOUNDATION
$25,000GENERAL PURPOSES
GLEN LAKE ASSOCIATION
$25,000GENERAL PURPOSES