The Planetary Society EIN 95-3423566 Form 990 (PDF) Claim this org

The Planetary Society

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Empowers citizens to advance space science and exploration globally. For fiscal year 2024 it reported $7.5M in revenue, $7.6M in expenses, and $6.1M in net assets.Pt I

Founded
1979
Type
Public charity (501(c)(3)) · Arts & Culture
Location
Pasadena, CA
Website
planetary.org
Filings
5 on file (2020–2024)
Revenue
$7.5MFY2024
Expenses
$7.6M
Net assets
$6.1M
People
20
Filings
5
Updates
0
More identity details & actions ⌄
EIN  95-3423566 Public charity (501(c)(3)) Pasadena, CA Founded 1979
Form 990 (PDF)
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Figures match the IRS filing checked 8/23/26 · see original: IRS
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Size
$1–10M
What they do
Empowers citizens to advance space science and exploration globally.
Leadership
William Nye · Director and CEO · $234K
Money in and out
$7.5M revenue, $7.6M expenses
Bottom line
66% program efficiency
Where the money goes · FY2024
Total revenue
$7.5M
Pt VIII · Ln 12
Total expenses
$7.6M
Pt IX · Ln 25
Net assets
$6.1M
Pt X · Ln 32
Revenue less expenses (Pt I · Ln 19): −$97K
Where spending went · Part IX cols B–D
Program services $0.66 Management & general $0.13 Fundraising $0.21
Program efficiency
66%
of spending reaches programs▼ -7% vs prior filing year
Operating runway
8.1mo
months of highly liquid reserves at operating expense rate0% vs prior filing year
Surplus margin
-1%
revenue over expenses, this year▲ +97% vs prior filing year

Summary of the Filing

Part I · fiscal year 2024 · Form 990
Revenue
$7.5M
FY2024▲ +45%
Expenses
$7.6M
FY2024▲ +5%
Total assets
$7.8M
FY2024▼ -3%
Total liabilities
$1.7M
FY2024▼ -13%
Total revenue
$7.5M
Pt VIII · Ln 12
Total expenses
$7.6M
Pt IX · Ln 25
Net assets
$6.1M
Pt X · Ln 32
Revenue less expensesPt I · Ln 19−$97K
Total assetsPt X · Ln 16$7.8M
Program-expense ratioPt IX · col B66%
Voting members of governing bodyPt I · Ln 314
Independent voting membersPt I · Ln 413

Identity & Classification

Form 990 Header · IRS Business Master File
Legal nameHdr · item CThe Planetary Society
EINHdr · item D95-3423566
Principal addressHdr · item CPasadena, CA
WebsiteHdr · item Jplanetary.org
Year of formationHdr · item L1979
State of legal domicileHdr · item MCA
Exempt statusHdr · item I501(c)(3) · active
NTEE classificationIRS BMFArts & Culture (A33)
Ruling yearIRS BMFMar 1980

Governance & Policies

Part VI
Voting members of the governing bodyPt VI · Ln 1a14
Independent voting membersPt VI · Ln 1b13
Conflict-of-interest policyPt VI · Ln 12aYes
Whistleblower policyPt VI · Ln 13Yes
Document retention policyPt VI · Ln 14Yes
CEO/top-official compensation independently reviewedPt VI · Ln 15aYes
Family or business relationships among officers/directorsPt VI · Ln 2No

Officers, Directors & Key Employees

Part VII, Section A · reportable compensation
Director and CEO
$233,565Pt VII · Sec A
$212,834Pt VII · Sec A
Chief Financial Officer
$180,080Pt VII · Sec A
Chief Development Officer
$173,765Pt VII · Sec A
Chief Communications Officer
$157,800Pt VII · Sec A
Chief of Space Policy
$157,721Pt VII · Sec A
Chief Scientist
$155,679Pt VII · Sec A
$0Pt VII · Sec A

William Nye’s $234K as Director and CEO is at the 91st percentile of top reported officer pay among 3925 $1–10M arts & culture nonprofits. Peer set: organizations in the same NTEE major field of work and revenue-size band, compared on each org’s own highest-paid officer/key-employee, from Form 990 Part VII / 990-PF Part VIII. Descriptive placement, not a verdict on whether the pay is appropriate.

Compensation history total reportable pay by year · 8 named individuals · Part VII

NameFY2024FY2024FY2023FY2022FY2021FY2020
William Nye$233,565$234,360$225,360$182,216$156,907$161,521
Jennifer Vaughn$212,834$213,560$205,360$174,973$173,972$157,590
Jim Suh$180,080$180,696
Richard Chute$173,765$174,862$166,221$154,609$146,322$154,730
Casey Dreier$157,721$164,784$156,910$147,860$126,215
Bruce Betts$155,679$158,444$145,000$133,742$133,950$136,980
Danielle Gunn$157,800$152,135$140,112$122,633
Benjamin Bank$113,543$146,900$141,754

Total reportable compensation (Form 990 Part VII column D / Schedule J column E) by filing year, matched by name within this organization. The Schedule J base / bonus / deferred breakdown is not parsed into this dataset.

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Mission & Programs · Part III

Where the work happens

3 program services account for $4.5M of program spending, described in the organization's own filed words · FY2024.
01

Communication and Education

Through education and communications, the planetary society expands the horizons of public knowledge about space exploration and helps citizens educate others about space. Our public information projects include the planetary report, our quarterly magazine for our members and supporters; planetary radio, our weekly radio show; our…

$3.1Mprogram expense
02

Membership

Our membership program connects space-interested citizens worldwide and provides opportunities for them to participate in space activities. Our membership activities include maintaining detailed records to support our members and non-members who have chosen to participate in our programs.

$1.2Mprogram expense
03

Science & Technology

The planetary society invests in science and technology projects to advance innovative space exploration solutions and research. We provide seed funding to science and technology projects that advance planetary exploration, the search for life, and planetary defense.

$289Kprogram expense

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Statement of Revenue

Part VIII
Contributions & grants$7.5M · 100%
Investment income$118K · 2%
Contributions & grants100%$7.5M
Investment income2%$118K
Total revenueLn 12$7.5M

Statement of Functional Expenses

Part IX · allocated across program, management, and fundraising
Allocation · columns B–D
Program services $0.66 Management & general $0.13 Fundraising $0.21
Program services66%$5.1M
Management & general13%$974K
Fundraising21%$1.6M
Total functional expensesLn 25$7.6M

Balance Sheet

Part X · end of year
CashLn 1$3.8M
Total assetsLn 16$7.8M
Total liabilitiesLn 26$1.7M
Total net assetsLn 32$6.1M
Months of cash on handcomputed5.9

Financial Metrics

Form 990 · FY2024 · each ratio shown with the dollars behind it
Liquidity & Payout
Operating runway
Highly liquid reserves $5.0M · Operating expenses (Pt IX) $7.6M · Less non-cash grants $108K · Cash operating expenses/yr $7.5M
8.1 months
Where the money goes
Program services
Program services $5.1M · Total expenses $7.6M
66%
Management & General
Management & general $974K · Total expenses $7.6M
13%
Fundraising
Fundraising $1.6M · Total expenses $7.6M
21%
Cost to raise $1
Fundraising expense (3-yr avg) $1.3M · Solicited contributions (3-yr avg) $6.3M
$0.21 to raise $1 (3-yr avg)
Where the money comes from
Contribution dependence
Contributions & grants $7.5M · Total revenue $7.5M
100%
Government reliance
Government grants — · Total revenue $7.5M
Earned-income share
Program service revenue $0 · Total revenue $7.5M
0%
Investment reliance
Investment income $118K · Total revenue $7.5M
+2%
Program self-sufficiency
Program service revenue $0 · Total expenses $7.6M
0%
Growth & trend
Revenue growth (YoY)
This year $7.5M · Prior year $5.2M
+45%
Revenue CAGR
FY2019 $4.3M · FY2024 $7.5M
+12%
Net-asset trend (YoY)
End of year $6.1M · Beginning of year —
Beginning net assets not meaningfully positive — showing dollar change
Balance sheet
Surplus Margin
Revenue $7.5M · Expenses $7.6M
-1%
Liabilities-to-Assets
Total liabilities — · Total assets $7.8M
Net-asset ratio
Net assets $6.1M · Total assets $7.8M
78%
Marketable Investment Share
Publicly traded securities (Pt X, ln 11) $1.3M · Other securities (Pt X, ln 12) — · Total assets (Pt X, ln 16) $7.8M
17%
People & payroll
Highest Reported Total Compensation
Individual William Nye · Reported title DIRECTOR AND CEO · Highest reported compensation $234K · Total expenses $7.6M
3%
Personnel share
Salaries, benefits & payroll (Pt IX 5-10) $4.2M · Total expenses $7.6M
55%
Peer comparison

Same NTEE category, revenue band, and state where available. Descriptive — not a grade.

MetricThis orgPeer medianPercentile
Program ratio 66%
Overhead ratio 13%
Fundraising cost ratio 21%
Revenue growth 45%

Straight from the Form 990 — descriptive, not an evaluation. A ratio is hidden when its base is zero or too small to be meaningful; the dollars are always shown.

Grants

Schedule I · received and paid
Grants received · FY2024
See all 15 funders →
Grants paid · 10 grants · $284K · 2019–2024
University of ColoradoFY2024$25,000
Unitemized GrantFY2024$21,000
University of ColoradoFY2023$25,000
Regents University of Ca Los AngelesFY2021$49,980
Ne Kansas Amateur Astronomers League INCFY2021$11,591
Woodland Hills Camera and TelescopesFY2021$7,998
Lowell ObservatoryAZ · FY2019$25,000
Unitemized GrantFY2019$18,938

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Filings & Schedule Manifest

Part IV
III · Programs I · Grants R · Related orgs G · Fundraising L · Interested persons A · Public support F · Foreign M · Noncash
FY2024$5.2M revenue · ⤓ 990 PDF
FY2023$6.3M revenue · ⤓ 990 PDF
FY2022$4.9M revenue · ⤓ 990 PDF
FY2021$6.1M revenue · ⤓ 990 PDF
FY2020$4.3M revenue · ⤓ 990 PDF

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Sources

Every figure above is drawn from these filings
Form 990 e-file (XML) · FY2024IRS
Classification, formation year, addressIRS Business Master File
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